Can a restocking event with European (glass) eels cause early changes in local biological communities and its ecological status?
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/29234 https://doi.org/10.1016/j.gecco.2019.e00884 |
Resumo: | In an attempt to assist the recovery of the panmictic population of the European eel, declining since the late 1980s, the restocking of areas with low or no natural recruitment has been one of the measures adopted to reverse this trend. However, the main focus in several monitoring programmes for these actions, has been in the best interest of its viability and cost/benefit relationships and, for that, the condition of the released stocks has been the main concern. Yet, so far, no studies have assessed the potential ecological impacts that restocking might have on other biological communities. This pioneer pilot study aimed to evaluate the early ecological impact of a restocking event on other biological communities, considering inter-specific competition (other fish species) and feeding impact (macroinvertebrates).The reference condition of the biological communities of an inland tributary of the Mondego river, the River Ceira, was determined in three sites inaccessible to the natural recruitment of eels, followed by a post-stocking assessment. The results showed no significant changes in the fish assemblages in restocked areas, contrary to the macroinvertebrate community. However, the ecological status for the macroinvertebrate community showed no deleterious effects, with the results suggesting exactly the opposite. This may be related to the low density of the restocked eels and factors influencing the local trophic web. This study confirms the suitability of the habitat for restocking with glass eels, during its early stages, without disrupting the local ecological status, using densities close to those of natural recruitment. |
id |
RCAP_452391319d817ef374b3daffd7e7fa7d |
---|---|
oai_identifier_str |
oai:dspace.uevora.pt:10174/29234 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Can a restocking event with European (glass) eels cause early changes in local biological communities and its ecological status?StockingElversCompetitionTrophic disruptionMacroinvertebratesFish speciesInland tributaryMondego basinIn an attempt to assist the recovery of the panmictic population of the European eel, declining since the late 1980s, the restocking of areas with low or no natural recruitment has been one of the measures adopted to reverse this trend. However, the main focus in several monitoring programmes for these actions, has been in the best interest of its viability and cost/benefit relationships and, for that, the condition of the released stocks has been the main concern. Yet, so far, no studies have assessed the potential ecological impacts that restocking might have on other biological communities. This pioneer pilot study aimed to evaluate the early ecological impact of a restocking event on other biological communities, considering inter-specific competition (other fish species) and feeding impact (macroinvertebrates).The reference condition of the biological communities of an inland tributary of the Mondego river, the River Ceira, was determined in three sites inaccessible to the natural recruitment of eels, followed by a post-stocking assessment. The results showed no significant changes in the fish assemblages in restocked areas, contrary to the macroinvertebrate community. However, the ecological status for the macroinvertebrate community showed no deleterious effects, with the results suggesting exactly the opposite. This may be related to the low density of the restocked eels and factors influencing the local trophic web. This study confirms the suitability of the habitat for restocking with glass eels, during its early stages, without disrupting the local ecological status, using densities close to those of natural recruitment.Elsevier2021-03-05T12:05:57Z2021-03-052020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/29234http://hdl.handle.net/10174/29234https://doi.org/10.1016/j.gecco.2019.e00884engFélix, P.M.; J.L. Costa; R. Monteiro; N. Castro; B.R. Quintella; P.R. Almeida & I. Domingos (2020). Can a restocking event with European (glass) eels cause early changes in local biological communities and its ecological status? Global Ecology and Conservation, 21, e00884.ndndndndbsquintella@fc.ul.ptpmra@uevora.ptnd223Félix, P.M.Costa, J.L.Monteiro, R.Castro, N.Quintella, B.R.Almeida, P.R.Domingos, I.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:26:24Zoai:dspace.uevora.pt:10174/29234Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:19:00.884150Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Can a restocking event with European (glass) eels cause early changes in local biological communities and its ecological status? |
title |
Can a restocking event with European (glass) eels cause early changes in local biological communities and its ecological status? |
spellingShingle |
Can a restocking event with European (glass) eels cause early changes in local biological communities and its ecological status? Félix, P.M. Stocking Elvers Competition Trophic disruption Macroinvertebrates Fish species Inland tributary Mondego basin |
title_short |
Can a restocking event with European (glass) eels cause early changes in local biological communities and its ecological status? |
title_full |
Can a restocking event with European (glass) eels cause early changes in local biological communities and its ecological status? |
title_fullStr |
Can a restocking event with European (glass) eels cause early changes in local biological communities and its ecological status? |
title_full_unstemmed |
Can a restocking event with European (glass) eels cause early changes in local biological communities and its ecological status? |
title_sort |
Can a restocking event with European (glass) eels cause early changes in local biological communities and its ecological status? |
author |
Félix, P.M. |
author_facet |
Félix, P.M. Costa, J.L. Monteiro, R. Castro, N. Quintella, B.R. Almeida, P.R. Domingos, I. |
author_role |
author |
author2 |
Costa, J.L. Monteiro, R. Castro, N. Quintella, B.R. Almeida, P.R. Domingos, I. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Félix, P.M. Costa, J.L. Monteiro, R. Castro, N. Quintella, B.R. Almeida, P.R. Domingos, I. |
dc.subject.por.fl_str_mv |
Stocking Elvers Competition Trophic disruption Macroinvertebrates Fish species Inland tributary Mondego basin |
topic |
Stocking Elvers Competition Trophic disruption Macroinvertebrates Fish species Inland tributary Mondego basin |
description |
In an attempt to assist the recovery of the panmictic population of the European eel, declining since the late 1980s, the restocking of areas with low or no natural recruitment has been one of the measures adopted to reverse this trend. However, the main focus in several monitoring programmes for these actions, has been in the best interest of its viability and cost/benefit relationships and, for that, the condition of the released stocks has been the main concern. Yet, so far, no studies have assessed the potential ecological impacts that restocking might have on other biological communities. This pioneer pilot study aimed to evaluate the early ecological impact of a restocking event on other biological communities, considering inter-specific competition (other fish species) and feeding impact (macroinvertebrates).The reference condition of the biological communities of an inland tributary of the Mondego river, the River Ceira, was determined in three sites inaccessible to the natural recruitment of eels, followed by a post-stocking assessment. The results showed no significant changes in the fish assemblages in restocked areas, contrary to the macroinvertebrate community. However, the ecological status for the macroinvertebrate community showed no deleterious effects, with the results suggesting exactly the opposite. This may be related to the low density of the restocked eels and factors influencing the local trophic web. This study confirms the suitability of the habitat for restocking with glass eels, during its early stages, without disrupting the local ecological status, using densities close to those of natural recruitment. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01T00:00:00Z 2021-03-05T12:05:57Z 2021-03-05 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/29234 http://hdl.handle.net/10174/29234 https://doi.org/10.1016/j.gecco.2019.e00884 |
url |
http://hdl.handle.net/10174/29234 https://doi.org/10.1016/j.gecco.2019.e00884 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Félix, P.M.; J.L. Costa; R. Monteiro; N. Castro; B.R. Quintella; P.R. Almeida & I. Domingos (2020). Can a restocking event with European (glass) eels cause early changes in local biological communities and its ecological status? Global Ecology and Conservation, 21, e00884. nd nd nd nd bsquintella@fc.ul.pt pmra@uevora.pt nd 223 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799136672156221440 |