Towards improved estimates of sea-ice algal biomass: experimental assessment of hyperspectral imaging cameras for under-ice studies
Ice algae are a key component in polar marine food webs and have an active role in large-scale biogeochemical cycles. They remain extremely under-sampled due to the coarse nature of traditional point sampling methods compounded by the general logistical limitations of surveying in polar regions. Thi...
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Online Access: | https://eprints.utas.edu.au/26123/ https://eprints.utas.edu.au/26123/2/116484%20final.pdf https://doi.org/10.1017/aog.2017.6 |
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ftunivtasmania:oai:eprints.utas.edu.au:26123 2023-05-15T13:29:48+02:00 Towards improved estimates of sea-ice algal biomass: experimental assessment of hyperspectral imaging cameras for under-ice studies Cimoli, E Lucieer, A Meiners, KM Lund-Hansen, LC Kennedy, FC Martin, A McMinn, A Lucieer, V 2017 application/pdf https://eprints.utas.edu.au/26123/ https://eprints.utas.edu.au/26123/2/116484%20final.pdf https://doi.org/10.1017/aog.2017.6 en eng Int Glaciol Soc https://eprints.utas.edu.au/26123/2/116484%20final.pdf Cimoli, E orcid:0000-0001-7964-2716 , Lucieer, A orcid:0000-0002-9468-4516 , Meiners, KM, Lund-Hansen, LC, Kennedy, FC orcid:0000-0003-1796-0764 , Martin, A orcid:0000-0001-8260-5529 , McMinn, A orcid:0000-0002-2133-3854 and Lucieer, V orcid:0000-0001-7531-5750 2017 , 'Towards improved estimates of sea-ice algal biomass: experimental assessment of hyperspectral imaging cameras for under-ice studies' , Annals of Glaciology, vol. 58, no. 75 pt1 , pp. 68-77 , doi:10.1017/aog.2017.6 <http://dx.doi.org/10.1017/aog.2017.6>. sea ice Antarctica hyperspectral imaging remote sensing ice algae ice tank under-ice environment Article PeerReviewed 2017 ftunivtasmania https://doi.org/10.1017/aog.2017.6 2021-09-06T22:17:49Z Ice algae are a key component in polar marine food webs and have an active role in large-scale biogeochemical cycles. They remain extremely under-sampled due to the coarse nature of traditional point sampling methods compounded by the general logistical limitations of surveying in polar regions. This study provides a first assessment of hyperspectral imaging as an under-ice remote-sensing method to capture sea-ice algae biomass spatial variability at the ice/water interface. Ice-algal cultures were inoculated in a unique inverted sea-ice simulation tank at increasing concentrations over designated cylinder enclosures and sparsely across the ice/water interface. Hyperspectral images of the sea ice were acquired with a pushbroom sensor attaining 0.9 mm square pixel spatial resolution for three different spectral resolutions (1.7, 3.4, 6.7 nm). Image analysis revealed biomass distribution matching the inoculated chlorophyll a concentrations within each cylinder. While spectral resolutions >6 nm hindered biomass differentiation, 1.7 and 3.4 nm were able to resolve spatial variation in ice algal biomass implying a coherent sensor selection. The inverted ice tank provided a suitable sea-ice analogue platform for testing key parameters of the methodology. The results highlight the potential of hyperspectral imaging to capture sea-ice algal biomass variability at unprecedented scales in a non-invasive way. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctica ice algae Sea ice University of Tasmania: UTas ePrints Annals of Glaciology 58 75pt1 68 77 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
sea ice Antarctica hyperspectral imaging remote sensing ice algae ice tank under-ice environment |
spellingShingle |
sea ice Antarctica hyperspectral imaging remote sensing ice algae ice tank under-ice environment Cimoli, E Lucieer, A Meiners, KM Lund-Hansen, LC Kennedy, FC Martin, A McMinn, A Lucieer, V Towards improved estimates of sea-ice algal biomass: experimental assessment of hyperspectral imaging cameras for under-ice studies |
