Chaetognath ecology in relation to hydrographic conditions in the Australian sector of the Antarctic Ocean / Travis B. Johnson, Makoto Terazaki.

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100 1# ‡aJohnson, Travis B.
245 10 ‡aChaetognath ecology in relation to hydrographic conditions in the Australian sector of the Antarctic Ocean /‡cTravis B. Johnson, Makoto Terazaki.
260 ## ‡a[S.l.] :‡b[s.n.],‡c2004.
300 ## ‡ap. 1-15 :‡bill., diags., table, map.
500 ## ‡aNational Institute of Polar Research. Polar Bioscience. Vol. 17 :1-15 (2004).
520 3# ‡aReports on chaetognath ecology across Antarctic Divergence (AD) in waters off Wilkes Land, based on north-south transects during cruises in 1994-95 and 2001-02 summer seasons, with particular reference to hydrographic conditions coupled with temporal changes. Includes distribution, feeding, size and maturity, and uses time series sampling to make specific comparisons of water masses in relation to time, both long and short term. Numerically dominant species was Eukrohnia hamata at over 80% of collected specimens, and it was most abundant north of AD where bi-modal distribution was common. Breeding of E. hamata appeared unaffected by water conditions, with same maturity stages present in similar percentages across water masses and vertical segregation of size classes clearest north of AD in more stratified water column. In other locations, size classes overlapped considerably, probably due to physical forcing from mixing water. Feeding activity was highest on north and south edges of AD with no recognizable diel pattern. Prevalence of smaller specimens containing prey items north of AD suggests two separate populations, and percentage of E. hamata with food in their gut was frequently nearly 50%.
650 07 ‡a574 -- Ecology.‡2udc
650 07 ‡a574.5 -- Marine and freshwater ecology.‡2udc
650 07 ‡a574.583 -- Plankton.‡2udc
650 07 ‡a59 -- Zoology.‡2udc
650 07 ‡a595.135 -- Chaetognatha: Eukrohnia hamata.‡2udc
650 07 ‡a574.36 -- Biomass and energetics of populations.‡2udc
650 07 ‡a574.2.043/.045 -- Organisms, influence of physical environment.‡2udc
650 07 ‡a551.465.5 -- Ocean currents.‡2udc
650 07 ‡a591.9(26.02) -- Animal distribution, pelagic.‡2udc
650 07 ‡a91(08) -- Expeditions: 1956- Japanese Antarctic Research Expeditions.‡2udc
650 07 ‡a91(08) -- Expeditions: 1994-95 JARE.‡2udc
650 07 ‡a91(08) -- Expeditions: 2001-02 JARE.‡2udc
650 07 ‡aF -- Biological sciences.‡2local
651 #7 ‡a(*7) -- Antarctic regions.‡2udc
651 #7 ‡a(*80) -- Southern Ocean.‡2udc
651 #7 ‡a(*86) -- Southern Ocean, Australian sector.‡2udc
700 1# ‡aTerazaki, Makoto.
773 0# ‡7nnas ‡tNational Institute of Polar Research. Polar Bioscience. ‡gVol. 17 (2004) ‡wSPRI-152313
916 ## ‡aHS
917 ## ‡aUnenhanced record from Muscat, imported 2019
948 3# ‡a20240419 ‡bHS