Exploring South African Pacific oyster mariculture potential through combined Earth observation and bioenergetics modelling
The combined use of satellite-derived environmental data and a dynamic energy budget (DEB) model to determine Pacific oyster growth potential was adapted for the South African marine environment. Study areas consisted of the West Coast (high-chlorophyll, low temperature) and the South Coast (variabl...
Published in: | Aquaculture Reports |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier BV
2022
|
Subjects: | |
Online Access: | https://archimer.ifremer.fr/doc/00770/88236/93784.pdf https://archimer.ifremer.fr/doc/00770/88236/93785.docx https://archimer.ifremer.fr/doc/00770/88236/93786.docx https://doi.org/10.1016/j.aqrep.2022.101155 https://archimer.ifremer.fr/doc/00770/88236/ |
id |
ftarchimer:oai:archimer.ifremer.fr:88236 |
---|---|
record_format |
openpolar |
spelling |
ftarchimer:oai:archimer.ifremer.fr:88236 2023-05-15T15:58:57+02:00 Exploring South African Pacific oyster mariculture potential through combined Earth observation and bioenergetics modelling Krupandan, Amalia Grace Gernez, Pierre Palmer, Stephanie Thomas, Yoann Barillé, Laurent 2022-06 application/pdf https://archimer.ifremer.fr/doc/00770/88236/93784.pdf https://archimer.ifremer.fr/doc/00770/88236/93785.docx https://archimer.ifremer.fr/doc/00770/88236/93786.docx https://doi.org/10.1016/j.aqrep.2022.101155 https://archimer.ifremer.fr/doc/00770/88236/ eng eng Elsevier BV https://archimer.ifremer.fr/doc/00770/88236/93784.pdf https://archimer.ifremer.fr/doc/00770/88236/93785.docx https://archimer.ifremer.fr/doc/00770/88236/93786.docx doi:10.1016/j.aqrep.2022.101155 https://archimer.ifremer.fr/doc/00770/88236/ info:eu-repo/semantics/openAccess restricted use Aquaculture Reports (2352-5134) (Elsevier BV), 2022-06 , Vol. 24 , P. 101155 (12p.) Crassostrea gigas Dynamic Energy Budget model Earth observation Marine Spatial Planning Site selection South African aquaculture text Publication info:eu-repo/semantics/article 2022 ftarchimer https://doi.org/10.1016/j.aqrep.2022.101155 2022-06-14T22:50:14Z The combined use of satellite-derived environmental data and a dynamic energy budget (DEB) model to determine Pacific oyster growth potential was adapted for the South African marine environment. Study areas consisted of the West Coast (high-chlorophyll, low temperature) and the South Coast (variable chlorophyll, higher temperature) ecoregions. Chlorophyll-a and sea surface temperature products from the Moderate Resolution Imaging Spectroradiometer (MODIS) were used to simulate yearly growth for 18 years. Average growth performance at the end of the culture period was mapped and compared for prominent sectors. Industry-relevant growth indicators, "days to reach commercial weight" and "optimal culture period length" were also established. High growth potential was found in eastern nearshore sectors of the South Coast, particularly Plettenberg Bay, where oysters reached a median total weight (TW) of 271 g within 9 months. Other sectors in the region yielded Large commercial size within 150 days. However, South Coast growth hotspots were found to be highly variable, with transient unfavourable growth conditions leading to low flesh mass relative to TW. Growth potential was favourable in northern sectors of the West Coast, where oysters reached a median TW of up to 148 g in 9 months, Large commercial size within 200 days, and contained high flesh mass relative to TW. Current oyster production sites were not found to be optimal for growth. Higher-growth sites coincide with areas in economic decline or with high levels of poverty. However, due to constraints of applying DEB models over large spatial scales, these results are considered preliminary and await in situ verification, as well as a spatial multi-criteria analysis, before investment and development. Article in Journal/Newspaper Crassostrea gigas Pacific oyster Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Pacific Aquaculture Reports 24 101155 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Crassostrea gigas Dynamic Energy Budget model Earth observation Marine Spatial Planning Site selection South African aquaculture |
spellingShingle |
