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Journal articles on the topic 'Percentage cover'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Zikri, Muhammad, and Reki Kardiman. "Struktur Tegakan dan Tutupan Kanopi Ekosistem Hutan dan Parak di Kecamatan Lubuk Kilangan Kota Padang." Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa 2, no. 4 (2024): 01–16. http://dx.doi.org/10.62383/algoritma.v2i4.66.

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This study aimed to determine the stand structure and tree canopy cover in forest and parak ecosystems in Lubuk Kilangan District, Padang City. This is a descriptive research with a direct observation throught purposive random sampling method. Data were collected by making six of 20 x 20 m plots in each primary forest and parak ecosystem. Tree diameters ≥10 cm were measured in each plot and canopy cover were collected using the Hemispherical Photography method using a mobile phone front camera equipped with a fish-eye lens. Data were analyzed in terms of stand density, basal area, Stand Basal

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Abdelmoneim, Karamalla Gaiballa, and Mirghani Mohamed Ali Osman. "Seagrass Species Composition and Distribution in Coastal Water of the Red Sea in the Sudan." International Journal of Novel Research in Life Sciences 10, no. 4 (2023): 52–60. https://doi.org/10.5281/zenodo.8300433.

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<strong>Abstract:</strong> Seagrasses are distinctive angiosperm marine plants that grow submerged in the seawater. They are one of the important marine ecosystems components that stabilize the marine and coastal environment. During the investigation seagrass species composition, percentage cover and distribution, besides some water characteristics such as temperature, salinity, transparency and hydrogen ion concentration (pH) were examined at eleven sites of Sudanese Red Sea coastal area. The seagrasses were sampled using the permanent line transects and quadrates. Analysis of variance (ANOVA

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Miura, Satoru, Shin Ugawa, Shuichiro Yoshinaga, and Tsuyoshi Yamada Keizo Hirai. "Floor Cover Percentage Determines Splash Erosion inChamaecyparis obtusaForests." Soil Science Society of America Journal 79, no. 6 (2015): 1782–91. http://dx.doi.org/10.2136/sssaj2015.05.0171.

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4

Shelton, David P., Mark A. Schroeder, Stephen D. Kachman, James A. Gosey, and Paul J. Jasa. "Cattle grazing influences on percentage corn residue cover." Journal of Soil and Water Conservation 52, no. 3 (1997): 203–6. https://doi.org/10.1080/00224561.1997.12457151.

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5

Mallombasi, Andi, Supriadi Mashoreng, and Yayu A. La Nafie. "THE RELATIONSHIP BETWEEN SEAGRASS Thalassia hemprichii PERCENTAGE COVER AND THEIR BIOMASS." Jurnal Ilmu Kelautan SPERMONDE 6, no. 1 (2020): 7. http://dx.doi.org/10.20956/jiks.v6i1.9922.

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Seagrass has many functions and values, including as carbon sink. However, to estimate carbon in seagrass, it involves seagrass biomass harvesting which is laborious, costly, and destructive. This study aimed to find out the relationship between seagrass Thalassia hemprichii percent cover with their biomass which will provide alternative method for biomass estimation leading to an efficient, less cost and less destructive method for seagrass carbon stock estimation. Seagrass were sampled in Bonebatang island, South Sulawesi, and estimated their percent cover following SeagrassWatch Method from

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6

Tinambunan, Shintani Asri, Nyoman Dati Pertami, and Ni Made Ernawati. "Percentage of Mangrove Canopy Cover and Mollusks Abundance in Benoa Bay Mangrove Ecosystem." Advances in Tropical Biodiversity and Environmental Sciences 5, no. 3 (2021): 105. http://dx.doi.org/10.24843/atbes.2021.v05.i03.p05.

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This research was conducted to determine the condition of the mangrove ecosystem based on its canopy cover and to determine the types of mollusks (Bivalves and Gastropods) associated with the Benoa Bay mangrove ecosystem. Hemispherical photography is a method for observing mangrove canopy cover and line transect method for mollusks. The composition of mangrove species found in the research location were five species, namely Rhizophora stylosa, Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorrhiza, and Avicennia marina. The percentage of mangrove canopy cover in the Benoa Bay mangro

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Prasetya, Johan Danu, and Dian Hudawan Santoso. "Comparative Study of Point Intercept Transect (PIT) Method and Underwater Photo Transect (UPT) to Calculate Hard Coral Cover Percentage." Jurnal Ilmiah Perikanan dan Kelautan 14, no. 2 (2022): 404–10. http://dx.doi.org/10.20473/jipk.v14i2.32393.

