Resultados de búsqueda - "river"

Effects of extreme land fragmentation on wildlife and livestock population abundance and distribution por Said, Mohammed Yahya, Ogutu, Joseph O., Kifugo, S.C., Makui, O., Reid, Robin S., Leeuw, Jan de

“…To understand and characterise the forces driving habitat fragmentation, we analyse how biophysical (soils, slope, rainfall, rivers) and human-created (roads, towns, parks, quarries) features influence where people choose to fence the land in the Athi-Kaputiei ecosystem of Kenya. …”
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Digital soil mapping of metals and metalloids in croplands using multiple geospatial data and machine learning, implemented in GEE, for the Peruvian Mantaro Valley por Pizarro Carcausto, Samuel, Vera Vilchez, Jesús Emilio, Huamani, Joseph, Cruz, Juancarlos, Lastra Paucar, Sphyros Roomel, Solórzano Acosta, Richard Andi, Verástegui Martínez, Patricia

“…Additionally, each element analyzed has a different combination of environmental covariates as predictor, mainly soil, climate, topographic and distance variables especially croplands close to rivers, with less importance for spectral variables. …”
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Seasonal dynamics, geographical range size, hosts, genetic diversity and phylogeography of Amblyomma sculptum in Argentina por Tarragona, Evelina Luisa, Sebastian, Patrick Stephan, Saracho Bottero, Maria Noelia, Martinez, Emilia Irina, Debárbora, Valeria Natalia, Mangold, Atilio Jose, Guglielmone, Alberto, Nava, Santiago

“…A. sculptum shows a marked ecological preference for Chaco Húmedo eco-region and “Albardones” forest of the great rivers in the wetlands in the Chaco Biogeographical Province, and for Selvas Pedemontanas and Selva Montana in the Yungas Biogeographical Province. …”
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Influence of the habitat on the potential for cannibalism and population dynamics in stream-dwelling European grayling (Thymallus thymallus L.) por Lindström, Carl-Johan

“…In this study I quantified and compared the potential for cannibalism in stream-dwelling European grayling populations in three rivers in Jämtland by means of habitat classifications. …”

The fishery of Danau Sentarum por Dudley, R.G.

“…Fishing gear surveys revealed that villagers use 800 km of gill nets, 20,000 traps and 500,000 hooks in 80,000 ha of lakes, rivers and flooded forest within the park. Data from 4,000 catches were collected by local people during 1992 through 1995.The estimated annual catch of between 7,800 and13,000 tonnes (or 97,5 to 162,5 kg ha-l) is caught by cylindrical rattan traps 23%, gillnets 20%, cast nets 18%, other traps 15%, hooks 14% and funnel nets 9%. …”
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Assessing integrated watershed management and spatial groundwater vulnerability to pollution in priority watersheds of the yacyreta dam in paraguay por Musálem Castillejos, K.

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Presence and habitat use of the endangered Bornean elephant (Elephas maximus borneensis) in the INIKEA rehabilitation project site (Sabah, Malaysia) : a pilot study por Crespo Mingueza, Laia

“…This preliminary assessment suggests that the elephants travel through the main road as well as roam and feed in forested areas and old roads that are mainly flat, relatively easy to access from the main road and nearby rivers. Results also indicate that this site can play an important role as a corridor for the elephants to connect with other forest reserves in Central Sabah and as a refuge to avoid areas highly disturbed by humans. …”

Beaver wetland and lake effects on Francisella tularensis in Swedish landscapes and hares por Pihlgren Hökby, Lovisa

“…Associations between outbreaks of tularemia and lakes and rivers have earlier been observed, and semi-aquatic rodents and mosquitoes are believed to be key species groups in the epidemiological cycle of the disease. …”

Beneficios de los corredores ribereños de Guadua angustifolia en la protección de ambientes acuáticos en la Ecorregión Cafetera de Colombia. 1. Efectos sobre las propiedades del su... por Camargo, Juan Carlos, Chará, Julián, Giraldo Sánchez, Lina Paola, Chará Serna, Ana Marcela, ¨Pedraza, Gloria Ximena

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Hydrologic response to cattle grazing in the Ethiopian highlands por Mwendera, E.J., Mohamed-Saleem, M.A.

