KOPS - The Institutional Repository of the University of Konstanz

Galápagos sperm whales (Physeter macrocephalus) : waxing and waning over three decades

Galápagos sperm whales (Physeter macrocephalus) : waxing and waning over three decades

Cite This

Files in this item

Files Size Format View

There are no files associated with this item.

CANTOR, Mauricio, Ana EGUIGUREN, Godfrey MERLEN, Hal WHITEHEAD, 2017. Galápagos sperm whales (Physeter macrocephalus) : waxing and waning over three decades. In: Canadian Journal of Zoology. Canadian Science Publishing. 95(9), pp. 645-652. ISSN 0008-4301. eISSN 1480-3283. Available under: doi: 10.1139/cjz-2016-0266

@article{Cantor2017-09Galap-50154, title={Galápagos sperm whales (Physeter macrocephalus) : waxing and waning over three decades}, year={2017}, doi={10.1139/cjz-2016-0266}, number={9}, volume={95}, issn={0008-4301}, journal={Canadian Journal of Zoology}, pages={645--652}, author={Cantor, Mauricio and Eguiguren, Ana and Merlen, Godfrey and Whitehead, Hal} }

<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/50154"> <dcterms:issued>2017-09</dcterms:issued> <dc:creator>Whitehead, Hal</dc:creator> <dc:creator>Eguiguren, Ana</dc:creator> <dc:creator>Merlen, Godfrey</dc:creator> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/50154"/> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-07-07T11:34:05Z</dc:date> <dc:contributor>Whitehead, Hal</dc:contributor> <dc:rights>terms-of-use</dc:rights> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/28"/> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-07-07T11:34:05Z</dcterms:available> <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/> <dc:creator>Cantor, Mauricio</dc:creator> <dc:contributor>Merlen, Godfrey</dc:contributor> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dcterms:abstract xml:lang="eng">While population sizes and structures naturally fluctuate over time, rapid within-generation changes are usually driven by shifts in habitat quality and (or) abrupt mortality. We evaluate how sperm whales (Physeter macrocephalus L., 1758 = Physeter catodon L., 1758) responded to the dynamic habit off the Galápagos Islands over 30 years, relating it to variation in prey availability and whaling operations in the tropical Pacific. In the 1980s, males and females were commonly sighted foraging and socializing in the northwest of the archipelago. Sightings decreased during the 1990s; by the 2000s, they became very rare: occasional single foraging males were sighted and females abandoned the archipelago. In the 2010s, whales return to the southern waters, in large groups with apparently more breeding males and calves. The waxing and waning of Galápagos sperm whales are likely caused by environmental shifts together with ripple effects of whaling. Their patchy prey are influenced by variation in sea temperature and productivity, which drives movements of whales in and out of the archipelago. Whaling may have aggravated these movements by leaving an attractive surplus of prey in coastal waters depleted of whales. These findings highlight the magnitude of spatiotemporal scales used by sperm whales and the consequent challenges of assessing population dynamics of long-lived, mobile pelagic species.</dcterms:abstract> <dc:language>eng</dc:language> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/28"/> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:contributor>Eguiguren, Ana</dc:contributor> <dc:contributor>Cantor, Mauricio</dc:contributor> <dcterms:title>Galápagos sperm whales (Physeter macrocephalus) : waxing and waning over three decades</dcterms:title> </rdf:Description> </rdf:RDF>

This item appears in the following Collection(s)

Search KOPS


My Account