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Mostrando ítems 1 a 9 de 35.
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Publicación revisada por pares
México, Estados Unidos de América
Rangeland management in former tropical rainforest areas may affect ecosystem services. We hypothesized that management practices like burning and overgrazing reduce supporting (soil quality) and consequently also provisioning (forage productivity and quality) and regulating (nutrient cycling) ecosystem services.
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Artículos de revistas y libros
Argelia, Egipto, Marruecos, Sudáfrica, Canadá, Túnez, Sudán
The aim of the practical guidelines presented in this document is to support the adoption and usability of the criteria and indicators (C&I) for Sustainable Management of Forests and Rangelands (SFRM) adopted by the 22nd Session of the Near East Forestry and Range Commission (NEFRC). The guidelines are based on the review of existing literature and on consultations with national experts and relevant institutions in Morocco, Sudan and Tunisia regarding challenges identified in the use of the prop osed C&I for SFRM.
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Informes e investigaciones
Brasil, Canadá, China, Dinamarca, India, Níger, Tanzania, Viet Nam, América central, América del Sur, América Septentrional, Asia meridional, Asia sudoriental, África occidental, África, Asia, Asia oriental, África oriental
This paper identifies sixteen cases of large-scale actions in the agriculture and forestry sectors that have adaptation and/or mitigation outcomes, and distils lessons from the cases. The cases cover policy and strategy development (including where climate-smart objectives were not the initial aim), climate risk management through insurance, weather information services and social protection, and agricultural initiatives that have a strong link to climate change adaptation and mitigation.
Key lessons learned include:
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Artículos de revistas y libros
Estados Unidos de América
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Artículos de revistas y libros
Estados Unidos de América
BACKGROUND: Pastoralism in the USA began coincidently with the initiation of profound ecological change resulting from colonization in the sixteenth century. Relationships between pastoralism and wildlife conservation in three different contexts of land tenure, environmental legacy, and geography are examined. RESULTS: On the federal rangelands of the Intermountain West, based on limited scientific information, wildlife policy has been interpreted to require separation of native bighorn sheep from livestock to prevent disease transmission.
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Library Resource
Artículos de revistas y libros
Estados Unidos de América
Rangelands make an important contribution to carbon dynamics of terrestrial ecosystems. We used a readily accessible interface (COMET VR) to a simulation model (CENTURY) to predict changes in soil carbon in response to management changes commonly associated with conservation programs.
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Library Resource
Artículos de revistas y libros
Estados Unidos de América
BACKGROUND: Pastoralism in the USA began coincidently with the initiation of profound ecological change resulting from colonization in the sixteenth century. Relationships between pastoralism and wildlife conservation in three different contexts of land tenure, environmental legacy, and geography are examined. RESULTS: On the federal rangelands of the Intermountain West, based on limited scientific information, wildlife policy has been interpreted to require separation of native bighorn sheep from livestock to prevent disease transmission.
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Library Resource
Artículos de revistas y libros
Estados Unidos de América
Ultra-high-resolution digital aerial imagery has great potential to complement or replace ground measurements of vegetation cover for rangeland monitoring and assessment. This research investigated object-based image analysis (OBIA) techniques for classifying vegetation in southwestern USA arid rangelands with 4 cm resolution digital aerial imagery. We obtained high r-square values for the regressions relating ground- to image-based measures of percent cover (r-square values: 0.82–0.92).
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Library Resource
Artículos de revistas y libros
Estados Unidos de América
Understanding cheatgrass (Bromus tectorum) dynamics in the Northern Great Basin rangelands, USA, is necessary to effectively manage the region's lands. This study's goal was to map and monitor cheatgrass performance to identify where and when cheatgrass dieoff occurred in the Northern Great Basin and to discover how this phenomenon was affected by climatic, topographic, and edaphic variables. We also examined how fire affected cheatgrass performance.
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Library Resource
Artículos de revistas y libros
Estados Unidos de América
In the western United States, livestock grazing often co-exists with recreation, cultural resource management and biodiversity protection on federal and state protected rangelands as well as on many local government open space areas. While the value of livestock grazing for managing rangeland vegetation to reduce fire fuel loads and improve wildlife habitat is increasingly recognized by resource management professionals, public concerns, and conflict between recreationist and livestock have led to reductions in public land grazing.
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