Niche separation by littoral-benthic Chydoridae (Cladocera, Crustacea) in a deep lake - potential drivers of their distribution and role in littoral-pelagic coupling

Adamczuk, Małgorzata

doi:10.4081/jlimnol.2014.884

Cited by 40 publications

(26 citation statements)

References 36 publications

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“…; Perga et al . ; Adamczuk ), since, for example, the abundance and size of zooplankters are related to the presence of planktivorous fish and the littoral–benthic taxa are an important food resource for pelagic fish.…”

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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“…Community composition of non-pelagic cladocerans is strongly influenced by physical and chemical factors such as depth, pH, temperature, conductivity and total organic carbon (TOC). Depth is an important factor determining the distribution of benthic chydorids in a lake, even within the littoral zone (Adamczuk, 2014). Different patterns of distribution can be observed along a depth gradient, forced by UV exposure, thermal properties, food resources and the predators associated with these varying depths (Nevalainen, 2012).The community structure of chydorids is affected by pH (Sa-ardrit, 2002;…”

Section: Introductionmentioning

confidence: 99%

“…de Eyto et al, 2003;Nachai, 2006;Belyaeva and Deneke, 2007;Adamczuk, 2014) to such an extent that it influences their distribution on a geographical scale (de Eyto et al, 2003). The segregation of some chydorids in lakes may also be related to temperature and conductivity (Sa-ardrit, 2002;Nevalainen, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Finally, TOC influences chydorids indirectly, with correlations between high TOC concentrations and elevated densities of some Chydoridae, suggesting that these species could prefer areas of higher productivity. They can also utilize organic matter suspended in the water (Adamczuk, 2014). Moreover, the density of zooplankton communities fluctuates in relation to the period (season), even in the tropics (Guevara et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Spatial and temporal variation of Cladocera in a tropical shallow lake

Choedchim

Damme

Maiphae

2017

Ann. Limnol. - Int. J. Lim.

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We studied cladoceran species richness, community composition, habitat preference and density in three spatial habitats over 1 year at Thale-Noi, a large shallow tropical lake in southern Thailand. Monthly sampling conducted with activity traps deployed overnight in littoral (Hydrilla and Ceratophyllum beds), open water (Hydrilla beds) and marginal zone (Utricularia beds), revealed that the macrophyte beds support similar cladoceran diversities regardless of the habitat. Total species richness in all studied habitats ranged between 30 and 34 species, supporting up to 22 species in a trapping area of 0.09 m 2 at peak times, the majority belonging to the Chydoridae. In total, 40 species were recorded over the year, half of which were chydorids. Mixed cladoceran densities reached maxima of 160 333 ind.m x2 for a single habitat at a given moment. The dominant species included Chydoridae (Anthalona, Kurzia, Dunhevedia and Ephemeroporus), Daphniidae (Ceriodaphnia), Macrothricidae (Macrothrix) and Ctenopoda (Latonopsis). Monthly variation in species richness was most obvious in the littoral zone, whereas monthly variation in densities occurred at all sites. Community composition and habitat preference were mainly structured by depth and pH, resulting in different assemblages per habitat, but with uniform communities in the littoral (Hydrilla and Ceratophyllum) beds in a single area. This study presents the first ecological survey of Cladocera using activity traps in a shallow tropical lake.

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“…All three species are widely encountered in different types of freshwater bodies (Duigan, 1992;Illyová and Némethová, 2005). Cladocerans present in peat pits were fairly eurytopic, as they also inhabit the macrophyte zone of hard-water lakes (Adamczuk, 2014). Similarly, Copepoda communities did not distinguish peat pools from other aquatic ecosystems, as M. leuckartii, dominant in the acidic peat pools, and T. crassus, dominant in the alkaline peat pools, are widely distributed in European freshwater bodies of many other types (Nilssen and Waervågen, 2000).…”

Section: Discussionmentioning

confidence: 99%

Trophic interactions among the heterotrophic components of plankton in man-made peat pools

2017

Self Cite

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Man-made peat pools are permanent freshwater habitats developed due to non-commercial man-made peat extraction. Yet, they have not been widely surveyed in terms of ecosystem functioning, mainly regarding the complexity of heterotrophic components of the plankton. In this study we analysed distribution and trophic interrelations among heterotrophic plankton in man-made peat pools located in different types of peatbogs. We found that peat pools showed extreme differences in environmental conditions that occurred to be important drivers of distribution of microplankton and metazooplankton. Abundance of bacteria and protozoa showed significant differences, whereas metazooplankton was less differentiated in density among peat pools. In all peat pools stress-tolerant species of protozoa and metazoa were dominant. In each peat pool five trophic functional groups were distinguished. The abundance of lower functional trophic groups (bacteria, heterotrophic nanoflagellates (HNF) and ciliates feeding on bacteria and HNF) was weakly influenced by environmental drivers and was highly stable in all peat pool types. Higher functional trophic groups (naupli, omnivorous and carnivorous ciliates, cladocerans, adult copepods and copepodites) were strongly influenced by environmental variables and exhibited lower stability. Our study contributes to comprehensive knowledge of the functioning of peat bogs, as our results have shown that peat pools are characterized by high stability of the lowest trophic levels, which can be crucial for energy transfer and carbon flux through food webs.

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Niche separation by littoral-benthic Chydoridae (Cladocera, Crustacea) in a deep lake - potential drivers of their distribution and role in littoral-pelagic coupling

Abstract: ABSTRACT

Cited by 40 publications

References 36 publications

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

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

Spatial and temporal variation of Cladocera in a tropical shallow lake

Trophic interactions among the heterotrophic components of plankton in man-made peat pools

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