Thermal insulation of the intertidal zone by the ice foot

Scrosati, Ricardo A.; Eckersley, Lindsay K.

doi:10.1016/j.seares.2007.08.003

Cited by 44 publications

(38 citation statements)

References 21 publications

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“…For instance, on Disko Island, the average microhabitat temperature in February was 9.1°C warmer than the atmospheric average (−3.40°C compared to −12.57°C). These temperature patterns are caused by the formation of intertidal ice and macroalgae that creates a protective layer during winter (Scrosati & Eckersley 2007 ) and between-fjord (meso-) scale to understand largescale species abundance, recruitment, settlement and population structures. This is supported by previous work demonstrating the intertidal zone is characterized by interactions of overlapping environmental factors including sub-zero air and water temperatures, annual primary productivity, pH, wave exposure, air exposure time, ice scour, solar radiation and rugosity (Helmuth et al 2006, Kroeker et al 2016).…”

Section: Effects Of Local-scale Variation In Environmental Driversmentioning

confidence: 99%

Rising air temperatures will increase intertidal mussel abundance in the Arctic

Thyrring¹,

Blicher²,

Sørensen³

et al. 2017

Mar. Ecol. Prog. Ser.

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Section: Effects Of Local-scale Variation In Environmental Driversmentioning

confidence: 99%

Rising air temperatures will increase intertidal mussel abundance in the Arctic

Thyrring¹,

Blicher²,

Sørensen³

et al. 2017

Mar. Ecol. Prog. Ser.

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“…In Greenland, the harsh Arctic climate challenges the intertidal mussels as in winter they may be exposed to extreme cold air temperatures (down to -25°C) twice daily if not covered by a stable ice foot (Scrosati and Eckersley 2007). The taxa distribution with a tendency to more M. trossulus in the inner fjord may be affected by the fact that the ice breaks up later in the spring in the inner fjord than at open sea, possibly affecting the time set for mussel reproduction and settlement of larvae.…”

Section: Characteristics Of Greenland Mytilus Populations and Interpomentioning

confidence: 99%

A first report on coexistence and hybridization of Mytilus trossulus and M. edulis mussels in Greenland

et al. 2015

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Semi-sessile Mytilus mussels are used as indicators of climate changes, but their geographic distribution is not sufficiently known in the Arctic. The aim of this study was to investigate the taxonomic status and genetic differentiation of Mytilus populations in a Northwest Greenlandic fjord at Maarmorilik, impacted by contaminations from a former mine. In this study, mussels were collected at three sites differing in exposure to environmental factors. A total of 54 polymorphic SNPs found in the Mytilus EST and DNA sequences analyzed were successfully applied to 256 individuals. The results provided the first evidence for the existence of M. trossulus in Greenland. The mussel from M. trossulus and M. edulis taxa are shown to coexist and hybridize in the fjord. The three studied sites were found to differ significantly in the distribution of taxa with a higher prevalence of M. trossulus in the inner fjord. The identified M. edulis 9 M. trossulus hybrids mostly had a hybrid index score of about 0.5, indicating a similar number of alleles characteristic for M. trossulus and M. edulis. There was a low number of backcrosses between 'pure' taxa and hybrids. This newly discovered hybrid zone between the two taxa is unique in comparison with the Canadian populations. As Mytilus mussels in Greenland hitherto have been regarded as the one taxon M. edulis, the results have importance for biogeography and future monitoring and environmental studies.

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“…At SS, maximum water velocity Lawrence occurs only at intervals of several years (Minchinton et al 1997). On the Gulf coast, sea ice forms in early winter and melts in late winter and early spring (Saucier et al 2003, Scrosati & Eckersley 2007. Measurement of the damage (angle of deformation) caused by sea ice to metallic cages affixed to the rocky substrate at SS indicated that ice scour is strong (mean angle of deformation of 90°) on wave-exposed areas and relatively mild (mean angle of 47°) on wavesheltered areas (Scrosati & Heaven 2006).…”

Section: Study Sitesmentioning

confidence: 99%