Benthos of Lake Glubokoe

Sokolova, N.; Izvekova, E. I.

doi:10.1007/bf00007482

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…The low values of diversity (H = 1.84) did not reflect a suppressed environment since they were not combined with low values of the index of eveness (J = 0.747). The observed decline was attributed mainly to the reduction of chironomid species bathymetricaly (Terek, 1980;Solokova & Izvekova, 1986). T.punct@ennis was found in the littoral zone (Pinder & Reiss, 1983), L. hofmeisteri in all depths with preference for littoral and sublittoral (Brinkhurst, 1964) and P. (Holotanypus) in the profundal (Terek, 1980;Pinder & Reiss, 1983).…”

Section: Discussionmentioning

confidence: 99%

Benthic macrofauna of Tavropos reservoir (central Greece)

Petridis¹,

Sinis

1993

Hydrobiologia

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The study revealed a mature reservoir with a balanced benthic community rich in chironomid species. Dominant species in numbers and frequency of occurrence were Tanypus punctipennis, Procladius (Holotanypus), Limnodrilus hoffmeisteri, Chironomus plumosus and Dreissena polymorpha, which classified the system as an oligotrophic Tanypus type. The littoral zone was dominated by T. punctipennis followed by Cladotanytarsus mancus. The chironomid P. (Holotanypus) prevailed in the profundal and the oligochaete L. hofmeisteri in the zone of the second thermal stratification (12-15 m).The mean total population density was relatively low (618 individuals/m2). Benthic population density showed a sigmoidal curve with depth increase, typical of oligotrophic lakes. Chironomids dominated the littoral zone. Species diversity and richness declined with depth.

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Section: Discussionmentioning

confidence: 99%

Benthic macrofauna of Tavropos reservoir (central Greece)

Petridis¹,

Sinis

1993

Hydrobiologia

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Benthos of Lake Mikri Prespa (North Greece)

Petridis¹,

Sinis

1995

Hydrobiologia

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An extensive sampling of Lake Mikri Prespa was carried out in summer 1990, aimed at evaluating benthic abundance, recording the species involved and detecting their response to some environmental variables. Three oligochaete species are endemic to the region, Potamothrixprespaensis, Psammoo,ctides ochridanus variabilis and Psammoo'ctides ochridanus typica. The bathymetric curve of the benthos resembles that of eutrophic lakes. A great abundance of Chironomus plumosus and Chaoborusflavicans occurred. Four community patterns were revealed by TWINSPAN analysis, division level two, explicitly discriminated by the influence of substrate type, depth, C/N ratio and pH. Species richness and diversity was minimal in the profundal and maximal in the shallows, whilst the equitability index was high in all site groups. Depth and bottom type were the most important variables in defining species distribution. More precisely, Chironomus plumosus, Chaoborus flavicans and Pommothix hammoniensis were ubiquitous, preferring mostly deep waters. Tanymrsus sp., Einfeldia dissidens, Cladopelma lateralis, Tanypus ptmctipemlis and Potamothrix prespaensis favoured shallower and less productive waters with a bottom rich in decaying plant fragments, and the Psammoo,ctides species showed a littoral origin and regular occurrence on gravel beds. A few species displayed a particular distribution with changes of depth, C/N ratio and pH.

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Bathymetric distribution of chironomid larvae (Diptera: Chironomidae) in Lake Saiko, Japan

Yoshizawa

Yoshida

et al. 2012

Lakes & Reservoirs

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The distribution of benthic macroinvertebrate on 8 March 2009 was studied in Lake Saiko (73.2 m maximum depth). The average density of the benthic community for the entire lake was 19 583 individuals m−2, being comprised of oligochaetes and chironomid larvae, with densities of 18 163 (92.8%) and 1274 (6.5%), respectively. The average wet weights of oligochaetes and chironomid larvae were 15.96 and 1.67 g m−2, respectively. The oligochaetes inhabited the entire lake bottom, with their densities being higher in the transitional region (20–40 m) and deeper region (>40 m) than in the shallower region. However, the densities of chironomid larvae were low in the deeper region (>40 m), with only a few chironomid larvae being found in the centre of the lake (>60 m). The most abundant species (Micropsectra chuzeprima) exhibited the widest distribution (from 10.1 to 65.5 m depth), followed by Polypedilum nubeculosum. The results of this study also were compared to previous data on oligochaetes and chironomid larvae reported by Kitagawa (1973). The density of these animals increased throughout the whole lake in 2009. However, the chironomid species compositions did not changed. The larval distribution pattern of chironomid changed since Kitagawa’s study, being distributed from 11 to 68 m in 1973. In contrast, almost all chironomid larvae were found in the transitional (e.g. M. chuzeprima) and shallower (e.g. Procladius choreus and P. nubeculosum) regions in 2009, with only a few individuals being observed in the deeper regions (>60 m). In contrast, the oligochaete density increased in the deeper regions. Large environmental changes must have affected the oligochaetes and chironomids densities, especially in the deeper regions with low dissolved oxygen concentrations. Consequently, the distribution pattern of oligochaetes and chironomids in the lake has changed. These study findings suggest the lake is experiencing increasing eutrophication.

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Benthos of Lake Glubokoe

Cited by 3 publications

References 2 publications

Benthic macrofauna of Tavropos reservoir (central Greece)

Benthic macrofauna of Tavropos reservoir (central Greece)

Benthos of Lake Mikri Prespa (North Greece)

Bathymetric distribution of chironomid larvae (Diptera: Chironomidae) in Lake Saiko, Japan

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