The present study includes the results of second benthic macrophytes? monitoring period a survey ecological status from Turkish coasts. biotic index Ecological Evaluation Index (EEI-c) was used to assess classes (ESC) and MA-LUSI anthropogenic pressures. Sampling made by quadrat (20 × 20 cm) method, samples were collected 93 sites in coastal waters between 2017 2019. In total, 240 taxa found ma...

Pindo Grande River water quality was analyzed during rainy seasons of 2014 and 2017 dry 2015 2016. Specimens were collected using surber net, kick net manual stone collection, from five different sites along the river. In laboratory, specimens identified to lowest possible taxonomic level. Taxon richness, abundance, diversity, trophic niches, Biological Monitoring Working Party for Colombia (BM...

Abstract Background The application of index biotic integrity (IBI) to evaluate river health can be an essential method for ecosystem management. However, these types methods were developed in small, low-order streams, and are therefore, infrequently applied large rivers. To that end, phytoplankton communities environmental variables monitored 30 sampling segments the middle lower reaches Yangt...

Many types of indices have been developed to assess benthic invertebrate community condition, but there have been few studies evaluating the relative performance of different index approaches. Here we calibrate and compare the performance of five indices: the Benthic Response Index (BRI), Benthic Quality Index (BQI), Relative Benthic Index (RBI), River Invertebrate Prediction and Classification...

Many types of indices have been developed to assess benthic invertebrate community condition, but there have been few studies evaluating the relative performance of different index approaches. Here we calibrate and compare the performance of five indices: the Benthic Response Index (BRI), Benthic Quality Index (BQI), Relative Benthic Index (RBI), River Invertebrate Prediction and Classification...

we investigated the environmental impact of trout farm discharge on zayandeh-rud river. three farms with different production capacities; 250, 25 and 70 tones were assigned to this study. five sampling sites were designated to each farm. benthic macroinvertebrates were collected in autumn, winter, and spring using the quantitative techniques. a total of 11 classes, 16 orders and 53 families&apo...

The introduction of alien species, which are also called exotic or non-native species, can cause a decrease in biotic similarity among areas when different species are introduced to each area and remain localized, a process called biotic differentiation (Olden & Poff, 2003; Qian et al., 2008). However, over time, alien species often spread widely and cause an increase in biotic similarity among...

Natural ecological variability and analytical design can bias the derived value of a biotic index through the variable influence of indicator body-size, abundance, richness, and ascribed tolerance scores. Descriptive statistics highlight this risk for 26 aquatic indicator systems; detailed analysis is provided for contrasting weighted-average indices applying the example of the BMWP, which has ...

In an effort to better portray changing health conditions in Chesapeake Bay and support restoration efforts, a Bay Health Index (BHI) was developed to assess the ecological effects of nutrient and sediment loading on 15 regions of the estuary. Three water quality and three biological measures were combined to formulate the BHI. Water quality measures of chlorophyll-a, dissolved oxygen, and Secc...

Coral reefs are globally important marine ecosystems as sites of high biotic diversity. Reef flat sediments are reasonably homogeneous in composition. This substratum is subject to gradients in water motion, grazing pressure and benthic productivity. This study used DNA fingerprinting techniques, automated rRNA intergenic spacer analysis (ARISA), and terminal restriction fragment length polymor...