نتایج جستجو برای: waterbirds habitat suitability

تعداد نتایج: 82694  

Journal: :caspian journal of environmental sciences 2013
j. sarhangzadeh a.r. yavari m.r. hemami h.r. jafari b. shams-esfandabad

wild goat (capra aegagrus) is one of the most prominent mountain mammals dispersed in many habitats in iran. however, few studies on the relationship between this species and its habitat have been conducted. this species is recognized as one of the main food source for highly endangered species such as cheetah and leopard. in this study which lasted from fall 2009 through summer 2011, seasonal ...

Journal: :Marine pollution bulletin 2010
N H K Burton A J Musgrove M M Rehfisch N A Clark

The Severn Estuary and Bristol Channel encompass a number of designated sites supporting populations of waterbirds and seabirds that are of national or international importance, including the Severn Estuary and Burry Inlet Special Protection Areas (SPAs)/Ramsar Sites and Carmarthen Bay, the UK's first marine SPA. Here, we provide an overview of the present numbers and trends of the waterbirds a...

2015
Chunlin Li Lizhi Zhou Li Xu Niannian Zhao Guy Beauchamp

Due to loss and degradation of natural wetlands, waterbirds increasingly rely on surrounding human-dominated habitats to obtain food. Quantifying vigilance patterns, investigating the trade-off among various activities, and examining the underlying mechanisms will help us understand how waterbirds adapt to human-caused disturbances. During two successive winters (November-February of 2012-13 an...

رنگزن, کاظم, عبیداوی, زینب, میرزایی, روح‌اله, کابلی‌زاده, مصطفی,

Status determination of wildlife habitats is very important in conservation programs and management of wildlife. So, in this study Ursus arctos habitat suitability was modeled using maximum entropy algorithm (MaxEnt) in Shimbar protected area. In order to model the habitat suitability, after investigating and resolving the spatial autocorrelation of occurrence records, spatially independent loc...

Journal: :محیط زیست طبیعی 0
رضا گل جانی گروه تنوع زیستی و زیستگاه ها، دانشکده محیط زیست و انرژی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران محمد کابلی استادیار دانشکده منابع طبیعی، دانشگاه تهران، ایران محمود کرمی استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران بابک نعیمی مربی دانشکده انرژی و محیط زیست، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، ایران افشین علیزاده شعبانی استادیار دانشکده منابع طبیعی، دانشگاه تهران، ایران

jajrood protected complex (khojir and sorkheh hesar national parks and jajrood protected area) is one of the most important habitats of central alborz wild sheep (ovis gmelini x o. vignei) in iran. since the species mate in fall, then fall home range has critical rule in life cycle of this species. using the ecological niche factor analysis (enfa), effective factors on the presence of species w...

2015
Yu-Pin Lin Wei-Chih Lin Wei-Yao Wu

Species distribution models (SDMs) are extensively used to project habitat suitability of species in stream ecological studies. Owing to complex sources of uncertainty, such models may yield projections with varying degrees of uncertainty. To better understand projected spatial distributions and the variability between habitat suitability projections, this study uses five SDMs that are based on...

رضایی, حمیدرضا, وارسته‌مرادی, حسین, کریمی, سرور,

  Investigation of the ecological characteristics of wildlife species and determination of habitat suitability for them is one of the main pillars for wildlife management and protection. In this study, the winter and spring habitat suitability of black woodpecker (Dryocopusmartius) was studied in ShastKalateh forest. Habitat characteristics, including forest vegetationtype, structural character...

2014
SERENA CEOLA ALESSIO PUGLIESE

In this study we propose a novel method for the estimation of ecological indices describing the habitat suitability of brown trout (Salmo trutta). Traditional hydrological tools are coupled with an innovative regional geostatistical technique, aiming at the prediction of the brown trout habitat suitability index where partial or totally ungauged conditions occur. Several methods for the assessm...

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