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Displaying 596 - 600 of 1605Security and equity of conservation covenants: Contradictions of private protected area policies in Australia
Private land conservation is becoming a popular policy approach, given the constraints of increasing public protected areas, which include reduced availability of land for purchase, insufficient budgets for acquisition, and escalating management costs of small, isolated reserves. Conservation covenants represent a common policy instrument, now prominent in the United States, Canada and Australia, employed to compliment the protected area network.
Forecasting crop yield using remotely sensed vegetation indices and crop phenology metrics
We used data from NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) in association with county-level data from the United States Department of Agriculture (USDA) to develop empirical models predicting maize and soybean yield in the Central United States. As part of our analysis we also tested the ability of MODIS to capture inter-annual variability in yields. Our results show that the MODIS two-band Enhanced Vegetation Index (EVI2) provides a better basis for predicting maize yields relative to the widely used Normalized Difference Vegetation Index (NDVI).
Trade-offs between land use intensity and avian biodiversity in the dry Chaco of Argentina: A tale of two gradients
Studies to assess the relationship between agriculture production and biodiversity conservation usually focus on one gradient ranging from a natural reference land cover type (typically forest) to an intensive productive land use. However, many semi-arid ecoregions such as the dry Chaco are characterized by a mosaic of different land covers, including natural grasslands and woody vegetation with different degrees of transformation, frequently aimed at meat production.
Economic and employment implications of a carbon market for integrated farm forestry and biodiverse environmental plantings
Many studies have predicted, at a national scale, the economic viability of new forestry plantings to contribute to mitigation of greenhouse gas emissions in Australia's cleared agricultural lands. Such predictions are highly uncertain given: (i) differences in site quality, management regimes and planting geometries (belt versus block configurations) result in rates of sequestration that are highly variable at regional scales and (ii) uncertainties in carbon accounting methods in future carbon markets.
ethical foundation for careful animal husbandry
Current practices in intensive animal production increasingly raise questions with respect to animal ethics both among the public in Europe and in political circles. This paper integrates three areas of philosophical views in order to formulate a general ethical position with respect to animal husbandry. The first area regards the question to what type of beings animals are. Secondly, an evaluative model of agrarian practices is employed in order to obtain a better perception on the place of animals in animal husbandry.