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Highlight ResearchPoint Intercept Transect Method (PIT) and Underwater Photo Transect (UPT) to monitor coral cover was comparedPercentage of hard coral cover was analyzedThe average difference of the percentage of hard coral cover obtained from the PIT and UPT was analyzed AbstractCoral reef ecosystems are vulnerable to damage and extinction. Therefore, it is imperative that, as part of conservation, their conditions are monitored using straight forward or easy-to-use methods. The research was intended to compare the effectiveness of using Point Intercept Transect (PIT) and Underwater Photo Tr

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8

Yang, Chen, Meichen Fu, Dingrao Feng, Yiyu Sun, and Guohui Zhai. "Spatiotemporal Changes in Vegetation Cover and Its Influencing Factors in the Loess Plateau of China Based on the Geographically Weighted Regression Model." Forests 12, no. 6 (2021): 673. http://dx.doi.org/10.3390/f12060673.

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Vegetation plays a key role in ecosystem regulation and influences our capacity for sustainable development. Global vegetation cover has changed dramatically over the past decades in response to both natural and anthropogenic factors; therefore, it is necessary to analyze the spatiotemporal changes in vegetation cover and its influencing factors. Moreover, ecological engineering projects, such as the “Grain for Green” project implemented in 1999, have been introduced to improve the ecological environment by enhancing forest coverage. In our study, we analyzed the changes in vegetation cover ac

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9

Innes, John L. "The Use of Percentage Cover Measurements in Lichenometric Dating." Arctic and Alpine Research 18, no. 2 (1986): 209. http://dx.doi.org/10.2307/1551131.

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10

Innes, John L. "The Use of Percentage Cover Measurements in Lichenometric Dating." Arctic and Alpine Research 18, no. 2 (1986): 209–16. http://dx.doi.org/10.1080/00040851.1986.12004079.

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11

DYMOND, J. R., P. R. STEPHENS, P. F. NEWSOME, and R. H. WILDE. "Percentage vegetation cover of a degrading rangeland from SPOT." International Journal of Remote Sensing 13, no. 11 (1992): 1999–2007. http://dx.doi.org/10.1080/01431169208904248.

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12

Walker, D. W., and W. M. Randle. "Influence of Row Covers, Mulch, and Bedding Dates on Early Production of Sweet Potato Transplants." HortScience 21, no. 6 (1986): 1354–56. http://dx.doi.org/10.21273/hortsci.21.6.1354.

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Abstract Sweet potato [Ipomoea batatas (L.) Lam.] cv. Travis storage roots were bedded on 8 and 27 Mar. 1985 according to standard cultural practices. The following row cover and mulch treatments were tested for their effects on early transplant production: a) bare soil (control); b) black polyethylene mulch; c) nonwoven polyester row cover; d) slitted, clear polyethylene row cover; or e) slitted, white polyethylene row cover. All row cover and mulch treatments increased soil temperature (at a 5-cm depth) relative to the bare soil. Compared to black polyethylene mulch, slitted, clear polyethyl

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13

Mulyadi, Mulyadi. "ANALISIS SUMBER-SUMBER AIR PADA DAERAH ALIRAN SUNGAI (DAS) KARAJAE DALAM MENUNJANG KETERSEDIAN AIR BAKU KOTA PARE-PARE." AGROTEK: Jurnal Ilmiah Ilmu Pertanian 3, no. 2 (2020): 143–55. http://dx.doi.org/10.33096/agrotek.v3i2.81.

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This study aims to (1) Determine land cover in the Karajae watershed area. (2) Identifying the Location of Water Sources through Soil Analysis of Water Assessment Tools (SWAT). (3) Make a map describing the unit of land available and the location of the water source in the Karajae watershed. This research was conduct in the Karajae Watershed from July to September 2017. Primary data is obtained directly through the interpretation of satellite imagery to make land cover maps. Retrieval of data on land cover in the field doing by adjusting the classification of land cover in the field with the r

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14

McLaren, Kurt, Jasmine Sedman, Karen McIntyre, and Kurt Prospere. "Long-Term Spatial Pattern Predictors (Historically Low Rainfall, Benthic Topography, and Hurricanes) of Seagrass Cover Change (1984 to 2021) in a Jamaican Marine Protected Area." Remote Sensing 16, no. 7 (2024): 1247. http://dx.doi.org/10.3390/rs16071247.

