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Berg, M.S. van den; Coops, H.; Noordhuis, Ruurd; Schie, John van; Simons, J.

doi:10.1023/a:1017094013491

Cited by 108 publications

(14 citation statements)

References 21 publications

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“…They found that C. mancus group was characteristic of the littoral zones of the eutrophic lakes Tjeukemeer and Haringvliet. This taxon seems to be eutrophic, but according suggestion of Van den Berg et al (1997), as well as by the results of this study, oxygen-stress sensitive species. It is possible that type of sediment has additional influence of C. mancus group distribution.…”

Section: Dynamics Of the Limnological Characteristicssupporting

confidence: 74%

Factors affecting distribution pattern of dominant macroinvertebrates in Mantovo Reservoir (Republic of Macedonia)

Slavevska-Stamenković¹,

Paunović

Smiljkov³

et al. 2012

Biologia

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Abstract:In the present study, we analysed spatial and temporal heterogeneity of the limnological characteristics to provide more detailed information about the processes taking place within Mantovo Reservoir (Republic of Macedonia). The relationship between principal macroinvertebrate species and environmental variables was analysed in order to explore factors that dominantly affect community distribution pattern. Unlike the most reservoirs, strong longitudinal gradient for suspended organic matter and nutrients (total phosphorous, nitrates and nitrites) along the reservoir doesn't exist. However, the process of thermal stratification has a strong influence on the metabolism and structure of the Mantovo ecosystem, which can be demonstrated by the vertical and longitudinal distribution of dissolved oxygen (DO), CO2, pH and metals concentrations. Canonical Correspondence Analysis (CCA) indicated that the main factors controlling spatial distribution of Limnodrilus hoffmeisteri and Chironomus plumosus group were temperature, dissolved oxygen and manganese, including sulphates for C. plumous group. Chaoborus crystallinus showed opposite distribution pattern. Cladotanytarsus mancus group was strongly associated with shallower part (littoral and sublittoral) of Mantovo Reservoir characterized by favourable oxygen condition. None of the environmental variables included in CCA showed any relationship with density of Procladius sp.

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Section: Dynamics Of the Limnological Characteristicssupporting

confidence: 74%

Factors affecting distribution pattern of dominant macroinvertebrates in Mantovo Reservoir (Republic of Macedonia)

Slavevska-Stamenković¹,

Paunović

Smiljkov³

et al. 2012

Biologia

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“…Competition is likely to be especially strong for nitrogen. Although phosphorus availability in the water column can be reduced because of uptake by submerged macrophytes (11), many studies show unaltered or even increased ortho-P levels after increased macrophyte cover (12)(13)(14)(15). By contrast, submerged nitrogen concentrations in the water column of submerged vegetation stands are often below detection levels (15,16).…”

mentioning

confidence: 99%

Floating plant dominance as a stable state

Scheffer

Szabó

Gragnani

et al. 2003

Proc. Natl. Acad. Sci. U.S.A.

343

295

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Invasion by mats of free-floating plants is among the most important threats to the functioning and biodiversity of freshwater ecosystems ranging from temperate ponds and ditches to tropical lakes. Dark, anoxic conditions under thick floating-plant cover leave little opportunity for animal or plant life, and they can have large negative impacts on fisheries and navigation in tropical lakes. Here, we demonstrate that floating-plant dominance can be a self-stabilizing ecosystem state, which may explain its notorious persistence in many situations. Our results, based on experiments, field data, and models, represent evidence for alternative domains of attraction in ecosystems. An implication of our findings is that nutrient enrichment reduces the resilience of freshwater systems against a shift to floating-plant dominance. On the other hand, our results also suggest that a single drastic harvest of floating plants can induce a permanent shift to an alternative state dominated by rooted, submerged growth forms.D ense mats of free-floating plant have an adverse effect on freshwater ecosystems because they create anoxic conditions that strongly reduce animal biomass and diversity (1). Invasions by introduced exotic species are partly responsible for the increase of floating plant dominance. The problems caused by Eichhornia crassipes, Pistia stratiotes, and Salvinia molesta are notorious: they hamper fish production and navigation in tropical regions around the world (2-4). However, eutrophication is likely to have boosted the spread of free-floating plants, too. In temperate climate zones, it is known that dense beds of duckweeds (Lemnaceae) and small, floating water ferns (Azollaceae) are a symptom of high-nutrient loading in small water bodies, such as ponds and canals (5, 6). Just as in the case of tropical plant beds, the dark and anoxic conditions under thick duckweed cover leave little opportunity for animal or plant life (1).The dependence of free-floating plants on high nutrient concentrations in the water is an obvious consequence of their growth form. They have no direct access to the sediment pool of nutrients, and they have a large portion of their leaf surface exposed to the atmosphere rather than to the water, thereby reducing the possibility of taking up nutrients other than carbon through their leaves. By contrast, rooted submerged macrophytes may take up a large part of their nutrients from the sediment (7, 8) and also use their shoots effectively for nutrient uptake from the water column (9, 10). Although floating plants are obviously superior competitors for light, submerged plants may affect the growth of free-floating plants through a reduction of available nutrients in the water column. Competition is likely to be especially strong for nitrogen. Although phosphorus availability in the water column can be reduced because of uptake by submerged macrophytes (11), many studies show unaltered or even increased ortho-P levels after increased macrophyte cover (12-15). By contrast, submerged nitrogen co...

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“…Valvata piscinalis was the most abundant gastropod in Warniak, similarly as in a shallow Dutch lake Veluwemeer (Van Den Berg et al 1997), but its density in Warniak was at least a hundred times smaller. The density of Unionidae in lake Warniak, especially that of A. cygnea, was comparable to the values reported from some oxbow lakes of the Bug, Pilica and Wkra rivers (aBraszEwska-kowaLczyk 2002, LEwandowski 2006, LEwin 2014.…”

Section: Discussionmentioning

confidence: 89%

Long-term changes in the malacofauna of the pond-type experimental lake Warniak (Mazurian Lakeland, North-Eastern Poland)

Jurkiewicz-Karnkowska¹,

Jakubik²,

Lewandowski³

2017

Folia Malac.

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Warniak is a shallow eutrophic pond-type lake, part of the Mazurian Great Lakes. Since the late 1960s it has been subject to long-term experiments: introducing fish stocks of varied size and composition, resulting in massive physical, chemical and biotic changes in the lake's ecosystem. The aim of this study was an assessment of changes in the lake's mollusc assemblages 17 years after the first investigations (1998). The comparison of malacofauna in 1998 and 2015 showed changes in its composition, a significant decline in species richness and abundance, reduction in vertical distribution, increase in spatial variation of composition, richness and abundance. The proportion of rare species (i.e. found in one or two samples) increased from 17.4% to 64.7%. The dominance pattern became simplified and the frequencies of most species decreased. In 2015 Anodonta cygnea (L.) was still the most widespread unionid and one of the three most frequent species. The changes in the malacofauna occurred despite the lack of significant changes in the lake trophy. The deterioration of conditions for molluscs may result mainly from the impoverishment of macrophytes and the decrease in their abundance.

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Cited by 108 publications

References 21 publications

Factors affecting distribution pattern of dominant macroinvertebrates in Mantovo Reservoir (Republic of Macedonia)

Factors affecting distribution pattern of dominant macroinvertebrates in Mantovo Reservoir (Republic of Macedonia)

Floating plant dominance as a stable state

Long-term changes in the malacofauna of the pond-type experimental lake Warniak (Mazurian Lakeland, North-Eastern Poland)

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