نتایج جستجو برای: zarrineh river watershed

تعداد نتایج: 96483  

Some riparian areas of the country are in danger of deterioration due to uncontrolled exploitation coupled with loose implementation of environmental protection policies and regulations. Muleta River, a major watershed in Bukidnon, Philippines, was assessed to determine the present condition of its riparian habitat. Abiotic and biotic conditions of the river were assessed. Other factors includi...

Journal: :Environmental management 2016
Lee Benda Daniel Miller Jose Barquin Richard McCleary TiJiu Cai Y Ji

Modern land-use planning and conservation strategies at landscape to country scales worldwide require complete and accurate digital representations of river networks, encompassing all channels including the smallest headwaters. The digital river networks, integrated with widely available digital elevation models, also need to have analytical capabilities to support resource management and conse...

Journal: :نشریه علمی - پژوهشی هیدرولوژی کاربردی 0
homayoun khoshravan km8 khezerabad,sari, mazandaran, iran, environmental management research group fatemeh nasehi azad university of ardebil

the main purpose of the study is determination of the pollutants hazard potential as well as environmental vulnerability of qarah su river. first the most significant pollutant sources in the qarah su river watershed were identified and then accordingly the pollution hazard potential rate was calculated in universal ranking system model setting. then, by generalizing the algebraic sum of the re...

Journal: :Journal of Biological Engineering 2008
Angela D Rodriguez Marty D Matlock

BACKGROUND Nutrient management in rivers and streams is difficult due to the spatial and temporal variability of algal growth responses. The objectives of this project were to determine the spatial and seasonal in situ variability of trophic status in the Lake Waco/Bosque River watershed, determine the variability in the lotic ecosystem trophic status index (LETSI) at each site as indicators of...

2011
J. S. SANDERSON N. ROWAN T. WILDING B. P. BLEDSOE W. J. MILLER N. L. POFF

Growing water demand across the world is increasing the stress on river ecosystems, causing concern for both biodiversity and people. River‐specific environmental flow assessments cannot keep pace with the rate and geographic extent of water development. Society needs methods to assess ecological impacts of flow management at broad scales so that appropriate regional management can be implement...

2017
Armelle Paule Émilie Lyautey Frédéric Garabetian Jean-Luc Rols

In the natural environment, microbial community structure of river biofilm is controlled by biotic and abiotic factors. This study explored the capacity to manipulate the structure of microbial communities by modifying environmental conditions during the course of biofilm development. River epilithic biofilm was cultivated in situ on artificial substrates placed parallel to river water flow. Su...

2011
Aditya Sood William F. Ritter

A framework is built, wherein hydrological/water quality model is used to measure watershed sustainability. For this framework, watershed sustainability has been defined and quantified by defining social, environmental and biodiversity indicators. By providing weightage to these indicators, a “River Basin Sustainability Index” is built. The watershed sustainability is then calculated based on t...

Journal: :Computers & Geosciences 2013
Xuan Yu Gopal Bhatt Christopher J. Duffy Yuning Shi

SHALEHILLS, PA CZO Snow FLUX-­‐PIHM(LSM) Age Isotope Transport Carbon Cycle LITTLE JUNIATA, PA CZO Ecology/Wetland FLUX-­‐PIHM(LSM) SHAVERS CREEK, PA CZO Ecology/Wetland LACKAWANNA RIVER, PA Ecology/Wetland MAHANTANGO CREEK, PA Ecology/Wetland MUDDY CREEK, PA Ecology/Wetland YOUNG WOMAN CREEK, PA CZO Ecology/Wetland JUNIATA RIVER BASIN, PA Parallel computa>on Large watershed applica>on WHITE CL...

2015
Hua-Shan Xu Zong-Xue Xu Hua Zheng Zhi-Yun Ouyang

An allocation scheme of water pollutant reduction is the key procedure to implement a watershed total maximum daily load (TMDL) program. In order to improve the equity for the allocation scheme of water pollutant load reduction, five indexes involved in allocation processes were selected from fields associated with society, environment, economics, and resources. The weights of these indexes wer...

2007
Duncan Hughes

The Soque River Watershed Partnership received CWA §319 funding to perform a comprehensive baseline assessment of the biological, chemical, and physical health of the watershed. Certain stream segments in the Soque basin violate State water quality standards for bacteria and sediments. The assessment is designed to identify and prioritize areas for both protection and remediation. Rapid bioasse...

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