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Climate change and other anthropogenic factors have caused a significant decline in seagrass cover globally. Identifying the specific causes of this decline is paramount if they are to be addressed. Consequently, we identified the causes of long-term change in seagrass/submerged aquatic vegetation (SAV) percentage cover and extent in a marine protected area on Jamaica’s southern coast. Two random forest regression (RFr) models were built using 2013 hydroacoustic survey SAV percentage cover data (dependent variable), and auxiliary and 2013 Landsat 7 and 8 reflectance data as the predictors. The

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15

Carpenter, Stephen, Val Byfield, Stacey L. Felgate, et al. "Using Unoccupied Aerial Vehicles (UAVs) to Map Seagrass Cover from Sentinel-2 Imagery." Remote Sensing 14, no. 3 (2022): 477. http://dx.doi.org/10.3390/rs14030477.

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Seagrass habitats are ecologically valuable and play an important role in sequestering and storing carbon. There is, thus, a need to estimate seagrass percentage cover in diverse environments in support of climate change mitigation, marine spatial planning and coastal zone management. In situ approaches are accurate but time-consuming, expensive and may not represent the larger spatial units collected by satellite imaging. Hence, there is a need for a consistent methodology that uses accurate point-based field surveys to deliver high-quality mapping of percentage seagrass cover at large spatia

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Suhaika, Nada Qitriyyah, Renata Martanto, Muhammad Azriel, et al. "Condition of coral cover area in the northern region of Tidung Kecil Island, Thousand Islands." Biological Environment and Pollution 3, no. 1 (2023): 25–31. http://dx.doi.org/10.31763/bioenvipo.v3i1.629.

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This study aims to determine the condition of the coral reef ecosystem on Tidung Kecil Island, Seribu Islands. Observational data collection was carried out in June 2022. The method used in this study was descriptive with the Line Interval Transect (LIT) technique with two repetitions, with the distance between the transect points being 10 meters. 2 repetitions aim to represent the coral cover data on the island's northern part. The data taken are the length and type of coral reef growth, which is then processed to be included in the coral cover area formula. Observational data were then analy

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17

Kobayashi, Toshiyuki, Javzandulam Tsend-Ayush, and Ryutaro Tateishi. "A new global tree-cover percentage map using MODIS data." International Journal of Remote Sensing 37, no. 4 (2016): 969–92. http://dx.doi.org/10.1080/01431161.2016.1142684.

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18

Listiawati, Vina, Siti Naily Rohmah, and Dheny Choirul Alfan. "The Percentage of Epiphytes Cover on The Seagrass Beds in Sepanjang Beach, Indonesia." Bioeksperimen: Jurnal Penelitian Biologi 4, no. 2 (2018): 71–74. http://dx.doi.org/10.23917/bioeksperimen.v4i2.6889.

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Seagrasses are foundation plant species as they not only create their own habitat but also for other marine organisms. In estuarine and marine environments, they form beds and their leafy structure are the excellent substrate for the epiphytes. In this study, we aimed to investigate the percentage cover of epiphytes on the seagrass beds in Sepanjang Beach, Indonesia. 5 transect lines with 20 m in length with the 50 x 50 cm quadrat at the interval of 5 m were placed at the perpendicular angle to the shoreline. These transects were positioned from the furthermost of the western part to the middl

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19

Rahmita, Raja, Efriyeldi Efriyeldi, and Thamrin Thamrin. "Hubungan kondisi tutupan karang dengan kepadatan megabentos di Pulau Pandan Provinsi Sumatera Barat." Jurnal Zona 6, no. 1 (2022): 28–37. http://dx.doi.org/10.52364/zona.v6i1.52.

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This research was conducted in February 2021 in the waters of Pandan Island, West Sumatra Province. This study aims to determine the relationship between coral cover and the density of megabenthos found in the Pandan Island area. The method used in this study is a survey method. Coral cover data was collected using the LIT (Line Intercept Transect) method and megabenthos data was collected using the Benthos Belt Transect method. The results showed that Pandan Island had a good percentage of coral cover. The highest density of megabenthos was trokha snails found at each station, while the lowes

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20

Parui, Arpan Kumar, Soumik Chatterjee, and Parthiba Basu. "Habitat characteristics shaping ant species assemblages in a mixed deciduous forest in Eastern India." Journal of Tropical Ecology 31, no. 3 (2015): 267–80. http://dx.doi.org/10.1017/s0266467415000036.

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Abstract:Environmental complexity and spatial heterogeneity are important factors influencing the structure of ant species assemblages. This paper documents the effect of different vegetation and environmental factors on ant community structure and functional group composition in different habitat patches. Ants were sampled at 16 sites distributed across five habitat types in the Kuldiha Wildlife Sanctuary. Sampling was performed 10 times over a 2-y period using pitfall traps. A total of 100 species belonging to 41 genera were collected during the study. Ant species richness was best explained

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Lisdayanti, Eka, Nurul Najmi, and Muktaridha Muktaridha. "Seagrass Meadow Condition Assessment: A Case Study of Seagrass Meadows in Pulau Banyak District, Aceh Singkil." Jurnal Biologi Tropis 24, no. 4 (2024): 828–34. https://doi.org/10.29303/jbt.v24i4.7744.

