Resultados de búsqueda - "Rangeland"

Control mecánico y químico de Tessaria dodoneifolia (Hook. et Arn.) Cabrera (chilca dulce) por Tolozano, Barbara, Pisani, Jorge Marcelo, Puricelli, Eduardo Carlos Jose Maria

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Constraints to Development of extensive livestock systems: Experiences from southern Ethiopia por Coppock, D. Layne

“…This paper reviews pastoral research and Development perspectives generated from the southern Ethiopian rangelands during the 1980s. This system was selected as a case study of constraints in African pastoral Development because the experiences from both research and Development are fairly well documented and integrated. …”
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Water relations strategies of two grass and shrub species as influenced by prescribed burning in a semiarid ecosystem in Kenya. por Ali, A.R.

“…Burning of vegetation is common in most Kenya rangelands and has been done since time immemorial. …”
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Looking beyond the obvious: Uncovering the features of natural resource conflicts in Uganda por Nkonya, Ephraim M., Markelova, Helen

“…Disputes over land, water, forests, rangelands, and other resources, both privately and commonly-held, are omnipresent across Africa and increasing in number due to the socioeconomic and environmental changes happening on micro- and macro-levels. …”
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Soil restoration after seven years of exclosure management in northwestern Ethiopia por Mekuria, Wolde, Langan, Simon J., Noble, A.D., Johnston, Robyn M.

“…Ecological restoration through exclosure establishment has become an increasingly important approach to reversing degraded ecosystems in rangelands worldwide. The present study was conducted in northwestern Ethiopia where policy programs are aiming to restore degraded lands. …”
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Relationship between NDVI of Patches and Cover Area of Grasses, Shrubs and Bare Soil Components of a Semi-Arid Steppe from North-West Patagonia, Argentina por Farina, Clara Maria, Aramayo, Maria Valeria Del Lujan, Perri, Daiana Vanesa, Martin Albarracin, Valeria Leticia, Umaña, Fernando, Bruzzone, Octavio Augusto, Easdale, Marcos Horacio

“…Distinguishing the contributions of different vegetation cover such as shrubs and grasses components into the primary production in arid and semi-arid rangelands is a key step to understanding changes at a landscape scale. …”
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Defoliation frequency affects morphophysiological traits in the bunchgrass Poa ligularis = La frecuencia de defoliación afecta las carcacterísticas morfofisiológicas en la gramínea... por Gittins Lopez, Cecilia Gabriela, Busso, Carlos Alberto, Becker, Guillermo Fernando, Ghermandi, Luciana, Siffredi, Guillermo Lorenzo

“…Poa ligularis is an important forage in Patagonian rangelands. Populations of this perennial bunchgrass have been severely affected by overgrazing. …”
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Spatial distribution of volcanic ash deposits of 2011 Puyehue-Cordón Caulle eruption in Patagonia as measured by a perturbation in NDVI temporal dynamics por Easdale, Marcos Horacio, Bruzzone, Octavio Augusto

“…Volcanic ash fallout is a recurrent environmental disturbance in forests, arid and semi-arid rangelands of Patagonia, South America. The ash deposits over large areas are responsible for several impacts on ecological processes, agricultural production and health of local communities. …”
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Interception loss, throughfall and stemflow by Larrea divaricata: The role of rainfall characteristics and plant morphological attributes por Magliano, Patricio Nicolás, Whitworth Hulse, Juan Ignacio, Florio, Eva Laura, Aguirre, Esteban C., Blanco, Lisandro Javier

“…In this paper, we explored rainfall partitioning and its biophysical controls in Larrea divaricata (jarilla), one of the most abundant shrubs in the Dry Chaco rangelands (Argentina). On average, interception loss, throughfall and stemflow accounted for 9.4, 78.6 and 12.0% of total rainfall, respectively. …”
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Local adaptation along a sharp rainfall gradient occurs in a native Patagonian grass, Festuca pallescens, regardless of extensive gene flow por Lopez, Aldana Soledad, Lopez, Dardo Ruben, Caballe, Gonzalo, Siffredi, Guillermo Lorenzo, Marchelli, Paula

“…Being a widely distributed species, F. pallescens is an excellent model species to study adaptive responses across environmental gradients facing climate change predictions, especially in dryland rangelands that maintain multiple ecosystem functions.…”
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Explaining index based livestock insurance to pastoralists por McPeak, J.G., Chantarat, S., Mude, Andrew G.

