Author(s): R. M. Nadushan, H. Emadi, M. R. Fatemi & M. Samanpajuh
Macroinvertebrates play a key role in freshwater lentic and lotic ecosystems.
Lake Neor, located in the northwest of Iran (37º 55´ to 38º 1´ 45), 2700m above
sea level, is one of the lakes with little information available regarding the
Therefore, the present study was planned and conducted
during a period of one year focusing on macroinvertebrate fauna and assemblage.
Sampling was done monthly at four sites from August 2008 to July 2009.
Altogether, a total of 11 species belonging to three phyla, seven classes, 10
orders and 10 families were identified, indicating a low diversity.
species, eight are recorded for the first time from this lake and from the country,
including Pisidium supinum, Fossaria humilis, Stagnicola catascopium,
Quistadrilus multisetosus, Stylodrilus herngianus, Mooreobdella fervida, Podura
aquatica, Dasycorixa hybrida.
From these species, Gammarus fasciatus,
Pisidium supinum and Quistadrilus multisetosus were dominant, constituting
49%, 43% and 5% of the total benthic fauna respectively.
species, Gammarus fasciatus and Pisidium supinum, are indicator species that
are sensitive to eutrophic conditions, reflecting the oligo-mesotrophic character
of the lake.
Dissolved oxygen, temperature, TOM and habitat homogeneity
seemed to be the main environmental factors affecting the community structure
of macroinvertebrate fauna in this lake.
At present, in this shallow water body
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Paper DOI: 10.2495/WP100151
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