Predation by an omnivorous fish and food availability alter zooplankton functional diversity: a microcosm approach DOI Creative Commons
Diogo Castanho Amaral, Bárbara Dunck,

Louizi S. M. Braghin

et al.

Anais da Academia Brasileira de Ciências, Journal Year: 2021, Volume and Issue: 93(suppl 3)

Published: Jan. 1, 2021

Studies considering the functional traits of organisms, populations, and communities indices increase understanding many factors on ecosystem functioning. Here, we analyze predation effect (by fish) zooplankton diversity effects biomass density periphytic algae feeding type trait body size. We expect that intense by fish leads to higher values food resource will be positively related abundance For that, microcosms were established (T1- fish-absence, T2- fish-presence, both with as food). observed presence decreased through modifications in availability nutrients algae, middle-out effect. also size had a negative relationship resource, reaffirming high subtropical lakes is linked small-bodied zooplankton. The raptorial copepods covariate which was an alternative and, this case, main form carbon input into system. In study, omnivorous reduced traits, can alter energy stock flow aquatic ecosystems.

Language: Английский

How Do Specific Environmental Conditions in Canals Affect the Structure and Variability of the Zooplankton Community? DOI Open Access
Nikola Kolarova, Paweł Napiórkowski

Water, Journal Year: 2022, Volume and Issue: 14(6), P. 979 - 979

Published: March 20, 2022

The present study investigates the responses of zooplankton (including changes in their structure and diversity) to physicochemical biological parameters two artificial waterways. Water samples were collected monthly from Bydgoszcz Canal, Noteć Brda River during growing season April–October 2019. We analyzed how selected water temperature, Secchi disk visibility, oxygen concentration, conductivity, pH, as well nitrate, phosphate, chl-a concentrations) affected seasonal variations diversity (T) density (N). In total, we recorded 98 species, average was 320 ind/L. At all sites, same species dominant: Keratella cochlearis among rotifers Cladocera Bosmina longirostris crustaceans. Rotifers dominated qualitatively quantitatively over Zooplankton biomass, number higher Canal than or Canal. This may be connected locks on slowing down flow, thereby increasing macrophyte vegetation, which creates ecological niches supporting development.

Language: Английский

Citations

9
Zooplankton studies in Colombian fresh and brackish water ecosystems: A review and future perspectives DOI Creative Commons
Camilo Andrade-Sossa, Juan Pablo Álvarez, Nelson Aranguren-Riaño

et al.

Limnologica, Journal Year: 2023, Volume and Issue: 100, P. 126081 - 126081

Published: April 26, 2023

Colombia is a global biodiversity hotspot, yet its zooplankton fauna remains poorly explored. In Colombian inland waters, 253 species of rotifers, 119 cladocerans and 82 copepods (not included benthic species) have been reported, in contrast with only 14 genera protozoa. Most publications report on the Magdalena-Cauca basin, highest number records for lowland areas (< 1000 m.a.s.l.). The least explored regions are Chocó, Orinoco Amazon basins. checklists often include several taxa recognized as groups cryptic or ones described cosmopolitan. Integrative taxonomic approaches scarce, diversity data need to be validated by molecular analyses detailed morphological descriptions using optical scanning electron microscopy. Historical, regional, local environmental factors that explain richness, distribution, abundance include: water bodies size, hydrological connectivity, trophic status; physical stability and, hydro-climatic patterns variation. analysis ecosystem processes related communities highlights importance detritus an alternative energy flow path aquatic ecosystems at all altitude ranges. We propose strengthen regional studies functional groups, ecological redundancy, adaptive traits evaluate responses climatic, stressors. Due great extensive altitudinal gradient Colombia, it necessary expand coverage understand role functioning.

Language: Английский

Citations

4
Environmental factors affecting the spatio-temporal distribution of zooplankton functional groups in a deep alkaline lake DOI Creative Commons
Zeynep Dorak, Özcan Gaygusuz, Latife Köker

et al.

