International Review of Hydrobiology最新文献

{"title":"Environmental heterogeneity, dispersal mode and habitat specialisation modify within-site beta diversity of spring macroinvertebrates","authors":"Vanda Šorfová,&nbsp;Martina Poláková,&nbsp;Jindřiška Bojková,&nbsp;Vendula Polášková,&nbsp;Jana Schenková,&nbsp;Michal Horsák","doi":"10.1002/iroh.202102112","DOIUrl":"10.1002/iroh.202102112","url":null,"abstract":"<p>Spring helocrenes are a unique aquatic environment with high biotic diversity. Although environmental heterogeneity has traditionally been assumed to explain the high species richness of spring habitats, this assumption has never been properly tested. Here, we sampled macroinvertebrates from two calcareous helocrenes in Slovakia with visually distinguishable mesohabitat heterogeneity. We hypothesise that macroinvertebrate beta diversity significantly increases with environmental heterogeneity even at a small within-site spatial scale. We also examined four species-trait categories, that is, active or passive dispersers and habitat specialists or generalists. Significant spatial structuring of environmental heterogeneity was found at one site, whereas the other site did not show a clear spatial pattern. Strong associations were found between beta diversity of all species trait categories and environmental heterogeneity at the first site, while there were virtually no associations at the second site. Specialists were not spatially structured at any of the sites examined. Our results suggest that invertebrate beta diversity responds positively to environmental heterogeneity at a site by also tracking spatial structuring of abiotic conditions. However, the response may vary depending on the dispersal mode and habitat specialisation of the invertebrates.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"107 3-4","pages":"145-153"},"PeriodicalIF":1.9,"publicationDate":"2022-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42155329","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":"Large wood in river restoration: A case study on the effects on hydromorphology, biodiversity, and ecosystem functioning","authors":"Christine Anlanger,&nbsp;Katrin Attermeyer,&nbsp;Sandra Hille,&nbsp;Norbert Kamjunke,&nbsp;Katinka Koll,&nbsp;Manuela König,&nbsp;Ingo Schnauder,&nbsp;Claudia Nogueira Tavares,&nbsp;Markus Weitere,&nbsp;Mario Brauns","doi":"10.1002/iroh.202102089","DOIUrl":"10.1002/iroh.202102089","url":null,"abstract":"<p>Large wood (LW) is an integral part of natural river ecosystems and determines their ecological integrity by modulating hydromorphology and providing habitats. Hence, LW installations are a common restoration measure in large rivers, even if effects on biodiversity are ambiguous or unknown for ecosystem functioning. Here we quantified the hydromorphological, biological, and functional effects of LW 8 months after installation in a large gravel-bed river. Both morphological and flow diversity increased strongly by 821% and 127%, respectively. Similarly, fish abundance increased nearly 10-fold, and macroinvertebrate diversity increased by 35%. Ecosystem functions benefited from LW installation and increased significantly (e.g., by up to 390% for bacterial production) at sites influenced by LW compared to those without LW. Our results highlight the role of the bark habitat of LW that increased the direct effects of LW via the provision of new habitat and stimulated ecosystem-wide processes. Our integrative approach evaluating the success of LW installations in a large river revealed cascading effects from the provisioning of new habitats, the increase of species diversity to higher ecosystem functioning. It also demonstrated that hydromorphological parameters or community composition alone are insufficient to quantify the complex effects of LW installation, which underlines the necessity to evaluate restoration success with different measures.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"107 1-2","pages":"34-45"},"PeriodicalIF":1.9,"publicationDate":"2022-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/iroh.202102089","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43816647","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":"Wake flow patterns and turbulence around naturally deposited and installed trees in a gravel bed river","authors":"Ingo Schnauder,&nbsp;Christine Anlanger,&nbsp;Katinka Koll","doi":"10.1002/iroh.202102096","DOIUrl":"10.1002/iroh.202102096","url":null,"abstract":"<p>Large wood structures, such as wood fragments, debris jams, or entire trees, create flow and habitat diversity in rivers. A key flow feature associated with such structures is the wake, characterised by a core zone of reduced velocity and shear layers at its margins. Wakes are largely controlled by geometric and structural properties of the wood. In the present study, the flow patterns and turbulence created by different wood structures were compared at two study sites: naturally eroded and fragmented oaks (Site A) and artificial poplar installations (Site B). Flow and turbulence were quantified using pointwise velocity measurements with acoustic Doppler velocimeters (ADVs) and surface particle tracking velocimetry (SPTV). The measured flow patterns exhibited similarities with shallow porous wakes that feature fluid advection through the structure into the wake core downstream. Two additional features of wood structures were identified in the present study: (i) the growth of the shear layers was hindered by bed friction like for shallow mixing layers and (ii) the presence of a tree stem and sediment deposit in the wake centre delayed or even suppressed the interaction of the shear layers and vortex street formation similar to a wake-splitter plate. Methodologically, the combined ADV/SPTV measurement approach and the use of analytical models for shallow mixing layers proved to be highly valuable to decipher the complex flow patterns around wood structures in the field.