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Piepenburg, Dieter; Gutt, Julian (2019): Spatial distribution patterns of the mega-epibenthos on the continental shelves off the northern Antarctic Peninsula studied from OFOS seabed images taken during POLARSTERN cruise ANT-XXIX/3 (PS81) 2013. PANGAEA, https://doi.org/10.1594/PANGAEA.897047, Supplement to: Gutt, Julian; Arndt, Janina; Kraan, Casper; Dorschel, Boris; Schröder, Michael; Bracher, Astrid; Piepenburg, Dieter (2019): Benthic communities and their drivers: A spatial analysis off the Antarctic Peninsula. Limnology and Oceanography, 64(6), 2341-2357, https://doi.org/10.1002/lno.11187

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Abstract:
The epibenthos of the Southern Ocean shelves plays a significant role in marine ecosystem functioning, including biodiversity processes, but information on its composition, distribution and ecological drivers is still scarce. Here, we report results of a first study on the relationship between the spatial patterns of 18 systematic or functional groups and environmental factors, conducted in the waters off the northern Antarctic Peninsula during RV Polarstern cruise XXIX/3 (PS81) in January-March 2013. To comparatively address this issue at three nested spatial scales, seabed imaging surveys were performed along 28 photographic transects of 2 km length each at water depths from 70 to 770 m in three ecoregions (northwestern Weddell Sea, southern Bransfield Strait and southern Drake Passage), which differ in general environmental setting, primarily oceanographic characteristics and sea-ice dynamics. At a regional (100-km) scale, epibenthic assemblages differed significantly from each other in all three ecoregions, whereas at an intermediate 10-km scale, differences among depth-related habitat types (bank, upper slope, lower slope, deep/canyon) were less pronounced. These regional and intermediate spatial patterns were superimposed by a marked small-scale (10-m) patchiness of epibenthic distribution within the 2-km transects. Obvious correlation between mega-epibenthos and environmental factors (e.g., temperature, salinity, oxygen, sea-ice cover, seabed ruggedness) was found especially for large scales of >2 km.
Related to:
Bracher, Astrid; Huntemann, Marcus (2016): Chlorophyll-a concentration and sea ice concentration at OFOS stations during POLARSTERN cruise ANT-XXIX/3 derived from the merged daily Full Product Set (FPS) of the GlobColour Archive. PANGAEA, https://doi.org/10.1594/PANGAEA.849286
Dorschel, Boris (2016): Benthic terrain modeler sea-bed classification for OFOS stations during POLARSTERN cruise ANT-XXIX/3. PANGAEA, https://doi.org/10.1594/PANGAEA.849287
Schröder, Michael; Wisotzki, Andreas; van Caspel, Mathias (2016): Physical oceanography measured on water bottle samples related to OFOS stations during POLARSTERN cruise ANT-XXIX/3. PANGAEA, https://doi.org/10.1594/PANGAEA.849281
Segelken-Voigt, Alexandra; Bracher, Astrid; Dorschel, Boris; Gutt, Julian; Huneke, Wilma; Link, Heike; Piepenburg, Dieter (2016): Spatial distribution patterns of ascidians (Ascidiacea: Tunicata) in combination with information on bathymetry, oceanography, chlorophyll-a, and sea-ice on the continental shelves off the northern Antarctic Peninsula during POLARSTERN cruise ANT-XXIX/3. PANGAEA, https://doi.org/10.1594/PANGAEA.849291
Segelken-Voigt, Alexandra; Gutt, Julian (2016): Spatial distribution patterns of ascidians (Ascidiacea: Tunicata) on the continental shelves off the northern Antarctic Peninsula studies from OFOS sea-bed images from POLARSTERN cruise ANT-XXIX/3. PANGAEA, https://doi.org/10.1594/PANGAEA.849289
Coverage:
