نتایج جستجو برای: waterbirds habitat suitability

تعداد نتایج: 82694  

Adequate knowledge about suitable habitats for wildlife is essential to prevent habitat destruction and extinction of species and for their conservation and management. The Eurasian lynx is one of the mostly distributed cats in Asia. In this study, we applied an ensemble habitat suitability modeling approach, using ten predictor variables to model Eurasian Lynx’s habitat suitability in Saveh Za...

2017
Mark D Reynolds Brian L Sullivan Eric Hallstein Sandra Matsumoto Steve Kelling Matthew Merrifield Daniel Fink Alison Johnston Wesley M Hochachka Nicholas E Bruns Matthew E Reiter Sam Veloz Catherine Hickey Nathan Elliott Leslie Martin John W Fitzpatrick Paul Spraycar Gregory H Golet Christopher McColl Scott A Morrison

In an era of unprecedented and rapid global change, dynamic conservation strategies that tailor the delivery of habitat to when and where it is most needed can be critical for the persistence of species, especially those with diverse and dispersed habitat requirements. We demonstrate the effectiveness of such a strategy for migratory waterbirds. We analyzed citizen science and satellite data to...

Journal: :Journal of environmental management 2008
Rebecca A Efroymson Mark J Peterson Neil R Giffen Michael G Ryon John G Smith William W Hargrove W Kelly Roy Christopher J Welsh Daniel L Druckenbrod Harry D Quarles

Habitat valuation methods were implemented to support remedial decisions for aquatic and terrestrial contaminated sites at the East Tennessee Technology Park (ETTP) on the US Department of Energy (DOE) Oak Ridge Reservation in Oak Ridge, TN, USA. The habitat valuation was undertaken for six contaminated sites: Contractor's Spoil Area, K-901-N Disposal Area, K-770 Scrapyard, K-1007-P1 pond, K-90...

Journal: :international journal of environmental research 2014
w. yao p. rutschmann s. bamal

quantification of the habitat available for fish species named rainbow trout (oncorhynchusmykiss) were evaluated in lees ferry, colorado river using water depth, water temperature, sediment transport,flow velocity in 2004 as environmental index. for the flow velocity and temperature distribution calculationsin the river, the navier-stokes equation and energy conservation equations with finite v...

2006
Gage H. Dayton Lee A. Fitzgerald

A fundamental step in conserving biodiversity is identification of quality habitat needed to sustain populations of target species. We used coarse scale environmental features (soil water holding capacity, soil texture, slope, elevation, and proximity to drainage channels) to predict habitat suitability for four species of desert amphibians in Big Bend National Park, USA: Scaphiopus couchii, Bu...

Journal: :اکو هیدرولوژی 0
مهدی صدیق کیا . دانشجوی دکتری سازه‏های آبی، دانشگاه تربیت مدرس، تهران سید علی ایوب زاده دانشیار گروه سازه‏های آبی، دانشگاه تربیت مدرس، تهران محبوبه حاجی اسماعیلی کارشناس ارشد سازه‏های آبی، دانشگاه تربیت مدرس، تهران

in the present research necessities of instream flow needs (ifn) assessment in the rivers with focusing on delichai river as case study is investigated using the hydro-ecological methods. at first, ifn is assessed using two common approaches of the tennant and wetted perimeter. then considering that rainbow trout is the most important and dominant species in this river, ecological condition of ...

Journal: :caspian journal of enviromental sciences 0

knowledge of habitat requirements of aquatic animals plays an important role in fisheries and protection programs of aquatic ecosystems. hence, this study was conducted to investigate the suitability indexes of habitat use and habitat suitability index (hsi) of barbus cyri in its distribution range in tootkabon river. a number of environmental variables, including elevation, water depth, river ...

2003
Ron Store Jukka Jokimäki

The aim of this study is to develop a method by means of which it is possible to produce georeferenced ecological information about the habitat requirements of different species. The integrated habitat suitability index approach includes the steps of constructing habitat suitability models, producing data needed in models, evaluating of target areas based on habitat factors, and combining vario...

Journal: :Biology letters 2010
Wilfried Thuiller Cécile H Albert Anne Dubuis Christophe Randin Antoine Guisan

Habitat suitability models, which relate species occurrences to environmental variables, are assumed to predict suitable conditions for a given species. If these models are reliable, they should relate to change in plant growth and function. In this paper, we ask the question whether habitat suitability models are able to predict variation in plant functional traits, often assumed to be a good ...

Journal: :Remote Sensing 2016
Samuel M. Jantz Lilian Pintea Janet Nackoney Matthew C. Hansen

All four chimpanzee sub-species populations are declining due to multiple factors including human-caused habitat loss. Effective conservation efforts are therefore needed to ensure their long-term survival. Habitat suitability models serve as useful tools for conservation planning by depicting relative environmental suitability in geographic space over time. Previous studies mapping chimpanzee ...

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