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dominant erosion processes supplying fine sediment to three major rivers in tropical Australia, the Daly (NT), Mitchell (Qld) and Flinders (Qld) Rivers

Journal Articles & Books
Décembre, 2012
Australie

The tropics of northern Australia have received relatively little attention with regard to the impact of soil erosion on the many large river systems that are an important part of Australia's water resource, especially given the high potential for erosion when long dry seasons are followed by intense wet season rain. Here we use ¹³⁷Cs concentrations to determine the erosion processes supplying sediment to two major northern Australian Rivers; the Daly River (Northern Territory), and the Mitchell River (Queensland).

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

Journal Articles & Books
Décembre, 2010
Chili

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
Décembre, 2010
Irlande

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.

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

Journal Articles & Books
Décembre, 2014
États-Unis d'Amérique

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
Décembre, 2015
Afrique
Global
Asie
Amérique du Sud

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
Décembre, 2015
Australie

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 Phenology and Biomass Productivity in South Dakota Mixed-Grass Prairie

Journal Articles & Books
Décembre, 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.

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

Journal Articles & Books
Décembre, 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
Décembre, 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
Décembre, 2015
Mexique

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.

Interactions between ecological and social drivers in determining and managing biodiversity impacts of deer

Journal Articles & Books
Décembre, 2013

The management of wildlife and its impacts on biodiversity is likely to be most successful where ecological understanding is integrated with the economic and social drivers for management, and where the attitudes and behaviour of stakeholders are fully understood. Collaboration between stakeholders at the landscape level is suggested as the most efficient ‘model’ for the management of many wildlife species such as deer. However, there has been limited research to evaluate the effectiveness of collaborative management for deer or how it is perceived by individual landowners.