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Seagrass beds are one of the coastal ecosystems that have an important role in maintaining the balance of the marine environment. Indonesia is known for its rich seagrass species but not much has been reported, especially in Aceh waters.This study aims to identify and analyse the distribution and condition of seagrass health through the percentage cover and dominance of seagrass species in Pulau Banyak District, Aceh Singkil Regency. Seagrass research was conducted in July 2024 at 3 different stations, namely Nago, Matahari and Panjang Islands. The research method used was the method of drawin

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22

Aditya, Rendy Bayu, and Muhammad Ulul Lizamun Ningam. "Assessing City Greenness using Tree Canopy Cover: The Case of Yogyakarta, Indonesia." GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY 14, no. 1 (2021): 71–80. http://dx.doi.org/10.24057/10.24057/2071-9388-2020-196.

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The study aims to measure the greenness of an Indonesia city using tree canopy cover data. Rapid physical development brings impacts to the loss of urban trees, which leads to the increase of flooding risk, local temperature and pollution level. To address the issues, a baseline assessment of urban tree canopy existence is necessary as inputs for effective urban environmental management policies. The methods used in this research include 1) remote sensing and spatial analysis, and 2) simple quantitative analysis. Furthermore, three indicators are used in assessing the greenness, including 1) s

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Aditya, Rendy Bayu, and Muhammad Ulul Lizamun Ningam. "Assessing City Greenness using Tree Canopy Cover: The Case of Yogyakarta, Indonesia." GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY 14, no. 1 (2021): 71–80. http://dx.doi.org/10.24057/2071-9388-2020-212.

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The study aims to measure the greenness of an Indonesia city using tree canopy cover data. Rapid physical development brings impacts to the loss of urban trees, which leads to the increase of flooding risk, local temperature and pollution level. To address the issues, a baseline assessment of urban tree canopy existence is necessary as inputs for effective urban environmental management policies. The methods used in this research include 1) remote sensing and spatial analysis, and 2) simple quantitative analysis. Furthermore, three indicators are used in assessing the greenness, including 1) s

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Aditya, Rendy Bayu, and Muhammad Ulul Lizamun Ningam. "Assessing City Greenness using Tree Canopy Cover: The Case of Yogyakarta, Indonesia." GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY 14, no. 1 (2021): 71–80. http://dx.doi.org/10.24057/2071-9388-2020-196.

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The study aims to measure the greenness of an Indonesia city using tree canopy cover data. Rapid physical development brings impacts to the loss of urban trees, which leads to the increase of flooding risk, local temperature and pollution level. To address the issues, a baseline assessment of urban tree canopy existence is necessary as inputs for effective urban environmental management policies. The methods used in this research include 1) remote sensing and spatial analysis, and 2) simple quantitative analysis. Furthermore, three indicators are used in assessing the greenness, including 1) s

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Tian, Yuan, Qiuliang Zhang, Xuan Liu, Meng Meng, and Bing Wang. "The Relationship between Stem Diameter Shrinkage and Tree Bole Moisture Loss Due to Transpiration." Forests 10, no. 3 (2019): 290. http://dx.doi.org/10.3390/f10030290.

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The responsiveness of four types of stem diameter shrinkage indicators to sap flow changes was compared under four air temperature and cloudiness conditions: above 0 °C below 80% cloud cover days; above 0 °C large percentage cloud cover days; low temperature below 80% cloud cover days; and low temperature large percentage cloud cover days. In this study, we investigated the effects of indicative functions of relatively easy-to-access stem diameter shrinkage on variation characteristics of sap flow. High-resolution-based stem diameter shrinkage is related to changes in tree moisture content. St

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Akinrinwoye, Caroline O., Yaw A. Twumasi, Zhu H. Ning, John B. Namwamba, and Judith Oppong. "Modeling Rainfall with Respect to Land Cover and Population in the Niger Delta Area Nigeria for the Period 1990-2040." American Journal of Environment and Climate 2, no. 3 (2023): 01–14. http://dx.doi.org/10.54536/ajec.v2i3.1898.

