We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Horizontal and vertical dynamics of zooplankton and larval fish communities during mid-summer in Disko Bay, West Greenland.
- Authors
MUNK, PETER; NIELSEN, TORKEL GISSEL; HANSEN, BENNI WINDING
- Abstract
Disko Bay is a highly productive inlet at the border between high- and low-arctic sectors of west Greenland. The physical/ chemical conditions in the bay have changed during recent decades, specifically during an inflow event in 1996-1997 that led to increased deep-water temperatures. To further understand the consequences of physical changes to the plankton community in the bay, we examine findings from a field study on mesozooplankton and fish larvae in the areas of Disko Bay and Disko Bank carried out in 1997. We sampled 31 stations over 5 days along four transects and assessed horizontal and vertical distribution patterns, community composition and plankton trophodynamics. Plankton abundance was enhanced near-coast and across the pycnocline, and communities differed between regions. Polar cod (Boreogadus saida) and the sandeel (Ammodytes sp.) were among the abundant fish larvae. Productivity/growth estimates of key species of copepods and fish larvae showed no apparent relationship to food availability; they reached weight specific values of ~6% day-1 for copepods and ~14% day-1 for fish larvae. Overall, we found a rich and dynamic plankton community, strongly influenced by the complex hydrography of the area. Thus, changes in physical characteristics of the bay could threaten the resilience of its ecosystem.
- Subjects
GREENLAND; ZOOPLANKTON; MARINE zooplankton; ECOLOGY of plankton; BOREOGADUS saida; BAYS
- Publication
Journal of Plankton Research, 2015, Vol 37, Issue 3, p554
- ISSN
0142-7873
- Publication type
Article
- DOI
10.1093/plankt/fbv034