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1
Saraiva, A., F. Silva, and A. Silva-Souza. "Nematode parasites of the characid fish Brycon hilarii from the River Juba, Mato Grosso, Brazil." Helminthologia 43, no. 3 (June 1, 2006): 158–60. http://dx.doi.org/10.2478/s11687-006-0029-6.
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AbstractSpecimens of the characid fish Brycon hilarii collected in dry and wet seasons in the River Juba, Tangará da Serra, State of Mato Grosso, Brazil, were surveyed for nematode parasites. Contracaecum sp. Type 1 and Type 2 larvae of Moravec, Kohn et Fernandes, 1993 were detected in the mesentery and liver, and Neocucullanus neocucullanus and Procamallanus (Spirocamallanus) inopinatus were observed in the intestine and pyloric caeca 75% of the nematodes were detected in the wet season. This is the first report of fish parasites from the River Juba and of the occurrence of Contracaecum larvae in B. hilarii.
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Declich, Francesca. "Groups of Mutual Assistance: Feminine and Masculine Work among Agriculturalists along the Juba River." Northeast African Studies 4, no. 3 (1997): 77–89. http://dx.doi.org/10.1353/nas.1997.0000.
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Thiemig, Vera, Florian Pappenberger, Jutta Thielen, Hussein Gadain, Ad de Roo, Katalin Bodis, Mauro Del Medico, and Flavian Muthusi. "Ensemble flood forecasting in Africa: a feasibility study in the Juba-Shabelle river basin." Atmospheric Science Letters 11, no. 2 (March 24, 2010): 123–31. http://dx.doi.org/10.1002/asl.266.
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Declich, Francesca. "“Gendered Narratives,” History, and Identity: Two Centuries Along the Juba River among the Zigula and Shanbara." History in Africa 22 (January 1995): 93–122. http://dx.doi.org/10.2307/3171910.
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The argument that a process of “making tribes” has invested Africa from early colonial times has been used to explain the emergence of some ethnicities which appear not to have existed before colonialism. This emergence was often accompanied by the creation of written records of male historical discourse, thus not only giving them undue prominence but also suppressing female historical discourses which were not considered pertinent to “history.”Yet whenever history is recounted orally by either men or women, it contains messages directed to a “gendered” audience (i.e., an audience composed of people of both genders) whose participants perceive messages differently and reproduce separate but interacting discourses. Such diverse perceptions result from certain aspects in oral genres as well as small, coded markers which can evoke immensely potent but gender-specific experiences. Such instances may become public symbols and, along with more obviously historical narratives, greatly influence how people relate to their past. Thus men and women in the same audience, hearing the same story, can make connections between elements of a narrative which are obscure to outside researchers.Recently, it has become quite common for historians of Africa to deconstruct written historical sources on the basis of the agendas of both the original writer and his informants. These agendas are rarely explicit and thus hiddenly selective. Such deconstruction is a legitimate scholarly procedure; however, as female voices have rarely been recorded—the resulting analysis reinforces the omission of women's roles in the process of remaking history and creating identity.
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Wieland, Ronald G., and M. J. A. Werger. "Land types and vegetation in the Luuq district of south-western Somalia." Journal of Tropical Ecology 1, no. 1 (February 1985): 65–87. http://dx.doi.org/10.1017/s0266467400000092.
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ABSTRACTA land use survey involving land typing and vegetation classification was conducted within the Luuq District Refugee Area (200,000 ha) in south-western Somalia. Average rainfall and annual temperature of the area are 310 mm and 30.5° C. The area is composed of limestone and basalt uplands, gypsiferous and alluvial interplains, and ancient and recent alluvial terraces of the Juba River.Land types were identified by aerial photo survey and ground observation and mapped on a 1:100,000 scale LandSat Satellite (colour) Image. Soil types were classified according to the method used by the US Department of Agriculture, Soil Conservation Service. Vegetation was sampled according to the Braun-Blanquet approach in 52 releves located within previously mapped land types, and analysed using the traditional phytosociological methods and the DECORANA and TWINSPAN computer programs. The results of these methods are compatible with one another. Most community types identify distinct land types: basalt and limestone uplands, gypsum and alluvial interplains, and depressions and gentle rises of the Juba River terrace.Commiphora and Acacia species dominate the open thorny bushland. They are mostly medium-sized shrubs and trees, 1 to 4 m in height. There is little herbaceous ground cover except in depressions and drainageways. Total shrub and tree cover averages 34%. Due to the large influx of refugees, there has been excessive cutting for fuelwood and construction material and notable bushland converted to cropland. Degradation of the vegetation and soils is prominent and is most evident on the upper and lower terraces of the Juba River.
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Boying, Harrison Henry, and Fang Ping. "Non-point source pollution and its impact on drinking water quality in River Nile- A case study of Juba South Sudan." International Journal of Scientific and Research Publications (IJSRP) 10, no. 9 (September 12, 2020): 483–96. http://dx.doi.org/10.29322/ijsrp.10.09.2020.p10557.
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Declich, Francesca. "Codifying Memories through Film." Journal of Global Slavery 5, no. 1 (February 28, 2020): 62–88. http://dx.doi.org/10.1163/2405836x-00501005.
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Abstract Before the exponential diffusion of modern video broadcasting media, the history of forced migrations within Africa was mainly transmitted through the spread of individual and collective memories. Filming, instead, agglomerates memories and images by producing new overarching and often convincing interpretations of the past. This article describes how and why a documentary video on slavery in the Indian Ocean was produced and the reasons behind its narrative form. Stemming from the urge of people regarded as descendants of slaves to have their ancestral dances documented as proof of their origins, this documentary is the result of a long-range ethnographic encounter spanning time and space from the Juba River in Somalia to Malawi and the Niasa region of Mozambique. It was only audiovisual equipment like video cameras and computers that made such an amazing encounter possible.
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Thiemig, Vera, Rodrigo Rojas, Mauricio Zambrano-Bigiarini, Vincenzo Levizzani, and Ad De Roo. "Validation of Satellite-Based Precipitation Products over Sparsely Gauged African River Basins." Journal of Hydrometeorology 13, no. 6 (December 1, 2012): 1760–83. http://dx.doi.org/10.1175/jhm-d-12-032.1.
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Abstract Six satellite-based rainfall estimates (SRFE)—namely, Climate Prediction Center (CPC) morphing technique (CMORPH), the Rainfall Estimation Algorithm, version 2 (RFE2.0), Tropical Rainfall Measuring Mission (TRMM) 3B42, Goddard profiling algorithm, version 6 (GPROF 6.0), Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks (PERSIANN), Global Satellite Mapping of Precipitation moving vector with Kalman filter (GSMap MVK), and one reanalysis product [the interim ECMWF Re-Analysis (ERA-Interim)]—were validated against 205 rain gauge stations over four African river basins (Zambezi, Volta, Juba–Shabelle, and Baro–Akobo). Validation focused on rainfall characteristics relevant to hydrological applications, such as annual catchment totals, spatial distribution patterns, seasonality, number of rainy days per year, and timing and volume of heavy rainfall events. Validation was done at three spatially aggregated levels: point-to-pixel, subcatchment, and river basin for the period 2003–06. Performance of satellite-based rainfall estimation (SRFE) was assessed using standard statistical methods and visual inspection. SRFE showed 1) accuracy in reproducing precipitation on a monthly basis during the dry season, 2) an ability to replicate bimodal precipitation patterns, 3) superior performance over the tropical wet and dry zone than over semiarid or mountainous regions, 4) increasing uncertainty in the estimation of higher-end percentiles of daily precipitation, 5) low accuracy in detecting heavy rainfall events over semiarid areas, 6) general underestimation of heavy rainfall events, and 7) overestimation of number of rainy days in the tropics. In respect to SRFE performance, GPROF 6.0 and GSMaP-MKV were the least accurate, and RFE 2.0 and TRMM 3B42 were the most accurate. These results allow discrimination between the available products and the reduction of potential errors caused by selecting a product that is not suitable for particular morphoclimatic conditions. For hydrometeorological applications, results support the use of a performance-based merged product that combines the strength of multiple SRFEs.
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Musoke, Robert, Alexander Chimbaru, Amara Jambai, Charles Njuguna, Janet Kayita, James Bunn, Anderson Latt, et al. "A Public Health Response to a Mudslide in Freetown, Sierra Leone, 2017: Lessons Learnt." Disaster Medicine and Public Health Preparedness 14, no. 2 (August 19, 2019): 256–64. http://dx.doi.org/10.1017/dmp.2019.53.
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ABSTRACTOn August 14, 2017, a 6-kilometer mudslide occurred in Regent Area, Western Area District of Sierra Leone following a torrential downpour that lasted 3 days. More than 300 houses along River Juba were submerged; 1141 people were reported dead or missing and 5905 displaced. In response to the mudslide, the World Health Organization (WHO) Country Office in Sierra Leone moved swiftly to verify the emergency and constitute an incident management team to coordinate the response. Early contact was made with the Ministry of Health and Sanitation and health sector partners. A Public Health Emergency Operations Center was set up to coordinate the response. Joint assessments, planning, and response among health sector partners ensured effectiveness and efficiency. Oral cholera vaccination was administered to high-risk populations to prevent a cholera outbreak. Surveillance for 4 waterborne diseases was enhanced through daily reporting from 9 health facilities serving the affected population. Performance standards from the WHO Emergency Response Framework were used to monitor the emergency response. An assessment of the country’s performance showed that the country’s response was well executed. To improve future response, we recommend enhanced district level preparedness, update of disaster response protocols, and pre-disaster mapping of health sector partners.
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Hantke, R., and A. E. Scheidegger. "Klusen und verwandte Formen im Schweizer Jura." Geographica Helvetica 49, no. 4 (December 31, 1994): 157–64. http://dx.doi.org/10.5194/gh-49-157-1994.
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Abstract. Kluses and Related Forms in the Swiss Jura Mountains – It is shown that the usual theory of the genesis of the "kluses" (transverse gorges cutting across ndges) in the Jura mountains of Switzerland by fluvial erosion by antecedent rivers is untenable: 1 st. the erosive power of a river on its bed is by at least a factor 100 too small to abrade solid rock as found in the kluses 2nd. the orientation structure of the segments of the rivers flowing in the kluses is non-random which, by the tenets of the principle of antagonism in landscape development. is indicative of a non-exogenic origin of them. 3rd. the orientation structure of the klus-nvers agrees with that of the joints in the area. 4th, in view of the fact that the joints are known to have been caused by recent plate-tectonic processes, the same must be assumed for the kluses: the latter owe their genesis to complicated geologic lineaments, folds and shear faults. This fact has practical consequences: During the construction of tunnels underneath a klus one has to take into consideration that the disturbance in the landscape represented by a klus my well reach geologically far into the basement. 5th,the erosion of the kluses oecurred in parallel to the direction of the joints. In this instance, the debris produced by the tectonic processes and by frost action was removed by the mechanical and chemical action of the water. During the cold times and cold spells during warm times this water was mainly melt-water. 6th, special studies are necessary for the determination of the quantity of debris that was removed. The time-span available for this removal is much longer than commonly assumed: it begins with the first tectonic foldnig, in the Jura mountains already in mid-Miocene, 15 Ma ago.
