نتایج جستجو برای: human habitat

تعداد نتایج: 1688234  

2013
Matthew A. Simon

Radiation protection is an important habitat design consideration for human exploration missions beyond Low Earth Orbit. Fortunately, radiation shelter concepts can effectively reduce astronaut exposure for the relatively low proton energies of solar particle events, enabling moderate duration missions of several months before astronaut exposure (galactic cosmic ray and solar particle event) ap...

Journal: :Int. J. Applied Earth Observation and Geoinformation 2015
Paola Mairota Barbara Cafarelli Rocco Labadessa Francesco P. Lovergine Cristina Tarantino Harini Nagendra Raphael K. Didham

Modelling the empirical relationships between habitat quality and species distribution patterns is the first step to understanding human impacts on biodiversity. It is important to build on this understanding to develop a broader conceptual appreciation of the influence of surrounding landscape structure on local habitat quality, across multiple spatial scales. Traditional models which report t...

2011
Lado KUTNAR Dragan MATIJAŠIĆ Rok PISEK

An example of the possible use of selected forest-stand based indicators for evaluation of conservation status was shown in case of the Natura 2000 forest habitats of Slovenia, and the potential threats to habitat types were identified. Using the existing forest-management system, and two levels of ICP Forests monitoring as sources of data on the size of habitat, tree composition, developmental...

2011
Matthew R. Dzialak Chad V. Olson Seth M. Harju Stephen L. Webb James P. Mudd Jeffrey B. Winstead L.D. Hayden-Wing

BACKGROUND Balancing animal conservation and human use of the landscape is an ongoing scientific and practical challenge throughout the world. We investigated reproductive success in female greater sage-grouse (Centrocercus urophasianus) relative to seasonal patterns of resource selection, with the larger goal of developing a spatially-explicit framework for managing human activity and sage-gro...

2013
Joanna Burger Michael Gochfeld Charles W. Powers Lawrence Niles Robert Zappalorti Jeremy Feinberg James Clarke

Vertebrates have particular habitat needs as a function of life cycle and reproductive stage. This paper uses four species as examples to illustrate a paradigm of environmental assessment that includes physical, biological, toxicological and human dimensions. Species used include Chinook salmon (Oncorhynchus tshawytscha), northern leopard frog (Rana pipiens), northern pine snake (Pituophis m. m...

2017
Sean M Murphy Ben C Augustine Wade A Ulrey Joseph M Guthrie Brian K Scheick J Walter McCown John J Cox

Loss and fragmentation of natural habitats caused by human land uses have subdivided several formerly contiguous large carnivore populations into multiple small and often isolated subpopulations, which can reduce genetic variation and lead to precipitous population declines. Substantial habitat loss and fragmentation from urban development and agriculture expansion relegated the Highlands-Glade...

2017
Jessica J. Taylor Trina Rytwinski Joseph R. Bennett Karen E. Smokorowski Steven J. Cooke

Background: Habitat is the foundation for healthy and productive fisheries. For substrate spawning fish, lack of appropriate spawning substrate is inherently limiting and a lack of access to suitable spawning habitat will lead to population collapse. When specific properties of a habitat (e.g., temperature, depth, vegetation composition) are matched to the species’ ecological niche, a spawning ...

2010
Marco Kaiser Anna Löwa Markus Ulrich Heinz Ellerbrok Adeelia S. Goffe Anja Blasse Zinta Zommers Emmanuel Couacy-Hymann Fred Babweteera Klaus Zuberbühler Sonja Metzger Sebastian Geidel Christophe Boesch Thomas R. Gillespie Fabian H. Leendertz

Data are missing on the diversity of Plasmodium spp. infecting apes that live in their natural habitat, with limited possibility of human-mosquito-ape exchange. We surveyed Plasmodium spp. diversity in wild chimpanzees living in an undisturbed tropical rainforest habitat and found 5 species: P. malariae, P. vivax, P. ovale, P. reichenowi, and P. gaboni.

2013
Kristine J. Teichman Bogdan Cristescu Scott E. Nielsen

Wildlife-human conflicts occur wherever large carnivores overlap human inhabited areas. Conflict mitigation can be facilitated by understanding long-term dynamics and examining sex-structured conflict patterns. Predicting areas with high probability of conflict helps focus management strategies in order to proactively decrease carnivore mortality. We investigated the importance of cougar (Puma ...

Journal: :Emerging Infectious Diseases 2008
Valerie St-Amour Wai M. Wong Trenton W.J. Garner David Lesbarrères

To the Editor: Although the relationship between the emergence of zoonotic diseases and human infl u-enced landscapes is accepted (1–3), the relationship between human-in-fl uenced landscapes and wildlife disease is less so. Evidence does support correlations between human activities and environmental conditions affecting wildlife disease emergence (2,3). These studies assume relationships betw...

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