Structure of chironomid assemblages along environmental and geographical gradients in the Bohemian Forest lakes (Central Europe): An exploratory analysis

Bitušík, Peter; Svitok, Marek

doi:10.2478/s11756-007-0063-y

Cited by 11 publications

(10 citation statements)

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“…As analyses of the recent chironomid fauna show (Bitušík & Svitok, 2006), lakes located at lower altitude are inhabited by a more diverse chironomid fauna than lakes at higher elevations (Laka Lake, Prášilské Lake). Although Plešné Lake is among the higher situated lakes, its chironomid species richness is relatively high.…”

Section: Discussionmentioning

confidence: 99%

“…However, all of these concentrate on changes during shorter periods than are presented in this paper. The first integrated information on the modern chironomid fauna in these lakes of the Bohemian Forest was given by Bitušík & Svitok (2006). The main aim of this paper is to describe the Holocene chironomid stratigraphy of Plešné jezero (Plešné Lake) and to provide a preliminary Holocene reconstruction of key environmental conditions in this area.…”

Section: Introductionmentioning

confidence: 99%

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Holocene subfossil chironomid stratigraphy (Diptera: Chironomidae) in the sediment of Plešné Lake (the Bohemian Forest, Czech Republic): Palaeoenvironmental implications

2006

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A faunal record of chironomid remains was analyzed in the upper 280 cm of a 543 cm long sediment core from Plešné jezero (Plešné Lake), the Bohemian Forest (Šumava, Böhmerwald), Czech Republic. The chronology of the sediment was established by means of 5 AMS-dated plant macroremains. The resolution of individual 3-cm sediment layers is ∼115 years and the analyzed upper 280 cm of the sediment core represent 10.4 cal. ka BP. As the results of DCA show, two marked changes were recorded in the otherwise relatively stable Holocene chironomid composition: (1) at the beginning of the Holocene (ca. 10.4-10.1 cal. ka BP) only oligotrophic and cold-adapted taxa (Diamesa sp., M. insignilobus-type, H. grimshawi-type) were present in the chironomid assemblages, clearly reflecting a cool climate oscillation during the Preboreal period, and (2) during an event dated in the interval 1540-1771 AD, when most taxa vanished entirely and only Zavrelimyia sp. and Procladius sp. were alternately present accompanied by Tanytarsus sp. Although, the age of this event is in agreement with the dating of the Little Ice Age, the most probable reason for the elimination of many chironomid taxa was very low sums recorded in this part of the sediment, rather than cool conditions connected with the LIA. Variations in the chironomid fauna after the Preboreal period were reflected mainly by changes in abundances of dominant taxa rather than by changes in species composition. These variations could be explained by: (1) climatic changes, namely temperature and amount of rainfall resulting in oscillations in lake level, with changes in the occurrence of macrophytes in the littoral and (2) increasingly dense afforestation which led to a considerable input of organic material into the lake and a subsequent increase in the trophic status of the lake water.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Holocene subfossil chironomid stratigraphy (Diptera: Chironomidae) in the sediment of Plešné Lake (the Bohemian Forest, Czech Republic): Palaeoenvironmental implications

2006

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“…A recent investigation based on pupal exuviae analysis (Bitušík & Svitok 2006) showed that differences in taxonomic composition among the Bohemian Forest lakes Brought to you by | MIT Libraries Authenticated Download Date | 5/12/18 6:34 AM could be explained significantly by lake alkalinity (as a proxy of pH). However, chironomids have so far not reflected the effects of acidification in the investigated lakes in such a dramatic way as mayflies and stoneflies (Vrba et al 2003).…”