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Anthropogenic activities including oil exploration have led to environmental issues in the Niger Delta, Nigeria over the years, leading to the deterioration of aquatic and riparian ecosystems. This has affected health, fishing, subsistence farming, and the economy of residents of this region. The objectives of this study were to model rainfall with respect to the percentage land cover type and forecast the percentage land cover type in 2040 for the river Niger-Delta. The objectives were met by reviewing literature related to this study, data acquisition, and modeling. The data was accessed fro

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Samsuri, A. Zaitunah, AG Ahmad, and I. Pasaribu. "Lands Cover Dynamics of Siais Lake Catchment Area, Tapanuli Selatan District, Indonesia." IOP Conference Series: Earth and Environmental Science 1116, no. 1 (2022): 012084. http://dx.doi.org/10.1088/1755-1315/1116/1/012084.

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Abstract The Siais Lake Catchment Area (SLCA) is a water resource that includes various types of land cover and land use in Rianiate village, Angkola Sangkunur sub-district, and Tapanuli Selatan district. The SLCA lake catchment area has altered the land cover and increased the surface area of Siais Lake. The purpose of this study was to determine the type of land cover that changed in the Siais lake catchment area between 1990 and 2018. The land cover classification was obtained using Landsat 5 and Landsat 8 OLI images. Make use of supervised classification. Forest, plantation, bare land, pad

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28

Ribeiro, Eduardo Castro, Daniel Fonseca de Carvalho, Lucas Antonio de Freitas Santos, and José Guilherme Marinho Guerra. "Onion yield under agroecological farming system using distinct irrigation depths and soil covers." Ciência Rural 46, no. 5 (2016): 783–89. http://dx.doi.org/10.1590/0103-8478cr20150342.

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ABSTRACT: The present study was carried out in order to evaluate the effects of irrigation depths applied through drip and presence/absence of soil cover in onion yield, under agroecological farming. The experiment was conducted in Seropédica, RJ, Brazil, from May to September 2012. The experimental design was a randomized complete block with split-plot design with 10 treatments and 7 replications, characterized by the presence (+S) and absence (-S) of soil cover and five irrigation depths according to percentages of the crop evapotranspiration (ETc): 0, 22, 45, 75 and 100% (0, 155, 220.6, 320

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Cetin, Oner, Demet Uygan, and Hasan Boyaci. "Tomato irrigation scheduling improved by using percent canopy cover and crop developmental stage." Australian Journal of Agricultural Research 59, no. 12 (2008): 1113. http://dx.doi.org/10.1071/ar08110.

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The aim of this study was to evaluate whether it is possible to conserve water and improve yield using canopy cover in order to adjust the amount of water needed for drip-irrigated tomatoes. The experiments were carried out using field-grown tomatoes (Lycopercion esculentum cv. Dual Large, F1) in Central Anatolia, Turkey from 2003 to 2005. The experimental design used split-plots in randomised blocks with 3 replications. The main plots in this study were: I1, constant Class A pan evaporation (Ep) (i.e. K = 1.0) throughout the irrigation season; I2, varying Ep proportion according to crop devel

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Mascarinas, Honey Jane, and B. Otadoy Julie. "Seagrass Diversity and Distribution in Maribojoc Bay, Bohol, Philippines." American Journal of Environment and Climate 1, no. 1 (2022): 12–19. https://doi.org/10.54536/ajec.v1i1.217.

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Seagrasses are major parts of coastal and marine biodiversity. Unfortunately, these aquatic plants and their ecological values are virtually unknown to many Filipinos. This study assessed the seagrasses in Maribojoc Bay, particularly in the coastal areas of the three municipalities, namely Maribojoc, Dauis, Panglao, and the City of Tagbilaran. Ecological assessments were conducted to determine the composition, abundance, distribution, percent cover, diversity, dominance, and evenness of seagrass species. Eight sampling sites were surveyed from October to December 2020. Seven seagrass species w

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Irawan, Bambang, A. Hadian Pratama Hamzah, and Subekti Nurmawati. "Efisiensi Penurunan Parameter BOD, TSS, Minyak dan Lemak pada Limbah Greywater dengan Ecotech Garden Menggunakan Tanaman Melati Air (Echinodorus Palaefolius)." Jurnal Ilmiah Universitas Batanghari Jambi 24, no. 3 (2024): 2357. http://dx.doi.org/10.33087/jiubj.v24i3.5493.

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This study aims to analyze the efficiency of reducing BOD, TSS, oil and fat parameters in graywater waste, explaining the optimal residence time and percentage of plant cover needed in graywater waste treatment, designing a graywater waste treatment design model with Ecotech Garden using water jasmine plants (Echinodorus palaefolius) on a household scale. This research was conducted using a Randomized Complete Block Design conducted as many as 3 (three) replications. Factor 1 (treatment) measured is the residence time of 0.5 days, 1 day, 2 days, 3 days and factor 2 (group) is the percentage of

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Zhao, Kaiguang, Sorin Popescu, and Ross Nelson. "Quantifying Variances of Line-Intercept-Sampling Estimators of Percentage Cover(Silvilaser)." Journal of Forest Planning 13, Special_Issue (2008): 195–204. http://dx.doi.org/10.20659/jfp.13.special_issue_195.

