Bibliografie tematiche / Catchment loading

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Letteratura scientifica selezionata sul tema "Catchment loading"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 20 febbraio 2023

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Articoli di riviste sul tema "Catchment loading"

Bärlund, I., K. Rankinen, M. Järvinen, E. Huitu, N. Veijalainen, and L. Arvola. "Three approaches to estimate inorganic nitrogen loading under varying climatic conditions from a headwater catchment in Finland." Hydrology Research 40, no. 2-3 (April 1, 2009): 167–76. http://dx.doi.org/10.2166/nh.2009.058.

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Inorganic nitrogen loading was simulated using two dynamic catchment scale models, Integrated Nutrients in Catchments–Nitrogen (INCA-N) and the Generalized Watershed Loading Functions (GWLF). The simulated N loading was compared to a standard method to calculate annual loading using measured discharge and discharge-weighted concentrations. The main aim of the study was to compare these three estimation approaches with regards to their performance in hydrologically variable years in a small headwater catchment in southern Finland. Inter-annual variability of INCA-N and GWLF was compared with me

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Reader, H. E., C. A. Stedmon, and E. S. Kritzberg. "Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments." Biogeosciences 11, no. 12 (June 27, 2014): 3409–19. http://dx.doi.org/10.5194/bg-11-3409-2014.

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Abstract. To examine the potential influence of terrestrially derived DOM on the Baltic Sea, a year-long study of dissolved organic matter (DOM) was performed in three river catchments in Sweden. One catchment drains into the Bothnian Sea, while two southern catchments drain into the Baltic proper. Dissolved organic carbon (DOC) concentrations were positively correlated with discharge from forested catchments over the year. While the overall concentrations of DOC were several times higher in the southern two catchments, higher discharge in the northern catchment resulted in the annual loadings

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Rankinen, Katri, Eila Turtola, Riitta Lemola, Martyn Futter, and José Enrique Cano Bernal. "Nutrient Load Mitigation with Wintertime Cover as Estimated by the INCA Model." Water 13, no. 4 (February 9, 2021): 450. http://dx.doi.org/10.3390/w13040450.

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Increased nutrient loading causes deterioration of receiving surface waters in areas of intensive agriculture. While nitrate and particulate phosphorus load can be efficiently controlled by reducing tillage frequency and increasing vegetation cover, many field studies have shown simultaneously increased loading of bioavailable phosphorus. In the latest phase of the Rural Programme of EU agri-environmental measures, the highest potential to reduce the nutrient loading to receiving waters were the maximum limits for fertilization of arable crops and retaining plant cover on fields with, e.g., no

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Reader, H. E., C. A. Stedmon, and E. S. Kritzberg. "Seasonal contribution of terrestrial organic matter and biological oxygen demand to the Baltic Sea from three contrasting river catchments." Biogeosciences Discussions 11, no. 1 (January 22, 2014): 1355–82. http://dx.doi.org/10.5194/bgd-11-1355-2014.

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Abstract. To examine the potential influence of terrestrially derived DOM on the Baltic Sea, a year-long study of dissolved organic matter (DOM) was performed in three river catchments in Sweden. One catchment drains into the Bothnian Sea, while two southern catchments drain into the Baltic Proper. Dissolved organic carbon (DOC) concentrations were positively correlated with discharge from forested catchments over the year and while the overall concentrations of DOC were several times higher in the southern two catchments, annual loading of DOC was on the same order for all three catchments, d

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Acharya, Sudip. "Land use and land cover changes in the catchments impact the ecosystem in Phewa, Begnas, and Rupa lakes, Nepal." Journal of Nepal Geological Society 60 (September 16, 2020): 195–205. http://dx.doi.org/10.3126/jngs.v60i0.31267.

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Lakes are the environmental and socioeconomic assets of Nepal. In the past few decades, land use and land cover (LULC) change has severely altered the lake ecosystems. The sediment and nutrients loading into the lakes have altered lake ecosystem significantly. This study analyzes the spatiotemporal variations of LULC change and examines its impact on lake environment of Phewa, Begnas and Rupa lakes during 1975–2018 by using Landsat satellite images and data from published literatures. Results showed that from 1975 to 2018, forest cover and agriculture land in catchments of all three lakes has

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Kubiak, Jacek, Sylwia Machula, Dorota Oszkinis, and Dominik Rokicki. "Anthropogenic pressure on the largest lakes of the River Tywa catchment." Limnological Review 17, no. 3 (September 1, 2017): 123–32. http://dx.doi.org/10.1515/limre-2017-0012.