Crassostrea gigas Dynamic Energy Budget model Earth observation Marine Spatial Planning Site selection South African aquaculture Krupandan, Amalia Grace Gernez, Pierre Palmer, Stephanie Thomas, Yoann Barillé, Laurent Exploring South African Pacific oyster mariculture potential through combined Earth observation and bioenergetics modelling |
topic_facet |
Crassostrea gigas Dynamic Energy Budget model Earth observation Marine Spatial Planning Site selection South African aquaculture |
description |
The combined use of satellite-derived environmental data and a dynamic energy budget (DEB) model to determine Pacific oyster growth potential was adapted for the South African marine environment. Study areas consisted of the West Coast (high-chlorophyll, low temperature) and the South Coast (variable chlorophyll, higher temperature) ecoregions. Chlorophyll-a and sea surface temperature products from the Moderate Resolution Imaging Spectroradiometer (MODIS) were used to simulate yearly growth for 18 years. Average growth performance at the end of the culture period was mapped and compared for prominent sectors. Industry-relevant growth indicators, "days to reach commercial weight" and "optimal culture period length" were also established. High growth potential was found in eastern nearshore sectors of the South Coast, particularly Plettenberg Bay, where oysters reached a median total weight (TW) of 271 g within 9 months. Other sectors in the region yielded Large commercial size within 150 days. However, South Coast growth hotspots were found to be highly variable, with transient unfavourable growth conditions leading to low flesh mass relative to TW. Growth potential was favourable in northern sectors of the West Coast, where oysters reached a median TW of up to 148 g in 9 months, Large commercial size within 200 days, and contained high flesh mass relative to TW. Current oyster production sites were not found to be optimal for growth. Higher-growth sites coincide with areas in economic decline or with high levels of poverty. However, due to constraints of applying DEB models over large spatial scales, these results are considered preliminary and await in situ verification, as well as a spatial multi-criteria analysis, before investment and development. |
format |
Article in Journal/Newspaper |
author |
Krupandan, Amalia Grace Gernez, Pierre Palmer, Stephanie Thomas, Yoann Barillé, Laurent |
author_facet |
Krupandan, Amalia Grace Gernez, Pierre Palmer, Stephanie Thomas, Yoann Barillé, Laurent |
author_sort |
Krupandan, Amalia Grace |
title |
Exploring South African Pacific oyster mariculture potential through combined Earth observation and bioenergetics modelling |
title_short |
Exploring South African Pacific oyster mariculture potential through combined Earth observation and bioenergetics modelling |
title_full |
Exploring South African Pacific oyster mariculture potential through combined Earth observation and bioenergetics modelling |
title_fullStr |
Exploring South African Pacific oyster mariculture potential through combined Earth observation and bioenergetics modelling |
title_full_unstemmed |
Exploring South African Pacific oyster mariculture potential through combined Earth observation and bioenergetics modelling |
title_sort |
exploring south african pacific oyster mariculture potential through combined earth observation and bioenergetics modelling |
publisher |
Elsevier BV |
publishDate |
2022 |
url |
https://archimer.ifremer.fr/doc/00770/88236/93784.pdf https://archimer.ifremer.fr/doc/00770/88236/93785.docx https://archimer.ifremer.fr/doc/00770/88236/93786.docx https://doi.org/10.1016/j.aqrep.2022.101155 https://archimer.ifremer.fr/doc/00770/88236/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
Aquaculture Reports (2352-5134) (Elsevier BV), 2022-06 , Vol. 24 , P. 101155 (12p.) |
op_relation |
https://archimer.ifremer.fr/doc/00770/88236/93784.pdf https://archimer.ifremer.fr/doc/00770/88236/93785.docx https://archimer.ifremer.fr/doc/00770/88236/93786.docx doi:10.1016/j.aqrep.2022.101155 https://archimer.ifremer.fr/doc/00770/88236/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.aqrep.2022.101155 |
container_title |
Aquaculture Reports |
container_volume |
24 |
container_start_page |
101155 |
_version_ |
1766394728619704320 |