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Tian, Shimin, Zhaoyin Wang, and Hongxia Shang. "Study on the Self-purification of Juma River." Procedia Environmental Sciences 11 (2011): 1328–33. http://dx.doi.org/10.1016/j.proenv.2011.12.199.
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Xu, Mengzhen, Na Zhao, Xiongdong Zhou, Baozhu Pan, Wei Liu, Shimin Tian, and Zhaoyin Wang. "Macroinvertebrate Biodiversity Trends and Habitat Relationships within Headwater Rivers of the Qinghai-Tibet Plateau." Water 10, no. 9 (September 7, 2018): 1214. http://dx.doi.org/10.3390/w10091214.
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Highland running-water biodiversity has gained growing interest around the world, because of the more pristine conditions and higher sensitivity to environmental changes of highland rivers compared to the lowland rivers. This study presents the findings of systematic investigations and analyses on running-water biodiversity of macroinvertebrate assemblages in the most important headwater streams in the Yalutsangpo and Sanjiangyuan River basins in the Qinghai-Tibet Plateau and the lowland headwaters of the Songhua River, Juma River, and East River during the non-flood seasons of 2012 to 2016. The results indicated that the headwaters on the plateau had a higher regional biodiversity compared to the lowland rivers with the similar flow and substrate conditions. Even though the local diversity of the highland rivers was not significantly different at each single site, the taxonomic composition was significantly different with several rarely seen species scattering among the different sites, resulting in a high regional biodiversity. The biodiversity and composition of macroinvertebrates were strongly affected by the altitude gradient and the environmental variables associated with altitude. To be specific, for the Yalutsangpo River, canonical correspondence analyses of the macroinvertebrate assemblages and their environmental variables indicated that altitude, stream condition (represented by river pattern, riverbed structures, substrate composition), and water temperature influence macroinvertebrate taxa composition. Because of the restrictive plateau conditions including low water temperature, poor aquatic and riparian vegetation, and low runoff, the macroinvertebrate assemblages showed low biodiversity and were vulnerable to potential human disturbance/climate change. Therefore, it is essential to conserve suitable conditions of the determinative environmental variables to protect the unique and high regional biodiversity of the headwaters on the Qinghai-Tibet Plateau.
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Maunder, Michael. "THE RIVERINE FORESTS OF THE JUBBA RIVER, SOUTHERN SOMALIA." Curtis's Botanical Magazine 5, no. 3 (August 1988): 120–29. http://dx.doi.org/10.1111/j.1467-8748.1988.tb00133.x.
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Douthwaite, Robert J. "Lowland Forest Resources and Their Conservation in Southern Somalia." Environmental Conservation 14, no. 1 (1987): 29–35. http://dx.doi.org/10.1017/s0376892900011073.
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Lowland forest in southern Somalia is restricted to the Holawajir depression and banks of the Jubba and Shabeelle Rivers. Riverine forest probably covers less than 3,000 ha and is undergoing rapid clearance for farming, so that it seems unlikely to survive this century. Further biological survey is required but the flora, and bird and mammal faunas, appear to be impoverished compared with those on the lower Tana River in Kenya.
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Krismono, Krismono, and Endi Setiadi Kartamihardja. "OPTIMASI PEMANFAATAN DAN KONSERVASI STOK IKAN SIDAT (Anguilla spp) DI DAS POSO, SULAWESI TENGAH." Jurnal Kebijakan Perikanan Indonesia 4, no. 1 (May 31, 2012): 9. http://dx.doi.org/10.15578/jkpi.4.1.2012.9-16.
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<p>Daerah Aliran Sungai (DAS) Poso yang terdiri atas sungai Poso dan anak sungainya yang mengalir dari Danau Poso sampai muaranya di Teluk Tomini dan sungai-sungai kecil di sekitar muara Poso merupakan kawasan ruaya ikan sidat. Penangkapan ikan sidat dewasa (induk) di Tentena dengan Wayamassapi (perangkap) dan penangkapan glass eel di muara Poso yang sangat intensif akan berpengaruh terhadap penurunan produksi dan potensi ikan sidat di DAS Poso. Pembangunan PLTA Sulewana yang membendung sungai Poso di Sulewana juga akan berpengaruh terhadap penurunan produksi dan potensi ikan sidat karena pembendungan akan memutus ruaya ikan sidat. Selama periode tahun 2010-2012 anakan ikan sidat (glass eel) yang berruaya ke sungai Poso turun sekitar 10 juta ekor per tahun yaitu dari 36 juta ekor per tahun menjadi 35 juta ekor per tahun. Potensi induk sidat turun sekitar 3.000 ekor per tahun, yaitu dari 9.000 ekor menjadi 6.000 ekor per tahun. Dalam rangka konservasi dan optimasi pemanfaatan sumberdaya ikan sidat, upaya yang perlu dilakukan adalah menetapkan sungai Pandiri dan Rawa Pandiri sebagai kawasan konservasi, melakukan restocking elver yang berukuran panjang lebih besar dari 15 cm di Danau Poso, membangun jalur ruaya sidat (eels ladder) di Sulewana, mengatur penangkapan sidat dewasa di Tentena dan menetapkan kuota penangkapan “glass eels” di Muara Sungai Poso.</p><p>Poso watershed composting of Poso River and its tributaries flowing the waters from Poso Lake to its mouth at Tomini Bay is one of migration habitat of tropical eels (<em>Anguilla</em> spp). Intensive exploitation of adult eels at outlet of the lake Poso at Tentena by using trap and glass eel at mouth of the Poso River has affected on the decreasing of the eels production. Damming of the Poso River at Sulewana has also affected the eels production sustainability due to barrier of the eels migration. During the period 2010-2012, the glass eels migration from the mouth of Poso River to the river decreased about 10 millions, from 36 millions to 35 millions individuals per year. The adult eels also decreased for about 3000 individuals, from 9000 individuals to 6000 individuals per year. In order to conserve and optimize the exploitation of the eels stock, some efforts, i.e., establishment of conservation area at Pandiri river and its swampy area, restocking of the elver with a total length more than 15 cm at Lake Poso, establishment of eels ladder at Sulewana, regulation of fishing for adult eels at Tentena and glass eels at mouth of the Poso River should be implemented.</p>
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Molliex, Stéphane, Olivier Fabbri, Vincent Bichet, and Herfried Madritsch. "Possible Quaternary growth of a hidden anticline at the front of the Jura fold-and-thrust belt: geomorphological constraints from the Forêt de Chaux area, France." Bulletin de la Société Géologique de France 182, no. 4 (July 1, 2011): 337–46. http://dx.doi.org/10.2113/gssgfbull.182.4.337.
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Abstract This study presents new constraints for Plio-Quaternary (post-2.4 Ma to present-day) anticline growth along the frontal zone of the Jura fold-and-thrust belt, in the Forêt de Chaux area, located 30 km SW of Besançon. The Forêt de Chaux area consists of a N080°E-elongated depression bordered by the Doubs and Loue rivers to the north and south respectively, and filled with Sundgau-type Pliocene alluvial deposits. The upper surface of the Pliocene deposits between the Loue and Doubs rivers is marked by a N065°E-trending ridge crossing the depression in a median position. A differential uplift along this ridge, post-dating the deposition of the gravels (2.4 Ma), is suggested by several geomorphological observations such as the opposite river migration on each side of the ridge as well as variations of drainage geometry and incision intensity. Geological and geophysical subsurface data indicate that the ridge roughly coincides with the axis of an anticline hidden beneath the Pliocene deposits. The observed uplift is presumably related to a post-2.4 Ma anticline growth. The fact that the azimuth of the hidden anticline axis is parallel to the strike of deep-seated Late Paleozoic basement faults and not to the local strike of the thin-skinned Jura structures indicates that the inferred post-Pliocene deformation could possibly be an expression of a recent thick-skinned deformation of the basement of the northern Alpine foreland. The focal depth (15 km) of the February 24th, 2004, Besançon earthquake supports the hypothesis of a basement fault reactivation.
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WERTHMANN, KATJA. "GOLD MINING AND JULA INFLUENCE IN PRECOLONIAL SOUTHERN BURKINA FASO." Journal of African History 48, no. 3 (November 2007): 395–414. http://dx.doi.org/10.1017/s002185370700326x.
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ABSTRACTThe ‘Lobi’ region in what is today southern Burkina Faso is frequently mentioned in historical accounts of gold mining in West Africa. However, little is known about the actual location of the gold mines or about the way gold mining and trade were organized in precolonial times. This article points out that some previous hypotheses about precolonial gold mining, trade and the sociopolitical organization of this region are flawed, partly because ‘Lobi’, as the name for both the region and its inhabitants, is misleading. In fact, the references to ‘Lobi’ merge two distinct gold-producing zones along the Mouhoun river, about 200 km from each other. The present-day populations of southern Burkina who have settled there since the eighteenth century do not know who was mining gold prior to their arrival, and many of them have not been involved in gold mining at all due to conceptions of gold as a dangerous substance.
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Rabin, Mickael, Christian Sue, Pierre G. Valla, Jean-Daniel Champagnac, Nicolas Carry, Vincent Bichet, Urs Eichenberger, and Jacques Mudry. "Deciphering neotectonics from river profile analysis in the karst Jura Mountains (northern Alpine foreland)." Swiss Journal of Geosciences 108, no. 2-3 (October 16, 2015): 401–24. http://dx.doi.org/10.1007/s00015-015-0200-5.
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Hakim, Budi Rahmat, Abdul Hafiz Sairazi, and Nasrullah Nasrullah. "PARADIGMA FIKIH SUNGAI: TELAAH KEBIJAKAN PEMERINTAH DAN PEMAHAMAAN MASYARAKAT TERHADAP KONSERVASI SUNGAI DI KOTA BANJARMASIN." Jurnal Hadratul Madaniyah 8, no. 1 (June 29, 2021): 1–12. http://dx.doi.org/10.33084/jhm.v8i1.2220.