Hydrobiologia, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 1, 2024

Abstract In recent years, trait-based studies have gained importance as an extension of taxonomic to better understanding ecosystem processes. However, these are still very limited in Mediterranean freshwaters. The aim the study was link functional groups with environmental factors and processes for zooplankton Lake Iznik, which is alkaline lake Türkiye. Morphological, physiological behavioural categories been selected response traits. Physical chemical variables trophic state important predictors A total 26 taxa belonging four were classified into five according It found that significantly affected by seasonally changing conditions, but not depth. main predictor electrical conductivity. As a result conditions deterioration (meso ~ eutrophy), low richness, dominance microphagous feeding type small-bodied indicate degradation leading depletion (homogenisation). results showed temporal variations can affect will enable deep lakes.

Language: Английский

Citations

1
Integrative approach to monitoring metazoan diversity and distribution in two Mediterranean coastal sites through morphology and organismal eDNA DOI Creative Commons
Iole Di Capua,

Fabiana Luise,

Gianpaolo Zampicinini

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Aug. 20, 2024

Marine and coastal ecosystems respond to climate change in various ways, such as the type of ecosystem, species composition, interactions, distribution, effect local stressors. Metazoan organisms, particularly zooplankton, are important indicators for monitoring effects climate-driven warming marine over long term. In this study, diversity distribution zooplankton communities Mediterranean Sea (Canyon Dohrn LTER-MareChiara, Gulf Naples), a known biodiversity changes hotspot, have been assessed using integration morphological-based identification organismal eDNA. Our findings showed that multi-locus strategy including mitochondrial cytochrome c oxidase I (COI) gene hypervariable region V9 18S rDNA (18S V9) targets, improved taxonomic overview, with COI being more effective than metazoans at level. However, appendicularians were detected only region. Overall, eDNA is powerful approach revealing hidden biodiversity, especially gelatinous meroplankton components, provided new insights into patterns. The ecological importance calanoid copepods has confirmed. contrast, discovery 13 metazoan records Sea, two non-indigenous copepod species, suggested stressors affect community structure resilience, highlighting biomonitoring protecting ecosystems.

Language: Английский

Citations

1
The Effects of Water Level Fluctuation on Zooplankton Communities in Shahu Lake Based on DNA Metabarcoding and Morphological Methods DOI Creative Commons
Xuemei Qiu,

Quanfeng Lu,

Chenchen Jia

et al.

Animals, Journal Year: 2022, Volume and Issue: 12(8), P. 950 - 950

Published: April 7, 2022

Background: The water level of Poyang Lake (China) fluctuates seasonally. Shahu Lake, a smaller body connected to during the wet season, is separated in dry season. Due special fishing method termed ‘lake enclosed autumn’, lowered and reaches its lowest point January, which <0.5 m deep middle lake. Our research investigated effect changes on zooplankton community composition Lake. Methods: We used both DNA metabarcoding (MBC) (18S rRNA gene V4 region) morphological (MOI) track structure over four seasons (China). Results: Totals 90 98 species were detected by MOI MBC, respectively, with rotifers being main component. α-diversity index methods increased from spring summer decreased autumn, reaching value winter. NMDS cluster analysis showed that all communities MBC significantly winter was other three seasons, but autumn more similar. Conclusions: Changes had significant effects composition. found able detect differences than MOI. also advantages copepod recognition. In our study, 37 copepods only 11 concluded should be seasonal variations zooplankton.

Language: Английский

Citations

6
Seasonal and spatial variability of zooplankton diversity in the Poyang Lake Basin using DNA metabarcoding DOI Creative Commons
Xuemei Qiu, Xiongjun Liu,

Quanfeng Lu

et al.

Ecology and Evolution, Journal Year: 2022, Volume and Issue: 12(6)

Published: June 1, 2022

Abstract Freshwater ecosystems face multiple threats to their stability globally. Poyang Lake is the largest lake in China, but its habitat has been seriously degraded because of human activities and natural factors (e.g. climate change), resulting a decline freshwater biodiversity. Zooplankton are useful indicators environmental stressors they sensitive external perturbations. DNA metabarcoding an approach that gained significant traction by aiding ecosystem conservation management. Here, seasonal spatial variability zooplankton diversity were analyzed Basin using metabarcoding. The results showed community structure exhibited metabarcoding, where was correlated with turbidity, water temperature, pH, total phosphorus, chlorophyll‐a. These indicated variations affected change could be main driving for community. This study also provides important reference management aquatic health

Language: Английский

Citations

6
A review of the zooplankton studies in Paraguay’s freshwater environments DOI
Gustavo Adolfo Villalba Duré, Gilmar Perbiche‐Neves, Cláudia Cósta Bonecker

et al.

