Using under-ice hyperspectral transmittance to determine land-fast sea-ice algal biomass in Saroma-ko Lagoon, Hokkaido, Japan
Sea ice, which forms in polar and nonpolar areas, transmits light to ice-associated (sympagic) algal communities. To noninvasively study the distribution of sea-ice algae, empirical relations to estimate its biomass from under-ice hyperspectral irradiance have been developed in the Arctic and Antarc...
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Online Access: | https://doi.org/10.1017/aog.2020.69 http://ecite.utas.edu.au/142656 |
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ftunivtasecite:oai:ecite.utas.edu.au:142656 2023-05-15T13:29:48+02:00 Using under-ice hyperspectral transmittance to determine land-fast sea-ice algal biomass in Saroma-ko Lagoon, Hokkaido, Japan Wongpan, P Nomura, D Toyota, T Tanikawa, T Meiners, KM Ishino, T Tamura, TP Tozawa, M Nosaka, Y Hirawake, T Ooki, A Aoki, S 2020 application/pdf https://doi.org/10.1017/aog.2020.69 http://ecite.utas.edu.au/142656 en eng Int Glaciol Soc http://ecite.utas.edu.au/142656/1/142656 - Using under-ice hyperspectral transmittance to determine land-fast sea-ice algal.pdf http://ecite.utas.edu.au/142656/2/144436 - The Australian guide to nature-based methods for reducing risk.pdf http://dx.doi.org/10.1017/aog.2020.69 Wongpan, P and Nomura, D and Toyota, T and Tanikawa, T and Meiners, KM and Ishino, T and Tamura, TP and Tozawa, M and Nosaka, Y and Hirawake, T and Ooki, A and Aoki, S, Using under-ice hyperspectral transmittance to determine land-fast sea-ice algal biomass in Saroma-ko Lagoon, Hokkaido, Japan, Annals of Glaciology, 61, (83) pp. 454-463. ISSN 0260-3055 (2020) [Refereed Article] http://ecite.utas.edu.au/142656 Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) Refereed Article PeerReviewed 2020 ftunivtasecite https://doi.org/10.1017/aog.2020.69 2021-07-05T22:16:40Z Sea ice, which forms in polar and nonpolar areas, transmits light to ice-associated (sympagic) algal communities. To noninvasively study the distribution of sea-ice algae, empirical relations to estimate its biomass from under-ice hyperspectral irradiance have been developed in the Arctic and Antarctica but lack for nonpolar regions. This study examines relationships between normalised difference indices (NDI) calculated from hyperspectral transmittance and sympagic algal biomass in the nonpolar Saroma-ko Lagoon. We analysed physico-biogeochemical properties of snow and land-fast sea ice supporting 27 paired bio-optical measurements along three transects covering an area of over 250 m 250 m in February 2019. Snow depth (0.08 0.01 m) and ice-bottom brine volume fraction (0.21 0.02) showed low (0.06) and high (0.58) correlations with sea-ice core bottom section chlorophyll a (Chl. a ), respectively. Spatial analyses unveiled the patch size of sea-ice Chl. a to be ~65 m, which is in the same range reported from previous studies. A selected NDI (669, 596 nm) explained 63% of algal biomass variability. This reflects the bio-optical properties and environmental conditions of the lagoon that favour the wavelength pair in the orange/red part of the spectrum and suggests the necessity of a specific bio-optical relationship for Saroma-ko Lagoon. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctica Arctic ice algae ice core Sea ice eCite UTAS (University of Tasmania) Arctic Annals of Glaciology 61 83 454 463 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) |
spellingShingle |
Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) Wongpan, P Nomura, D Toyota, T Tanikawa, T Meiners, KM Ishino, T Tamura, TP Tozawa, M Nosaka, Y Hirawake, T Ooki, A Aoki, S Using under-ice hyperspectral transmittance to determine land-fast sea-ice algal biomass in Saroma-ko Lagoon, Hokkaido, Japan |
topic_facet |
Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) |
