Cladocera and geochemical evidence from sediment cores show trophic changes in Polish dystrophic lakes

Zawiska, Izabela; Zawisza, Edyta; Woszczyk, Michał; Szeroczyńska, Krystyna; Spychalski, W.; Correa‐Metrio, Alexander

doi:10.1007/s10750-013-1482-0

Cited by 13 publications

(12 citation statements)

References 26 publications

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“…were here considered as epibenthic generalists, occurring on both sediment surfaces and among vegetation. Despite the lack of detailed autecological information on most of the chydorid taxa, they have been used in previous palaeolimnlogical studies to indicate specific habitats and catchment-lake processes, since they seem to be especially sensitive in responding to changes through their littoral habitats (L opez- Blanco, Miracle & Vicente 2011;Nevalainen 2012;Zawiska et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Relationship between cladoceran (Crustacea) functional diversity and lake trophic gradients

Nevalainen

Luoto

2016

Functional Ecology

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Summary Functional diversity (FD) as a biodiversity measure has an explicit role in ecosystem functioning because the effects of environmental changes in ecosystems are determined by biological functions, such as feeding type and trophic position, of particular species. We evaluated the usability of functional characterization and FD of an aquatic keystone group (Crustacea: Cladocera) for enhancing the understanding of long‐term lake functional responses to environmental changes. The aims were to separate ecologically significant functional groups, investigate succession of such functional groups during nutrient enrichment process and determine the relationship between FD and lake productivity using a palaeolimnological approach. We selected two eutrophicated study lakes from southern Finland for down‐core investigations, one with a centennial (past c. 350 years) and the other with a decadal (past c. 70 years) nutrient enrichment record. Cladoceran microfossils in the sediment cores were used to determine the taxonomic structure of the past communities. Ecologically relevant functional characteristics were determined to separate functional groups by utilizing a functional dendrogram and a weighted community‐based FD index together with a set of multidimensional FD indices. The indices were applied to the down‐core assemblages. The functional dendrogram separated cladocerans into functional groups where habitat type principally separated open‐water filterers and predators from epibenthic scrapers and detritivores. Further separation in the pelagic branch was based on body size and feeding and among the benthic branch body shape. Functional assemblages changed markedly during the nutrient enrichment process. In the early stage of eutrophication, the largest functional changes were caused by small planktonic filterers and predators. Small filterers and epibenthos responded strongest during the eutrophic–hypereutrophic succession. FD had a positive long‐term relationship with lake trophic status until eutrophic conditions that was likely caused by diversifying resources and versatile food webs. Under hypereutrophic conditions, and especially at a decadal temporal resolution, alternating predation regimes caused variance to FD. In the current records, cladoceran FD was positively related to lake productivity and bottom‐up controls during the early stages of eutrophication in the long‐term record but top‐down controls apparently were more important at a decadal scale and under hypereutrophic conditions.

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Section: Discussionmentioning

confidence: 99%

Relationship between cladoceran (Crustacea) functional diversity and lake trophic gradients

Nevalainen

Luoto

2016

Functional Ecology

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“…Colours in cluster branches indicate cluster groups: red-group I, black-group II, blue -group III. The colour of the lake name indicates (pelagic) black and littoral (green) samples Alonella excisa and Acroperus harpae are considered representative of oligotrophic, low nutrient and acidic lakes (Fryer 1968(Fryer , 1991Whiteside 1970;Rautio 1998;Bjerring et al 2009;Nevalainen et al 2013;Zawiska et al 2013). However, it has been suggested that these two species are also very successful in soft water lakes because of their low calcium demands (Ca +2 ) (Nevalainen et al 2013).…”

Section: Discussionmentioning

confidence: 99%

“…Cladocera show a strong response to environmental factors, such as trophic state (Szeroczyńska 1991, Zawisza andChen et al 2010), total phosphorus concentration (Brodersen et al 1998;Amsinck et al 2005;Chen et al 2010), water depth (Korhola et al 2005;Nevalainen 2011;Gałka et al 2014), temperature (Lotter et al 1997;Korhola 1999;Mirosław-Grabowska and Zawisza 2013;Zawiska et al 2015), etc. Cladocera species are especially responsive to changes in pH, reflecting their sensitivity to acidification (Locke and Sprules 2000;Nevalainen et al 2013;Zawiska et al 2013). …”

Section: Introductionmentioning

confidence: 99%

“…Dystrophic lakes are described as natural and immutable ecosystems Zawiska et al 2013). These water bodies have several distinctive features, notably, high amounts of organic acids, brown-coloured water, acidic water, low visibility and conductivity.…”

Section: Introductionmentioning

confidence: 99%

“…This dystrophication index takes into account water pH, conductivity and DOC/DIC ratio; lakes with an HDI value higher than 40 are considered dystrophic (Górniak 1996(Górniak , 2006Keskitalo and Eloranta 1999). In the area of WNP, dystrophic lakes are associated with an HDI ranging from 45 to 121 (Górniak 2006;Zawiska et al 2013). This wide range reflects a high variability of hydrochemical conditions in the lakes and represents a starting point for our Cladocera study.…”

Section: Introductionmentioning

confidence: 99%

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Cladocera Community Composition as a Function of Physicochemical and Morphological Parameters of Dystrophic Lakes in NE Poland

2016

Self Cite

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Cladocera are one of the most important freshwater biological indicators for a wide range of environmental variables. They show strong responses to several environmental factors (e.g., trophic state, water depth, temperature) and are very sensitive to changes in water pH. The main interest of this study was to evaluate the relationship between subfossil Cladocera community composition and environmental properties of dystrophic lakes (pH, water transparency, conductivity, dissolved oxygen, depth and area). We hypothesize that Cladocera species composition depends on a dystrophication index (HDI); thus, Cladocera assemblages change with the degree of dystrophication. For the study, we selected a group of dystrophic lakes located in Wigry National Park (WNP), NE Poland, where we found subfossil remains of 24 Cladocera species belonging to four families (Chydoridae, Bosminidae, Daphniidae, and Sididae). A non-metric multidimensional scaling (NMDS) was used to elaborate on the similarities among samples in cladoceran-community composition and structure. Statistical analyses showed that Cladocera assemblages in all the studied lakes were similar, and individual Cladocera species respond to the measured environmental parameters (e.g., pH, lake size and depth). Our results suggest that in dystrophic lakes, Cladocera community composition is an emerging characteristic of individual species responses to the environment.

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Cladocera and geochemical evidence from sediment cores show trophic changes in Polish dystrophic lakes

Cited by 13 publications

References 26 publications

Relationship between cladoceran (Crustacea) functional diversity and lake trophic gradients

Relationship between cladoceran (Crustacea) functional diversity and lake trophic gradients

Cladocera Community Composition as a Function of Physicochemical and Morphological Parameters of Dystrophic Lakes in NE Poland

Forty years of my adventures with Cladocera remains: retrospection on my scientific work

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