Decadal increase in the ecological status of a North-Atlantic intertidal seagrass meadow observed with multi-mission satellite time-series
International audience Seagrass meadows are monitored in the frame of several environmental programs worldwide, including the Water Framework Directive (WFD), to evaluate the ecological status of European coastal and transitional water bodies. The large size, spatial complexity, and interannual vari...
Published in: | Ecological Indicators |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2021
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Subjects: | |
Online Access: | https://hal.science/hal-03330095 https://hal.science/hal-03330095/document https://hal.science/hal-03330095/file/Zoffoli%20et%20al.%202021%20%5BEcol%20Indic%5D%20Zostera%20meadows%20observed%20with%20multi-mission%20satellite%20time-series.pdf https://doi.org/10.1016/j.ecolind.2021.108033 |
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ftnormandieuniv:oai:HAL:hal-03330095v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Normandie Université: HAL |
op_collection_id |
ftnormandieuniv |
language |
English |
topic |
Water Framework Directive Interannual variability Ecosystem monitoring Earth Observation Recovery Zostera noltei Zostera noltii [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems |
spellingShingle |
Water Framework Directive Interannual variability Ecosystem monitoring Earth Observation Recovery Zostera noltei Zostera noltii [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems Zoffoli, Maria, Laura Gernez, Pierre Godet, Laurent Peters, Steef Oiry, Simon Barillé, Laurent Decadal increase in the ecological status of a North-Atlantic intertidal seagrass meadow observed with multi-mission satellite time-series |
topic_facet |
Water Framework Directive Interannual variability Ecosystem monitoring Earth Observation Recovery Zostera noltei Zostera noltii [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems |
description |
International audience Seagrass meadows are monitored in the frame of several environmental programs worldwide, including the Water Framework Directive (WFD), to evaluate the ecological status of European coastal and transitional water bodies. The large size, spatial complexity, and interannual variability of seagrass ecosystems significantly challenge field monitoring. In this study, a multi-mission satellite time-series was used to estimate long-term changes in seagrass status in a macrotidal system dominated by Zostera noltei, at Bourgneuf Bay (French Atlantic coast). Metrics of seagrass extent and density were obtained from Earth Observation (EO) using validated and inter-calibrated Landsat, SPOT and Sentinel2 data from 1985 to 2020. The information provided by satellite data made it possible to compute and compare several seagrass indicators currently in use in several European countries (France, Portugal and UK) within the WFD. Both the seagrass extent and meadow-averaged density displayed increasing trends since 1985. A time-series of merged observations from various satellites revealed a high degree of interannual variability in seagrass extent, with abrupt losses (up to 50% within one year) alternating with periods of slow recovery (typically 4-6 years). The seagrass meadow which was in a moderate status (sensu the WFD) in the 1980s, achieved an overall recurrent good or high status since the mid-1990s. Altogether, the methods and results presented here demonstrated that EO is a reliable source of information for mapping and assessing the status of intertidal seagrass, complementing in situ measurements by providing long-term, spatial view and standardized observation framework. We recommend the systematic use of EO time-series in complement to traditional field measurements in seagrass monitoring programs such as the WFD. |
author2 |
Mer, molécules et santé EA 2160 (MMS) Le Mans Université (UM)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST) Université de Nantes (UN)-Université de Nantes (UN)-Université de Nantes - UFR des Sciences Pharmaceutiques et Biologiques Université de Nantes (UN)-Université de Nantes (UN) Littoral, Environnement, Télédétection, Géomatique (LETG - Nantes) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN) |
format |
Article in Journal/Newspaper |
author |
Zoffoli, Maria, Laura Gernez, Pierre Godet, Laurent Peters, Steef Oiry, Simon Barillé, Laurent |
author_facet |
Zoffoli, Maria, Laura Gernez, Pierre Godet, Laurent Peters, Steef Oiry, Simon Barillé, Laurent |
author_sort |
Zoffoli, Maria, Laura |
title |
Decadal increase in the ecological status of a North-Atlantic intertidal seagrass meadow observed with multi-mission satellite time-series |
title_short |
Decadal increase in the ecological status of a North-Atlantic intertidal seagrass meadow observed with multi-mission satellite time-series |
title_full |
Decadal increase in the ecological status of a North-Atlantic intertidal seagrass meadow observed with multi-mission satellite time-series |
title_fullStr |
Decadal increase in the ecological status of a North-Atlantic intertidal seagrass meadow observed with multi-mission satellite time-series |
title_full_unstemmed |
