Skip to main content

page search

Displaying 2701 - 2712 of 4599

Predicting Cattle Rancher Wildlife Management Activities: An Application of the Theory of Planned Behavior

Journal Articles & Books
December, 2012
United States of America

Integrating wildlife management into routine livestock operations has become a priority of many wildlife conservation agencies and nongovernmental organizations because grazing lands occupy more than one-third of the United States. We surveyed 1,093 beef cattle ranchers by mail to predict cattle rancher intentions to consider wildlife management in routine cattle management activities. We framed our survey using the theory of planned behavior, whereby attitudes, subjective norms, and perceived behavioral controls explain behavioral intent.

Accounting for space and time in soil carbon dynamics in timbered rangelands

Journal Articles & Books
December, 2012

Employing rangelands for climate change mitigation is hindered by conflicting reports on the direction and magnitude of change in soil organic carbon (ΔSOC) following changes in woody cover. Publications on woody thickening and deforestation, which had led to uncertainty in ΔSOC, were re-evaluated, and the dimensional-dependence of their data was determined. To model the fundamentals of SOC flux, linked SOC pools were simulated with first-order kinetics. Influences from forest development timelines and location of mature trees, with a potential for deep-set roots, were considered.

Land-use impacts on woody plant density and diversity in an African savanna charcoal production region

Journal Articles & Books
December, 2012
Uganda
Global

The density and diversity of woody plant species were studied within grazing, cultivation and charcoal production land-use areas in a multiple-use savanna woodland, central Uganda, using 75 plots with an area of 0.1 ha (Whittaker plots). Plant density was significantly higher under charcoal production (7131 ± 755 plants/ha) and cultivation (6612 ± 665 plants/ha) compared with the grazing lands (4152 ± 525 plants/ha).

Applying local knowledge to rangeland management in northern Mongolia: do ‘narrow plants’ reflect the carrying capacity of the land?

Journal Articles & Books
December, 2012
Mongolia

Investigating traditional ecological knowledge (TEK) by the scientific approach is a useful way to develop sustainable rangeland management. Numerous trials have been done on plant species compositions and biomass, but little testing has been done on the TEK of plant productivity and nutrient values, which are important for proper rangeland management. In this study, we tested the TEK of pastoralists living in Bulgan, northern Mongolia, regarding plant productivity and nutrient values. We examined biomass, growth form, plant productivity, and crude protein amounts along grazing gradients.

Applying local knowledge to rangeland management in northern Mongolia: do ‘narrow plants’ reflect the carrying capacity of the land?

Journal Articles & Books
December, 2012
Mongolia

Investigating traditional ecological knowledge (TEK) by the scientific approach is a useful way to develop sustainable rangeland management. Numerous trials have been done on plant species compositions and biomass, but little testing has been done on the TEK of plant productivity and nutrient values, which are important for proper rangeland management. In this study, we tested the TEK of pastoralists living in Bulgan, northern Mongolia, regarding plant productivity and nutrient values. We examined biomass, growth form, plant productivity, and crude protein amounts along grazing gradients.

Degradation of soils as a result of long-term human-induced transformation of the environment in Iran: an overview

Journal Articles & Books
December, 2012
Iran

Human-induced soil degradation is a serious and complex environmental challenge in Iran. For a long time, human activities, namely the overuse of land, have been influencing the natural processes on and in soils; therefore, various types of soil degradation can be observed in many parts of the country. The understanding and the consideration of direct and indirect effects of human activities on soils are indispensable for the prediction of the human impact on soil degradation processes.

Consider the source: The impact of media and authority in outreach to private forest and rangeland owners

Journal Articles & Books
December, 2012
United States of America

Over half of the United States is privately owned. Improving environmental sustainability requires that the scientific and management communities provide effective outreach to the many landowners making decisions about land use and management practices on these lands. We surveyed California forest and rangeland owners in ten counties throughout the state to assess the impact of existing outreach and identify gaps in information distribution and content.

Ecosystem functional changes associated with land clearing in NW Argentina

Journal Articles & Books
December, 2012
Argentina

We assessed the extension of natural habitat conversion into croplands and grazing lands in subtropical NW Argentina and its impact on two key ecosystem functional attributes. We quantified changes in remotely sensed surrogates of aboveground net primary production (ANPP) and seasonality of carbon gains. Both functional attributes are associated with intermediate ecosystem services sensuFisher et al. (2009). Deforestation was estimated based on photointerpretation of Landsat imagery.

role of grasslands in food security and climate change

Journal Articles & Books
December, 2012

BackgroundGrasslands are a major part of the global ecosystem, covering 37 % of the earth's terrestrial area. For a variety of reasons, mostly related to overgrazing and the resulting problems of soil erosion and weed encroachment, many of the world's natural grasslands are in poor condition and showing signs of degradation. This review examines their contribution to global food supply and to combating climate change.ScopeGrasslands make a significant contribution to food security through providing part of the feed requirements of ruminants used for meat and milk production.

Is Proactive Adaptation to Climate Change Necessary in Grazed Rangelands?

Journal Articles & Books
December, 2012

In this article we test the notion that adaptation to climate change in grazed rangelands requires little more effort than current approaches to risk management because the inherent climate variability that characterizes rangelands provides a management environment that is preadapted to climate change. We also examine the alternative hypothesis that rangeland ecosystems and the people they support are highly vulnerable to climate change.

Growth of sheep as affected by grazing system and grazing intensity in the steppe of Inner Mongolia, China

Journal Articles & Books
December, 2012
China

The Inner Mongolian grassland steppe is the most important grazing land in China in terms of cow milk, mutton, and cashmere production. However, intensive livestock grazing has severely degraded the steppe grassland. A sophisticated grazing management is therefore essential for an economically viable use of the grassland without amplifying its desertification.

Drivers of wetland disturbance and biodiversity impacts on a tropical oceanic island

Journal Articles & Books
December, 2012
Mauritius

Wetlands are biologically important elements of landscapes and among the most threatened ecosystems on Earth. On the island of Mauritius, many remaining wetlands are being rapidly converted and fragmented by intense land-use demands. We surveyed 209 coastal wetlands on Mauritius to assess their biophysical attributes, land-use activities, and patterns of disturbance, to help identify factors that threaten wetland biodiversity. Most wetlands exhibited severe edge-related disturbances and more than half were fragmented.