نتایج جستجو برای: fish assemblage
تعداد نتایج: 111884 فیلتر نتایج به سال:
To evaluate the effects of macrophytes presence in the structure of littoral fish assemblages in the littoral zone, monthly samples were collected from September, 2006 to August, 2007 in an impounded tributary of the Itá Reservoir, the Fragosos River, located in the Upper Uruguay River Basin. Fish were collected using a beach seine and sampling was conducted in the littoral zone inside a macrop...
The study and research of abundance and diversity variation of fish larva (Ichthyoplankton stages) was done in Gowatr Bay during autumn 2006 - summer 2007. Five stations were selected for sampling, and Bongo-Net with 300µ mesh size was towing from bottom to surface. During of survey, totally 531 larvae belong to 11 families were collected and identified. The mean abundance estimated 12.17 larva...
Impacts of effluent from fish farming activities on fluvial ecosystems lead to deterioration of water quality and changes in the macroinvertebrates assemblage. In this study, the influence of fish farm effluents on water quality and macroinvertebrates communities of Tajan River was investigated to evaluate the suitability of macroinvertebrates based on biological metrics and indices. Benthic...
The offshore waters of the Yangtze Estuary are an important fish habitat, and large gradient environmental conditions leads to different assemblages. We studied spatial temporal variations in assemblages their relationships with factors during autumns 2012–2016. assemblage consisted 64 species from 39 families, which 6 were dominant. There significant interannual differences abundance, biomass,...
A field experiment was established in Bocas Del Tom, Panama to examine the relationship between sessile organisms living on mangrove prop roots and fish communities. Artificial mangrove roots (AMR) with different sets of artificial (AE) or real epibionts were established in five different locations in two separate years. Fish species in each plot were identified, counted, and their size estimat...
the aim of this study was to estimate the influence of selected environmental parameters on the fish larval distribution and abundance between october 2012 and september 2013 in the mangrove estuarine area of marudu bay, sabah, malaysia. fish larvae samples were collected monthly using plankton net of 350 mm of mesh size with a mouth opening of 40.5 cm in diameter through 20 min surface tows. f...
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