Effect of organic pollution on benthic communities

1970 ◽  
Vol 1 (4) ◽  
pp. 56-57 ◽  
Author(s):  
Stjepko Golubic
Keyword(s):  
Benthic Communities ◽  
Organic Pollution

scholarly journals Succession in rocky intertidal benthic communities in areas with different pollution levels at Guanabara Bay (RJ-Brazil)

2005 ◽  
Vol 48 (6) ◽  
pp. 951-965 ◽  
Author(s):  
André Breves-Ramos ◽  
Helena Passeri Lavrado ◽  
Andrea de Oliveira Ribeiro Junqueira ◽  
Sérgio Henrique Gonçalves da Silva
Keyword(s):  
Community Development ◽  
Species Composition ◽  
Benthic Communities ◽  
Organic Pollution ◽  
Polluted Area ◽  
Rocky Intertidal ◽  
Percent Cover ◽  
Guanabara Bay ◽  
Pollution Levels ◽  
Resilient Communities

The aim of this study was to describe and compare the succession of intertidal benthic communities in two areas at Guanabara Bay, RJ, Brazil: Urca, an area submitted to moderated organic pollution and Catalão, an extremely polluted area. Three transects in each area were scraped one month before the beginning of this study in order to evaluate the recruitment (recruitment-treatments). Three other transects were monitored without manipulation (monitoring treatments). Species composition and relative abundance were evaluated monthly between September and December, 2000. A total of 26 species was found at Urca and 13 at Catalão. The percent cover of the most abundant organisms was not similar between treatments at Urca after four months, while in Catalão, the similarity was 72% in the second month. The faster community development and recovery at the most polluted area was probably related to the existence of simple and resilient communities in more impacted areas.

scholarly journals Extreme Organic Pollution of Bottom Sediments and Temporal Changes in Biomass of Benthic Communities at a Borrow Pit in Mikawa Bay

2011 ◽  
Vol 34 (3) ◽  
pp. 47-55
Author(s):  
Kenji KANEKO ◽  
Seiho HASHIGUCHI ◽  
Tomoki MIYAMUKAI ◽  
Kazumasa IMAO ◽  
Mitsuyasu WAKU ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Benthic Communities ◽  
Organic Pollution ◽  
Temporal Changes

scholarly journals Indicator benthic microalgae in assessment of the degree of organic water pollution on the example of Crimean coastal waters of the Sea of Azov

2019 ◽  
Vol 4 (3) ◽  
pp. 69-80
Author(s):  
L. I. Ryabushko ◽  
A. V. Bondarenko ◽  
S. S. Barinova
Keyword(s):  
Water Pollution ◽  
Water Quality ◽  
Coastal Waters ◽  
Anthropogenic Impacts ◽  
Benthic Communities ◽  
Organic Pollution ◽  
Sea Of Azov ◽  
Organic Substances ◽  
Water Quality Indicators ◽  
The Sea Of Azov

Data of the study of microphytobenthos of Crimean coastal waters of the Sea of Azov during 2005–2006, 2008–2011 and 2014 at 17 stations in the Sivash Gulf (East and West), Kamysh-Burunskaya Bay (Kerch) and bays of Kazantip Cape are given. Totally 200 taxa of microalgae belonging to 77 genera were found. Of these, 78 species – saprobity indicators, related to cyanobacteria (17 %) and diatoms (83 %), from 39 genera, for which bioindicative characteristics of organic water pollution are known, are used for the analysis of different ecotopes and regions. A leading place in microalgae flora belongs to a group of betamesosaprobionts (31 species) – indicators of moderate organic pollution, or of the III class of water quality with index of saprobity S = 2.0. The second place belongs to a group of oligosaprobionts (10 species), or of the II class of water quality, which is typical for natural clean waters with S = 1.0. According to the indicator of microalgae, there are no negative changes in the water quality in the regions. This indicates that anthropogenic impacts do not exceed the self-restoring potential of the marine ecosystems. However, the presence of the IV class of water quality indicators (17–21 %) in benthic communities indicates a constant flow of organic substances, which are gradually utilized by the living component of coastal ecosystems. The comparative data of the ratio of the Sea of Azov indicator microalgae species with those of other seas of moderate latitudes are discussed.

