Effect of water chemistry on zooplanktonic and microbial communities across freshwater ecotones in different macrophyte-dominated shallow lakes

Mieczan, Tomasz; Adamczuk, Małgorzata; Tarkowska‐Kukuryk, Monika; Nawrot, Dorota

doi:10.4081/jlimnol.2015.1338

Cited by 7 publications

(9 citation statements)

References 49 publications

(32 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under these heterogeneity stream ecosystems, physicochemical-factor provides a diverse environment for bacterial communities [52,57], and DOC, NO 3 − , SRP, and TP provide available nutrients for bacterial growth [40,58]. Nutrients predominately explained the variation in lake bacterial communities, possibly due to the relatively uniform physical conditions [4,5]. Elevated inputs of phosphorus and nitrogen from its inflow streams have caused severe eutrophication and associated algae blooms in Erhai Lake.…”

Section: Discussionmentioning

confidence: 99%

“…Microbial assemblages are fundamental components of aquatic ecosystems and play a key role in biogeochemical cycles in both lotic and lentic ecosystems [1,2]. Their high diversity, small size, and rapid generation have caused microbes to become the most sensitive aquatic organisms to environmental perturbations, especially to nutrient alteration [3][4][5]. Understanding these responses is increasingly important given that biogeochemical cycles have been dramatically altered by human activities [6], with a two-fold increase in nitrogen (N) availability [7,8] and approximately a four-fold increase in phosphorus (P) mobilization [9,10] relative to preindustrial times.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impact of Nutrient and Stoichiometry Gradients on Microbial Assemblages in Erhai Lake and Its Input Streams

Liu

Elser

et al. 2019

Water

View full text Add to dashboard Cite

Networks of lakes and streams are linked by downslope flows of material and energy within catchments. Understanding how bacterial assemblages are associated with nutrients and stoichiometric gradients in lakes and streams is essential for understanding biogeochemical cycling in freshwater ecosystems. In this study, we conducted field sampling of bacterial communities from lake water and stream biofilms in Erhai Lake watershed. We determined bacterial communities using high-throughput 16S rRNA gene sequencing and explored the relationship between bacterial composition and environmental factors using networking analysis, canonical correspondence analysis (CCA), and variation partitioning analysis (VPA). Physicochemical parameters, nutrients, and nutrient ratios gradients between the lake and the streams were strongly associated with the differences in community composition and the dominant taxa. Cyanobacteria dominated in Erhai Lake, while Proteobacteria dominated in streams. The stream bacterial network was more stable with multiple stressors, including physicochemical-factors and nutrient-factors, while the lake bacterial network was more fragile and susceptible to human activities with dominant nutrients (phosphorus). Negative correlations between bacterial communities and soluble reactive phosphorus (SRP) as well as positive correlations between bacterial communities and dissolved organic carbon (DOC) in the network indicated these factors had strong effect on bacterial succession. Erhai Lake is in a eutrophic state, and high relative abundances of Synechococcus (40.62%) and Microcystis (16.2%) were noted during the course of our study. CCA indicated that nutrients (phosphorus) were key parameters driving Cyanobacteria-dominated community structure. By classifying the environmental factors into five categories, VPA analyses identified that P-factor (total phosphorus (TP) and SRP) as well as the synergistic effect of C-factor (DOC), N-factor (NO3−), and P-factor (TP and SRP) played a central role in structuring the bacterial communities in Erhai Lake. Heterogeneous physicochemical conditions explained the variations in bacterial assemblages in streams. This study provides a picture of stream–lake linkages from the perspective of bacterial community structure as well as key factors driving bacterial assemblages within lakes and streams at the whole watershed scale. We further argue that better management of phosphorus on the watershed scale is needed for ameliorating eutrophication of Erhai Lake.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of Nutrient and Stoichiometry Gradients on Microbial Assemblages in Erhai Lake and Its Input Streams