Median Latitude: -62.953808 * Median Longitude: -57.787249 * South-bound Latitude: -64.008246 * West-bound Longitude: -61.232206 * North-bound Latitude: -61.936088 * East-bound Longitude: -54.100406
Date/Time Start: 2013-01-26T11:42:14 * Date/Time End: 2013-03-12T21:00:36
Minimum Elevation: -784.0 m * Maximum Elevation: -28.7 m
Event(s):
PS81/116-3 * Latitude Start: -62.564749 * Longitude Start: -56.401008 * Latitude End: -62.562786 * Longitude End: -56.471238 * Date/Time Start: 2013-01-26T11:40:03 * Date/Time End: 2013-01-26T15:36:08 * Elevation Start: -201.2 m * Elevation End: -249.0 m * Location: Scotia Sea * Campaign: ANT-XXIX/3 (PS81) * Basis: Polarstern * Method/Device: Ocean Floor Observation System (OFOS)
PS81/118-3 * Latitude Start: -62.450518 * Longitude Start: -56.283971 * Latitude End: -62.417034 * Longitude End: -56.289294 * Date/Time Start: 2013-01-27T08:25:11 * Date/Time End: 2013-01-27T12:25:00 * Elevation Start: -418.5 m * Elevation End: -447.9 m * Location: Scotia Sea * Campaign: ANT-XXIX/3 (PS81) * Basis: Polarstern * Method/Device: Ocean Floor Observation System (OFOS)
PS81/160-1 * Latitude Start: -63.169739 * Longitude Start: -54.116816 * Latitude End: -63.183035 * Longitude End: -54.097307 * Date/Time Start: 2013-02-08T16:36:47 * Date/Time End: 2013-02-08T20:14:28 * Elevation Start: -214.9 m * Elevation End: -248.1 m * Location: Weddell Sea * Campaign: ANT-XXIX/3 (PS81) * Basis: Polarstern * Method/Device: Ocean Floor Observation System (OFOS)
Comment:
For most animal groups, % sea-floor coverage values were assessed as such (columns 13-31), with the exception of Ophiuroidea, for which first abundance-class values were determined (column 32) that were then converted to % sea-floor coverage values (column 25), see Gutt et al. (submitted)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventGutt, Julian
2Station labelStationGutt, Julianwhen different from event Nachtigaller pseudo stations
3File nameFile nameGutt, Julian
4Uniform resource locator/link to imageURL imageGutt, Julian
5Station labelStationGutt, Julianrelated to CTD station
6DATE/TIMEDate/TimeGutt, JulianGeocode
7LATITUDELatitudeGutt, JulianGeocode
8LONGITUDELongitudeGutt, JulianGeocode
9Depth, bathymetricBathy depthmGutt, JulianPODAS
10LengthlmGutt, JulianHoriontal length of captured area
11LengthlmGutt, JulianVertical length of captured area
12AreaAream2Gutt, JulianCaptured area
13Demospongiae, coverDemospongiae cov%Gutt, Julian
14Hexactinellida, coverHexactinellida cov%Gutt, Julian
15Gorgonaria, coverGorgonaria cov%Gutt, Julian
16Hydrozoa, coverHydrozoa cov%Gutt, Julian
17Anthozoa, coverAnthozoa cov%Gutt, Julian
18Polychaeta, mobile, coverPolychaeta mobile cov%Gutt, Julian
19Bryozoa, coverBryozoa cov%Gutt, Julian
20Holothuroidea, filter-feeding, coverHolothuroidea filt cov%Gutt, Julian
21Holothuroidea, deposit-feeding, coverHolothuroidea dep cov%Gutt, Julian
22Echinoidea, coverEchinoidea cov%Gutt, Julian
23Crinoidea, coverCrinoidea cov%Gutt, Julian
24Asteroidea, coverAsteroidea cov%Gutt, Julian
25Ophiuroidea, coverOphiuroidea cov%Gutt, Julian
26Ascidiacea, solitary, coverAscidiacea sol cov%Gutt, Julian
27Ascidiacea, colonial, coverAscidiacea colcov%Gutt, Julian
28Hemichordata, coverHemichordata cov%Gutt, Julian
29Infauna indicator, coverInfauna cov%Gutt, Julian
30Epifauna, other, coverEpifauna oth cov%Gutt, Julian
31Fauna, total, coverFauna tot cov%Gutt, Julian
32Ophiuroidea, abundanceOphiuroidea abundGutt, Julian
33Hard substrat, classesHard substratGutt, Julianclassification for the abundance of hard substrata in % sea-floor coverage; centres of classes in parentheses: 0% (0), 0%-5% (1), 5%-30% (2), 30%-100% (3).
Size:
81179 data points

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