International Review of Hydrobiology最新文献

{"title":"Changes in summer diatom composition and water quality in urban lakes within a metropolitan area in central China","authors":"Jia Liang,&nbsp;Chunling Huang,&nbsp;Mark A. Stevenson,&nbsp;Qianglong Qiao,&nbsp;Linghan Zeng,&nbsp;Xu Chen","doi":"10.1002/iroh.201801953","DOIUrl":"10.1002/iroh.201801953","url":null,"abstract":"<p>Urbanization is altering water quality and biotic communities of lake ecosystems worldwide, especially in developing regions. In this study, the diatom community structure and water quality of the epilimnion were analyzed in 38 lakes (40 sampling sites) in Wuhan City (central China) to assess the impacts of urbanization on lake ecosystems. Diatom communities displayed clear variation along the urban-to-rural gradient, with blooms of eutrophic species found in urban lakes in contrast to higher abundances of mesotrophic or oligotrophic taxa in rural lakes. Redundancy analyses revealed that the diatom community recognition to species, genus, and ecological guild level were all significantly correlated with Chl <i>a</i>, Si, and secchi depth, indicating that the changes in diatom communities were mainly explained by differences in nutrient concentrations and light condition. Considering the rapid urbanization and population expansion, it is important to carry out effective measures for the protection of these lake ecosystems, especially by reducing sewage discharge. The high consistency found between diatom community classification and water quality status highlights the applicability of diatoms for bioindication of shallow urban lakes, especially in rapidly developing cities. Even the taxonomic determination at the level of genera or ecological guilds can enable rapid water-quality assessment.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"105 3-4","pages":"94-105"},"PeriodicalIF":1.9,"publicationDate":"2020-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201801953","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48190544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The key role of increased fine sediment loading in shaping macroinvertebrate communities along a multiple stressor gradient in a Eurasian steppe river (Kharaa River, Mongolia)","authors":"Michael Schäffer,&nbsp;Claudia Hellmann,&nbsp;Saulyegul Avlyush,&nbsp;Dietrich Borchardt","doi":"10.1002/iroh.201902007","DOIUrl":"10.1002/iroh.201902007","url":null,"abstract":"<p>Aquatic communities across the Eurasian steppe face increasing anthropogenic pressures due to rapid population growth, catchment-wide land-use changes, and climate change. The particular type, intensity, overlay, and legacy of impacts along longitudinal gradients of Eurasian river networks provide a unique setting to investigate ecological responses in identifiable multiple stressor environments. We studied macroinvertebrate communities along the Kharaa River, Mongolia, which display a distinct, downstream gradient of moderate nutrient enrichment, disturbed bank morphology, reduced riparian vegetation, elevated turbidity, increased fine sediment substrate proportions, and fine sediment intrusion into the hyporheic zone. Within the encountered ranges of physical and chemical environmental factors (TP 0.02–0.09  mg/L, TN 0.33–0.96  mg/L, conductivity 167–322 µS/cm, formazin nephelometric units 0.62–5.43) and hyporheic fine sediment intrusion (0.9–1.6 g dry weight [DW]·L⁻¹·day⁻¹) the population densities and biomass of macroinvertebrates were high (5,313 ± 410 individuals/m² and 2,656 ± 152 mg DW/m²) and notably stable. In contrast, macroinvertebrate community structure showed strong and statistically significant negative linear relationships (Pearson's <i>r</i>) with turbidity, that is, for taxa richness (<i>r</i> = −.83), Shannon index of diversity (<i>r</i> = −.89), Evenness (<i>r</i> = −.86), the relative abundance of Ephemeroptera, Plecoptera, and Trichoptera (EPT) individuals (<i>r</i> = −.93) and relative biomass of hard substrate colonizers (<i>r</i> = −.86). The relative biomasses of fine substrate colonizers, as well as Chironomidae and Oligochaeta (both <i>r</i> = .76), were positively correlated with mean turbidity values. In addition, the Proportion of Sediment-sensitive Invertebrates (PSI) methodology was adjusted for local application and the resulting index scores followed a similar pattern, with PSI also being significantly correlated (<i>r</i> = .66) with the relative abundance of EPT individuals, the latter being the most sensitive macroinvertebrate community index. We conclude that fine sediment load is the key factor for shaping macroinvertebrate community structure in the multistressor setting of the Kharaa River followed by hydromorphological habitat complexity determined by shear stress, substrate, and grain size distributions. We suggest that the implementation of effective regional management strategies aiming at the reduction of fine sediment pollution should be given the highest priority.