THE LANDSCAPE INVESTIGATIONS AS NECESSARY PART OF BIOLOGICAL STUDY IN THE COASTAL ZONE TO THE QUESTION OF THE IMPACT OF CLIMATE CHANGE ON THE ECOLOGICAL STATE OF ARTIFICAL

2017 ◽  
Author(s):  
Artem Lapenkov ◽  
Artem Lapenkov ◽  
Yury Zuyev ◽  
Yury Zuyev ◽  
Nadezhda Zuyeva ◽  
...  
Keyword(s):  
Coastal Zone ◽  
Benthic Communities ◽  
Great Depth ◽  
Research Strategy ◽  
Biological Study ◽  
Lake Ladoga ◽  
Coastal Zones ◽  
Investigation Methods ◽  
Ground Conditions ◽  
The Impact

Coastal zones have great diversity of resources. The shallow water zones contain the most of plant and benthic communities. A description of relief and type of ground is needed for the rigorous monitoring of biota and environmental condition of coastal zone. Generally, on the basis of these data the investigation methods of the coastal zone are selected. The shallows research strategy has been developed by us for northern part of the Lake Ladoga. If the coastal areas are characterized by great depth and flat topography, then sonar’s can be used to describe them and samples of ground can be taken by bottom grabs. In the Lake Ladoga these methods don’t operate correctly by reason of the compound bottom relief and the fact that a sizeable part of the bottom is occupied by hard ground. Therefore, our investigations base on the diving transect method of Golikov and Skarlato (1965). A diver moves along transects. He registers the depth, length to coastline, water temperature, relief and ground, edificators and records video. In the laboratory all these data are decoded and used for mapping of bays. Studies of plant communities have been performed and strategy for research of benthic communities in complex relief and hard ground conditions has been developed based on the descriptions of shallow waters. Description of the Malay Nikonovskia Bay bottom has given an opportunity to estimate changes in the bottom of the bay under the influence of the trout farm.

Features of spring feeding of sterlet of the middle course of the Northern Dvina river

2020 ◽  
pp. 8-17
Author(s):  
A. Bykov ◽  
D. Palatov ◽  
I. Studenov ◽  
D. Chupov
Keyword(s):  
Benthic Communities ◽  
High Water ◽  
Food Composition ◽  
Fish Growth ◽  
High Water Content ◽  
Feeding Intensity ◽  
Biting Midges ◽  
Size Groups ◽  
Main Components ◽  
A Minor

The article provides information about the features of spring feeding of sterlet in the spawning grounds of the middle course of the Northern Dvina river in may 2019. The main and secondary groups of forage objects in the diet of this species of sturgeon are characterized. The article considers the variability of the sterlet food composition with an increase in the size of fish from 30 to 60 cm. In the process of fish growth in the diet of the Severodvinsk sterlet, the main components in terms of occurrence and mass in all size groups are the larvae of Brooks and chironomids. A minor occurrence was the larvae of midges, biting midges, stoneflies, mayflies and small clams. To random and seasonal food are the larvae of water bugs, butterflies, flies, beetles and eggs of other fish. The feeding intensity of the smaller sterlet (30–40 cm) was significantly higher than that of the fish in the size groups 40–50 and 50–60 cm. Fundamental changes in the diet of the Severodvinsk sterlet for the main food objects for more than sixty years of observations have not been established. During periods of high water content of the Northern Dvina due to seasonal changes in the structure of benthic communities, the value of Brooks in the diet of sterlet increases and the proportion of chironomids decreases.

Long Term Monitoring of the Macrobenthos of the Upper Clyde Estuary

1984 ◽  
Vol 16 (5-7) ◽  
pp. 359-373 ◽  
Author(s):  
Anne R Henderson
Keyword(s):  
Water Quality ◽  
Seasonal Variation ◽  
Organic Pollution ◽  
Long Term Changes ◽  
Pollution Loading ◽  
Faunal Density ◽  
History Of ◽  
Long Term Monitoring ◽  
Term Monitoring

The sublittoral macrobenthic invertebrate populations of the Upper Clyde Estuary are described. The estuary has a long history of organic pollution. The long term changes in species composition, faunal density and dominance patterns between 1974 and 1980 are presented. The fauna is dominated by brackish, pollution tolerant oligochaetes and polychaetes. Fluctuations in populations can be related to both seasonal variation in environmental conditions and long term improvements in water quality through a reduction in pollution loading to the estuary.

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