Liu

Elser

et al. 2019

Water

View full text Add to dashboard Cite

show abstract

“…is the most natural (forest catchment; peatbog bordering the lake to the south) and the deepest, dimictic, eutrophic water body with brown-coloured water. The structure of the macrophyte communities in the lakes were described by Sender (2012Sender ( , 2016 and Mieczan et al (2016). The highest phytolittoral zone occurs in Lake Skomielno, where 15 plant assemblages is represented by 55 species, and common reed comprises ca.…”

Section: Study Areamentioning

confidence: 98%

The role of abiotic and biotic environmental factors in shaping epiphyton on common reed in shallow, hydrologically transformed, temperate lakes

Toporowska

Rechulicz

Adamczuk

et al. 2018

Knowl. Manag. Aquat. Ecosyst.

Self Cite

View full text Add to dashboard Cite

-Epiphytic algae are an important group of organisms involved in primary productivity, nutrient cycling, and energy transfer in littoral food webs. However, multifactorial studies conducted on epiphyton on the same substrate across a spectrum of environmental parameters are very limited. Here, we present first complex field study on the role of abiotic and biotic factors in shaping the species richness, diversity, abundance, and biomass composition of epiphyton on common reed in four shallow lakes with different trophic status, water and fish management, and the abundance and structure of potential algal grazers: littoral crustaceans and fish. The obtained results revealed that the algal taxa richness was the lowest in the hypertrophic lake and the highest in the meso-eutrophic lake. Epiphyton abundance (predominated by pennate diatoms) and biomass were found to be the highest in eutrophic water bodies. Biomass consisted primarily of diatoms, but we found the seasonal predominance of filamentous Chlorophyta (in the eutrophic lakes) and Chlorophyceae (in the meso-eutrophic lake). Redundancy analysis (RDA) showed that the frequency of water level fluctuations was the most significant variable in the composition of epiphyton. RDA also revealed the importance of grazing pressure of fish. Thus, in hydrologically transformed lakes, man-made factors may be of great relevance in the development of epiphytic algae.Keywords: Epiphyton abundance / biomass / diversity / algal grazers / TSI index Résumé -Le rôle des facteurs environnementaux abiotiques et biotiques dans la formation de l'épiphyton sur le roseau commun dans les lacs tempérés peu profonds et modifiés sur le plan hydrologique. Les algues épiphytiques constituent un groupe important d'organismes impliqués dans la productivité primaire, le cycle des éléments nutritifs et le transfert d'énergie dans les réseaux trophiques littoraux. Toutefois, les études multifactorielles menées sur l'épiphyton sur le même substrat portant sur un éventail de paramètres environnementaux sont très limitées. Nous présentons ici une première étude de terrain complexe sur le rôle des facteurs abiotiques et biotiques dans la formation de la richesse, de la diversité, de l'abondance et de la composition de la biomasse de l'épiphyton sur les roseaux communs dans quatre lacs peu profonds ayant différents statuts trophiques, gestion de l'eau et des poissons, ainsi que l'abondance et la structure des brouteurs d'algues potentiels: crustacés littoraux et poissons. Les résultats obtenus ont révélé que la richesse taxonomique des algues était la plus faible dans le lac hyper-eutrophe et la plus élevée dans le lac méso-eutrophe. L'abondance de l'épiphyton (dominée par les diatomées pennées) et la biomasse étaient les plus élevées dans les plans d'eau eutrophes. La biomasse se composait principalement de diatomées, mais nous avons trouvé la dominance saisonnière de Chlorophyta filamenteux (dans les lacs eutrophes) et de Chlorophyceae (dans le lac méso-eutrophique). L'analyse de redondanc...

show abstract

“…In eutrophic shallow lakes, periphytic assemblages have been shown to be associated with P tot and N tot (Jones and Sayer, 2003), and with a combination of physical variables, e.g. water level, and chemical variables, such as pH, N, and DOC (Mieczan et al, 2016). The RDA showed that nutrients were the dominant factors controlling distribution patterns in ciliate assemblages.…”

