Benthic Habitats Around Iceland Investigated During the IceAGE Expeditions

Meißner, Karin; Brenke, Nils; Svavarsson, Jörundur

doi:10.2478/popore-2014-0016

Cited by 12 publications

(16 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The north and north-eastern areas experience mixing of several water masses (Meißner et al 2014). NICC transports the Atlantic water which loses heat here.…”

Section: Introductionmentioning

confidence: 99%

A tip of the iceberg—Pseudotanaidae (Tanaidacea) diversity in the North Atlantic

2018

View full text Add to dashboard Cite

During two IceAGE expeditions, a large collection of Tanaidacea was gathered from the shelf down to the slope (213−2750 m) in six areas off Iceland-the Irminger Basin, the Iceland Basin, the Norwegian Sea, the Denmark Strait, the Iceland-Faroe Ridge, and the Norwegian Channel. In this collection, members of the family Pseudotanaidae were most numerous component. We examined 40 samples collected with different gears (e.g., EBS, VVG. GKG), in which 323 pseudotanaid individuals were counted and covered a total depth from 213.9 to 2746.4 m. Morphological identification of the material has revealed the presence of five species: Akanthinotanais cf. longipes, Mystriocentrus biho sp. n. Pseudotanais misericorde sp. n., P. svavarssoni sp. n., and P. sigrunis sp. n. The description of the four new species has been presented in the paper and a rank of the subgenus Akanthinotanais is elevated to a genus rank. A large group of morphologically almost identical specimens, similar with P. svavarssoni sp. n. from a wide depth range and from various areas off Iceland was discriminated to species by applying morphometric methods; one distinct species (P. svavarssoni sp. n.) and complex of presumably cryptic species the species was discovered. Based on current data and literature records, similarity among fauna of Pseudotanaidae was assessed with applying Bray-Curtis formula. As results, potential zoogeographic regions in the North Atlantic have been distinguished.

show abstract

“…The north and north-eastern areas experience mixing of several water masses (Meißner et al 2014). NICC transports the Atlantic water which loses heat here.…”

Section: Introductionmentioning

confidence: 99%

A tip of the iceberg—Pseudotanaidae (Tanaidacea) diversity in the North Atlantic

2018

View full text Add to dashboard Cite

show abstract

“…Brix et al (in press) have reported that at the same stations, high numbers of the isopod family Arcturidae are recorded and these are also regarded as having a sedentary lifestyle, associated with other sessile invertebrates. A study of benthic habitats around Iceland revealed very homogenous sediments in the Iceland Basin, dominated by sandy muds occasionally accompanied by a small proportion of gravel (Mei?ner et al 2014). However, the region is known to have very productive surface waters and high total organic carbon content in the sediments was observed, which may explain the high abundances of suspension feeding peracarids in our study.…”

Section: Resultsmentioning

confidence: 99%

“…(Grey spotted lines indicate the samples that cannot be significantly differentiated by SIMPROF.) Regions are named based on the habitats defined by Meißner et al (2014).…”

Section: Discussionmentioning

confidence: 99%

Amphipod family distributions around Iceland

Brix¹,

Lörz²,

Jażdżewska³

et al. 2018

View full text Add to dashboard Cite

Amphipod crustaceans were collected at all 55 stations sampled with an epibenthic sledge during two IceAGE expeditions (Icelandic marine Animals: Genetics and Ecology) in 2011 and 2013. In total, 34 amphipod families and three superfamilies were recorded in the samples. Distribution maps are presented for each taxon along with a summary of the regional taxonomy for the group. Statistical analyses based on presence/absence data revealed a pattern of family distributions that correlated with sampling depth. Clustering according to the geographic location of the stations (northernmost North Atlantic Sea and Arctic Ocean) can also be observed. IceAGE data for the Amphilochidae and Oedicerotidae were analysed on species level; in case of the Amphilochidae they were compared to the findings from a previous Icelandic benthic survey, BIOICE (Benthic Invertebrates of Icelandic waters), which also identified a high abundance of amphipod fauna.

show abstract

“…Here, the directional flow of local currents causes nutrients to accumulate in deeper waters (Meißner et al 2014 ). Hence, Icelandic deep-sea habitats are relatively rich in organic matter, in contrast to benthic habitats located in the open ocean (Meißner et al 2014 ). As food supply in our study area does not significantly decline with depth (Meißner et al 2014 Figs.…”

Section: Introductionmentioning

confidence: 99%

Bryozoan zooid size variation across a bathymetric gradient: a case study from the Icelandic shelf and continental slope

et al. 2017

View full text Add to dashboard Cite

Body size is one of the most important biological characters, as it defines many aspects of organismal functioning at the individual and community level. As body size controls many ecological aspects of species, it is often used as a proxy for the status of the ecosystem. So far no consistent mechanism driving size shift has been proposed. In this study, we investigated bathymetric variability in zooid’s size and shape in aquatic colonial animals, Bryozoa. Although the response of bryozoan zooid size to temperature or food concentration has been experimentally proven, the effects of natural environmental variability on marine bryozoan populations has been much less explored. The presented investigation is aimed to assess the bathymetric patterns and environmental drivers of bryozoan zooid size on continental shelf and slope of southern Iceland. 196 colonies of 11 species representing different colonial forms and taxonomic groups were selected for zooid characteristics measurements. A pattern of depth-related increase in zooid size was documented for Bicellarina alderi, Chartella barleei and Sarsiflustra abyssicola, no statistically significant effects were detected for the other eight species. Two species Bicellarina alderi and Caberea ellisii had significantly longer zooids in deeper water, shape of the remaining species did not change along the bathymetric gradient. Intercolonial coefficient of variation in zooid size did not change across the depth gradient. Temperature differences along studied depth could be responsible for the observed pattern.Electronic supplementary materialThe online version of this article (doi:10.1007/s00227-017-3231-9) contains supplementary material, which is available to authorized users.

show abstract

Benthic Habitats Around Iceland Investigated During the IceAGE Expeditions

Cited by 12 publications

References 31 publications

A tip of the iceberg—Pseudotanaidae (Tanaidacea) diversity in the North Atlantic

A tip of the iceberg—Pseudotanaidae (Tanaidacea) diversity in the North Atlantic

Amphipod family distributions around Iceland

Bryozoan zooid size variation across a bathymetric gradient: a case study from the Icelandic shelf and continental slope

Contact Info

Product

Resources

About