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Erős T, Funk A, Pont D, Hein T, Meulenbroek P, Preiszner B, Valentini A, Czeglédi I. eDNA metabarcoding reveals the role of habitat specialization and spatial and environmental variability in shaping diversity patterns of fish metacommunities. PLoS One 2024; 19:e0296310. [PMID: 38165893 PMCID: PMC10760726 DOI: 10.1371/journal.pone.0296310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 12/09/2023] [Indexed: 01/04/2024] Open
Abstract
Information is scarce on how environmental and dispersal processes interact with biological features of the organisms, such as their habitat affinity, to influence patterns in biodiversity. We examined the role of habitat specialist vs. generalist species, and the spatial configuration, connectivity, and different environmental characteristics of river-floodplain habitats to get a more mechanistic understanding of alpha and beta diversity of fish metacommunities. We used environmental DNA metabarcoding to characterize species (taxa) richness and composition in two separate floodplains of the river Danube (Austria and Hungary) during two different hydrological conditions. Results showed that differences in the number of generalist and specialist species and their responses to connectivity and environmental gradients influenced patterns in alpha and beta diversity. Of the components of beta diversity, richness difference (nestedness) showed consistently higher values than replacement (turnover), mainly due to the decrease of specialist species along the connectivity gradient (i.e., from the mainstem to the most isolated oxbows). Variance in both alpha and beta diversity could be well predicted by a set of local and regional variables, despite high environmental variability, which characterizes river-floodplain ecosystems. Of these, the joint or shared variance fractions proved to be the most important, which indicates that the effects of local and regional processes cannot be unambiguously separated in these river-floodplain systems. Local scale environmental variables were more important determinants of both alpha and beta diversity in the low water period than in the high water period. These results indicate the differential role of local and regional processes in community organization during different hydrological conditions. Maintenance of both local and regional scale processes are thus important in the preservation of alpha and beta diversity of floodplain fish metacommunities, which should be considered by environmental management.
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Affiliation(s)
- Tibor Erős
- HUN-REN Balaton Limnological Research Institute, Tihany, Hungary
- National Laboratory for Water Science and Water Security, HUN-REN Balaton Limnological Research Institute, Tihany, Hungary
| | - Andrea Funk
- Christian Doppler Laboratory for Meta Ecosystem Dynamics in Riverine Landscapes, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Didier Pont
- Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Thomas Hein
- Christian Doppler Laboratory for Meta Ecosystem Dynamics in Riverine Landscapes, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Paul Meulenbroek
- Christian Doppler Laboratory for Meta Ecosystem Dynamics in Riverine Landscapes, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Bálint Preiszner
- HUN-REN Balaton Limnological Research Institute, Tihany, Hungary
- National Laboratory for Water Science and Water Security, HUN-REN Balaton Limnological Research Institute, Tihany, Hungary
| | | | - István Czeglédi
- HUN-REN Balaton Limnological Research Institute, Tihany, Hungary
- National Laboratory for Water Science and Water Security, HUN-REN Balaton Limnological Research Institute, Tihany, Hungary
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2
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Hamer AJ, Czeglédi I, Gál B, Sály P, Szalóky Z, Preiszner B, Erős T. Hydrology is a major influence on amphibian abundance in a large European floodplain. Freshw Biol 2023; 68:1303-1318. [PMID: 38516301 PMCID: PMC10952816 DOI: 10.1111/fwb.14104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 04/16/2023] [Accepted: 04/26/2023] [Indexed: 03/23/2024]
Abstract
River-floodplain ecosystems play a crucial role in connecting landscape patches through hydrological connectivity, but they are among the most threatened ecosystems. Floodplains provide important habitat for amphibians by connecting aquatic and terrestrial habitats. Modifications to floodplain hydrology can impact amphibian communities, yet few studies have examined amphibian metacommunities in floodplain wetlands.In this study, we assessed patterns in amphibian breeding abundance in one of the largest floodplains of the Danube River, Hungary, relative to hydrological connectivity and multi-scale variables at 30 waterbody sites. Our aim was to determine whether these patterns aligned with the pond-permanence gradient hypothesis, where breeding amphibian abundance is predicted to be highest in ephemeral ponds without large predatory fish. We used Bayesian hierarchical modelling to estimate multi-species abundance from repeated survey (count) data collected over one breeding season.We detected the eggs and larvae of four amphibian species. The best model of abundance included covariates describing two principal component axes associated with waterbody hydrology and landscape composition within a 500-m radius of a site. There was a positive relationship between mean community abundance at a site and hydrological disconnection from the main river channel; however, the common toad (Bufo bufo) was associated with hydrologically connected waterbodies. There was a positive relationship between mean community abundance and a high proportion of forest cover and low cover of agricultural land within a 500-m radius around a site, although this relationship was clear for only two species. There was no support for models containing the number of large predatory fish species detected at a site.Although our results showed that amphibian abundance declined with hydrological connectivity, based on model selection we could not ascribe this relationship to an increased number of large predatory fish species detected in waterbodies close to the main river channel. Differences in life history and habitat requirements are likely to have explained interspecific responses to hydrological connectivity. Our results underscore the importance of addressing amphibian abundance at multiple spatial scales in floodplain wetlands, as landscape composition partly explained patterns in abundance.Application of multi-species abundance modelling allowed us to investigate environmental relationships for common and infrequently detected species. Habitat restoration programmes in floodplains should provide waterbodies disconnected from main river channels as potential amphibian breeding sites and protect or restore forest as terrestrial habitat.
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Affiliation(s)
- Andrew J. Hamer
- Balaton Limnological Research InstituteEötvös Loránd Research Network (ELKH)TihanyHungary
- Institute of Aquatic Ecology, Centre for Ecological ResearchBudapestHungary
| | - István Czeglédi
- Balaton Limnological Research InstituteEötvös Loránd Research Network (ELKH)TihanyHungary
- National Laboratory for Water Science and Water SecurityBalaton Limnological Research InstituteTihanyHungary
| | - Blanka Gál
- Balaton Limnological Research InstituteEötvös Loránd Research Network (ELKH)TihanyHungary
- National Laboratory for Water Science and Water SecurityBalaton Limnological Research InstituteTihanyHungary
| | - Péter Sály
- Institute of Aquatic Ecology, Centre for Ecological ResearchBudapestHungary
- National Laboratory for Water Science and Water SecurityWater Ecological InstituteBudapestHungary
| | - Zoltán Szalóky
- Institute of Aquatic Ecology, Centre for Ecological ResearchBudapestHungary
- National Laboratory for Water Science and Water SecurityWater Ecological InstituteBudapestHungary
| | - Bálint Preiszner
- Balaton Limnological Research InstituteEötvös Loránd Research Network (ELKH)TihanyHungary
- National Laboratory for Water Science and Water SecurityBalaton Limnological Research InstituteTihanyHungary
| | - Tibor Erős
- Balaton Limnological Research InstituteEötvös Loránd Research Network (ELKH)TihanyHungary
- National Laboratory for Water Science and Water SecurityBalaton Limnological Research InstituteTihanyHungary
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3
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Somogyi D, Erős T, Mozsár A, Czeglédi I, Szeles J, Tóth R, Zulkipli N, Antal L, Nyeste K. Intraguild predation as a potential explanation for the population decline of the threatened native fish, the European mudminnow (Umbra krameri Walbaum, 1792) by the invasive Amur sleeper (Perccottus glenii Dybowski, 1877). NB 2023. [DOI: 10.3897/neobiota.83.95680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
Biotic interactions exerted by invasive species have a strong effect on ecosystems. Intraguild predation may contribute to the decline in the distribution, abundance and population size of native species and may facilitate the spread of non-native taxa. In this study, we investigated the feeding ecology of the invasive fish Amur sleeper (Perccottus glenii Dybowski, 1877) in a lowland watercourse, where it co-exists with the threatened native fish European mudminnow (Umbra krameri Walbaum, 1792). We used two sampling protocols that differed in the frequency of sampling time (e.g. monthly samplings and samplings in 10-day intervals) to provide evidence of predation, an interaction that may lead to the decline of mudminnow populations with the spread of the Amur sleeper. Aquatic macroinvertebrates comprised a major part of the diet for both sampling intervals. However, finer temporal resolution revealed the importance of fish, especially mudminnow juveniles, as a periodically available food source in the Amur sleeper’s diet. A high degree of dietary overlap was found between the different size groups of the Amur sleeper, but larger specimens tended to feed on a relatively higher proportion of fish. Our results suggested that temporal resolution of stomach content analyses may largely determine inferences on the importance of predation on juvenile mudminnow. Overall, we found that intraguild predation could contribute to the decline of European mudminnow populations, which underscores the importance of effective control measures to prevent the further spread of the invasive Amur sleeper.
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Carvajal-Quintero J, Comte L, Giam X, Olden JD, Brose U, Erős T, Filipe AF, Fortin MJ, Irving K, Jacquet C, Larsen S, Ruhi A, Sharma S, Villalobos F, Tedesco PA. Scale of population synchrony confirms macroecological estimates of minimum viable range size. Ecol Lett 2023; 26:291-301. [PMID: 36468276 DOI: 10.1111/ele.14152] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 11/14/2022] [Accepted: 11/14/2022] [Indexed: 12/11/2022]
Abstract
Global ecosystems are facing a deepening biodiversity crisis, necessitating robust approaches to quantifying species extinction risk. The lower limit of the macroecological relationship between species range and body size has long been hypothesized as an estimate of the relationship between the minimum viable range size (MVRS) needed for species persistence and the organismal traits that affect space and resource requirements. Here, we perform the first explicit test of this assumption by confronting the MVRS predicted by the range-body size relationship with an independent estimate based on the scale of synchrony in abundance among spatially separated populations of riverine fish. We provide clear evidence of a positive relationship between the scale of synchrony and species body size, and strong support for the MVRS set by the lower limit of the range-body size macroecological relationship. This MVRS may help prioritize first evaluations for unassessed or data-deficient taxa in global conservation assessments.
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Affiliation(s)
- Juan Carvajal-Quintero
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena- Leipzig, Leipzig, Germany.,Leipzig University, Leipzig, Germany
| | - Lise Comte
- School of Biological Sciences, Illinois State University, Normal, Illinois, USA
| | - Xingli Giam
- Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, Tennessee, USA
| | - Julian D Olden
- School of Aquatic and Fishery Sciences, University of Washington, Seattle, Washington, USA
| | - Ulrich Brose
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena- Leipzig, Leipzig, Germany.,Institute of Biodiversity, Friedrich-Schiller-University Jena, Jena, Germany
| | - Tibor Erős
- Balaton Limnological Research Institute, ELKH, Tihany, Hungary
| | - Ana Filipa Filipe
- Forest Research Centre, School of Agriculture, University of Lisbon, Lisbon, Portugal.,Associate Laboratory TERRA, Lisbon, Portugal
| | - Marie-Josée Fortin
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada
| | - Katie Irving
- Department of Biology, Southern California Coastal Water Research Project, Costa Mesa, California, USA
| | - Claire Jacquet
- Department of Aquatic Ecology, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland.,Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland
| | - Stefano Larsen
- Fondazione Edmund Mach, Research and Innovation Centre, San Michele all'Adige, Italy.,Department of Civil, Environmental and Mechanical Engineering, University of Trento, Trento, Italy
| | - Albert Ruhi
- Department of Environmental Science, Policy, and Management, University of California, Berkeley, California, USA
| | - Sapna Sharma
- Department of Biology, York University, Toronto, Ontario, Canada
| | - Fabricio Villalobos
- Laboratorio de Macroecología Evolutiva, Red de Biología Evolutiva, Instituto de Ecología, Veracruz, Mexico
| | - Pablo A Tedesco
- UMR EDB, IRD 253, CNRS 5174, UPS, Université Toulouse 3 Paul Sabatier, Toulouse, France
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5
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Pont D, Meulenbroek P, Bammer V, Dejean T, Erős T, Jean P, Lenhardt M, Nagel C, Pekarik L, Schabuss M, Stoeckle BC, Stoica E, Zornig H, Weigand A, Valentini A. Quantitative monitoring of diverse fish communities on a large scale combining eDNA metabarcoding and qPCR. Mol Ecol Resour 2023; 23:396-409. [PMID: 36151931 DOI: 10.1111/1755-0998.13715] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 07/21/2022] [Accepted: 09/15/2022] [Indexed: 01/04/2023]
Abstract
Environmental DNA (eDNA) metabarcoding is an effective method for studying fish communities but allows only an estimation of relative species abundance (density/biomass). Here, we combine metabarcoding with an estimation of the total abundance of eDNA amplified by our universal marker (teleo) using a quantitative (q)PCR approach to infer the absolute abundance of fish species. We carried out a 2850-km eDNA survey within the Danube catchment using a spatial integrative sampling protocol coupled with traditional electrofishing for fish biomass and density estimation. Total fish eDNA concentrations and total fish abundance were highly correlated. The correlation between eDNA concentrations per taxon and absolute specific abundance was of comparable strength when all sites were pooled and remained significant when the sites were considered separately. Furthermore, a nonlinear mixed model showed that species richness was underestimated when the amount of teleo-DNA extracted from a sample was below a threshold of 0.65 × 106 copies of eDNA. This result, combined with the decrease in teleo-DNA concentration by several orders of magnitude with river size, highlights the need to increase sampling effort in large rivers. Our results provide a comprehensive description of longitudinal changes in fish communities and underline our combined metabarcoding/qPCR approach for biomonitoring and bioassessment surveys when a rough estimate of absolute species abundance is sufficient.