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Kota Banjarmasin merupakan kota yang memiliki begitu banyak aliran sungai dan dihuni mayoritas oleh kaum muslim, yang seyogyanya mengerti akan pentingnya manfaat sungai karena Islam mengajarkan hal tersebut. Namun kenyataannya masih banyak masyarakat yang membuang sampah ke aliran sungai bahkan membangun pemukiman di bantaran sungai. Tujuan penelitian ini adalah untuk mengetahui efektivitas implementasi kebijakan pemerintah terhadap konservasi sungai di Kota Banjarmasin dan mengetahui respon masyarakat muslim Banjarmasin terhadap kebijakan pemerintah terkait konservasi sungai di Kota Banjarmasin, serta mengetahui sejauh mana kultur pemahaman keagamaan dan persepsi masyarakat muslim di Kota Banjarmasin yang dapat mendukung terhadap upaya pemanfaatan dan konservasi sungai. Penelitian ini merupakan penelitian lapangan, dengan masyarakat kota Banjarmasin dan dinas-dinas terkait sebagai subyek penelitian. Teknik pengumpulan data yang digunakan adalah wawancara, observasi dan studi dokumentasi. Teknik analisis penelitian secara deskriptif dan menggunakan modal teoritik yang dimiliki oleh peneliti. Berdasarkan hasil penelitian diketahui bawah Kebijakan konservasi sungai telah diatur dalam berbagai regulasi oleh Pemerintah Kota Banjarmasin, bahkan menjadi isu strategis dalam perencanaan tata ruang wilayah Kota Banjarmasin 2013-2032. Kebijakan tersebut mendapat respon positif dari masyarakat Kota Banjarmasin, namun partisipasi dan keterlibatan mereka terhadap konsevasi sungai masih rendah. Selain itu, pemahaman keagamaan masyarakat muslim di Kota Banjarmasin dalam pemanfaatan dan konservasi sungai juga masih rendah karena belum didukung oleh pengetahuan mereka terhadap konsep fikih dan aturan-aturan terkait pemanfaatan air dan pelestarian sumber air dan konservasi lingkungan.
Banjarmasin city is a city that has so many rivers and is inhabited by the majority of Muslims, who should understand about the importance of the rivers’ benefits because Islam teaches it. However, in reality there are still many people who throw garbage into the river, even build settlements along the river. The purpose of this study is to determine the effectiveness of the implementation of government policies on river conservation in Banjarmasin City and to know the response of the Banjarmasin Muslim community to government policies related to river conservation in Banjarmasin City, and to know the extent to which the culture of religious comprehension and perceptions of the Muslim community in Banjarmasin City can support the river utilization and conservation efforts. This research is a field research, with the people of Banjarmasin city and related agencies as research subjects. The techniques of data collection used were interviews, observation and documentation study. The research analysis technique is descriptive and uses theoretical capital owned by the researcher. Based on the research results, it is known that the river conservation policy has been regulated in various regulations by Government of the Banjarmasin City, and has even become a strategic issue in the spatial planning of Banjarmasin City 2013-2032. This policy received a positive response from the people of Banjarmasin City, but their participation and involvement in the river conservation was still low. In addition, the religious understanding of the Muslim community in Banjarmasin City in the use and conservation of rivers is also still low because their knowledge is not supported by their knowledge of the fiqh concept and rules related to water use and preservation of water sources and environmental conservation.
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Pancza, A. "Le Château Cugny, un escarpement particulièrement gélif du Jura." Geographica Helvetica 40, no. 2 (June 30, 1985): 67–73. http://dx.doi.org/10.5194/gh-40-67-1985.
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Abstract. Château Cugny is an exceptional place where the actual cliffs evolution is quite rapid. Because of the frost action, considerable quantities of frost-rived nibble broke off the cliffs each year. The relative frequency of rock falls enables measurements to be made with simple installations. Two examples of the daily freeze-thaw cycle show the variations of the rock falls during the day according to the temperature's changes. Frequent rock falls contribute to Château Cugny's cliffs rapid scarp retreat. These rock falls occur by a 2-stage process: first, the frost susceptible lower portion of the cliff breaks apart resulting in undermining of the overlying non frostsusceptible portion which subsequently breaks off and falls down.
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Bu, Jingyi, Chunxia Lu, Jun Niu, and Yanchun Gao. "Attribution of Runoff Reduction in the Juma River Basin to Climate Variation, Direct Human Intervention, and Land Use Change." Water 10, no. 12 (December 3, 2018): 1775. http://dx.doi.org/10.3390/w10121775.
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Juma River, located in the Midwest of the Haihe River basin, is an important source of water supply to Beijing and Hebei. Over the past decades, the region has been seriously threatened by water shortages owing to complex climate conditions and intensive human activities. This study investigated the runoff characteristics of the Juma River by employing the Soil and Water Assessment Tool (SWAT) and stochastic methods for the period of 1961–2013. Accordingly, the runoff changes attributed to the climate variation and different types of anthropogenic activities (land use change and direct human intervention) were estimated, respectively, in conjunction with the improved quantitative response analysis. The results indicated that the annual runoff of both Zijingguan station and Zhangfang station has decreased significantly at the 0.001 significance level, and reduction rates were −0.054 billion m3 and −0.10 billion m3, respectively. Moreover, the persistency of this trend has been shown for decades (Hurst coefficient > 0.50). The SWAT model was calibrated and validated during the baseline period of 1961–1978. Significant rising temperatures and declining precipitation were the main reasons for runoff reduction, especially during the two periods of 1998–2002 and 2003–2008. Additionally, water withdrawal of Wuyi canal aggravated the runoff reduction and water scarcity conditions in the region. After 2009, the effects of direct human intervention exceeded those of climate change. However, the impact of land use change can be seen as negligible during the study period. Climate change had a greater effect on runoff reduction in winter, while the impact of human activities was more dramatic in summer.
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Putu Paristha, Prakasih, Yudarta I Gede, and Santosa Hendra. "Tirtha Campuhan: Sebuah Karya Komposisi Baru dengan Media Gamelan Smar Pagulingan." Resital: Jurnal Seni Pertunjukan 19, no. 3 (December 5, 2018): 113–21. http://dx.doi.org/10.24821/resital.v19i3.2452.
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Proses penciptaan karya seni, khususnya seni karawitan sudah mulai berkembang mengikuti kemajuan jaman. Perkembangan tersebut terdapat pada proses kreativitas dalam penciptaan karya seni karawitan, hal itu dapat dilihat dari unsur musik dalam seni karawitan. Dalam seni karawitan sangat penting dalam proses penciptaan karya seni yang kuat untuk sebuah pembaharuan terhadap tradisi sehingga bisa dikatakan sebagai musik kreasi. Penata tertarik menganggkat sebuah tempat suci di Pantai Sari Kuta tepatnya di Pura Tirtha Campuhan yang memiliki keunikan. Keunikan tersebut adalah fenomena alam tentang aliran sungai yang di dalamnya terdapat campuran dari dua aliran sungai dengan air laut sehingga terbentuk sungai baru yang bernama sungai campuhan. Sesuai dengan namanya Pura Tirtha Campuhan memiliki campuran aliran sungai dari muara sungai mati (tukad mati, tukad ening) dan sungai yang berada di Badung, sehingga aliran sungai di Pura tersebut membentuk sebuah aliran sungai baru (peteluan tukad, tukad mati, tukad ening). Selain terjadinya campuran dari aliran sungai, masyarakat juga memanfaatkan dan menggunakan air sungai ini sebagai tirtha untuk pengelukatan atau pembersihan dan juga digunakan sebagai obat. Dari cerita tersebut akhirnya penata menemukan ide untuk menjadikan Tirtha Campuhan sebagai sumber inspirasi. Penata merealisasikannya ke dalam bentuk garapan komposisi musik kreasi dengan menggunakan media ungkap Smar Pagulingan. Dalam media ungkap Smar Pagulingan penata mengaplikasikan tirtha dan campuhan atau campuran dalam membuat tirtha tersebut dengan menggabungkan beberapa patet dalam gamelan Smar Pagulingan. Hal tersebut sesuai dengan tujuan penata yang membangun suasana harmonis dalam olahan melodi menggunakan pencampuran patet.Tirtha Campuhan: A New Composition Work by Using Semar Pagulingan Gamelan as Media. In Karawitan, the process of creating works of art is essential to produce a renewal of tradition so that the process of creating these works of art can be said to be musical creation. For creating the musical creation, the author was inspired by the uniqueness of the holy place in Pata Sari Kuta precisely in Tirtha Campuhan Temple, which was used as the idea of creation. The uniqueness in Tirtha Campuhan Temple is a natural phenomenon of river flow in which there is a mixture of two river streams with seawater to form a new river called Campuhan river. As the name implies, Tirtha Campuhan Temple has a mixture of river flow from dead river mouths (tukad mati, tukad ening) and rivers in Badung, so that the river flow in the temple forms a new river flow (tukad pateluan, tukad mati, and tukad ening). The local community often uses the river water in the temple as tirtha for pengelukatan or cleaning and also used as medicine. From this information, the authors found the idea of making Tirtha Campuhan as a source of inspiration. The author realized the idea of creation in the form of the creation of musical compositions using the media revealed Semar Pagulingan. In this media, Semar Pagulingan applied tirtha and campuhan or mixture in making the tirtha by combining several patets in the Semar Pagulingan gamelan. The purpose of creating this creative music is to build a harmonious atmosphere in the preparation of melodies using patet mixing.Keywords: tirtha campuhan; semar pagulingan; creation music
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Surre, C., H. Persat, and J. M. Gaillard. "A biometric study of three populations of the European grayling, Thymallus thymallus (L.), from the French Jura Mountains." Canadian Journal of Zoology 64, no. 11 (November 1, 1986): 2430–38. http://dx.doi.org/10.1139/z86-363.
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Three populations of grayling (Thymallus thymallus L.) from the Jura Mountains (Rhône drainage basin, France) were compared using 8 meristic and 10 morphometric characteristics; discriminant analysis clearly distinguished these populations. This result raises a number of questions about the specificity of fish populations inhabiting any given river and the usefulness of stocking that has been carried out up to now without any controls.
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Dominig, Amryta, Max Rudolf Muskananfola, and Churun A’in. "LAJU SEDIMENTASI PERAIRAN SUNGAI SILANDAK, SEMARANG BARAT Sedimentation Rate of Silandak River, West Semarang." Management of Aquatic Resources Journal (MAQUARES) 8, no. 3 (July 26, 2019): 126–32. http://dx.doi.org/10.14710/marj.v8i3.24246.
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ABSTRAK Sungai Silandak merupakan salah satu sungai yang bermuara di Perairan Teluk Semarang bagian tengah berada di kawasan industri, memiliki fungsi sebagai sistem drainase Kota Semarang. Tujuan dari penelitian ini adalah untuk mengetahui laju sedimentasi, hubungan laju sedimentasi dengan kecepatan arus dan mengetahui komposisi sedimentasi melalui hasil analisis fraksi sedimen di perairan Sungai Banjir Kanal Barat dan Silandak. Penelitian ini dilaksanakan pada tanggal 17 Oktober – 1 November 2018 di Sungai Silandak. Metode yang digunakan dalam penelitian ini menggunakan metode kuantitatif. Pengambilan sampel menggunakan metode purposive sampling, dilakukan 2 (dua) kali pengambilan sampel dengan selang 14 hari. Data yang dianalisis adalah debit sungai, Total Suspended Solid (TSS), laju sedimentasi, dan fraksi sedimen. Laju sedimentasi Sungai Silandak 0,08-55,81 ton/hari dan fraksi sedimen di dominasi pasir dan liat. Hasil Penelitian dari hulu menuju hilir menunjukkan sedimentasi semakin meningkat dan fraksi butir sedimen halus juga semakin meningkat. ABSTRACT Silandak river is one of the rivers in the industrial area that flow into central of Semaran, it has a function as the drainage system of Semarang city. The purpose of the study was to determine the sedimentation rate and composition, relationship between the sedimentation rate and current velocity and sediment composition based on analysis of sediment fraction. The study was conducted from 17 October-1 November 2018 at the Silandak River. The method using quantitative methods. Sampling using a purposive sampling with two replicate and sampling interval of 14 days. The analyzed data were the total river discharge, Total Suspended Solid (TSS), sedimentation rate and fractions. Silandak river sedimentation rate from 0.08-55.81 tons/day and the dominant fraction of the sediment are sand and clay. Results showed that sedimentation rate and clay increased from the upstream to downstream.
