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Fast ice distribution in Adélie Land, East Antarctica: interannual variability and implications for emperor penguins Aptenodytes forsteri
| Content Provider | Semantic Scholar |
|---|---|
| Author | Massom, Robert A. Hill, Katrina Barbraud, Christophe Adams, Neil Ancel, André Emmerson, Louise Pook, Michael J. |
| Copyright Year | 2009 |
| Abstract | Antarctic fast ice is of key climatic and ecological importance, yet its distribution and variability are poorly understood. We present a detailed analysis of fast ice along the Adelie Land coast (East Antarctica) using satellite data from 1992 to 1999. Fast ice formation along this coastline is inti- mately linked to grounded iceberg distribution in waters of 75% success) coincided with lower-than-average fast ice extents and persistently short distances to nearest open water (foraging grounds), and corresponded to a strong positive phase of the Southern Annular Mode. Poor breeding seasons in 1992, 1994 and 1995 (success <15%) coin- cided with average to slightly higher-than-average ice extents and persistently long distances to forag- ing grounds. Poor-to-moderate breeding years (success ~40 to 50%), e.g. 1996 and 1997, occurred with above-average ice extents combined with fairly long distances from breeding to foraging grounds dur- ing the chick nurturing season. The overall correlation between breeding success and distance was high (r 2 = 0.89), albeit based on a limited number of years (n = 8). Substantially less fast ice was present in two Argon satellite photographs taken in August and October 1963. This coincided with a highly successful breeding season and appears to have been related to stronger and more southerly winds. |
| Starting Page | 243 |
| Ending Page | 257 |
| Page Count | 15 |
| File Format | PDF HTM / HTML |
| DOI | 10.3354/meps07734 |
| Volume Number | 374 |
| Alternate Webpage(s) | http://www.cebc.cnrs.fr/publipdf/2009/MMEPS374_%202009.pdf |
| Alternate Webpage(s) | http://ecite.utas.edu.au/X/78FA6DCA9B375963E053031911AC2062 |
| Alternate Webpage(s) | https://doi.org/10.3354/meps07734 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