“…Livestock production in arid and semi-arid rangelands is a risky enterprise. Covariate risk of catastrophic livestock loss due to drought is the most critical uninsured risk facing livestock producers. …”
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Variación genética y ecofisiológica de Festuca pallescens (St. Yves) en relación a un gradiente pluviométrico en Patagonia Norte por Lopez, Aldana

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Collective action, property rights, and devolution of natural resource management: exchange of knowledge and implications for policy por Knox, Anna, Meinzen-Dick, Ruth S.

“…This paper summarizes key research findings on factors that contribute to effective devolution programs in the forestry, fisheries, irrigation, and rangelands sectors, which were presented and discussed at an international Policy Workshop on Property Rights, Collective Action and Devolution of Natural Resource Management, June 21-25, 1999, in Puerto Azul, the Philippines. …”
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Strategies for sustainable land management in the East African Highlands por Pender, John, Place, Frank, Ehui, Simeon K.

“…Soil erosion resulting from cultivation on steeply sloping terrain, mining of soil fertility due to continuous cultivation with limited application of inorganic or organic sources of soil nutrients, and deforestation and overgrazing of rangelands are among the key factors causing low agricultural productivity, widespread poverty, and food insecurity in the region. …”
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Climate change impacts livestock carrying capacity in East Africa por Duku, Confidence, Diro, Gulilat T., Demissie, Teferi, Solomon, Dawit

“…Existing approaches to livestock carrying capacity often rely on either localized ground surveys, which are insufficient for capturing the spatial variability and dynamic responses of rangelands at regional scales, or on process-based models, which require extensive calibration and are often unsuitable for data-scarce regions such as East Africa. …”
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Impacts of pastoralists on woodlands in south Turkana, Kenya: Livestock-mediated tree recruitment por Reid, Robin S., Ellis, J.E.

“…Contrary to the conventional wisdom, pastoralists may be improving rangelands in South Turkana by enhancing recruitment reliability in this important tree species.…”
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The Karkheh River Basin: the food basket of Iran under pressure. por Ahmad, M.D., Giordano, Mark

“…Land suitability analysis showed that about 71,000 ha of rangelands can be converted into rainfed wheat areas without harming the current water balance in the basin. …”
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The potential and uptake of remote sensing in insurance: A review por Leeuw, Jan de, Vrieling, A., Shee, Apurba, Atzberger, Clement, Hadgu, K.M., Biradar, Chandrashekhar M., Keah, H., Turvey, C.G.

“…For example, remotely sensed index insurance for rangelands and livestock are operational, while various applications in crop index insurance are being considered or under development. …”
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Global versus local environmental impacts of grazing and confined beef production systems por Modernel P, Astigarraga L, Picasso V

“…We estimated carbon footprint, fossil fuel energy use, soil erosion, nutrient imbalance, and risk of pesticide contamination for five real beef background-finishing systems with increasing levels of intensification in Uruguay, which were combinations of grazing rangelands (RL), seeded pastures (SP), and confined in feedlot (FL). …”
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Jessour for diversified and resilient agroecological systems to ensure food security and sustainable livelihoods in arid ecosystems por Louhaichi, Mounir, Gamoun, Mouldi

“…Livestock is continuously moved between trees, which allows rangelands to rest before winter dormancy. In arid areas of Southern Tunisia, Jessour are a vital agroecological system that support orchard plantation, annual crops and livestock, contribute to resilient, help sustain livelihoods for the majority of households and play an important role in ensuring food security under climate change and water scarcity. …”
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