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Affiliation(s)
- Didier Pont
- Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Paul Meulenbroek
- Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, Vienna, Austria.,WasserCluster Lunz -Biologische Station GmbH, Lunz am See, Austria
| | - Vincenz Bammer
- Bundesamt für Wasserwirtschaft, Institut für Gewässerökologie und Fischereiwirtschaft, Abteilung Gewässerökologie, Mondsee, Austria
| | | | - Tibor Erős
- Balaton Limnological Research Institute, Eötvös Lor'and Research Network (ELKH), Tihany, Hungary
| | | | - Mirjana Lenhardt
- Institute for Multidisciplinary Research, Institute for Biological Research "Siniša Stanković," National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Christoffer Nagel
- Technical University of Munich, Chair of Aquatic Systems Biology, Freising-Weihenstephan, Germany
| | - Ladislav Pekarik
- Plant Science and Biodiversity Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | | | - Bernhard C Stoeckle
- Technical University of Munich, Chair of Aquatic Systems Biology, Freising-Weihenstephan, Germany
| | - Elena Stoica
- National Institute for Marine Research and Development "Grigore Antipa,", Constanţa, Romania
| | - Horst Zornig
- PRO FISCH OG Ecological Consultants, Vienna, Austria
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Poikane S, Kelly MG, Várbíró G, Borics G, Erős T, Hellsten S, Kolada A, Lukács BA, Lyche Solheim A, Pahissa López J, Willby NJ, Wolfram G, Phillips G. Estimating nutrient thresholds for eutrophication management: Novel insights from understudied lake types. Sci Total Environ 2022; 827:154242. [PMID: 35245557 DOI: 10.1016/j.scitotenv.2022.154242] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 02/10/2022] [Accepted: 02/26/2022] [Indexed: 06/14/2023]
Abstract
Nutrient targets based on pressure-response models are essential for defining ambitions and managing eutrophication. However, the scale of biogeographical variation in these pressure-response relationships is poorly understood, which may hinder eutrophication management in regions where lake ecology is less intensively studied. In this study, we derive ecology-based nutrient targets for five major ecoregions of Europe: Northern, Central-Baltic, Alpine, Mediterranean and Eastern Continental. As a first step, we developed regressions between nutrient concentrations and ecological quality ratios (EQR) based on phytoplankton and macrophyte communities. Significant relationships were established for 13 major lake types; in most cases, these relationships were stronger for phosphorus than for nitrogen, and stronger for phytoplankton than for macrophytes. Using these regressions, we estimated the total phosphorus (TP) and total nitrogen (TN) concentrations at which lakes of different types are likely to achieve good ecological status. However, in the very shallow lakes of the Eastern Continental region, relations between nutrient and biological communities were weak or non-significant. This can be attributed to high nutrient concentrations (in the asymptotic zone of phosphorus-phytoplankton models) suggesting other factors (light, grazing) limit primary production. However, we also show that fish stocking is a major pressure on Eastern Continental lakes, negatively affecting ecological status: lakes with low fish stocking show low chlorophyll-a concentrations and good ecological status despite high nutrient levels, while the lakes with high fish stocking show high chlorophyll-a and low ecological status. This study highlights the need to better understand lakes in biogeographic regions that have been, for historical reasons, less studied. This, in turn, helps reveal factors that challenge the dominant paradigms of lake assessment and management.
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Affiliation(s)
- Sandra Poikane
- European Commission, Joint Research Centre (JRC), I-21027 Ispra, Italy.
| | - Martyn G Kelly
- Bowburn Consultancy, 11 Monteigne Drive, Bowburn, Durham DH6 5QB, UK; Department of Geography, Nottingham University, Nottingham NG7 2RD, UK
| | - Gábor Várbíró
- Department of Tisza Research, Institute of Aquatic Ecology, Centre for Ecological Research, Bem tér 18/c, H-4026 Debrecen, Hungary
| | - Gábor Borics
- Department of Tisza Research, Institute of Aquatic Ecology, Centre for Ecological Research, Bem tér 18/c, H-4026 Debrecen, Hungary
| | - Tibor Erős
- Balaton Limnological Research Institute, ELKH, Klebelsberg K. u. 3, H-8237 Tihany, Hungary
| | - Seppo Hellsten
- Freshwater Centre, Finnish Environment Institute, Latokartanonkaari 11, FI-00790 Helsinki, Finland
| | - Agnieszka Kolada
- Institute of Environmental Protection-National Research Institute, Krucza 5/11D, 00-548 Warsaw, Poland
| | - Balázs András Lukács
- Department of Tisza Research, Institute of Aquatic Ecology, Centre for Ecological Research, Bem tér 18/c, H-4026 Debrecen, Hungary
| | - Anne Lyche Solheim
- Norwegian Institute of Water Research, NIVA, Gaustadalleen 21, 0349 Oslo, Norway
| | - José Pahissa López
- Tragsatec, Gerencia de Gestión y Planificación Hídrica, Julián Camarillo 6B, 28037 Madrid, Spain
| | - Nigel J Willby
- School of Biological and Environmental Sciences, University of Stirling, Stirling FK9 4LA, UK
| | - Georg Wolfram
- DWS Hydro-Ökologie, Zentagasse 47, 1050 Vienna, Austria
| | - Geoff Phillips
- School of Biological and Environmental Sciences, University of Stirling, Stirling FK9 4LA, UK
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7
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Takács P, Bánó B, Czeglédi I, Erős T, Ferincz Á, Gál B, Bánó-Kern B, Kovács B, Nagy AA, Nyeste K, Lente V, Preiszner B, Sipos S, Staszny Á, Vitál Z, Weiperth A, Csoma E. The mixed phylogenetic origin of northern pike (Esox lucius Linnaeus 1758) populations in the Middle Danubian drainage. BMC ZOOL 2022; 7:28. [PMID: 37170181 PMCID: PMC10127386 DOI: 10.1186/s40850-022-00129-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 05/12/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Pikes, members of genus Esox, are widespread freshwater predators of the northern hemisphere, and important sport fish also. From the Carpathian basin only one species, the northern pike (E. lucius) is noted. At the same time the pike stocks living in this area show high level of phenotypic variance (e.g. various body pattern) and its growth varies highly both among and within populations. These features usually explained by the environmental diversity of the area. Whereas we think that genetic reasons -e.g. the appearance of other/new pike species in the area- may also be responsible for these observed features. Since as no detailed information have been published from the pike populations of this area, so far; we conducted phylogenetic and morphological assay on 88 pike specimens, collected from 49 Middle Danubian sampling sites. RESULTS Our phylogenetic surveys showed that the northern pike appear in the study area solely, but all the three of its major lineages (Northern, Circumpolar, Southern) were indicated. Only six specimens represent the Northern lineage, collected from the western part of the study area. The Circumpolar and Southern lineages were common in the Carpathian basin, but the Southern lineage showed higher levels of haplotype diversity than the Circumpolar clade. Which indicates that only the Southern lineage is native in the area, while the other two groups could have appeared in the Middle Danubian system either spontaneously or by human introduction. Moreover, the different clades appeared in the same populations, suggesting the opportunity of inter-lineage hybridisation. From the studied morphologicalal features, the number of scales on the lateral line and the head length showed significant differences among the lineages. At the same time the body pattern of the studied individuals seems to be rather influenced by the ontogenic changes than phylogeny. CONCLUSIONS The high phenotypic variability of Middle Danubian northern pike populations may be due that all of its three major clades appeared and came in secondary contact in the area. In the within watershed spread of the non-native lineages the human stocking/transfer may play a considerable role.
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Affiliation(s)
- Péter Takács
- Balaton Limnological Research Institute, Klebelsberg Kuno str. 3, Tihany, 8237, Hungary.
| | - Bálint Bánó
- Balaton Limnological Research Institute, Klebelsberg Kuno str. 3, Tihany, 8237, Hungary
- Department of Molecular Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly str. 1, Gödöllő, 2103, Hungary
| | - István Czeglédi
- Balaton Limnological Research Institute, Klebelsberg Kuno str. 3, Tihany, 8237, Hungary
| | - Tibor Erős
- Balaton Limnological Research Institute, Klebelsberg Kuno str. 3, Tihany, 8237, Hungary
| | - Árpád Ferincz
- Department of Freshwater Fish Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly str. 1, Gödöllő, 2103, Hungary
| | - Blanka Gál
- Balaton Limnological Research Institute, Klebelsberg Kuno str. 3, Tihany, 8237, Hungary
| | - Bernadett Bánó-Kern
- Balaton Limnological Research Institute, Klebelsberg Kuno str. 3, Tihany, 8237, Hungary
| | - Balázs Kovács
- Department of Molecular Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly str. 1, Gödöllő, 2103, Hungary
| | - András Attila Nagy
- "MilvusGroup" Birdland Nature Protection Association, Crinului nr 22, 540343, Tîrgu Mureș, Romania
- Evolutionary Ecology Group, Hungarian Department of Biology and Ecology, Faculty of Biology and Geology, University Babeş-Bolyai, Strada Clinicilor 5-7, 400006, Cluj-Napoca-Napoca, Romania
| | - Krisztián Nyeste
- Department of Hydrobiology, Faculty of Science and Technology, University of Debrecen, Egyetem sqr. 1, Debrecen, 4032, Hungary
| | - Vera Lente
- Department of Freshwater Fish Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly str. 1, Gödöllő, 2103, Hungary
| | - Bálint Preiszner
- Balaton Limnological Research Institute, Klebelsberg Kuno str. 3, Tihany, 8237, Hungary
| | - Sándor Sipos
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, 21102, Novi Sad, Serbia
| | - Ádám Staszny
- Department of Freshwater Fish Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly str. 1, Gödöllő, 2103, Hungary
| | - Zoltán Vitál
- Research Center for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agricultural and Life Sciences, Anna-liget u. 35, Szarvas, 5540, Hungary
| | - András Weiperth
- Department of Freshwater Fish Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, Páter Károly str. 1, Gödöllő, 2103, Hungary
| | - Eszter Csoma
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen, 4032, Hungary
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8
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Cid N, Erős T, Heino J, Singer G, Jähnig SC, Cañedo‐Argüelles M, Bonada N, Sarremejane R, Mykrä H, Sandin L, Paloniemi R, Varumo L, Datry T. From meta-system theory to the sustainable management of rivers in the Anthropocene. Front Ecol Environ 2022; 20:49-57. [PMID: 35873359 PMCID: PMC9292669 DOI: 10.1002/fee.2417] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Regional-scale ecological processes, such as the spatial flows of material, energy, and organisms, are fundamental for maintaining biodiversity and ecosystem functioning in river networks. Yet these processes remain largely overlooked in most river management practices and underlying policies. Here, we propose adoption of a meta-system approach, where regional processes acting at different levels of ecological organization - populations, communities, and ecosystems - are integrated into conventional river conservation, restoration, and biomonitoring. We also describe a series of measurements and indicators that could be assimilated into the implementation of relevant biodiversity and environmental policies. Finally, we highlight the need for alternative management strategies that can guide practitioners toward applying recent advances in ecology to preserve and restore river ecosystems and the ecosystem services they provide, in the context of increasing alteration of river network connectivity worldwide.