Decadal increase in the ecological status of a North-Atlantic intertidal seagrass meadow observed with multi-mission satellite time-series |
title_sort |
decadal increase in the ecological status of a north-atlantic intertidal seagrass meadow observed with multi-mission satellite time-series |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03330095 https://hal.science/hal-03330095/document https://hal.science/hal-03330095/file/Zoffoli%20et%20al.%202021%20%5BEcol%20Indic%5D%20Zostera%20meadows%20observed%20with%20multi-mission%20satellite%20time-series.pdf https://doi.org/10.1016/j.ecolind.2021.108033 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1470-160X EISSN: 1872-7034 Ecological Indicators https://hal.science/hal-03330095 Ecological Indicators, 2021, 130, pp.108033. ⟨10.1016/j.ecolind.2021.108033⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecolind.2021.108033 hal-03330095 https://hal.science/hal-03330095 https://hal.science/hal-03330095/document https://hal.science/hal-03330095/file/Zoffoli%20et%20al.%202021%20%5BEcol%20Indic%5D%20Zostera%20meadows%20observed%20with%20multi-mission%20satellite%20time-series.pdf doi:10.1016/j.ecolind.2021.108033 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.ecolind.2021.108033 |
container_title |
Ecological Indicators |
container_volume |
130 |
container_start_page |
108033 |
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1799485517467746304 |
spelling |
ftnormandieuniv:oai:HAL:hal-03330095v1 2024-05-19T07:45:28+00:00 Decadal increase in the ecological status of a North-Atlantic intertidal seagrass meadow observed with multi-mission satellite time-series Zoffoli, Maria, Laura Gernez, Pierre Godet, Laurent Peters, Steef Oiry, Simon Barillé, Laurent Mer, molécules et santé EA 2160 (MMS) Le Mans Université (UM)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST) Université de Nantes (UN)-Université de Nantes (UN)-Université de Nantes - UFR des Sciences Pharmaceutiques et Biologiques Université de Nantes (UN)-Université de Nantes (UN) Littoral, Environnement, Télédétection, Géomatique (LETG - Nantes) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN) 2021 https://hal.science/hal-03330095 https://hal.science/hal-03330095/document https://hal.science/hal-03330095/file/Zoffoli%20et%20al.%202021%20%5BEcol%20Indic%5D%20Zostera%20meadows%20observed%20with%20multi-mission%20satellite%20time-series.pdf https://doi.org/10.1016/j.ecolind.2021.108033 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecolind.2021.108033 hal-03330095 https://hal.science/hal-03330095 https://hal.science/hal-03330095/document https://hal.science/hal-03330095/file/Zoffoli%20et%20al.%202021%20%5BEcol%20Indic%5D%20Zostera%20meadows%20observed%20with%20multi-mission%20satellite%20time-series.pdf doi:10.1016/j.ecolind.2021.108033 info:eu-repo/semantics/OpenAccess ISSN: 1470-160X EISSN: 1872-7034 Ecological Indicators https://hal.science/hal-03330095 Ecological Indicators, 2021, 130, pp.108033. ⟨10.1016/j.ecolind.2021.108033⟩ Water Framework Directive Interannual variability Ecosystem monitoring Earth Observation Recovery Zostera noltei Zostera noltii [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.ECO]Life Sciences [q-bio]/Ecology environment/Ecosystems info:eu-repo/semantics/article Journal articles 2021 ftnormandieuniv https://doi.org/10.1016/j.ecolind.2021.108033 2024-05-01T23:54:27Z International audience Seagrass meadows are monitored in the frame of several environmental programs worldwide, including the Water Framework Directive (WFD), to evaluate the ecological status of European coastal and transitional water bodies. The large size, spatial complexity, and interannual variability of seagrass ecosystems significantly challenge field monitoring. In this study, a multi-mission satellite time-series was used to estimate long-term changes in seagrass status in a macrotidal system dominated by Zostera noltei, at Bourgneuf Bay (French Atlantic coast). Metrics of seagrass extent and density were obtained from Earth Observation (EO) using validated and inter-calibrated Landsat, SPOT and Sentinel2 data from 1985 to 2020. The information provided by satellite data made it possible to compute and compare several seagrass indicators currently in use in several European countries (France, Portugal and UK) within the WFD. Both the seagrass extent and meadow-averaged density displayed increasing trends since 1985. A time-series of merged observations from various satellites revealed a high degree of interannual variability in seagrass extent, with abrupt losses (up to 50% within one year) alternating with periods of slow recovery (typically 4-6 years). The seagrass meadow which was in a moderate status (sensu the WFD) in the 1980s, achieved an overall recurrent good or high status since the mid-1990s. Altogether, the methods and results presented here demonstrated that EO is a reliable source of information for mapping and assessing the status of intertidal seagrass, complementing in situ measurements by providing long-term, spatial view and standardized observation framework. We recommend the systematic use of EO time-series in complement to traditional field measurements in seagrass monitoring programs such as the WFD. Article in Journal/Newspaper North Atlantic Normandie Université: HAL Ecological Indicators 130 108033 |