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"105 1-2","pages":"5-19"},"PeriodicalIF":1.9,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201902007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45787234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Response of stream fungi on decomposing leaves to experimental drying","authors":"Dev K. Niyogi,&nbsp;Chia-Yi Hu,&nbsp;Brett P. Vessell","doi":"10.1002/iroh.201902015","DOIUrl":"10.1002/iroh.201902015","url":null,"abstract":"<p>Climate change may lead to increased droughts in the future, which in turn may lead to increased periods of stream drying. We conducted an experiment to test the effects of drying on fungal communities and microbial activity on decaying leaves from a stream. Our experimental setup included immersion of maple leaf cores for 2 weeks in a small stream to allow for the colonization of microbes. Leaves were then subjected for 2 weeks to four treatments: one control, where leaves stayed immersed in the stream, and three drying treatments in different settings (field, lab, and oven). Leaves were then returned to sterile water for 2 weeks of recovery. Microbial respiration declined after all drying treatments compared to the control, with the oven-dried leaves taking the longest time to recover. All drying treatments had similar respiration to each other and the control after 2 weeks of immersion recovery. Fungal communities on the leaves were assessed by polymerase chain reaction amplification of fungal DNA from leaves followed by denaturing gradient gel electrophoresis (DGGE). Most treatments had very similar communities based on phylotypes from DGGE, with little change during drying and recovery compared to immersion controls. However, the oven-dried leaves had a very different community developing during recovery. There were no differences in diversity or richness of DGGE phylotypes among treatments after recovery. Overall, the fungal communities, in our experiment, appeared resilient to the effects of short-term drying, with little change to community structure and relatively fast recovery in activity after rewetting.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"105 1-2","pages":"52-58"},"PeriodicalIF":1.9,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201902015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42145227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on aquatic ecosystems – freshwater and marine environments and their management","authors":"","doi":"10.1002/iroh.201973010","DOIUrl":"https://doi.org/10.1002/iroh.201973010","url":null,"abstract":"","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"104 5-6","pages":"95"},"PeriodicalIF":1.9,"publicationDate":"2019-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201973010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92159036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Climatically induced temperature instability of groundwater-dependent habitats will suppress cold-adapted Clitellata species","authors":"Jana Schenková,&nbsp;Vendula Polášková,&nbsp;Martina Bílková,&nbsp;Jindřiška Bojková,&nbsp;Vít Syrovátka,&nbsp;Marek Polášek,&nbsp;Michal Horsák","doi":"10.1002/iroh.201902006","DOIUrl":"10.1002/iroh.201902006","url":null,"abstract":"<p>Groundwater-dependent ecosystems are recognized as biodiversity hotspots, being, apart many negative human impacts, highly threatened also by ongoing climate warming. Clitellata (Annelida) are dominant invertebrates of permanent fauna in spring habitats, representing a heterogeneous group including both specialized cold-stenothermic and ubiquitous eurythermic species. Therefore, they seem to be a good model group to compare the effects of local springwater temperature (recorded in situ by data loggers) and mesoclimate (i.e., local) air temperature. By the analysis of clitellate assemblages at 41 isolated Western Carpathian spring fens, we found that their species composition was significantly driven by mesoclimate air temperature and springwater temperature independently of other important environmental variables (i.e., water mineralization, oxygen content, and total organic carbon). The effect of various environment-related and temperature-related variables on the number of clitellate species was analyzed separately for two categories, that is, substrate dwellers (endobenthic species) and surface-active (epibenthic) species. The decrease of the number of species with the increasing amount of inorganic particles &lt;500 µm in substrate was observed in the substrate dwellers. Mesoclimate air temperature had no significant effect on the number of species of substrate dwellers. However, water temperature, specifically its daily fluctuation, turned out to have a strong effect. Only the sites with no or moderate fluctuation were inhabited by cold-stenotherm spring specialists and cold-water species. In contrast, no significant response to any temperature parameter was found for the number of surface-active species, which was driven only by other environmental variables. Our results suggest that climatically induced increase in temperature fluctuation of spring waters can result in notable reduction of cold-adapted clitellate species (mainly the family Lumbriculidae) at the expense of eurythermic species. Such a scenario predicts compositional changes leading to clitellate assemblages with a dominance of generalist and semi-aquatic species.