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"107 1-2","pages":"22-33"},"PeriodicalIF":1.9,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/iroh.202102096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41301899","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":"Are natural floods accelerators for streambank vegetation development in floodplain restoration?","authors":"Barbara Stammel,&nbsp;Julia Stäps,&nbsp;André Schwab,&nbsp;Kathrin Kiehl","doi":"10.1002/iroh.202102091","DOIUrl":"10.1002/iroh.202102091","url":null,"abstract":"<p>Riverbanks are very dynamic habitats for riparian vegetation strongly influenced by fluvial and geomorphic processes. This habitat type was severely reduced in the past by river straightening and bank stabilisation. Restoration and establishment of new floodplain streams promote this habitat, but a directed succession to later stages was observed many times. Our study aimed to analyse whether the often observed directed succession of the streambank vegetation after restoration implementation could be reversed by a natural flood along a newly created floodplain stream. We investigated the effects of a natural flood in 2013 and different prerestoration conditions on species development in the riparian zone. Vegetation was studied along 12 transects in four different sections from 2011 to 2014. Species composition differed strongly between the sections. Species richness was lowest in a newly dug steep section with high morphological dynamics and highest on wider flat streambanks. Changes during the years reflecting different hydrological events varied between sections. The high natural flood in 2013 reduced the cover of the herb layer and increased bare ground, which led in most sections to a loss of nontarget species. Total target species richness did not change due to the natural flood, while target species showed a high turnover rate. In the following year, however, the flood-induced development of species composition, in general, was reversed. Natural floods changed abiotic and biotic conditions along the streambank, but they did not accelerate ecological restoration towards predefined target ecosystems. However, they were necessary to preserve the needed dynamic vegetation changes and species turnover to hinder the succession to later stages dominated by a few species. Our study shows that riparian vegetation near the streambank can be monitored most effectively in cross-profile transects, both in the long-term and event-related.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"107 1-2","pages":"76-87"},"PeriodicalIF":1.9,"publicationDate":"2021-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/iroh.202102091","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41741603","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":"What do people think about technological enhancements of human beings? An introductory study using the Technological Enhancements Questionnaire in the context of values, the scientistic worldview, and the accepted versions of humanism.","authors":"Daniel Stefański, Łukasz Jach","doi":"10.5114/cipp.2021.110061","DOIUrl":"10.5114/cipp.2021.110061","url":null,"abstract":"<p><strong>Background: </strong>Rapid development of technologies increases the possibility of technological enhancements of human beings, e.g., in their cognitive skills or physical fitness. Attitudes towards such enhancements may result in their social acceptance or rejection.</p><p><strong>Participants and procedure: </strong>One hundred and thirty-nine young Polish adults participated in the study. Participants completed the designed Technological Enhancements Questionnaire (TEQ) and questionnaires to measure values, the scientistic worldview, and the accepted versions of humanism.</p><p><strong>Results: </strong>The study showed a one-dimensional TEQ structure and its satisfactory reliability. Attitudes towards technological enhancements correlated positively with achievement, self-direction in thought, power over resources, the scientistic worldview, and the evolutionary version of humanism. They also correlated negatively with tradition and the liberal version of humanism.</p><p><strong>Conclusions: </strong>The TEQ questionnaire is a short, reliable tool to measure attitudes towards technological enhancements. This preliminary study provided some significant results, but future work to validate the questionnaire is needed.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"66 1","pages":"71-84"},"PeriodicalIF":1.