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Record #186048:
- #186048
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MARC recordBiogeographic patterns of benthic invertebrate megafauna on shelf areas within the Southern Ocean Atlantic sector / S.J. Lockhart, C.D. Jones.
| Title: | Biogeographic patterns of benthic invertebrate megafauna on shelf areas within the Southern Ocean Atlantic sector / S.J. Lockhart, C.D. Jones. |
| Author(s): | Lockhart, S. J. Jones, C. D. |
| Date: | 2008. |
| In: | CCAMLR Science. (2008.), Vol. 15 (2008) |
| Abstract: | Analyses data from trawl catches of four research cruises between 1999-2006 to show distributional patterns of benthic invertebrate megafaunal assemblages. For northern Antarctic Peninsula and South Shetland Islands, data indicate two-layered pattern based on standardised total biomass data and composition of phyla that contribute to that biomass. Examination of physical oceanographic data reveals pattern of shelf faunal zonation, such that communities on northern shelves can be separated into zones based on physical properties of Antarctic circumpolar current and Weddell Sea water masses that meet and mix in region. Effects of disturbance regimes by iceberg scouring or historical commercial bottom trawling are evident at smaller spatial scales. Patterns of benthic invertebrate biomass are also described for South Orkney Islands, as well as general patterns of phylum-level composition for South Georgia, South Sandwich and Bouvet Islands. These regions are generally echinoderm-dominated, compared to hexactinellid sponge-dominated northern Antarctic Peninsula region. |
| Notes: | CCAMLR Science. Vol. 15 :167-192 (2008). |
| Keywords: | 574 -- Ecology. 574.5 -- Marine and freshwater ecology. 574.587 -- Benthos. 591.9 -- Animal distribution. 591.9(26.02) -- Animal distribution, pelagic. 592 -- Invertebrata. 593.9 -- Echinodermata. 593.4 -- Parazoa. 91(08) -- Expeditions: 1955- US Antarctic Program. 91(08) -- Expeditions: 1999 USAP. 91(08) -- Expeditions: 2003-06 USAP. F -- Biological sciences. (*7) -- Antarctic regions. (*723) -- South Georgia and Shag Rocks. (*724) -- South Sandwich Islands. (*725) -- South Orkney Islands. (*726) -- Maritime Antarctic. (*726.1) -- South Shetland Islands. (*726.5) -- Antarctic Peninsula, west coast and islands. (*726.8) -- Antarctic Peninsula, east coast and islands. (*786) -- Macquarie Island. (*80) -- Southern Ocean. (*82) -- South Atlantic Ocean. |
| SPRI record no.: | 186048 |
LDR 02827naa#a2200000#a#4500 001 SPRI-186048 005 20231211054704.0 007 ta 008 231211s2008####xx#ab#|##|###|0||#0|eng#d 035 ## ‡aSPRI-186048 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aLockhart, S. J. 245 10 ‡aBiogeographic patterns of benthic invertebrate megafauna on shelf areas within the Southern Ocean Atlantic sector /‡cS.J. Lockhart, C.D. Jones. 260 ## ‡a[S.l.] :‡b[s.n.],‡c2008. 300 ## ‡ap. 167-192 :‡bill., diags., tables, maps. 500 ## ‡aCCAMLR Science. Vol. 15 :167-192 (2008). 520 3# ‡aAnalyses data from trawl catches of four research cruises between 1999-2006 to show distributional patterns of benthic invertebrate megafaunal assemblages. For northern Antarctic Peninsula and South Shetland Islands, data indicate two-layered pattern based on standardised total biomass data and composition of phyla that contribute to that biomass. Examination of physical oceanographic data reveals pattern of shelf faunal zonation, such that communities on northern shelves can be separated into zones based on physical properties of Antarctic circumpolar current and Weddell Sea water masses that meet and mix in region. Effects of disturbance regimes by iceberg scouring or historical commercial bottom trawling are evident at smaller spatial scales. Patterns of benthic invertebrate biomass are also described for South Orkney Islands, as well as general patterns of phylum-level composition for South Georgia, South Sandwich and Bouvet Islands. These regions are generally echinoderm-dominated, compared to hexactinellid sponge-dominated northern Antarctic Peninsula region. 650 07 ‡a574 -- Ecology.‡2udc 650 07 ‡a574.5 -- Marine and freshwater ecology.‡2udc 650 07 ‡a574.587 -- Benthos.‡2udc 650 07 ‡a591.9 -- Animal distribution.‡2udc 650 07 ‡a591.9(26.02) -- Animal distribution, pelagic.‡2udc 650 07 ‡a592 -- Invertebrata.‡2udc 650 07 ‡a593.9 -- Echinodermata.‡2udc 650 07 ‡a593.4 -- Parazoa.‡2udc 650 07 ‡a91(08) -- Expeditions: 1955- US Antarctic Program.‡2udc 650 07 ‡a91(08) -- Expeditions: 1999 USAP.‡2udc 650 07 ‡a91(08) -- Expeditions: 2003-06 USAP.‡2udc 650 07 ‡aF -- Biological sciences.‡2local 651 #7 ‡a(*7) -- Antarctic regions.‡2udc 651 #7 ‡a(*723) -- South Georgia and Shag Rocks.‡2udc 651 #7 ‡a(*724) -- South Sandwich Islands.‡2udc 651 #7 ‡a(*725) -- South Orkney Islands.‡2udc 651 #7 ‡a(*726) -- Maritime Antarctic.‡2udc 651 #7 ‡a(*726.1) -- South Shetland Islands.‡2udc 651 #7 ‡a(*726.5) -- Antarctic Peninsula, west coast and islands.‡2udc 651 #7 ‡a(*726.8) -- Antarctic Peninsula, east coast and islands.‡2udc 651 #7 ‡a(*786) -- Macquarie Island.‡2udc 651 #7 ‡a(*80) -- Southern Ocean.‡2udc 651 #7 ‡a(*82) -- South Atlantic Ocean.‡2udc 700 1# ‡aJones, C. D. 773 0# ‡7nnas ‡tCCAMLR Science. ‡gVol. 15 (2008) ‡wSPRI-131147 916 ## ‡aHS 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20231211 ‡bHS