CCAMLR-IWC-WS-08

Ecosystem models are being developed to explore a range of issues globally. This paper is currently in draft form open to comment and is being developed to provide an introduction to the CCAMLR-IWC Workshop to review input data for Antarctic marine ecosystem models. It summarises background to the use of ecosystem models in CCAMLR and the IWC and a history of the developmental work in those Read More
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Admin Admin (Secrétariat de la CCAMLR)

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While the joint CCAMLR-IWC workshop will consider a number of parameters for species groups, including abundance, trends in abundance, habitat utilisation, foraging and growth, this review of pack-ice seals focuses primarily on abundance and to a lesser extent trends in abundance. The review addresses population surveys and abundance estimates for the four species of phocid seal commonly Read More
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Admin Admin (Secrétariat de la CCAMLR)

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This report reviews the availability of data describing penguin abundance in the CCAMLR Convention area, and the uncertainties in deriving overall abundance estimates from these counts. Counts of breeding colonies are available from a variety of sources and, when combined, coverage is thought to be reasonably comprehensive for some areas, but less complete for others. One key problem is that Read More
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Admin Admin (Secrétariat de la CCAMLR)

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First attempts were made in the early 1980’s to estimate the krill and pelagic food consumption by Antarctic demersal fish. These estimates were extended to the mesopelagic realm and the high-Antarctic Zone in the late 1980’s and early 1990’s when these areas were exploited commercially and a larger number of food studies were conducted. Currently, the best estimates of krill consumption by Read More
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Admin Admin (Secrétariat de la CCAMLR)

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Krill (Euphausia superba) distribution and abundance data are available from a number of sources: from net surveys (the longest historical series of available date), from acoustic surveys, from fisheries data and from the distribution of krill predators. Each of these forms of data collection has its own biases and limitations and our current understanding of krill distribution and abundance Read More
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Admin Admin (Secrétariat de la CCAMLR)

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This report summarizes the satellite ocean color (chlorophyll) data that are currently available, from missions beginning with the Coastal Zone Color Scanner in the late 1970s through to the SeaWiFS and MODIS sensors that have been providing data for the last ten years. The characteristics of these data and limitations such as cloud cover and high solar zenith angle are discussed with regard Read More
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Admin Admin (Secrétariat de la CCAMLR)

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