The Antarctic-Magellan connection: Macrobenthos ecology on the shelf and upper slope, a progress report
By W. Arntz, S. Thatje, D. Gerdes, J. Gili, J. Gutt, U. Jacob, A. Montiel, C. Orejas, N. Teixidó. 2005
94 citations recorded by the source corpus.
SUMMARY: Ecological work carried out on the Antarctic and Magellan shelves since the first IBMANT conference held at the UMAG, Punta Arenas in 1997 is summarized to identify areas where progress has been made and others, where important gaps have remained in understanding past and present interaction between the Antarctic and the southern tip of South America. This information is complementary to a review on shallow-water work along the Scotia Arc (Barnes, 2005) and recent work done in the deep sea (Brandt and Hilbig, 2004). While principally referring to shipboard work in deeper water, above all during the recent international EASIZ and LAMPOS campaigns, relevant work from shore stations is also included. Six years after the first IBMANT symposium, significant progress has been made along the latitudinal gradient from the Magellan region to the high Antarctic in the fields of biodiversity, biogeography and community structure, life strategies and adaptations, the role of disturbance and its significance for biodiversity, and trophic coupling of the benthic realm with the water column and sea ice. A better understanding has developed of the role of evolutionary and ecological factors in shaping past and present-day environmental conditions, species composition and distribution, and ecosystem functioning. Furthermore, the science community engaged in unravelling Antarctic-Magellan interactions has advanced in methodological aspects such as new analytical approaches for comparing biodiversity derived from visual methods, growth and age determination, trophic modelling using stable isotope ratios, and molecular approaches for taxonomic and phylogenetic purposes. At the same time, much effort has been invested to complement the species inventory of the two adjacent regions. However, much work remains to be done to fill the numerous gaps. Some perspectives are outlined in this review, and suggestions are made where particular emphasis should be placed in future work, much of which will be developed in the frame of SCAR’s EBA (Evolution and Biodiversity in the Antarctic) programme.
Subfields: Global and Planetary Change, Oceanography
View Paper: https://www.semanticscholar.org/paper/e4ea48a867f5bf275c5e55389684371c02a1ea15
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Citations in the corpus
- DNA barcoding reveals new insights into the diversity of Antarctic species of Orchomene sensu lato (Crustacea: Amphipoda: Lysianassoidea) (2011, background): “The circum-Antarctic distribution can be explained by similar environmental conditions in the sea around the continent, as well as by the circumpolar current systems (Arntz et al., 2005).”
- Evolutionary pathways among shallow and deep-sea echinoids of the genus Sterechinus in the Southern Ocean (2011, background): “In spite of the isolation established millions of years ago, Arntz et al. (2005) suggested a strong biogeographic union between the marine benthic faunas of the Antarctic Peninsula and the Magellanic region, explained by the geologic history of the two continents.”
- Climate Change and Invasibility of the Antarctic Benthos (2007, background): “Other anomuran and brachyuran crabs from southern South America would be likely candidates for invasion if sea temperatures increased significantly.”