Upscaling cultivation of Saccharina latissima on net or line systems; comparing biomass yields and nutrient extraction potentials
Production of sugar kelp, Saccharina latissima, has the potential of extracting nutrients and carbon from the seawater and returning it to land as a bioresource. The production thereby acts as an emission capture and utilization instrument contributing to mitigation of eutrophication and climate cha...
Published in: | Frontiers in Marine Science |
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Language: | English |
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2023
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Online Access: | https://pure.au.dk/portal/da/publications/upscaling-cultivation-of-saccharina-latissima-on-net-or-line-systems-comparing-biomass-yields-and-nutrient-extraction-potentials(2a58ba37-7a4e-468b-b57b-b71c0a5d4586).html https://doi.org/10.3389/fmars.2023.992179 |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/2a58ba37-7a4e-468b-b57b-b71c0a5d4586 2023-11-05T03:41:53+01:00 Upscaling cultivation of Saccharina latissima on net or line systems; comparing biomass yields and nutrient extraction potentials Boderskov, Teis Rasmussen, Michael Bo Bruhn, Annette 2023-02 https://pure.au.dk/portal/da/publications/upscaling-cultivation-of-saccharina-latissima-on-net-or-line-systems-comparing-biomass-yields-and-nutrient-extraction-potentials(2a58ba37-7a4e-468b-b57b-b71c0a5d4586).html https://doi.org/10.3389/fmars.2023.992179 eng eng info:eu-repo/semantics/openAccess Boderskov , T , Rasmussen , M B & Bruhn , A 2023 , ' Upscaling cultivation of Saccharina latissima on net or line systems; comparing biomass yields and nutrient extraction potentials ' , Frontiers in Marine Science , vol. 10 , 992179 . https://doi.org/10.3389/fmars.2023.992179 biofouling infrastructure design lines nets nitrogen phosphorous production sugar kelp (Saccharina latissima) article 2023 ftuniaarhuspubl https://doi.org/10.3389/fmars.2023.992179 2023-10-11T22:59:00Z Production of sugar kelp, Saccharina latissima, has the potential of extracting nutrients and carbon from the seawater and returning it to land as a bioresource. The production thereby acts as an emission capture and utilization instrument contributing to mitigation of eutrophication and climate change. To achieve higher biomass yields improving the effects on climate and environment, and the economic feasibility of the production, cultivation techniques need to be optimized. In Denmark so far, S. latissima production yields have been lower than yields documented from Norway and the Faroe Islands. Use of alternative cultivation infrastructure designs with a higher line density per area, and better understanding the effects of annual and seasonal variations in abiotic parameters on growth, could lead the way towards a future higher yield of the S. latissima production. In this study, S. latissima was cultivated in a Danish commercial scale cultivation site for two consecutive seasons comparing the yields of different cultivation techniques: cultivation on nets and a multi-layer single line system, while also testing the possibility of coppicing the blades instead of applying a full harvest. Biomass yields of 5.0 - 6.8 kg FW m -1 cultivation line year -1 , and 10.9 – 30.4 kg FW m -2 net structure were achieved. Biomass production, nutrient and carbon extraction potentials up to 91.3 t FW, 110 kg N, 13.1 kg P and 5.1 t C ha -1 were obtained using net cultivation systems and a 1.5 years growth period. Depth of cultivation had a significant effect on yield, but no effect on dry matter, C, N or P contents of S. latissima in a multi-layered line system. Biomass yields from the same system and site varied with a factor of four between years. The use of coppicing enabled multiple harvests of S. latissima, providing however biomass of reduced quality in the second year. This study demonstrates that the production yield of S. latissima can be increased by optimizing cultivation infrastructure, and indicates that net ... Article in Journal/Newspaper Faroe Islands Aarhus University: Research Frontiers in Marine Science 10 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
biofouling infrastructure design lines nets nitrogen phosphorous production sugar kelp (Saccharina latissima) |
spellingShingle |
