A Study of the Distribution and Ecology of Littoral Freshwater Chydorid (Crustacea, Cladocera) Communities in Ireland Using Multivariate Analyses

Duigan, Catherine A.; Kovach, Warren L.

doi:10.2307/2845397

Cited by 36 publications

(29 citation statements)

References 21 publications

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“…3), and Oxyurella tenuicaudis (G. O. Sars) appeared. This finding was indicated on the mud-vegetation substrates in Ireland lakes (Duigan and Kovach 1991). A decrease in openwater species was also noted.…”

Section: Cladocera Datasupporting

confidence: 62%

“…The cooling of the climate is indicated by the disappearance of Quercus, Ulmus, Tilia cordata, Taxus, Hedera and Viscum (Winter and Dobracka 2006;Winter et al 2008). A decrease in the water level occurs at the beginning of this period, indicated by a high abundance of the benthic Alona quadrangularis and an appearance of Oxyurella tenuicaudis, which indicates the existence of mud-vegetation substrates (Duigan and Kovach 1991) and a decrease in openwater species. Then a change to colder and wetter climates is suggested by a decrease in the values of Pinus sylvestris t. and an increase in the values of Calluna vulgaris, Ericaceae, Cyperaceae and Poaceae (Winter and Dobracka 2006;Winter et al 2008).…”

Section: Eemian Post-optimum (E6-e7)mentioning

confidence: 98%

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Eemian environmental changes recorded in lake deposits from Rzecino (NW Poland): Cladocera, isotopic and selected geochemical data

Niska

Mirosław‐Grabowska

2014

J Paleolimnol

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Analysis of Cladocera and organic matter from the sediments of the Rzecino paleolake are presented. These are probably among the first detailed published data from the Eemian Interglacial (MIS 5e) organic matter. The Rzecino paleolake is located in NW Poland in an area covered by the last glaciation. Approximately 5.8 m of sediment was analyzed. Previous palynological data indicate a continuous accumulation from the final phase of the Wartanian to the early Vistulian Glaciation. Data on the Cladocera correlated with the results of the analyses of organic matter, which enabled the reconstruction of varying environmental conditions and geneses of organic matter. In the final phase of the Wartanian and at the beginning of the Eemian Interglacial, low frequencies of Cladocera specimens and species were identified, which suggests unfavorable conditions for the development of zooplankton. Organic matter (OM) was characterized by a small amount of organic carbon and nitrogen, a high value of C/N (18-27) and a d 13 C of approximately -26 %, which suggests a higher plant source and a predominantly terrestrial origin for OM. An improvement in environmental conditions occurred during the pollen zone E3. The number of Cladocera species and individuals increased. An increase in TOC and TN suggests an enhancement of primary productivity and the development of macrophytes in the lake. A lower C/N ratio indicates a primary role of algae in the production of organic matter. During the Eemian optimum (pollen zones E4-E5), mostly Cladocera species preferring warm water occurred. Algae remained a significant component of OM. The early Eemian post-optimum (pollen zone E6) was characterized as a period of maximal abundance of zooplankton (20 species). During this period, rapid decreases in TOC, TN and the C/N ratio and an increase in d 13 C values suggest the reduced abundance of higher plants in the lake. In pollen zone E7, the frequency and diversity of Cladocera rapidly decreased. Species that tolerate cold water were dominant, which reflects unfavorable conditions for the development of zooplankton but a high water level. The low content of organic carbon and nitrogen, a C/N ratio in the range of 13-17 and d13 C values in the range of -26.2 to -28 % suggest the inhibition of terrestrial plant delivery. During the Early Vistulian (pollen zone EV1), rare faunal remains and the features of OM (the lowest amounts of TOC and TN, and the highest value of C/N) reflect the decline of lake conditions and a lack of primary production and aquatic vegetation in the lake.

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Section: Cladocera Datasupporting

confidence: 62%

Section: Eemian Post-optimum (E6-e7)mentioning

confidence: 98%

Eemian environmental changes recorded in lake deposits from Rzecino (NW Poland): Cladocera, isotopic and selected geochemical data

Niska

Mirosław‐Grabowska

2014

J Paleolimnol

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“…The high number of occurrences of these Cladocera in the NT-lakes suggests that they should, however, not be regarded as cold stenothermal but as cold tolerant (Meijering, 1983). Alona affinis and Chydorus sphaericus, for example, are known to occur over a wide range of environmental conditions (e.g., Duigan & Kovach, 1991;Duigan, 1992;Korhola, 1999). Planktonic Cladocera were dominated by Bosminidae (Bosmina coregoni and B. longispina), which occurred in 'warm' and/or 'nutrient-rich' NT-lakes.…”

Section: General Characteristicsmentioning

confidence: 99%

Relationships among recent Alpine Cladocera remains and their environment: implications for climate-change studies

