Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/1184
Title: Accumulation of mesozooplankton in a wake area as a causative mechanism of the island- mass effect
Authors: Hernández-León, Santiago 
UNESCO Clasification: 251001 Oceanografía biológica
Keywords: Zooplankton
Canary Islands
Issue Date: 1991
Publisher: 0025-3162
Journal: Marine Biology 
Abstract: Mesozooplankton biomass (as displacement volume and protein content) and electron-transport system (ETS) activity have been studied in the coastal waters around the Canary Islands. Increases in biomass and ETS activity, on a unit volume basis, were observed in the wakes of the islands. The biomass values obtained in the leeward area for Gran Canaria Island were up to ten times higher than those observed for typical oceanic waters around this archipelago. Sampling was performed in May 1986 at the end of the characteristic vertical mixing period in these waters. Relatively strong winds were recorded prior to sampling. Specific ETS activity was higher at the windward stations on the island shelf. This correlates with the observation in a recent study of increased primary production on the shelf area, where turbulence produced by the northerly trade winds has a marked effect. The persistence of this turbulence during a prolonged wind-pulse results in an accumulation of organisms in the wake of the islands due to current dynamics. This process is proposed as being an important causative mechanism of the island-mass effect. Different biomass values were recorded between circular and oblong islands. The latter are oriented towards the current and the northerly trade winds, and display significantly lower biomass values than the former.
URI: http://hdl.handle.net/10553/1184
ISBN: 253162
ISSN: 0025-3162
DOI: 10.1007/BF01320241
Source: Marine Biology [ISSN 0025-3162], v. 109, p. 141-147
Appears in Collections:Artículos
Thumbnail
Adobe PDF (614,71 kB)
Show full item record

SCOPUSTM   
Citations

49
checked on Feb 28, 2021

Page view(s)

26
checked on Feb 27, 2021

Download(s)

46
checked on Feb 27, 2021

Google ScholarTM

Check

Altmetric


Share



Export metadata



Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.