The Influence of Biotic and Abiotic Factors on Psammic Rotifers in Artificial and Natural Lakes

Bielańska-Grajner, Irena

doi:10.1007/s10750-005-4286-z

Cited by 8 publications

(4 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is consistent with the study carried out on the Polish lakes with different trophic conditions, where higher values of the Shannon index and larger numbers of rotifer species were found in lakes with lower trophic status (Bielańska-Grajner 2005). This result supports the theory that the trophic status of a water body affects the diversity of zoopsammon communities.…”

Section: Discussionsupporting

confidence: 92%

“…Ejsmont-Karabin (2004) also reported that bdelloids prefer the finest grain fraction. There are studies, however, where no significant correlations were found between the number of rotifers and the sand grain size (Bielańska-Grajner 2005). Being fine and small particle feeders, bdelloids should favor higher quantities of plant debris and associated bacteria in the arenal of L. Võrtsjärv.…”

Section: Discussionmentioning

confidence: 94%

See 1 more Smart Citation

The structure of psammic rotifer communities in two boreal lakes with different trophic conditions: Lake Võrtsjärv and Lake Saadjärv (Estonia)

Lokko

Virro

2014

Oceanological and Hydrobiological Studies

View full text Add to dashboard Cite

Psammon communities are still poorly studied worldwide. The aim of the present study was to establish the structure of psammic rotifer communities including their diversity and quantitative parameters. A total of 41 rotifer taxa were found in hydro-, hygro-, and euarenal zones of eutrophic Lake Võrtsjärv and mesotrophic Lake Saadjärv during the study carried out in Estonia in 2008, including 11 rotifer species new to Estonia. In L. Võrtsjärv, the predominant rotifer taxa were Bdelloidea and Lecane psammophila. L. psammophila dominated in July and August and bdelloids prevailed in the rest of the year. In L. Saadjärv, the most abundant taxa were Lepadella ovalis, Keratella hiemalis, and Cephalodella megalocephala. The psammic rotifer community of L. Saadjärv proved to be more diverse than that of L. Võrtsjärv. Microphagous rotifers were dominant in L. Võrtsjärv. Raptorial feeders dominated in L. Saadjärv in summer and autumn and were more abundant at sites with coarser sand and low plant density.

show abstract

Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 94%

The structure of psammic rotifer communities in two boreal lakes with different trophic conditions: Lake Võrtsjärv and Lake Saadjärv (Estonia)

Lokko

Virro

2014

Oceanological and Hydrobiological Studies

View full text Add to dashboard Cite

show abstract

“…Moreover, dominant ciliates, nematodes, and bdelloids were generally not identified to lower taxa, which may further bias the overall pattern of diversity. However, a similar relationship between the number of rotifer species and trophic state was found in a study carried out in Poland, where more rotifer species were found in lakes with a lower trophic status (Bielańska-Grajner, 2005). In another study in the same ecoregion the species richness was notably lower in hypertrophic lakes (Ejsmont-Karabin, 2003).…”

Section: Resultssupporting

confidence: 78%

Taxonomic composition of zoopsammon in fresh and brackish waters of Estonia, a Baltic province ecoregion of Europe

Lokko

Virro²,

Kotta³

2014

Estonian J. Ecol.

