2014
DOI: 10.1007/s00248-014-0486-2
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Abstract: Food webs include complex ecological interactions that define the flow of matter and energy, and are fundamental in understanding the functioning of an ecosystem. Temporal variations in the densities of communities belonging to the planktonic food web (i.e., microbial: bacteria, flagellate, and ciliate; and grazing: zooplankton and phytoplankton) were investigated, aiming to clarify the interactions between these organisms and the dynamics of the planktonic food web in a floodplain lake. We hypothesized that h… Show more

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Cited by 30 publications
(22 citation statements)
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“…When a resource is scarce, large filter‐feeding cladocerans (>800 μm) are better competitors than small ones (Jeppesen et al, ) because they feed on a wide size range of algae. Daphniidae, such as Daphnia magna , can feed on algae smaller than 5 μm (Gliwicz, ) up to 80 μm, despite most only feeding on algae sized 40 μm or less (Burns, ), and can also ingest other food items such as bacteria, heterotrophic flagellates, and ciliates of distinct sizes (Auer et al, ; Declerck et al, ; Kalinowska et al, ; Özkan et al, ; Segovia et al, ). This explains the fact that the large size class was predominant in environments where food resource availability was lower, and the negative relationship between larger zooplankton size classes and nanophytoplankton, microphytoplankton, and ciliates, since phytoplankton and ciliates were likely not their only food resource.…”
Section: Discussionmentioning
confidence: 99%
“…When a resource is scarce, large filter‐feeding cladocerans (>800 μm) are better competitors than small ones (Jeppesen et al, ) because they feed on a wide size range of algae. Daphniidae, such as Daphnia magna , can feed on algae smaller than 5 μm (Gliwicz, ) up to 80 μm, despite most only feeding on algae sized 40 μm or less (Burns, ), and can also ingest other food items such as bacteria, heterotrophic flagellates, and ciliates of distinct sizes (Auer et al, ; Declerck et al, ; Kalinowska et al, ; Özkan et al, ; Segovia et al, ). This explains the fact that the large size class was predominant in environments where food resource availability was lower, and the negative relationship between larger zooplankton size classes and nanophytoplankton, microphytoplankton, and ciliates, since phytoplankton and ciliates were likely not their only food resource.…”
Section: Discussionmentioning
confidence: 99%
“…Several studies have shown that food resource availability affects protist community (Palijan, 2012;Segovia et al, 2015), however these resources vary widely in size and quality (Li et al, 2016;Pernthaler et al, 1996) and may affect not only protist abundance but also their size classes. It is important to notice that both food resources and predators are important in controlling the protist community, and thus, bottom up and top down mechanisms act simultaneously in structuring this community.…”
Section: Resultsmentioning
confidence: 99%
“…However, little is known about the periphytic microbial communities inhabiting lakes dominated by different types of macrophytes. Understanding the flow of matter and energy through an ecosystem, as described in food web theory, is of paramount importance (Pomeroy, 1974;Segovia et al, 2015). Microbial communities are regulated both by top-predator grazing (top-down control) and nutrient resources (bottom-up control), and the strength of this control is dependent on trophic position and food web length (Pierce and Turner, 1992;Biyu, 2000;Xu et al, 2005).…”
Section: Introductionmentioning
confidence: 99%