The Vanishing and the Establishment of a New Ecosystem on an Oceanic Island: Anthropogenic Impacts With No Return Ticket
[Abstract] A multiproxy approach was applied to a sediment core retrieved from the deep crater Lake Funda, located in the middle of the North Atlantic Ocean on Flores Island, Azores archipelago (Portugal). The purpose of this study was to determine how this ecosystem responded to natural and anthrop...
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Language: | English |
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Online Access: | http://hdl.handle.net/2183/31029 |
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ftunivcoruna:oai:ruc.udc.es:2183/31029 2024-04-21T08:08:08+00:00 The Vanishing and the Establishment of a New Ecosystem on an Oceanic Island: Anthropogenic Impacts With No Return Ticket Ritter, Catarina Gonçalves, Vítor Pla-Rabes, Sergi de Boer, Erik Bao, Roberto Sáez, Alberto Hernández, Armand Sixto, Marta Richter, Nora Benavente Marín, Mario Prego, Ricardo Giralt, Santiago Raposeiro, Pedro 2022-03-31 http://hdl.handle.net/2183/31029 eng eng Elsevier info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2016-75281-C2-2-R/ES/EL CLIMA HOLOCENO E IMPACTOS ECOLOGICOS DE LA INTERRELACION ENTRE EL PATRON DEL ATLANTICO ESTE (EA) Y LA OSCILACION DEL ATLANTICO NORTE (NAO) EN EL SUROESTE ATLANTICO EUROPEO/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RYC2020-029253-I/ES/ https://doi.org/10.1016/j.scitotenv.2022.154828 Ritter, C., Gonçalves, V., Pla-Rabes, S., de Boer, E. J., Bao, R., Sáez, A., Hernández, A., Sixto, M., Richter, N., Benavente, M., Prego, R., Giralt, S., & Raposeiro, P. M. (2022). The vanishing and the establishment of a new ecosystem on an oceanic island – Anthropogenic impacts with no return ticket. Science of The Total Environment, 830, 154828. https://doi.org/10.1016/j.scitotenv.2022.154828 0048-9697 http://hdl.handle.net/2183/31029 Atribución-NoComercial-SinDerivadas 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Anthropogenic impacts Eutrophication Remote oceanic islands Conservation management Multiproxy reconstruction Trophic changes info:eu-repo/semantics/article 2022 ftunivcoruna https://doi.org/10.1016/j.scitotenv.2022.154828 2024-03-27T15:03:44Z [Abstract] A multiproxy approach was applied to a sediment core retrieved from the deep crater Lake Funda, located in the middle of the North Atlantic Ocean on Flores Island, Azores archipelago (Portugal). The purpose of this study was to determine how this ecosystem responded to natural and anthropogenic forces over the last millennium. We distinguished three main phases in lake evolution using multiproxy reconstructions and documentary sources. (A) Climate and lake catchment processes, as well as internal ones, were the main drivers of ecosystem variability before 1335 CE, when human disturbances were absent in the Lake Funda catchment. (B) The second phase is marked by unprecedented changes in all studied proxies between 1335 and 1560 CE, including abrupt changes in the composition and diversity of diatom and chironomid assemblages. Synergistic effects from high climate variability and the onset of human disturbances in the catchment (e.g., introduction of livestock) during the Medieval Climate Anomaly-Little Ice Age transition, led to an increase in lake trophic state from mesotrophic to eutrophic conditions. (C) In the last phase (1560 CE to the present), the eutrophic conditions in Lake Funda were maintained through a positive feedback loop between lake productivity and in-lake phosphorous recycling. Variability within the lake ecosystem was mainly associated with climate variability and internal lake dynamics (e.g., phosphorus remobilization). Our results show that a paleoecological approach is crucial to understanding lake ecological states in the present-day in order to develop locally adapted management and restoration strategies. A long-term perspective enables us to understand the harmful consequences of ongoing climate change and human disturbances on lake ecosystems. The research was funded by the Portuguese Science Foundation (FCT) (DL57/2016/ICETA/EEC2018/25) and the DISCOVERAZORES (PTDC/CTA-AMB/28511/2017), together with the PaleoModes project (CGL2016-75281-C2) funded by the Spanish Ministry ... Article in Journal/Newspaper North Atlantic RUC - Repositorio Universidade Coruña Science of The Total Environment 830 154828 |
institution |
Open Polar |
collection |
RUC - Repositorio Universidade Coruña |
op_collection_id |
ftunivcoruna |
language |
English |
topic |
Anthropogenic impacts Eutrophication Remote oceanic islands Conservation management Multiproxy reconstruction Trophic changes |
spellingShingle |
Anthropogenic impacts Eutrophication Remote oceanic islands Conservation management Multiproxy reconstruction Trophic changes Ritter, Catarina Gonçalves, Vítor Pla-Rabes, Sergi de Boer, Erik Bao, Roberto Sáez, Alberto Hernández, Armand Sixto, Marta Richter, Nora Benavente Marín, Mario Prego, Ricardo Giralt, Santiago Raposeiro, Pedro The Vanishing and the Establishment of a New Ecosystem on an Oceanic Island: Anthropogenic Impacts With No Return Ticket |
