[MARMAM] New publication: Environment and anthropogenic activities influence cetacean habitat use in southeastern Brazil

Rodrigo Tardin rhtardin at gmail.com
Thu May 9 12:56:11 PDT 2019

Dear all,

We are pleased to share our latest paper with MARMAM:

Tardin RH, Chun Y, Jenkins C, Maciel IS, Simao SM, Alves MAS. Environment
and anthropogenic activities influence cetacean habitat use in southeastern
Brazil. Marine Ecology Progress Series 616: 197–210, 2019.

Investigating the influence of coastal development on marine environments
is a priority to maintain healthy seas. Cetaceans are top predators,
keystone and umbrella species and thus are good candidate models to
evaluate the extent of anthropogenic impacts on coastal habitats. We
employed a generalized linear model with spatial eigenvector mapping
(SEV-GLM) to understand the influence of environmental and anthropogenic
activities on migrant (humpback whale Megaptera novaeangliae) and
non-migrant (Bryde’s whale Balaenoptera brydei and common bottlenose
dolphin Tursiops truncatus) cetacean habitat use off Cabo Frio, Rio de
Janeiro, Brazil. We hypothesized that both environmental and anthropogenic
activities influence their habitat use. Data were collected during 118 boat
trips between December 2010 and June 2014. The best SEV-GLM predicted
humpback whales would increase linearly with distance to coast, with
minimum sea surface temperature (SST) around 19.4−19.8°C and maximum SST
around 25.5−26°C, with low variations in chlorophyll a (chl a)
concentrations. The model also predicted that humpback whales would occur
up to 10 km from diving areas, increasing linearly with distance to fishing
grounds. The best non-migrant cetacean SEV-GLM predicted that they would
occur more frequently around depths from 30−60 m, increasing with low SST
and high chl a concentration. For the anthropogenic component, the model
predicted that non-migrant cetaceans would occur up to 10 km from fishing
grounds. Our study modeled the influence of anthropogenic activities on
cetaceans, and indicates specific priority areas for cetacean conservation,
contributing at a local and national scale.

If you want a copy of the publication, please send me a message at
rhtardin at gmail.com
or you can find it at https://www.int-res.com/abstracts/meps/v616/p197-210/.


Rodrigo Tardin

Pós-doutorando - Departamento de Ecologia - IBRAG - UERJ
Pesquisador Associado - Laboratório de Bioacústica e Ecologia de Cetáceos -
D.Sc. em Ecologia e Evolução - IBRAG - UERJ
Post-doctoral fellow - Ecology department - IBRAG - UERJ (RJ, Brazil)
D.Sc. in Ecology and Evolution - UERJ
Associate scientist at Cetacean Bioacoustics and Ecology Lab - UFRRJ/ IF/

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