The Ocean's Menagerie Heating up with Climate Change

Climate warming heats up the web of biological interactions and accelerates community change from the base and top of oceanic food chains. Warming oceans have fueled the decade long epidemic of sea star wasting disease, causing a top-down trophic cascade and massive changes to near-shore kelps from California to British Columbia. Our recent work unveils Vibrio pectenicida as a causative agent of sea star wasting disease and the decline of the sunflower star to endangerment.  Our 12 year study of eelgrass-protist dynamics?also shows a role for warming events in large decline of seagrasses. Continental scale surveys reveal that the protist L. zosterae is a damaging pathogen, characterized by diverse strains varying in virulence and likely temperature sensitivity, from San Diego to Alaska. New work highlights multiple modes of disease transmission from waterborne to herbivore- facilitated.

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Speaker: Drew Harvell, Stanford University