biofouling infrastructure design lines nets nitrogen phosphorous production sugar kelp (Saccharina latissima) Boderskov, Teis Rasmussen, Michael Bo Bruhn, Annette Upscaling cultivation of Saccharina latissima on net or line systems; comparing biomass yields and nutrient extraction potentials |
topic_facet |
biofouling infrastructure design lines nets nitrogen phosphorous production sugar kelp (Saccharina latissima) |
description |
Production of sugar kelp, Saccharina latissima, has the potential of extracting nutrients and carbon from the seawater and returning it to land as a bioresource. The production thereby acts as an emission capture and utilization instrument contributing to mitigation of eutrophication and climate change. To achieve higher biomass yields improving the effects on climate and environment, and the economic feasibility of the production, cultivation techniques need to be optimized. In Denmark so far, S. latissima production yields have been lower than yields documented from Norway and the Faroe Islands. Use of alternative cultivation infrastructure designs with a higher line density per area, and better understanding the effects of annual and seasonal variations in abiotic parameters on growth, could lead the way towards a future higher yield of the S. latissima production. In this study, S. latissima was cultivated in a Danish commercial scale cultivation site for two consecutive seasons comparing the yields of different cultivation techniques: cultivation on nets and a multi-layer single line system, while also testing the possibility of coppicing the blades instead of applying a full harvest. Biomass yields of 5.0 - 6.8 kg FW m -1 cultivation line year -1 , and 10.9 – 30.4 kg FW m -2 net structure were achieved. Biomass production, nutrient and carbon extraction potentials up to 91.3 t FW, 110 kg N, 13.1 kg P and 5.1 t C ha -1 were obtained using net cultivation systems and a 1.5 years growth period. Depth of cultivation had a significant effect on yield, but no effect on dry matter, C, N or P contents of S. latissima in a multi-layered line system. Biomass yields from the same system and site varied with a factor of four between years. The use of coppicing enabled multiple harvests of S. latissima, providing however biomass of reduced quality in the second year. This study demonstrates that the production yield of S. latissima can be increased by optimizing cultivation infrastructure, and indicates that net ... |
format |
Article in Journal/Newspaper |
author |
Boderskov, Teis Rasmussen, Michael Bo Bruhn, Annette |
author_facet |
Boderskov, Teis Rasmussen, Michael Bo Bruhn, Annette |
author_sort |
Boderskov, Teis |
title |
Upscaling cultivation of Saccharina latissima on net or line systems; comparing biomass yields and nutrient extraction potentials |
title_short |
Upscaling cultivation of Saccharina latissima on net or line systems; comparing biomass yields and nutrient extraction potentials |
title_full |
Upscaling cultivation of Saccharina latissima on net or line systems; comparing biomass yields and nutrient extraction potentials |
title_fullStr |
Upscaling cultivation of Saccharina latissima on net or line systems; comparing biomass yields and nutrient extraction potentials |
title_full_unstemmed |
Upscaling cultivation of Saccharina latissima on net or line systems; comparing biomass yields and nutrient extraction potentials |
title_sort |
upscaling cultivation of saccharina latissima on net or line systems; comparing biomass yields and nutrient extraction potentials |
publishDate |
2023 |
url |
https://pure.au.dk/portal/da/publications/upscaling-cultivation-of-saccharina-latissima-on-net-or-line-systems-comparing-biomass-yields-and-nutrient-extraction-potentials(2a58ba37-7a4e-468b-b57b-b71c0a5d4586).html https://doi.org/10.3389/fmars.2023.992179 |
genre |
Faroe Islands |
genre_facet |
Faroe Islands |
op_source |
Boderskov , T , Rasmussen , M B & Bruhn , A 2023 , ' Upscaling cultivation of Saccharina latissima on net or line systems; comparing biomass yields and nutrient extraction potentials ' , Frontiers in Marine Science , vol. 10 , 992179 . https://doi.org/10.3389/fmars.2023.992179 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmars.2023.992179 |
container_title |
Frontiers in Marine Science |
container_volume |
10 |
_version_ |
1781698579853737984 |