Interaction between dietary and habitat niche breadth influences cetacean vulnerability to environmental disturbance

Cloyed, Carl S.; Balmer, Brian C.; Schwacke, Lori H.; Wells, Randall S.; Berens McCabe, Elizabeth J.; Barleycorn, Aaron A.; Allen, Jason B.; Rowles, Teresa K.; Smith, Cynthia R.; Takeshita, Ryan; Townsend, Forrest I.; Tumlin, Mandy C.; Zolman, Eric S.; Carmichael, Ruth H.

doi:10.1002/ecs2.3759

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Interaction between dietary and habitat niche breadth influences cetacean vulnerability to environmental disturbance

2021
By Cloyed, Carl S. ; Balmer, Brian C. ; Schwacke, Lori H. ; ...
Source: Ecosphere, 12(9)

[PDF-4.27 MB]

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Details:

Journal Title:

Ecosphere
Personal Author:

Cloyed, Carl S. ; Balmer, Brian C. ; Schwacke, Lori H. ; Wells, Randall S. ; Berens McCabe, Elizabeth J. ; ... More +

Cloyed, Carl S. ; Balmer, Brian C. ; Schwacke, Lori H. ; Wells, Randall S. ; Berens McCabe, Elizabeth J. ; Barleycorn, Aaron A. ; Allen, Jason B. ; Rowles, Teresa K. ; Smith, Cynthia R. ; Takeshita, Ryan ; Townsend, Forrest I. ; Tumlin, Mandy C. ; Zolman, Eric S. ; Carmichael, Ruth H. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; OPR (Office of Protected Resources)

NMFS (National Marine Fisheries Service) ; OPR (Office of Protected Resources) Less -
Description:

Ecosystems are experiencing elevated levels of disturbance, and species with narrower niches are often more vulnerable to disturbances. Niche breadth is often measured in terms of either diet or habitatuse but diet and spatial use are infrequently considered in tandem. These different aspects of niche breadthpotentially expose species to different types of disturbances; species with narrow dietary niches may be more affected by disturbances that alter trophic relationships, while species with narrow habitat niches may be more vulnerable to habitat loss and point-source pollutants. We examined dietary and habitat niche breadthof common bottlenose dolphins, Tursiops truncatus truncatus, from three different nearshore sites in the Gulf of Mexico (GoM). Using stable isotopes, we determined proportional contributions of different prey groupsto dolphin diets at each site and through time at one site. We used satellite-linked telemetry at two sites todetermine habitat use and site ﬁdelity. Additionally, we examined the literature on cetacean diet, habitat use, movement, and IUCN status to determine relationships between niche breadth and population status for dif-ferent species. Dolphin diets varied among sites as available prey varied, but Perciformes ﬁsh were the most frequently consumed prey. At the site for which we had temporal data, dolphins consumed more cephalo-
Keywords:

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Ecology Ecology, Evolution, Behavior And Systematics
Source:

Ecosphere, 12(9)
DOI:

https://doi.org/10.1002/ecs2.3759
ISSN:

2150-8925;2150-8925;
Format:

PDF
Publisher:

Wiley
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by/3.0/
Rights Information:

CC BY
Compliance:

Library
Main Document Checksum:

[+]

urn:sha256:898ad3f2b4f19c1f04de5049dcdd92936c4d6b50dde1806a16b301935657be52
Download URL:

https://repository.library.noaa.gov/view/noaa/52885/noaa_52885_DS1.pdf
File Type:

Machine readable version (XML)

xml

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