Distribution and trophic links of gelatinous zooplankton on Dogger Bank, North Sea

Jessica R. Frost, Anneke Denda, Clive J. Fox, Charles A. Jacoby, Rolf Koppelmann, Morten Holtegaard Nielsen, Marsh J. Youngbluth

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The ecology of small, gelatinous zooplankton is not integrated into management of Dogger Bank (54° 00′ N, 3° 25′ E to 55° 35′ N, 2° 20′ E). In pursuit of this goal, gelatinous zooplankton and their potential prey were sampled along a transect across the bank on June 10–16, 2007. Eleven species of small medusae and ctenophores were collected, with six abundant taxa occurring in greater numbers below the thermocline and in the shallower, southeastern portion of the bank. There were no statistically significant diel changes in distribution. In contrast, potential prey were distributed more evenly across the bank and throughout the water column. Isotopic analyses revealed that gelatinous zooplankton fed on both smaller (100–300 μm) and larger (>300 μm) mesozooplankton, but also potentially on each other. These ecological insights suggest that small medusae and ctenophores should be integrated into sustainable management of Dogger Bank.
Original languageEnglish
JournalMarine Biology
Volume159
Issue number2
Pages (from-to)239-253
ISSN0025-3162
DOIs
Publication statusPublished - 2011
Externally publishedYes

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