The vanishing and the establishment of a new ecosystem on an oceanic island – Anthropogenic impacts with no return ticket
15 pages, 4 figures.-- Under a Creative Commons license 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 th...
Published in: | Science of The Total Environment |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier
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Online Access: | http://hdl.handle.net/10261/266054 https://doi.org/10.1016/j.scitotenv.2022.154828 https://doi.org/10.13039/501100003329 |
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ftcsic:oai:digital.csic.es:10261/266054 2024-02-11T10:06:41+01:00 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, S. de Boer, Erik J. Bao, Roberto Sáez, Alberto Hernández, Armand Sixto Ruiz, Marta Richter, Nora Benavente-Marín, Mario Prego, R. Giralt, Santiago Raposeiro, P. M. Ministerio de Economía y Competitividad (España) Ministerio de Ciencia, Innovación y Universidades (España) 2022 http://hdl.handle.net/10261/266054 https://doi.org/10.1016/j.scitotenv.2022.154828 https://doi.org/10.13039/501100003329 en eng Elsevier https://doi.org/10.1016/j.scitotenv.2022.154828 Sí Science of the Total Environment 830: 154828 (2022) 0048-9697 http://hdl.handle.net/10261/266054 doi:10.1016/j.scitotenv.2022.154828 1879-1026 http://dx.doi.org/10.13039/501100003329 open Anthropogenic impacts Eutrophication Remote oceanic islands Conservation managemen Multiproxy reconstruction Trophic changes artículo http://purl.org/coar/resource_type/c_6501 2022 ftcsic https://doi.org/10.1016/j.scitotenv.2022.15482810.13039/501100003329 2024-01-16T11:22:34Z 15 pages, 4 figures.-- Under a Creative Commons license 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 ... Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Crater Lake ENVELOPE(-60.667,-60.667,-62.983,-62.983) Science of The Total Environment 830 154828 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Anthropogenic impacts Eutrophication Remote oceanic islands Conservation managemen Multiproxy reconstruction Trophic changes |
spellingShingle |
Anthropogenic impacts Eutrophication Remote oceanic islands Conservation managemen Multiproxy reconstruction Trophic changes Ritter, Catarina Gonçalves, Vítor Pla-Rabes, S. de Boer, Erik J. Bao, Roberto Sáez, Alberto Hernández, Armand Sixto Ruiz, Marta Richter, Nora Benavente-Marín, Mario Prego, R. Giralt, Santiago Raposeiro, P. M. 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 managemen Multiproxy reconstruction Trophic changes |
description |
15 pages, 4 figures.-- Under a Creative Commons license 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 ... |
author2 |
Ministerio de Economía y Competitividad (España) Ministerio de Ciencia, Innovación y Universidades (España) |
format |
Article in Journal/Newspaper |
author |
Ritter, Catarina Gonçalves, Vítor Pla-Rabes, S. de Boer, Erik J. Bao, Roberto Sáez, Alberto Hernández, Armand Sixto Ruiz, Marta Richter, Nora Benavente-Marín, Mario Prego, R. Giralt, Santiago Raposeiro, P. M. |
author_facet |
Ritter, Catarina Gonçalves, Vítor Pla-Rabes, S. de Boer, Erik J. Bao, Roberto Sáez, Alberto Hernández, Armand Sixto Ruiz, Marta Richter, Nora Benavente-Marín, Mario Prego, R. Giralt, Santiago Raposeiro, P. M. |
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/10261/266054 https://doi.org/10.1016/j.scitotenv.2022.154828 https://doi.org/10.13039/501100003329 |
long_lat |
ENVELOPE(-60.667,-60.667,-62.983,-62.983) |
geographic |
Crater Lake |
geographic_facet |
Crater Lake |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://doi.org/10.1016/j.scitotenv.2022.154828 Sí Science of the Total Environment 830: 154828 (2022) 0048-9697 http://hdl.handle.net/10261/266054 doi:10.1016/j.scitotenv.2022.154828 1879-1026 http://dx.doi.org/10.13039/501100003329 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/j.scitotenv.2022.15482810.13039/501100003329 |
container_title |
Science of The Total Environment |
container_volume |
830 |
container_start_page |
154828 |
_version_ |
1790604567975559168 |