نتایج جستجو برای: habitat evaluation

تعداد نتایج: 876723  

توحیدی, محبوبه, ملکی, سعیده, همامی, محمودرضا, پاک نیت, داود,

Predicting species’ distribution is a prerequsit for assessing threats, determining conservation status, and planning conservation programs. Asian houbara Chlamydotis macqueenii is one of the most valuable game species threatened by extinction. We estimated the distribution of potential suitable habitats of wintering populations of Asian houbara bustard in central Iranian plateau using maximum ...

ژورنال: بوم شناسی آبزیان 2014
Zamani Faradonbeh, Mazaher , Eagderi, Soheil , Hashemzadeh Segherloo, Iraj , Tabatabaei, Seyedeh Narjes,

Considering the fact that fish biodiversity conservation and land uses planning, require reliable information about fish distribution and habitat use patterns In order to describe species habitat properties, habitat use and habitat selectivity indices are applied. Relative frequency and environmental variables, depth, width, slope of river, altitude, velocity, substrate, Overstream canopy closu...

2002
Susan D. Crissey

The essence of nutritional assessment is to determine the adequacy of the diet so that risk of disease might be limited and productivity and longevity might be enhanced. Knowledge of nutritional status, whether of an individual or of an animal population, is important for evaluation of captive management or quality of the wild habitat. This technical paper reviews some of the techniques for ass...

2004
Khaled A. S. Al-Rasheid

Sediment samples were collected at low tide from various localities of Jubail Marine Wildlife Sanctuary in the Arabian Gulf during 1996-1997 for the study of the marine interstitial ciliate fauna of the Sanctuary. Eleven species belonging to the genus Frontonia (Order: Hymenostomatida) were identified, 7 of which represent new records of the fauna of the Arabian Gulf and of Saudi Arabia. The di...

2011
Stephen Phillips John Callaghan

The primary aim of the National Koala Conservation and Management Strategy 2009 – 2014 (NKCMS) is to conserve the Koala (Phascolarctos cinereus) by retaining viable populations in the wild throughout the species’ natural range (Natural Resource Management Ministerial Council (NRMMC) 2009). In order to assist this aim, Action 1.06 of the NKCMS promotes the need for development of standard monito...

2005
D. CRAIG

Red-cockaded woodpecker populations declined precipitously following European settlement and expansion and cutting of the original pine forests across the southeastern United States. By 1990 most residual populations lacked demographic viability, existed in degraded habitat, and were isolated from other populations. The primary causes of this situation were harvest of the original pine forests ...

2006
Lincoln Freese Bruce L. Wing

Short-term effects of bottom trawling on a 'hard-bottom' (pebble, cobble, and boulder) seafloor were studied on the outer continental shelf in the eastern Gulf of Alaska. Eight sites were trawled in August 1996; then, from a research submersible we videotaped each trawl path and a nearby reference transect to obtain quantitative data. Boulders were displaced, and large epifaunal invertebrates w...

2006
Edward L. BOONE Eric P. SMITH

Understanding the relationship between an index of biological community state and habitat is important for policy makers and environmental managers. A common approach to modeling this relationship is to use regression. However, this simple method becomes complicated when the data are clustered and have both within-cluster and between-cluster spatial correlation. This article proposes a Bayesian...

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