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Abstract The largest lakes of the River Tywa basin i.e. Strzeszowskie, Dołgie, Swobnica and Dłużec (north-west Poland, West Pomeranian Lakeland) were studied in the period 2008–2013, usually in a six week cycle. The aim of the study was to determine the degree of anthropogenic pressure on the lakes. Anthropogenic pressure was assessed against the natural vulnerability of lakes to degradation and the actual rate of eutrophication, with particular consideration of the catchment areas. Catchments of the studied lakes were classified as III class – catchment with moderate possibility of matter sup

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Engstrom, Daniel R. "Influence of Vegetation and Hydrology on the Humus Budgets of Labrador Lakes." Canadian Journal of Fisheries and Aquatic Sciences 44, no. 7 (July 1, 1987): 1306–14. http://dx.doi.org/10.1139/f87-154.

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A mass-balance approach is used to explore the effect of several hydrologic and geographic variables on humic matter concentrations in surface waters of Labrador–Ungava. Water-color measurements from 67 dilute oligotrophic lakes are used to evaluate model predictions of aquatic humus concentration from basin hydrology, catchment vegetation, and internal loss rates. The major trend in water color in the Labrador region — increasing north to south — results from differences in external humus loading from catchment vegetation and soils. Hydrologic influences on aquatic humus concentrations reside

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Kronvang, B., P. Græsbøll, S. E. Larsen, L. M. Svendsen, and H. E. Andersen. "Diffuse nutrient losses in Denmark." Water Science and Technology 33, no. 4-5 (February 1, 1996): 81–88. http://dx.doi.org/10.2166/wst.1996.0491.

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Since 1989, nutrient loading of the Danish aquatic environment has been monitored in 270 Danish streams draining catchment areas differing in climate, physico-geographic and land usage. Diffuse nutrient loading from non-point sources (mainly agricultural) is now the main cause of eutrophication of the Danish aquatic environment; thus in 1993, diffuse sources accounted for 94% of riverine nitrogen loading and 52% of riverine phosphorus loading. Annual riverine total nitrogen (total-N) loading from diffuse sources during the period 1989-93 was on average 10 times greater in 66 small agricultural

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Wang, Kunyang, Shin-ichi Onodera, and Mitsuyo Saito. "Evaluation of nitrogen loading in the last 80 years in an urbanized Asian coastal catchment through the reconstruction of severe contamination period." Environmental Research Letters 17, no. 1 (December 29, 2021): 014010. http://dx.doi.org/10.1088/1748-9326/ac3ced.

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Abstract Most semi-enclosed seas have experienced severe eutrophication owing to high nutrient loading from rivers during rapid population growth periods. In Japan, the coastal areas of some megacities (e.g. Tokyo and Osaka) experienced considerable economic growth during the 1960s–1970s. Therefore, determining the amount of nutrient loading during this period is essential to undertake measures for the conservation of coastal environments. However, determining the nutrient loading that occurred several decades ago is generally difficult owing to lacking water quality records. In this study, th

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Thomas, Z., B. W. Abbott, O. Troccaz, J. Baudry, and G. Pinay. "Proximate and ultimate controls on carbon and nutrient dynamics of small agricultural catchments." Biogeosciences Discussions 12, no. 18 (September 17, 2015): 15337–67. http://dx.doi.org/10.5194/bgd-12-15337-2015.

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Abstract. Direct and indirect effects from agriculture, urbanization, and resource extraction have dramatically increased nutrient loading to aquatic inland and estuarine ecosystems. The capacity of a watershed to remove or retain nutrients is a function of biotic and abiotic conditions across the terrestrial-aquatic gradient including soil, groundwater, riparian zone, and surface water. The goal of this study was to identify proximate and ultimate controls on dissolved organic carbon and nutrient dynamics in small agricultural catchments. We analysed a five-year, high frequency water chemistr

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Più fonti

Tesi sul tema "Catchment loading"

Bossis, Ryan Christopher. "Application of the SWAT Model to Bacterial Loading rates in Kranji Catchment, Singapore." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66825.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2011. Cataloged from PDF version of thesis. Includes bibliographical references (p. 89-92). Despite its tropical climate and abundant rainfall, Singapore is classified as a water scarce country. To protect its limited freshwater resources for both consumption and recreation, Singapore's Public Utilities Board (PUB) has created the Active, Beautiful, and Clean (ABC) campaign. In light of this program, the Massachusetts Institute of Technology (MIT) and Nanyang Technological University

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Lindgren, Georg. "Physical process effects on catchment-scale pollutant transport-attenuation, coastal loading and abatement efficiency." Doctoral thesis, KTH, Mark- och vattenteknik, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3900.

