Aquatic Oligochaeta (Annelida) of Dam Lakes Çatören and Kunduzlar (Turkey) (original) (raw)
Related papers
Aquatic Oligochaeta (Annelida) of Dam Lakes Çatören and Kunduzlar (Turkey)
Zoosymposia, 2014
Çatören and Kunduzlar Dam Lakes, located on Seydi River, represent the main irrigation water resources of the Seyitgazi District (Eskişehir Province), in west-central Turkey. The river and the reservoirs are both under the threat of pollution primarily originating from several domestic point source discharges and land-based runoff. The numerical and proportional distributions of oligochaetes in Çatören and Kunduzlar Dam Lakes were surveyed seasonally in 2010 and 2011 at two stations on each lake. According to the results of this study, the benthic invertebrate fauna of Çatören Dam Lake consisted of Oligochaeta (40.2 %), Chironomidae larvae (32.2 %) and the varia (27.6 %); the benthic invertebrate fauna of Kunduzlar Dam Lake consisted of Oligochaeta (56.7 %), Chironomidae larvae (18.2 %) and the varia (25.1%). By evaluating the data via a Shannon-Wiener index it was found that the Çatören Dam Lake had an index of 2.32; while Kunduzlar Dam Lake had an index of 3.27. Several physicoche...
In order to determine the oligochaeta fauna of Lake Sapanca (Turkey) samples were collected from 5 stations monthly, between September 2000-August 2001. As a result of the study, 13 species, which belong to 9 genera, were determined. These species are Aulodrilus limnobius, Tubifex tubifex, Tubifex ignotus, Tubifex nerthus, Limnodrilus hoffmeisteri, Potamothrix hammoniensis, Potamothrix vejdovskyi, Nais communis, Spirosperma ferox, Psammoryctides barbatus, Ilyodrilus templetoni, Psammoryctides deserticola, Paranais frici. Also some physicochemical parameters of the water (temperature, dissolved oxygen, pH, turbidity and depth) were measured at the sampling site. The average density of total oligochaetes in the benthos of the lake was 1,887 ind m-2. According to Shannon-Wiener index, Lake Sapanca was found had 2.59 richness and, 5 th station were found to have highest diversity (3.87) while 3 rd station to have the lowest (1.59). There are almost no data on the Oligochaeta fauna of this lake so far. Hence, all the determined taxa from the localities are recorded for the first time.
The community structure, distribution and biomass of oligochaetes from Izvoru Muntelui-Bicaz reservoir has been studied during 2006-2007. From the total number of benthic macroinvertebrates species identified in this period (28 species), 12 species were oligochaetes. Along with increasing of depth, from upstream to downstream, we observed a decrease of specific diversity as well as an increase of the oligochaetes individual numbers and biomass. From the total identified taxa for the whole lake area, Tubifex tubifex and Limnodrilus hoffmeisteri were dominant in the deep area, as numerical and biomass abundance. Rezumat. Studii privind distribuția și biomasa oligochetelor (Annelida) din lacul de acumulare Izvoru Muntelui-Bicaz. În perioada 2006-2007 s-au efectuat studii cu privire la structura, distribuția și biomasa comunităților de oligochete din lacul de acumulare Izvoru Muntelui-Bicaz. Din numărul total de specii de macronevertebrate bentonice identificate în această perioadă (28 ...
The oligochaetes from freshwaters of Montenegro were studied in order to improve the recent knowledge about their faunistics and their use as bioindicators of water and sediment quality in aquatic ecosystems. Samples of sediments were taken from 16 rivers, 6 lakes, 3 springs, 3 reservoirs, and 2 creeks, at 78 different sampling sites, during six years of research (2005–2011), from the Black Sea and the Adriatic Sea drainage basins. The oligochaete fauna of Montenegro includes 82 species, from 8 families. Thirty-six of them represent first records for the Montenegrin oligochaete fauna. Both qualitative and quantitative differences were found between the oligochaete fauna of the Black Sea and the Adriatic Sea drainage basins. Sixty-four oligochaete species were found in rivers, 30 species in lakes, 20 species in reservoirs, 14 in creeks, and 9 species in the studied springs. The highest diversity of oligochaete species among studied rivers was found in the Zeta River, among lakes in L...
Turkish Journal of Zoology, 2012
Many large and small lakes of varying depths are present in the Eastern Black Sea Range of Turkey, the nation's third most important glacial region following the Ağrı and Cilo-Sat mountain ranges. During the present study, 6 expeditions to collect aquatic oligochaetes from these lakes were conducted in July and August of 2005August of , 2006August of , and 2007; qualitative and quantitative samples were collected from 59 glacial lakes. We present and analyze the dominancy and distribution of aquatic oligochaete assemblages and their relation to environmental factors (temperature, dissolved oxygen, pH, electrical conductivity, salinity, turbidity, PO 4 -3 -P, HCO 3 -, organic carbon, hardness, Ca 2+ , Mg 2+ , Si, water depth, and altitude) using classifi cation and ordination techniques. Canonical correspondence analysis (CCA) was used to characterize the relationship between oligochaetes and the environmental variables. As a result, we determined the 4 most important environmental variables (elevation, water depth, dissolved oxygen, and temperature) aff ecting species distribution in general. Sampling localities were clustered into 8 groups with the unweighted pair-group method with arithmetic mean (UPGMA) based on physicochemical characteristics. Th e relationships between the total number of individuals and environmental measurements were determined by a simple analysis of variance (ANOVA) test. Th e results of our analyses suggest a signifi cant positive correlation between altitude (P < 0.05; F = 2.994) and the total number of individuals.
