Lake morphometry and wind exposure may shape the plankton community structure in acidic mining lakes

Weithoff, Guntram; Moser, M.; Kamjunke, Norbert; Gaedke, Ursula; Weisse, Thomas

doi:10.1016/j.limno.2009.11.002

Cited by 20 publications

(27 citation statements)

References 34 publications

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“…The hydrochemical composition is remarkably similar in the study lakes; pH ranges from 2.3-2.8. Physico-chemical and biological features of these AML have been reported by Nixdorf et al (2003), Kamjunke et al (2005), Gaedke and Kamjunke (2006), Weithoff et al (2010), and Moser and Weisse (2011b). The AML at Langau (LG in the following) and the AML111 in Lusatia (ML111 in the following) are older than the adjacent AML130 (ML130 in the following); the latter is also the largest of the three study lakes (Table 1).…”

Section: Methodssupporting

confidence: 53%

Significant habitat effects influence protist fitness: evidence for local adaptation from acidic mining lakes

Weisse¹,

Berendonk²,

Kamjunke³

et al. 2011

Ecosphere

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Abstract. It is currently controversially discussed if the same freshwater microorganisms occur worldwide wherever their required habitats are realized, i.e., without any adaptation to local conditions below the species level. We performed laboratory experiments with flagellates and ciliates from three acidic mining lakes (AML, pH ;2.7) to investigate if similar habitats may affect similar organisms differently. Such manmade lakes provide suitable ecosystem models to test for the significance of strong habitat selection. To this end, we analyzed the growth response of three protist taxa (three strains of the phytoflagellate Chlamydomonas acidophila, two isolates of the phytoflagellate Ochromonas and two species of the ciliate genus Oxytricha) by exposing them to lake water of their origin and from the two other AML in a crossfactorial design. Population growth rates were measured as a proxy for their fitness. Results revealed significant effects of strain, lake (¼habitat), and strain 3 habitat interaction. In the environmentally most adverse AML, all three protist taxa were locally adapted. In conclusion, our study demonstrates that (1) the same habitat may affect strains of the same species differently and that (2) similar habitats may harbor ecophysiologically different strains or species. These results contradict the 'everything is everywhere' paradigm.

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Section: Methodssupporting

confidence: 53%

Significant habitat effects influence protist fitness: evidence for local adaptation from acidic mining lakes

Weisse¹,

Berendonk²,

Kamjunke³

et al. 2011

Ecosphere

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“…Flow cytometric analyses revealed abundances of 7.8 × 10 7 cells L −1 at 7.8 m depth, respectively 11.0 × 10 7 cells L −1 at 9 m depth. With an estimated L. buetschlii cell volume of 5900 μm 3 , this abundance yields an exceptionally high biomass of 50–70 mg C L −1 (Weithoff et al, 2010). Although we cannot rule out that some rare species were present in the monimolimnion of the AML, the flow cytometric histograms confirmed that no other eukaryotic organism occurred at abundances >5 × 10 4 cells L −1 .…”

Section: Resultsmentioning

confidence: 99%

“…(Nixdorf et al, 1998). Since no larger consumers were present in the AML and Lepocinclis is too large (∼35 μm) for most rotifers, Lepocinclis did not suffer from large grazing losses, which contribute to the formation of a DCM in many circumneutral lakes (Weithoff et al, 2010). Due to the absence of grazers Lepocinclis required only low growth rates to maintain its high abundance.…”

Section: Discussionmentioning

confidence: 99%

“…The wind exposed Lake 130 exhibited higher species richness. Weithoff et al (2010) concluded that lake morphometry in combination with wind-induced mixing strongly influences the community structure in these ML. The present article focuses on the biological properties and the food web structure of both lakes at Langau, with emphasis on changes in planktonic biodiversity induced by neutralization.…”

Section: Introductionmentioning

confidence: 99%

“…Because these two lakes are of identical origin and only separated from each other by a 7-m wide dam, the effects of neutralization on the physicochemical and biological properties of a ML can be deduced from a comparative analysis of both lakes. Weithoff et al (2010) already compared some general characteristics of the acidic lake at Langau to a similar AML in the Lusatian area (ML 130). Both lakes were similar in their chemical characteristics but differed in their morphometry and mixing type.…”

Section: Introductionmentioning

confidence: 99%

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The most acidified Austrian lake in comparison to a neutralized mining lake

Moser

Weisse

2011

Limnologica

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This study investigated two mining lakes located in the north of Lower Austria. These lakes arose 45 years ago when open cast lignite mining ceased. The lakes are separated by a 7-m wide dam. Due to the oxidation of pyrite, both lakes have been acidified and exhibit iron, sulphate, and heavy metal concentrations several orders of magnitude higher than in circumneutral lakes. The water column of both lakes is divided into two layers by a pronounced chemocline. The smaller mining lake (AML), with pH close to of 2.6, is the most acidic lake in Austria, whereas flooding with stream water and by drainage from the surrounding fields neutralized the adjacent larger pit lake. The goal of our study was to investigate the effect of flooding on its physical, chemical and biological properties, in comparison to the pristine AML. Even relative to other extremely acidic lakes, the flora and fauna in the AML was reduced and composed of only two flagellate, one ciliate, and one rotifer species. The simplified pelagic food web in the mixolimnion consisted of heterotrophic bacteria, the mixotrophic flagellates Chlamydomonas acidophila and Ochromonas sp., the ciliate Oxytricha sp., and the rotifer Cephalodella sp. The latter two are as yet undescribed new species. The heliozoan Actinophrys sp. that may act as top predator occurred only in low abundance. The euglenid Lepocinclis buetschlii formed a stable deep chlorophyll maximum (DCM) at 7 m depth. Highest cell numbers of L. buetschlii in the DCM exceeded 108 L−1. The neutralized mining lake harboured higher plankton diversity similar to that of natural circumneutral lakes. A peak of at least 16 different phytoplankton taxa was observed during summer. The zooplankton consisted of several copepod species, daphnids and other cladocerans, and at least six different rotifer species. Several fish species occurred in the neutralized lake. Although the effect of non-permanent flooding was largely sustainable, interannual fluctuations of the pH affected the plankton community and reduced its species diversity.

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Living on the edge: reproduction, dispersal potential, maternal effects and local adaptation in aquatic, extremophilic invertebrates

et al. 2019

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Lake morphometry and wind exposure may shape the plankton community structure in acidic mining lakes

Cited by 20 publications

References 34 publications

Significant habitat effects influence protist fitness: evidence for local adaptation from acidic mining lakes

Significant habitat effects influence protist fitness: evidence for local adaptation from acidic mining lakes

The most acidified Austrian lake in comparison to a neutralized mining lake

Living on the edge: reproduction, dispersal potential, maternal effects and local adaptation in aquatic, extremophilic invertebrates

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