نتایج جستجو برای: habitat characteristics

تعداد نتایج: 709822  

2015
Kyle E. Coblentz Jessica R. Henkel Bryan J. Sigel Caz M. Taylor Linsheng Song

Benthic infaunal communities are important components of coastal ecosystems. Understanding the relationships between the structure of these communities and characteristics of the habitat in which they live is becoming progressively more important as coastal systems face increasing stress from anthropogenic impacts and changes in climate. To examine how sediment characteristics and infaunal comm...

2003
ALEXANDER V. BADYAEV ELIZABETH

Ai•sTRACT.--Bird-song functions, such as mate attraction, species recognition, and territory defense, are closely linked to individual fitness. Thus, habitat characteristics that affect song transmission and degradation should exert a strong influence on the evolution of song attributes. Whereas different acoustic environments may influence the evolution of song characteristics, factors such as...

2003
Paweł Kapusta Łukasz Sobczyk Anna Rożen January Weiner

Species diversity of enchytraeid communities was determined in soils of the Niepołomice Forest (southern Poland) in relation to habitat characteristics (forest type, soil chemistry: pH, organic matter content, moisture, mineral elements Ca, K, Na, N–NH4, N–NO3, Ntotal) and xenobiotics (Zn, Pb, Cu, Cd) and humus respiration rate. Altogether 30 enchytraeid species were identified, forming assembl...

Journal: :Environmental management 2009
Kirk W Davies Jonathan D Bates Dustin D Johnson Aleta M Nafus

Mowing is commonly implemented to Artemisia tridentata ssp. wyomingensis (Beetle & A. Young) S.L. Welsh (Wyoming big sagebrush) plant communities to improve wildlife habitat, increase forage production for livestock, and create fuel breaks for fire suppression. However, information detailing the influence of mowing on winter habitat for wildlife is lacking. This information is crucial because m...

Aioub Sofizadeh, Ali Mohammadnia, Ali Reza Pesaraklo, Berdi Eftekhari, Farhad Ajam, Mahmoud Yapang Gharavi, Morteza Farrokhi Balajadeh, Nader Sanad Gol,

Background & Objectives: Mosquitoes (Diptera: Culicidae) are medically considered as one of the most important species of insects in terms of disease transmission to human beings; hence, they can be vectors of remarkable diseases such as malaria, West Nile, dengue fever, yellow fever, and filariasis. This study aimed to determine the species diversity and larval habitat characteristics of mosqu...

Journal: :محیط زیست طبیعی 0
حسین وارسته مرادی استادیار دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران

the evaluation of ecological characteristics of wildlife species has fundamental role in species management, because taking a decision for proper method of management is only possible by characterizing of ecological requirements of a species. in this study, suitable habitat of middle spotted woodpecker was investigated in golestan national park. presence and absence of birds and environmental v...

Journal: :Journal of the American Mosquito Control Association 1987
J L Callahan C D Morris

Habitat characteristics were examined in two marshes and the littoral zones of two lakes in central Florida to determine their effect on the density and distribution of Coquillettidia perturbans. Larval and water samples were collected and habitat characteristics were recorded at monthly intervals for one year. Several significantly different physicochemical parameters were found between the ma...

Journal: :Environmental Modelling and Software 2015
Paolo Vezza Rafael Muñoz-Mas Francisco Martínez-Capel Ans M. Mouton

Previous research indicated that high predictive performance in species distribution modelling can be obtained by combining both biotic and abiotic habitat variables. However, models developed for fish often only address physical habitat characteristics, thus omitting potentially important biotic factors. Therefore, we assessed the impact of biotic variables on fish habitat preferences in four ...

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