Zooplankton taxonomic and functional structure is determined by macrophytes and fish predation in a Neotropical river

Deosti, Sabrina; Bomfim, Francieli de Fátima; Lansac‐Tôha, Fernando Miranda; Quirino, Bárbara Angélio; Bonecker, Cláudia Cósta

doi:10.1007/s10750-021-04527-8

Cited by 29 publications

(11 citation statements)

References 72 publications

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“…It is known that macrophytes create extremely complicated habitats that determine the formation of many ecological niches, as well as the possibility for the coexistence of various organisms [16,66,67]. In addition, the role of habitat heterogeneity is assessing the diversity of other groups of organisms (rotifers in this case) as well as the potential of the sampling taken approach (especially rotifers) from a different habitat, which can not only be used in assessing the quality of the environment in large water bodies [16,[68][69][70]. Studies concerning small water reservoirs have shown that the diversity of rotifers depends on the water reservoir zone and its characteristics.…”

Section: Discussionmentioning

confidence: 99%

Diversity of Rotifers in Small Rivers Affected by Human Activity

et al. 2022

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The rivers flowing through Upper Silesia and the adjacent areas (Southern Poland) are affected by various anthropogenic pressures including urbanisation, agriculture and animal husbandry, as well as industry (e.g., mining), which are reflected in the measured physical and chemical water parameters. The species composition of rotifers relative to a variety of microhabitats was studied in eight small rivers of this region in 2017. Our research is a comprehensive and up-to-date analysis that focuses on the rotifers in small rivers and shows the diversity of rotifers relative to the microhabitats and environmental variables. The diversity of rotifers ranged from 0 to 23 taxa in individual samples. In the studied rivers, 129 taxa of rotifers were found. Notommata groenlandica, a species that has not been recorded in the country for 100 years, was found in two rivers. The Kruskal–Wallis one-way ANOVA and Dunn’s multiple comparison post hoc tests revealed statistically significant differences in the median number of rotifer taxa between the abiotic types of rivers, rivers, sampling sites, microhabitats and seasons. A multiple regression analysis revealed a significant relationship (correlation) between the number of rotifer taxa, and the concentration of nitrites, total dissolved solids and dissolved oxygen in the water.

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Section: Discussionmentioning

confidence: 99%

Diversity of Rotifers in Small Rivers Affected by Human Activity

et al. 2022

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“…On the other hand, classic experimental and field studies for the subtropical climate region have shown that macrophytes are fragile or rare refuges for microcrustaceans (Meerhoff et al 2006(Meerhoff et al , 2007Iglesias et al 2007). Furthermore, recent studies indicate that certain levels of predation can have positive effects on functional diversity, balancing species distribution and functional characteristics (Deosti et al 2021). Since the predation factor was not measured in our study, the high genera richness and functional diversity observed in periods with floating macrophytes can be attributed both to the protection factor exerted by floating macrophytes, as well as to the predation factor.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, recent studies indicate that certain levels of predation can have positive effects on functional diversity, balancing species distribution and functional characteristics (Deosti et al . 2021). Since the predation factor was not measured in our study, the high genera richness and functional diversity observed in periods with floating macrophytes can be attributed both to the protection factor exerted by floating macrophytes, as well as to the predation factor.…”

Section: Discussionmentioning

confidence: 99%

Alternance of alternative stable states influence the functional diversity of microcrustaceans in a shallow subtropical lake

Martins

Albertoni

2022

Austral Ecology

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Shallow lakes in subtropical climate regions may have a clear water state with a predominance of submerged or floating macrophytes and a turbid water state with a predominance of phytoplankton. The relationship between microcrustaceans and these changes in alternative states is still incipient in the literature. And to better understand these relationships, the functional approach is an excellent tool. Thus, the present work seeks to test the hypothesis that changes in alternative stable states over time reflect the variability of composition and functional diversity of microcrustaceans. For this, samples of microcrustaceans collected in a subtropical shallow lake, which underwent alternate state changes in the period to 2000-2014, were used. Our results demonstrate a variation in composition and functional diversity among alternative states, thus supporting our hypothesis. In periods of clear water with a predominance of floating macrophytes, we found a greater functional diversity and richness of genera. This result may be associated with several factors such as greater habitat heterogeneity and lower predation pressure. The lowest values of functional diversity found in periods of turbid waters with predominance of phytoplankton and periods of clear waters with submerged macrophytes are related to the dominance of functional traits, such as scraper feeding type, herbivorous/omnivorous trophic group, littoral habitat and asexual reproduction. These traits are functional features of most Ostracoda genera, a taxonomic group abundant in these two alternative states. The predominance of this group may be related to the environmental characteristics of these periods, such as the high vegetation cover and the availability of niches unoccupied by more sensitive species, since most Ostracoda have high environmental tolerance. We conclude that the functional traits approach combined with taxonomic groups respond to temporal variations of alternative stable states and are important tools to detect environmental changes.

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“…the herbivore group in our study. Macrophyte biomass associated positively with the herbivores but negatively with the omnivore and carnivore groups [84]. This could be caused by reduced predation on cladocerans in more complex habitat.…”

Section: Drivers Of Trophic Diversity and Composition Of Zooplankton Communitiesmentioning

confidence: 93%

Human Impact Induces Shifts in Trophic Composition and Diversity of Consumer Communities in Small Freshwater Ecosystems

Buzhdygan

Piperac

Stamenković

et al. 2021

Small Water Bodies of the Western Balkans

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The current global rates of human impact intensification in freshwater ecosystems and their surroundings have caused an alarming loss of freshwater biodiversity and functioning across multiple trophic levels. Particularly vulnerable to anthropogenic pressures are small water bodies (SWB). However, the majority of the evidence is limited to a single community, especially macroinvertebrates, thus leaving us uncertain about cross-community multitrophic responses of freshwater

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Zooplankton taxonomic and functional structure is determined by macrophytes and fish predation in a Neotropical river

Cited by 29 publications

References 72 publications

Diversity of Rotifers in Small Rivers Affected by Human Activity

Diversity of Rotifers in Small Rivers Affected by Human Activity

Alternance of alternative stable states influence the functional diversity of microcrustaceans in a shallow subtropical lake

Human Impact Induces Shifts in Trophic Composition and Diversity of Consumer Communities in Small Freshwater Ecosystems

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