View full text Add to dashboard Cite

Zoopsammon communities, i.e. fauna dwelling in the interstitial sandy habitat at the water's edge, are largely understudied. The aim of the present study was to provide an overview of the taxonomic structure of zoopsammon in Estonian waters. The study is based on samples collected from four lakes across Estonia and from three sandy beaches on the Estonian coast of the Gulf of Finland, Baltic Sea, in 2008-2014. Animals from 12 phyla were found, of which the majority of rotifers and testate amoebae were identified to species level. A total of 156 taxa were determined, including 84 rotifer species and 39 testate amoebae species. In addition to the 46 new taxa for the Estonian fauna already registered in our previous works, the present study reports further 11 new rotifer, 19 testate amoebae, and 6 nematode taxa. The psammic communities in lake beaches had higher species richness than in coastal beaches, and the communities were more similar in coastal beaches than in lake beaches. The mesotrophic Lake Saadjärv had the highest taxon richness with 80 taxa from 10 phyla. Similarly, the number of testate amoebae species was higher in lake beaches than in coastal beaches. The number of taxa, especially the number of rotifer species, was lower in sampling sites with an elevated trophic state and/or human population density. The number of testate amoebae species was the highest in the hypertrophic Lake Verevi. As compared to testate amoebae, rotifer communities had a higher taxonomic richness at landscape scale characterized by variable communities both in time and space.

show abstract

“…The maximum density of rotifers in Lake 111 sediments was always <25 individuals cm −3 . Although methodological constraints render comparisons with other systems difficult, it appears that adult rotifer densities were similar to, or lower than, densities observed in oligotrophic Lake Brunnsee, Germany (mean = 33 individuals cm −3 ; Bergtold & Traunspurger 2004) and in Silesian lakes in Poland (<17 individuals cm −3 ; Bielanska‐Grajner 2005). The egg densities in Lake 111 were extremely low compared to the values compiled by Hairston (1996; see his table 1, p. 1088) and other studies (e.g.…”

Section: Discussionmentioning

confidence: 77%

Recruitment of Heliozoa, rhizopods and rotifers from the sediments of an extremely acidic lake during spring and early summer

Bell

Weithoff

2008

Lakes & Reservoirs

View full text Add to dashboard Cite

The goal of this study was to investigate the recruitment of zooplankton from the littoral sediment of Lake 111, an acidic lake in north-east Germany, in April (spring) and June (early summer), and its role in coupling the benthos and the pelagic. Maximum heliozoan and rhizopod recruitment occurred in early summer from sediment cores incubated at ambient water temperatures (20°C). Conversely, recruitment of the rotifer Cephalodella sp. was highest in spring at ambient spring temperatures of 12°C. A combination of passive and active recruitment processes is likely responsible. The seasonal abiotic and biotic sediment characteristics were relatively constant and therefore not likely responsible for the observed temporal recruitment pattern. The sediment water and carbon content ranged from 20 to 50% (mean = 29 ± 6% standard deviation) and 2-12% (mean = 5 ± 2% standard deviation), respectively. Similarly, there was little variation in the chlorophyll-a (mean = 0.2 ± 0.2 μg Chl-a g -1 dry weight ≡ 6.1 ± 3.9 mg Chl-a m -2 ). The in situ sediment bacterial density (0.82 × 10 9 ± 0.26 × 10 9 g -1 dry weight ≡ 1.01 × 10 9 ± 0.34 × 10 9 cells cm -3 ) was high. In contrast, the abundance of zoobenthos and their resting stages was low (< 25 individuals cm -3 , and mean of 90 ± 75 cysts cm -3 , respectively), with no temporal pattern being observed. Temperature was the only abiotic factor influencing recruitment.This study suggests that, even in relatively young, chemically extreme lakes, the benthos can play an important role in whole lake microbial processes and zooplankton community composition. Such benthic repositories of resting stages potentially provide protection against adverse environmental changes.

show abstract

The Influence of Biotic and Abiotic Factors on Psammic Rotifers in Artificial and Natural Lakes

Cited by 8 publications

References 23 publications

The structure of psammic rotifer communities in two boreal lakes with different trophic conditions: Lake Võrtsjärv and Lake Saadjärv (Estonia)

The structure of psammic rotifer communities in two boreal lakes with different trophic conditions: Lake Võrtsjärv and Lake Saadjärv (Estonia)

Taxonomic composition of zoopsammon in fresh and brackish waters of Estonia, a Baltic province ecoregion of Europe

Recruitment of Heliozoa, rhizopods and rotifers from the sediments of an extremely acidic lake during spring and early summer

Contact Info

Product

Resources

About