[MARMAM] New publication on Bryde's whales in the Galápagos Islands
sdurkacz at gmail.com
Fri Sep 8 13:32:02 PDT 2017
We are pleased to announce to you our new publication in Neotropical
Title: Bryde's whales (*Balaneoptera brydei) *in an area of upwelling off
Isla San Cristóbal, Galápagos.
Authors: Douglas Biggs, Stephanie Durkacz, Lindsay Martin, Martin Narvaez,
Abreana De La Garza, Zelinda Lombrana, and Marco Santos.
Abstract: Bryde’s whales aggregate in the Galápagos Archipelago in an area
off the north coast of Isla San Cristóbal during periods of upwelling.
Seasonally, these whales are locally abundant off San Cristóbal between May
and November, except in years when El Niño conditions occur. Field surveys
were performed in summers 2013, 2014, and 2016 around San Cristóbal to
search for the presence of Bryde’s whales, and to document their spatial
relationship with 20 °C isotherm topography. Our surveys found that most
sightings of these whales occurred in locations within 3–6 km of shore
(water depths 70–300 m), where the 20 °C isotherm depth shoaled to an
average of 31 m below the surface. The presence of Blue whales (*Balaenoptera
musculus)*, as well as Bryde’s whales was documented during 2016 upwelling.
Mother-calf pairs of Bryde’s and Humpback whales were also documented off
San Cristóbal in summers 2013 and 2016 and 2014, respectively. We suggest
that our three summers of sightings of Bryde’s whales in an area of
upwelling indicates that Isla San Cristóbal is important habitat for
individuals and mother/calf pairs alike.
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