Date: June 11, 2018
Source: University of California - Santa Barbara
These are not good times for the
North Atlantic right whale. Ship strikes and gear entanglement play major roles
in the mortality of these highly endangered mammals, which now number fewer
than 500. Making matters worse, climate-mediated shifts are pushing their prey
out of the whales' usual feeding grounds, rendering traditional habitat-focused
protection policies less than optimal.
This reality was starkly apparent
in the summer of 2017, when 17 right whales turned up dead in U.S.-Canadian
waters -- a mass mortality event attributed in large part to gear entanglement
and ship strikes. The event also revealed that the whales had gone beyond their
typical distributional boundaries. Scientists estimate that unless protective
policies are expanded to cover their shifting distribution, right whales may
face extinction in less than 30 years.
That's according to a new study
by researchers including UC Santa Barbara Marine Science Institute ecologist
Erin Meyer-Gutbrod. With atmospheric scientist Charles H. Greene, of Cornell
University, and postdoctoral research associate Kimberley T. A. Davies, of
Dalhousie University, Meyer-Gutbrod authored the paper "Marine Species
Range Shifts Necessitate Advanced Policy Planning," which appears in the
journal Oceanography.
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