Subfossil Cladocera as a powerful tool for paleoecological reconstruction

Tolotti, Monica; Milan, M.; Szeroczyńska, Krystyna

doi:10.4081/aiol.2016.6467

Cited by 7 publications

(3 citation statements)

References 40 publications

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“…There is an increasing need to resolve the relationship between contemporary and subfossil Cladocera communities and to provide a reliable picture of whether the subfossil community is truly representative of the contemporary community [48][49][50]. Most of the published subfossil studies on Cladocera communities are specifically limited to examining deep and cold water bodies [51][52][53]. In contrast, we studied both contemporary and subfossil Cladocera communities in a shallow, temperate water body.…”

Section: Discussionmentioning

confidence: 99%

Community Response of Cladocera to Trophic Stress by Biomanipulation in a Shallow Oxbow Lake

Berta

Tóthmérész²,

Wojewódka-Przybył

et al. 2019

Water

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Studying contemporary and subfossil Cladocera (Crustacea) communities, we explored the effect of top-down stressors on the cladoceran communities; we are also interested in the coherence of the contemporary and subfossil communities. The studied Cibakháza oxbow lake is in E Hungary, on the left-floodplain of the River Tisza; it is a large, long, and shallow oxbow lake. Three areas of the oxbow lake were distinguished based on the strength of top-down stress: protected area with low top-down stress, biomanipulated area with high top-down stress, and recreational area with moderate top-down stress. Altogether, we identified 28 taxa in the contemporary and subfossil communities in the oxbow lake. We found that the species number of the contemporary Cladocera communities was lower (protected area: 13; biomanipulated area: 9, and recreational area: 14) than in the subfossil communities (protected area: 20; biomanipulated area: 16, and recreational area: 14). Among the environmental variables, we observed differences between the protected and biomanipulated area, while the recreational area showed a transition. Species number, abundances, and Simpson diversity also showed the effect of the fish introduction. There were no differences in beta-diversity among the contemporary and subfossil Cladocera community. The non-metric multidimensional scaling (NMDS) ordination showed that the biomanipulated area in the case of the contemporary communities was separated from the other areas, while in the case of the subfossil communities, there was no separation according to top-down stress. Our results showed that the number of species of contemporary Cladocera communities was lower in each area (3–10; 3–9; 5–9) compared to the subfossil communities (6–17; 7–12; 8–12). However, the highest abundances were found in the biomanipulated area due to the appearance of small-sized Cladocera species. Our findings suggest that the effect of a short-time fish introduction is restorable when the oxbow lake has a protected part.

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Section: Discussionmentioning

confidence: 99%

Community Response of Cladocera to Trophic Stress by Biomanipulation in a Shallow Oxbow Lake

Berta

Tóthmérész²,

Wojewódka-Przybył

et al. 2019

Water

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“…This can be achieved either by long term monitoring (e.g., Stow et al 1998;Lindenmayer and Likens 2009), which are very rare, or paleolimnology (e.g., Smol 1992;Saros 2009). Luckily, historical cladoceran community can be reconstructed using paleolimnological methods (Korhola and Rautio 2001) and, in fact, the group is deemed a powerful tool for environmental reconstruction (Tolotti et al 2016). Another highly important information, i.e., the exact point (or time) of community change, can be determined by applying statistical methods, such as broken-stick zonation (Bennett 1996), where significant changes in community are pinpointed or analysis of similarities, ANOSIM (Clarke 1993), which can be used as a test of significant difference between pre-and post-pollution communities.…”

