The structure of macrozoobenthic communities in the Tywa River, a right-bank tributary of the Oder River (northwest Poland)

Raczyńska, Małgorzata; Chojnacki, Jan

doi:10.2478/v10009-009-0029-1

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…In this lake, families of Oligochaeta and Chironomidae constitute a large part of the zoobenthic structure. Oligochaeta and Chironomidae taxa are found in polysaprobic and alpha-mesosaprobic freshwater zones where domestic wastes are discharged, and Chironomidae larvae are ecological indicators in these zones (Raczynska et al 2000). Similarly, the presence of members of Erpobdellidae, Psychodidae, and Dreissenidae, which are typical groups of mesosaprobic and polysaprobic habitat zones, is compatible with these environmental parameters.…”

Section: Zoobenthic Community Structurementioning

confidence: 80%

“…Although Lake İznik is rich in benthic macroinvertebrates, the lake largely contains tolerant taxa such as species of Ephemeroptera and Gastropoda. Species of Baetidae from Ephemeroptera and Gammaridae from Malacostraca are typical groups of beta-mesosaprobic and alpha-mesosaprobic zones (Raczynska et al 2000;Sporka 2006). Freshwater pulmonates from Gastropoda are distributed worldwide with broad environmental tolerance levels (Strong et al 2008) and they are often indicators of eutrophic environmental conditions (Kebapçı, Yıldırım 2010).…”

Section: Zoobenthic Community Structurementioning

confidence: 99%

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Use of biomonitoring tools to detect water quality-dependent ecosystem (macroinvertebrate) responses in lentic systems: the examples of Lakes İznik and Manyas, Türkiye

Mercan

Arslan

2023

OandHS

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Lakes İznik and Manyas located in Türkiye are important biodiversity resources in the Palearctic region. No studies to date have explored the ecological statuses of these lakes together with their water quality based on biotic indices utilizing benthic macroinvertebrates. In this study, some parameters listed in the SWQMR of Türkiye were measured to determine the ecological quality of the lakes. Biotic indices included in the WFD and bacteriological parameters in terms of human health were also evaluated for these lakes. Sampling was performed at 6 stations in 2018-2019. Results for the zoobenthic community structure indicate that Lake İznik has started to become organically polluted and Lake Manyas is more polluted. Also, the biological index results for Lake İznik also show that the lake water quality has started to decrease and that pollution conditions have occurred, pointing to class III water quality. It is clear that there is pollution pressure in Lake İznik. However, according to the results, the macrozoobenthic community structure, diversity, and water quality of Lake İznik seem to be better than those of Lake Manyas. According to the results of the water qualities in the lakes, precautions should be taken to eliminate the negative pressures seen in both lakes.

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Section: Zoobenthic Community Structurementioning

confidence: 80%

Section: Zoobenthic Community Structurementioning

confidence: 99%

Use of biomonitoring tools to detect water quality-dependent ecosystem (macroinvertebrate) responses in lentic systems: the examples of Lakes İznik and Manyas, Türkiye

Mercan

Arslan

2023

OandHS

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Influence of the fish pond aquaculture effluent discharge on abiotic environmental factors of selected rivers in Northwest Poland

Raczyńska

Machula

Choiński

et al. 2012

Acta Ecologica Sinica

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Mollusc communities of lowland rivers and oxbow lakes in agricultural areas with anthropogenically elevated nutrient concentration

Lewin¹

2014

Folia Malacol.

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Anthropogenically elevated nutrient concentration occurs in both ground and surface waters and cause grave environmental problems which are responsible for the degradation of water quality on a worldwide scale. The progressive anthropogenic pressure caused by prolonged agricultural activity has a negative effect on most water ecosystems including rivers and reservoirs. Freshwater molluscs, which are hololimnic organisms, have a limited mobility; therefore, they are good bioindicators of changes in their habitats. They reflect the abiotic or biotic state of water habitats, which represents the impact of environmental change on the habitat, community as well as on the ecosystem. A long-term survey of mollusc communities revealed the occurrence of 44 species including some rare, vulnerable, threatened or legally protected species, e.g. Borysthenia naticina, Unio crassus, Anodonta cygnea, Pseudanodonta complanata or Sphaerium rivicola, in the Wkra River, its tributaries and selected oxbow lakes. In the Wkra River catchment area, the mollusc communities, including U. crassus (Habitats Directive Natura 2000), are under a combined effect of several environmental factors. Conductivity, hardness, current velocity, river width, temperature, nutrient concentration and the size of sediment particles were the parameters most associated (statistically significant according to the forward selection results) with the distribution of mollusc species. The forward selection results showed that the concentration of dissolved oxygen and the occurrence of macrophytes also exerted a significant influence on the distribution of Mollusca. Among environmental factors, anthropogenically elevated concentrations of nitrites and nitrates in the water were the most predictive parameters that negatively influenced (stressors) the structure of mollusc communities. The novel findings of this survey showed that some mollusc species could tolerate wider ranges of some environmental factors and higher concentrations of nutrients than had been expected. U. crassus is more tolerant of a relatively high concentration of nitrates in the water than was previously expected, as well as of nitrites and phosphates, and it can survive in rivers with relatively high nutrient concentration. The present results confirm both the field and the toxicological research on the negative effect of nitrites and nitrates, which is caused by their toxicity to freshwater molluscs. The number of individuals, number of mollusc species and density decreased dramatically within the last year of the survey in the Wkra River and its tributaries. This phenomenon seems to be a direct result of the nutrient enrichment in the Wkra River catchment area, the regulation of riverbeds or an indirect result, e.g. lack of primary or appropriate host fishes for unionid species. The declining trend in the global mollusc population has probably begun to occur in the Wkra River catchment area.

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The structure of macrozoobenthic communities in the Tywa River, a right-bank tributary of the Oder River (northwest Poland)

Cited by 4 publications

References 2 publications

Use of biomonitoring tools to detect water quality-dependent ecosystem (macroinvertebrate) responses in lentic systems: the examples of Lakes İznik and Manyas, Türkiye

Use of biomonitoring tools to detect water quality-dependent ecosystem (macroinvertebrate) responses in lentic systems: the examples of Lakes İznik and Manyas, Türkiye

Influence of the fish pond aquaculture effluent discharge on abiotic environmental factors of selected rivers in Northwest Poland

Mollusc communities of lowland rivers and oxbow lakes in agricultural areas with anthropogenically elevated nutrient concentration

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