Event Details

Friday, 08 March 2019 - Friday, 08 March 2019
3:00 pm - 4:00 pm
UQ Location:
Goddard Building (St Lucia)
Event category(s):

Event Contact

gabriella scata
0490 887 277
Org. Unit:
Marine Science

Event Description

Full Description:
Hi everyone!

The Centre for Marine Sciences is hosting another exciting Special Seminar on Friday 8th March in Goddard – 257 at 3pm.

Our speaker is Professor Amatzia Genin, from the Interuniversity Institute for Marine Sciences in Eilat on the Red Sea and the Department of Ecology, Evolution & Behavior of The Hebrew University of Jerusalem.

The title of his talk is “Behavioral responses of zooplankton and fish to currents in the coral reef: an oceanographic perspective”.

Please find below the abstract of the talk.

We hope to see you there!

Behavioral responses of zooplankton and fish to currents in the coral reef: an oceanographic perspective Planktonic organisms in the world’s oceans reside in constantly moving waters. However, the response of zooplankton to ambient currents remained elusive, mostly because of difficulties in following those minute, nearly transparent individuals in the water column.

Using a 3-D acoustic imaging system, we tracked some 375,000 individual zooplankters at two coastal sites in the Red Sea. By resolving their motions from those of the water around them, we found that the animals effectively maintained their depth by swimming against upwelling and downwelling currents. In turn, such swimming generates immense accumulations of zooplankton along oceanic fronts as well as over coastal slopes where fringing coral reefs are found. Indeed, some zooplanktivorous coral reef fishes appear to be well-adapted to feeding on aggregated prey. Their predation is intense and efficient, lacking the “leveling-off”, expected under Holling’s Type II functional response theory. Fish predation counters the aggregation mechanism, creating a zone of depleted zooplankton along the reef, as was found long ago in the GBR. The “supply” of aggregated zooplankton to the reef and its efficient removal by fish form an important pathway for the import of allochthonous nutrients from the water column to the reef.

Directions to UQ

Google Map:
To St Lucia Campus, UQ Ipswich, and UQ Gatton.

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