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Giant kelp (Macrocystis pyrifera) survival in deep water (25–40 m) during El Niño of 1997–1998 in Baja California, Mexico
| Content Provider | Scilit |
|---|---|
| Author | Ladah, Lydia Zertuche-González, Jose Antonio |
| Copyright Year | 2004 |
| Abstract | During the 1997–1998 El Niño, we examined seasonally a giant kelp population in deep water (25–40 m) off the coast of Northern Baja California. Though most populations in the region completely disappeared, large fertile adults survived the entire warming event at depth. At 25 m, there was no significant change in density or number of fronds per individual during the warming period from spring 1997 to spring 1998, though the surface canopy sloughed off (died) down to 15 m depth. By summer 1998, recruitment occurred at all depths at the site. Adult survival at depth was most likely important in post-disturbance recovery in surrounding populations by occupying substratum, providing vegetative growth, and producing spores. Survival in deep water during this extreme El Niño may have been due to local hydrography, such as internal waves bringing cool nitrate-rich water into the deeper regions of the shelf from below the thermocline, providing a refugium against the warm temperatures, low nutrients, and heavy wave action associated with warming events. Deep-water populations may regularly survive El Niño warming in this region due to internal wave activity, and go undetected due to the depth at which they occur and the sloughing of the shallow (<15 m) biomass. |
| Related Links | https://www.degruyter.com/downloadpdf/journals/botm/47/5/article-p367.pdf |
| Ending Page | 372 |
| Page Count | 6 |
| Starting Page | 367 |
| ISSN | 00068055 |
| e-ISSN | 14374323 |
| DOI | 10.1515/bot.2004.054 |
| Journal | Botanica Marina |
| Issue Number | 5 |
| Volume Number | 47 |
| Language | English |
| Publisher | Walter de Gruyter GmbH |
| Publisher Date | 2004-01-01 |
| Access Restriction | Open |
| Subject Keyword | Botanica Marina Marine and Freshwater Biology Deep Water Macroalgae El Niño Enso Giant Kelp Internal Waves Journal: Botanica Marina, Vol- 47, Issue- 1 |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science Aquatic Science Ecology, Evolution, Behavior and Systematics |