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"105 3-4","pages":"85-93"},"PeriodicalIF":1.9,"publicationDate":"2019-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201902006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48864688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neutral effects of turbidity across a gradient of vegetation density on the predation of juvenile mandarin fish (Siniperca chuatsi)","authors":"Wei Li,&nbsp;Tanglin Zhang,&nbsp;Brendan J. Hicks,&nbsp;Chaowen Zhang,&nbsp;Zhongjie Li,&nbsp;Jiashou Liu","doi":"10.1002/iroh.201601848","DOIUrl":"10.1002/iroh.201601848","url":null,"abstract":"<p>Mandarin fish <i>Siniperca chuatsi</i> is a widespread piscivorous species in lakes of the Yangtze River basin. However, their wild population has drastically declined, and survival and growth rates of stocked populations are low. Anthropogenic activities have reduced submersed vegetation and increased turbidity in lakes containing <i>S. chuatsi</i>, thus, we hypothesize that reduced submersed vegetation and increased turbidity could inhibit the feeding efficiency of juvenile <i>S. chuatsi</i>, subsequently reducing their growth and survival. To test this hypothesis, we experimentally examined the effects of a range of vegetation density and turbidity on predation of <i>S. chuatsi</i>. Laboratory predation trials were performed with a common prey fish <i>Carassius auratus</i> offered simultaneously to <i>S. chuatsi</i> in clear or turbid water under five different levels of vegetation density (0, 20, 40, 80, and 120 stems/m²). The total prey consumption per day (in 24 hr) by <i>S. chuatsi</i> on <i>C. auratus</i> was significantly affected by vegetation density, with the consumption positively linearly related with increased vegetation density. The total prey consumption was unaffected by turbidity. Prey size selection was not significantly influenced by vegetation density or turbidity. These results indicate that turbidity does not appear to negatively affect the predation of <i>S. chuatsi</i>, but a reduction of vegetation can negatively influence feeding induced by decreased predation efficiency, and hence might hinder survival and growth.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"104 5-6","pages":"99-105"},"PeriodicalIF":1.9,"publicationDate":"2019-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201601848","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48184160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Urbanisation reduces litter breakdown rates and affects benthic invertebrate structure in Pampean streams","authors":"Marina Tagliaferro,&nbsp;Adonis Giorgi,&nbsp;Ana Torremorell,&nbsp;Ricardo Albariño","doi":"10.1002/iroh.201902000","DOIUrl":"10.1002/iroh.201902000","url":null,"abstract":"<p>The Pampean region has become one of the most urbanised areas in South America with more than 91% of the Argentinean population. This region is ideal for human settlements that have historically chosen riverine grassland areas to settle. Consequently, urban streams are increasingly subjected to pressures affecting their functioning. The aim of this study was to assess urbanisation effects on two proxies of stream integrity: leaf litter decay and benthic invertebrate assemblage colonizing litter in streams draining urbanised versus reference grassland areas. We placed plastic coarse- and fine-mesh bags containing <i>Populus nigra</i> leaf litter along three urban and three reference reaches, and these were retrieved periodically to determine the remaining leaf mass and the identity and quantity of detritivore assemblage colonizing bags. The decay rate was negatively affected by urbanisation, and it followed a negative relationship with increasing Nitrogen concentration (mostly ammonia) and a hump-shape relationship against soluble reactive phosphorus. Urban invertebrate assemblages were significantly different from the reference reaches, and were species-poorer and characterized by tolerant taxa belonging to Naididae, Glossiphoniidae, and Nematoda, whereas Hyalellidae, Aeglidae, Chironomidae, Caenidae, Baetidae, and Hydrobiidae represented the reference reaches. Our proxies of structural (i.e., invertebrate assemblages) and functional (i.e., leaf litter breakdown) stream integrity were mostly driven by a nutrient-enrichment gradient and responded in a similar direction but with different magnitude to urban alterations.