Section: Discussionmentioning

confidence: 99%

Littoral macroinvertebrates of acidified lakes in the Bohemian Forest

Ungermanová¹,

Kolaříková²,

Stuchlı́k³

et al. 2014

Biologia

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Mountain lakes in the Bohemian Forest, on both the Czech and German sides, were atmospherically acidified mainly in the 1960s-1980s and have since been recovering from acidification. In 2007, we performed the first complete study on littoral macroinvertebrates in all eight lakes. The goals of the study were to 1) compare macroinvertebrates in the lakes during the process of recovery and 2) investigate relations between the occurrence of taxa and water chemistry. Lake water pH varied from 4.6 to 5.7, concentrations of dissolved reactive Al and labile Al ranged from 118-601 and 11-470 µg L −1 , respectively, and DOC concentrations were < 6 mg L −1 . Altogether 73 taxa were identified from all lakes; a positive relationship was found between pH and the number of macroinvertebrate taxa. The highest number of taxa was found in the least acidic lakes Laka and Grosser Arbersee, including the mollusk Pisidium casertanum. In contrast, the lowest diversity was found in the most acidified Čertovo jezero. Cluster analyses of macroinvertebrates and water chemistry suggested pH as the key factor influencing the occurrence of macroinvertebrate taxa. An interesting finding was the occurrence of the boreo-montane water beetle Nebrioporus assimilis in Prášilské jezero, which is the first documented record of this species in the Czech Republic since 1960.

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“…6), Sialis lutaria was reported from CN and GA already by Frič & Vávra (1897) and Klapálek (1903), respectively. Also, Bitušík & Svitok (2006) analysed recent Chironomid assemblages of all Bohemian Forest lakes from this survey that have suggested different grouping of the lakes.…”

Section: Discussionmentioning

confidence: 99%

Biological recovery of the Bohemian Forest lakes from acidification

et al. 2006

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A limnological survey of eight small, atmospherically acidified, forested glacial lakes in the Bohemian Forest (Šumava, Böhmerwald) was performed in September 2003. Water chemistry of the tributaries and surface layer of each lake was determined, as well as species composition and biomass of the plankton along the water column, and littoral macrozoobenthos to assess the present status of the lakes. The progress in chemical reversal and biological recovery from acid stress was evaluated by comparing the current status of the lakes with results of a survey four years ago (1999) and former acidification data since the early 1990s. Both the current chemical lake status and the pelagic food web structure reflected the acidity of the tributaries and their aluminium (Al) and phosphorus (P) concentrations. One mesotrophic (Plešné jezero) and three oligotrophic lakes (Černé jezero, Čertovo jezero, and Rachelsee) are still chronically acidified, while four other oligotrophic lakes (Kleiner Arbersee, Prášilské jezero, Grosser Arbersee, and Laka) have recovered their carbonate buffering system. Total plankton biomass was very low and largely dominated by filamentous bacteria in the acidified oligotrophic lakes, while the mesotrophic lake had a higher biomass and was dominated by phytoplankton, which apparently profited from the higher P input. In contrast, both phytoplankton and crustacean zooplankton accounted for the majority of plankton biomass in the recovering lakes. This study has shown further progress in the reversal of lake water chemistry as well as further evidence of biological recovery compared to the 1999 survey. While no changes occurred in species composition of phytoplankton, a new ciliate species was found in one lake. In several lakes, this survey documented a return of zooplankton (e.g., Cladocera: Ceriodaphnia quadrangula and Rotifera: three Keratella species) and macrozoobenthos species (e.g., Ephemeroptera and Plecoptera). The beginning of biological recovery has been delayed for ∼20 years after chemical reversal of the lakes.

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Structure of chironomid assemblages along environmental and geographical gradients in the Bohemian Forest lakes (Central Europe): An exploratory analysis

Cited by 11 publications

References 48 publications

Holocene subfossil chironomid stratigraphy (Diptera: Chironomidae) in the sediment of Plešné Lake (the Bohemian Forest, Czech Republic): Palaeoenvironmental implications

Holocene subfossil chironomid stratigraphy (Diptera: Chironomidae) in the sediment of Plešné Lake (the Bohemian Forest, Czech Republic): Palaeoenvironmental implications

Littoral macroinvertebrates of acidified lakes in the Bohemian Forest

Biological recovery of the Bohemian Forest lakes from acidification

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