Limnologica, Journal Year: 2022, Volume and Issue: 100, P. 126033 - 126033

Published: Oct. 10, 2022

Language: Английский

Citations

6
How do environmental variables affect the temporal dynamics of zooplankton functional groups in a hyper-eutrophic wetland? DOI
Zeynep Dorak, Latife Köker, Cenk Gürevin

et al.

Environmental Science and Pollution Research, Journal Year: 2023, Volume and Issue: 30(43), P. 97115 - 97127

Published: Aug. 16, 2023

Language: Английский

Citations

2
Effects of environmental factors on the functional diversity of crustacean zooplankton community DOI Open Access
Songbo Wang,

Shi Zhaojin,

Hong Geng

et al.

Journal of Lake Sciences, Journal Year: 2021, Volume and Issue: 33(4), P. 1220 - 1229

Published: Jan. 1, 2021

基于功能性状的生物多样性分析是当前生态学研究中的常用方法之一.浮游动物作为水生态系统食物网的重要组成成分，其功能多样性受关注的程度远不如其重要性.本文通过对14个水体浮游甲壳动物群落结构的研究，分析了环境因子对其功能多样性指数，包括功能丰富度（FRic）、功能均匀度（FEve）、功能离散度（FDiv）和功能分散度（FDis），以及功能群分布的影响.结果显示，亲缘关系近的物种（在分类学上相近）由于具有相似的功能性状，均很好地聚为一类.相关分析显示，FRic、FEve和FDiv与环境因子之间不存在显著的相关关系；FDis与总溶解性氮、总溶解性磷、氨氮和悬浮物C/P比存在显著的相关关系.回归分析发现，随着水体总溶解性磷浓度的上升，浮游甲壳动物的物种数表现出下降趋势，功能群数量、功能群Shannon-Wiener指数和FDis均显著下降；另外，FRic和FDis与功能群数量均呈显著正相关.这些结果表明水体富营养化能促进浮游甲壳动物群落功能性状的趋同，环境选择是群落结构变异的主要驱动力之一.;Methods based on functional traits are widely used in current biodiversity studies. As an important component of aquatic food web, the attention paid zooplankton by researchers is disproportional to its importance. In present study, effects environmental factors diversity indices as well distribution groups crustacean communities 14 waterbodies were investigated. The results showed that species with similar grouped together and phylogenetically related. Correlation analysis found no significant correlation between richness (FRic), evenness (FEve), divergence (FDiv) factors. However, relationships for dispersion (FDis) relation total dissolved nitrogen, phosphorus(TDP), ammonia nitrogen seston C/P ratio. Regression except richness, number Shannon-Wiener index FDis all declined significantly increasing concentration TDP. addition, FRic both positively correlated groups. These suggest eutrophication induces clustering zooplankton, filtering one major forces driving formation community structure.

Language: Английский

Citations

5
Role of zooplanktonic functional groups in a shallow mesotrophic reservoir DOI Creative Commons
Maria Carolina de Almeida Castilho, Thiago Rodrigues dos Santos, Carla Ferragut

et al.

Acta Limnologica Brasiliensia, Journal Year: 2023, Volume and Issue: 35

Published: Jan. 1, 2023

Abstract: Aim Zooplankton functional groups play an important role in lake functioning and can readily respond to environmental changes may be associated with phytoplankton changes. In warmer regions, zooplankton species have a smaller body size, which decreases their grazing capacity, attenuating top-down control throughout phytoplankton. We evaluated density biomass of relationship algal horizontal reservoir zonation (pelagic, sublittoral, eulittoral zones) the shallow reservoir. hypothesize that are fluctuations zonation. Methods Changes structure group controlling limnological variables were verified at three sampling stations: pelagic, zones mesotrophic Results distributed seven groups. The not clearly variations However, zonation, where specific found zones. Conclusions related but due dominance small organisms.

Language: Английский

Citations

1