Flexible diel vertical migration behaviour of zooplankton in the Irish Sea
| Autor: | Roger Harris, Xabier Irigoien, David V. P. Conway |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences Ecology biology 010604 marine biology & hydrobiology fungi macromolecular substances Aquatic Science Plankton Sagitta biology.organism_classification 01 natural sciences Zooplankton Predation Water column Oceanography Calanus 14. Life underwater Diel vertical migration Ecology Evolution Behavior and Systematics Copepod 0105 earth and related environmental sciences |
| Zdroj: | Marine Ecology Progress Series. 267:85-97 |
| ISSN: | 1616-1599 0171-8630 |
| DOI: | 10.3354/meps267085 |
| Popis: | The diel vertical migration (DVM) of the whole plankton community was investigated in the central and coastal Irish Sea. Generally, more than 60% of the plankton did not perform signifi- cant DVM. A correlation analysis of the weighted mean depths of different organisms and their potential predators suggested relationships between 2 groups: Oithona spp., copepod nauplii and fish larvae, and Calanus spp., Pseudocalanus elongatus and chaetognaths (Sagitta spp.). Organisms showing significant DVM were chaetognaths (Sagitta spp.), Calanus spp. and P. elongatus. Calanus spp. showed clear ontogenic variations in DVM and, along with P. elongatus, demonstrated great flexibility in both the amplitude and direction of migration. P. elongatus did not migrate in the coastal area and Calanus spp. showed a clear reverse migration. The direction of migration appeared to be related to the vertical position of the chaetognaths in the water column during the day. |
| Databáze: | OpenAIRE |
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