Section: Food Web Vs Environmental Parametersmentioning

confidence: 99%

“…Filamentous algae, even cyanobacteria, can be selectively consumed by macroinvertebrate grazers, such as the chironomid Endochironomus albipennis. Selective foraging on filamentous algae may significantly reduce their biomass (Tarkowska-Kukuryk, 2013;Mieczan et al, 2016). Temperature is another factor likely to substantially influence periphyton succession.…”

Section: Food Web Vs Environmental Parametersmentioning

confidence: 99%

The effect of epiphytic macroinvertebrates on microbial communities in different types of macrophyte-dominated shallow lakes

Mieczan

Tarkowska‐Kukuryk

Árva

et al. 2018

Knowl. Manag. Aquat. Ecosyst.

Self Cite

View full text Add to dashboard Cite

-Complex interactions between epiphytic fauna and microbial food webs in periphyton are vital to the ecosystem ecology of shallow lakes. However, little is known about how different types of macrophyte dominated lakes may influence microbial and metazoan communities. The goal of the present study was to examine the impact of metazoan on microbial food web in three different types of lakes (Stratiotes-dominated, Ceratophyllum-dominated and Potamogeton-dominated). The results of this study suggest a strong correlations between chironomid larvae, small Metazoa and microbial communities in the periphyton of macrophyte-dominated lakes. Weak relations between food web components were found in the Potamogeton-dominated and Ceratophyllum-dominated lakes, where environmental variables explained the bulk of the total variance in periphyton abundance, whereas strong predator-prey relations were noted in the Stratiotes-dominated lake, where environmental variables had a minor role in the total variance in periphyton abundance. Our study contributes to knowledge of the functioning of eutrophic lakes in the current era of increasing eutrophication caused by climate change and human activity.Keywords: Periphyton / food web / eutrophication / macrophyte / microbial communities Résumé -L'effet des macroinvertébrés épiphytiques sur les communautés microbiennes dans différents types de lacs peu profonds dominés par les macrophytes. Les interactions complexes entre la faune épiphytique et les réseaux trophiques microbiens dans le périphyton sont essentielles à l'écologie des écosystèmes des lacs peu profonds. Cependant, on sait peu de choses sur la façon dont différents types de lacs dominés par les macrophytes peuvent influencer les communautés microbiennes et métazoaires. L'objectif de la présente étude était d'examiner l'impact des métazoaires sur la chaîne alimentaire microbienne dans trois différents types de lacs (dominés par Stratiotes, dominés par Ceratophyllum et par Potamogeton). Des relations faibles entre les composantes du réseau trophique ont été observées dans les lacs dominés par Potamogeton et Ceratophyllum, où les variables environnementales expliquaient la plus grande partie de la variance totale de l'abondance du périphyton, alors que les relations prédateurs-proies étaient fortes dans le lac à Stratiotes. Les variables environnementales ont joué un rôle mineur dans la variance totale de l'abondance du périphyton. Notre étude contribue à la connaissance du fonctionnement des lacs eutrophes dans la période actuelle d'eutrophisation croissante causée par le changement climatique et l'activité humaine.

show abstract

Effect of water chemistry on zooplanktonic and microbial communities across freshwater ecotones in different macrophyte-dominated shallow lakes

Abstract: ABSTRACT

Cited by 7 publications

References 49 publications

Impact of Nutrient and Stoichiometry Gradients on Microbial Assemblages in Erhai Lake and Its Input Streams

Impact of Nutrient and Stoichiometry Gradients on Microbial Assemblages in Erhai Lake and Its Input Streams

The role of abiotic and biotic environmental factors in shaping epiphyton on common reed in shallow, hydrologically transformed, temperate lakes

The effect of epiphytic macroinvertebrates on microbial communities in different types of macrophyte-dominated shallow lakes

Contact Info

Product

Resources

About