نتایج جستجو برای: wetland environmental quality

تعداد نتایج: 1098932  

Journal: :Ecological Informatics 2014
Peng Dou Baoshan Cui

a r t i c l e i n f o The increasing fragmentation and degradation tendency of estuarine wetlands due to rapid urbanization in coastal areas exert the urgent need to quantify the structural characteristic of wetland network, which involves the fragmentized wetland patches for wetland restoration and conservation. Although wetland networks have already been used for conservation planning on a re...

2015
James M. Beerens Erik G. Noonburg Dale E. Gawlik Chang-Qing Gao

Species distribution models (SDM) link species occurrence with a suite of environmental predictors and provide an estimate of habitat quality when the variable set captures the biological requirements of the species. SDMs are inherently more complex when they include components of a species' ecology such as conspecific attraction and behavioral flexibility to exploit resources that vary across ...

2008
W. Wei X. Zhang X. Chen J. Tang M. Jiang

A lot of wetlands exist in the Yellow River Delta area, Shandong China and exhibit significance for the delta ecological environmental evolution and animal habitat protection. It is important for wetland protection and management to accurately map the wetland distribution by remote sensing due to the fact that the estuary area changes very fast. This study tries to combine subpixel analysis of ...

ژورنال: بهداشت و توسعه 2019
Fallah, Maryam , Hedayati, Seyed Aliakbar, Pirali Zefrehei, Ahmadreza ,

Background: Todays, water resources are affected by various factors such as organic materials, pathogens (bacterial and microbial agents), and minerals (including heavy metals). For this reason, continuously examining the spatiotemporal changes in environmental pollutants is one of the most critical components of water quality studies.      Methods: The sampling of some heavy metals (Ni, Cd, Z...

Journal: :محیط زیست طبیعی 0
علی لطفی استادیار دانشکدة منابع طبیعی، دانشگاه صنعتی اصفهان سید مهدی حشمت الواعظین استادیار دانشکدة منابع طبیعی، دانشگاه تهران محمدرضا گیلی استادیار دانشکدة منابع طبیعی، دانشگاه ملایر آزاده کاظمی دانشجوی دکتری دانشکده محیط زیست، دانشگاه تهران

external costs of environmental degradation are often ignored in economic analysis of projects. the mail goal of the paper is to economically analyze the current alternatives of meighan wetland utilization including extraction of sodium sulfate, aquaculture of artemia and integrative alternative considering external costs of wetland degradation. in order to detect eventual degradation of wetlan...

اسماعیلی ساری, عباس , بهرامی‌فر, نادر , علی‌دوست, شهره ,

Background and purpose: Mercury contamination is still a threat to the environmental and public health in both developed and developing countries. The aim of this study was to determine the total and organic mercury content in the muscle of goldfish (Carassius aurathus gibelio) obtained from the east and west of Anzali Wetland. We also assessed the health risks involved in consumption of this f...

Journal: :Journal of environmental health 2007
Alice L Anderson Kevin O'Brien Megan Hartwell

Wetlands serve an important purpose in flood control and water quality, but constructed-wetland sites also provide habitats for mosquito breeding. Communities near constructed-wetland sites often raise a "mosquito" objection when constructed wetlands are proposed. Wildlife and wetland advocates can confuse the public by making unsubstantiated claims about natural predators eliminating or contro...

اسماعیلی ساری, عباس , بهرامی‌فر, نادر , حسن‌زاده, نسرین , خدابنده, صابر ,

Abstract Background and purpose: Today, environmental pollution, especially pollution of aquatic ecosystems, has caused serious problems for humans and other organisms. Endocrine disrupting chemicals are a group of chemical compounds that have serious adverse effects on humans and animals reproduction system. Phthalate acid esters (PAEs) are used as plasticizers which are easily released and...

ژورنال: علمی شیلات ایران 2019

Water resources such as wetlands, in addition to their economic and social importance, are ecologically valuable sources of aquaculture production. Due to its effects on aquatic environments, necessity of monitoring and awareness of the spatial and temporal distribution of chlorophyll-a is important for environmental studies. In the new approach to such studies, application of spatial statistic...

Baballah Hayati Mina Salehnia, Mohammad Ghahremanzadeh, Morteza Molaei

The Lake Urmia and its satellite wetlands have been selected as a demonstration site for the United Nations Development Program / Global Environment Facility / Department of Environment Conservation of Iranian Wetlands Project. This project aims to demonstrate reduction of the major threats of this wetland protected area coordinated through an integrated management plan. A choice experiment was...

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