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Latifah, Nurul, Saimul Laili, and Hari Santoso. "Diversitas Makrofauna Berdasarkan Kualitas Air di Sungai Alo Kecamatan Jabon Kabupaten Sidoarjo." BIOSAINTROPIS (BIOSCIENCE-TROPIC) 6, no. 1 (August 11, 2020): 61–65. http://dx.doi.org/10.33474/e-jbst.v6i1.316.
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Alo river is one of the rivers in Sidoarjo, the river is a branch of the Porong river, as long as there are residential, agricultural, aquaculture streams, hereas the estuary area is the place for fishing. The Alo River is also used by the surrounding community for daily needs such as washing clothes, bathing, agricultural irrigation and so on. However, the current condition of the waters in the river can no longer be used for daily activities due to waste disposal either from Lapindo or household waste flowed into the river. The waste is in the form of solid and liquid waste, which may consist of organic material, which is either toxic or non-toxic. The purpose of research is to find out the quality of the waters and the diversity of macrofauna in them. This research method uses quantitative descriptive, river water quality test using physical and chemical parameters namely temperature, pH, DO, BOD, TSS, TDS, salinity, brightness, depth. Calculation of macrofauna diversity using the Shannon Winner formula, the results showed no macrofauna species were high in these waters. The species found were Trichogaster pectoralis, Caesio chyrsosonus, Anadara granosa, Corbicula javanica, Macrobrachium rosenbergii, Oreocromis musambicus, Portunus pelagicus, Hypsiscus plumbea, Moolgarda seheli.
Keywords: macrofauna diversity, water quality, Alo river
ABSTRAK
Untuk kepentingan sehari-hari seperti mencuci baju, mandi, irigasi pertanian dan lain sebagainya. Namun kondisi perairan di sungai tersebut saat ini sudah tidak dapat di manfaatkan lagi untuk kegiatan sehari-hari akibat pembuangan limbah baik dari lapindo ataupun limbah rumah tangga yang di alirkan ke sungai. Limbah tersebut berupa limbah padat dan cair, yang mungkin terdiri atas bahan organik, yang bercaun ataupun tidak beracun. Tujuan dari penelitan untuk mengetahui kualitas perairan dan diversitas makrofauna di dalamnya. Metode penelitian ni menggunakan deskriptif kuantitatif, uji kualitas air sungai menggunakan parameter fisika dan kimia yaitu suhu, pH, DO, BOD, TSS, TDS, salinitas, kecerahan, kedalaman. Diversitas makrofauna Sungai Alo merupakan salah satu sungai yang ada di Sidoarjo, sungai tersebut merupakan cabang dari sungai porong, sepanjang alirannya terdapat pemukiman, pertanian, pertambakan. Sedangkan daerah muaranya menjadi tempat tangkapan ikan. Sungai Alo juga di manfaatkan oleh masyarakat sekitar menggunakan rumus Shannon Winner dan di identifikasi, hasil penelitian menunjukkan spesies makrofauna yang tinggi di dalan perairan tersebut. Speseies yang di temukan antara lain yaitu Trichogaster pectoralis, Caesio chyrsosonus, Anadara granosa, Corbicula javanica, Macrobrachium rosenbergii, Oreocromis musambicus, Portunus pelagicus, Hypsiscus plumbea, Moolgarda seheli.
Kata Kunci: diversitas makrofauna, kualitas air, sungai Alo
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Li, Fengchao. "Protozoan community character in relation to trophic level in the Beijing section of the Juma River." Biodiversity Science 14, no. 4 (2006): 327. http://dx.doi.org/10.1360/biodiv.060004.
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Suryani, Suryani. "Kualitas Parameter Fisik dan Kimia Perairan Sungai Sago Kota Pekanbaru Tahun 2016." Jurnal Katalisator 4, no. 1 (April 30, 2019): 32. http://dx.doi.org/10.22216/jk.v4i1.2834.
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<p><em>Sungai merupakan perairan yang mengalir dan membawa bahan-bahan terlarut di dalamnya. Bahan-bahan yang terkandung dalam air sungai itu selain dapat memperkaya kandungan air yang positif dapat juga menjadi bahan yang berbahaya baik bagi lingkungan maupun organisme yang hidup didalamnya. Sungai Sago berada dalam wilayah pemukiman padat penduduk dan padat aktivitas.Penelitian ini dilakukan di wilayah Kota Pekanbaru. Tempat sampling penelitian adalah di Sungai Sago Kota Pekanbaru dengan pengambilan sampel pada 5 (lima) stasiun sampling di sepanjang Sungai Sago. Sampel air sungai Sago dianalisis secara eksitu di Laboratorium Ekologi Perairan Fakultas Perikanan dan Ilmu Kelautan Universitas Riau Pekanbaru. Beberapa parameter diukur dan dinilai langsung dilokasi sampling secara insitu. Sampel yang digunakan dalam penelitian ini adalah air Sungai Sago, endapan sungai yang akan diteliti, bahan-bahan titrasi di laboratorium sampel dari Sungai Sago. Hasil analisis untuk parameter fisik dan kimia kualitas perairan, sungai sago mengalami pencemaran. Hal ini disebabkan oleh semakin bervariasinya aktivitas manusia yang memproduksi limbah berupa bahan organik dan anorganik serta karena terjadinya akumulasi dari aktivitas di hulu.</em></p><p><em><br /></em></p><p><em>Rivers are flowing waters and carrying dissolved materials in them. The materials contained in the river water in addition can enrich the positive water content can also be a dangerous material for the environment and organisms living therein. Sago River is located in a densely populated and densely populated residential area. The research was conducted in the area of Pekanbaru City. The sampling site of the research is in Sungai Sago Pekanbaru with sampling at 5 (five) sampling stations along the Sago River. Sago river water samples were analyzed exitually in the Marine Ecology Laboratory of Fisheries and Marine Sciences Faculty of Riau University of Pekanbaru. Some parameters are measured and assessed directly in the location of sampling in situ. The sample used in this research is Sago River water, river sediment to be studied, titration materials in laboratory samples from Sago River. The results of the analysis for the physical and chemical parameters of water quality, sago river experiencing contamination. This is caused by the increasing variety of human activities that produce waste in the form of organic and inorganic materials and because of the accumulation of upstream activities.</em></p><p><em><br /></em></p>
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Chiffre, Axelle, François Degiorgi, Nadia Morin-Crini, Audrey Bolard, Etienne Chanez, and Pierre-Marie Badot. "PAH occurrence in chalk river systems from the Jura region (France). Pertinence of suspended particulate matter and sediment as matrices for river quality monitoring." Environmental Science and Pollution Research 22, no. 22 (July 4, 2015): 17486–98. http://dx.doi.org/10.1007/s11356-015-4897-5.
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Duarte, Miqueias Lima, and Eliomar Pereira da Silva Filho. "Estimativa da erosividade da chuva na bacia hidrográfica do rio Juma com base em dados do satélite TRMM / Estimation of rain erosion in the Juma river basin based on TRMM satellite data." Caderno de Geografia 29, no. 56 (February 20, 2019): 45. http://dx.doi.org/10.5752/p.2318-2962.2019v29n56p45.
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Conhecer o potencial da chuva em causar erosão do solo é de fundamental importância para a compreensão da fragilidade de uma região, essas informações podem ser utilizadas na prevenção e controle da degradação do solo, auxiliando o planejamento territorial. Este estudo tem por objetivo estimar a erosividade da chuva na bacia hidrográfica do rio Juma, no sul do estado do Amazonas. Foram utilizados dados mensais pluviométricos do produto 3B42-V7 do sensor TRMM obtidos na plataforma Giovanni e comparados com dados de superfície, para a série histórica de 1998 a 2016. O índice de erosividade da chuva foi obtido a partir de um modelo proposto por Oliveira Jr e Medina (1990) desenvolvido para a região. Os resultados obtidos apontam que a variação espacial do índice de erosividade da chuva ao longo da bacia do rio Juma foi pequena (média de 11,66 MJ.mm.ha-1.h-1.ano-1), as maiores variações estão relacionadas a sazonalidade regional, sendo que o mês de julho apresenta o menor índice de erosividade médio (47,74 MJ.mm.ha-1.h-1.ano-1), enquanto que o mês de fevereiro apresentou o maior índice de erosividade (145,73 MJ.mm.ha-1.h-1.ano-1).Palavras–chave: Potencial erosivo da chuva, Degradação do solo, Sensor orbital.Abstract Knowing the potential of rain to cause soil erosion is of fundamental importance to understand the fragility of a region, this information can be used in the prevention and control of soil degradation, assisting the territorial planning. This study aims to estimate the rainfall erosivity in the river basin of the Juma, in the south of the state of Amazonas. Monthly rainfall data from the 3B42-V7 TRMM sensor product obtained from the Giovanni platform and compared with surface data were used for the historical series from 1998 to 2016. The rainfall erosivity index was obtained from a model proposed by Oliveira Jr and Medina (1990) developed for the region. The results indicate that the spatial variation of the rainfall erosivity index along the Juma river basin was small (mean of 11.66 MJ.mm.ha-1.h-1.year-1), the most significant variations are related to regional seasonality, and the month of July It has the lowest mean erosivity index (47.74 MJ.mm.ha-1.h-1.year-1), while February presented the highest erosivity index (145.73 MJ.mm.ha-1.h-1.year-1).Keywords: Erosive potential of rain, Soil degradation, Orbital Sensor.
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Meisyanti, Meisyanti, and Khina Januar Rahmawati. "Environmental Communication Strategy in Overcoming Cisadane River Water Pollution." Jurnal Komunikasi 13, no. 1 (March 7, 2021): 69. http://dx.doi.org/10.24912/jk.v13i1.9307.
