Beta diversity of diatoms is driven by environmental heterogeneity, spatial extent and productivity

Zorzal-Almeida, Stéfano; Bini, Luis Maurício; Bicudo, Denise C.

doi:10.1007/s10750-017-3117-3

Cited by 50 publications

(30 citation statements)

References 59 publications

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“…In contrast, our study did not show a positive correlation between environmental heterogeneity and beta diversity, which is in agreement with other studies (Heino et al, 2013;Bini et al, 2014;Heino et al, 2015;Zorzal-Almeida et al, 2017). Heino et al (2015) postulate that environments with high dispersal rates can mask local environmental effects.…”

Section: Composition Diversity and Density Of Ostracod Communitiessupporting

confidence: 93%

Periphytic community structure of Ostracoda (Crustacea) in the river-floodplain system of the Upper Paraná River

et al. 2017

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Cite as: Higuti, J. et al. Periphytic community structure of Ostracoda (Crustacea) in the river-floodplain system of the Upper Paraná River. Acta Limnologica Brasiliensia, 2017, vol. 29, e120. Abstract: Aim:We assessed the effect of environmental factors on the structure of periphytic ostracods communities along the river-floodplain system of the Upper Paraná River. We predict that the higher distance from Porto Primavera dam downstream would lead to higher diversity and density of the ostracods. Methods: Periphytic ostracods (associated with root systems of the floating Eichhornia spp) were sampled during November 2013 to May 2015. Three samples were collected at each sampling site (channel of the Paraná River, tributaries and lakes). Eichhornia plants were removed from the water by hand and the plants were placed in a plastic bucket. Roots were washed for the removal of ostracods, and samples were filtered through a hand net with 160 µm mesh size. Results: The faunistic survey recorded 44 ostracods species and richness estimators indicated that sampling effort appears to be suitable to reveal the diversity of ostracods in this studied area. The highest richness and density were observed in the stretch downstream of the dam in the main channel of Paraná River and in the lakes. Beta diversity was not significantly different along the longitudinal gradient downstream and higher similarity of ostracods species composition was observed in the lakes located in the stretch downstream of the dam. Conclusions: An increase in the richness and density of ostracods were recorded in the sections downstream of the Paraná River, evidencing the importance of undammed tributaries on the ostracods community. The similarity of beta diversity amongst sampling sites may be owing to permanent hydrological connectivity amongst these environments, favouring the exchange of organisms mainly through the drift of free-floating macrophytes, and owing to the passive dispersal of drought resistant eggs of ostracods. Local abiotic factors had significant effects on abundance and distribution of some ostracod species.

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Section: Composition Diversity and Density Of Ostracod Communitiessupporting

confidence: 93%

Periphytic community structure of Ostracoda (Crustacea) in the river-floodplain system of the Upper Paraná River

et al. 2017

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“…It is a multifaceted process which involves environmental alterations, species invasions, and extinctions (Olden and Rooney ; Petsch ). Homogenization of environmental conditions resulting from anthropogenic activities could contribute to biotic homogenization (Zorzalalmeida et al ). Nevertheless, biotic homogenization is not random because the loss and gain of species may be influenced by species‐specific features (McKinney and Lockwood ; Brice et al ).…”

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confidence: 99%

“…Anthropogenic nutrient enrichment can alter community structure of aquatic organisms (Carvalho et al ), e.g., through increase of phytoplankton biomass and algal blooms, and degradation of macrophyte cover, which would lead to consequent changes in the ecological functioning of lakes, e.g., energy flows, nutrient cycling, and ecosystem services they provide to humans (Schindler ; Heisler et al ). Many studies have focused on the impacts of eutrophication on species‐based beta diversity and species richness (Bini et al ; Dawson et al ; Zorzalalmeida et al ). For example, Donohue et al () found that nutrient enrichment led to taxonomic homogenization of lake benthic assemblages at both within‐lake and among‐lake scales.…”

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confidence: 99%

Nutrient enrichment homogenizes taxonomic and functional diversity of benthic macroinvertebrate assemblages in shallow lakes

Zhang

Cheng

et al. 2018

Limnology & Oceanography

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Eutrophication alters the trophic dynamics in lakes and may result in biotic homogenization. How nutrient enrichment drives patterns of taxonomic and functional (i.e., trait-based) homogenization of macroinvertebrate assemblages at within-lake (local) and among-lake (regional) scales is, however, not well understood. Taxonomic and functional compositions of macroinvertebrate assemblages in 41 lakes of the middle and lower reaches of the Yangtze River and Huaihe River were analyzed at within-lake and among-lake scales. Our results indicated

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“…Thereby, βW in the facultative pond was high in September (20.7) and low in October (12), whereas it was high in April (20.2) and lower in October (8.6) in the maturation pond. Both ponds had relatively low βW, indicating a low turnover in the phytoplankton community, i.e., ponds have high similarity (Schuster et al, 2015) and environments with high productivity can present low βw (Zorzal-Almeida et al, 2017). The maturation pond had higher βW in the rainy season, whereas it was higher in the dry season in the facultative pond.…”

Section: Phytoplankton Community Structurementioning

confidence: 97%

Variability in phytoplankton community structure and influence on stabilization pond functioning

D’Alessandro

Nogueira

Hoffmann³

2020

Rev. ambiente água

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Density of phytoplankton in stabilization ponds influences treatment performance. The study hypothesized that the phytoplankton community structure varies according to local and temporal changes and consequently influences the treatment of the effluent. Phytoplankton community structure in facultative and maturation ponds in central Brazil was analyzed to provide guidance on system operation and maintenance. Further, species density, abundance, diversity, richness, dominance and beta diversity were measured. The efficiency of the treatment was evaluated based on Biochemical Oxygen Demand (BOD). Additionally, a Canonical Correspondence Analysis (CCA) was used to investigate how physical and chemical variables influenced the composition of the most abundant species in the dry and rainy seasons and the microalgae that were most related to the removal of BOD. One hundred and sixty-eight taxa were recorded, and the most abundant classes in both ponds were Chlorophyceae and Cyanophyceae (40% potentially toxic). The maturation pond had greater adaptability in the rainy season, while the facultative pond was more flexible in the dry season. The best period of growth varied among species. In both ponds, Chlorella minutissima was the one which most contributed to the optimization of the treatment. Thus, identifying phytoplankton species and relating them to water quality parameters and weather can help to understand the ecological dynamics of wastewater treatment and provide useful information for the operation and maintenance of stabilization ponds.

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Beta diversity of diatoms is driven by environmental heterogeneity, spatial extent and productivity

Cited by 50 publications

References 59 publications

Periphytic community structure of Ostracoda (Crustacea) in the river-floodplain system of the Upper Paraná River

Periphytic community structure of Ostracoda (Crustacea) in the river-floodplain system of the Upper Paraná River

Nutrient enrichment homogenizes taxonomic and functional diversity of benthic macroinvertebrate assemblages in shallow lakes

Variability in phytoplankton community structure and influence on stabilization pond functioning

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