topic_facet |
Anthropogenic impacts Eutrophication Remote oceanic islands Conservation management Multiproxy reconstruction Trophic changes |
description |
[Abstract] A multiproxy approach was applied to a sediment core retrieved from the deep crater Lake Funda, located in the middle of the North Atlantic Ocean on Flores Island, Azores archipelago (Portugal). The purpose of this study was to determine how this ecosystem responded to natural and anthropogenic forces over the last millennium. We distinguished three main phases in lake evolution using multiproxy reconstructions and documentary sources. (A) Climate and lake catchment processes, as well as internal ones, were the main drivers of ecosystem variability before 1335 CE, when human disturbances were absent in the Lake Funda catchment. (B) The second phase is marked by unprecedented changes in all studied proxies between 1335 and 1560 CE, including abrupt changes in the composition and diversity of diatom and chironomid assemblages. Synergistic effects from high climate variability and the onset of human disturbances in the catchment (e.g., introduction of livestock) during the Medieval Climate Anomaly-Little Ice Age transition, led to an increase in lake trophic state from mesotrophic to eutrophic conditions. (C) In the last phase (1560 CE to the present), the eutrophic conditions in Lake Funda were maintained through a positive feedback loop between lake productivity and in-lake phosphorous recycling. Variability within the lake ecosystem was mainly associated with climate variability and internal lake dynamics (e.g., phosphorus remobilization). Our results show that a paleoecological approach is crucial to understanding lake ecological states in the present-day in order to develop locally adapted management and restoration strategies. A long-term perspective enables us to understand the harmful consequences of ongoing climate change and human disturbances on lake ecosystems. The research was funded by the Portuguese Science Foundation (FCT) (DL57/2016/ICETA/EEC2018/25) and the DISCOVERAZORES (PTDC/CTA-AMB/28511/2017), together with the PaleoModes project (CGL2016-75281-C2) funded by the Spanish Ministry ... |
format |
Article in Journal/Newspaper |
author |
Ritter, Catarina Gonçalves, Vítor Pla-Rabes, Sergi de Boer, Erik Bao, Roberto Sáez, Alberto Hernández, Armand Sixto, Marta Richter, Nora Benavente Marín, Mario Prego, Ricardo Giralt, Santiago Raposeiro, Pedro |
author_facet |
Ritter, Catarina Gonçalves, Vítor Pla-Rabes, Sergi de Boer, Erik Bao, Roberto Sáez, Alberto Hernández, Armand Sixto, Marta Richter, Nora Benavente Marín, Mario Prego, Ricardo Giralt, Santiago Raposeiro, Pedro |
author_sort |
Ritter, Catarina |
title |
The Vanishing and the Establishment of a New Ecosystem on an Oceanic Island: Anthropogenic Impacts With No Return Ticket |
title_short |
The Vanishing and the Establishment of a New Ecosystem on an Oceanic Island: Anthropogenic Impacts With No Return Ticket |
title_full |
The Vanishing and the Establishment of a New Ecosystem on an Oceanic Island: Anthropogenic Impacts With No Return Ticket |
title_fullStr |
The Vanishing and the Establishment of a New Ecosystem on an Oceanic Island: Anthropogenic Impacts With No Return Ticket |
title_full_unstemmed |
The Vanishing and the Establishment of a New Ecosystem on an Oceanic Island: Anthropogenic Impacts With No Return Ticket |
title_sort |
vanishing and the establishment of a new ecosystem on an oceanic island: anthropogenic impacts with no return ticket |
publisher |
Elsevier |
publishDate |
2022 |
url |
http://hdl.handle.net/2183/31029 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2016-75281-C2-2-R/ES/EL CLIMA HOLOCENO E IMPACTOS ECOLOGICOS DE LA INTERRELACION ENTRE EL PATRON DEL ATLANTICO ESTE (EA) Y LA OSCILACION DEL ATLANTICO NORTE (NAO) EN EL SUROESTE ATLANTICO EUROPEO/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RYC2020-029253-I/ES/ https://doi.org/10.1016/j.scitotenv.2022.154828 Ritter, C., Gonçalves, V., Pla-Rabes, S., de Boer, E. J., Bao, R., Sáez, A., Hernández, A., Sixto, M., Richter, N., Benavente, M., Prego, R., Giralt, S., & Raposeiro, P. M. (2022). The vanishing and the establishment of a new ecosystem on an oceanic island – Anthropogenic impacts with no return ticket. Science of The Total Environment, 830, 154828. https://doi.org/10.1016/j.scitotenv.2022.154828 0048-9697 http://hdl.handle.net/2183/31029 |
op_rights |
Atribución-NoComercial-SinDerivadas 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.scitotenv.2022.154828 |
container_title |
Science of The Total Environment |
container_volume |
830 |
container_start_page |
154828 |
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1796948343436345344 |