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Inorganic nitrogen, sterols and bacterial source tracking as tools to characterize water quality and possible contamination sources in surface water

Journal Articles & Books
Diciembre, 2012
Canadá

The effects of agricultural activities on stream water quality were assessed by nitrogen analysis, further investigated by gas chromatography mass spectrometry (GC-MS) sterol analysis (including chemometric analysis), and characterized by bacterial source tracking (BST). Surface water samples were collected from five sites, throughout the agriculturally-influenced Nathan Creek watershed, British Columbia, Canada and a nearby control site between October 2005 and March 2006.

Feature Extraction Techniques for Measuring Piñon and Juniper Tree Cover and Density, and Comparison with Field-Based Management Surveys

Journal Articles & Books
Diciembre, 2011

Western North America is experiencing a dramatic expansion of piñon (Pinus spp.) and juniper (Juniperus spp.) (P-J) trees into shrub-steppe communities. Feature extracted data acquired from remotely sensed imagery can help managers rapidly and accurately assess this land cover change in order to manage rangeland ecosystems at a landscape-scale.

The management and classification of the typical soils of the Yıldız Forest Ecosystem

Policy Papers & Briefs
Diciembre, 2009
Turquía

The soils of the Yıldız Mountain, namely Entisols, Mollisols, Inceptisols, Ultisols, and Spodosols, from Poyralı, Yeniceköy, Demirköy and northwest of Igneada that were developed on calcareous sandy sediments, chlorite schists, Pliocene sediments and alluvial materials were studied in this paper.

Organizational and economic mechanism of agricultural land use planning regulation with the aim to increase land use efficiency

Policy Papers & Briefs
Diciembre, 2011
Belarús

In course of the research there was studied the theoretical bases of organizational and economic mechanism of land use regulation, which include the notions, principles, requirements, factors and criteria. The conceptual scheme and the model of functioning of the organizational-economic mechanism were developed. Study was realized in the conditions of the Republic of Belarus.

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

Journal Articles & Books
Diciembre, 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. We aimed to examine how grazing affects ecosystem structure, function, and composition. We compiled a database of 7615 records reporting an effect of grazing by sheep and cattle on 278 biotic and abiotic response variables for published studies across Australia.

Improvement of land-property relations in the direction of further liberalization of economic activity

Policy Papers & Briefs
Diciembre, 2011
Belarús

In course of the research there was studied the system of measures of liberalization of conditions for business activity actualization in the conditions of the Republic of Belarus. The liberalization management of conditions of realization of economic activities (which include the use, estimation of conditions and protection of land resources of Belarus) is expedient to consider in two directions which are inseparably interlinked.

integrated representation of the services provided by global water resources

Journal Articles & Books
Diciembre, 2013

Water is essential not only to maintain the livelihoods of human beings but also to sustain ecosystems. Over the last few decades several global assessments have reviewed current and future uses of water, and have offered potential solutions to a possible water crisis. However, these have tended to focus on water supply rather than on the range of demands for all water services (including those of ecosystems). In this paper, a holistic global view of water resources and the services they provide is presented, using Sankey diagrams as a visualisation tool.

Emergy evaluation of contrasting dairy systems at multiple levels

Journal Articles & Books
Diciembre, 2013
Francia

Emergy accounting (EmA) was applied to a range of dairy systems, from low-input smallholder systems in South Mali (SM), to intermediate-input systems in two regions of France, Poitou-Charentes (PC) and Bretagne (BR), to high-input systems on Reunion Island (RI). These systems were studied at three different levels: whole-farm (dairy system and cropping system), dairy-system (dairy herd and forage land), and herd (animals only). Dairy farms in SM used the lowest total emergy at all levels and was the highest user of renewable resources.

Modelling atmospheric and hydrologic processes for assessment of meadow restoration impact on flow and sediment in a sparsely gauged California watershed

Journal Articles & Books
Diciembre, 2014

The restoration of meadowland using the pond and plug technique of gully elimination was performed in a 9‐mile segment along Last Chance Creek, Feather River Basin, California, in order to rehabilitate floodplain functions such as mitigating floods, retaining groundwater, and reducing sediment yield associated with bank erosion and to significantly alter the hydrologic regime.

Status of native fishes in the western United States and issues for fire and fuels management

Journal Articles & Books
Diciembre, 2003
Estados Unidos de América

Conservation of native fishes and changing patterns in wildfire and fuels are defining challenges for managers of forested landscapes in the western United States. Many species and populations of native fishes have declined in recorded history and some now occur as isolated remnants of what once were larger more complex systems. Land management activities have been viewed as one cause of this problem. Fires also can have substantial effects on streams and riparian systems and may threaten the persistence of some populations of fish, particularly those that are small and isolated.