New data on aquatic oligochets (Oligochaeta Limicola) in the Burgas (Vaya) Lake
The Burgas Lake (Vaya) is a shallow wetland on the Black Sea coast, west of the city of Burgas. This natural lake is an important bird area along the Via Pontica flyway - the largest air highway for migratory birds from/to SE Europe. During the last 70 years however, the Vaya Lake has gone through essential changes, as shallowing, combined with flattening of the bottom, decreasing of the surface area and decreasing of salinity. The influence of various anthropogenic factors contributes to the alteration of the general picture of the lake. Some of these factors are the discharge of communal and industrial waste waters, the construction of a depot for technology wastes from oil refinery “LUKOIL-Neftohim Burgas” AD, the clogging of the channel, connecting the lake to the Black Sea and the construction of a drainage system. These lead to drying up of parts of the wetland area and disturbing the water balance of the lake by pumping out water for irrigation. Important role for the lake’s ...
A Study on the Zooplanktonic Fauna of the Dam Lakes Kunduzlar and Çatören (Kırka-Eskişehir)
Turk. J. Zool, 1998
In the present study, the zooplanktonic fauna of the Kunduzlar and Çatören dam lakes (Kırka basin-Eskişehir) was investigated during August 1994-June 1995. Eight species of Rotifera, five species of Cladocera and two species of Copepoda were identified in both dam lakes. In addition, the mean zooplankton abundance (ind. m-3) and physical and chemical parameters of dam lakes were given.
Eight years of monitoring aquatic Oligochaeta from the Baía and Ivinhema Rivers
2009
The aim of this study was to analyze the factors that influence spatial and temporal variations of the Oligochaeta assemblage in the Baía and Ivinhema Rivers, located in the Upper Paraná River floodplain (Mato Grosso do Sul State, Brazil). Samples of Oligochaeta were collected between February 2000 and November 2007. A total of 27 Oligochaeta species were identified. A Principal Component Analysis (PCA) of the physical and chemical variables was used to summarize the total variation in the data and to identify major environmental gradients. Detrended Correspondence Analysis (DCA) was conducted to verify possible spatial and temporal gradients in the Oligochaeta species distribution. The highest Oligochaeta species densities and richness values were recorded during limnophases. The intensity and amplitude of the potamophase influenced the density, richness and composition of Oligochaeta since many species were transported by high water current velocities and/or died due to the low oxygen levels that are characteristic of this phase. L. hoffmeisteri, P. descolei and A. pigueti were recorded in the potamophase and in the limnophase and we concluded that they are adapted to different conditions of rivers (lotic and lentic) due to the presence of these species during the entire study period in both rivers. Nevertheless, these species were dominant in the potamophase periods of these rivers as they have body adaptations to survive in these conditions.
Zoosymposia
Bottom-living oligochaetes and chironomid larvae, thanks to their supposedly integrative power, could provide more robust measures of the water quality of lakes than separate chemical data. The oligochaete fauna of the large lakes of southern Scandinavia has been studied in detail over many years—often 100 years or more (Milbrink, 2020). Characteristic species associations and the ecological preferences of each oligochaete species are thus relatively well-known. In Milbrink (2020) it was shown that the precision could be greatly improved if the relationship between oligochaete species and chemical data could be instead demonstrated within a morpho-edaphic index framework (Ryder et al. 1974). The percentage composition and total abundance of oligochaetes per sample in a number of large lakes or selected basins of large lakes in southern Sweden and Norway were thus tested against this index in the 1970s (Milbrink, 1978). The trophic change which had taken place in the oligotrophic Lak...
Hydrobiologia, 2000
Within the Danube River delta's lakes the Oligochaeta communities comprise between 7.9% and 36.2% of the total biomass of benthic fauna. Their importance in energy flow at the ecosystem level changed in relation to fast trophic transition of all shallow lakes to the hypertrophic state. The parameters of the energy budget of the dominant populations and the potential production of benthivorous fish species assessed during 1976-1994 interval support this conclusion. P/B ratio, K 1 and K 2 coefficients assessed for both the 1976-1980 and 1991-1994 intervals revealed different functional patterns of response of Potamothrix hammoniensis (Michaelsen, 1901) and Limnodrilus hoffmeisteri (Claparede, 1862) to varying trophic conditions. Changes in communities structure, size of the constituent populations and their age distribution, as well as the quantity and quality of food supply and level of hypoxia at the sediment/water interface were the main factors that affected the role of these populations as energy carrier from the huge energy pool represented by sedimented organic carbon to benthivorous fish species.