Spatial distribution of juvenile and adult stages of limnetic Cladocera in relation to selected environmental factors

Adamczuk, Małgorzata

doi:10.4081/jlimnol.2012.e11

Cited by 13 publications

(9 citation statements)

References 38 publications

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“…The mass appearance of algae has been observed in Lake Syczyńskie in all seasons. Phytoplankton photosynthesis led to increase of pH in lake waters (Toporowska and Pawlik-Skowrońska 2014), worsen light conditions and as a consequence simplified water biocenosis (Adamczuk 2012). The pattern of pH changes along the transect inflow-outflow was characterized by higher pH in the outlet than in inlet, which was consistent with other studies (Billett and Moore 2008).…”

Section: Discussionsupporting

confidence: 86%

The variability of conditions of carbonate allocation on the example of a small flow-through Łęczna-Włodawa lake (Eastern Poland)

Ferencz

Dawidek

2014

Environ Earth Sci

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A synthetic index LSI (Langelier Saturation Index) was calculated to analyze conditions of carbonates allocation. The higher LSI value, positive or negative, the better conditions to deposition or chemical denudation, respectively. Physical-chemical research was carried out in the lake-catchment system of Lake Syczyńskie, located in the border zone of Polish Lowland and Lublin Upland. The data were collected during the three water years [2007][2008][2009]. A hydro-chemical state of products of CaCO 3 dissociation in waters was close to the equilibrium for most of the year. Values of the LSI ranged from -0.08 to 1.44 in the water of the catchment under study. The highest LSI values were observed in the lake water. The lowest LSI values occurred in waters of the inlet originated from a Cretaceous spring. Allocation conditions were established along inlet-lake-outlet transect. A decrease of carbonates translocation along the transect was typical for the Lake Syczyńskie and it occurred in all seasons. A clear seasonality of the carbonate equilibrium state was observed in the lake-catchment system under study. Results showed that inlet of groundwater determined transport of products of calcium and magnesium carbonate dissociation in the catchment Lake Syczyńskie. The most stable chemical conditions were observed in winter, which resulted from an intense groundwater inflow. The least stable conditions occurred in spring, in which season conditions of carbonates allocations were modified by precipitation and/or surface runoff.

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Section: Discussionsupporting

confidence: 86%

The variability of conditions of carbonate allocation on the example of a small flow-through Łęczna-Włodawa lake (Eastern Poland)

Ferencz

Dawidek

2014

Environ Earth Sci

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“…At lower trophic levels, both under low and high SD, crustaceans negatively influenced ciliates and HNF, while positive correlations between bacteria and crustaceans were found. The lack of expected evidence between planktivorous fish and crustaceans probably resulted from the ability of the latter community to conduct horizontal and vertical migrations to avoid predation pressure (Wissel et al, 2003;Adamczuk, 2012;Adamczuk and Mieczan, 2013). Therefore, in conditions of high transparency, the active choice of crustacean plankton to avoid predatory pressure could hamper topdown control and influence interactions at lower trophic levels, thus converge them to those in conditions of low water transparency.…”

Section: Contribution Of Environmental Factors To Food Web Relationsmentioning

confidence: 99%

Indirect effect of environmental factors on interactions between microbial and classical food webs in freshwater ecosystems

Adamczuk

Mieczan

Nawrot

et al. 2015

Ann. Limnol. - Int. J. Lim.

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-The role of environmental factors in aquatic ecosystems results from basic lake characteristics, human disturbances ('cultural eutrophication') and climate-related trends in the physical and chemical components of lakes. Although the influence of environmental factors on the abundance of aquatic animals is fairly well documented, less has been done to research their influence on food web interactions. The aim of the study was to evaluate microbial and classical food webs in lakes, with special emphasis placed on the role of environmental factors as influencing strengths. Variation partitioning, based on redundancy analysis, revealed that environmental factors played the most important role in structuring aquatic communities by accounting for 87.5% of their variation. Among all the factors measured, total solids (TS), transparency (Secchi disc) and temperature were most closely related to the variation in trophic communities. The analyses of food web interactions under low and high levels of those factors revealed that they differently influenced strengths among food web components. The strongest relations among distinct trophic levels were found under conditions of low TS, the lowest number of relations was found under conditions of low temperature. Only in low TS did bacteria correlate significantly with biogenes. Under high TS, bacteria positively influenced plenty of higher trophic levels. Top-down control was observed under conditions of high temperature. Conditions of low and high transparency did not diversify food web interactions. The obtained results can broaden our knowledge of the response of food webs to environmental factors in advanced stages of global eutrophication of water bodies and in the early stage of projected trends of global climate change.

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“…A relatively large group of species selected habitats according to conductivity values. Some papers have reported a significant (negative or positive) effect of conductivity of planktonic cladocerans (Green et al, 2005;Adamczuk, 2012), and the present study shows that this factor significantly influenced the distribution of some littoral-benthic species. Nevalainen (2012) found segregation of some chydorids in relation to temperature, but in Lake Piaseczno temperature turned out to be an unimportant factor.…”

Section: Chydoridae Versus Environmental Variablesmentioning

confidence: 67%

“…In lakes with clearly distinguished pelagic and littoral zones, limnetic and littoral-benthic species show characteristic spatial distribution. Limnetic species exist in the whole of a lake, but their density is much higher in the pelagic zone, and their occurrence in the littoral zone differs seasonally and corresponds to developmental stage (Adamczuk and Mieczan, 2013) and environmental variables (Adamczuk, 2012). The occurrence of littoral-benthic cladocerans is restricted mainly to the littoral zone.…”

Section: Introductionmentioning

confidence: 99%

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

Adamczuk

2014

J Limnol

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Spatial distribution of juvenile and adult stages of limnetic Cladocera in relation to selected environmental factors

Abstract: ABSTRACT

Cited by 13 publications

References 38 publications

The variability of conditions of carbonate allocation on the example of a small flow-through Łęczna-Włodawa lake (Eastern Poland)

The variability of conditions of carbonate allocation on the example of a small flow-through Łęczna-Włodawa lake (Eastern Poland)

Indirect effect of environmental factors on interactions between microbial and classical food webs in freshwater ecosystems

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

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