Overslaan en naar de inhoud gaan

page search

Displaying 1465 - 1476 of 4601

effects of disturbance on the population structure and regeneration potential of five dominant woody species – in Hugumburda‐Gratkhassu National Forest Priority Area, North‐eastern Ethiopia

LandLibrary Resource
Journal Articles & Books
december, 2016
Ethiopia

Vast areas of forests in North‐eastern Ethiopia have been replaced by cropland, shrub land or grazing areas. Thus, information about how vegetation composition and structure varies with disturbance is fundamental to conservation of such areas.

Herbicide Control Strategies for Ventenata dubia in the Intermountain Pacific Northwest

LandLibrary Resource
Journal Articles & Books
december, 2016

Ventenata dubia is an exotic annual grass that has become increasingly invasive in various perennial grass systems throughout the Intermountain Pacific Northwest. Currently, little information is available to landowners about herbicide control options. In our first field study, we evaluated V.

Benefits Derived from Rehabilitating a Degraded Semi‐Arid Rangeland in Private Enclosures in West Pokot County, Kenya

LandLibrary Resource
Journal Articles & Books
december, 2016
Kenya

Rehabilitating degraded rangelands using enclosures offers various benefits to agro‐pastoral households. However, enclosure benefits cannot be generalized as there are variations across dryland ecosystems and societies. This study assessed the qualitative and quantitative benefits derived from rehabilitating degraded rangelands using private enclosures in Chepareria, West Pokot County, Kenya.

Assessment of environment, land management, and spatial variables on recent changes in montado land cover in southern Portugal

LandLibrary Resource
Journal Articles & Books
december, 2016
Portugal

Montado decline has been reported since the end of the nineteenth century in southern Portugal and increased markedly during the 1980s. Consensual reports in the literature suggest that this decline is due to a number of factors, such as environmental constraints, forest diseases, inappropriate management, and socioeconomic issues.

Environmental and land use determinants of grassland patch diversity in the western and eastern Alps under agro-pastoral abandonment

LandLibrary Resource
Journal Articles & Books
december, 2016

Agro-pastoral decline in European mountain areas has recently caused changes to traditional landscapes with negative consequences on semi-natural grassland conservation and the associated biodiversity and ecosystem services. In the Italian Alps, grassland patches enclosed in a forest matrix are progressively disappearing.

Ecosystem structure, function, and composition in rangelands are negatively affected by livestock grazing

LandLibrary Resource
Journal Articles & Books
december, 2016
Australia

Reports of positive or neutral effects of grazing on plant species richness have prompted calls for livestock grazing to be used as a tool for managing land for conservation. Grazing effects, however, are likely to vary among different response variables, types, and intensity of grazing, and across abiotic conditions.

Reconciling Flexibility and Tenure Security for Pastoral Resources: the Geography of Transhumance Networks in Eastern Senegal

LandLibrary Resource
Journal Articles & Books
december, 2016
Senegal
Africa

The need to maintain or increase livestock mobility in arid Africa has been widely embraced by ecologists, social scientists, and more recently regional governments. These movements are seen to sustain livestock production under a highly variable and changing climate. At the same time, livestock mobility is threatened by the expansion of agriculture onto rangelands.

Simple Approaches to Improve Restoration of Coastal Sage Scrub Habitat in Southern California

LandLibrary Resource
Journal Articles & Books
december, 2016

Much of the coastal sage scrub habitat in Southern California that existed prior to European settlement has been developed for human uses. Over the past two to three decades, public agencies and land conservation organizations have worked to acquire some of the remaining lands for preservation.

critical re-evaluation of controls on spatial and seasonal variations in nitrate concentrations in river waters throughout the River Derwent catchment in North Yorkshire, UK

LandLibrary Resource
Journal Articles & Books
december, 2016

Since mean nitrate concentration along single river channels increases significantly with percent arable land use upstream of sampling points and autumn/early winter flushes in nitrate concentration are widespread, it is generally concluded that farmers contribute most of the nitrate.

Using a new PDP modelling approach for land-use and land-cover change predictions: A case study in the Stubai Valley (Central Alps)

LandLibrary Resource
Journal Articles & Books
december, 2016

Due to the progressive forest expansion in European mountain areas triggered by agricultural abandonment, semi-natural meadows and pastures of great ecological and aesthetic value are disappearing. The aim of this study is to predict and analyse the future evolution of land use and land cover (LULC) in the Stubai Valley, Central Alps.