نتایج جستجو برای: habitat type

تعداد نتایج: 1390672  

2007
ALEXANDRA B. FELIX

Ecologically based management must incorporate components that consider how individuals associate temporally and spatially to environments that provide specific habitat requirements. Recent research has assessed how environments could be classified based on potential to provide deer (Odocoileus virginianus) habitat components. If habitat potential (HP; i.e., capability of habitat types to provi...

2006
Alison L. Green

The continuous reef tract on the semi-exposed side of Lizard Island, northern Great Barrier Reef, can be divided into 6 habitat zones, which are distinctly different in terms of their physical (depth, slope and wave exposure) and biological characteristics (percentage of living cover, percentage cover of each substratum type, substratum diversity and complexity). Sixty-four labrid species were ...

2008
Linnea S. Hall Paul R. Krausman Michael L. Morrison

We compared the uses and definitions of habitat-related terms in 50 articles from 1980 to 1994 to operational definitions we derived from the literature. Only 9 (18%) of the articles we reviewed defined and used habitat-related terms consistently and according to our definitions of the terms. Forty-seven articles used the term "habitat;" however, it was only defined and used consistent with our...

خلیلی, فرزانه, روجائی, نعمت‌ اله, ملکیان, منصوره, همامی, محمودرضا,

The current study used habitat suitability index to evaluate habitat suitability of Servak forested area located near Yasouj for the Persian squirrel. Habitat variables including elevation, slope, aspect, density of vegetation cover, height of tree, tree diameter, canopy area of tree, distance to roads, distance to villages, and distance to rivers were used in this evaluation. Results showed th...

2017
Connor M Wood Shawn T McKinney Cynthia S Loftin

Common species are fundamental to the structure and function of their communities and may enhance community stability through intraspecific functional diversity (iFD). We measured among-habitat and within-habitat iFD (i.e., among- and within-plant community types) of two common small mammal species using stable isotopes and functional trait dendrograms, determined whether iFD was related to sho...

2007
Adrienne L. Pappal Daniel G. MacDonald Rodney A. Rountree

Juvenile winter flounder utilize a wide variety of habitats, including those that are structurally complex. We investigated the habitat preferences of age-0 winter flounder in sand and cobble of varying complexity in the laboratory. Fish were observed every half hour for six hours in tanks with four cobble treatments; bare sand, sand with low complexity cobble, sand with intermediate complexity...

Journal: :Biology letters 2010
D E Chamberlain A Joys P J Johnson L Norton R E Feber R J Fuller

The generally higher biodiversity on organic farms may be influenced by management features such as no synthetic pesticide and fertilizer inputs and/or by differences in uncropped habitat at the site and landscape scale. We analysed bird and habitat data collected on 48 paired organic and conventional farms over two winters to determine the extent to which broad-scale habitat differences betwee...

2012
Mhairi E. Alexander Jaimie T. A. Dick Nessa E. O’Connor Neal R. Haddaway Keith D. Farnsworth

The influence of predation in structuring ecological communities can be informed by examining the shape and magnitude of the functional response of predators towards prey. We derived functional responses of the ubiquitous intertidal amphipod Echinogammarus marinus towards one of its preferred prey species, the isopod Jaera nordmanni. First, we examined the form of the functional response where ...

2015
S. Dalesman A. Rendle S.R.X. Dall

Habitat stability and predation pressure are thought to be major drivers in the evolutionary maintenance of behavioural syndromes, with trait covariance only occurring within specific habitats. However, animals also exhibit behavioural plasticity, often through memory formation. Memory formation across traits may be linked, with covariance in memory traits (memory syndromes) selected under part...

Journal: :Molecular ecology 2009
Ian J Wang Wesley K Savage H Bradley Shaffer

A major goal of landscape genetics is to understand how landscapes structure genetic variation in natural populations. However, landscape genetics still lacks a framework for quantifying the effects of landscape features, such as habitat type, on realized gene flow. Here, we present a methodology for identifying the costs of dispersal through different habitats for the California tiger salamand...

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