Department of Fisheries Oceanography
"The unusual ecology and climate sensitivity of sand lance, key forage fishes on the Northwest-Atlantic Shelf"
Hannes Baumann
Associate Professor, University of Connecticut
Wednesday, January 29, 2025
3-4pm
SMAST E 101-102 and via Zoom
Abstract:
No matter how you look at these small, slender-bodied fishes that at times live buried in sediment or emerge as dense pelagic schools, sand lance (Ammodytes spp) easily awe even the most hard-to-impress naturalist. Their unusual behavior, patchy occurrence, and reproductive timing are paralleled only by their extraordinary importance as forage fishes that sustain well-known hotspots of iconic predators (cod, tuna, sharks, seabirds, whales) all across the Northwest Atlantic shelf. And yet, despite their recognized role as the ‘backbone’ of many shelf ecosystems, we still don’t understand many basic aspects of sand lance ecology, population structure and climate vulnerability. Our lab has been working alongside other US and Canadian research groups on multiple sand lance projects that have produced stunning new insights into these enigmatic fishes. My talk will highlight just a few of these discoveries; including my labs experimental work finding sand lance embryos to be unusually CO2-sensitive and ongoing genomic studies revealing the population structure of the Northern sand lance (A. dubius) and it’s separation from the congener A. americanus. Collectively, recent research suggests an uncertain future for sand lance productivity, with potential ripple effects throughout the entire Northwest-Atlantic shelf ecosystem.
Join Zoom Meeting
https://umassd.zoom.us/j/93758230260?pwd=OHJ5UDloQkZZaCtXcTlBNlR6Qm0rQT09
Note: Meeting passcode required, email contact below to receive
To request the Zoom passcode, or for any other questions, please