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Pforte, Florian, Birgit Wilhelm, and Oliver Hensel. "Evaluation of an online approach for determination of percentage residue cover." Biosystems Engineering 112, no. 2 (2012): 121–29. http://dx.doi.org/10.1016/j.biosystemseng.2012.03.005.

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Sunde, Michael G., David D. Diamond, Lee F. Elliott, Phillip Hanberry, and Diane True. "Mapping high-resolution percentage canopy cover using a multi-sensor approach." Remote Sensing of Environment 242 (June 2020): 111748. http://dx.doi.org/10.1016/j.rse.2020.111748.

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Lakhani, K. H., and B. N. K. Davis. "Transforming the Response in Experiments Based on Percentage Cover of Vegetation." Journal of Environmental Management 40, no. 4 (1994): 301–7. http://dx.doi.org/10.1006/jema.1994.1023.

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Seutloali, K. E., and H. R. Beckedahl. "Assessing the determinants of rill erosion on roadcuts in the south eastern region of South Africa." Solid Earth Discussions 7, no. 1 (2015): 393–417. http://dx.doi.org/10.5194/sed-7-393-2015.

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Abstract. Erosion on roadcuts is a concern due to potential to cause environmental degradation which has significant economic costs. It is therefore critical to understand the relationship between roadcut characteristics and soil erosion for designing roadcuts that are less vulnerable to erosion and to help road rehabilitation works. This study investigated the characteristics (i.e. gradient, length and percentage of vegetation cover) of degraded (i.e. with rills) and non-degraded roadcuts (i.e. without rills) and explored the relationship of the roadcut characteristics with the dimensions (wi

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Seutloali, K. E., and H. R. Beckedahl. "Understanding the factors influencing rill erosion on roadcuts in the south eastern region of South Africa." Solid Earth 6, no. 2 (2015): 633–41. http://dx.doi.org/10.5194/se-6-633-2015.

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Abstract. Erosion on roadcuts is a concern due to the potential of causing environmental degradation, which has significant economic costs. It is therefore critical to understand the relationship between roadcut characteristics and soil erosion for designing roadcuts that are less vulnerable to erosion and to help road rehabilitation works. This study investigated the characteristics (i.e. gradient, length, percentage of vegetation cover and soil texture) of degraded (i.e. with rills) and non-degraded roadcuts (i.e. without rills) and explored the relationship of the roadcut characteristics wi

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Wyenandt, Christian A., Landon H. Rhodes, Mark A. Bennett, and Richard M. Riedel. "Control of Fruit Rots of Processing Tomato Using Cover Crop Mulch and Tom-Cast." HortTechnology 19, no. 3 (2009): 511–17. http://dx.doi.org/10.21273/hortsci.19.3.511.

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The effects of three bed systems [conventional (bare soil), chemically killed, or mechanically killed winter rye (Secale cereale) + hairy vetch (Vicia villosa) cover crop mulch] and five fungicide programs (no fungicide, 7-day fungicide application program, and Tom-Cast-timed fungicide applications at 15, 18, or 25 disease severity values) on marketable yield and soil-borne fungal fruit rot development in processing tomato (Solanum lycopersicum) production were studied. In 1997, marketable yield was higher in both cover crop systems compared with the conventional bed system. In 1997, percentag

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Wyenandt, Christian A., Landon H. Rhodes, Mark A. Bennett, and Richard M. Riedel. "Control of Fruit Rots of Processing Tomato Using Cover Crop Mulch and Tom-Cast." HortTechnology 19, no. 3 (2009): 511–17. http://dx.doi.org/10.21273/horttech.19.3.511.

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The effects of three bed systems [conventional (bare soil), chemically killed, or mechanically killed winter rye (Secale cereale) + hairy vetch (Vicia villosa) cover crop mulch] and five fungicide programs (no fungicide, 7-day fungicide application program, and Tom-Cast-timed fungicide applications at 15, 18, or 25 disease severity values) on marketable yield and soil-borne fungal fruit rot development in processing tomato (Solanum lycopersicum) production were studied. In 1997, marketable yield was higher in both cover crop systems compared with the conventional bed system. In 1997, percentag

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Tuti H., M. I. Yosephine. "CONDITION AND SPATIAL DISTRIBUTION OF STONY CORAL IN BUNGURAN, SOUTHWEST NATUNA ISLANDS, INDONESIA." Marine Research in Indonesia 37, no. 1 (2015): 25–34. http://dx.doi.org/10.14203/mri.v37i1.32.

