نتایج جستجو برای: habitat change
تعداد نتایج: 639317 فیلتر نتایج به سال:
Climate change is currently considered a serious threat for many species and recognized as one of the most important factors in the global biodiversity loss. Among animal groups, amphibians are known to be among the most sensitive groups of vertebrates to climate change due to their inability to travel long distances, and mountain habitat species are more exposed to climate change pressures tha...
Background and objectives: Climate change has been a serious issue in the last two decades and many studies have focused on its various aspects. Therefore, it is necessary to determine the future habitat of rangeland species present and future years, under climate warning models. In this regard, it should be investigated whether the increase in temperature will have a positive effect on the pre...
reserches show that relationship between human and residential places is based upo both emotional and identity structures. in other words, habitat place is not only the creator of a part of humanistic identity but also form a kind of sentimental and emotional bond that may result in tendency to maintain closeness to a specific place. therefor, formaton of emotional and identity relationship wit...
Coastal geomorphic systems provide many services of key importance to humankind, including protection from flood and erosion hazards, diverse habitats and amenity values (Agardy et al., 2005; Jones et al., 2011). However, these systems are widely undergoing degradation that can be substantially attributed to the cumulative direct and indirect effects of human interference. Declining sediment in...
* This value represents an average weighted score of the environmental issues associated to the concern. ** This value represents the overall score including environmental, socio-economic and likely future impacts. *** Priority refers to the ranking of GIWA concerns. Sea of Okhotsk This section presents the results of the assessment of the impacts of each of the fi ve predefi ned GIWA concerns ...
this study was conducted in dez and karkheh regions in southwestern iran to model habitatsuitability of the persian fallow deer dama dama mesopotamicus and assessing trend of habitat changes since1989. a total of 22 confirmed presence records of the species were collected from 1988 to 2003. maxentapproach was used to develop habitat suitability model with regards to nine environmental variables...
Development of roads through protected areas and ecological sensitive regions can have catastrophic effects on wildlife. In Iran, road construction in sensitive habitats and protected areas has been expanding during the past decades. This study focuses on the ecological impacts of Isfahan’s west ringway, which passes through Ghamishloo wildlife refuge, I.U.C.N category IV, in Isfahan Province. ...
Continual access to precise information about the land use/land cover (LULC) changes of the Earth’s surface is extremely important for any sustainable development program in which LULC serves as one of the major input criteria. In this study, a supervised classification was applied to three Landsat images collected in 1986, 1998and 2018, providing mangrove forests change data in the coastal are...
Broad-scale destruction and fragmentation of native vegetation is a highly visible result of human land-use throughout the world (Chapter 4). From the Atlantic Forests of South America to the tropical forests of Southeast Asia, and in many other regions on Earth, much of the original vegetation now remains only as fragments amidst expanses of land committed to feeding and housing human beings. ...
Climate change has a great impact on the species distribution range and many endangered plant species. Fritillaria imperialis as a species that is native to Central Zagros, Iran is a medicinal plant with great ecological and commercial profits. Its population has decreased considerably and the species would be endangered in later decades. Understanding the habitat needs of this species, evaluat...
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