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Pollutants follow various subsurface and surface water pathways from sources within a catchment to its outlet and may cause detrimental effects on downstream water quality and ecosystems. Along their different transport pathways through a catchment, pollutants may be attenuated subject to different physical and biogeochemical processes. In this thesis, physical process effects on such catchment-scale pollutant transport and attenuation, resulting coastal pollutant loading and its efficient abatement are investigated. For this purpose, pollutant transport-attenuation is modeled both generically

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Lindgren, Georg A. "Physical process effects on catchment-scale pollutant transport-attenuation, coastal loading and abatement efficiency /." Stockholm : Department of Land and Water Resources Engineering, Royal Institute of Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3900.

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Wadworth-Watts, Henry David. "A hydrological and nutrient load balance for the Lake Clearwater catchment, Canterbury, New Zealand." Thesis, University of Canterbury. Civil and Natural Resources Engineering, 2013. http://hdl.handle.net/10092/7797.

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The Lake Clearwater catchment, in the Canterbury high country of New Zealand, has a native ecosystem that is adapted to low nutrient conditions. Wetlands in the catchment are identified by the Department of Conservation’s Arawai Kākāriki Wetland Restoration Programme as one of three important endemic wetland types in New Zealand. Uncertainty regarding diffuse nutrient load from agriculture into the lake and wetland ecosystems is limiting effective management of the catchment. This study investigated hydrological processes and nitrogen and phosphorus concentrations to improve knowledge of the s

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Chingombe, Wisemen. "Effects of land-cover - land-use on water quality within the Kuils - Eerste River catchment." Thesis, University of Western Cape, 2012. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_5893_1373463134.

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line-height:150% font-family:&quot Times New Roman&quot ,&quot serif&quot ">The most significant human impacts on the hydrological system are due to land-use change. The conversion of land to agricultural, mining, industrial, or residential uses significantly alters the hydrological characteristics of the land surface and modifies pathways and rates of water flow. If this occurs over large or critical areas of a catchment, it can have significant short and long-term impacts, on the quality of water. While there are methods availa

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Singh, Durgesh Kumar. "Assessment of nutrient loading in lake Ringsjön from the catchment of Hörbyån Creek in Southern Sweden." Thesis, KTH, Mark- och vattenteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171855.

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Lake Ringsjön, located in south of Sweden, has been subject of eutrophication since 1950s and received several restoration efforts. Latest restoration effort, “Project Ringsjön”, was proposed in 2003 to improve lake condition against eutrophication by reducing nutrient concentration. This study was done to assess the nutrient loading into the lake from the catchment of Hörbyån Creek, which is discharging into the lake from southeast. Study addresses the nutrient loading conditions from Hörbyån Creek before and after the implementation of “Project Ringsjön” in 1998 and 2010 respectively. Thus a

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Keogh, Andrew James, of Western Sydney Hawkesbury University, Faculty of Science and Technology, and School of Applied and Environmental Sciences. "Systems management of Glenbrook Lagoon, New South Wales." THESIS_FST_AES_Keogh_A.xml, 1996. http://handle.uws.edu.au:8081/1959.7/423.

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Glenbrook Lagoon, an 8 hectare lake receiving rainfall runoff from a residential catchment, is experiencing nutrient enrichment problems expressed as excessive aquatic plant presence. This study aims to assess the relative nutrient contribution of the total system compartments, including catchment loading, water column, aquatic plants and surface sediment. This information is utilised in the formulation of management strategies which may produce a sustainable nutrient reduction and general improvement in the system. The total nutrient content of the aquatic system was determined to be high in

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Ayuk, James Ayuk. "Modelling of nonpoint source pollution in the Kuils River Catchment, Western Cape - South Africa." Thesis, University of the Western Cape, 2008. http://hdl.handle.net/11394/3131.

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Jaafar, Noraini. "Process-based modelling of river flow and nitrate loadings in the Ythan catchment, Scotland." Thesis, University of Stirling, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244702.

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Spooner, Daniel Ron, and n/a. "Nutrient, organic carbon and suspended solid loadings in two ICOLLs, NSW Australia : biogeochemical responses." University of Canberra. Resource, Environmental & Heritage Sciences, 2005. http://erl.canberra.edu.au./public/adt-AUC20070129.130745.