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10653345/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72787459","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":"Research on aquatic ecosystems – freshwater and marine environments and their management","authors":"","doi":"10.1002/iroh.202175010","DOIUrl":"https://doi.org/10.1002/iroh.202175010","url":null,"abstract":"","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"106 5-6","pages":"213"},"PeriodicalIF":1.9,"publicationDate":"2021-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/iroh.202175010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137876984","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":"Species' traits and taxonomic distance can predict the hatching phenology of ostracod (Crustacea) resting eggs from tropical floodplain lakes","authors":"Jonathan Rosa,&nbsp;Danielle K. Petsch,&nbsp;Koen Martens,&nbsp;Janet Higuti","doi":"10.1002/iroh.202102105","DOIUrl":"10.1002/iroh.202102105","url":null,"abstract":"<p>Freshwater ostracods are commonly found in temporary ponds and lakes, surviving drought periods by producing resting eggs. We investigated the hatching phenology of ostracod resting eggs from the sediments of temporary floodplain lakes, considering both the taxonomic distance between species and their functional traits, such as carapace size (length and height) and shape, valve ornamentation, and reproductive mode. In addition, we tested the hypotheses: (1) that the hatching time is more similar between congeneric ostracod species than between noncongeneric species; (2) that differences in hatching time between congeneric species are often related to differences in functional traits; (3) that both species composition and functional traits composition of hatchlings change over the incubation time, but with a reduction in the variability over time. The experiment was conducted for 98 days in the laboratory, and the microcosms were monitored weekly. The first hatching of an ostracod was recorded during the second week of incubation after hydration of the sediments. A total of 12 ostracod species hatched, belonging to the families Cyprididae and Candonidae. The above three hypotheses were corroborated. The time between inundation and first hatching was mostly similar for congeneric species in the genus <i>Chlamydotheca</i>, but was different between some species of <i>Strandesia</i>, which might be owing to differences in functional traits. The species composition and functional trait composition of the hatched ostracods were significantly different over the 14 weeks of incubation due to the different hatching phenology of different species. Furthermore, our results show that both taxonomic distance and functional traits can influence the hatching time of ostracod resting eggs from temporary floodplain lakes. Thus, future studies addressing the hatching phenology of ostracod resting eggs (and resting stages from other invertebrates) should also emphasize the use of functional traits.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"106 5-6","pages":"226-238"},"PeriodicalIF":1.9,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46930673","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":"Hydrochorous seed transport in a small river in Northern Germany as trait-dependent filter of plant dispersal and recruitment","authors":"Leonid Rasran,&nbsp;Kati Vogt,&nbsp;Kai Jensen","doi":"10.1002/iroh.202002076","DOIUrl":"10.1002/iroh.202002076","url":null,"abstract":"<p>We studied seed transport in the Upper Eider River (Northern Germany). Our main questions were: Diaspores of what species are transported in the river and which of them remain viable after the drift? Could functional species traits be used as predictors for the survival of plant propagules in course of water transport? The water body of the Upper Eider River was sampled for plant diaspores at two bridges with each four traps changed weekly during the whole year. Samples were separated into two equal groups. Each two samples per bridge and week were dried and seeds were counted manually. The other two samples were spread on sterilised soil for germination. Species composition and community weighted trait means were compared for dried samples (total transport) and seedlings (germinated after drift). About half of the species and 1/10 of the seeds were able to survive hydrochorous transport. Species traits (community weighted means) were not reliable predictors for survival of species during the hydrochorous transport, but the majority of traits reflect the differences between the transport pools of seeds and seedlings. Small seed size, ruderal life strategy, and high light preference correlate positively with germinability after the drift, while large-seeded species adapted to endozoochory tend to lose viability during hydrochory. Dispersal of terrestrial plants with running water in the studied small river system is a highly stochastic event. We did not find evidence that specific adaptations to hydrochory significantly contribute to its success. Nevertheless, a few functional traits can increase the probability for the species to pass through the ecological filter “hydrochory.” Among those traits are (i) small seed size (less vulnerability for mechanical stress), (ii) generalist dispersal mode, less dependent on other particular vectors, and (iii) ruderal life strategy.