نتایج جستجو برای: boojagh wetland

تعداد نتایج: 10235  

Journal: :محیط شناسی 0
فریدون غضبان دانشیار، گروه مهندسی محیط زیست، دانشکدة محیط زیست دانشگاه تهران مریم زارع خوش اقبال استادیار، رسوب شناسی و سنگ شناسی رسوبی، دانشگاه آزاد آستارا

abstruct anzali wetland in north of guilan provience is an international important wetland that is recorded in ramsar convension. pollution is one of the major problems facing this wetland. in order to investigate the pollution situation, sediment core samples were taken in 7 stations in 4 districts within the wetland, namely abkenar, siakishom, hendekhale and shijan). elements were determined ...

Journal: :environmental resources research 0
s sefidian gorgan university of agricultural sciences and natural resources (guasnr), gorgan, iran a salmanmahiny gorgan university of agricultural sciences and natural resources (guasnr), gorgan, iran h. mirkarimi gorgan university of agricultural sciences and natural resources (guasnr), gorgan, iran n.a. hasan abassi gorgan university of agricultural sciences and natural resources (guasnr), gorgan, iran

wetlands as water resources have a special place in the semi-arid plateau of iran and boundary determination is necessary for their effective conservation and conflict resolution among stakeholders that are dependent on these resources. determination of the wetland boundaries should be commensurate with environmental features affecting on it which normally extend beyond water extent. ecological...

2015
Se-Yeun Lee Maureen E. Ryan Alan F. Hamlet Wendy J. Palen Joshua J. Lawler Meghan Halabisky Curtis J. Richardson

Wetlands are globally important ecosystems that provide critical services for natural communities and human society. Montane wetland ecosystems are expected to be among the most sensitive to changing climate, as their persistence depends on factors directly influenced by climate (e.g. precipitation, snowpack, evaporation). Despite their importance and climate sensitivity, wetlands tend to be un...

Measuring salinity of water at different depths along six transacts at the mouth of the wetland and along five tributaries connecting the wetland to the sea the extent of Caspian Sea penetration into Anzali Wetland was determined. The results demonstrated a depth-dependent salinity gradient extending up to 10 kilometres into the wetland. A pattern of saltwater and freshwater interface is presen...

2013
Julie C Anderson Jules C Carlson Jennifer E Low Jonathan K Challis Charles S Wong Charles W Knapp Mark L Hanson

BACKGROUND The discharge of complex mixtures of nutrients, organic micropollutants, and antibiotic resistance genes from treated municipal wastewater into freshwater systems are global concerns for human health and aquatic organisms. Antibiotic resistance genes (ARGs) are genes that have the ability to impart resistance to antibiotics and reduce the efficacy of antibiotics in the systems in whi...

2013
R. Wania J. R. Melton E. L. Hodson B. Poulter B. Ringeval R. Spahni T. Bohn C. A. Avis G. Chen A. V. Eliseev P. O. Hopcroft W. J. Riley Z. M. Subin H. Tian P. M. van Bodegom T. Kleinen Z. C. Yu J. S. Singarayer S. Zürcher D. P. Lettenmaier D. J. Beerling S. N. Denisov C. Prigent F. Papa

The Wetland and Wetland CH4 Intercomparison of Models Project (WETCHIMP) was created to evaluate our present ability to simulate large-scale wetland characteristics and corresponding methane (CH4) emissions. A multi-model comparison is essential to evaluate the key uncertainties in the mechanisms and parameters leading to methane emissions. Ten modelling groups joined WETCHIMP to run eight glob...

Journal: :Advances in space research : the official journal of the Committee on Space Research 2001
M Nelson H T Odum M T Brown A Alling

Bioregenerative life support technologies for space application are advantageous if they can be constructed using locally available materials, and rely on renewable energy resources, lessening the need for launch and resupply of materials. These same characteristics are desirable in the global Earth environment because such technologies are more affordable by developing countries, and are more ...

2015
Ronny Merken Evelien Deboelpaep Joachim Teunen Santiago Saura Nico Koedam Roberto Ambrosini

To complete their life cycle waterbirds rely on patchily distributed and often ephemeral wetlands along their migration route in a vast unsuitable matrix. However, further loss and degradation of remaining wetland habitats might lead to a configuration and size of stopovers that is no longer sufficient to ensure long-term survival of waterbird populations. By identifying optimal conservation ta...

Journal: :iranian journal of toxicology 0
محمدرضا وصالی ناصح mohammad reza vesali naseh , university of tehran, tehran, iran. عبدالرضا کرباسی abdolreza karbassi , university of tehran, tehran, iran. فریدون غضبان fereydoon ghazaban , university of tehran, tehran, iran. اکبر باغوند akbar baghvand , university of tehran, tehran, iran.

background: evaluation of heavy metals as toxic pollutants in environment has a significant importance in environmental pollution studies. surficial sediments of water resources have a high potential in releasing heavy metals to the upper water environment, hence sediment analysis presents guidelines to the authorities for monitoring the environmental systems. methods: in this study, total and ...

Journal: :تحقیقات نظام سلامت 0
حمیدرضا تشیعی رئیس مرکز تحقیقات و خودکفایی صنعتی، شرکت مهندسی آب و فاضلاب کشور مختار مهدوی فوق لیسانس مهندسی بهداشت محیط، کارشناس مرکز تحقیقات و خودکفایی صنعتی، شرکت مهندسی آب و فاضلاب کشور فرهام کرکانی فوق لیسانس مهندسی بهداشت محیط، مدیر پدافند غیرعامل شرکت مهندسی آب و فاضلاب کشور سید وحید غلمانی کارشناس عمران ، مسئول تصفیه خانه فاضلاب شهر یزد حسین عطائی فر سرپرست دفتر تحقیقات و خودکفایی صنعتی شرکت مهندسی آب و فاضلاب کشور

background: selection of different wastewater treatment methods depends on the kind of wastewater, geographical position of the community, quantity and quality of wastewater and effluent, technology and finance. natural wastewater treatment methods are simple, cheap and acceptable for developing countries specially small and remote countries and wetland is one of these methods. wetlands include...

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