Next Article in Journal
Comparison between Model Test and Three CFD Studies for a Benchmark Container Ship
Next Article in Special Issue
Photobiological Effects on Ice Algae of a Rapid Whole-Fjord Loss of Snow Cover during Spring Growth in Kangerlussuaq, a West Greenland Fjord
Previous Article in Journal
ROMS Based Hydrodynamic Modelling Focusing on the Belgian Part of the Southern North Sea
Previous Article in Special Issue
Spatial and Temporal Variability of Ice Algal Trophic Markers—With Recommendations about Their Application
Article

A Comparison of Decimeter Scale Variations of Physical and Photobiological Parameters in a Late Winter First-Year Sea Ice in Southwest Greenland

1
Arctic Research Centre, Aquatic Section, Department of Biology, Aarhus University, Ole Worms Allé 1, Build. 1135, 8000 Aarhus C, Denmark
2
Greenland Climate Research Centre (C/O Greenland Institute of Natural Resources), Kivioq 2, Box 570, 3900 Nuuk, Greenland
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2021, 9(1), 60; https://doi.org/10.3390/jmse9010060
Received: 9 November 2020 / Revised: 29 December 2020 / Accepted: 4 January 2021 / Published: 7 January 2021
(This article belongs to the Special Issue Ecology of Sea Ice Algae)
Small-scale variation in the physical and biological properties of sea ice was examined by collecting nine sea ice cores within 1 m2 in a land-fast first-year ice in southwest Greenland in late winter. Cores were sectioned in four segments and sea ice physical, biological, and photobiological parameters were measured. The main purpose was to explore the decimeter-scale horizontal and vertical variations in common sea ice parameters. ANOVA analyses revealed significant within-core variations for bulk salinity, brine salinity, brine volume, gas volume, chlorophyll a (Chl a), and the maximum light-limited photosynthetic efficiency (α). Only temperature and bulk salinity variations were significant between cores, and no significant variations were found within or between cores for other photobiological parameters. Power analyses were applied to determine the number of replicates needed to achieve a significance at p < 0.05 with sufficient power, and showed a minimum of four and preferably five replicate cores to detect the observed variability in this first-year ice. It is emphasized that these results only apply to this type of first-year ice in late winter/early spring, and that different variations may apply to other types of ice. View Full-Text
Keywords: sea ice; physical and photobiological parameters; Phyto-PAM; spatial variability; Greenland sea ice; physical and photobiological parameters; Phyto-PAM; spatial variability; Greenland
Show Figures

Figure 1

MDPI and ACS Style

Lund-Hansen, L.C.; Petersen, C.M.; Søgaard, D.H.; Sorrell, B.K. A Comparison of Decimeter Scale Variations of Physical and Photobiological Parameters in a Late Winter First-Year Sea Ice in Southwest Greenland. J. Mar. Sci. Eng. 2021, 9, 60. https://doi.org/10.3390/jmse9010060

AMA Style

Lund-Hansen LC, Petersen CM, Søgaard DH, Sorrell BK. A Comparison of Decimeter Scale Variations of Physical and Photobiological Parameters in a Late Winter First-Year Sea Ice in Southwest Greenland. Journal of Marine Science and Engineering. 2021; 9(1):60. https://doi.org/10.3390/jmse9010060

Chicago/Turabian Style

Lund-Hansen, Lars C., Clara M. Petersen, Dorte H. Søgaard, and Brian K. Sorrell. 2021. "A Comparison of Decimeter Scale Variations of Physical and Photobiological Parameters in a Late Winter First-Year Sea Ice in Southwest Greenland" Journal of Marine Science and Engineering 9, no. 1: 60. https://doi.org/10.3390/jmse9010060

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop