Individuality counts: A new comprehensive approach to foraging strategies of a tropical marine predator
Schwarz J, Mews S, De Rango E, Langrock R, Piedrahita P, Páez-Rosas D, Krüger O (2021)
Oecologia 195(2): 313–325.
Zeitschriftenaufsatz
| Veröffentlicht | Englisch
Download
Autor*in
Schwarz, JonasUniBi;
Mews, SinaUniBi;
De Rango, EugeneUniBi;
Langrock, RolandUniBi;
Piedrahita, Paolo;
Páez-Rosas, Diego;
Krüger, OliverUniBi
Einrichtung
Abstract / Bemerkung
Foraging strategies are of great ecological interest, as they have a strong impact on the fitness of an individual and can affect its ability to cope with a changing environment. Recent studies on foraging strategies show a higher complexity than previously thought due to intraspecific variability. To reliably identify foraging strategies and describe the different foraging niches they allow individual animals to realize, high-resolution multivariate approaches which consider individual variation are required. Here we dive into the foraging strategies of Galápagos sea lions (Zalophus wollebaeki), a tropical predator confronted with substantial annual variation in sea surface temperature. This affects prey abundance, and El Niño events, expected to become more frequent and severe with climate change, are known to have dramatic effects on sea lions. This study used high-resolution measures of depth, GPS position and acceleration collected from 39 lactating sea lion females to analyze their foraging strategies at an unprecedented level of detail using a novel combination of automated broken stick algorithm, hierarchical cluster analysis and individually fitted multivariate hidden Markov models. We found three distinct foraging strategies (pelagic, benthic, and night divers), which differed in their horizontal, vertical and temporal distribution, most likely corresponding to different prey species, and allowed us to formulate hypotheses with regard to adaptive values under different environmental scenarios. We demonstrate the advantages of our multivariate approach and inclusion of individual variation to reliably gain a deeper understanding of the adaptive value and ecological relevance of foraging strategies of marine predators in dynamic environments.
Erscheinungsjahr
2021
Zeitschriftentitel
Oecologia
Band
195
Ausgabe
2
Seite(n)
313–325
Urheberrecht / Lizenzen
ISSN
0029-8549
eISSN
1432-1939
Finanzierungs-Informationen
Open-Access-Publikationskosten wurden durch die Universität Bielefeld im Rahmen des DEAL-Vertrags gefördert.
Page URI
https://pub.uni-bielefeld.de/record/2950458
Zitieren
Schwarz J, Mews S, De Rango E, et al. Individuality counts: A new comprehensive approach to foraging strategies of a tropical marine predator. Oecologia. 2021;195(2):313–325.
Schwarz, J., Mews, S., De Rango, E., Langrock, R., Piedrahita, P., Páez-Rosas, D., & Krüger, O. (2021). Individuality counts: A new comprehensive approach to foraging strategies of a tropical marine predator. Oecologia, 195(2), 313–325. https://doi.org/10.1007/s00442-021-04850-w
Schwarz, Jonas, Mews, Sina, De Rango, Eugene, Langrock, Roland, Piedrahita, Paolo, Páez-Rosas, Diego, and Krüger, Oliver. 2021. “Individuality counts: A new comprehensive approach to foraging strategies of a tropical marine predator”. Oecologia 195 (2): 313–325.
Schwarz, J., Mews, S., De Rango, E., Langrock, R., Piedrahita, P., Páez-Rosas, D., and Krüger, O. (2021). Individuality counts: A new comprehensive approach to foraging strategies of a tropical marine predator. Oecologia 195, 313–325.
Schwarz, J., et al., 2021. Individuality counts: A new comprehensive approach to foraging strategies of a tropical marine predator. Oecologia, 195(2), p 313–325.
J. Schwarz, et al., “Individuality counts: A new comprehensive approach to foraging strategies of a tropical marine predator”, Oecologia, vol. 195, 2021, pp. 313–325.
Schwarz, J., Mews, S., De Rango, E., Langrock, R., Piedrahita, P., Páez-Rosas, D., Krüger, O.: Individuality counts: A new comprehensive approach to foraging strategies of a tropical marine predator. Oecologia. 195, 313–325 (2021).
Schwarz, Jonas, Mews, Sina, De Rango, Eugene, Langrock, Roland, Piedrahita, Paolo, Páez-Rosas, Diego, and Krüger, Oliver. “Individuality counts: A new comprehensive approach to foraging strategies of a tropical marine predator”. Oecologia 195.2 (2021): 313–325.
Alle Dateien verfügbar unter der/den folgenden Lizenz(en):
Creative Commons Namensnennung 4.0 International Public License (CC-BY 4.0):
Volltext(e)
Access Level
Open Access
Zuletzt Hochgeladen
2021-02-19T07:12:02Z
MD5 Prüfsumme
8807abc20d8e8ee93cae79a55e7a247d
Daten bereitgestellt von European Bioinformatics Institute (EBI)
Zitationen in Europe PMC
Daten bereitgestellt von Europe PubMed Central.
References
Daten bereitgestellt von Europe PubMed Central.
Material in PUB:
Teil dieser Dissertation
How to behave in a changing world. Development and consequences of stable behavioural differences in the Galápagos sea lion
Schwarz J (2022)
Bielefeld: Universität Bielefeld.
Schwarz J (2022)
Bielefeld: Universität Bielefeld.
Export
Markieren/ Markierung löschen
Markierte Publikationen
Web of Science
Dieser Datensatz im Web of Science®Quellen
PMID: 33491108
PubMed | Europe PMC
Suchen in