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Bunguran waters is part of Natuna waters consisting of several small islands located in the southern part of South China Sea, between Sumatera and Kalimantan Island. This paper reported results of a study on spatial distribution and condition of coral reefs and other biota in Bunguran waters,i.e. percentage cover and diversity of coral species. The observation was conducted using line intercept transect (LIT) on eight stations distributed in Salor Island, Sedanau Island, Komang Island, Kumbik Island, Depeh Strait, Sabangmawang Island, Pulau Tiga Village and Tekolampak Cape. The results showed

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Fahma, Ilma, and Febriandi Febriandi. "Analisis Potensi Kawasan Pengembangan Lahan Pertanian Tanaman Padi Sawah di Kabupaten Tanah Datar." Al-DYAS 4, no. 1 (2024): 1–13. http://dx.doi.org/10.58578/aldyas.v4i1.4071.

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This study aims to determine 1) the level of suitability of wet-rice land on food agricultural land in Tanah Datar Regency, 2) existing land cover in Tanah Datar Regency and 3) potential wet-rice land development areas in Tanah Datar Regency. The method used is a descriptive approach with quantitative research. Data was processed using fuzzy logic, supervised classification, and spatial data analysis. The results of this study show 1) Tanah Datar Regency has 3 levels of land suitability with an index value of 0-0.59 which is classified at the level of unsuitable to less suitable for rice paddy

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Journal, Baghdad Science. "Seasonal Study for Habitat of Myriophyllum spicatum L. in Al-Burgga Marsh, Hor Al-Hammar, Southern Iraq." Baghdad Science Journal 11, no. 3 (2014): 1145–54. http://dx.doi.org/10.21123/bsj.11.3.1145-1154.

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Myriophyllum spicatum distribution in Al-Burgga marsh, Hor Al-Hammar was described in relation to some of the physical-chemical properties for its habitat (water depth, light penetration, water temperature, water salinity, pH, dissolved oxygen, Ca+2, Mg+2, reactive NO2=, reactive NO3-1, and reactive PO4-3) during 2011, seasonally. CANOCO ordination program (CCA) was used to analyse the data. Its vegetation cover percentage was with its peak at summer, its value was 90 %, while the lowest value was 20 % in winter. Statistically, Positive relationships for WT, sal., Ca+2, Mg+2, reactive NO2=, re

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Al-Kenzawi, Mohammed A. H. "Seasonal Study for Habitat of Myriophyllum spicatum L. in Al-Burgga Marsh, Hor Al-Hammar, Southern Iraq." Baghdad Science Journal 11, no. 3 (2014): 1145–54. http://dx.doi.org/10.21123/bsj.2014.11.3.1145-1154.

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Myriophyllum spicatum distribution in Al-Burgga marsh, Hor Al-Hammar was described in relation to some of the physical-chemical properties for its habitat (water depth, light penetration, water temperature, water salinity, pH, dissolved oxygen, Ca+2, Mg+2, reactive NO2=, reactive NO3-1, and reactive PO4-3) during 2011, seasonally. CANOCO ordination program (CCA) was used to analyse the data. Its vegetation cover percentage was with its peak at summer, its value was 90 %, while the lowest value was 20 % in winter. Statistically, Positive relationships for WT, sal., Ca+2, Mg+2, reactive NO2=, re

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Hawati, Hawati, Mustafa Mustafa, Yusuf Yusuf, Angkasa Putra, and Herianto Suriadin. "Study of Coral Reefs in the Tourism Zone of Hoga Island, Wakatobi National Park, Southeast Sulawesi, Indonesia." Journal La Lifesci 5, no. 1 (2024): 27–36. http://dx.doi.org/10.37899/journallalifesci.v5i1.905.

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One of the ecosystems in tropical waters is the coral reef. Coral reefs serve multiple functions, both ecologically and economically. The marine waters in Wakatobi Regency boast diverse coral reefs, and this study aims to assess the coral reefs in one of its regions, specifically in the waters around Hoga Island, part of Wakatobi National Park. The research was conducted from March to May 2023, involving direct observations at the research site. The collected data were then analyzed and presented descriptively concerning the percentage of coral reefs in the study area. The percentage of coral

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Parenden, D., J. Jompa, and C. Rani. "Condition of Hard Corals and Quality of The Turbid Waters in Spermonde Islands (Case Studies in Kayangan Island, Samalona Island and Kodingareng Keke Island)." IOP Conference Series: Earth and Environmental Science 921, no. 1 (2021): 012060. http://dx.doi.org/10.1088/1755-1315/921/1/012060.

