[MARMAM] Multi-decadal climate change and cetaceans
chsalvadeo at yahoo.com.mx
Fri Sep 16 15:22:29 PDT 2011
Hello to all…
The following book chapterjust being published
Salvadeo C., Lluch-Belda D., Lluch-Cota S. and M. Mercuri (2011). Review of Long Term Macro-Fauna Movement by Multi-Decadal Warming Trends in the Northeastern Pacific. Climate Change - Geophysical Foundations and Ecological Effects, Juan Blanco and Houshang Kheradmand (Ed.), ISBN: 978-953-307-419-1,
Abstract: Worldwide marine ecosystems are continuously responding to changes in the physical environment at diverse spatial and temporal scales. In addition to the seasonal cycle, other natural patterns occur at the interannual scale, such as El Niño-La Niña Southern Oscillation (ENSO) with a period of about three to seven years. When ocean conditions stay above or below the long-term average for periods of 10 to 20 years we recognize decadal fluctuations, and those with periods longer than 50 years are known as regime. In this work we review published reports on long term macro-fauna (nekton) movements as related to multi-decadal temperature trends in the Northeastern Pacific. Two well defined long term climate warming trends were observed in the sea surface temperature anomalies, these appear to be part of cyclical changes that include cooling trends over the California Current System. Changes in the sea surface temperature are indicators of more
complex ocean processes related to alterations in oceanic and atmospheric circulations, which ultimately affect the enrichment of superficial waters. The biological responses to those ocean processes are complex and not well understood. There are evidences which indicate that distribution shifts related to long term ocean warming had occurred for some species, including poleward shifts (gray whale and Pacific white-sided dolphin), range expansions (California sardine and jumbo squid) and redistribution (sperm whale).
Make all requests to: chsalvadeo at yahoo.com.mx
If you want to download the entire book:
La Paz, B.C.S.
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