Spatial dynamics of rotifers in a large lowland river, the Elbe, Germany: How important are retentive shoreline habitats for the plankton community?

Zimmermann-Timm, Heike; Holst, Henry; Kausch, Hartmut

doi:10.1007/s10750-007-9046-9

Cited by 32 publications

(30 citation statements)

References 47 publications

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“…These water bodies changed the environmental conditions with regard to significantly higher, orthophosphates, suspended organic matter and Chl a concentrations. According to the findings of other authors (Zimmermann-Timm et al, 2007), lentic parts enriched downstream lotic stretch in running waters with nutrients and organic matter, especially where lentic stretches prevailed over lotic, as in the Jankovac hydrosystem alike Plitvice lakes, Croatia (Sˇpoljar et al, 2007a, b).…”

Section: Environmental Conditionsmentioning

confidence: 85%

Bryophyte communities and seston in a karst stream (Jankovac Stream, Papuk Nature Park, Croatia)

Špoljar¹,

Dražina²,

Ostojić³

et al. 2012

Ann. Limnol. - Int. J. Lim.

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An investigation into bryophyte communities in karst Jankovac Stream (Papuk Nature Park, Croatia) was carried out once a month from July 2008 to June 2009. Samples were taken from two lotic microhabitats: (i) Jankovac Spring (JS), a hypocrenal habitat with dense bryophyte clusters (90% bottom cover) and (ii) Jankovac Waterfall (JW), with scattered bryophyte clusters (50% bottom cover). At the same time, seston samples were collected during the spring as the source site and after the JW, as the outflow site. The goals of this study were to understand the (i) algal, protozoan and metazoan bryophyte community assemblages in these two lotic microhabitats, (ii) influence of environmental factors on the structuring of the bryophyte community and (iii) structure of seston along the longitudinal profile. A total of 172 taxa were determined: 68 algae, 55 protozoa, 24 meiofauna and 25 macroinvertebrates. Statistically significant differences between two microhabitats differing in percentage of bryophyte cover were established testing 13 environmental parameters. In dense bryophyte clusters, community structure was determined by flow velocity and pH, and macroinvertebrates achieved higher diversity and abundance. On the contrary, in scattered bryophyte coverage algae, protozoa and meiofauna reached higher abundance and diversity governed by the amount of suspended organic matter and epiphyton. In contrast to previous studies, the inverse ratio of community diversity and abundanceversuspercentage of bryophyte cover was established. We assume this to be the result of an enrichment of the scattered bryophyte clusters by upstream seston. Additionally, the effects of anthropogenic hydromorphological disturbance are reflected in macroinvertebrate diversity and abundance reduction.

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Section: Environmental Conditionsmentioning

confidence: 85%

Bryophyte communities and seston in a karst stream (Jankovac Stream, Papuk Nature Park, Croatia)

Špoljar¹,

Dražina²,

Ostojić³

et al. 2012

Ann. Limnol. - Int. J. Lim.

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“…Similar domination of rotifers was observed in several rivers including the Elbe (Zimmermann-Timm et al 2007), the Danube (Reckendorfer et al 1999), the Loire (Lair & Reyes-Marchant 1997), the Rhine (Friedrich & Pohlmann 2009), the Po (Rossetti et al 2009) and the Darling (Shiel 1985). It has been suggested that the apparent dominance of rotifers in rivers maybe due to their relatively short generation times compared to the larger crustacean zooplankton (van Dijk & van Zanten 1995;Lair 2006).…”

Section: Discussionmentioning

confidence: 58%

“…Water residence time increases with the increasing river length and there is often a tendency for plankton to be more abundant downstream. Generally these downstream increases have been associated with the increases of time available for plankton to develop (Viroux 1999;Zimmermann-Timm et al 2007). So we can say that the "Age of Water" (Baranyi et al 2002) is very important for zooplankton development.…”

Section: Introductionmentioning

confidence: 99%

“…While zooplankton composition and abundance have been quite well documented in many large rivers of Europe (Lair & Reyes-Marchant 1997;Reckendorfer et al 1999;Zimmermann-Timm et al 2007;Rossetti et al 2009;Vadadi-Fülöp et al 2009 little is known of these communities in the mid-eastern European rivers such as the Vistula River. The Vistula River is one of the largest rivers of the Baltic Sea basin and its valley is an important ecological corridor in this part of Europe (Bij de Vaate et al 2002).…”