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Water is the most important component for humans to maintain their life, but pollution also occurs in water. One of the rivers that have been polluted is the Cisadane River which stretches from West Java to Banten. This case of Cisadane River pollution is one of the cases included in the environmental communication study, where the role of the stakeholders in it is needed. The unity of purpose to overcome Cisadane River pollution can be done in various ways, one of them is by implementing an environmental communication strategy. The purpose of this study is to analyze and identify environmental communication strategies in handling Cisadane River pollution that have been carried out by the Government and the Environmental Service of Tangerang City and South Tangerang City and to develop environmental communication strategies to overcome the problem of Cisadane River pollution. The research method was using descriptive qualitative with data collection techniques interviews, observation and Focus Group Discussion (FGD). The results of this study indicate that the environmental communication strategy carried out by the Government and the Environmental Service of Tangerang City and South Tangerang City in terms of the communication component has been running well. To make it even better, it needs the consistency in the management of the environmental communication. The development of an environmental communication strategy model uses transformational communication features by adding several things to the strategies that have been implemented by the City Government and the Environmental Service of Tangerang City and South Tangerang City. For implementation this strategy, they need to monitor, evaluate and the synergy between the provincial, city government and the Environmental Service and other services in each area traversed by the Cisadane River. Air menjadi komponen terpenting bagi manusia untuk mempertahankan kehidupannya, namun pencemaran juga terjadi pada air. Salah satu sungai yang tercemar adalah Sungai Cisadane yang terbentang dari Jawa Barat hingga Banten. Kasus pencemaran Sungai Cisadane ini merupakan salah satu kasus yang termasuk dalam kajian komunikasi lingkungan, di mana dibutuhkan peran dari stakeholder yang di dalamnya. Kesatuan tujuan untuk mengatasi pencemaran Sungai Cisadane ini bisa dilakukan dengan berbagai cara, salah satunya dengan menjalankan strategi komunikasi lingkungan. Tujuan penelitian ini adalah untuk menganalisa dan mengidentifikasi strategi komunikasi lingkungan dalam penanganan pencemaran Sungai Cisadane yang sudah dilakukan oleh Pemerintah Kota dan Dinas Lingkungan Hidup Kota Tangerang dan Kota Tangerang Selatan dan untuk mengembangkan strategi komunikasi lingkungan untuk mengatasi masalah pencemaran Sungai Cisadane. Metode penelitian yang digunakan adalah deskriptif kualitatif dengan teknik pengumpulan data wawancara, observasi dan Focus Group Discussion (FGD). Hasil penelitian ini menyatakan bahwa strategi komunikasi lingkungan yang dijalankan oleh Pemerintah dan Dinas Lingkungan Hidup Kota Tangerang maupun Kota Tangerang Selatan ditinjau dari komponen komunikasi sudah berjalan dengan baik. Agar lebih baik lagi diperlukan konsistensi dalam pengelolaan strategi komunikasi lingkungan tersebut. Pengembangan model strategi komunikasi lingkungan menggunakan fitur komunikasi transformasional dengan menambahkan beberapa hal yang sudah dijalankan oleh Pemerintah Kota dan DLH Kota Tangerang dan Kota Tangerang Selatan. Dalam pelaksanaan strategi ini juga dibutuhkan monitoring, evaluasi dan perlu adanya sinergi antara pemerintah provinsi, kota maupun DLH dan dinas terkait lainnya pada setiap daerah yang dilintasi oleh Sungai Cisadane.
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Elmi Mohamed, Abdullahi. "Managing Shared Basins in the Horn of Africa – Ethiopian Projects on the Juba and Shabelle Rivers and Downstream Effects in Somalia." Natural Resources and Conservation 1, no. 2 (September 2013): 35–49. http://dx.doi.org/10.13189/nrc.2013.010203.
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Utomo, Agus Djoko, Mohamad Rasyid Ridho, Edward Saleh, and Dinar Dwi Anugerah Putranto. "PENCEMARAN DI SUNGAI BENGAWAN SOLO ANTARA SOLO DAN SRAGEN, JAWA TENGAH." BAWAL Widya Riset Perikanan Tangkap 3, no. 1 (February 7, 2017): 25. http://dx.doi.org/10.15578/bawal.3.1.2010.25-32.
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Bengawan Solo merupakan sungai yang sudah banyak mengalami perubahan oleh Waduk, Bendungan, Sodetan, dan lain-lain. Bengawan Solo melewati Provinsi Jawa Tengah dan Jawa Timur yang padat penduduk, sekitar 15,2 juta jiwa berdomisili di satuan wilayah Sungai Bengawan Solo dan juga banyak terdapat industri. Permasalahan tersebut dapat berpengaruh langsung terhadap kehidupan organisme air kajian tentang parameter físika-kimia perairan diharapkan dapat memberikan informasi tentang status kualitas perairan di Bengawan Solo. Parameter yang diamati dalam penelitianini adalah oksigen terlarut, karbondioksida, pH, fenol, minyak-lemak, amonia, Cd, Cr, Zn, Pb, Cu, dan CN. Terdapat indikasi bahwa Bengawan Solo di daerah Solo-Sragen dan sekitarnya telah tercemar bobot dengan kualitas air buruk yaitu oksigen rendah (beberapa lokasi kurang dari 2 mg/L, karbon dioksida tinggi (8,8-34,32 mg/L), NH3-N bebas tinggi (beberapa lokasi lebih dari 0,2 mg/L), COD tinggi (1,64-172 mg/L), fenol tinggi (0,087-1,431 mg/L), minyak lemak tinggi (2,6-54,6 mg/L).Konsentrasi logam bobot pada beberapa lokasi yaitu Kampung Sewu, Bak Kramat, dan Tundungan cukup tinggi yaitu Cr= 0,180- 0,375 mg/L, Cu=0,026-0,293 mg/L, dan Zn=0,515-2,892 mg/L. Demikian juga kandungan logam bobot pada ikan sapu-sapu (Liposarcus pardalis) cukup tinggi pada beberapa lokasi Kampung Sewu, Tundungan, Bak Kramat, dan Butuh; Cr=0,856- 2,154 mg/kg, Cu=3, 69-198,48 mg/kg, Pb=1,067 - 2,006 mg/kg, dan Zn=53,516-102,285 mg/kg. Perlu dilakukan pengendalian pencemaran di Bengawan Solo dengan cara meningkatkan kesadaran bersama, pemantauan pembuangan limbah, dan penindakan bagi para pelanggaran. Bengawan Solo River is highly modified by dams, impoundment, reservoir, channelization, etc. It traverse through Central Java and East Java province in its passage from headwaters to the sea. Industries and heavy population (approximately 15.2 million people) near the river have potentially wreaked havoc upon the river. Study on physical and chemical parameters expected provide enough information on water quality condition in Bengawan Solo River. Parameters under study were disolved oxygen, carbondioxid, pH, fenol, NH3-N, oil, and grease, COD, Cr, Cd, Pb, Zn, Cu, and CN. An overview of water quality of Bengawan Solo River in Solo-Sragen region indicates that the segments is already strongly polluted as indicated as low oxygen (some location less than 2 mg/L) and high amount of CO2 (8,8-34.32), high free NH3-N (some location more than 0,2 mg/L), COD (1,64-172 mg/L), fenol (0.087- 1,431 mg/L), and oil and grease (2,6-54.6 mg/L). Heavy metals content of some location at Kampung Sewu, Bak Kramat, and Butuh were Cr=0,180-0,375 mg/L, Cu=0,026-0,293 mg/L, Zn=0,515-2,892 mg/L. Heavy metals content in fish tissue of sapu-sapu were high enough at some location (Kampung Sewu, Tundungan, Bak Kramat, and Butuh); Cr=0,856-2,154 mg/kg, Cu=3,69-198,48 mg/kg, Pb=1,067- 2,006 mg/kg, and Zn=53,516-102,285 mg/kg.
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Greenwood, Philip, Jan Bauer, and Nikolaus J. Kuhn. "Assessing hillslope sediment generation potential by tree throw: a preliminary field study along a small river valley in the Jura Mountains, northwest Switzerland." Geographica Helvetica 76, no. 3 (July 14, 2021): 319–33. http://dx.doi.org/10.5194/gh-76-319-2021.
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Abstract. A preliminary field-based investigation was undertaken in a small (< 10 km2) river valley located in the mountainous Jura region of northwest Switzerland. The aims of the work were to assess sediment generation and annual sediment transport rates by tree throw on forested hillslopes and to document surface hydrology characteristics on four fresh tree throw mounds associated with recent tree throws over a 24 d monitoring period. For the tree throw mounds, average sediment recovery ranged from 7.7–28.2 g (dry weight), equivalent to a suspended sediment concentration of 145.2–327.8 g L−1, and runoff coefficients ranged from 1.0 %–4.2 %. Based on a soil bulk density value of 1044 kg m−3, upslope runoff generation areas were denuded by an average of 0.14 mm within the 24 d monitoring period, representing an erosion rate equivalent to 2.1 mm a−1. This means that a ca. 50 cm high tree throw mound could theoretically persist for around 200–250 years. For tree throw work, the dimensions of 215 fallen trees were measured and their locations mapped in 12 separate locations where tree throw was prominent along the river valley, representing a cumulative area equivalent to 5.3 ha (average density equivalent to 43 trees ha−1). The 215 tree throws generated a total of 20.1 m3 of fine sediment (< 2 mm dia.), or the equivalent of 3.8×10-4 m3 m−2. The process of tree throw was originally attributed to two extreme weather events that occurred across west and central Europe in late December 1999. Taking the 18-year period since both storms, this represents an annual sediment transport rate of 2.7×10-5 m3 m−1 a−1. Exploring the relationship with wind on fall direction, however, 65.5 % of mapped tree throws (n= 143) generally fell in a downslope direction irrespective of hillslope aspect on which they were located. Given the similar fall orientation for most trees, this infers that severe storms may not have been responsible for the majority of tree throws, but instead, their upheave might be related to root failure. Given the relative maturity (average age 41 years) of fallen trees in this river valley, our data suggest that once trees attain a certain age, their physiognomy (i.e. height, mass, and centre of gravity) compromises their ability to remain securely anchored. We tentatively attribute this possibility to the presence of bedrock close to the surface, and to the shallow soil profile overlaying the steep rocky slopes. More in-depth studies are required to firstly confirm our findings, and secondly, tree throw studies should be undertaken in other Jura mountain river valleys to assess whether these results are representative.
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Preusser, F. "Characterisation and evolution of the River Rhine system." Netherlands Journal of Geosciences - Geologie en Mijnbouw 87, no. 1 (March 2008): 7–19. http://dx.doi.org/10.1017/s0016774600024008.