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Affiliation(s)
- Núria Cid
- INRAEUR RiverLyCentre de Lyon‐VilleurbanneVilleurbanne CedexFrance
| | - Tibor Erős
- Balaton Limnological Research InstituteTihanyHungary
| | - Jani Heino
- Finnish Environment InstituteFreshwater CentreOuluFinland
| | - Gabriel Singer
- Department of EcologyUniversity of InnsbruckInnsbruckAustria
| | - Sonja C Jähnig
- Leibniz Institute of Freshwater Ecology and Inland FisheriesDepartment of Ecosystem ResearchBerlinGermany
- Geography DepartmentFaculty of Mathematics and Natural SciencesHumboldt‐Universität zu BerlinBerlinGermany
| | - Miguel Cañedo‐Argüelles
- Freshwater Ecology, Hydrology and Management Research GroupDepartament de Biologia EvolutivaEcologia i Ciències AmbientalsFacultat de BiologiaUniversitat de BarcelonaBarcelonaSpain
- Institut de Recerca de l'AiguaUniversitat de BarcelonaBarcelonaSpain
| | - Núria Bonada
- Freshwater Ecology, Hydrology and Management Research GroupDepartament de Biologia EvolutivaEcologia i Ciències AmbientalsFacultat de BiologiaUniversitat de BarcelonaBarcelonaSpain
- Institut de Recerca de la BiodiversitatUniversitat de BarcelonaBarcelonaSpain
| | | | - Heikki Mykrä
- Finnish Environment InstituteFreshwater CentreOuluFinland
| | | | - Riikka Paloniemi
- Finnish Environment InstituteEnvironmental Policy CentreHelsinkiFinland
| | - Liisa Varumo
- Finnish Environment InstituteEnvironmental Policy CentreHelsinkiFinland
| | - Thibault Datry
- INRAEUR RiverLyCentre de Lyon‐VilleurbanneVilleurbanne CedexFrance
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9
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Vári Á, Podschun SA, Erős T, Hein T, Pataki B, Iojă IC, Adamescu CM, Gerhardt A, Gruber T, Dedić A, Ćirić M, Gavrilović B, Báldi A. Freshwater systems and ecosystem services: Challenges and chances for cross-fertilization of disciplines. Ambio 2022; 51:135-151. [PMID: 33983559 PMCID: PMC8651970 DOI: 10.1007/s13280-021-01556-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/12/2021] [Accepted: 03/14/2021] [Indexed: 05/15/2023]
Abstract
Freshwater ecosystems are among the most threatened in the world, while providing numerous essential ecosystem services (ES) to humans. Despite their importance, research on freshwater ecosystem services is limited. Here, we examine how freshwater studies could help to advance ES research and vice versa. We summarize major knowledge gaps and suggest solutions focusing on science and policy in Europe. We found several features that are unique to freshwater ecosystems, but often disregarded in ES assessments. Insufficient transfer of knowledge towards stakeholders is also problematic. Knowledge transfer and implementation seems to be less effective towards South-east Europe. Focusing on the strengths of freshwater research regarding connectivity, across borders, involving multiple actors can help to improve ES research towards a more dynamic, landscape-level approach, which we believe can boost the implementation of the ES concept in freshwater policies. Bridging these gaps can contribute to achieve the ambitious targets of the EU's Green Deal.
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Affiliation(s)
- Ágnes Vári
- Lendület Ecosystem Services Research Group, Centre for Ecological Research, 2-4 Alkotmány utca, 2163 Vácrátót, Hungary
| | - Simone A. Podschun
- Department Ecohydrology, Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Justus-von-Liebig-Str. 7, 12489 Berlin, Germany
| | - Tibor Erős
- ELKH Balaton Limnological Research Institute, Klebelsberg K. u. 3, 8237 Tihany, Hungary
| | - Thomas Hein
- Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, Vienna, Gregor-Mendel-Straße 33, 1180 Vienna, Austria
- WasserCluster Lunz - Biologische Station, Dr. Carl-Kupelwieser-Prom. 5, 3293 Lunz/See, Austria
| | - Beáta Pataki
- Department of Civil Engineering, Faculty of Engineering, University of Debrecen, Ótemető u. 2-4, 4028 Debrecen, Hungary
| | - Ioan-Cristian Iojă
- Center for Environmental Research and Impact Studies, University of Bucharest, Bulevardul Nicolae Bălcescu nr. 1, Bucureşti, 030167 Romania
| | - Cristian Mihai Adamescu
- Research Center for Systems Ecology and Sustainability, University of Bucharest, 050095 Bucharest, Romania
| | - Almut Gerhardt
- Limco International GmbH, Wollmatinger Str. 22, 78467 Constance, Germany
| | - Tamás Gruber
- WWF Hungary, Álmos vezér útja 69/A, 1141 Budapest, Hungary
| | - Anita Dedić
- Biology Department, Faculty of Science and Education, University of Mostar, Rodoč bb, 88 000 Mostar, Bosnia and Herzegovina
| | - Miloš Ćirić
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
| | - Bojan Gavrilović
- Department of Physical Geography, Geographical Institute “Jovan Cvijić”, Serbian Academy of Sciences and Arts, Djure Jakšića 9, Belgrade, Serbia
| | - András Báldi
- Lendület Ecosystem Services Research Group, Centre for Ecological Research, 2-4 Alkotmány utca, 2163 Vácrátót, Hungary
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10
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Ritterbusch D, Blabolil P, Breine J, Erős T, Mehner T, Olin M, Peirson G, Volta P, Poikane S. European fish-based assessment reveals high diversity of systems for determining ecological status of lakes. Sci Total Environ 2022; 802:149620. [PMID: 34461474 DOI: 10.1016/j.scitotenv.2021.149620] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 08/05/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
Triggered by the adoption of the Water Framework Directive, a variety of fish-based systems were developed throughout Europe to assess the ecological status of lakes. This paper provides a comprehensive overview of all existing systems and summarizes sampling methods, fish community traits (metrics) and the relevant anthropogenic pressures assessed by them. Twenty-one European countries developed fish-based assessment systems. Three countries each developed two distinct systems to approach different ecoregions, either to use different data, or to assess different lake types leading to a total number of 24 systems. The most common approach for the setting of reference conditions, used in seventeen systems, was the utilisation of fish communities in comparably undisturbed natural lakes as reference. Eleven used expert judgment, nine historical data and eight modelled relationships. Fourteen systems combined at least two approaches. The most common fish sampling method was a standardized fishing procedure with multimesh-gillnets. Many countries applied combinations of fishing methods, e.g. non-standard gillnets, fyke nets and electrofishing. Altogether 177 metrics were used for index development and each system combined 2-13 metrics. The most common ones were total standardized catches of number and biomass, relative abundance of Perca fluviatilis, Rutilus rutilus, and Abramis brama, feeding preferences, sensitive species, and non-natives. The pressure-response-relationships for these metrics were supported with both correlations established during system development and scientific publications. However, the metrics and their combinations were highly diverse and no metric was applied universally. Our analysis reveals that most fish-based assessment systems address multiple pressures (eutrophication, hydromorphological alterations, fishery pressure and occurrence of non-natives), whilst few are pressure-specific, tackling only eutrophication or acidification. We argue that the value of fish-based systems for lakes lies in their capacity to capture the effect of many different pressures and their interactions which is lacking for most assessment systems based on other biota.
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Affiliation(s)
- David Ritterbusch
- Institute for Inland Fisheries, Im Königswald 2, D-14469 Potsdam, Germany.
| | - Petr Blabolil
- Biology Centre of the Czech Academy of Sciences, Na Sádkách 7, 37005 České Budějovice, Czech Republic.
| | - Jan Breine
- Research Institute for Nature and Forest (INBO), Dwersbos 28, B-1630 Linkebeek, Belgium.
| | - Tibor Erős
- Balaton Limnological Research Institute, Klebelsberg K. u. 3, H-8237 Tihany, Hungary.
| | - Thomas Mehner
- Leibniz Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, D-12587 Berlin, Germany.
| | - Mikko Olin
- Natural Resources Institute Finland, P. O. Box 2, FI-00791 Helsinki, Finland.
| | - Graeme Peirson
- Environment Agency, Research, Analysis and Evaluation, Air, Land and Water Team, Worcester Road, Kidderminster DY11 RA, United Kingdom.
| | - Pietro Volta
- CNR Water Research Institute (IRSA), L.go Tonolli 50, 28922 Verbania Pallanza, Italy.
| | - Sandra Poikane
- European Commission Joint Research Centre (JRC), Via Enrico Fermi 274, 21027 Ispra, VA, Italy.
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11
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Vilizzi L, Copp GH, Hill JE, Adamovich B, Aislabie L, Akin D, Al-Faisal AJ, Almeida D, Azmai MNA, Bakiu R, Bellati A, Bernier R, Bies JM, Bilge G, Branco P, Bui TD, Canning-Clode J, Cardoso Ramos HA, Castellanos-Galindo GA, Castro N, Chaichana R, Chainho P, Chan J, Cunico AM, Curd A, Dangchana P, Dashinov D, Davison PI, de Camargo MP, Dodd JA, Durland Donahou AL, Edsman L, Ekmekçi FG, Elphinstone-Davis J, Erős T, Evangelista C, Fenwick G, Ferincz Á, Ferreira T, Feunteun E, Filiz H, Forneck SC, Gajduchenko HS, Gama Monteiro J, Gestoso I, Giannetto D, Gilles AS, Gizzi F, Glamuzina B, Glamuzina L, Goldsmit J, Gollasch S, Goulletquer P, Grabowska J, Harmer R, Haubrock PJ, He D, Hean JW, Herczeg G, Howland KL, İlhan A, Interesova E, Jakubčinová K, Jelmert A, Johnsen SI, Kakareko T, Kanongdate K, Killi N, Kim JE, Kırankaya ŞG, Kňazovická D, Kopecký O, Kostov V, Koutsikos N, Kozic S, Kuljanishvili T, Kumar B, Kumar L, Kurita Y, Kurtul I, Lazzaro L, Lee L, Lehtiniemi M, Leonardi G, Leuven RSEW, Li S, Lipinskaya T, Liu F, Lloyd L, Lorenzoni M, Luna SA, Lyons TJ, Magellan K, Malmstrøm M, Marchini A, Marr SM, Masson G, Masson L, McKenzie CH, Memedemin D, Mendoza R, Minchin D, Miossec L, Moghaddas SD, Moshobane MC, Mumladze L, Naddafi R, Najafi-Majd E, Năstase A, Năvodaru I, Neal JW, Nienhuis S, Nimtim M, Nolan ET, Occhipinti-Ambrogi A, Ojaveer H, Olenin S, Olsson K, Onikura N, O'Shaughnessy K, Paganelli D, Parretti P, Patoka J, Pavia RTB, Pellitteri-Rosa D, Pelletier-Rousseau M, Peralta EM, Perdikaris C, Pietraszewski D, Piria M, Pitois S, Pompei L, Poulet N, Preda C, Puntila-Dodd R, Qashqaei AT, Radočaj T, Rahmani H, Raj S, Reeves D, Ristovska M, Rizevsky V, Robertson DR, Robertson P, Ruykys L, Saba AO, Santos JM, Sarı HM, Segurado P, Semenchenko V, Senanan W, Simard N, Simonović P, Skóra ME, Slovák Švolíková K, Smeti E, Šmídová T, Špelić I, Srėbalienė G, Stasolla G, Stebbing P, Števove B, Suresh VR, Szajbert B, Ta KAT, Tarkan AS, Tempesti J, Therriault TW, Tidbury HJ, Top-Karakuş N, Tricarico E, Troca DFA, Tsiamis K, Tuckett QM, Tutman P, Uyan U, Uzunova E, Vardakas L, Velle G, Verreycken H, Vintsek L, Wei H, Weiperth A, Weyl OLF, Winter ER, Włodarczyk R, Wood LE, Yang R, Yapıcı S, Yeo SSB, Yoğurtçuoğlu B, Yunnie ALE, Zhu Y, Zięba G, Žitňanová K, Clarke S. A global-scale screening of non-native aquatic organisms to identify potentially invasive species under current and future climate conditions. Sci Total Environ 2021; 788:147868. [PMID: 34134389 DOI: 10.1016/j.scitotenv.2021.147868] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/13/2021] [Accepted: 05/14/2021] [Indexed: 05/22/2023]
Abstract
The threat posed by invasive non-native species worldwide requires a global approach to identify which introduced species are likely to pose an elevated risk of impact to native species and ecosystems. To inform policy, stakeholders and management decisions on global threats to aquatic ecosystems, 195 assessors representing 120 risk assessment areas across all six inhabited continents screened 819 non-native species from 15 groups of aquatic organisms (freshwater, brackish, marine plants and animals) using the Aquatic Species Invasiveness Screening Kit. This multi-lingual decision-support tool for the risk screening of aquatic organisms provides assessors with risk scores for a species under current and future climate change conditions that, following a statistically based calibration, permits the accurate classification of species into high-, medium- and low-risk categories under current and predicted climate conditions. The 1730 screenings undertaken encompassed wide geographical areas (regions, political entities, parts thereof, water bodies, river basins, lake drainage basins, and marine regions), which permitted thresholds to be identified for almost all aquatic organismal groups screened as well as for tropical, temperate and continental climate classes, and for tropical and temperate marine ecoregions. In total, 33 species were identified as posing a 'very high risk' of being or becoming invasive, and the scores of several of these species under current climate increased under future climate conditions, primarily due to their wide thermal tolerances. The risk thresholds determined for taxonomic groups and climate zones provide a basis against which area-specific or climate-based calibrated thresholds may be interpreted. In turn, the risk rankings help decision-makers identify which species require an immediate 'rapid' management action (e.g. eradication, control) to avoid or mitigate adverse impacts, which require a full risk assessment, and which are to be restricted or banned with regard to importation and/or sale as ornamental or aquarium/fishery enhancement.