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"106 5-6","pages":"277-286"},"PeriodicalIF":1.9,"publicationDate":"2021-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/iroh.202002076","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41771320","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":"Mechanistic approach and elements of metacommunity structure of the zooplankton of palm swamps in the Neotropical region","authors":"Clemerson Richard Pedroso,&nbsp;Fernando Miranda Lansac-Tôha,&nbsp;Tatiane Mantovano,&nbsp;Fábio Amodêo Lansac-Tôha","doi":"10.1002/iroh.202102092","DOIUrl":"10.1002/iroh.202102092","url":null,"abstract":"<p>Studies of metacommunities are of great importance for ecological knowledge because they assess how the processes related to the species' niche and the dispersion processes structure the communities. In this context, the objective of the present study was to investigate the main assembly mechanisms responsible for the structuring of the zooplankton community in a complex of neotropical palm swamps (“veredas”), consisting of sets of small common ponds in the Brazilian savannah, similar to swamps. Zooplankton were sampled in the pelagic region of 15 <i>veredas</i> in April 2018. The zooplankton total community showed a distribution related to spatial and environmental factors. For Rotifera the relative importance of environmental factors was greater, while Cladocera and Copepoda were more structured by space. The community was still structured according to the Gleasonian model of distribution, where Rotifera presented a Gleasonian structure, Cladocera quasi-Gleasonian, and Copepoda quasi-nested random. The influence of environmental and spatial factors and the resulting structure of the zooplankton metacommunity seem to be directly related to the dispersal capacity in each group. Differences in relative importance of the factors that shaped the community highlight the idiosyncratic characteristics of zooplankton species. Thus, we emphasize the importance of using the two approaches of metacommunity studies to help to elucidate the processes that govern the structuring of metacommunities.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"106 5-6","pages":"217-225"},"PeriodicalIF":1.9,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.202102092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46789692","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":"Effects of flooding duration on the occurrence of three hardwood floodplain forest species inside and outside a dike relocation area at the Elbe River","authors":"Melanie Schindler,&nbsp;Tobias W. Donath,&nbsp;André Terwei,&nbsp;Kristin Ludewig","doi":"10.1002/iroh.202002078","DOIUrl":"10.1002/iroh.202002078","url":null,"abstract":"<p>Floodplain forests have become rare in Europe due to anthropogenic changes. A critical aspect of their restoration is reintroducing flooding via dike relocation, as implemented at the Elbe River near Lenzen/Germany. How forest development is influenced by dike relocation is still unclear and difficult to predict. Inside the dike relocation area at the Elbe River, most trees were planted. Due to high tree mortality, we asked if the relative elevation of the planted trees and thus the number of flooding days inside the relocation area was comparable to the prevailing flooding regime in the surrounding active floodplain. Therefore, the positions of <i>Ulmus laevis, Quercus robur</i>, and <i>Crataegus monogyna</i> individuals were recorded using a DGPS and merged with a digital terrain model. Subsequently, relative elevations and numbers of flooding days per year and growing season (averages for 2011–2017) were calculated. The most flooding tolerant species, <i>U. laevis</i>, occurred at the lowest sites and tolerated the highest number of flooding days, followed by <i>Q. robur</i>, and finally by the least flooding tolerant species <i>C. monogyna</i>. All three species occurred at lower sites inside the dike relocation area and were exposed to longer flooding durations compared to sites outside the area. This was due to the complex morphology of this area and its special flooding and flow dynamics, which differed from the conditions in the surrounding active floodplain. Although the mean flooding duration was within the growth range of hardwood floodplain forests (Ficario-Ulmetum), most individuals may not have established at the planted sites under natural conditions. Therefore, we recommend not relying only on plantings but also allowing natural succession. Then, species that can cope with the hydrological site characteristics may also establish in the long term.</p>","PeriodicalId":54928,"journal":{"name":"International Review of Hydrobiology","volume":"107 1-2","pages":"100-107"},"PeriodicalIF":1.9,"publicationDate":"2021-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/iroh.202002078","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43377452","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}