نتایج جستجو برای: trophic state index

تعداد نتایج: 1243378  

Journal: :International Journal of Health Sciences (IJHS) 2022

Limnology is the study of aquatic system. The current research focuses on physical, chemical, and biological properties Bomani beel Garjan in Kampur district. looked into existence phytoplankton compared it to two different beels. community plankton changes water quality based parameters. at 12 characteristics, as well algae weight analysis statistical analysis. There are no significant differe...

2015
Kyle J. Broadway Mark Pyron James R. Gammon Brent A. Murry

As the intensity and speed of environmental change increase at both local and global scales it is imperative that we gain a better understanding of the ecological implications of community shifts. While there has been substantial progress toward understanding the drivers and subsequent responses of community change (e.g. lake trophic state), the ecological impacts of food web changes are far le...

2008
Teresa Mathews Nicholas S. Fisher

There is increasing recognition of the importance of dietary pathways in determining metal body burdens in marine organisms. With a simple kinetic model that requires information about the ingestion rate of an animal and the assimilation efficiency (AE) and efflux rate constant (ke) of a metal following dietary exposure, it is possible to quantitatively predict the trophic transfer and biomagni...

Journal: :Revista de biologia tropical 2013
Vineet Kumar Dubey Uttam Kumar Sarkar Ajay Pandey Wazir Singh Lakra

In India, freshwater aquatic resources are suffering from increasing human population, urbanization and shortage of all kind of natural resources like water. To mitigate this, all the major rivers have been planned for a river-interlinking through an interlinking canal system under a huge scheme; yet, the baseline information on ecological conditions of those tropical rivers and their fish comm...

Journal: :Journal of the Serbian Chemical Society 2010

Journal: :The UW National Parks Service Research Station Annual Reports 1996

2012
Valentina Lauria Martin J. Attrill John K. Pinnegar Andrew Brown Martin Edwards Stephen C. Votier

Climate change has had profound effects upon marine ecosystems, impacting across all trophic levels from plankton to apex predators. Determining the impacts of climate change on marine ecosystems requires understanding the direct effects on all trophic levels as well as indirect effects mediated by trophic coupling. The aim of this study was to investigate the effects of climate change on the p...

Journal: :Science 1979
R J Cornett F H Rigler

Rates of hypolimnetic oxygen depletion can be predictedfrom a knowledge of a lake's phosphorus retention, the average hypolimnetic temperature, and the mean thickness of the hypolimnion. Areal oxygen deficits cannot be used to index lake trophic status because areal calculations do not eliminate the influence of hypo-limnetic morphometry.

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