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Affiliation(s)
- Lorenzo Vilizzi
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland
| | - Gordon H Copp
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland; Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, Suffolk NR33 0HT, UK; Centre for Ecology, Environment and Sustainability, Bournemouth University, Poole, Dorset BH12 5BB, UK; School of the Environment, Trent University, Peterborough, Ontario K9L 0G2, Canada
| | - Jeffrey E Hill
- Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, University of Florida, Ruskin, FL 33570, USA
| | - Boris Adamovich
- Faculty of Biology, Belarusian State University, 220030 Minsk, Belarus
| | - Luke Aislabie
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, Suffolk NR33 0HT, UK
| | - Daniel Akin
- College of Science and Mathematics, Auburn University, Auburn, AL 36849, USA
| | - Abbas J Al-Faisal
- Marine Science Centre, University of Basrah, PO Box 49, Basrah, Iraq
| | - David Almeida
- Departamento de Ciencias Médicas Básicas, Facultad de Medicina, Universidad San Pablo CEU, 28003 Madrid, Spain
| | - M N Amal Azmai
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, 43400 Seri Kembangan, Selangor, Malaysia
| | - Rigers Bakiu
- Department of Aquaculture and Fisheries, Faculty of Agriculture and Environment, Agricultural University of Tirana, Tirana 1000, Albania; Albanian Center for Environmental Protection and Sustainable Development, Tirana 1000, Albania
| | - Adriana Bellati
- Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy
| | - Renée Bernier
- Fisheries and Oceans Canada, Gulf Fisheries Centre, Moncton, New Brunswick E1C 5K4, Canada
| | - Jason M Bies
- Department of Wildlife, Fisheries & Aquaculture, Mississippi State University, Mississippi State, MS 39762, USA
| | - Gökçen Bilge
- Department of Basic Sciences, Faculty of Fisheries, Muğla Sıtkı Koçman University, 48000 Menteşe, Muğla, Turkey
| | - Paulo Branco
- Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda 1349-017, Lisbon, Portugal
| | - Thuyet D Bui
- Faculty of Marine Science, Hanoi University of Natural Resources and Environment, 41A Phu Dien, Bac Tu Liem, Hanoi, Viet Nam
| | - João Canning-Clode
- MARE - Marine and Environmental Sciences Centre, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI), 9020-105 Funchal, Madeira, Portugal; Smithsonian Environmental Research Center, Edgewater, MD 21037, USA
| | - Henrique Anatole Cardoso Ramos
- Coordination of Sustainable Use of Fisheries Resources, Department of Species Conservation, Ministry of Environment, 70068-900 Brasilia, Brazil
| | - Gustavo A Castellanos-Galindo
- Leibniz Centre for Tropical Marine Research (ZMT), 28359 Bremen, Germany; Smithsonian Tropical Research Institute, Apartado 2072, Balboa, Panamá
| | - Nuno Castro
- MARE - Marine and Environmental Sciences Centre, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI), 9020-105 Funchal, Madeira, Portugal
| | - Ratcha Chaichana
- Department of Environmental Technology and Management, Faculty of Environment, Kasetsart University, Bangkok 10900, Thailand
| | - Paula Chainho
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences, University of Lisbon, 1749-016 Lisboa, Portugal; Department of Animal Biology, Faculty of Sciences, University of Lisbon, 1749-016 Lisboa, Portugal; Polytechnic Institute of Setúbal, 2910-761 Setúbal, Portugal
| | - Joleen Chan
- Department of Biological Sciences, National University of Singapore, 117558, Singapore
| | - Almir M Cunico
- Laboratory of Ecology, Fisheries and Ichthyology, Biodiversity Department - Palotina Sector, Federal University of Paraná (UFPR), Curitiba 80060-000, Brazil
| | - Amelia Curd
- Laboratory of Coastal Benthic Ecology, French Research Institute for Exploitation of the Sea (IFREMER), 29280 Plouzané, France
| | - Punyanuch Dangchana
- Division of Research Policy and Plan, National Research Council of Thailand, Bangkok 10900, Thailand
| | - Dimitriy Dashinov
- Department of General and Applied Hydrobiology, Faculty of Biology, Sofia University, 1164 g.k. Lozenets, Sofia, Bulgaria
| | - Phil I Davison
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, Suffolk NR33 0HT, UK
| | - Mariele P de Camargo
- Laboratory of Ecology, Fisheries and Ichthyology, Biodiversity Department - Palotina Sector, Federal University of Paraná (UFPR), Curitiba 80060-000, Brazil
| | - Jennifer A Dodd
- Animal and Plant Sciences Group, Edinburgh Napier University, Sighthill, Edinburgh EH11 4BN, UK
| | - Allison L Durland Donahou
- Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, University of Florida, Ruskin, FL 33570, USA; Florida Southern College, Lakeland, FL 33801, USA
| | - Lennart Edsman
- Department of Aquatic Resources, Institute of Freshwater Research, Swedish University of Agricultural Sciences, SE-750 07 Drottningholm, Sweden
| | - F Güler Ekmekçi
- Hydrobiology section, Department of Biology, Faculty of Science, Hacettepe University, Çankaya-Ankara 06800, Turkey
| | | | - Tibor Erős
- Centre for Ecological Research, Balaton Limnological Institute, Tihany 8237, Hungary
| | - Charlotte Evangelista
- Centre for Ecological and Evolutionary Synthesis, University of Oslo, NO-0316 Oslo, Norway
| | - Gemma Fenwick
- Lancaster Environment Centre, Lancaster University, Lancaster, Lancashire LA1 4YW, UK
| | - Árpád Ferincz
- Institute for Natural Resources Conservation, Department of Aquaculture, Faculty of Agriculture and Environmental Sciences, Szent István University, Gödöllő 2100, Hungary
| | - Teresa Ferreira
- Department of Natural Resources, Environment and Landscape, School of Agriculture, University of Lisbon, 1349-017 Lisbon, Portugal
| | - Eric Feunteun
- Muséum National d'Histoire Naturelle, Laboratoire Biologie des Organismes et Ecosystèmes Aquatiques, BOREA (MNHN, CNRS, Sorbonne Université, Université de Caen, IRD, Université de Guadeloupe Antilles), Station Marine de Dinard, CRESCO, 35800 Dinard, France
| | - Halit Filiz
- Department of Basic Sciences, Faculty of Fisheries, Muğla Sıtkı Koçman University, 48000 Menteşe, Muğla, Turkey
| | - Sandra C Forneck
- Laboratory of Ecology, Fisheries and Ichthyology, Biodiversity Department - Palotina Sector, Federal University of Paraná (UFPR), Curitiba 80060-000, Brazil
| | - Helen S Gajduchenko
- Laboratory of Ichthyology, Scientific and Practical Center for Bioresources, National Academy of Sciences of Belarus, Minsk 220072, Belarus
| | - João Gama Monteiro
- MARE - Marine and Environmental Sciences Centre, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI), 9020-105 Funchal, Madeira, Portugal
| | - Ignacio Gestoso
- MARE - Marine and Environmental Sciences Centre, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI), 9020-105 Funchal, Madeira, Portugal; Smithsonian Environmental Research Center, Edgewater, MD 21037, USA
| | - Daniela Giannetto
- Department of Biology, Faculty of Science, Muğla Sıtkı Koçman University, 48000 Menteşe, Muğla, Turkey
| | - Allan S Gilles
- Department of Biological Sciences, College of Science, Research Center for the Natural and Applied Sciences, Graduate School, University of Santo Tomas, Manila, 1008, Metro Manila, Philippines
| | - Francesca Gizzi
- MARE - Marine and Environmental Sciences Centre, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI), 9020-105 Funchal, Madeira, Portugal
| | - Branko Glamuzina
- Department of Applied Ecology, University of Dubrovnik, 20000 Dubrovnik, Croatia
| | - Luka Glamuzina
- Department of Applied Ecology, University of Dubrovnik, 20000 Dubrovnik, Croatia
| | - Jesica Goldsmit
- Fisheries and Oceans Canada, Maurice Lamontagne Institute, Mont-Joli, Quebec G5H 3Z4, Canada; Arctic and Aquatic Research Division, Freshwater Institute, Fisheries and Oceans Canada, Winnipeg, Quebec MB R3T 2N6, Canada
| | | | - Philippe Goulletquer
- Scientific Direction, French Research Institute for Exploitation of the Sea (IFREMER), 44980 Nantes, France
| | - Joanna Grabowska
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland
| | - Rogan Harmer
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, Suffolk NR33 0HT, UK
| | - Phillip J Haubrock
- Senckenberg Research Institute and Natural History Museum Frankfurt, Department of River Ecology and Conservation, 63571 Gelnhausen, Germany; Nature and Environment Management Operators s.r.l., 50121 Florence, Italy; Department of Biology, University of Florence, 50121 Florence, Italy
| | - Dekui He
- The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430071, China
| | - Jeffrey W Hean
- DST/NRF Research Chair in Inland Fisheries and Freshwater Ecology, South African Institute for Aquatic Biodiversity, Grahamstown 6140, South Africa; GroundTruth, Water, Wetlands and Environmental Engineering, Hilton, KwaZulu-Natal 3245, South Africa
| | - Gábor Herczeg
- Behavioural Ecology Group, Department of Systematic Zoology and Ecology, ELTE Eötvös Loránd University, H-1117 Budapest, Hungary
| | - Kimberly L Howland
- Arctic and Aquatic Research Division, Freshwater Institute, Fisheries and Oceans Canada, Winnipeg, Quebec MB R3T 2N6, Canada
| | - Ali İlhan
- Faculty of Fisheries, Ege University, 35100 Bornova, Izmir, Turkey
| | - Elena Interesova