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AbstractThe River Rhine and its tributaries represent one of the largest drainage systems in Europe. Its prominence among other fluvial systems is due to the location of its headwaters within the central Swiss Alps, which were repeatedly glaciated during the Quaternary, and the concurrence of major parts of the River Rhine course with the European Cenozoic Rift System. Sediments of the Rhine have thus recorded both changes in climate and tectonic activity as well as sea level change in the lower part of the river course.The River Rhine is composed of different subdivisions characterised by distinct geographical and geological settings. Vorder-and Hinterrhein in the headwaters are inner-alpine rivers frequently influenced in their course by tectonic lines and the blockage of valley floors by the deposits of mass movements. The Alpenrhein is located in a main Alpine valley that drains into a large foreland basin, the Bodensee (Lake Constance). The Hochrhein flows out of the lake following the Jura Mountains in a western direction. All these areas display a series of geological features such as moraine ridges and outwash plains, which directly reflect Quaternary glaciations of the Alps. The Oberrhein (Upper Rhine) Valley, as a graben structure, is part of the rifting system that started to develop during the middle Tertiary. The northern end of the graben is represented by the triple junction of the Mainz Basin, which is mainly characterised by the remains of marine transgressions that occurred during the initial rifting phase. The Rhine continues following the western branch of the tectonic system by passing through the Rhenish Massif. Uplift in this so-called Mittelrhein (Middle Rhine) area is well documented by a flight of late Tertiary to Quaternary river terraces. This region is also characterised by young volcanic activity as found, for example, in the Eifel volcanic field. The Niederheinische Bucht (Lower Rhine Embayment), especially the Roer Valley Rift System, represents the northern continuation of the rifting system. This area is characterised by differential uplift in the southern and subsidence in the northern part of the basin, which continues into the Netherlands. Here, the main stream of the River Rhine is separated into different branches developing an active delta at the coast of the North Sea. When the North Sea Basin was covered by ice during the Elsterian, Saalian and probably also the Weichselian glaciation and global sea level was low, the Rhine continued its course through the English Channel and flowed into the North Atlantic off Brittany.
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Bichet, Vincent, Michel Campy, Jean-François Buoncristiani, Christian Digiovanni, Michel Meybeck, and Hervé Richard. "Variations in Sediment Yield from the Upper Doubs River Carbonate Watershed (Jura, France) since the Late-Glacial Period." Quaternary Research 51, no. 3 (May 1999): 267–79. http://dx.doi.org/10.1006/qres.1999.2037.
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AbstractThe Upper Doubs River Valley is a 910-km2watershed feeding into Lake Chaillexon. The lake was formed by a natural rockfall at the end of the Bølling Chronozone (around 14,250 cal yr B.P.) and since then has trapped material eroded from the watershed. The filling process and variations in sediment yield have been investigated by mechanical coring, seismic surveys, and electric soundings. The detrital sediment yield of the upstream watershed can be calculated by quantifying the sedimentary stocks for each climatic stage of the Late-Glacial period and Holocene Epoch and estimating the lake's entrapment capacity. This enables us to determine the intensity of the erosion processes in relation to climate and environmental factors. The Bølling–Allerød Interstade produced the greatest yields with mean values of 19,500 metric tons per calendar year (t/yr). The Younger Dryas Chronozone saw a sharp fall (8900 t/yr) that continued into the Preboreal (2100 t/yr). Clastic supply increased during the Boreal (4500 t/yr) before declining again in the Early Atlantic (2400 t/yr). Since then, yields have risen from 4500 t/yr in the Late Atlantic to 6800 t/yr in the Subboreal and 11,100 t/yr in the Subatlantic. Comparison of quantitative data with the qualitative analysis of the deposits and with the paleohydrologic curve of the watershed based on level fluctuations in lakes around Chaillexon shows that climate was the controlling factor of sediment yield until the Late Atlantic. From the Late Atlantic–Subboreal around 5400 cal yr B.P. (470014C yr B.P.) and especially from the end of the Subboreal Chronozone and during the Subatlantic Chronozone (2770 cal yr B.P./270014C yr B.P.–present) climatic constraints have been compounded by human activity related to forest clearing and land use.
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Al Idrus, Syarifa Wahidah. "ANALISIS PENCEMARAN AIR MENGGUNAKAN METODE SEDERHANA PADA SUNGAI JANGKUK, KEKALIK DAN SEKARBELA KOTA MATARAM." Paedagoria | FKIP UMMat 5, no. 2 (January 27, 2018): 8. http://dx.doi.org/10.31764/paedagoria.v5i2.85.
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Abstrak: Telah dilakukan penelitian tentang analisis pencemaran air menggunakan metode sederhana pada sungai jangkuk, kekalik dan sekarbela. Tujuan dari penelitian ini untuk mengetahui pencemaran yang terjadi pada ketigasungai tersebut dilihat dari uji fisik, uji kimia dan uji biologis secara sederhana. Penelitian ini menggunakan alat dan bahan yang banyak dijumpai sehingga masyarakat dapat menganalisis sendiri untuk membuktikan kondisi air yang digunakan. Dari hasil pengamatan yang dilakukan secara fisik, ketiga sungai tersebut mengalami pencemaran dari segi bau, warna dan suhu. Berdasarkan pengujian secara biologi terdapat aktivitas biologis dan kimiawi mikroorganisme. Hasil pengujian secara kimia, maka dapat diketahui pH sampel air tersebut sebesar 5 (bersifat asam), kemudian pengujian kimia ini juga dilakukan dengan teh, terdapat gumpalan hitam pada ketiga sampel air, perubahan warna menjadi gelap dan lapisan minyak pada permukaan air yang menunjukkan kualitas air tidak dapat dijadikan bahan baku air minum. Penyebab pencemaranair pada ketiga sungai tersebut adalah limbah rumah tangga, limbah pertanian dan limbah industri. Kondisi ini dapat diatasi dengan melestarikan hutan di hulu sungai, dan tidak membuang limbah ke sungai baik cair ataupun padatAbstract: A research on water pollution analysis has been conducted using simple methods in river bowl, reverse and sekarbela. The purpose of this research is to know the pollution occurring on the three waters is seen from the physical test, chemical test and biological test in simple way. This study uses tools and materials that many found so that people can analyze themselves to prove the condition of water used. From the observations made physically, the three rivers are polluted in terms of smell, color and temperature. Based on biological testing there are biological and chemical activity of microorganisms. Chemical test results, it can be seen that the pH of the water sample is 5 (acidic), then chemical testing is also done with tea, there are black clumps on the three water samples, the color change becomes dark and the oil layer on the water surface indicating the water quality can not be used as raw drinking water. The causes of pollution in these three rivers are household waste, agricultural waste and industrial waste. This condition can be overcome by preserving the forest in the upper stream, and not dispose of waste into the river either liquid or solid.
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Dgebuadze, Yu Yu, and O. F. Chernova. "Scale structure variability of “forms flock” of Barbus (=Labeobarbus) intermedius and Varicorhinus jubae from the Genale River (Eastern Ethiopia)." Journal of Ichthyology 52, no. 11 (December 2012): 881–907. http://dx.doi.org/10.1134/s0032945212110033.
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Pujiati, Pujiati, Asri Musandi Waraulia, and Sri Lestari. "Edukasi Dampak Eksploitasi Dan Potensi Pemanfaatan Ekosistem Sungai Bagi Masyarakat Penambang Pasir Ilegal Di Desa Belotan, Bendo, Magetan." PAMBUDI 3, no. 1 (August 26, 2019): 8–13. http://dx.doi.org/10.33503/pambudi.v3i1.453.
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ABSTRACT
The mining industry adds the country’s income and engage employment. In contrast, it also prones to environmental destruction. Many mining activities that invite the spotlight of the surrounding community due to environmental destruction, endanger the safety of the lives of miners, trigger natural disasters and also socio-economic problems. To reduce the number of sand miners, especially in Belotan village, Magetan, this partnership program was created with the aim of providing knowledge to the community about the importance of maintaining river ecosystems and the potential benefit from river ecosystems. The method used in this activity is a survey, giving an extension questionnaire about the importance of maintaining river ecosystems, monitoring and evaluation. Based on this program,it can be concluded that there was improvement of societies understanding related to: 1)the impact of illegal of sand mining and 2) how to exploit river properly. It is proven by more than 60 % respondents agree with the usefulness of the material that has been presented and get new information about river potential in village area
ABSTRAK
Industri pertambangan selain mendatangkan devisa dan menyedot lapangan kerja juga rawan terhadap pengrusakan lingkungan. Banyak kegiatan penambangan yang mengundang sorotan masyarakat sekitarnya karena pengrusakan lingkungan, membahayakan keselamatan jiwa penambang, memicu terjadinya bencana alam dan juga masalah sosial ekonomi. Untuk mengurangi jumlah penambang pasir khususnya di desa Belotan, Magetan maka program kemitraan ini dibuat dengan tujuan memberikan pengetahuan kepada masyarakat tentang pentingnya menjaga ekosistem sungai dan potensi pemanfaatan ekosistem sungai yang baik dan benar. Metode yang dipakai dalam kegiatan ini adalah survey, pemberian kuisioner penyuluhan tentang pentingnya menjaga ekosistem sungai, monitoring dan evaluasi. Berdasarkan hasil kegiatan diketahui bahwa terjadi peningkatan mengenai pemahaman masyarakat mengenai dampak penambangan pasir secara ilegal dan peningkatan pemahaman masyarakat mengenai pemanfaatan sungai dengan baik dan benar. Hal ini dibuktikan dengan lebih dari 60% responden setuju dan mengetahui tentang kebermanfaatan materi yang disajikan dengan mendapatkan pengetahuan baru tentang potensi sungai di area desa.
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Novico, Franto, and Yusuf Adam Priohandono. "ANALYSIS OF EROSION AND SEDIMENTATION PATTERNS USING SOFTWARE OF MIKE 21 HDFM-MT IN THE KAPUAS MURUNG RIVER MOUTH CENTRAL KALIMANTAN PROVINCE." BULLETIN OF THE MARINE GEOLOGY 27, no. 1 (February 15, 2016): 35. http://dx.doi.org/10.32693/bomg.27.1.2012.44.
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The public transportation system along the Kapuas River, Central Kalimantan are highly depend on water transportation. Natural condition gives high distribution to the smoothness of the vessel traffic along the Kapuas Murung River. The local government has planned to build specific port for stock pile at the Batanjung which would face with natural phenomena of sedimentation and erosion at a river mouth. Erosion and sedimentation could be predicted not only by field observing but it is also needed hypotheses using software analysis. Hydrodynamics and transport sediment models by Mike 21 HDFM-MT software will be applied to describe the position of sedimentations and erosions at a river mouth. Model is assumed by two different river conditions, wet and dry seasons. Based on two types of conditions the model would also describe the river flow and sediment transport at spring and neap periods. Tidal fluctuations and a river current as field observation data would be verified with the result of model simulations. Based on field observation and simulation results could be known the verification of tidal has an 89.74% correlation while the river current correlation has 43.6%. Moreover, based on the simulation the sediment patterns in flood period have a larger area than ebb period. Furthermore, the erosion patterns dominantly occur during wet and dry season within ebb period. Water depths and sediment patterns should be considered by the vessels that will use the navigation channel at a river mouth.
