نتایج جستجو برای: 2012 agricultural lands as ecological traps for grizzly bears animal conservation 15

تعداد نتایج: 12041691  

Journal: :Journal of Political Ecology 2023

For many Indigenous communities in North America, the grizzly bear is a symbol associated with tribal medicine, spirituality, history, and knowledge. Despite its cultural importance to also federal trust responsibilities, Peoples are rarely consulted conservation decision-making concerning bears, emotional outcomes of these decisions poorly understood. In 2017 bears were removed from protection...

Journal: :تولید گیاهان زراعی 0
حسین کاظمی استادیار گروه زراعت دانشگاه علوم کشاورزی و منابع طبیعی گرگان

this research was conducted to zoning of gorgan agricultural lands for hulless barley cropping using evaluation of some environmental factors base on boolean logic and by geographic information system. for this purpose, agro-ecological requirements of hulless barley firstly, identified according to scientific resources. rating and thematic requirement maps were then provided. studied environmen...

2016
Frederick Kirschenmann Ryan Isakson M Jahi Chappell Hannah Wittman Christopher M Bacon Luis García Barrios Daniel Jaffee Helda Morales Lorena Soto-Pinto John Vandermeer Ivette Perfecto

Strong feedback between global biodiversity loss and persistent, extreme rural poverty are major challenges in the face of concurrent food, energy, and environmental crises. This paper examines the role of industrial agricultural intensification and market integration as exogenous socio-ecological drivers of biodiversity loss and poverty traps in Latin America. We then analyze the potential of ...

2013
M Jahi Chappell Hannah Wittman Christopher M Bacon Bruce G Ferguson Luis García Barrios Raúl García Barrios Daniel Jaffee Jefferson Lima V Ernesto Méndez Helda Morales Lorena Soto-Pinto John Vandermeer Ivette Perfecto Ryan Isakson Frederick Kirschenmann

Strong feedback between global biodiversity loss and persistent, extreme rural poverty are major challenges in the face of concurrent food, energy, and environmental crises. This paper examines the role of industrial agricultural intensification and market integration as exogenous socio-ecological drivers of biodiversity loss and poverty traps in Latin America. We then analyze the potential of ...

2011
MICHAEL F. PROCTOR

Population fragmentation compromises population viability, reduces a species ability to respond to climate change, and ultimately may reduce biodiversity. We studied the current state and potential causes of fragmentation in grizzly bears over approximately 1,000,000 km of western Canada, the northern United States (US), and southeast Alaska. We compiled much of our data from projects undertake...

2012
SHARI L. RODRIGUEZ

More than 75% of endangered species in the United States rely on private lands for habitat. Although this habitat has long been regulated under the Endangered Species Act, there is now broad agreement that economic incentives are also needed for effective protection on private land. Many different mechanisms for incentive programs have been proposed and tested. For example, recovery credit syst...

2013
Jocelyn L. Aycrigg Anne Davidson Leona K. Svancara Kevin J. Gergely Alexa McKerrow J. Michael Scott

If conservation of biodiversity is the goal, then the protected areas network of the continental US may be one of our best conservation tools for safeguarding ecological systems (i.e., vegetation communities). We evaluated representation of ecological systems in the current protected areas network and found insufficient representation at three vegetation community levels within lower elevations...

2016
F Richard Hauer Harvey Locke Victoria J Dreitz Mark Hebblewhite Winsor H Lowe Clint C Muhlfeld Cara R Nelson Michael F Proctor Stewart B Rood

Gravel-bed river floodplains in mountain landscapes disproportionately concentrate diverse habitats, nutrient cycling, productivity of biota, and species interactions. Although stream ecologists know that river channel and floodplain habitats used by aquatic organisms are maintained by hydrologic regimes that mobilize gravel-bed sediments, terrestrial ecologists have largely been unaware of the...

Journal: :Environmental management 2010
Rong Mao De-Hui Zeng

Afforestation of agricultural lands has been one of the major land use changes in China in recent decades. To better understand the effect of such land use change on soil quality, we investigated selected soil physical, chemical and microbial properties (0-15 cm depth) in marginal agricultural land and a chronosequence of poplar (Populus euramericana cv. 'N3016') plantations (5-, 10-, 15- and 2...

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