- Tomsk State University, Tomsk 634050, Russia; Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia; Novosibirsk branch of Russian Federal Research Institute of Fisheries and Oceanography, Novosibirsk 630090, Russia
| | - Katarína Jakubčinová
- Department of Ecology, Faculty of Natural Sciences, Comenius University, 841 04 Bratislava, Slovakia
| | - Anders Jelmert
- Institute of Marine Research, Flødevigen Research Station, NO-7485 His, Norway
| | - Stein I Johnsen
- Norwegian Institute for Nature Research, NO-7485 Trondheim, Norway
| | - Tomasz Kakareko
- Department of Ecology and Biogeography, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, 87-100 Toruń, Poland
| | - Kamalaporn Kanongdate
- Faculty of Environment and Resource Studies, Mahidol University, Salaya 73170, Thailand
| | - Nurçin Killi
- Department of Basic Sciences, Faculty of Fisheries, Muğla Sıtkı Koçman University, 48000 Menteşe, Muğla, Turkey
| | - Jeong-Eun Kim
- College of Biological Sciences and Biotechnology, Chungnam National University, Daejeon 305-764, Republic of Korea
| | | | - Dominika Kňazovická
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, 165 00 Praha, Czechia
| | - Oldřich Kopecký
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, 165 00 Praha, Czechia
| | - Vasil Kostov
- Department of Fisheries, Institute of Animal Science, Ss Cyril and Methodius University, Skopje 1000, Macedonia
| | - Nicholas Koutsikos
- Institute of Marine Biological Resources & Inland Waters, Hellenic Centre for Marine Research, Anavissos, 19013, Attica, Greece
| | - Sebastian Kozic
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland
| | - Tatia Kuljanishvili
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, 165 00 Praha, Czechia
| | - Biju Kumar
- Department of Aquatic Biology & Fisheries, University of Kerala, Thiruvananthapuram, Kerala 695034, India
| | - Lohith Kumar
- REF Division, ICAR-Central Inland Fisheries Research Institute, Kolkata, West Bengal 700120, India
| | - Yoshihisa Kurita
- Fishery Research Laboratory, Kyushu University, Fukutsu, Fukuoka 811-3304, Japan
| | - Irmak Kurtul
- Faculty of Fisheries, Ege University, 35100 Bornova, Izmir, Turkey
| | - Lorenzo Lazzaro
- Department of Biology, University of Florence, 50121 Florence, Italy
| | - Laura Lee
- Department of Evolution, Ecology and Behaviour, Faculty of Health and Life Sciences, University of Liverpool, Liverpool L69 7TX, England, United Kingdom
| | - Maiju Lehtiniemi
- Marine Research Centre, Finnish Environment Institute, 00790 Helsinki, Finland
| | | | - Rob S E W Leuven
- Department of Animal Ecology and Physiology, Institute for Water and Wetland Research, Radboud University & Netherlands Centre of Expertise on Exotic Species, 6500 GL Nijmegen, the Netherlands
| | - Shan Li
- Natural History Research Center, Shanghai Natural History Museum, Branch of Shanghai Science & Technology Museum, Shanghai 200041, China
| | - Tatsiana Lipinskaya
- Laboratory of Hydrobiology, Scientific and Practical Center for Bioresources, National Academy of Sciences of Belarus, Minsk 220072, Belarus
| | - Fei Liu
- Aquatic Science Institute, Tibet Academy of Agriculture and Animal Husbandry Science, Lhasa 850009, China
| | - Lance Lloyd
- Lloyd Environmental Pty Ltd, Somers, Victoria 3927, Australia; School of Health and Life Sciences, Federation University Australia, Ballarat, Victoria 3350, Australia
| | - Massimo Lorenzoni
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, 06123 Perugia, Italy
| | - Sergio Alberto Luna
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Nuevo León 66455, Mexico
| | - Timothy J Lyons
- Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, University of Florida, Ruskin, FL 33570, USA; New Mexico Biopark Society, Albuquerque, NM 87102, USA
| | - Kit Magellan
- South African Institute for Aquatic Biodiversity, Grahamstown 6140, South Africa; University of Battambang, 02360 Battambang, Cambodia
| | - Martin Malmstrøm
- Norwegian Scientific Committee for Food and Environment (VKM), NO-0213 Oslo, Norway
| | - Agnese Marchini
- Department of Earth and Environmental Sciences, University of Pavia, 27100 Pavia, Italy
| | - Sean M Marr
- DST/NRF Research Chair in Inland Fisheries and Freshwater Ecology, South African Institute for Aquatic Biodiversity, Grahamstown 6140, South Africa
| | - Gérard Masson
- Laboratoire interdisciplinaire des environnements continentaux, Centre national de la recherche scientifique, Université de Lorraine, 57000 Metz, France
| | - Laurence Masson
- Freshwater Fish Ecology Laboratory, Ecosystem Science and Management Program, University of Northern British Columbia, Prince George, British Columbia V2N 4Z9, Canada
| | - Cynthia H McKenzie
- Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada, St. John's, Newfoundland and Labrador A1A 5J7, Canada
| | - Daniyar Memedemin
- Faculty of Natural and Agricultural Sciences, Ovidius University of Constanta, Constanta 900527, Romania
| | - Roberto Mendoza
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Nuevo León 66455, Mexico
| | - Dan Minchin
- Marine Organism Investigations, Marina Village, Ballina, Killaloe, Clare V94 767X, Ireland; Marine Research Institute, Klaipėda University, 92294 Klaipėda, Lithuania
| | - Laurence Miossec
- Scientific Direction, French Research Institute for Exploitation of the Sea (IFREMER), 44980 Nantes, France
| | - Seyed Daryoush Moghaddas
- Department of Biodiversity and Ecosystems Management, Environmental Sciences Research Institute, Shahid Beheshti University, 1983963113 Tehran, Iran
| | - Moleseng C Moshobane
- South African National Biodiversity Institute, Biological Invasions Directorate, Pretoria 0001, South Africa; Department of Biology, Sefako Makgatho Health Sciences University, Gauteng 0208, South Africa; Young Water Professionals, South African Chapter, Limpopo 1685, South Africa
| | - Levan Mumladze
- Institute of Zoology, Ilia State University, Tbilisi 0162, Georgia
| | - Rahmat Naddafi
- Swedish University of Agricultural Sciences, Department of Aquatic Resources, Division of Coastal Research, SE-453 30 Oregrund, Sweden
| | - Elnaz Najafi-Majd
- Department of Biology, Faculty of Sciences, Ege University, 35040 Izmir, Turkey
| | - Aurel Năstase
- Department of Biodiversity Conservation and Sustainable Use of Natural Resources, Danube Delta National Institute for Research and Development, Tulcea 820112, Romania
| | - Ion Năvodaru
- Department of Biodiversity Conservation and Sustainable Use of Natural Resources, Danube Delta National Institute for Research and Development, Tulcea 820112, Romania
| | - J Wesley Neal
- Department of Wildlife, Fisheries & Aquaculture, Mississippi State University, Mississippi State, MS 39762, USA
| | - Sarah Nienhuis
- Ontario Ministry of Natural Resources and Forestry, Peterborough, Ontario K9J 8M5, Canada
| | - Matura Nimtim
- Department of Environmental Technology and Management, Faculty of Environment, Kasetsart University, Bangkok 10900, Thailand
| | - Emma T Nolan
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Talbot Campus, Poole BH12 5BB, UK
| | - Anna Occhipinti-Ambrogi
- Department of Ecological and Biological Sciences, University of Tuscia, 01100 Viterbo, Italy
| | - Henn Ojaveer
- University of Tartu, 80012 Pärnu, Estonia; National Institute of Aquatic Resources, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Sergej Olenin
- Marine Research Institute, Klaipėda University, 92294 Klaipėda, Lithuania
| | - Karin Olsson
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, Suffolk NR33 0HT, UK; School of Zoology, Tel Aviv University, Tel Aviv 6997801, Israel; The Inter-University Institute for Marine Sciences in Eilat, Coral Beach, Eilat 8810302, Israel
| | - Norio Onikura
- Fishery Research Laboratory, Kyushu University, Fukutsu, Fukuoka 811-3304, Japan
| | - Kathryn O'Shaughnessy
- Texas Parks and Wildlife Department, Coastal Fisheries, 4200 Smith School Rd., Austin, TX 78744, USA
| | | | - Paola Parretti
- MARE - Marine and Environmental Sciences Centre, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (ARDITI), 9020-105 Funchal, Madeira, Portugal; CIBIO, Research Center in Biodiversity and Genetic Resources, InBIO Associate Laboratory and Faculty of Sciences and Technologies, University of the Azores, 9500-321 Ponta Delgada, Portugal
| | - Jiří Patoka
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, 165 00 Praha, Czechia
| | - Richard Thomas B Pavia
- Department of Biological Sciences, College of Science, Research Center for the Natural and Applied Sciences, Graduate School, University of Santo Tomas, Manila, 1008, Metro Manila, Philippines
| | | | | | - Elfritzson M Peralta
- Department of Biological Sciences, College of Science, Research Center for the Natural and Applied Sciences, Graduate School, University of Santo Tomas, Manila, 1008, Metro Manila, Philippines
| | - Costas Perdikaris
- Department of Fisheries, Regional Unit of Thesprotia, Epirus, 46 100, Igoumenitsa, Greece
| | - Dariusz Pietraszewski
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland
| | - Marina Piria
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland; Department of Fisheries, Apiculture, Wildlife Management and Special Zoology, University of Zagreb Faculty of Agriculture, 10000 Zagreb, Croatia.