“…Sediments produced from the highlands, which form headwaters of major rivers in the region, are modifications, the plot design presented here can be used for assessing livestock impacts on natural resources on different landforms at large scales such as watersheds. …”
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Building ecosystem resilience for climate change adaptation in the Asian highlands por Xu, J.C., Grumbine, R. Edward

“…The Asian Highlands, the vast mountainous area from Pakistan to China including the Hindu‐Kush Himalaya and Tibetan Plateau, have considerable global importance; they are the source of most of the major rivers of Asia, which sustain billions of downstream dwellers, are part of four Global Biodiversity Hotspots, and support rich cultural diversity. …”
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Assessing integrated watershed management and spatial groundwater vulnerability to pollution in priority watersheds of the Yacyretá dam in Paraguay por Musálem Castillejos, Karim

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The effect of migratory fish on freshwater ecosystem nutrient dynamics por Enbom, Magnus

“…Therefore it is less clear if these anadromous fish can significantly contribute to spatial translocation of nutrients from the Baltic Sea to the freshwater rivers. The aim of this study was to investigate if transported nutrients incorporate into the tissues of aquatic communities and riparian plant communities. …”

Smallholder agroprocessors' willingness to pay for value-added solid-waste management solutions por Omilani, O., Abass, A., Okoruwa, V.O.

“…It is expected that public expenditure on training to empower processors to use solid-waste conversion technologies for generating value-added products will lead to such social benefits as lower exposure to environmental toxins from the air, rivers and underground water, among others, and additional income for the smallholder processors. …”
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Long‐term changes in population size and the age structure and sex ratio of waterbuck in a Sudanian savannah of Burkina Faso por Konate, S., Sirima, D., Ardjima, L., Sanou, Y., Hema, E.M., Kabre, B.G., Fa, J.E., Luiselli, L., Petrozzi, F.

“…Most animals were concentrated along the larger rivers. There was no influence of poacher activity on waterbuck distribution. …”
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Spatial Niche Expansion at Multiple Habitat Scales of a Tropical Freshwater Turtle in the Absence of a Potential Competitor por Petrozzi, F., Ajong, S.N., Pacini, N., Dendi, D., Bi, S.G., Fa, J.E., Luiselli, L.

“…At a macro-habitat scale, P. castaneus is captured mainly in marshlands, whereas P. cupulatta is found in both rivers and wetlands. The two species differ significantly in their use of: (i) banks (P. castaneus being found primarily in spots with grassy banks, whereas P. cupulatta is found in spots with forested banks), and (ii) aquatic vegetation (P. cupulatta prefers spots with more abundant aquatic vegetation than P. castaneus), but both species select sites with no or moderate current. …”
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FTA Highlight No.5 – Food Security and Nutrition por Ickowitz, A., McMullin, S., Dawson, Ian K., Sunderland, T.C.H., Powell, B., Nurhasan, M., Vinceti, B., Jamnadass, Ramni, Meybeck, A., Gitz, V.

“…Wild and planted trees provide important foods, and forests are key habitats for wildlife and sustain healthy rivers providing fish, both of which also are important for diets. …”
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Methodology for Measuring Greenhouse Gas Emissions from Agricultural Soils Using Non-isotopic Techniques por Zaman, M., Kleineidam, K., Bakken, L., Berendt, J., Bracken, C., Butterbach-Bahl, Klaus, Cai, Z., Chang, S.X., Clough, T., Dawar, K., Ding, W.X., Dörsch, P., Reis Martins, M. dos, Eckhardt, C., Fiedler, S., Frosch, T., Goopy, John P., Görres, C.M., Gupta, A., Henjes, S., Hofmann, M.E.G., Horn, M.A., Jahangir, M.M.R., Jansen-Willems, A., Lenhart, K., Heng, L., Lewicka-Szczebak, D., Lucic, G., Merbold, Lutz, Mohn, J., Molstad, L., Moser, G., Murphy, P., Sanz-Cobena, A., Šimek, M., Urquiaga, S., Well, R., Wrage-Mönnig, N., Zaman, S., Zhang, J., Müller, Christoph

“…Specialised techniques are also required for GHG measurements in aquatic systems (i.e. rivers), which are often affected by the transfer of nutrients from agricultural fields and therefore are an important indirect source of emission of GHGs. …”
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Mental models and the potential for crop intensification in coastal Bangladesh: How do farmers’ perceptions reflect proposed agricultural development pathways? por Shahrin, Sumona, Krupnik, Timothy J., Aravindakshan, Sreejith, Groot, Jeroen

“…A deltaic country, Bangladesh has a dense network of interconnected rivers and over 230 tributaries flowing into the Bay of Bengal. …”
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Assessing sand dams for contributions to local water security and drought resilience in the semi-arid eastern Shashe catchment, Zimbabwe por Lazurko, A., Lautze, Jonathan F., Hussey, S., Muzarabani, C., Ngwenya, N., Ebrahim, Girma Yimer

“…Sand dams, which store water by capturing water in sand-filled ephemeral rivers during the wet season, are one promising storage option. …”
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