Section: The Applicability Of Cladocera As Bioindicators/biomonitorsmentioning

confidence: 99%

An overview of Cladoceran studies conducted in mine water impacted lakes

Leppänen

2018

Int Aquat Res

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Mine-fed waters have been rigorously studied, but most of the ecological research on mine water has been conducted in riverine systems. Lakes, however, are known to recover from pollution more slowly than riverine systems and, thus, the impacts of mine water on lakes are equally interesting. One of the most important biological components in lakes are the Cladocera, an order of crustacean zooplankton. Cladocerans are regarded as excellent indicators of environmental change and, for example, genus Daphnia is one of the most used test organisms in ecotoxicology. While in vitro tests regarding pollutants and cladocerans have been reviewed multiple times, the literature regarding the community level responses to mine pollution in natural settings is still to be better explored. The main aim of this paper is to screen and compile the current literature related to cladoceran communities and mine-induced water pollution. In addition, the applicability of cladocerans as a bioindicators group in mine water studies will be explored. This review shows that cladocerans have been studied in many cases of mining related pollution and most of the research has been conducted in North America, central Europe and Brazil. Acidity, turbidity and metals pollution are nearly equally important in shaping cladoceran communities in mining impacted lakes. The most tolerant taxa to mining pollution are Bosmina spp. and Chydorus sphaericus. The group clearly has potential as community level bioindicator/biomonitor in mining pollution studies, but challenges remain. Namely, the lack of data regarding the most sensitive taxa is a major problem when indicator value of any single species is assessed.

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“…The chitinous bodies of Cladocera organisms can be well preserved in lake sediments and present some typical morphological characteristics useful for the identification at species level. Therefore, they are considered to be a good proxy for reconstructing lake responses to environmental changes (Zawisza and Szeroczyńska 2007;Alric et al 2013;Cheng et al 2020) and they have been widely used to track historical changes in lake either alone or in combination with other paleolimnological proxies (Tolotti et al 2016;Caballero et al 2020). Recent studies highlighted that the best way to track different aspects of past ecological responses to overlapping stressor is the multi-proxy approach, combining the analysis of paleolimnological biotic (e.g., subfossil cladoceran and diatoms frustules) and abiotic (e.g., inorganic and organic content) proxies and measured long-term data (e.g., air temperature, teleconnection indices) (Milan et al 2015;Perga et al 2015;Tolotti et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Cladocera paleocommunity to disentangle the impact of anthropogenic and climatic stressors on a deep subalpine lake ecosystem (Lake Iseo, Italy)

et al. 2021

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In big lakes with strong anthropogenic pressure, it is usually difficult to disentangle the impacts of climate variability from those driven by eutrophication. The present work aimed at the reconstruction of change in the species distribution and density of subfossil Cladocera in Lake Iseo (Italy) in relation to climate and anthropogenic pressure. We related subfossil Cladocera species composition and density in an 80-cm sediment core collected in the pelagic zone of Lake Iseo to long-term temperature trends and phosphorus concentration inferred by diatoms frustules. The Cladocera remains detected in Lake Iseo sediment reflected the species composition and density of modern pelagic Cladocera assemblages. Cladocera rapidly respond to environmental change, and that climate change combined with eutrophication can induce changes in community composition and species density. At the beginning of twentieth century, when global warming was not yet so accentuated, the nutrient increase in water resulted as the principal driver in determining the long-term development of plankton communities and pelagic food web structure. Moreover, catchment-related processes may decisively affect both species composition and density of the lake planktonic communities due to the decrease of lake water transparency induced by input of inorganic material from the catchment area to the lake. The paleolimnological investigation, through the combined study of biotic and abiotic factor, allowed clarifying the synergic effects of the most important drivers of change in lake ecosystems, suggesting that climatic factors should be considered with nutrient availability as determinant element in controlling the temporal development of plankton communities and pelagic food web structure.

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Subfossil Cladocera as a powerful tool for paleoecological reconstruction

Cited by 7 publications

References 40 publications

Community Response of Cladocera to Trophic Stress by Biomanipulation in a Shallow Oxbow Lake

Community Response of Cladocera to Trophic Stress by Biomanipulation in a Shallow Oxbow Lake

An overview of Cladoceran studies conducted in mine water impacted lakes

Cladocera paleocommunity to disentangle the impact of anthropogenic and climatic stressors on a deep subalpine lake ecosystem (Lake Iseo, Italy)

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