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Download Aquatic Ecosystem: Biodiversity, Ecology and Conservation by Mamta Rawat, Sumit Dookia, Chandrakasan Sivaperuman PDF

By Mamta Rawat, Sumit Dookia, Chandrakasan Sivaperuman

This e-book brings jointly the newest info at the quick advances and advancements within the box of aquatic ecology. India is especially wealthy when it comes to organic range because of its wide selection of habitats and weather conditions. it's domestic to up to 7 consistent with cent of the world’s animal species, even though it purely money owed for roughly 2 in keeping with cent of the full landmass. the current paintings on biodiversity, ecology and conservation of aquatic assets represents unique examine within the box of aquatic biodiversity, wetland ecology and its purposes just about the country’s aquatic assets. There are 19 chapters, every one contributed through a professional in his/her specific box and providing novel ways to numerous subject matters within the quarter of aquatic ecosystems.

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Additional resources for Aquatic Ecosystem: Biodiversity, Ecology and Conservation

Sample text

Communities not only have a definite functional unity with characteristic trophic structures and patterns of energy flow but they also have compositional unity in that there is certain probability that certain species will occur together. However species are to a large extent replaceable in time and space so that functionally similar communities may have different species composition. Distribution is the geographical extent of population or other ecological units. Primarily the presence or absence of suitable habitat condition determines its range.

Community itself is a wide term with various meanings, but essentially it is used to denote a collection of species, living together, and usually linked to a particular habitat. Kendeigh (1980) considered community or biocenose as an aggregate of organisms, which form a distinct ecological unit. Association 4 Spatial Distribution of Benthic Macroinvertebrate Fauna is sometimes used for group of populations that occur in the same area without regard to their interactions; community however denotes an association of interacting population (Ricklefs 1990).

On the other hand most of the Ephemeroptera observed are basically scrapers, and only few feed on the FPOM component of the detritus. Diptera is abundant after Ephemeroptera and Trichoptera in the Yamuna, Bhagirathi, Pindar and Ramganga basins. 2). This is quite contrary to the observation that the relative abundance of Ephemeroptera exceeds Trichoptera in glacier-fed Himalayan rivers, the Bhilangana (Man Mohan and Bisht 1991), the Ganga near the foothills at Hardwar (Nautiyal et al. 1997b) and the Bhagirathi (Nautiyal et al.

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