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IssuesparcoursLandLibrary Resource
There are 2, 146 content items of different types and languages related to parcours on the Land Portal.

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Displaying 97 - 108 of 1813

Evaluation of Landscape-Level Grazing Capacity for Domestic Sheep in Alpine Rangelands

Journal Articles & Books
Décembre, 2014
Norvège

Balancing the number of grazing animals with the level of plant resources is a core issue in grazing management. Complete, full-coverage vegetation surveys are often used for this purpose, but these are expensive undertakings. We have presented a method to downscale information from regional sampling surveys by poststratification using a land cover map derived from satellite-based measures of reflectance values. This approach opens new prospects for landscape-level evaluation of productivity.

Perceptions of Texas Landowners Regarding Fire and Its Use

Journal Articles & Books
Décembre, 2008

Growing recognition that periodic fire is critical for maintaining the health of many rangeland ecosystems and concerns over more frequent catastrophic wildfires have focused attention on prescribed fire as an ecosystem restoration and fuel management tool. In states such as Texas, where most land is privately owned, the level of success of outreach activities aimed at expanding the adoption of specific management practices is influenced by the extent to which landowners' perceptions, interests, and concerns regarding such practices are addressed.

Asymmetric Ecological and Economic Responses for Rangeland Restoration: A Case Study of Tree Thickening in Queensland, Australia

Journal Articles & Books
Décembre, 2014
Australie

Economic motivation for implementing targeted responses to rangeland degradation often lag the events that cause degradation and existing monitoring schemes often lack the sensitivity or the connections to ecological processes to reliably serve as a basis for evaluating success. In this paper, we present an approach for quantifying the relationship of economic output and land degradation during the intermediate stages of degradation. We also propose an approach that can provide enhanced incentives to implement proven responses before degradation processes are entrained.

Winter Bird Habitat Use in a Heterogeneous Tallgrass Prairie

Journal Articles & Books
Décembre, 2014

In the Flint Hills of Kansas and Oklahoma, U.S.A., grazing land is managed predominantly to promote homogeneous grassland structure. This potentially limits the diversity of habitats for grassland obligate songbirds with narrow habitat preferences during the breeding season, prompting ecologists and conservationists to call for managing rangelands for increased heterogeneity. The Flint Hills also hosts multiple species of conservation concern during winter, but avian habitat requirements are less well known during this period and seldom considered in management recommendations.

Formal institutions and their role in promoting sustainable land management in boteti, botswana

Journal Articles & Books
Décembre, 2014
Botswana

The aim of this paper is to discuss the role of existing policies, programmes and legislation in promoting sustainable land management and livelihoods in mid‐central Botswana. The paper is based on data from the survey of relevant literature, analysis of policy and legal documents, field observations and a series of stakeholder workshops held in the villages of Mopipi, Mokobaxane and Rakops in Boteti Sub‐District between 2008 and 2009.

Object-Based Image Analysis of Pinyon and Juniper Woodlands Treated to Reduce Fuels

Journal Articles & Books
Décembre, 2014

Mechanical and prescribed fire treatments are commonly used to reduce fuel loads and maintain or restore sagebrush steppe rangelands across the Great Basin where pinyon (Pinus) and juniper (Juniperus) trees are encroaching and infilling. Geospatial technologies, particularly remote sensing, could potentially be used in these ecosystems to (1) evaluate the longevity of fuel reduction treatments, (2) provide data for planning and designing future fuel-reduction treatments, and (3) assess the spatial distribution of horizontal fuel structure following fuel-reduction treatments.

Livestock and the rangeland commons in South Africa's land and agrarian reform

Journal Articles & Books
Décembre, 2013
Afrique du Sud
Afrique australe

Land and agrarian reform has the potential to expand South Africa's rangeland commons and enhance their contribution to the livelihoods of the rural poor, yet to a large extent this has been an opportunity missed. Shifting policy agendas have prioritised private land rights and commercial land uses, seeking to dismantle the racial divide between the white commercial farming areas and the ex-Bantustans by allocating former white farms to black farmers. These agendas and planning models reflect class and gender bias and a poor understanding of common property.

Institutions and governance of communal rangelands in South Africa

Journal Articles & Books
Décembre, 2013
Afrique du Sud
Afrique australe
Afrique

The creation of local institutions with a mandate over land access and control is seen as a prerequisite for successful decentralisation of land tenure and effective local resource management in sub-Saharan Africa. However, with land tenure reform in South Africa currently at a state of legislative impasse, real uncertainty now exists over land rights and governance of rangeland in many communal areas.

Interactions between elevated atmospheric CO2 and defoliation on North American rangeland plant species at low and high N availability

Journal Articles & Books
Décembre, 2012
États-Unis d'Amérique

Although common disturbances of grazing lands like plant defoliation are expected to affect their sensitivity to increasing atmospheric CO2 concentration, almost no research has been conducted to evaluate how important such effects might be on the direct responses of rangelands to CO2. This growth chamber experiment subjected intact plant–soil cylinders from a Wyoming, USA, prairie to a 3‐way factorial of CO2 (370 vs. 720 μL L−1), defoliation (non‐clipped vs. clipped) and soil nitrogen (control vs. 10 g m−2 added N) under simulated natural climatic conditions.

conservation auction for landscape linkage in the southern Desert Uplands, Queensland

Journal Articles & Books
Décembre, 2009

Conservation auctions are a type of market-based instrument (MBI) that can achieve a more cost-efficient allocation of public funds than approaches such as devolved grants. In this paper, the conduct of a multiple round conservation auction to improve biodiversity management in a rangelands area is outlined. The auction was designed to develop a wildlife corridor across the southern Desert Uplands bioregion in Queensland and to improve management of rangelands areas. The conservation auction incorporated two important new design features.