نتایج جستجو برای: mighan wetland

تعداد نتایج: 10250  

2007
MIKLAS SCHOLZ M. Scholz

The aim of this paper is to recommend a rapid classification system for sustainable flood retention basins (SFRBs) to control runoff in a temperate climate. The system should improve communication among engineers and scientists, and was developed with a general database (approximately 660 basins) and a very detailed database (56 basins), using the River Rhine catchment in the South of Baden (Ge...

2014
E.

Arsenic mobility and transport in the environment are strongly influenced by associations with solid phases. This dissertation investigates the mechanisms affecting arsenic retention in contaminated wetland and riverbed sediments. A sequential extraction procedure was designed and tested to differentiate solid phase arsenic speciation, including adsorbed As and As coprecipitated with amorphous ...

Nowadays, the risk of degradation of wetlands is one of the main environmental challenges in the world, so continuous and long-term monitoring of ecological changes in wetlands can play a key role in their protection and proper management. In the present study, the trend of monthly changes in some of the most important ecological indicators of the aquatic environment of Shadegan wetland includi...

ژورنال: علوم آب و خاک 2019

Today, the use of refined urban wastewater for agriculture is growing considerably. One of the methods for the natural treatment of wastewater is the constructed wetland. In this study, the effects of three and six days retention time on the vertical, horizontal and hybrid constructed wetland (first vertical and then horizontal) with perlite beds and Cyperus plants on the urban wastewater were ...

Examining society’s preferences for any change in the status of wetlands, can translate their direct and indirect benefits into monetary values and provide useful information for the policy makers and planners. Hoor-al-Azim Wetland (also Hoor-al-Hoveizeh) is one of the four large wetlands with an area of over 125 thousand hectares located in Khuzestan province located in southwestern Iran on it...

ژورنال: اکوبیولوژی تالاب 2020
Nezhadnaderi, Mehdi , Razavi Doleh Malal, Safoura ,

Determination of environmental water rights of Amirkalayeh wetland is one of goals for improving of water quality environmental protection and ecosystem restoration dependent on it. This tends to preserve the natural environment and biological values ​​of wetlands. Amirkalayeh wetland is one of important international wetlands recorded in the International Convention for the Protection of Wetla...

Kazem Hemmadi, Samaneh Abdoveis

 Hoor al-Azim wetland, are a large and permanent wetland area located between Iran and Iraq.  By entering the flow to the wetland area, the geometry of the wetland, acts in the form of an inverted imperfect pyramid. So that by entering the water flow, the water level of wetland is simultaneous by increasing the surface. In this study by using the geometric relationships of pyramids, was acted t...

2009
RobeRT W. LiChvAR GARy A. LAURSen RoDney D. SeppeLT WALTeR R. oChS

To support the determination of hydrophytic vegetation in wetland delineations in Alaska, USA, a series of tests were conducted to develop a group of “test positive” species to be used in a “cryptogam indicator.” in 2004, non-vascular cryptogam species (bryophytes, lichens, and fungi) from interior and South-Central Alaska in the vicinities of Fairbanks and Anchorage were collected at a series ...

2012
Ben Davis Ross Johnston Ronald Baker Marcus Sheaves

The physical and faunal characteristics of coastal wetlands are driven by dynamics of hydrological connectivity to adjacent habitats. Wetlands on estuary floodplains are particularly dynamic, driven by a complex interplay of tidal marine connections and seasonal freshwater flooding, often with unknown consequences for fish using these habitats. To understand the patterns and subsequent processe...

Journal: :Ecological applications : a publication of the Ecological Society of America 2010
Dana Marie Bauer Peter W C Paton Stephen K Swallow

Recent declines in amphibian populations have raised concern among conservation biologists, with habitat loss and degradation due to human activities among the leading causes. The most common policies used to protect the habitat of pond-breeding amphibians are wetland regulations that safeguard the wetland itself. However, many amphibians spend much of their adult lives foraging and over-winter...

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