As primeiras décadas do século XXI têm sido marcadas por uma corrida global por terras, desencadeada pelas crises agroalimentar, energética, climática e econômico-financeira. O objetivo deste artigo é analisar se os Estados Unidos estiveram na rota dessa corrida. Para tanto, examinamos dados do Departamento de Agricultura dos Estados Unidos (United States Department of Agriculture – USDA) e bibliografia especializada, e identificamos que a porção de terras em mãos estrangeiras dobrou entre 2004 e 2014.
Résultats de la recherche
Showing items 1 through 9 of 802.-
Library ResourceArticles et Livresjuillet, 2018Amérique septentrionale, États-Unis d'Amérique
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Library Resource
Her Work and its Contribution to the Theory and Practice of Conservation and Sustainable Natural Resource Management
Rapports et recherchesavril, 2014Érythrée, Kenya, Mexique, Canada, Mongolie, Inde, GlobalThis special issue of Policy Matters focuses on the outreach and impact of Dr. Elinor Ostrom's groundbreaking research on common property (or commons) theory. Her work was instrumental in shaping contemporary analyses of resource management and conservation, especially at a local level. This collection of research papers, essays, commentaries, and songs build upon her work and provide case studies demonstrating the practical application of her theoretical contributions.
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Library ResourceLégislation et politiquesmai, 2023Canada
These goals and targets are purposively (and appropriately) designed to work as an integrated whole, reflecting the same principle of indivisibility embodied in the UN Sustainable Development Goals. They require actions to be integrated across the whole of government and society.
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Library Resource
A Webinar Report
Rapports et recherchesseptembre, 2019Afrique, Kenya, Amérique latine et Caraïbes, États-Unis d'Amérique, Asie, GlobalThe climate crisis demands urgent action, yet we live in a politically polarized and paralyzed world. As governments and other actors struggle over climate change, our environment is irreversibly changing. A United Nations report on the Global Assessment of Biodiversity and Ecosystem Services revealed that three-quarters of the earth’s land-based environment has been significantly altered by human actions.
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Library ResourceArticles et Livresdécembre, 2008États-Unis d'Amérique
Baseflow and precipitation in the Kickapoo River Watershed, located in the Driftless Area of Wisconsin, exhibit a step increase around 1970, similar to minimum and median flows in many other central and eastern USA streams. Potential effects on streamflow due to climatic and land management changes were evaluated by comparing volumetric changes in the hydrologic budget before and after 1970. Increases in precipitation do not fully account for the increase in baseflow, which appears to be offset by a volumetric decrease in stormflow.
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Library ResourceArticles et Livresdécembre, 2013Indonésie, Bolivie, Tunisie, États-Unis d'Amérique, Espagne, Éthiopie
Since the 1930s there has been worldwide concern about the effects and impacts of land degradation. After the problems experienced in the Dust Bowl in the USA, much attention was paid to soil and water conservation in both developed and developing countries. Initially Governments stimulated the establishment of physical control measures, such as terraces, check dams and reforestation. This was achieved through top-down regulations, and Forestry Departments were often in charge of the implementation.
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Library ResourceArticles et Livresdécembre, 2015États-Unis d'Amérique
Climate change has the potential to influence avian population dynamics through nest-fate sensitivity to temperatures during the breeding season. Nest fate also varies across spatially heterogeneous habitat, and changing land uses may independently introduce stressors on reproductive outcome. Identifying the individual and synergistic effects of climate change and land-use change is necessary for understanding the impact of global change on native species. We studied the nest fate of 3 sympatric species breeding in urban habitat in an arid region of the western United States.
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Library ResourceArticles et Livresdécembre, 2011Amérique septentrionale
Experimental forests and ranges are living laboratories that provide opportunities for conducting scientific research and transferring research results to partners and stakeholders. They are invaluable for their long-term data and capacity to foster collaborative, interdisciplinary research. The San Joaquin Experimental Range (SJER) was established to develop appropriate land management practices on foothill rangelands in California. SJER has a long and rich history of avian research.
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Library ResourceArticles et Livresdécembre, 2003États-Unis d'Amérique
The Rocky Mountains of the western United States contain many economically important natural resources. Increasing development of these resources has lead to land degradation, which often requires restoration efforts. A common type of disturbance in this region is mineral extraction and these activities often occur in zones of vegetation dominated by shrubs. These mined lands have proven to be particularly challenging to restore to native shrub cover.
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Library ResourceArticles et Livresdécembre, 2016États-Unis d'Amérique
QUESTION: The decline and loss of perennial vegetation in dryland ecosystems due to global change pressures can alter ecosystem properties and initiate land degradation processes. We tracked changes of perennial vegetation using remote sensing to address the question of how prolonged drought and landâuse intensification have affected perennial vegetation cover across a desert region in the early 21st century? LOCATION: Mojave Desert, southeastern California, southern Nevada, southwestern Utah and northwestern Arizona, USA.
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