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Fishes: Trophic modelling of the Ross Sea
Description / Abstract: A supporting document to the CCAMLR Science paper: M.H. Pinkerton, J.M ... . Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... trophic modelling because a number of species are amongst the most likely components of the system to be ... the biomass of many of the fish species. The fish fauna can be divided into a coastal (shelf) fauna ... . antarcticum adults (La Mesa et al. 2004b), and a continental slope fauna dominated by macrourids, rajiids ... , and deeper water notothenioids. Sampling on the shelf out to a depth of about 500 m has been carried ...
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Benthos: Trophic modelling of the Ross Sea
Description / Abstract: A supporting document to the CCAMLR Science paper: M.H. Pinkerton, J.M ... . Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... ; Mitchell & Clark 2004; Hanchet et al. 2008). If box or other corers are used, then a much smaller area ... structure of the benthic ecosystem used in this study is based on a widely-used but simple energetic model ... generic bacteria and detrital model groups. We use a definition here of megabenthos >20 mm in size ... , macrobenthos 0.5–20 mm, and meiobenthos <0.5 mm. It is unclear whether a more detailed subdivision of the ...
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Bacteria and detritus: Trophic modelling of the Ross Sea
Description / Abstract: A supporting document to the CCAMLR Science paper: M.H. Pinkerton, J.M ... . Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... detritus in sediments (Kemp 1990; Fabiano et al. 2000b). Here, we assume that a nominal 25% of detrivorous ... been directly predated and have not been excreted as a waste product. It hence includes 2 bodies ... given in a number of papers by Ducklow (Ducklow 1999; Ducklow et al. 2000, 2001; Monticelli et al. 2003 ... phytoplankton bloom by about one month, with standing stocks of bacterial biomass rising from a minimum in late ...
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Whales: Trophic modelling of the Ross Sea
Description / Abstract: A supporting document to the CCAMLR Science paper: M.H. Pinkerton, J.M ... . Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... separate whale trophic compartments. A summary of whale parameters for the Ross Sea is given in Table 1 ... from Sergeant (1969) and has been used by a number of other studies (e.g. Reilly et al. 2004). Daily ... methods. There is a wide range of estimates of daily consumption because of variations in the amount ... found in a “full stomach”, number feeds per day, and the time of sampling relative to feeding ...
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Zooplankton: Trophic modelling of the Ross Sea
Description / Abstract: A supporting document to the CCAMLR Science paper: M.H. Pinkerton, J.M ... . Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... during late summer and early winter, but decrease at a constant rate throughout the winter to a low of 9 ... . According to Nicol et al. (2004) low food abundance during winter leads to a decreased growth rate ... , significantly increased intermoult period, and a switch to carnivorous/detrital diet. This species is more ... were taken using a Hamburg Plankton Net with a mouth opening of 5 m2 using double oblique deployment ...
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Seals: Trophic modelling of the Ross Sea
Description / Abstract: A supporting document to the CCAMLR Science paper: M.H. Pinkerton, J.M ... . Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... areas (e.g., Siniff et al. 1980; Testa & Siniff 1987; Schreer & Testa 1992). A basic review of ... , although a very few reach subantarctic islands as far north as New Zealand and the southern coasts of ... . Stirling 1969; Burns et al. 1998, 1999; Testa & Siniff 1987; Stewart et al. 2003). A relatively stable ... about a further 500 animals on the western side of McMurdo Sound, mostly near the Strand Moraines and ...
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Birds: Trophic modelling of the Ross Sea
Description / Abstract: A supporting document to the CCAMLR Science paper: M.H. Pinkerton, J.M ... . Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... the two methods was 24.6%, with a mean difference of 10.4% (method 1 higher on average). In the ... . This was converted to carbon using a ratio of 0.4 gC/g wet-weight (Vinogradov 1953). In the second ... content of the prey tissue. Assimilation efficiency values for fish and squid of a specialized feeder ... fishing vessels and removed from the region this would also represent a net export of biomass from the ...
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Physical data used in space averaging: Trophic modelling of the Ross Sea
Description / Abstract: A supporting document to the CCAMLR Science paper: M.H. Pinkerton, J.M ... . Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... , whereas benthic compartments and those higher in the food web may have a strong bathymetric component ... meridians. The total area of the study region is c. 637 000 km2. This region was chosen for a number of ... Southern Ocean. Cross-shelf transport is only partly understood and appears to be small, based on a ... volume flux via a relatively strong bottom Ekman layer. Langone et al. (1998) estimate a residence time ...
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Cephalopods: Trophic modelling of the Ross Sea
Description / Abstract: A supporting document to the CCAMLR Science paper: M.H. Pinkerton, J.M ... . Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... Antarctic Marine Life) voyage to the Ross Sea on the RV Tangaroa captured a number of cephalopods during ... cephalopod species known to occur in the Ross Sea by at least a further four squid, six octopod species, and ... possibly a number of undescribed taxa. The most diverse squid fauna appears to be found over the outer ... Stauroteuthis gilchristi No common name Cirroctopus glacialis No common name Cirrata sp. A Octopodid ...
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Letter from the Co-conveners
Description / Abstract: This is a letter from the Co-conveners, Dr C. Darby (UK) Dr C. Jones (USA ... ), to participants of the 2018 meeting of the Workshop for the Development of a Dissostichus mawsoni ... of a regional stock hypothesis for Dissostichus mawsoni in Area 48. The lack of a hypothesis ... , in this area. It subsequently welcomed the offer from Germany to host a CCAMLR Workshop for the ... development of a D. mawsoni stock hypothesis for statistical Area 48 (see SC-CAMLR-XXXVI, paragraph 5.7 ... ), with an objective of delivering such a stock hypothesis before the 2018 meetings of WG-SAM and WG-EMM ...
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