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

تعداد نتایج: 12041691  

Ahmad Pahlavanravi Einollah Rouhi Moghaddam, Khalil Amoozadeh

Objective: The aim of this study is to provide a management plan for the Sykan watershed of Darre shahr city located in Ilam province using GIS in land use planning. Methods: For land using of Sykan watershed of Ilam province with about 9 hectares area, map of classes, elevation, percent slope, geographical aspects, soil characteristics, vegetation density and the final map units were combined ...

2013
Theresa M. Nogeire Frank W. Davis Jennifer M. Duggan Kevin R. Crooks Erin E. Boydston

Wide-ranging species cannot persist in reserves alone. Consequently, there is growing interest in the conservation value of agricultural lands that separate or buffer natural areas. The value of agricultural lands for wildlife habitat and connectivity varies as a function of the crop type and landscape context, and quantifying these differences will improve our ability to manage these lands mor...

Ahmad Pahlavanravi Einollah Rouhi Moghaddam, Khalil Amoozadeh

Objective: The aim of this study is to provide a management plan for the Sykan watershed of Darre shahr city located in Ilam province using GIS in land use planning. Methods: For land using of Sykan watershed of Ilam province with about 9 hectares area, map of classes, elevation, percent slope, geographical aspects, soil characteristics, vegetation density and the final map units were combined ...

2015
Robert F. Baldwin Paul B. Leonard Chris T. Bauch

Conservation decisions should be evaluated for how they meet conservation goals at multiple spatial extents. Conservation easements are land use decisions resulting from a combination of social and environmental conditions. An emerging area of research is the evaluation of spatial distribution of easements and their spatial correlates. We tested the relative influence of interacting social and ...

Journal: :international journal of advanced biological and biomedical research 2014
khalil amoozadeh einollah rouhi moghaddam ahmad pahlavanravi

objective: the aim of this study is to provide a management plan for the sykan watershed of darre shahr city located in ilam province using gis in land use planning. methods: for land using of sykan watershed of ilam province with about 9 hectares area, map of classes, elevation, percent slope, geographical aspects, soil characteristics, vegetation density and the final map units were combined ...

2013
Cynthia Donovan

Agricultural productivity levels depend on the adoption of (improved) agricultural technologies, among other aspects. However, the use of improved technologies in Mozambique is still very limited. Data from the National Agricultural Survey of 2012, known as Inquérito Agrícola Integrado, show that less than 3% of smallholder farmers used inorganic fertilizers, 6% used pesticides, 9% used improve...

2003
Sanjay Pyare Joel Berger

This paper addresses the question, when are threatened or endangered species really recovered? The US Endangered Species Act enables the de-listing of species once demographic criteria are met. In the Greater Yellowstone ecosystem, two protected apex carnivores, grizzly bears (Ursus arctos) and wolves (Canis lupus), face removal from federal government protection due to population increases, a ...

2016
Martin Leclerc Joanie Van de Walle Andreas Zedrosser Jon E Swenson Fanie Pelletier

Quantifying temporal changes in harvested populations is critical for applied and fundamental research. Unbiased data are required to detect true changes in phenotypic distribution or population size. Because of the difficulty of collecting detailed individual data from wild populations, data from hunting records are often used. Hunting records, however, may not represent a random sample of a p...

Journal: :Bone 2009
Meghan E McGee-Lawrence Samantha J Wojda Lindsay N Barlow Thomas D Drummer Alesha B Castillo Oran Kennedy Keith W Condon Janene Auger Hal L Black O Lynne Nelson Charles T Robbins Seth W Donahue

Disuse typically causes an imbalance in bone formation and bone resorption, leading to losses of cortical and trabecular bone. In contrast, bears maintain balanced intracortical remodeling and prevent cortical bone loss during disuse (hibernation). Trabecular bone, however, is more detrimentally affected than cortical bone in other animal models of disuse. Here we investigated the effects of hi...

2004
PHILIP D. McLOUGHLIN MITCHELL K. TAYLOR H. DEAN CLUFF ROBERT J. GAU ROBERT MULDERS FRANÇOIS MESSIER

We modelled probabilities of population decline as a function of annual kill for a population of barren-ground grizzly bears (Ursus arctos) inhabiting Nunavut and the Northwest Territories, Canada. Our results suggest that the population is at risk of decline, especially if annual removal rates increase from the 42-year mean of 13.4 bears per year. Adding six bears to the mean annual kill resul...

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