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Displaying 4069 - 4080 of 6741

Biological indicators of soil quality and soil organic matter characteristics in an agricultural management continuum

Journal Articles & Books
December, 2014
United States of America

Relationships among biological indicators of soil quality and organic matter characteristics were evaluated across a continuum of long-term agricultural practices in Missouri, USA. In addition to chemical and physical soil quality indicators, dehydrogenase and phenol oxidase activity were measured, ¹³C nuclear magnetic resonance (¹³C NMR) and diffuse reflectance Fourier transform (DRIFT) spectra of soil organic matter were collected, and visible, near-infrared reflectance (VNIR) spectra of whole soil were collected.

Bombing for Biodiversity—Enhancing Conservation Values of Military Training Areas

Journal Articles & Books
December, 2015
Africa
Global
Asia
South America

Global defense spending is $US1753 billion annually or approximately 2.5% of the world GDP. Significant time and resources is spent in training 28 million defense personnel worldwide. Much of this training on land takes place within specifically designated military training areas (MTAs). Globally, the size of the MTA estate is likely to be very large, but just how large is unknown. Our preliminary analyses has identified that MTAs cover at least 1% of the Earth's surface.

Challenging the concept of Aboriginal mosaic fire practices in the Lake Eyre Basin

Journal Articles & Books
December, 2015
Australia

Mosaic burning is the deliberate creation of a mosaic of patches representing different fire histories. It is often recommended for management of Australia’s natural landscapes, on the assumption that it enhances biodiversity and reduces fire hazard through increased spatial and temporal diversity of fuel loads and species composition. It is also suggested that such fire practices were used throughout Australia by traditionally living Aboriginal people.

Linking farming systems to landscape change: An empirical and spatially explicit study in southern Chile

Journal Articles & Books
December, 2010
Chile

In rural areas, land use and cover change is often the cumulative result of individual farmer decisions. The goal was to construct a spatial typology of farming systems and assess their influence on the extent and spatial distribution of deforestation, forest re-growth, and agriculture expansion in southern Chile between 1999 and 2007. We present a farm typology and its spatial rendering through the combination of farm-cadastral information and land cover and change data. Using multivariate statistical methods, four types were identified.

Nitrous oxide flux dynamics of grassland undergoing afforestation

Journal Articles & Books
December, 2010
Ireland

In Ireland fertilised grasslands are major source of nitrous oxide (N₂O), a powerful greenhouse gas. We present 5 years (2004-2008) of eddy-covariance (EC) observations of N₂O fluxes from an ecosystem transitioning from wet managed grassland to a broadleaf forestry. One sector of the EC footprint was converted to forestry during the observation period, while the remainder of the footprint remained under intensively managed grassland.

Recent advances in sustainable multifunctional land and urban management in Europe: a review

Journal Articles & Books
December, 2012
Europe

This review discusses high impact research in sustainable urban and land management. The focus is on large European projects that have a holistic and multi-disciplinary assessment approach towards the total environment. This paper clearly indicates that many projects propose decision-making tools partly supported by numerical models.

Conflicts between Cattlemen and the Florida Panther: Insights and Policy Recommendations from Interviews with Florida Cattlemen

Journal Articles & Books
December, 2015

Recovery of the Florida panther (Puma concolor coryi) depends on habitat conservation on private rangelands. However, cattlemen-panther conflicts and lack of trust in wildlife agencies is undermining panther conservation efforts. Based on semi-structured interviews and group meetings with Florida cattlemen, we examine how cattlemen’s land stewardship practices support panther conservation, and causes of conflicts with the panther and wildlife agencies.

Land management impacts on tree hole invertebrate communities in a Neotropical rainforest

Journal Articles & Books
December, 2015
Mexico

The Los Tuxtlas Biosphere Reserve in Southeastern Veracruz, Mexico represents the northernmost Neotropical lowland rainforest and has lost 84 % of its forests in the last forty years. Rich terrestrial and aquatic species communities are found throughout Neotropical forests, habitats increasingly threatened by land management practices. Plant-held waters, phytotelmata, are ecologically important discrete microhabitats harboring many specialist invertebrates and are abundant in tropical forests.

Linking Phenology and Biomass Productivity in South Dakota Mixed-Grass Prairie

Journal Articles & Books
December, 2013

Assessing the health of rangeland ecosystems based solely on annual biomass production does not fully describe the condition of the plant community; the phenology of production can provide inferences about species composition, successional stage, and grazing impacts. We evaluated the productivity and phenology of western South Dakota mixed-grass prairie in the period from 2000 to 2008 using the normalized difference vegetation index (NDVI). The NDVI is based on 250-m spatial resolution Moderate Resolution Imaging Spectroradiometer (MODIS) satellite imagery.

Estimating Fuel Consumption for the Upper Coastal Plain of South Carolina

Journal Articles & Books
December, 2010

Recent changes in air quality regulations present a potential obstacle to continued use of prescribed fire as a land management tool. Lowering of the acceptable daily concentration of particulate matter from 65 to 35 μg/m3 will bring much closer scrutiny of prescribed burning practices from the air quality community. To work within this narrow window, land managers need simple tools to allow them to estimate their potential emissions and examine trade-offs between continued use of prescribed fire and other means of fuels management.