Keywords: Kapuas Murung River, software Mike 21 HDFM-MT, erosion and sedimentation pattern
Penduduk yang berada di sepanjang Sungai Kapuas sangat bergantung pada transportasi air. Kelancaran lalu lintas kapal di sepanjang Sungai Kapuas Murung sangat tergantung dengan kondisi alam yang terjadi. Rencana pemerintah daerah yang akan membangun pelabuhan khusus batubara di Batanjung akan berhadapan dengan fenomena alam yang umum terjadi di muara sungai yaitu sedimentasi dan erosi. Prediksi akan terjadinya sedimentasi dan erosi tidak hanya ditunjang pengamatan lapangan namun juga perlu dilakukan dengan melakukan hipotesa menggunakan bantuan analisis software. Penelitian ini akan menggambarkan posisi sedimentasi dan erosi di sekitar muara dengan pemodelan hidrodinamika dan transport sedimen yang menggunakan Software MIKE 21 HDFM-MT. Model dibuat dengan mengasumsikan kondisi sungai pada saat musim hujan dan musim kemarau. Berdasarkan dua kondisi tersebut model akan menggambarkan sebaran arus dan sebaran sedimen untuk periode bulan baru dan perbani. Data lapangan pasang surut dan kecepatan arus akan diverifikasi ke hasil simulasi model. Berdasarkan data hasil pengukuran lapangan dan data hasil simulasi model maka dapat diketahui bahwa verifikasi nilai pasang surut menunjukkan korelasi sebesar 89.74% sedangkan verifikasi nilai arus sebesar 43.6%. Selanjutnya dari hasil simulasi didapatkan bahwa pada saat pasang, gambaran posisi sedimentasi banyak terdapat pada bagian timur muara sungai dengan penyebaran cukup luas sedangkan pada kondisi surut area lebih sedikit. Selanjutnya gambaran daerah yang tererosi banyak terjadi pada saat air surut baik untuk musim hujan maupun kemarau. Kapal yang akan menggunakan muara sebagai alur pelayaran harus mempertimbangkan kondisi kedalaman air yang ada dan juga pola sedimentasi yang terjadi.
Kata kunci: Sungai Kapuas Murung, software Mike 21FM HD-MT, erosi dan pola sedimentasi
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Saraswati, Adinda Riskia, and Achmad Maulana Malik Jamil. "PENGEMBANGAN PARIWISATA ALAM DI KECAMATAN PONCOKUSUMO MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS BERBASIS WEB." JPIG (Jurnal Pendidikan dan Ilmu Geografi) 3, no. 2 (March 18, 2019): 273–84. http://dx.doi.org/10.21067/jpig.v3i2.2945.
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Kecamatan Poncokusumo merupakan daerah agrowisata di Kabupaten Malang, Tujuan penelitian ini membuat pengembangan pariwisata dengan menggunakan sistem informasi geografis berbasis web sehingga informasi tersebut dapat diakses dengan mudah oleh masysrakat. Metode yang digunakan dalam penelitian ini adalah kuesioner, wawancara dan dokumentasi. Subyek dalam penelitian ini adalah wisatawan yang datang ke obyek wisata, pengelola obyek wisata alam yang berada di Kecamatan Poncokusumo, tokoh masyarakat di sekitar obyek wisata alam dan Dinas Pariwisata Kabupaten Malang. Penelitian ini merupakan penelitian kualitatif menggunakan analisis SWOT dalam pengembangan pariwisata alam di Kecamatan Poncokusumo. Berdasarkan hasil penelitian, banyak sekali potensi alam yang berada di Kecamatan Poncokusumo antara lain coban bidadari, coban pelangi, ledok ombo, gunungsari sunset, river tubing ledok ombo dan juga river tubing sedaer.
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Kasse, Cornelis. "Fluvial response to rapid high-amplitude lake-level changes during the Late Weichselian and early Holocene, Ain River valley, Jura, France." Boreas 43, no. 2 (December 19, 2013): 403–21. http://dx.doi.org/10.1111/bor.12058.
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DIAS, ANGELICA C., GABRIEL S. C. SILVA, CLAUDIO OLIVEIRA, and FÁBIO F. ROXO. "A new species of Hisonotus (Siluriformes: Loricariidae) from Aripuanã river, Amazon basin, Brazil." Zootaxa 4504, no. 4 (October 26, 2018): 577. http://dx.doi.org/10.11646/zootaxa.4504.4.8.
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A new species of Hisonotus from rio Juma, located at the right margin of the lower rio Aripuanã, rio Madeira basin is described. The new species is distinguished from its congeners mainly by a reddish-tipped premaxillary and dentary teeth, a V-shaped spinelet, three lateral plates in abdominal series, the coloration pattern of caudal fin with three transversal dark bars, and by morphometric characters.
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Abbas, Ersis Warmansyah, Muhammad Rezky Noor Handy, Rizky M. Shaleh, and Noorya Tasya Febrylia Witari Hadi. "Ecotourism of Martapura River Banjarmasin as a Learning Resources on Social Studies." Innovation of Social Studies Journal 1, no. 2 (May 24, 2020): 111. http://dx.doi.org/10.20527/iis.v1i2.2024.
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Sungai sebagai satu bentuk ekosistem memiliki potensi untuk dikembangkan di berbagai aspek. Secara khusus jika dimaksimalkan dalam perspektif pariwisata, maka sungai dapat dijadikan sebagai objek wisata yang menarik minat wisatawan. Namun, sungai dapat pula dimanfaatkan untuk kepentingan sumber belajar. Tentunya, perihal ini disesuaikan dengan kebutuhan dan relevansi materi ajar. Adapun materi yang relevan dan bisa memuat sungai sebagai sumber belajar adalah mata pelajaran IPS. Penelitian ini mengkhususkan deskripsi ekowisata pada locus penelitian Banjarmasin dengan fokus sungai Martapura dan kaitannya dengan sumber belajar. Dengan demikian tujuan penelitian adalah mendeskripsikan bentuk ekowisata sungai Martapura serta relevansinya sebagai sumber belajar IPS. Pendekatan kualitatif digunakan dalam penelitian. Teknik pengumpulan data meliputi; wawancara, observasi, dan dokumentasi. Analisis data dimulai dari reduksi, penyajian, dan verifikasi data. Hasil Penelitian dideskripsikan: 1) ekowisata Sungai Martapura Kota Banjarmasin yang banyak diketahui oleh masyarakat Banjar adalah sungai dan Pasar Terapung yang menggunakan sungai sebagai media tempat jual-beli yang membantu peningkatan perekonomian masyarakat sekitar, sungai juga menjadi sarana transportasi masyarakat Banjar, pemerintah juga dalam tahap berusaha menggunakan media sungai sebagai ikon kota seribu sungai dengan pasar terapung Siring Tendean yang menjadi primadonanya; 2) relevansi sungai martapura sebagai sumber belajar IPS dilakukan dengan menyesuaikan materi pada mata pelajaran IPS khususnya di kelas VII semester I dan II. Pada semester I materi yang dapat disampaikan terdapat pada tema “manusia, tempat, dan lingkungan”. Sedangkan semester II “aktivitas manusia dalam memenuhi kebutuhan”. Sungai Martapura diharapkan mampu memperkaya konten lokal sehingga peserta didik mendapatkan pengalaman pembelajaran yang kontekstual.
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Dewi, Hilda Kumala, Boedi Hendrarto, and Churun Ain. "KANDUNGAN KLOROFIL-A DAN FITOPLANKTON DI LOKASI YANG BERBEDA DI SUNGAI WULAN, KABUPATEN DEMAK." Management of Aquatic Resources Journal (MAQUARES) 6, no. 1 (March 9, 2018): 51–60. http://dx.doi.org/10.14710/marj.v6i1.19810.
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ABSTRAK Sungai Wulan adalah sungai yang melewati tiga kabupaten yaitu Grobogan, Kudus dan Demak. Sungai Wulan yang terletak di Kabupaten Demak, mempunyai dua percabangan yaitu Wulan Lama dan Wulan Baru. Sungai ini digunakan oleh masyarakat untuk berbagai keperluan seperti kegiatan perikanan, domestik dan transportasi. Di hilir sungai juga terdapat daerah mangrove. Dampak dari kegiatan manusia tersebut kemungkinan akan berpengaruh terhadap kualitas perairan, hal tersebut diduga berdampak terhadap keberadaan fitoplankton serta kandungan klorofil-a. Penelitian dilakukan pada bulan Maret – April 2016 bertujuan untuk mengetahui kandungan klorofil-a, fitoplankton dan status perairan berdasarkan kandungan klorofil-a dan kelimpahan fitoplankton. Metode yang digunakan adalah metode survei lapangan dengan teknik purposive sampling. Pengambilan sampel dilakukan di tiga lokasi yang berbeda yaitu dekat pemukiman (Stasun 1), Wulan Baru (Stasiun 2), dan Wulan Lama (Stasiun 3). Analisis Kruskal-Wallis untuk mengetahui perbedaan kandungan klorofil-a antar stasiun dan analisis Cluster untuk mengetahui kemiripan berdasarkan komunitas fitoplankton dan variabel lingkungan antar stasiun. Hasil penelitian menunjukkan kandungan klorofil-a berkisar antara 0,4955 - 1,3527 mg/l. Tidak ada perbedaan yang nyata kandungan klorofil-a per stasiun pada taraf kepercayaan 95% (0,05). Kelimpahan fitoplankton berkisar antara 9.458 – 12.422 ind/l. Fitoplankton yang didapatkan terdiri dari 35 genera yang terdiri dari 5 kelas yaitu Bacillariophyceae, Cyanophyceae, Dynophyceae, Chlorophyceae dan Euglenophyceae. Stasiun 2 dan Stasiun 3 mempunyai kemiripan komunitas fitoplankton dan variabel lingkungan dibandingkan dengan Stasiun 1. Status perairan Sungai Wulan berdasarkan kandungan klorofil-a tergolong oligotrofik dan berdasarkan kelimpahan fitoplankton tergolong mesotrofik.Kata Kunci: Klorofil-a; Fitoplankton; Sungai Wulan ABSTRACTWulan River is a river that passes through three regencies there are Grobogan, Kudus and Demak. Wulan River located in Demak Regency, has two branches there are Wulan Lama and Wulan Baru. This river has been used a lot by the residents for many activities such as fishery activities, domestic and transportation. There is also mangrove area in the downstream of Wulan River. The impact of those human activities presumably will affect the quality of the waters, it is also presumed to impact the existence of phytoplankton and the contents of chorophyl-a. This research was conducted on March - April 2016 aimed to know the contents of chlorophyl-a, the type and abundance of phytoplankton and the status of waters based on the content of chlorophyll-a and the abundance of phytoplankton. This research used survey method and purposive a sampling teqnique. The sampling was conducted in three different locations, that is in the nearby people residence (Station 1), Wulan Baru (Station 2) and Wulan Lama (Station 3). The Kruskal-Wallis analysis was used to determine differences of chlorophyll-a between the stations and Cluster analysis was used to determine similarity groups based on the phytoplankton community and environment variables between stations. The results showed chlorophyll-a range between 0,4955 - 1,3527 mg/l. There is no significant difference between the content of chlorophyll-a per station at the level of 95% (P < 0,05). The abundance of phytoplankton ranged between 9.458 – 12.422 ind/l. The phytoplankton was obtained consisting of 35 genus consisted of 5 classes, namely Bacillariophyceae, Cyanophyceae, Dynophyceae, Chlorophyceae and Euglenophyceae. Both Station 2 and Station 3 had a more similarity in the community of phytoplankton and the environment variable compared to the Station 1. The status waters of the Wulan Rivers based on the contents chlorophyll-a was classified into oligotrophic and based on the abundance of phytoplankton was classified into mesotrophic. Keywords: Chlorophyl-a; Phytoplankton; Wulan River
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Vega-Rodríguez, Miguel A., Carlos J. Pérez, Klara Reder, and Martina Flörke. "A stage-based approach to allocating water quality monitoring stations based on the WorldQual model: The Jubba River as a case study." Science of The Total Environment 762 (March 2021): 144162. http://dx.doi.org/10.1016/j.scitotenv.2020.144162.
