Nitrogen (N) fertilizer runoff into rivers is linked to nutrient enrichment, hydrologic alteration, habitat degradation and loss, and declines in biotic integrity in streams. Nitrogen runoff from agriculture is expected to increase with population growth, so tracking these sources is vital to enhancing biomonitoring and management actions. Unionid mussels are large, long-lived, sedentary, prima...

The biodiversity of stream fishes is critically threatened globally, and a major factor leading to the loss anthropogenic land use in catchments, which act as stressors fishes. Declines fish are often identified by species or fewer individuals comprising assemblages, but biological degradation can also occur with increases non-native and/or spread tolerant use, suggesting importance accounting ...

Benthic diatoms are well known bioindicators of water quality, used in many aquatic ecosystems. Since diatom-based monitoring quality is required by European legislation, the search for methods that facilitate this task has become more relevant. The aim study was to test reliability DNA metabarcoding combined with high-throughput sequencing (HTS) techniques bioassessment 22 Mediterranean shallo...

Charophytes (stoneworts) form a group of macrophytes that are considered sensitive to eutrophication. The high indicator value charophytes toward eutrophication results in their wide use the bioassessment systems. I explored variability stonewort communities' requirements for trophic conditions lowland temperate lakes and attempted determine role individual syntaxa assessing ecological status P...

Aquatic macroinvertebrates, which play a significant role in the food chain of an ecosystem, are used in fresh water quality assessment to identify the environmental stress resulting from a variety of anthropogenic disturbances. Seasonal surveys of macroinvertebrate communities were conducted from April 2013 to March 2014 in Chhariganga oxbow lake of Nadia District of West Bengal, an eastern st...

Studies on biodiversity patterns should optimally relate different scales of temporal community variability to spatial variability. Although is often negligible compared variation, it may still constitute a substantial source overall in stream ecosystems. Boreal streams exhibit seasonally recurring environmental periodicity, which can be expected induce synchronous dynamics abiotic variables am...

An important goal for community ecology is the characterization and prediction of changes in community patterns along environmental gradients. We aimed to identify the major environmental correlates of diatom distribution patterns in boreal running waters. We classified 197 stream sites based on their diatom flora. Direct ordination methods were then used to identify the key environmental deter...

Eutrophication remains one of the foremost impacts of industrialization and population expansion on aquatic ecosystems worldwide. Selecting metrics for assessing the manner in which communities and biogeochemical processes respond to nutrient fertilization is an ongoing management challenge critical both for detecting changes and for monitoring recovery of impaired environments. A key limitatio...