Section: Introductionmentioning

confidence: 99%

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The diversity and longitudinal changes of zooplankton in the lower course of a large, regulated European river (the lower Vistula River, Poland)

Napiórkowski

Napiórkowska

2013

Biologia

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The diversity and longitudinal variation of zooplankton in the lower Vistula River were analyzed. Samples were taken from 40 stations located along a 272-km long section of the lower river course. During the study the unique technique of taking samples from "the same water" was used. The zooplankton community was dominated by rotifers and naupliilarval stages of copepods. The most abundant species were: Brachionus angularis, Brachionus calyciflorus and Brachionus budapestiensis. The zooplankton species diversity in the main channel of the lower Vistula River was similar to other large European rivers; however, its abundance was lower. The diversity, abundance and biomass of potamoplankton steadily decreased downstream. This could be related both to scarcity of storage zones for potamoplankton development in the river due to the extensive regulation processes, and changes in hydrological conditions of the main channel (by the straightening of riverbed) where the samples were collected.

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“…In rivers, zooplankton assemblage is often dominated by rotifers, bosminids and juvenile copepods throughout the year, with a negligible occurrence of large-body cladocerans and calanoid populations (Kobayashi, 1997;Viroux, 1997;Welker and Walz, 1998;Sˇpoljar et al, 2007Sˇpoljar et al, , 2012aSˇpoljar et al, , 2012bZimmermann-Timm et al, 2007). Rotifers, often the main component in freshwater ecosystems, play a key role in the pelagic food chain; they are a fundamental link between phytoplankton and secondary consumers, since they act as vector in the matter and energy transfer from bacteria and small detrital particles, not consumed by other planktonic organisms at higher food chain levels (Conde et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Spring rotifer community structure in the Alcantara River (Sicily, Italy), using different mesh size nets: relation to environmental factors

Rodríguez

Granata

Guglielmo

et al. 2013

Ann. Limnol. - Int. J. Lim.

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-The present study focus on some aspects of zooplankton structure in the Alcantara River (Sicily, Italy), in relation to environmental factors. Zooplankton samplings were performed in spring in four sites, located from up-to downstream along the river course. Four low-flow velocity station points were chosen along a transversal river section in each site. Samples were taken from all station points in the four sites by two different mesh sizes (55 and 100 mm) rectangular nets. Rotifer abundances were an order of magnitude higher in 55 mm mesh size samples than in 100 mm mesh size ones. The two communities also resulted significantly different (ANOSIM test, r = 0.212; P = 0.1%). Generally, low abundances (from 3470 ¡ 5133 to 422 ¡ 474 ind.m x3 ) were explained by low chlorophyll a concentration and the highflow regime of this river. Rotifer dominated the zooplankton community. Cladocerans, copepods and nauplii occurred with considerably lower abundances than rotifers. However, the relative contributions of these taxa to total abundances depended on the mesh sizes used. Euchlanis and Adineta genera exhibited the highest abundances in the rotifer assemblage. Conductivity alone or in association with temperature and dissolved oxygen was the most important environmental factor affecting rotifer community distribution. Cephalodella sp., Lepadella sp. and Trichotria pocillum showed a high positive relation to pico-plankton, showing this fraction as a possible rotifer food item. This paper demonstrated a higher efficiency of the finest net to characterize riverine zooplankton community that increases from up to downstream in terms of abundances and diversity.

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Spatial dynamics of rotifers in a large lowland river, the Elbe, Germany: How important are retentive shoreline habitats for the plankton community?

Cited by 32 publications

References 47 publications

Bryophyte communities and seston in a karst stream (Jankovac Stream, Papuk Nature Park, Croatia)

Bryophyte communities and seston in a karst stream (Jankovac Stream, Papuk Nature Park, Croatia)

The diversity and longitudinal changes of zooplankton in the lower course of a large, regulated European river (the lower Vistula River, Poland)

Spring rotifer community structure in the Alcantara River (Sicily, Italy), using different mesh size nets: relation to environmental factors

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