Nudibranch Range Shifts Associated with the 2014 Warm Anomaly in the Northeast Pacific

Autor: Brenna Green, William E. Pence, Douglas E. Mason, Nancy C. Treneman, Phillip M. Dobry, Jeffrey H. R. Goddard, Craig Hoover
Rok vydání: 2016
Předmět:
Zdroj: Bulletin, Southern California Academy of Sciences. 115:15-40
ISSN: 2162-4534
0038-3872
Popis: The Northeast Pacific Ocean was anomalously warm in 2014, despite ENSO-neutral conditions in the tropical Pacific. We document northern range shifts associated with this anomaly for 30 species of nudibranchs and other shallow-water, benthic heterobranch gastropods from southern California to southern Oregon. Nine of these (Placida cremoniana, Trapania velox, Doriopsilla fulva, Janolus anulatus, J. barbarensis, Flabellina cooperi, Anteaeolidiella chromosoma, A. oliviae, and Noumeaella rubrofasciata) were recorded from new northernmost localities, while the remainder were found at or near northern range limits which we show were established mainly during El Nino events. All 30 species have planktotrophic larval development, and six were observed spawning at northern localities, increasing the likelihood that their ranges will continue to shift poleward as the strong 2015-16 El Nino develops. Notable among these was Okenia rosacea, usually found south of San Francisco and last observed in Oregon as ...
Databáze: OpenAIRE