description |
Sea ice, which forms in polar and nonpolar areas, transmits light to ice-associated (sympagic) algal communities. To noninvasively study the distribution of sea-ice algae, empirical relations to estimate its biomass from under-ice hyperspectral irradiance have been developed in the Arctic and Antarctica but lack for nonpolar regions. This study examines relationships between normalised difference indices (NDI) calculated from hyperspectral transmittance and sympagic algal biomass in the nonpolar Saroma-ko Lagoon. We analysed physico-biogeochemical properties of snow and land-fast sea ice supporting 27 paired bio-optical measurements along three transects covering an area of over 250 m 250 m in February 2019. Snow depth (0.08 0.01 m) and ice-bottom brine volume fraction (0.21 0.02) showed low (0.06) and high (0.58) correlations with sea-ice core bottom section chlorophyll a (Chl. a ), respectively. Spatial analyses unveiled the patch size of sea-ice Chl. a to be ~65 m, which is in the same range reported from previous studies. A selected NDI (669, 596 nm) explained 63% of algal biomass variability. This reflects the bio-optical properties and environmental conditions of the lagoon that favour the wavelength pair in the orange/red part of the spectrum and suggests the necessity of a specific bio-optical relationship for Saroma-ko Lagoon. |
format |
Article in Journal/Newspaper |
author |
Wongpan, P Nomura, D Toyota, T Tanikawa, T Meiners, KM Ishino, T Tamura, TP Tozawa, M Nosaka, Y Hirawake, T Ooki, A Aoki, S |
author_facet |
Wongpan, P Nomura, D Toyota, T Tanikawa, T Meiners, KM Ishino, T Tamura, TP Tozawa, M Nosaka, Y Hirawake, T Ooki, A Aoki, S |
author_sort |
Wongpan, P |
title |
Using under-ice hyperspectral transmittance to determine land-fast sea-ice algal biomass in Saroma-ko Lagoon, Hokkaido, Japan |
title_short |
Using under-ice hyperspectral transmittance to determine land-fast sea-ice algal biomass in Saroma-ko Lagoon, Hokkaido, Japan |
title_full |
Using under-ice hyperspectral transmittance to determine land-fast sea-ice algal biomass in Saroma-ko Lagoon, Hokkaido, Japan |
title_fullStr |
Using under-ice hyperspectral transmittance to determine land-fast sea-ice algal biomass in Saroma-ko Lagoon, Hokkaido, Japan |
title_full_unstemmed |
Using under-ice hyperspectral transmittance to determine land-fast sea-ice algal biomass in Saroma-ko Lagoon, Hokkaido, Japan |
title_sort |
using under-ice hyperspectral transmittance to determine land-fast sea-ice algal biomass in saroma-ko lagoon, hokkaido, japan |
publisher |
Int Glaciol Soc |
publishDate |
2020 |
url |
https://doi.org/10.1017/aog.2020.69 http://ecite.utas.edu.au/142656 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Annals of Glaciology Antarc* Antarctica Arctic ice algae ice core Sea ice |
genre_facet |
Annals of Glaciology Antarc* Antarctica Arctic ice algae ice core Sea ice |
op_relation |
http://ecite.utas.edu.au/142656/1/142656 - Using under-ice hyperspectral transmittance to determine land-fast sea-ice algal.pdf http://ecite.utas.edu.au/142656/2/144436 - The Australian guide to nature-based methods for reducing risk.pdf http://dx.doi.org/10.1017/aog.2020.69 Wongpan, P and Nomura, D and Toyota, T and Tanikawa, T and Meiners, KM and Ishino, T and Tamura, TP and Tozawa, M and Nosaka, Y and Hirawake, T and Ooki, A and Aoki, S, Using under-ice hyperspectral transmittance to determine land-fast sea-ice algal biomass in Saroma-ko Lagoon, Hokkaido, Japan, Annals of Glaciology, 61, (83) pp. 454-463. ISSN 0260-3055 (2020) [Refereed Article] http://ecite.utas.edu.au/142656 |
op_doi |
https://doi.org/10.1017/aog.2020.69 |
container_title |
Annals of Glaciology |
container_volume |
61 |
container_issue |
83 |
container_start_page |
454 |
op_container_end_page |
463 |
_version_ |
1766003301350899712 |