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Abstract Coral reefs in Spermonde waters have experienced degradation as a result of the increasing turbidity in these waters. This research was conducted on Kayangan Island, Samalona Island and Kodingareng Keke Island, Spermonde Islands, Makassar City. The purpose of this study was to determine the percentage of coral cover, types and the how much the turbidity of the waters influence the coral. The researcher measured the coral cover using Underwater Photo Transect and processed the data using CPCe software. The levels of turbidity were taken at three locations and examined in the laboratory

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Cattaneo, Antonella, and Lucie Fortin. "Moss distribution in streams of the Quebec Laurentian Mountains." Canadian Journal of Botany 78, no. 6 (2000): 748–52. http://dx.doi.org/10.1139/b00-050.

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To model the distribution of aquatic mosses, we measured their cover in 33 Quebec streams. The variation in moss cover among streams was explained mostly (42%) by substratum size (percentage >25 cm in diameter). Water pH and depth also explained a significant amount of variation (9 and 10%, respectively). Within a stream, moss cover was again positively correlated to the availability of large substrata and negatively to water depth. There was a strong inverse relationship between covers of moss and of the filamentous cyanobacterium Stigonema, suggesting a competitive interaction. This study

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Toomanian, Ara. "A SUB-PIXEL VISUALIZATION METHOD TO DISPLAY FUZZY PHENOMENA USING RGB COLOR COMPOSITE (CASE STUDY: MANGROVES FOREST)." Geodesy and cartography 48, no. 4 (2022): 193–201. http://dx.doi.org/10.3846/gac.2022.16092.

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Natural phenomena boundaries and complexity of features in an urban area due to the low spatial resolution, lead to more pixels of satellite images included in reflectance of multiple land-cover/object components. The sub-pixel information extracting model outputs are fractional cover maps of interested class (end-member), with membership values between zero and one. These maps represented gradient change in only one fuzzy phenomenon boundaries such as vegetation cover. However, in multiple fuzzy class area or complex fuzzy phenomena such as mangrove forests, in the northwest of the Qeshm Isla

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Fahrul Barcinta, Muhammad, Masudin Sangaji, and Gino V. Limmon. "Conditions Of Scleractinian Coral Cover Percentage On The North Coast Of Ambon Island, Maluku Province." International Journal of Science and Environment (IJSE) 3, no. 4 (2023): 138–44. http://dx.doi.org/10.51601/ijse.v3i4.81.

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Coral reefs are one of the most ecologically productive and diverse ecosystems. This study aims to determine the condition of scleractinian coral cover in the northern coastal waters of Ambon Island. Data collection in the field is carried out using the systematic sampling method. A quadrant measuring 1x1 m2 becomes the sampling area. Quadrants are placed on transects 20 m long with quadrant intervals on transect lines of 5 m (0, 5, 10, 15, and 20 m). The transects are placed parallel to the shoreline at depths of 3 m and 10 m, with four transects at each depth, and the distance between transe

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Rahman, Syafiqa Haidar Afif Abdul, Mohamad Amirul Hafiz Md Shukri, Amir Sharifuddin Ab Latip, and Zulkiflee Abd Latif. "Land use and land cover change analysis using satellite images in Gua Musang, Kelantan." IOP Conference Series: Earth and Environmental Science 1019, no. 1 (2022): 012025. http://dx.doi.org/10.1088/1755-1315/1019/1/012025.

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Abstract The use of multisensor remote sensing to characterise forest structure has significant promise for mapping and understanding forest biological processes, making remote sensing an effective technology in detecting deforestation for forest management and monitoring. The aim of this study is to detect land use and land cover (LULC) changes due to deforestation at Gua Musang, Kelantan using satellite images. The Landsat 8 OLI satellite images were obtained from United State Geological Survey (USGS) for year 2017 to 2019. The supervised classification with maximum likelihood algorithm was

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Canella, Marco, Gianni Poloniato, Cesare Lasen, et al. "Benefits of conservation-driven mowing for the EU policy species Gladiolus palustris Gaudin in mountain fen meadows: a case-study in the European Alps." Journal of Mountain Science 17, no. 9 (2020): 2097–107. http://dx.doi.org/10.1007/s11629-019-5781-4.

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Abstract The sword lily Gladiolus palustris Gaudin is protected on European level and listed in Annexes II and IV of the EC Habitat Directive 92/43/EEC. It grows in nutrient-poor, calcareous meadows in central and eastern Europe. Tree encroachment in montane meadows of the European Alps as a result of recent land use changes and the abandonment of traditional farming practices threaten the survival of this species. Conservation-driven mowing is considered a feasible conservation measure for maintaining high species diversity in abandoned semi-natural grasslands. To assess the effects of ten ye

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