(Table 1) Occurrences of Epimeria georgiana species complex (Amphipoda) in the Weddel and Scotia Sea

DNA barcoding revealed four well-supported clades among amphipod specimens that keyed out to Epimeria georgiana Schellenberg, 1931, three clades with specimens from the southern Scotia Arc and one clade with specimens from the Weddell Sea. Detailed morphological investigations of sequenced specimens were conducted, through light and scanning electron microscopy. High magnification (500-2,000 fold) revealed features such as comb-scales on the first antenna and trich bearing pits on the fourth coxal plate to be similar for all specimens in the four clades. Consistent microstructure character differences in the Weddell Sea specimens combined with high genetic distances (COI divergence>20%) allowed the description of Epimeria angelikae, a species new to science. Specimens of E. georgiana in the other three COI clades from the Scotia Arc were morphologically indistinguishable. Representative specimens of clade A are also illustrated in detail. Our results on the high genetic divergences in epimeriid amphipods support the theory of the southern Scotia Arc being a centre of Antarctic diversification.

Biogenic opal estimation of deep-sea sediment cores from the Scotia Sea

We present biogenic opal flux records from two deep-sea sites in the Scotia Sea (MD07-3133 and MD07-3134) at decadal-scale resolution, covering the last glacial cycle. Besides conventional and time-consuming biogenic opal measuring methods, we introduce new biogenic opal estimation methods derived from sediment colour b*, wet bulk density, Si/Ti-count ratio, and Fourier transform infrared spectroscopy (FTIRS). All methods capture the biogenic opal amplitude, however, FTIRS - a novel method for marine sediment - yields the most reliable results. 230Th normalization data show strong differences in sediment focusing with intensified sediment focusing during glacial times. At MD07-3134 230Th normalized biogenic opal fluxes vary between 0.2 and 2.5 g/cm2/kyr. Our biogenic opal flux records indicate bioproductivity changes in the Southern Ocean, strongly influenced by sea ice distribution and also summer sea surface temperature changes. South of the Antarctic Polar Front, lowest bioproductivity occurred during the Last Glacial Maximum when upwelling of mid-depth water was reduced and sea ice cover intensified. Around 17 ka, bioproductivity increased abruptly, corresponding to rising atmospheric CO2 contents and decreasing seasonal sea ice coverage.

Chattel exemptions from writs of execution in Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward Island, Quebec, Saskatchewan and Yukon Territory,

Mode of access: Internet.

Ship.

[From Jasper Cropsey Sketch book, 1855-1856]

Lake, ship and trees.

[From Jasper Cropsey Sketch book, 1855-1856]

Selected occupational fatalities related to ship building and repairing as found in reports of OSHA fatality/catastrophe investigations.

"January 1990."

Ship maintenance: foreign commercial shipyard repairs to U.S. government ships.

Mode of access: Internet.

Navy ships: status of SSN-32 ship construction program.

Mode of access: Internet.

Proceedings of the annual convention of the Union of Nova Scotia Municipalities.

Mode of access: Internet.

Ship simulation study of Grays Harbor Navigation Project, Grays Harbor, Washington /

Authors: J. Christopher Hewlett, Kathren M. Eagles, Carl J. Huval, Larry L. Daggett.

The ship of the soul, and other papers.

Mode of access: Internet.

Model tests and numerical simulation of ship capsizing in following seas : final report for period December 1976 - October 1979 /

"Report no. CG-D-08-81."

Ship escape, survival and rescue detection system for Great Lakes winter shipboard operations : final report /

Cover title.

Horses on board ship : a guide to their management /

Includes index.