| | - Sophie Pitois
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, Suffolk NR33 0HT, UK
| | - Laura Pompei
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, 06123 Perugia, Italy
| | - Nicolas Poulet
- Pôle écohydraulique OFB-IMFT-P, French Agency for Biodiversity, 31400 Toulouse, France
| | - Cristina Preda
- Faculty of Natural and Agricultural Sciences, Ovidius University of Constanta, Constanta 900527, Romania
| | - Riikka Puntila-Dodd
- Marine Research Centre, Finnish Environment Institute, 00790 Helsinki, Finland
| | | | - Tena Radočaj
- Department of Fisheries, Apiculture, Wildlife Management and Special Zoology, University of Zagreb Faculty of Agriculture, 10000 Zagreb, Croatia
| | - Hossein Rahmani
- Sari Agricultural Sciences and Natural Resources University, Sari, 4816118771, Mazandaran, Iran
| | - Smrithy Raj
- Department of Aquatic Biology & Fisheries, University of Kerala, Thiruvananthapuram, Kerala 695034, India; National Centre for Biological Sciences, Bangalore 560065, India
| | - David Reeves
- National Fish and Wildlife Foundation, Baton Rouge, LA 70808, USA
| | - Milica Ristovska
- Institute of Biology, Faculty of Natural Sciences and Mathematics, Ss Cyril and Methodius University, 1000 Skopje, Macedonia
| | - Viktor Rizevsky
- Laboratory of Ichthyology, Scientific and Practical Center for Bioresources, National Academy of Sciences of Belarus, Minsk 220072, Belarus
| | - D Ross Robertson
- Smithsonian Tropical Research Institute, Apartado 2072, Balboa, Panamá
| | - Peter Robertson
- Modelling, Evidence and Policy Group, School of Natural and Environmental Resources, Newcastle University, Newcastle NE1 7RU, UK
| | - Laura Ruykys
- Nature and Biodiversity Conservation Agency, Vietnam Environment Administration, Ministry of Natural Resources and Environment, 10 Ton That Thuyet, Nam Tu Liem District, Hanoi, Viet Nam; Flora and Fauna Division, Department of Environment and Natural Resources, Palmerston, Northern Territory 0828, Australia
| | - Abdulwakil O Saba
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, 43400 Seri Kembangan, Selangor, Malaysia; School of Agriculture, Lagos State University, Epe Campus, 106101 Epe, Lagos State, Nigeria
| | - José M Santos
- Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda 1349-017, Lisbon, Portugal
| | - Hasan M Sarı
- Faculty of Fisheries, Ege University, 35100 Bornova, Izmir, Turkey
| | - Pedro Segurado
- Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda 1349-017, Lisbon, Portugal
| | - Vitaliy Semenchenko
- Laboratory of Hydrobiology, Scientific and Practical Center for Bioresources, National Academy of Sciences of Belarus, Minsk 220072, Belarus
| | - Wansuk Senanan
- Department of Aquatic Science, Faculty of Science, Burapha University, Chon Buri 20130, Thailand
| | - Nathalie Simard
- Fisheries and Oceans Canada, Maurice Lamontagne Institute, Mont-Joli, Quebec G5H 3Z4, Canada
| | - Predrag Simonović
- Faculty of Biology & Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade 11000, Serbia
| | - Michał E Skóra
- University of Gdańsk, Faculty of Oceanography and Geography, Institute of Oceanography, Professor Krzysztof Skóra Hel Marine Station, 84-150 Hel, Poland
| | - Kristína Slovák Švolíková
- Department of Ecology, Faculty of Natural Sciences, Comenius University, 841 04 Bratislava, Slovakia
| | - Evangelia Smeti
- Institute of Marine Biological Resources & Inland Waters, Hellenic Centre for Marine Research, Anavissos, 19013, Attica, Greece
| | - Tereza Šmídová
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, 165 00 Praha, Czechia
| | - Ivan Špelić
- Department of Fisheries, Apiculture, Wildlife Management and Special Zoology, University of Zagreb Faculty of Agriculture, 10000 Zagreb, Croatia
| | - Greta Srėbalienė
- Marine Research Institute, Klaipėda University, 92294 Klaipėda, Lithuania
| | | | - Paul Stebbing
- Centre for Environment, Fisheries and Aquaculture Science, Weymouth, Dorset DT4 8UB, UK; APEM Ltd, A17 Embankment, Business Park, Heaton Mersey, Manchester, Cheshire SK4 3GN, UK
| | - Barbora Števove
- Department of Ecology, Faculty of Natural Sciences, Comenius University, 841 04 Bratislava, Slovakia
| | - Vettath R Suresh
- Division of Mariculture, Central Marine Fisheries Research Institute, Cochin, Kerala 682018, India
| | - Bettina Szajbert
- Behavioural Ecology Group, Department of Systematic Zoology and Ecology, ELTE Eötvös Loránd University, H-1117 Budapest, Hungary
| | - Kieu Anh T Ta
- Nature and Biodiversity Conservation Agency, Vietnam Environment Administration, Ministry of Natural Resources and Environment, 10 Ton That Thuyet, Nam Tu Liem District, Hanoi, Viet Nam
| | - Ali Serhan Tarkan
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland; Department of Basic Sciences, Faculty of Fisheries, Muğla Sıtkı Koçman University, 48000 Menteşe, Muğla, Turkey
| | | | - Thomas W Therriault
- Pacific Biological Station, Fisheries and Oceans Canada, Nanaimo, British Columbia V9T 6N7, Canada
| | - Hannah J Tidbury
- Centre for Environment, Fisheries and Aquaculture Science, Weymouth, Dorset DT4 8UB, UK
| | - Nildeniz Top-Karakuş
- Department of Basic Sciences, Faculty of Fisheries, Muğla Sıtkı Koçman University, 48000 Menteşe, Muğla, Turkey
| | - Elena Tricarico
- Department of Biology, University of Florence, 50121 Florence, Italy
| | - Débora F A Troca
- Institute of Oceanography, Federal University of Rio Grande, 96203-900 Rio Grande, Brazil
| | - Konstantinos Tsiamis
- Institute of Oceanography, Hellenic Centre for Marine Research, Attica, Anavyssos 19013, Greece
| | - Quenton M Tuckett
- Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest Resources and Conservation, University of Florida, Ruskin, FL 33570, USA
| | - Pero Tutman
- Laboratory for Ichthyology and Coastal Fisheries, Institute of Oceanography and Fisheries, 21000 Split, Croatia
| | - Umut Uyan
- Skretting Turkey, Güllük Milas, 48670, Muğla, Turkey
| | - Eliza Uzunova
- Department of General and Applied Hydrobiology, Faculty of Biology, Sofia University, 1164 g.k. Lozenets, Sofia, Bulgaria
| | - Leonidas Vardakas
- Institute of Marine Biological Resources & Inland Waters, Hellenic Centre for Marine Research, Anavissos, 19013, Attica, Greece
| | - Gaute Velle
- Norwegian Research Centre, 5007 Bergen, Norway; Department of Biological Sciences, University of Bergen, 5007 Bergen, Norway
| | - Hugo Verreycken
- Research Institute for Nature and Forest (INBO), B-1630 Linkebeek, Belgium
| | - Lizaveta Vintsek
- Institute of Botany, Faculty of Biology, Jagiellonian University, 30-387 Kraków, Poland
| | - Hui Wei
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510380, China; Key Laboratory of Recreational fisheries Research, Ministry of Agriculture and Rural Affairs, Guangzhou 510380, China
| | - András Weiperth
- Institute for Natural Resources Conservation, Department of Aquaculture, Faculty of Agriculture and Environmental Sciences, Szent István University, Gödöllő 2100, Hungary
| | - Olaf L F Weyl
- Centre for Invasion Biology, South African Institute for Aquatic Biodiversity, Makhanda 6139, South Africa; DST/NRF Research Chair in Inland Fisheries and Freshwater Ecology, South African Institute for Aquatic Biodiversity, Grahamstown 6140, South Africa
| | - Emily R Winter
- Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Talbot Campus, Poole BH12 5BB, UK
| | - Radosław Włodarczyk
- Department of Biodiversity Studies and Bioeducation, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland
| | - Louisa E Wood
- Centre for Environment, Fisheries and Aquaculture Science, Weymouth, Dorset DT4 8UB, UK
| | - Ruibin Yang
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Sercan Yapıcı
- Department of Basic Sciences, Faculty of Fisheries, Muğla Sıtkı Koçman University, 48000 Menteşe, Muğla, Turkey
| | - Shayne S B Yeo
- Department of Biological Sciences, National University of Singapore, 117558, Singapore
| | - Baran Yoğurtçuoğlu
- Hydrobiology section, Department of Biology, Faculty of Science, Hacettepe University, Çankaya-Ankara 06800, Turkey
| | | | - Yunjie Zhu
- Aquaculture Technology Promotion Station of Nantong, Nantong, China
| | - Grzegorz Zięba
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland
| | - Kristína Žitňanová
- Department of Ecology, Faculty of Natural Sciences, Comenius University, 841 04 Bratislava, Slovakia
| | - Stacey Clarke
- Centre for Environment, Fisheries and Aquaculture Science, Lowestoft, Suffolk NR33 0HT, UK
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12
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Mozsár A, Árva D, Józsa V, Györe K, Kajári B, Czeglédi I, Erős T, Weiperth A, Specziár A. Only one can remain? Environmental and spatial factors influencing habitat partitioning among invasive and native crayfishes in the Pannonian Ecoregion (Hungary). Sci Total Environ 2021; 770:145240. [PMID: 33513498 DOI: 10.1016/j.scitotenv.2021.145240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 06/12/2023]
Abstract
Biological invasions have increasingly threatened indigenous species, influence metacommunity organisation and consequently, global biodiversity. World-wide expansion of non-indigenous crayfish (NICS) is associated with dramatic changes in species poor indigenous crayfish (ICS) assemblages challenging conservation planning. We analysed long-term changes of crayfish occurrences from the pre-invasion state, through the first appearance of NICS, to their intensive spread in Hungarian waters. Further, we analysed present-day crayfish metacommunity patterns for co-occurrences and influence of spatial and environmental factors. Historic data revealed a marked pre-invasion decline in indigenous noble crayfish Astacus astacus and stone crayfish Austropotamobius torrentium populations, but not in the narrow-clawed crayfish Pontastacus leptodactylus. Historic data provided no direct evidence for the impact of NICS on ICS, rather it supported that NICS often entered areas where ICS had been extinct or were not present at all. Crayfish species extremely rarely co-occurred which could indicate their strong competition and be related to utilization of empty sites by NICS. Crayfish metacommunities were predominantly spatially structured indicating the primary influence of ongoing invasion. Crayfish species also exhibited different environmental preferences mainly along the altitude and temperature gradients. We conclude that the invasion is still in the expanding phase and without an effective conservational program the future of ICS is doubtful in Hungary. Conservation policy should focus on the preservation and reintroduction of the stone and noble crayfishes in highland refugees. Expansion of NICS should be prevented in refugee areas by utilizing possibilities provided by natural and artificial barriers, and education and strict ban should be simultaneously applied to prevent further illegal releases by aquarists.
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Affiliation(s)
- Attila Mozsár
- Research Institute for Fisheries and Aquaculture, National Agricultural Research and Innovation Centre, Anna-liget str. 35., H-5540 Szarvas, Hungary.
| | - Diána Árva
- Research Institute for Fisheries and Aquaculture, National Agricultural Research and Innovation Centre, Anna-liget str. 35., H-5540 Szarvas, Hungary
| | - Vilmos Józsa
- Research Institute for Fisheries and Aquaculture, National Agricultural Research and Innovation Centre, Anna-liget str. 35., H-5540 Szarvas, Hungary
| | - Károly Györe
- Györe and Co, Vágóhíd str. 91., H-5540 Szarvas, Hungary
| | - Balázs Kajári
- Research Institute of Irrigation and Water Management, National Agricultural Research and Innovation Centre, Anna-liget str. 35., H-5540 Szarvas, Hungary
| | - István Czeglédi
- Balaton Limnological Institute, MTA Centre for Ecological Research, Klebelsberg K. str. 3., H-8237 Tihany, Hungary
| | - Tibor Erős
- Balaton Limnological Institute, MTA Centre for Ecological Research, Klebelsberg K. str. 3., H-8237 Tihany, Hungary
| | - András Weiperth
- Department of Aquaculture, Faculty of Agriculture and Environmental Sciences, Institute for Natural Resources Conservation, Szent István University, Páter Károly str. 1., H-2100 Gödöllő, Hungary; F6 Association for Sustainability, Budapest, Lónyay str. 15., H-1093 Budapest, Hungary
| | - András Specziár
- Balaton Limnological Institute, MTA Centre for Ecological Research, Klebelsberg K. str. 3., H-8237 Tihany, Hungary
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Larsen S, Comte L, Filipa Filipe A, Fortin MJ, Jacquet C, Ryser R, Tedesco PA, Brose U, Erős T, Giam X, Irving K, Ruhi A, Sharma S, Olden JD. The geography of metapopulation synchrony in dendritic river networks. Ecol Lett 2021; 24:791-801. [PMID: 33619868 PMCID: PMC8049041 DOI: 10.1111/ele.13699] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/30/2020] [Accepted: 01/07/2021] [Indexed: 02/07/2023]
Abstract
Dendritic habitats, such as river ecosystems, promote the persistence of species by favouring spatial asynchronous dynamics among branches. Yet, our understanding of how network topology influences metapopulation synchrony in these ecosystems remains limited. Here, we introduce the concept of fluvial synchrogram to formulate and test expectations regarding the geography of metapopulation synchrony across watersheds. By combining theoretical simulations and an extensive fish population time‐series dataset across Europe, we provide evidence that fish metapopulations can be buffered against synchronous dynamics as a direct consequence of network connectivity and branching complexity. Synchrony was higher between populations connected by direct water flow and decayed faster with distance over the Euclidean than the watercourse dimension. Likewise, synchrony decayed faster with distance in headwater than mainstem populations of the same basin. As network topology and flow directionality generate fundamental spatial patterns of synchrony in fish metapopulations, empirical synchrograms can aid knowledge advancement and inform conservation strategies in complex habitats.
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Affiliation(s)
- Stefano Larsen
- Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach, via E. Mach 1, San Michele all'Adige, 38010, Italy.,Department of Civil Environmental and Mechanical Engineering, University of Trento, Trento, Italy
| | - Lise Comte
- School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA, 98105, USA.,School of Biological Sciences, Illinois State University, Normal, IL 61790, USA
| | - Ana Filipa Filipe
- CIBIO/InBio, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Vairão, Portugal.,Instituto Superior de Agronomia, Universidade de Lisboa, Lisboa, Portugal
| | - Marie-Josée Fortin
- Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, M5S 3B2, Canada
| | - Claire Jacquet
- Department of Aquatic Ecology, Swiss Federal Institute of Aquatic Science and Technology, Eawag, Dübendorf, Switzerland.,Complex Systems Lab, INRAE - Centre Clermont-Auvergne-Rhône-Alpes, 9 avenue Blaise Pascal, Aubière,, 63170, France.,Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zürich, Switzerland
| | - Remo Ryser
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, 04103, Germany.,Institute of Biodiversity, Friedrich-Schiller-University Jena, Jena, 07743, Germany
| | - Pablo A Tedesco
- UMR EDB, CNRS 5174, UPS, Université Paul Sabatier, IRD 253, Toulouse, France
| | - Ulrich Brose
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, 04103, Germany.,Institute of Biodiversity, Friedrich-Schiller-University Jena, Jena, 07743, Germany
| | - Tibor Erős
- MTA Centre for Ecological Research, Balaton Limnological Institute, Klebelsberg K. u. 3, Tihany, 8237, Hungary
| | - Xingli Giam
- School of Biological Sciences, Illinois State University, Normal, IL 61790, USA
| | - Katie Irving
- Biology Department, Southern California Coastal Water Research Project, Costa Mesa, CA, 92626, USA.,Department of Environmental Science, Policy, and Management, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Albert Ruhi
- Department of Environmental Science, Policy, and Management, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Sapna Sharma
- Department of Biology, York University, 4700 Keele Street, Toronto, ON, M3J 1P3, Canada
| | - Julian D Olden
- School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA, 98105, USA
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14
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Erős T, Czeglédi I, Tóth R, Schmera D. Multiple stressor effects on alpha, beta and zeta diversity of riverine fish. Sci Total Environ 2020; 748:141407. [PMID: 32818892 DOI: 10.1016/j.scitotenv.2020.141407] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/20/2020] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
We examined the effects of regional scale land use and local scale environmental and biotic stressors on alpha, beta and zeta diversities of native fish communities in wadeable streams and non-wadeable rivers in the Danube basin, Hungary. Relationships among land use and local scale environmental and biotic stressors were weak both in streams and rivers, suggesting that these stressors act relatively independently. Alpha diversity decreased strongly with increasing local scale environmental stressor intensity in rivers. On the contrary, its response to stressors was more obscure in streams, where the best-fit statistical model indicated the importance of the interaction between land use, local scale environmental and biotic stressors, while the secondly ranked model highlighted the negative impact of local scale environmental stressors. Analysis of variance using distance matrices provided evidence that stressors alone and in interactions explained compositional differences of pairs of study sites (beta diversity). Considering the degree of overall degradation, both local (alpha) and among-site (beta and zeta) diversity indices responded to increasing stressor intensity, generally negatively. Riverine fish communities showed higher degrees of similarity (lower beta and higher zeta) than stream fish communities. They also showed increasing similarity (i.e. homogenization) with increasing overall stressor intensity, unlike stream fish communities, which showed no relationship with overall stressor intensity. Our results suggest that the relationships between land use and local scale environmental and biotic stressors can be complex and so do their effects on biodiversity. While stressor specific indices can provide information on the role of specific stressors in some cases, the examination of overall stressor effects is needed to assess realistically the effects of anthropogenic disturbances on native fish diversity. Diversity indices that quantify among-site changes in species composition, such as measures of beta and zeta diversity, can be fruitful for better understanding the role of multiple stressors in structuring ecological communities.
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Affiliation(s)
- Tibor Erős
- Centre for Ecological Research, Balaton Limnological Institute, Klebelsberg K. u. 3, H-8237 Tihany, Hungary; Centre for Ecological Research, GINOP Sustainable Ecosystems Group, Klebelsberg K. u. 3, H-8237 Tihany, Hungary.
| | - István Czeglédi
- Centre for Ecological Research, Balaton Limnological Institute, Klebelsberg K. u. 3, H-8237 Tihany, Hungary
| | - Rita Tóth
- University of Veterinary Medicine, Institute of Biology, Rottenbiller u. 50, H-1077 Budapest, Hungary
| | - Dénes Schmera
- Centre for Ecological Research, Balaton Limnological Institute, Klebelsberg K. u. 3, H-8237 Tihany, Hungary; Centre for Ecological Research, GINOP Sustainable Ecosystems Group, Klebelsberg K. u. 3, H-8237 Tihany, Hungary
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15
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Preiszner B, Czeglédi I, Boros G, Liker A, Kern B, Erős T. Scavenging behaviour and size-dependent carcass consumption of the black bullhead (Ameiurus melas). J Fish Biol 2020; 97:1113-1119. [PMID: 32743806 DOI: 10.1111/jfb.14482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 07/28/2020] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
This study examined the size-dependent scavenging behaviour of black bullheads Ameiurus melas under laboratory conditions, using common bleak Alburnus alburnus and pumpkinseed Lepomis gibbosus carcasses. Video camera observations showed that the activity of A. melas was higher at night, but substantial daytime activity was also recorded. Larger A. melas were more active than their smaller conspecifics, especially at night. All size classes exhibited a well-defined sequence of consuming different parts of the carcasses independent of size, but larger individuals tended to consume carcasses more efficiently. Carcasses of the softer-bodied A. alburnus were consumed more readily than those of the bonier L. gibbosus, independent of size. This scavenging behaviour of A. melas might facilitate the invasion success of the species.
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Affiliation(s)
- Bálint Preiszner
- Balaton Limnological Institute, MTA Centre for Ecological Research, Tihany, Hungary
| | - István Czeglédi
- Balaton Limnological Institute, MTA Centre for Ecological Research, Tihany, Hungary
| | - Gergely Boros
- Balaton Limnological Institute, MTA Centre for Ecological Research, Tihany, Hungary
| | - András Liker
- MTA-PE Evolutionary Ecology Research Group, Department of Limnology, University of Pannonia, Veszprém, Hungary
| | - Bernadett Kern
- Balaton Limnological Institute, MTA Centre for Ecological Research, Tihany, Hungary
| | - Tibor Erős
- Balaton Limnological Institute, MTA Centre for Ecological Research, Tihany, Hungary
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16
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Erős T, Bányai Z. Sparing and sharing land for maintaining the multifunctionality of large floodplain rivers. Sci Total Environ 2020; 728:138441. [PMID: 32361357 DOI: 10.1016/j.scitotenv.2020.138441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 03/27/2020] [Accepted: 04/02/2020] [Indexed: 06/11/2023]
Abstract
Large floodplain rivers (LFRs) are among the most threatened ecosystems on Earth and their utilization is expected to grow. Therefore, the need to develop more effective spatial prioritization tools to maintain their multifunctionality becomes increasingly important. We present a novel approach to land use design and conservation planning of LFRs and demonstrate its applicability using a case study for the Danube River, Central-Europe. Specifically, we use indicators of habitat naturalness and complexity to define four main land use functions for LFRs: (1) relatively intact areas with high habitat complexity, which are of high priority for conservation (C), (2) degraded and simplified areas, which are not suited for conservation, but for human utilization (HU), (3) relatively natural areas with low habitat complexity, which are suited both for conservation and for sustainable use of goods and services (LS), (4) degraded areas with relatively high habitat complexity potential, which should be used for rehabilitation (R). While C and HU spare land primarily for conservation and for human utilization, respectively, categories LS and R share land both for biodiversity conservation and for human use and well-being. Results of the case study show that the different land use functions did not clearly separate spatially along the evaluated segment, but distributed relatively equally. Area weighted indices highlighted the importance of large floodplains, while non-weighted indices indicated the importance of many smaller segments with narrow floodplain riparian zone, which can still be important for conservation or rehabilitation purposes. Our multiscale analysis revealed how land use categorizations depend on index use, index weightings and spatial resolution of land use function maps, which should be considered by management. The suggested methodology provides a transparent framework to any stakeholder groups on how to plan out management actions in the context of land conservation and ecosystem services delivery of LFRs.
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Affiliation(s)
- Tibor Erős
- Danube Research Institute, Centre for Ecological Research, Karolina út 29., H-1113 Budapest, Hungary; Balaton Limnological Institute, Centre for Ecological Research, Klebelsberg Kuno u. 3., H-8237 Tihany, Hungary.
| | - Zsombor Bányai
- Danube Research Institute, Centre for Ecological Research, Karolina út 29., H-1113 Budapest, Hungary
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Czeglédi I, Kern B, Tóth R, Seress G, Erős T. Impacts of Urbanization on Stream Fish Assemblages: The Role of the Species Pool and the Local Environment. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.00137] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abstract
Abstract
Purpose of Review
We synthesize recent methodological and conceptual advances in the field of riverscape ecology, emphasizing areas of synergy with current research in landscape ecology.
Recent Findings
Recent advances in riverscape ecology highlight the need for spatially explicit examinations of how network structure influences ecological pattern and process, instead of the simple linear (upstream-downstream) view. Developments in GIS, remote sensing, and computer technologies already offer powerful tools for the application of patch- and gradient-based models for characterizing abiotic and biotic heterogeneity across a range of spatial and temporal scales. Along with graph-based analyses and spatial statistical stream network models (i.e., geostatistical modelling), these approaches offer improved capabilities for quantifying spatial and temporal heterogeneity and connectivity relationships, thereby allowing for rigorous and high-resolution analyses of pattern, process, and scale relationships.
Summary
Spatially explicit network approaches are able to quantify and predict biogeochemical, hydromorphological, and ecological patterns and processes more precisely than models based on longitudinal or lateral riverine gradients alone. Currently, local habitat characteristics appear to be more important than spatial effects in determining population and community dynamics, but this conclusion may change with direct quantification of the movement of materials, energy, and organisms along channels and across ecosystem boundaries—a key to improving riverscape ecology. Coupling spatially explicit riverscape models with optimization approaches will improve land protection and water management efforts, and help to resolve the land sharing vs. land sparing debate.
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Affiliation(s)
- Tibor Erős
- MTA Centre for Ecological Research; Balaton Limnological Institute; Tihany Hungary
- MTA Centre for Ecological Research; Danube Research Institute; Budapest Hungary
- MTA Centre for Ecological Research; GINOP Sustainable Ecosystems Group; Tihany Hungary
| | | | - István Czeglédi
- MTA Centre for Ecological Research; Balaton Limnological Institute; Tihany Hungary
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Affiliation(s)
- T. Erős
- Balaton Limnological Institute, MTA Centre for Ecological Research, Klebelsberg K. u. 3., H-8237 Tihany, Hungary
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Czeglédi I, Sály P, Takács P, Dolezsai A, Vitál Z, Nagy AS, Erős T. Do diel variations in stream fish assemblages depend on spatial positioning of the sampling sites and seasons? ACTA ZOOL ACAD SCI H 2016. [DOI: 10.17109/azh.62.2.175.2016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Bakonyi G, Peták E, Erős T, Sály P. Some morphological characteristics of the water scorpion Nepa cinerea (Heteroptera: Nepomorpha) are associated with habitat type. ACTA ZOOL ACAD SCI H 2016. [DOI: 10.17109/azh.62.4.369.2016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Crook DA, Lowe WH, Allendorf FW, Erős T, Finn DS, Gillanders BM, Hadwen WL, Harrod C, Hermoso V, Jennings S, Kilada RW, Nagelkerken I, Hansen MM, Page TJ, Riginos C, Fry B, Hughes JM. Human effects on ecological connectivity in aquatic ecosystems: Integrating scientific approaches to support management and mitigation. Sci Total Environ 2015; 534:52-64. [PMID: 25917446 DOI: 10.1016/j.scitotenv.2015.04.034] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 03/30/2015] [Accepted: 04/10/2015] [Indexed: 06/04/2023]
Abstract
Understanding the drivers and implications of anthropogenic disturbance of ecological connectivity is a key concern for the conservation of biodiversity and ecosystem processes. Here, we review human activities that affect the movements and dispersal of aquatic organisms, including damming of rivers, river regulation, habitat loss and alteration, human-assisted dispersal of organisms and climate change. Using a series of case studies, we show that the insight needed to understand the nature and implications of connectivity, and to underpin conservation and management, is best achieved via data synthesis from multiple analytical approaches. We identify four key knowledge requirements for progressing our understanding of the effects of anthropogenic impacts on ecological connectivity: autecology; population structure; movement characteristics; and environmental tolerance/phenotypic plasticity. Structuring empirical research around these four broad data requirements, and using this information to parameterise appropriate models and develop management approaches, will allow for mitigation of the effects of anthropogenic disturbance on ecological connectivity in aquatic ecosystems.
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Affiliation(s)
- David A Crook
- Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, Northern Territory 0909, Australia.
| | - Winsor H Lowe
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA
| | | | - Tibor Erős
- Balaton Limnological Institute, Centre for Ecological Research, Hungarian Academy of Sciences, Tihany, Klebelsberg, K.u. 3., H-8237, Hungary
| | - Debra S Finn
- Department of Integrative Biology, Oregon State University, Corvallis, OR 97331, USA; Departamento de Recursos Hídricos y Ciencias Ambientales, Universidad de Cuenca, Cuenca, Ecuador
| | - Bronwyn M Gillanders
- Southern Seas Ecology Laboratories, School of Biological Sciences and The Environment Institute, DX 650 418, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Wade L Hadwen
- Australian Rivers Institute, Griffith University, Nathan, QLD 4111, Australia
| | - Chris Harrod
- Instituto de Ciencias Naturales Alexander Von Humboldt, Universidad de Antofagasta, Avenida Angamos, 601 Antofagasta, Chile
| | - Virgilio Hermoso
- Australian Rivers Institute, Griffith University, Nathan, QLD 4111, Australia
| | - Simon Jennings
- Centre for Environment, Fisheries and Aquaculture Science (CEFAS), Lowestoft Laboratory, Lowestoft NR33 0HT, UK; School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK
| | - Raouf W Kilada
- Biology Department, University of New Brunswick (Saint John), Canada
| | - Ivan Nagelkerken
- Southern Seas Ecology Laboratories, School of Biological Sciences and The Environment Institute, DX 650 418, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Michael M Hansen
- Department of Bioscience, Aarhus University, Ny Munkegade, Bldg. 1540, DK-8000 Aarhus C, Denmark
| | - Timothy J Page
- Australian Rivers Institute, Griffith University, Nathan, QLD 4111, Australia
| | - Cynthia Riginos
- School of Biological Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Brian Fry
- Australian Rivers Institute, Griffith University, Nathan, QLD 4111, Australia
| | - Jane M Hughes
- Australian Rivers Institute, Griffith University, Nathan, QLD 4111, Australia
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Mihók B, Kovács E, Balázs B, Pataki G, Ambrus A, Bartha D, Czirák Z, Csányi S, Csépányi P, Csőszi M, Dudás G, Egri C, Erős T, Gőri S, Halmos G, Kopek A, Margóczi K, Miklay G, Milon L, Podmaniczky L, Sárvári J, Schmidt A, Sipos K, Siposs V, Standovár T, Szigetvári C, Szemethy L, Tóth B, Tóth L, Tóth P, Török K, Török P, Vadász C, Varga I, Sutherland WJ, Báldi A. Bridging the research-practice gap: Conservation research priorities in a Central and Eastern European country. J Nat Conserv 2015. [DOI: 10.1016/j.jnc.2015.09.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Takács P, Erős T, Specziár A, Sály P, Vitál Z, Ferincz Á, Molnár T, Szabolcsi Z, Bíró P, Csoma E. Population Genetic Patterns of Threatened European Mudminnow (Umbra krameri Walbaum, 1792) in a Fragmented Landscape: Implications for Conservation Management. PLoS One 2015; 10:e0138640. [PMID: 26393510 PMCID: PMC4578892 DOI: 10.1371/journal.pone.0138640] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 08/27/2015] [Indexed: 11/18/2022] Open
Abstract
The European mudminnow (Umbra krameri) is a Middle Danubian endemic fish species, which is characterised by isolated populations living mainly in artificial habitats in the centre of its range, in the Carpathian Basin. For their long term preservation, reliable information is needed about the structure of stocks and the level of isolation. The recent distribution pattern, and the population genetic structure within and among regions were investigated to designate the Evolutionary Significant, Conservation and Management Units (ESUs, CUs, MUs) and to explore the conservation biological value of the shrinking populations. In total, eight microsatellite loci were studied in 404 specimens originating from eight regions. The results revealed a pronounced population structure, where strictly limited gene flow was detected among regions, as well as various strengths of connections within regions. Following the results of hierarchical structure analyses, two ESUs were supposed in the Carpathian Basin, corresponding to the Danube and Tisza catchments. Our results recommend designating the borders of CUs in an 80-90km range and 16 clusters should be set up as MUs for the 33 investigated populations. How these genetic findings can be used to better allocate conservation resources for the long term maintenance of the metapopulation structure of this threathened endemic fish is discussed.
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Affiliation(s)
- Péter Takács
- Balaton Limnological Institute, Centre for Ecological Research, MTA, Tihany, Hungary
- * E-mail:
| | - Tibor Erős
- Balaton Limnological Institute, Centre for Ecological Research, MTA, Tihany, Hungary
| | - András Specziár
- Balaton Limnological Institute, Centre for Ecological Research, MTA, Tihany, Hungary
| | - Péter Sály
- Balaton Limnological Institute, Centre for Ecological Research, MTA, Tihany, Hungary
| | - Zoltán Vitál
- Balaton Limnological Institute, Centre for Ecological Research, MTA, Tihany, Hungary
| | - Árpád Ferincz
- Department of Aquaculture, Szent István University, Gödöllő, Hungary
| | - Tamás Molnár
- Department of Nature Conservation, Kaposvár University, Kaposvár, Hungary
| | - Zoltán Szabolcsi
- Institute of Forensic Medicine, Network of Forensic Science Institutes, Budapest, Hungary
| | - Péter Bíró
- Balaton Limnological Institute, Centre for Ecological Research, MTA, Tihany, Hungary
| | - Eszter Csoma
- Department of Medical Microbiology, University of Debrecen, Debrecen, Hungary
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Schmera D, Erős T, Heino J. Habitat filtering determines spatial variation of macroinvertebrate community traits in northern headwater streams. COMMUNITY ECOL 2013. [DOI: 10.1556/comec.14.2013.1.9] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Specziár A, György AI, Erős T. Within-lake distribution patterns of fish assemblages: the relative roles of spatial, temporal and random environmental factors in assessing fish assemblages using gillnets in a large and shallow temperate lake. J Fish Biol 2013; 82:840-855. [PMID: 23464547 DOI: 10.1111/jfb.12029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2012] [Accepted: 11/14/2012] [Indexed: 06/01/2023]
Abstract
In this study, the relative role of spatio-temporal factors and associated environmental variables (water transparency and temperature) were quantified in relation to gillnet samples of fishes in a large and shallow lake (Lake Balaton, Hungary). Most of the variance (56·1%) in the relative abundance data (%) was related to the vertical segregation of fishes. This gradient substantially affected the catch per unit effort (CPUE) by number of the dominant species, the surface-oriented bleak Alburnus alburnus and the benthic common bream Abramis brama. It also influenced total CPUE, mean fish mass and species richness and diversity. At the lake level, horizontal habitat heterogeneity (i.e. littoral v. offshore) accounted for only 8·3% of the total variance in relative abundance data, but was important in structuring the CPUE of the ruffe Gymnocephalus cernua and the pikeperch Sander lucioperca. The longitudinal environmental gradient (i.e. lake basin), year and season of sampling, water transparency and temperature had significant effects on relative abundance only at the habitat level, but were also important components of variability of CPUE in some species at the lake level. As sampling schemes need to consider the main gradients in fish assemblage distributions, the use of surface and pelagic gillnets should be more intensively incorporated in the study and monitoring of fish assemblages in shallow lakes and lake habitats.
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Affiliation(s)
- A Specziár
- Balaton Limnological Institute, MTA Centre for Ecological Research, Klebelsberg K. u. 3, H-8237, Tihany, Hungary.
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Takács P, Sály P, Specziár A, Bíró P, Erős T. Within year representativity of fish assemblage surveys in two small lowland streams. Folia Zoologica 2012. [DOI: 10.25225/fozo.v61.i2.a2.2012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Péter Takács
- Balaton Limnological Institute, Centre for Ecological Research of the Hungarian Academy of Sciences, H-8237, Tihany, Hungary
| | - Péter Sály
- Szent István University, Department of Zoology and Animal Ecology, H-2103, Gödöllő, Hungary
| | - András Specziár
- Balaton Limnological Institute, Centre for Ecological Research of the Hungarian Academy of Sciences, H-8237, Tihany, Hungary
| | - Péter Bíró
- Balaton Limnological Institute, Centre for Ecological Research of the Hungarian Academy of Sciences, H-8237, Tihany, Hungary
| | - Tibor Erős
- Balaton Limnological Institute, Centre for Ecological Research of the Hungarian Academy of Sciences, H-8237, Tihany, Hungary
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Erős T, Gustafsson P, Greenberg LA, Bergman E. Forest-stream linkages: effects of terrestrial invertebrate input and light on diet and growth of brown trout (Salmo trutta) in a boreal forest stream. PLoS One 2012; 7:e36462. [PMID: 22574164 PMCID: PMC3344874 DOI: 10.1371/journal.pone.0036462] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Accepted: 04/06/2012] [Indexed: 11/18/2022] Open
Abstract
Subsidies of energy and material from the riparian zone have large impacts on recipient stream habitats. Human-induced changes, such as deforestation, may profoundly affect these pathways. However, the strength of individual factors on stream ecosystems is poorly understood since the factors involved often interact in complex ways. We isolated two of these factors, manipulating the flux of terrestrial input and the intensity of light in a 2×2 factorial design, where we followed the growth and diet of two size-classes of brown trout (Salmo trutta) and the development of periphyton, grazer macroinvertebrates, terrestrial invertebrate inputs, and drift in twelve 20 m long enclosed stream reaches in a five-month-long experiment in a boreal coniferous forest stream. We found that light intensity, which was artificially increased 2.5 times above ambient levels, had an effect on grazer density, but no detectable effect on chlorophyll a biomass. We also found a seasonal effect on the amount of drift and that the reduction of terrestrial prey input, accomplished by covering enclosures with transparent plastic, had a negative impact on the amount of terrestrial invertebrates in the drift. Further, trout growth was strongly seasonal and followed the same pattern as drift biomass, and the reduction of terrestrial prey input had a negative effect on trout growth. Diet analysis was consistent with growth differences, showing that trout in open enclosures consumed relatively more terrestrial prey in summer than trout living in covered enclosures. We also predicted ontogenetic differences in the diet and growth of old and young trout, where we expected old fish to be more affected by the terrestrial prey reduction, but we found little evidence of ontogenetic differences. Overall, our results showed that reduced terrestrial prey inputs, as would be expected from forest harvesting, shaped differences in the growth and diet of the top predator, brown trout.
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Affiliation(s)
- Tibor Erős
- Department of Biology, Karlstad University, Karlstad, Sweden
- Centre for Ecological Research, Balaton Limnological Institute of the Hungarian Academy of Sciences, Tihany, Hungary
| | - Pär Gustafsson
- Department of Biology, Karlstad University, Karlstad, Sweden
- County Board of Värmland, Karlstad, Sweden
| | | | - Eva Bergman
- Department of Biology, Karlstad University, Karlstad, Sweden
- * E-mail:
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