2007

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Our objective was to assess the potential of Cladocera from mountain lakes for climate reconstruction. We related Cladocera from surface sediments of Alpine lakes (1,502-2,309 m asl) to 29 abiotic environmental variables using statistical methods. The environmental dataset included water chemistry, lake depth, and bi-hourly water-temperature logs, which were used to assess mean monthly water temperatures, dates of freezing and breakup, spring and autumn mixing. We found 14 different Cladocera of the families Bosminidae, Daphniidae, and Chydoridae. Lakes without Cladocera (eight lakes) were cold and/or ultra-oligotrophic, whereas lakes with planktonic and littoral Cladocera (19 lakes) were warmer and/or less oligotrophic. Lakes with only littoral Cladocera (18 lakes) had intermediate water temperatures/trophy. Changes in Cladocera assemblages were related to changes in climate, nutrients, and/or alkalinity. We found a climate threshold at which Bosminidae disappeared in 95% of the lakes. For climate-change research, we propose studying Cladocera along transects that include climatic thresholds.

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“…They occupy a key position in food chains converting organic matter used for its own growth and also making it available to higher trophic levels. They can also be indicators of the trophic state of the water bodies, because they quickly respond to the changes in environmental variables (Duigan & Kovach, 1991). They can also be used in the reconstruction of the past history of the aquatic ecosystem, considering that they have many fossil remains well preserved in the sediment (Whiteside, 1970).…”

Section: Introductionmentioning

confidence: 99%

Cladocera Chydoridae of high altitude water bodies (Serra da Mantiqueira), in Brazil

2002

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The diversity of species of Cladocera, Chydoridae in the water bodies belonging to the water management unity of Serra da Mantiqueira, was studied inside the BIOTA/FAPESP Program. A total of 21 water bodies were analyzed and the sampling was carried out between 9 th and 11 th September, 1999. Horizontal and vertical net hauls were taken at littoral and limnetic region in each lake. Most water bodies in Serra da Mantiqueira unity are small, shallow, and densely colonized by macrophytes. Most species of Cladocera found belong to the Chydoridae family, being typical inhabitants of the littoral zone, living associated with macrophytes. A total of 12 species were found, 9 of the subfamily Aloninae and 3 Chydorinae. In more than half of the water bodies the relative abundance of chydorids reached 100%, and they were dominant in most of the others, with few exceptions. Alona rustica was the most frequent species, occurring in 62% of the water bodies. The results evidenced the importance of the littoral zone as propitious habitats for the species of Chydoridae and contributing significantly to the diversity of Cladocera as a whole.Key words: Cladocera, Chydoridae, zooplankton diversity. RESUMO Cladocera Chydoridae de corpos d'água de grande altitude (Serra da Mantiqueira)A diversidade de espécies de Cladocera Chydoridae da unidade de gerenciamento dos recursos hídricos (UGRHI) da Serra da Mantiqueira foi estudada, como parte do Programa BIOTA/FAPESP. Foram analisadas amostras de 21 corpos d'água desta unidade de gerenciamento e as coletas foram realizadas no período de 9 a 11/9/99. Para a análise da comunidade zooplanctônica foram coletadas amostras por meio de arrastos horizontais e verticais na região limnética e na região litorânea. Os corpos d'água da UGRHI da Serra da Mantiqueira são pequenos, de pouca profundidade e densamente colonizados por macrófitas aquáticas. As espécies de Cladocera encontradas são típicas de região litorânea, vivendo associadas a macrófitas, isto é, representantes da família Chydoridae. Em relação à abundância relativa, esta família representou quase 100% do total de Cladocera da maior parte dos corpos d'água e, quanto à riqueza de espécies, representou mais da metade das espécies de Cladocera. A espécie Alona rustica foi a mais freqüente, ocorrendo em 62% dos corpos d'água. Os resultados obtidos comprovam que nos ambientes estudados a região litorânea desempenha papel importante, favorecendo o desenvolvimento de condições especiais para o crescimento de espécies de Chydoridae e contribuindo significativamente para a diversidade total dos Cladocera.Palavras-chave: Cladocera, Chydoridae, diversidade do zooplâncton. Braz. J. Biol., 62(4A): 681-687, 2002 682 SANTOS-WISNIEWSKI, M. J. et al.

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A Study of the Distribution and Ecology of Littoral Freshwater Chydorid (Crustacea, Cladocera) Communities in Ireland Using Multivariate Analyses

Cited by 36 publications

References 21 publications

Eemian environmental changes recorded in lake deposits from Rzecino (NW Poland): Cladocera, isotopic and selected geochemical data

Eemian environmental changes recorded in lake deposits from Rzecino (NW Poland): Cladocera, isotopic and selected geochemical data

Relationships among recent Alpine Cladocera remains and their environment: implications for climate-change studies

Cladocera Chydoridae of high altitude water bodies (Serra da Mantiqueira), in Brazil

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