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Intermittently Closed and Open Lake Lagoons (ICOLLs) are very common along the southern NSW coastline. Expanding urban populations are expanding and these systems are under increasing pressure from anthropogenic activities that change landscape processes and significantly alter the amounts of organic and inorganic constituents entering their waters. Once efficient cycling of nutrients in ICOLLs is overcome, the symptoms of eutrophication establish and the entire ecosystem suffers. These systems have great ecological, social, and economic values that require insightful, well balanced, and educa

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Capitoli di libri sul tema "Catchment loading"

Chow, Ming Fai, and Zulkifli Yusop. "Contributions of Dry and Wet Weather Runoffs to Annual Pollutant Loading in Tropical Urban Catchments." In GCEC 2017, 1511–21. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8016-6_109.

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Packham, Ian, Eva Mockler, and Michael Bruen. "Development of a Catchment Management Tool to Assess Environmental Risk from Nutrient Loadings Using Open Source GIS." In IFIP Advances in Information and Communication Technology, 262–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-41151-9_25.

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Atti di convegni sul tema "Catchment loading"

Domnin, Dmitry, Dmitry Domnin, Boris Chubarenko, Boris Chubarenko, Rene Capell, and Rene Capell. "MATHEMATICAL MODELING OF NUTRIENT LOADING FROM SMALL CATCHMENTS OF THE VISTULA LAGOON." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b93dfde6248.02952871.

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Vistula Lagoon as a part of the coastal zone translates nutrient load from catchment to the Baltic Sea. Catchments of the Primorskaya River (small settlements, mostly agricultural area, 120 km2) and Banówka-Mamonovka River (transboundary catchment between Russia and Poland, relatively big settlements, food production enterprises, agricultural activity, 490 km2) were selected as test ones for the Vistula Lagoon catchment (23 870 km2). Assessment of the retention of total nitrogen and phosphorus in the catchment and the transformation of nutrient load from anthropogenic sources while passing the

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Gorbunova, Julia, Julia Gorbunova, Boris Chubarenko, Boris Chubarenko, Dmitry Domnin, Dmitry Domnin, Jens Christian Refsgaard, and Jens Christian Refsgaard. "ASSESSMENT OF NUTRIENT LOAD ON THE PREGOLYA RIVER BASIN (VISTULA LAGOON CATCHMENT) FROM THE ANTHROPOGENIC SOURCES." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b94681d1a25.68574351.

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The catchment area of the Pregolya River is about 65% of the Vistula Lagoon drainage basin and occupied by Russia and Poland in approximately equal proportions. Nutrient load from the catchment largely controls the eutrophication processes of the lagoon ecosystem. Open statistical data (2011-2014) were used for evaluating the nutrient loads. At present, the nutrient load from the major anthropogenic sources (population, livestock, poultry and crop production) is 53,267 tons N/year and 16,424 tons P/year in the Pregolya River catchment. This results in loads of 23,032 tons N/year and 2,819 tons

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Ferris, Gerry, Patrick Grover, and Aron Zahradka. "Real Time Rainfall Monitoring for Pipeline Geohazards." In ASME-ARPEL 2021 International Pipeline Geotechnical Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/ipg2021-63162.

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Abstract Oil and gas pipelines are subjected to multiple types of geohazards which cause pipeline failures (loss of containment); two of the most common types occur at watercourse crossings and at landslides. At watercourse crossings, the most common geohazard which causes pipeline failures is flooding during which excessive scour may result in the exposure of the buried pipeline and if the exposure results in a free spanning pipeline, then this may fail due to fatigue caused by cyclic loading from vortex-induced vibration. Fortunately the free span length and water velocity combinations that

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"Modelling the runoff, nutrient and sediment loadings in the Torrens river catchment, South Australia using SWAT." In 22nd International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand (MSSANZ), Inc., 2017. http://dx.doi.org/10.36334/modsim.2017.l23.nguyen.

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Rapporti di organizzazioni sul tema "Catchment loading"

Desiderati, Christopher. Carli Creek Regional Water Quality Project: Assessing Water Quality Improvement at an Urban Stormwater Constructed Wetland. Portland State University, 2022. http://dx.doi.org/10.15760/mem.78.

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Stormwater management is an ongoing challenge in the United States and the world at-large. As state and municipal agencies grapple with conflicting interests like encouraging land development, complying with permits to control stormwater discharges, “urban stream syndrome” effects, and charges to steward natural resources for the long-term, some agencies may turn to constructed wetlands (CWs) as aesthetically pleasing and functional natural analogs for attenuating pollution delivered by stormwater runoff to rivers and streams. Constructed wetlands retain pollutants via common physical, physico

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