Arctic boreal plankton species in the Northwest Atlantic

Johns, DG, Edwards, M and Batten, SD 2001 Arctic boreal plankton species in the Northwest Atlantic. Canadian Journal of Fisheries and Aquatic Sciences, 58 (11). 2121-2124.

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The Continuous Plankton Recorder (CPR) survey has sampled regularly in the Northwest Atlantic since the early 1960s. Over the last decade there has been a dramatic increase in the abundance of a number of arctic boreal plankton species, notably Calanus hyperboreus (Kroyer), Calanus glacialis (Jaschnov), and Ceratium arcticum, and a southerly shift of the copepod C. hyperboreus in the CPR survey. In 1998, C. hyperboreus was recorded at its farthest position south in the survey, 39 degrees N, off the Georges Bank shelf edge. Other studies have reported similar parallel biological responses on three trophic levels. During the late 1990s, production of Labrador Sea Water (LSW) has been at a high, a direct response to the phase of the North Atlantic Oscillation (NAO). The increase in abundance of these species, up to four standard deviations from the long-term mean, is linked to variability in the hydrography of the area and the driving climatic processes of the North Atlantic.

Item Type: Publication - Article
Additional Keywords: Plankton Long-term records Abundance Hydrography
Divisions: Sir Alister Hardy Foundation for Ocean Science > Other (SAHFOS) (expired)
Depositing User: EPrints Services
Date made live: 06 Nov 2006
Last Modified: 25 Apr 2020 09:56

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