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"105 1-2","pages":"33-43"},"PeriodicalIF":1.9,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201902000","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42271120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conversion of tropical forests to agriculture alters the accrual, stoichiometry, nutrient limitation, and taxonomic composition of stream periphyton","authors":"Flavia Tromboni,&nbsp;Christine Lourenço-Amorim,&nbsp;Vinicius Neres-Lima,&nbsp;Steven A. Thomas,&nbsp;Monalisa Silva-Araújo,&nbsp;Rafael Feijó-Lima,&nbsp;Eduardo F. Silva-Júnior,&nbsp;Thomas Heatherly II,&nbsp;Timothy P. Moulton,&nbsp;Eugenia Zandonà","doi":"10.1002/iroh.201801963","DOIUrl":"10.1002/iroh.201801963","url":null,"abstract":"<p>The conversion of forests to agriculture in tropical areas profoundly changes adjacent streams by modifying hydrological conditions, altering light regimes, and increasing nutrient concentrations. In this study, we used an integrative approach to examine how transformations of intact forests affected the physical, chemical, and biological properties of periphyton, in three Brazilian Atlantic rainforest streams. We found that riparian land use change affected the stream periphyton in a variety of ways that were linked to the availability of light and nutrients. Periphyton standing stocks and accrual rates of new periphyton biomass on tiles were higher in deforested reaches than forested reaches. Linear mixed-model analyses showed that the increase of chlorophyll-<i>a</i> in the periphyton was explained by the increase in deforestation and soluble reactive phosphorus concentration. Deforestation also altered periphyton stoichiometry as deforested streams exhibited lower C:P, whereas C:N ratios decreased with increasing NH₄⁺ concentration that was higher in some deforested reaches. Periphyton productivity appeared to be limited by light in forested reaches and by nutrients in deforested reaches. There was differential availability of nitrogen and phosphorus in the deforested reaches, depending on land use type, and this resulted in different nutrient limitation. Periphyton community structure shifted from taxa less tolerant to high nutrients and light found in forested sites, to species tolerant to these conditions dominating periphyton assemblages in deforested sites. The loss of canopy cover was the strongest predictor of community composition for all sites, whereas phosphorus concentration was the best predictor of algal abundance in deforested reaches. This study highlights the complex effects of forest clearing on stream periphyton, ranging from changes to biomass accrual, nutrient limitation, stoichiometry, and community structure. We show the importance of using a comprehensive approach to help determine and predict how deforestation impacts stream ecosystems.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"104 5-6","pages":"116-126"},"PeriodicalIF":1.9,"publicationDate":"2019-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201801963","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42016390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on aquatic ecosystems – freshwater and marine environments and their management","authors":"","doi":"10.1002/iroh.201972010","DOIUrl":"https://doi.org/10.1002/iroh.201972010","url":null,"abstract":"","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"104 3-4","pages":"45"},"PeriodicalIF":1.9,"publicationDate":"2019-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201972010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91940194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functional redundancy in leaf-litter-associated aquatic hyphomycetes: Fine sediment alters community composition but hardly decomposer activity","authors":"Aingeru Martínez,&nbsp;Ana V. Lírio,&nbsp;Isabel Febra,&nbsp;João Rosa,&nbsp;Ana L. Gonçalves,&nbsp;Cristina Canhoto","doi":"10.1002/iroh.201901997","DOIUrl":"10.1002/iroh.201901997","url":null,"abstract":"<p>The increase in the flow of fine sediments to the aquatic ecosystems (AH), as a consequence of human activities, is a widespread stressor that may alter the structure of biological communities and ecosystem processes. In this study, the effects of sediments (Ø &lt; 2 mm) on the structure (biomass and composition) and activity (decomposer activity and sporulation rate) of litter-associated microorganisms (mainly AH) were investigated. For this, leaf discs of in-stream preconditioned <i>Quercus robur</i> were incubated in microcosms for 30 days under the influence of four different grain-size (&lt;2, 1–0.5, 0.5–0.063, and &lt;0.063 mm) sediments kept in motion. Fine sediments barely altered microbial decomposer activity and did not affect fungal biomass. Meanwhile, the sporulation rate was enhanced by sediments’ presence, the results being grain-size-dependent, and the fungal community composition was affected by the presence of sediments, independently of grain size. These findings evidence the functional redundancy of microbial assemblages involved in leaf litter decomposition in freshwaters.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"105 1-2","pages":"44-51"},"PeriodicalIF":1.9,"publicationDate":"2019-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.201901997","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43956779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}