نتایج جستجو برای: benthic macroinvertebrates

تعداد نتایج: 12923  

Journal: :شیلات 0
الهام میررسولی باشگاه پژوهشگران جوان، دانشگاه آزاد اسلامی، لاهیجان، ایران رسول قربانی 2دانشگاه علوم کشاورزی و منابع طبیعی، دانشکده شیلات، گرگان، ایران

this study was conducted to assess water quality level of zarin gol stream on macrobenthic invertebrates. macrobenthic fauna were sampled from 9 selected sampling stations along the stream with an average distance of 22 km by using a surber sampler every 45 days during the year. sampling was replicated 9 times in each sampling station. collected samples were fixed with 4% formalin, isolated, an...

Journal: :World Journal of Biology Pharmacy and Health Sciences 2023

Benthic macroinvertebrates are the best indicators of ecological quality watercourses because their specific diversity, sensitivity, variable life span and capacity to adapt all types environments. In order determine health status some rivers in Southern Cameroon Region, a study was conducted Kribi Ocean Department between February 2022 2023. Physicochemical analyses were carried out according ...

2013
Melanie J Bishop Brendan P Kelaher

Many aquatic ecosystems are sustained by detrital subsidies of leaf litter derived from exogenous sources. Although numerous studies have examined the effects of litter species richness and identity on decomposition processes, it remains unclear how these effects extend to associated invertebrate communities or how these effects vary spatially according to local environmental context. Using fie...

2017
Pascal Dumas Jayven Ham Rocky Kaku Andrew William Jeremie Kaltavara Sompert Gereva Marc Léopold

In the Pacific, the protection of coral reef resources is often achieved through the implementation of village-based marine reserves (VBMRs). While substantial fisheries benefits are often reported, results of quantitative approaches are controversial for benthic macroinvertebrates, whose life history traits may cause low congruence with protective measures implemented at non-ecologically relev...

2006
D. E. SHOUP S. P. CALLAHAN D. H. WAHL C. L. PIERCE

Growth of sympatric populations of three important sport fish species: bluegill Lepomis macrochirus, largemouth bass Micropterus salmoides and channel catfish Ictalurus punctatus, in 14 Illinois reservoirs was assessed in an attempt to relate size-specific growth to environmental conditions. Multiple regression relationships for most species and size classes explained a large percentage of the ...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2016
M S G Moura E Silva T S Graciano M E Losekann A J B Luiz

Biomonitoring is a cheap and effective tool for evaluation of water quality, and infer on the balance of aquatic ecosystems. The benthic macroinvertebrates are bioindicators sensitive to environmental changes, and can assist in detecting and preventing impacts such as organic enrichment and imbalance in the food chain. We compared the structure of benthic communities on artificial substrate sam...

2014
Joseph E. Flotemersch Sheila North Karen A. Blocksom

Benthic macroinvertebrates are sampled in streams and rivers as one of the assessment elements of the US Environmental Protection Agency's National Rivers and Streams Assessment. In a 2006 report, the recommendation was made that different yet comparable methods be evaluated for different types of streams (e.g., low gradient vs. high gradient). Consequently, a research element was added to the ...

Journal: :Journal of Arid Environments 2021

We analyzed the influence of land use and water physical-chemical characteristics on trait composition benthic macroinvertebrates in arid-land streams North-East Algeria. Macroinvertebrates were sampled spring season 2015, 2017 2018 at 36 sampling sites distributed along 5 Belezma biosphere reserve. Samples taken from various substratum types using a Surber net. Most variability trait-environme...

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