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Displaying 1481 - 1485 of 1605Impact of conservation interventions on the dynamics and persistence of a persecuted leopard (Panthera pardus) population
There is an extraordinary assortment of technical approaches to conserving carnivore populations, but the effectiveness of conservation activities is rarely evaluated. Accordingly, we initiated a study to assess the impact of several conservation interventions on the dynamics and persistence of a leopard (Panthera pardus) population in Phinda Private Game Reserve, South Africa. These included revisions of the statutory systems that regulate problem animal control and trophy hunting, and we instituted a program intended to reduce human-leopard conflict in the region.
Pollinator diversity increases fruit production in Mexican coffee plantations: The importance of rustic management systems
Pollination is an ecological process that provides important services to humans. Pollination service in agroecosystems depends on several factors, including the land management systems used by farmers. Here we focused on the effects of insect pollinator diversity on coffee fruit production along a gradient of management systems in central Veracruz, Mexico. The gradient ranged from low environmental impact management systems (the native forest is not completely removed) to high environmental impact management systems (the native forest is completely removed).
Determining soil carbon stock changes: Simple bulk density corrections fail [Erratum: 2010 Aug. 15, v. 138, no. 3-4, p. 355]
Several methods are used to correct total soil carbon data in response to land use or management changes inherently coupled with concomitant alteration to bulk density (BD). However, a rigorous evaluation of correction methods has not been conducted. We compared original, maximum, and minimum equivalent soil mass (ESM) corrections to the fixed depth (FD) method and direct C concentrations.
Serving members and reaching others: The performance and social networks of a landowner cooperative
Local forest landowner associations and broader peer-to-peer learning efforts have received attention-particularly in the United States of America-as ways to increase landowner engagement in forest planning and management. Unlike traditional technical assistance and outreach, knowledge is primarily shared among landowners as opposed to being derived from natural resource professionals. While potentially promising, few studies have investigated these approaches.
contribution of crop-rotation organization in farms to crop-mosaic patterning at local landscape scales
Farming activities are major drivers of the landscape-related ecological patterning because of their multiple influences on both non-arable and arable landscape elements and mosaics. Uncertainties still remain about the way individual farmer decisions and the aggregation of their activities in space contribute to these mosaics at local landscape scales, therefore about possible levers of action in farms for ensuring sustainable landscapes. The general objective of the present study was to give an assessment of the way farms contribute to crop-mosaic patterning at local landscape scales.