Data/hora: 09/06/2024 13:40:38

Provedor de dados: 	5	
País: 	France	
Título: 	Antarctic pack ice algal distribution: Floe-scale spatial variability and predictability from physical parameters	
Autores: 	Meiners, K. M.; Arndt, S.; Bestley, S.; Krumpen, T.; Ricker, Robert; Milnes, M.; Newbery, K.; Freier, U.; Jarman, S.; King, R.; Proud, R.; Kawaguchi, S.; Meyer, B.	
Data: 	2017-07	
Ano: 	2017	
Palavras-chave: 	Sea ice properties; Snow; Freeboard; Chlorophyll a; Ice algae; Biomass.	
Resumo: 	Antarctic pack ice serves as habitat for microalgae which contribute to Southern Ocean primary production and serve as important food source for pelagic herbivores. Ice algal biomass is highly patchy and remains severely undersampled by classical methods such as spatially restricted ice coring surveys. Here we provide an unprecedented view of ice algal biomass distribution, mapped (as chlorophyll a) in a 100 m by 100 m area of a Weddell Sea pack ice floe, using under-ice irradiance measurements taken with an instrumented remotely operated vehicle. We identified significant correlations (p &lt; 0.001) between algal biomass and concomitant in situ surface measurements of snow depth, ice thickness, and estimated sea ice freeboard levels using a statistical model. The model's explanatory power (r(2) = 0.30) indicates that these parameters alone may provide a first basis for spatial prediction of ice algal biomass, but parameterization of additional determinants is needed to inform more robust upscaling efforts.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00398/50957/51721.pdf

http://archimer.ifremer.fr/doc/00398/50957/51722.pdf

DOI:10.1002/2017GL074346

http://archimer.ifremer.fr/doc/00398/50957/	
Editor: 	Amer Geophysical Union	
Formato: 	application/pdf	
Fonte: 	Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2017-07 , Vol. 44 , N. 14 , P. 7382-7390	
Fonte: 	2017. Commonwealth of Australia.

info:eu-repo/semantics/openAccess

restricted use