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Greenwood, Philip, Jan Bauer, and Nikolaus J. Kuhn. "Sediment generation and soil mound denudation in areas of high-density tree throw along a river valley in the Jura Mountains, Switzerland." Journal of Mountain Science 18, no. 2 (February 2021): 377–91. http://dx.doi.org/10.1007/s11629-019-5867-z.
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ALI, Huda Abdullah, Mustafa Nadhim OWAID, and Shaimaa Fatih ALI. "Recording Thirteen New Species of Phytoplankton in Euphrates River Environment in Iraq." Walailak Journal of Science and Technology (WJST) 17, no. 3 (July 22, 2019): 200–211. http://dx.doi.org/10.48048/wjst.2020.6217.
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Thirteen species of phytoplankton were recorded for the first time in the Upper Euphrates River environment in Iraq during the period from January to June 2017. Five locations were selected along the river (Jubba village, Al-Baghdadi district, Dollab village, Hit city and Ramadi city). Among the 13 taxa, seven species belonging to the Chlorophyta division were identified: Excentrosphaera viridis, Monoraphidium caribeum, Nephrochlamys willeana, Oonephris palustris, Staurodesmus cuspidatus, Palmodictyon varium, and Westellopsis linearis. Moreover, two species of the Chrysohyta division, Rhizochrysis limnetica and Chrysidiastrum catenatum, were recorded in the study area. Two species belonging to the Bacillariophyta division were Acanthoceras zachariasii and Stenopterobia intermedia, showing in the study area. One species belonging to the Cyanophyta division, Stichosiphon sansibaricus, was recorded in Hit and Ramadi, and one species of Euglenophyta (Phacus orbicularis) was also recorded. Some physicochemical properties of the water from these locations were measured, including water temperature values ranging from 8 - 13 °C; pH ranging from 7.22 - 7.58; EC ranging from 580 - 755 µS.cm-1, while salinity was 0.30 - 0.44 g.L-1. Nutrient, such as nitrates, and phosphate values ranged from 156 - 232 µg.L-1 and 8.21 - 21 µg.L-1, respectively. The presence of new phytoplankton in Iraqi freshwater confirms the quality of river water in this area. This study was carried out to contribute to the knowledge of freshwater phytoplankton in Iraq for the upper region of the Euphrates River and their tributaries.
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Setiawan, Taufiqurrahman. "Permukiman Gua di Sub-Cekungan Payakumbuh." Berkala Arkeologi Sangkhakala 15, no. 2 (January 5, 2018): 224. http://dx.doi.org/10.24832/bas.v15i2.126.
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AbstractPre-historic men's life mainly relied on the availability of natural resources in the surrounding area. The settlements had inevitably to provide their needs of food and tools. Payakumbuh’s sub-basin, a strategic location for settlement, is a plain with a river in the middle that provides a place to shade and settle at its ‘Ngalau’ (caves and rock shelters). This location is also supported by the presence of hills and Sinamar River. Culturally, archaeological findings on the use of this site as a settlement are also found. This writing tries to describe the patterns of distribution and the use of caves at the Payakumbuh’s sub-basin. Archaeological landscape approach method is used to observe some physical and cultural aspects in that area. To provide further pictures, analyses on the neighbouring area are also done through the use of such softwares as Arc-View 3.2 and ArcGIS 9.3 with the extension of Network Analysis and Spatial Analysis.AbstrakKehidupan manusia pada masa prasejarah masih mengandalkan pada ketersediaan sumberdaya lingkungannya. Lokasi yang mereka jadikan sebagai lokasi permukiman harus menyediakan kebutuhan mereka akan makanan dan juga peralatannya. Sub-Cekungan Payakumbuh merupakan salah satu lokasi yang baik digunakan sebagai permukiman. Secara fisik, lokasi ini memiliki bentuklahan dataran dengan sungai yang mengalir pada bagian tengahnya, serta tersedianya lokasi berteduh dan bermukim di ‘Ngalau’ (gua dan ceruk). Lokasi ini didukung dengan bentangalam pedataran dengan bukit-bukit yang muncul di beberapa tempat dan juga didukung dengan keberadaan Sungai Sinamar. Secara budaya, pada lokasi ini juga telah ditemukan data arkeologi tentang pemanfaatanny sebagai lokasi permukiman. Pada tulisan ini akan membahas bagaimana pola sebaran dan pemanfaatan gua di Sub-Cekungan Payakumbuh. Untuk menjawab permasalahan tersebut digunakan model pendekatan arkeologi lansekap yang memperhatikan pada beberapa aspek fisik serta budaya pada lokasi tersebut. Untuk lebih menggambarkan hal tersebut digunakan juga analisis tetangga terdekat dengan bantuan software Arc-View 3.2 dan ArcGIS 9.3 dengan ekstensi Network Analysis, Buffer Wizard, dan Spasial Analysis.
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Syaputri, Martika Dini. "PERAN DINAS LINGKUNGAN HIDUP KOTA SURABAYA DALAM PENGENDALIAN PENCEMARAN AIR SUNGAI BRANTAS." Refleksi Hukum: Jurnal Ilmu Hukum 1, no. 2 (April 26, 2017): 131. http://dx.doi.org/10.24246/jrh.2017.v1.i2.p131-146.
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<p>Kondisi sungai Brantas Kota Surabaya semakin memprihatinkan akibat pencemaran dari limbah rumah tangga maupun limbah industri. Sebagai pemasok bahan baku PDAM, kualitas sungai Brantas harus diperhatikan sehingga tidak menimbulkan kerugian bagi masyarakat pengguna air. Letak sungai yang berada di kawasan hilir menjadikan beban pencemaran yang dialami sungai Brantas semakin berat serta lemahnya pengawasan dan penegakan hukum juga ikut mempengaruhi penurunan kualitas air sungai Brantas. Penelitian ini dilakukan untuk menunjukkan peran strategis Dinas Lingkungan Hidup Kota Surabaya dalam pengendalikan pencemaran air sungai Brantas baik dalam pengeluaran izin, pengawasan, pemberian sanksi maupun upaya dalam penanggulangan pencemaran.</p><p> </p><p><em>The condition of Brantas river in Surabaya is deteriorating as a result of contamination </em><em>from household as well as industrial waste. As the provider of water for municipal fresh </em><em>water supply service, the quality of Brantas river must be considered so as not to cause </em><em>harm to the water users. The river part which is located in the downstream region makes </em><em>the pollution even more severe. This condition is worsened by the lack of scrutiny and law </em><em>enforcement efforts which ultimately also cause the degradation of the water quality of </em><em>Brantas river. This study was performed to demonstrate the strategic role of the </em><em>Environmental Office of Surabaya Municipality in controlling Brantas river water pollution </em><em>in terms of the issuance of licenses, supervision, implementation of sanctions and </em><em>measures taken to prevent water pollution.</em></p>
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Yudo, Satmoko, and Nusa Idaman Said. "Kondisi Kualitas Air Sungai Surabaya Studi Kasus: Peningkatan Kualitas Air Baku PDAM Surabaya." Jurnal Teknologi Lingkungan 20, no. 1 (January 31, 2019): 19. http://dx.doi.org/10.29122/jtl.v20i1.2547.
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ABSTRACTThe disposal of domestic and industrial waste to Surabaya river continues to increase, resulting in worse physical condition and severe pollution. The existence of Surabaya river is very important for the sustainability of the economy and the survival of society, industry, and commerce around the riverbank. In addition, Surabaya River becomes the raw water source of PDAM Surabaya and more than 3 million consumers of Surabaya PDAM depend on the water quality condition of Surabaya River. The purpose of this activity is to know the current condition of Surabaya River’s water quality and to determine the technology that can improve the water quality of PDAM. The conclusion that can be drawn from the water quality condition of Surabaya River is the high concentration of organic matter pollutants. Moreover, it is increasing in the dry season. With the increasingly poor quality of raw water coming from Surabaya river, consequently, the cost of processing will become more expensive. Therefore, conventional processing is not able to eliminate the pollutant compounds. One alternative technology to improve the quality of raw water is to apply a pretreatment process with the process biological by using biofilter technology. Keywords: water quality in Surabaya River, Surabaya Municipal Waterworks (PDAM), Biofilter technology ABSTRAKPembuangan limbah domestik dan industri di sepanjang Kali Surabaya terus meningkat, mengakibatkan kondisi fisik sungai semakin memburuk dan mengalami pencemaran semakin berat. Keberadaan kali Surabaya sangat penting bagi keberlangsungan perekonomian dan kelangsungan hidup bagi masyarakat, industri, dan niaga di sekitar bantaran kali. Selain itu Kali Surabaya menjadi sumber air baku PDAM Surabaya dan lebih dari tiga juta konsumen PDAM Surabaya bergantung pada kondisi kualitas air Kali Surabaya. Tujuan kegiatan ini adalah untuk mengetahui kondisi kualitas air Kali Surabaya dan menentukan teknologi yang dapat meningkatkan kualitas air baku PDAM. Kesimpulan yang dapat diambil dari kondisi kualitas air Kali Surabaya adalah tingginya konsentrasi polutan zat organik yang semakin meningkat pada musim kemarau. Dengan semakin buruknya kualitas air baku yang berasal dari Kali Surabaya, akibatnya biaya pengolahan akan menjadi semakin mahal dan pengolahan secara konvesional tidak mampu menghilangkan senyawa polutan tersebut Salah satu teknologi alternatif untuk meningkatkan kualitas air baku PDAM adalah dengan menerapkan proses pengolahan awal (pretreatment) dengan proses biologis menggunakan teknologi biofilter. Kata kunci: kualitas air Kali Surabaya, PDAM Surabaya, Teknologi Biofilter