نتایج جستجو برای: habitat variables

تعداد نتایج: 364517  

2017
Minerva Singh Timo Tokola Zhengyang Hou Claudia Notarnicola

Avian species persistence in a forest patch is strongly related to the degree of isolation and size of a forest patch and the vegetation structure within a patch and its matrix are important predictors of bird habitat suitability. A combination of space-borne optical (Landsat), ALOS-PALSAR (radar), and airborne Light Detection and Ranging (LiDAR) data was used for assessing variation in forest ...

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Journal: :Ecological applications : a publication of the Ecological Society of America 2006
Matthew G Betts Graham J Forbes Antony W Diamond Philip D Taylor

The degree to which spatial patterns influence the dynamics and distribution of populations is a central question in ecology. This question is even more pressing in the context of rapid habitat loss and fragmentation, which threaten global biodiversity. However, the relative influence of habitat loss and landscape fragmentation, the spatial patterning of remaining habitat, remains unclear. If l...

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2012
Lesley H. Thorne David W. Johnston Dean L. Urban Julian Tyne Lars Bejder Robin W. Baird Suzanne Yin Susan H. Rickards Mark H. Deakos Joseph R. Mobley Adam A. Pack Marie Chapla Hill

Predictive habitat models can provide critical information that is necessary in many conservation applications. Using Maximum Entropy modeling, we characterized habitat relationships and generated spatial predictions of spinner dolphin (Stenella longirostris) resting habitat in the main Hawaiian Islands. Spinner dolphins in Hawai'i exhibit predictable daily movements, using inshore bays as rest...

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ژورنال: بوم شناسی آبزیان 2023
, , قانع, احمد,

Four sampling sites were selected in different parts of the Anzali wetland watershed to predict the habitat preferences of the river prawn (Macrobrachium nipponens). A set of abiotic variables together with the abundance of the species were monthly measured at each sampling location during the 1- year study period (2017-2018). The results of Mann-Whitney test (given the non-normal data) showed ...

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Journal: :Journal of Plant Ecology 2016

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Journal: :PROCEEDINGS OF HYDRAULIC ENGINEERING 1996

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Journal: :Global Ecology and Conservation 2020

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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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Journal: :محیط زیست طبیعی 0
محمود کرمی استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران محمد دهدار درگاهی عضو هیئت علمی دانشگاه آزاد اسلامی واحد لاهیجان، ایران منا حمزه پور کارشناس ارشد علوم محیط زیست، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران، ایران

up to now, there is no habitat suitability index model for common otter in iran. this species is an index species for clean ecosystems and consequently, an important animal. model prepared, considering dependent variables to show vital needs for this animal in the shenrood river located in the deylaman-dorfak prohibited hunting area in iran. hep method was applied and important factors were sel...

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ژورنال: حفاظت زیست بوم گیاهان 2022
Esmaeilpour, Yahya, Farashi, Azita, Gholami, Hamid, momeni damaneh, Javad,

Astracantha gossypina (Fisch.) is one of the most important rangeland plants in the northeastern region of Iran and has a great role in soil conservation and the economy of ranchers. unreasonable uses and management of desire plant species usually led to species loss and the replacement of endemic and specialist species by invasive endemic or exotic species. This study was conducted to determin...

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