topic_facet |
sea ice Antarctica hyperspectral imaging remote sensing ice algae ice tank under-ice environment |
description |
Ice algae are a key component in polar marine food webs and have an active role in large-scale biogeochemical cycles. They remain extremely under-sampled due to the coarse nature of traditional point sampling methods compounded by the general logistical limitations of surveying in polar regions. This study provides a first assessment of hyperspectral imaging as an under-ice remote-sensing method to capture sea-ice algae biomass spatial variability at the ice/water interface. Ice-algal cultures were inoculated in a unique inverted sea-ice simulation tank at increasing concentrations over designated cylinder enclosures and sparsely across the ice/water interface. Hyperspectral images of the sea ice were acquired with a pushbroom sensor attaining 0.9 mm square pixel spatial resolution for three different spectral resolutions (1.7, 3.4, 6.7 nm). Image analysis revealed biomass distribution matching the inoculated chlorophyll a concentrations within each cylinder. While spectral resolutions >6 nm hindered biomass differentiation, 1.7 and 3.4 nm were able to resolve spatial variation in ice algal biomass implying a coherent sensor selection. The inverted ice tank provided a suitable sea-ice analogue platform for testing key parameters of the methodology. The results highlight the potential of hyperspectral imaging to capture sea-ice algal biomass variability at unprecedented scales in a non-invasive way. |
format |
Article in Journal/Newspaper |
author |
Cimoli, E Lucieer, A Meiners, KM Lund-Hansen, LC Kennedy, FC Martin, A McMinn, A Lucieer, V |
author_facet |
Cimoli, E Lucieer, A Meiners, KM Lund-Hansen, LC Kennedy, FC Martin, A McMinn, A Lucieer, V |
author_sort |
Cimoli, E |
title |
Towards improved estimates of sea-ice algal biomass: experimental assessment of hyperspectral imaging cameras for under-ice studies |
title_short |
Towards improved estimates of sea-ice algal biomass: experimental assessment of hyperspectral imaging cameras for under-ice studies |
title_full |
Towards improved estimates of sea-ice algal biomass: experimental assessment of hyperspectral imaging cameras for under-ice studies |
title_fullStr |
Towards improved estimates of sea-ice algal biomass: experimental assessment of hyperspectral imaging cameras for under-ice studies |
title_full_unstemmed |
Towards improved estimates of sea-ice algal biomass: experimental assessment of hyperspectral imaging cameras for under-ice studies |
title_sort |
towards improved estimates of sea-ice algal biomass: experimental assessment of hyperspectral imaging cameras for under-ice studies |
publisher |
Int Glaciol Soc |
publishDate |
2017 |
url |
https://eprints.utas.edu.au/26123/ https://eprints.utas.edu.au/26123/2/116484%20final.pdf https://doi.org/10.1017/aog.2017.6 |
genre |
Annals of Glaciology Antarc* Antarctica ice algae Sea ice |
genre_facet |
Annals of Glaciology Antarc* Antarctica ice algae Sea ice |
op_relation |
https://eprints.utas.edu.au/26123/2/116484%20final.pdf Cimoli, E orcid:0000-0001-7964-2716 , Lucieer, A orcid:0000-0002-9468-4516 , Meiners, KM, Lund-Hansen, LC, Kennedy, FC orcid:0000-0003-1796-0764 , Martin, A orcid:0000-0001-8260-5529 , McMinn, A orcid:0000-0002-2133-3854 and Lucieer, V orcid:0000-0001-7531-5750 2017 , 'Towards improved estimates of sea-ice algal biomass: experimental assessment of hyperspectral imaging cameras for under-ice studies' , Annals of Glaciology, vol. 58, no. 75 pt1 , pp. 68-77 , doi:10.1017/aog.2017.6 <http://dx.doi.org/10.1017/aog.2017.6>. |
op_doi |
https://doi.org/10.1017/aog.2017.6 |
container_title |
Annals of Glaciology |
container_volume |
58 |
container_issue |
75pt1 |
container_start_page |
68 |
op_container_end_page |
77 |
_version_ |
1766003174548701184 |