Cold-Water Coral Distributions in the Drake Passage Area from Towed Camera Observations – Initial Interpretations
Seamounts are unique deep-sea features that create habitats thought to have high levels of endemic fauna, productive fisheries and benthic communities vulnerable to anthropogenic impacts. Many seamounts are isolated features, occurring in the high seas, where access is limited and thus biological da...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.293.5485 2023-05-15T13:48:52+02:00 Cold-Water Coral Distributions in the Drake Passage Area from Towed Camera Observations – Initial Interpretations Rhian G. Waller Kathryn M. Scanlon Laura F. Robinson The Pennsylvania State University CiteSeerX Archives application/zip http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.293.5485 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.293.5485 Metadata may be used without restrictions as long as the oai identifier remains attached to it. ftp://ftp.ncbi.nlm.nih.gov/pub/pmc/53/e3/PLoS_One_2011_Jan_25_6(1)_e16153.tar.gz text ftciteseerx 2016-01-07T21:41:07Z Seamounts are unique deep-sea features that create habitats thought to have high levels of endemic fauna, productive fisheries and benthic communities vulnerable to anthropogenic impacts. Many seamounts are isolated features, occurring in the high seas, where access is limited and thus biological data scarce. There are numerous seamounts within the Drake Passage (Southern Ocean), yet high winds, frequent storms and strong currents make seafloor sampling particularly difficult. As a result, few attempts to collect biological data have been made, leading to a paucity of information on benthic habitats or fauna in this area, particularly those on primarily hard-bottom seamounts and ridges. During a research cruise in 2008 six locations were examined (two on the Antarctic margin, one on the Shackleton Fracture Zone, and three on seamounts within the Drake Passage), using a towed camera with onboard instruments to measure conductivity, temperature, depth and turbidity. Dominant fauna and bottom type were categorized from 200 randomized photos from each location. Coldwater corals were present in high numbers in habitats both on the Antarctic margin and on the current swept seamounts of the Drake Passage, though the diversity of orders varied. Though the Scleractinia (hard corals) were abundant on the sedimented margin, they were poorly represented in the primarily hard-bottom areas of the central Drake Passage. The two seamount sites and the Shackleton Fracture Zone showed high numbers of stylasterid (lace) and alcyonacean (soft) corals, as well as large numbers of sponges. Though data are preliminary, the geological and environmental variability (particularly Text Antarc* Antarctic Drake Passage Southern Ocean Unknown Antarctic Drake Passage Shackleton Shackleton Fracture Zone ENVELOPE(-60.000,-60.000,-60.000,-60.000) Southern Ocean The Antarctic |
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ftciteseerx |
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English |
description |
Seamounts are unique deep-sea features that create habitats thought to have high levels of endemic fauna, productive fisheries and benthic communities vulnerable to anthropogenic impacts. Many seamounts are isolated features, occurring in the high seas, where access is limited and thus biological data scarce. There are numerous seamounts within the Drake Passage (Southern Ocean), yet high winds, frequent storms and strong currents make seafloor sampling particularly difficult. As a result, few attempts to collect biological data have been made, leading to a paucity of information on benthic habitats or fauna in this area, particularly those on primarily hard-bottom seamounts and ridges. During a research cruise in 2008 six locations were examined (two on the Antarctic margin, one on the Shackleton Fracture Zone, and three on seamounts within the Drake Passage), using a towed camera with onboard instruments to measure conductivity, temperature, depth and turbidity. Dominant fauna and bottom type were categorized from 200 randomized photos from each location. Coldwater corals were present in high numbers in habitats both on the Antarctic margin and on the current swept seamounts of the Drake Passage, though the diversity of orders varied. Though the Scleractinia (hard corals) were abundant on the sedimented margin, they were poorly represented in the primarily hard-bottom areas of the central Drake Passage. The two seamount sites and the Shackleton Fracture Zone showed high numbers of stylasterid (lace) and alcyonacean (soft) corals, as well as large numbers of sponges. Though data are preliminary, the geological and environmental variability (particularly |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Rhian G. Waller Kathryn M. Scanlon Laura F. Robinson |
spellingShingle |
Rhian G. Waller Kathryn M. Scanlon Laura F. Robinson Cold-Water Coral Distributions in the Drake Passage Area from Towed Camera Observations – Initial Interpretations |
author_facet |
Rhian G. Waller Kathryn M. Scanlon Laura F. Robinson |
author_sort |
Rhian G. Waller |
title |
Cold-Water Coral Distributions in the Drake Passage Area from Towed Camera Observations – Initial Interpretations |
title_short |
Cold-Water Coral Distributions in the Drake Passage Area from Towed Camera Observations – Initial Interpretations |
title_full |
Cold-Water Coral Distributions in the Drake Passage Area from Towed Camera Observations – Initial Interpretations |
title_fullStr |
Cold-Water Coral Distributions in the Drake Passage Area from Towed Camera Observations – Initial Interpretations |
title_full_unstemmed |
Cold-Water Coral Distributions in the Drake Passage Area from Towed Camera Observations – Initial Interpretations |
title_sort |
cold-water coral distributions in the drake passage area from towed camera observations – initial interpretations |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.293.5485 |
long_lat |
ENVELOPE(-60.000,-60.000,-60.000,-60.000) |
geographic |
Antarctic Drake Passage Shackleton Shackleton Fracture Zone Southern Ocean The Antarctic |
geographic_facet |
Antarctic Drake Passage Shackleton Shackleton Fracture Zone Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Drake Passage Southern Ocean |
genre_facet |
Antarc* Antarctic Drake Passage Southern Ocean |
op_source |
ftp://ftp.ncbi.nlm.nih.gov/pub/pmc/53/e3/PLoS_One_2011_Jan_25_6(1)_e16153.tar.gz |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.293.5485 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766249894129958912 |