Integrated multi-trophic aquaculture systems: energy transfers and food web organization in coastal earthen ponds
Three Ecopath models were built to reproduce 3 experimental treatments carried out in earthen ponds located in Olhao, southern Portugal, to understand the energy transferred and the ecosystem state in integrated multi-trophic aquaculture (IMTA). These earthen ponds behave as simplified ecosystems or...
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2020
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Online Access: | http://hdl.handle.net/10400.1/14919 https://doi.org/10.3354/aei00375 |
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ftunivalgarve:oai:sapientia.ualg.pt:10400.1/14919 2023-05-15T15:59:00+02:00 Integrated multi-trophic aquaculture systems: energy transfers and food web organization in coastal earthen ponds Gamito, Sofia Quental-Ferreira, H Parejo, A Aubin, J Christensen, V Cunha, ME 2020 http://hdl.handle.net/10400.1/14919 https://doi.org/10.3354/aei00375 eng eng Inter Research 1869-215X http://hdl.handle.net/10400.1/14919 doi:10.3354/aei00375 openAccess http://creativecommons.org/licenses/by/4.0/ CC-BY Integrated multi-trophic aquaculture systems Sustainable aquaculture IMTA Ecopath models Earthen pond ecosystems Ecosystem energy transfer article 2020 ftunivalgarve https://doi.org/10.3354/aei00375 2022-05-30T08:49:27Z Three Ecopath models were built to reproduce 3 experimental treatments carried out in earthen ponds located in Olhao, southern Portugal, to understand the energy transferred and the ecosystem state in integrated multi-trophic aquaculture (IMTA). These earthen ponds behave as simplified ecosystems or mesocosms, with well-defined borders, where the relationships between trophic groups can be described through ecosystem modeling. Different combinations of species were produced in these ponds, corresponding to the 3 treatments: (1) fish, oysters and macroalgae (FOM); (2) fish and oysters (FO); and (3) fish and macroalgae (FM). The managed species were meagre Argyrosomus regius, white seabream Diplodus sargus, flathead grey mullet Mugil cephalus, Japanese oyster Crassostrea gigas and sea lettuce Ultra spp. The results showed that the total amount of energy throughput was 15 to 17 times higher when compared with an equivalent naturalized system. The high biomass and low recycling indicated an immature system with low resilience and low stability that demands high rates of water renewal and aeration to maintain good water-quality levels for finfish production. The addition of oysters and macroalgae in the FOM treatment appeared to improve the water quality, since oysters controlled the excess of phytoplankton produced in the ponds by ingesting a fair amount of the phytoplankton, while the macroalgae helped in the absorption of excess nutrients and created a habitat for periphyton and associated macroinvertebrates. Some ecosystem attributes of the FOM ponds approached the values of the naturalized model, suggesting a possible path towards more sustainable aquaculture. COFASP/0003/2015 Interreg Atlantic Area project INTEGRATE EAPA_232/2016 project DIVERSIAQUA Mar2020 16-02-01-FMP-0066 UID/Multi/04326/2019/UID/Multi/04326/2020 info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper Crassostrea gigas Universidade do Algarve: Sapienta Imta ENVELOPE(156.945,156.945,61.792,61.792) Aquaculture Environment Interactions 12 457 470 |
institution |
Open Polar |
collection |
Universidade do Algarve: Sapienta |
op_collection_id |
ftunivalgarve |
language |
English |
topic |
Integrated multi-trophic aquaculture systems Sustainable aquaculture IMTA Ecopath models Earthen pond ecosystems Ecosystem energy transfer |
spellingShingle |
Integrated multi-trophic aquaculture systems Sustainable aquaculture IMTA Ecopath models Earthen pond ecosystems Ecosystem energy transfer Gamito, Sofia Quental-Ferreira, H Parejo, A Aubin, J Christensen, V Cunha, ME Integrated multi-trophic aquaculture systems: energy transfers and food web organization in coastal earthen ponds |
topic_facet |
Integrated multi-trophic aquaculture systems Sustainable aquaculture IMTA Ecopath models Earthen pond ecosystems Ecosystem energy transfer |
description |
Three Ecopath models were built to reproduce 3 experimental treatments carried out in earthen ponds located in Olhao, southern Portugal, to understand the energy transferred and the ecosystem state in integrated multi-trophic aquaculture (IMTA). These earthen ponds behave as simplified ecosystems or mesocosms, with well-defined borders, where the relationships between trophic groups can be described through ecosystem modeling. Different combinations of species were produced in these ponds, corresponding to the 3 treatments: (1) fish, oysters and macroalgae (FOM); (2) fish and oysters (FO); and (3) fish and macroalgae (FM). The managed species were meagre Argyrosomus regius, white seabream Diplodus sargus, flathead grey mullet Mugil cephalus, Japanese oyster Crassostrea gigas and sea lettuce Ultra spp. The results showed that the total amount of energy throughput was 15 to 17 times higher when compared with an equivalent naturalized system. The high biomass and low recycling indicated an immature system with low resilience and low stability that demands high rates of water renewal and aeration to maintain good water-quality levels for finfish production. The addition of oysters and macroalgae in the FOM treatment appeared to improve the water quality, since oysters controlled the excess of phytoplankton produced in the ponds by ingesting a fair amount of the phytoplankton, while the macroalgae helped in the absorption of excess nutrients and created a habitat for periphyton and associated macroinvertebrates. Some ecosystem attributes of the FOM ponds approached the values of the naturalized model, suggesting a possible path towards more sustainable aquaculture. COFASP/0003/2015 Interreg Atlantic Area project INTEGRATE EAPA_232/2016 project DIVERSIAQUA Mar2020 16-02-01-FMP-0066 UID/Multi/04326/2019/UID/Multi/04326/2020 info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
Gamito, Sofia Quental-Ferreira, H Parejo, A Aubin, J Christensen, V Cunha, ME |
author_facet |
Gamito, Sofia Quental-Ferreira, H Parejo, A Aubin, J Christensen, V Cunha, ME |
author_sort |
Gamito, Sofia |
title |
Integrated multi-trophic aquaculture systems: energy transfers and food web organization in coastal earthen ponds |
title_short |
Integrated multi-trophic aquaculture systems: energy transfers and food web organization in coastal earthen ponds |
title_full |
Integrated multi-trophic aquaculture systems: energy transfers and food web organization in coastal earthen ponds |
title_fullStr |
Integrated multi-trophic aquaculture systems: energy transfers and food web organization in coastal earthen ponds |
title_full_unstemmed |
Integrated multi-trophic aquaculture systems: energy transfers and food web organization in coastal earthen ponds |
title_sort |
integrated multi-trophic aquaculture systems: energy transfers and food web organization in coastal earthen ponds |
publisher |
Inter Research |
publishDate |
2020 |
url |
http://hdl.handle.net/10400.1/14919 https://doi.org/10.3354/aei00375 |
long_lat |
ENVELOPE(156.945,156.945,61.792,61.792) |
geographic |
Imta |
geographic_facet |
Imta |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_relation |
1869-215X http://hdl.handle.net/10400.1/14919 doi:10.3354/aei00375 |
op_rights |
openAccess http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3354/aei00375 |
container_title |
Aquaculture Environment Interactions |
container_volume |
12 |
container_start_page |
457 |
op_container_end_page |
470 |
_version_ |
1766394785216593920 |