Functional rather than taxonomic diversity reveals changes in the phytoplankton community of a large dammed river

Ecological Indicators, Journal Year: 2020, Volume and Issue: 121, P. 107048 - 107048

Published: Oct. 24, 2020

River damming reduces the dispersal rates of biota and filter species by altering local environmental conditions. Although phytoplankton is a key biotic group to indicate changes in aquatic environments, effects river on longitudinal distribution communities are not widely addressed. Here we investigated taxonomic functional composition community large tropical dammed river. We expect compositional be higher at than level especially dam-free stretches because running waters select able cope with water turbulence. Furthermore, flow regulation allows different traits colonize increasingly lentic resulting diversity towards dams. Phytoplankton samples were taken 210 sites, spaced 5 km, along whole channel. Data split reservoir considering sites within 30 km before after each dam analyze composition. Compositional assessed estimating degree which differed from all other regional pool (community distinctiveness) separately. Functional was estimated as same respect their trait (functional dispersion). used community-weighted means test how filtered damming. conditions using boosted regression trees (BRT). observed no dispersal. turnover low, suggesting that occurred mainly among functionally similar species. However, there noticeable reduction persisted for more 100 one Flow allowed flagellated mucilaginous areas. After dams, such due increase mixing downstream, evidenced hump-shaped trend distance BRT analyses highlighted role nutrient input areas change. This study highlights importance both taxonomical describe human intervention ecosystems.

Language: Английский

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

Hydrobiologia, Journal Year: 2021, Volume and Issue: 848(7), P. 1475 - 1490

Published: March 1, 2021

Language: Английский

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Environmental filter drives the taxonomic and functional β-diversity of zooplankton in tropical shallow lakes

Hydrobiologia, Journal Year: 2021, Volume and Issue: 848(8), P. 1881 - 1895

Published: March 20, 2021

Language: Английский

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Zooplankton β diversity dynamics and metacommunity structure depend on spatial and temporal scales in a Neotropical floodplain

Freshwater Biology, Journal Year: 2021, Volume and Issue: 66(7), P. 1328 - 1342

Published: May 3, 2021

Abstract Both β diversity and metacommunity structure vary in time space. It is necessary to examine different scales, especially the face of extreme hydrological conditions. We investigated seasonal variation Elements Metacommunity Structure [EMS] zooplankton during four years (two prolonged drought two with flood events) at spatial scales (sub‐basins floodplain; smaller larger scale, respectively). sampled 29 lakes quarterly Upper Paraná River floodplain, Brazil. estimated replacement component using Jaccard dissimilarity index. also used EMS determine pattern distribution each period scale. The peak observed snapshot sampling drove homogenization zooplanktonic assemblages. However, was not reduced events compared either (floodplain sub‐basins), except for a single sub‐basin. This finding shows importance longer‐term ecological studies better capture dynamics metacommunity. Regardless scale remained practically constant throughout years, predominance species range turnover (Clementsian). At smallest (sub‐basins), we found quasi‐structural patterns (quasi‐Clementsian quasi‐Gleasonian). Clementsian suggests that associations floodplain responded similarly environmental gradient responses differed among groups. Over time, (sub‐basin) represents than (floodplain), emphasize need further consider biological groups over maximize understanding aquatic metacommunities dynamics. ​

Language: Английский

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Succession of zooplankton in a Mediterranean pond using taxonomic and functional approaches

Inland Waters, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 55

Published: April 30, 2025

Language: Английский

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Characteristics of phytoplankton-zooplankton communities and the roles in the transmission of antibiotic resistance genes under the pressure of river contamination

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 780, P. 146452 - 146452

Published: March 19, 2021

Language: Английский

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Deciphering the Patterns and Correlates of Zooplankton Functional Diversity in Mountain and Lowland Ponds

Freshwater Biology, Journal Year: 2025, Volume and Issue: 70(1)

Published: Jan. 1, 2025

ABSTRACT Biodiversity studies have usually been conducted considering only the taxonomic dimension of ecological communities. However, diversity measurements taking into account functional traits species may be more sensitive in capturing aspects community functioning that are not apparent with traditional approach. Functional (either based on alpha or beta levels) is, therefore, a facet provides link between ecosystem and structure an important metric for assessing impact global change context applied conservation schemes. Zooplankton is key element lentic ecosystems due to its linkage primary producers secondary consumers. Here, we tried disentangle spatial patterns correlates zooplankton along relatively wide altitudinal gradient (700–2100 m a.s.l.) across central northwestern Spain. We also identified environmental controls extensive set lowland (48) mountain (28) ponds sampled 2004–2005 2007–2008, respectively. assessed whether replacement richness differences drove overall evaluated relative contributions geographical distances variation diversity. Our findings highlighted importance filtering increasing elevation, leading potentially concomitant decrease values. was related changes patterns, which were mostly result pure loss gain both ponds. suggest eutrophication associated agricultural development main factor underlying homogenisation communities Local strongly dominant trait difference component than distances. This study supports prediction elevation fosters different functions. results local conditions determining architecture communities, physiologically extreme environments (mountains) areas suffering from pressures processes. fraction characterising relationships generally low. suggests prevalence idiosyncratic responses random stochastic events structuring composition freshwater

Language: Английский

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Zooplankton functional-approach studies in continental aquatic environments: a systematic review

Aquatic Ecology, Journal Year: 2019, Volume and Issue: 53(2), P. 191 - 203

Published: March 8, 2019

Language: Английский

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Changing taxonomic and functional β-diversity of cladoceran communities in Northeastern and South Brazil

Hydrobiologia, Journal Year: 2020, Volume and Issue: 847(18), P. 3845 - 3856

Published: April 2, 2020

Language: Английский

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Responses of stream zooplankton diversity metrics to eutrophication and temporal environmental variability in agricultural catchments

Environmental Monitoring and Assessment, Journal Year: 2020, Volume and Issue: 192(12)

Published: Nov. 26, 2020

Language: Английский

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