نتایج جستجو برای: dam impoundment
تعداد نتایج: 13224 فیلتر نتایج به سال:
The development of new strategies for the operation existing dams is essential restoring ecosystems that have already been affected by construction and current regulation these dams. assessment environmental flows (EFs) significant in guiding such strategic dam operations. However, most methods just focus on one species or guild without simultaneously considering interactions with other aquatic...
With the increasing height of rockfill dams, detailed and effective numerical simulation for dam design construction has become increasingly important. This paper develops a finite element program impoundment process high large-scale earth dams studies influence accuracy on deformation crack analysis. By establishing subdivision mode conventional elements, mesh generation is realized. Using row...
Damming and impoundment are among the main flow-related alterations in rivers worldwide. However, compared to highland river sections where impacts associated with dams have been largely studied, still scarce evidence is available scientific literature for large, lowland rivers. In this study, ecological effects of a hydropower dam Po River (Italy) on taxonomic functional responses benthic macr...
Small streams in urbanized rural areas receive loads of P from various, often episodic, sources. This paper addresses, through a tracer test with 32P, retention and transport pulse input phosphorus 2.6 km long stretch channelized second-order lowland stream. Tritiated water was introduced alongside the 32P-labelled ortophosphate order to isolate influence hydrodynamic factors on behavior. Trace...
The geographical environment fundamentally influences the transport and deposition of sediments, including microplastics. In addition, socioeconomic differences inherent in transboundary catchments result various waste management strategies among different countries influencing input microplastics into rivers. catchment Tisza River Central Europe is shared by five with economic statuses wastewa...
Hydroseismicity was proposed to explain the occurrence of intraplate earthquakes in regions. Koyna Warna region one of the reservoir triggered seismicity zone in India, which is an example of intraplate earthquake region. The seismicity is continuing after 45 years of impoundment of the Koyna reservoir in 1961 and 25 years of impoundment of Warna reservoir in 1985. The excess of previous maximu...
We quantified fish assemblages in 20 streams containing mill dams in various physical conditions (dams intact, partially breached, or relict with normal flows) in Alabama, USA, during the period from 2006 to 2008. We used a backpack electroshocker to sample three 150-m reaches per stream: 500 to 1000 m downstream of the dam, 0 to 100 m downstream of the dam, and 100 m upstream of the impoundmen...
Applying the ecosystem services concept to conservation initiatives or in managing ecosystem services requires understanding how environmental impacts affect the ecology of key species or functional groups providing the services. We examined effects of river impoundments, one of the leading threats to freshwater biodiversity, on an important ecosystem service provided by large tropical rivers (...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید