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Fish communities in the lower Tagus inland wetlands: from anthropogenic pressures to conservation management

2022-06-17Conference object Open access
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dc.contributor.authorRibeiro, Diogo
dc.contributor.authorDias, Diogo
dc.contributor.authorSantos, Gil
dc.contributor.authorGago, João
dc.contributor.authorSerrano, Beatriz
dc.contributor.authorAlmeida, Luís
dc.contributor.authorMartelo, Joana
dc.contributor.authorCosta, Luís M.
dc.contributor.authorRibeiro, Filipe
dc.contributor.authorCatalão, João
dc.contributor.authorMagalhães, M. F.
dc.date.accessioned2023-01-31T14:35:15Z
dc.date.available2023-01-31T14:35:15Z
dc.date.issued2022-06-17
dc.description.abstractInland wetlands are important biodiversity hotspots and amongst the most impacted ecosystems worldwide. Conservation management and restauration actions in wetlands are thus urgently needed to reverse trends in species loss and habitat degradation, particularly in regions harbouring already endangered endemic species. Inland wetlands may play an important role in supporting endemic endangered fishes in the Lower Tagus basin, where anthropogenic pressures have been increasing, but there is a lack of studies on fish communities, and few areas are identified as inland wetlands. Here, we aim to identify small inland wetlands in the Lower Tagus River and their potential role in supporting fish species, constituting the first study to identify and evaluate the most important fish communities. Inland wetlands were identified through the usage of remote sensing techniques and the calculation of a Normalized Difference Water Index (NDWI) with Sentinel-2 imagery for the Lower Tagus region. From a total of 486 locations identified, 31 were recognized as wetlands as having potential to host fish communities, with 11 being selected for sampling after in loco assessment. Fish sampling was conducted between 6 May and 11 June 2021. Furthermore, for each wetland, we evaluated anthropogenic stressors and land use changes between 2007 and 2018, using national land use data (i.e., Carta de Uso e Ocupação do Solo). A total of 7727 fishes from eight non-native and five native species were captured. Overall, fish communities were dominated by non-native species (97% catches), but both European eel (Anguilla anguilla) and Lisbon arched-mouth nase (Iberochondrostoma olisiponense), which are globally classified as critically endangered (CR), were found in at least two wetlands. Our results suggest that, over the last 10 years, intensive agriculture decreased (on average ≈ 3%) in the areas surrounding these wetlands, being replaced by extensive agriculture or natural uses. Despite non-native fish prevalence, some wetlands may act as refuge habitats for CR fish species. These results are important for guiding the restoration of inland wetlands and promoting conservation management actions to help reverse fish diversity loss.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRibeiro, D.; Dias, D.; Santos, G.; Gago, J.; Serrano, B.; Almeida, L.; Martelo, J.; Costa, L.M.; Ribeiro, F.; Catalão, J.; Magalhães, M.F. (2022). Fish communities in the lower Tagus inland wetlands: from anthropogenic pressures to conservation management. Biology and Life Sciences Forum, 13 (1): 114. https://doi.org/10.3390/blsf2022013114pt_PT
dc.identifier.doihttps://doi.org/10.3390/blsf2022013114pt_PT
dc.identifier.eissn2673-9976
dc.identifier.urihttp://hdl.handle.net/10400.15/4280
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationProject SONICINVADERS - PTDC/CTA-AMB/28782/2017 - FCTpt_PT
dc.relation.publisherversionhttps://www.mdpi.com/2673-9976/13/1/114pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectRemote sensingpt_PT
dc.subjectAquatic habitatspt_PT
dc.subjectEndangered fish speciespt_PT
dc.subjectInvasive speciespt_PT
dc.subjectFreshwater biodiversitypt_PT
dc.titleFish communities in the lower Tagus inland wetlands: from anthropogenic pressures to conservation managementpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlacePortopt_PT
oaire.citation.issue1pt_PT
oaire.citation.titleThe IX Iberian Congress of Ichthyologypt_PT
oaire.citation.volume13pt_PT
person.familyNameAndré Evaristo de Matos Gago
person.givenNameJoão
person.identifier.ciencia-idB013-AE6E-192F
person.identifier.orcid0000-0003-3893-5920
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublication406ec75e-4f7c-4086-8c18-2e47234287b9
relation.isAuthorOfPublication.latestForDiscovery406ec75e-4f7c-4086-8c18-2e47234287b9

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