The University of Southampton
University of Southampton Institutional Repository

The importance of sample size in marine megafauna tagging studies

The importance of sample size in marine megafauna tagging studies
The importance of sample size in marine megafauna tagging studies
Telemetry is a key, widely used tool to understand marine megafauna distribution, habitat use, behavior, and physiology; however, a critical question remains: “How many animals should be tracked to acquire meaningful data sets?” This question has wide‐ranging implications including considerations of statistical power, animal ethics, logistics, and cost. While power analyses can inform sample sizes needed for statistical significance, they require some initial data inputs that are often unavailable. To inform the planning of telemetry and biologging studies of marine megafauna where few or no data are available or where resources are limited, we reviewed the types of information that have been obtained in previously published studies using different sample sizes. We considered sample sizes from one to >100 individuals and synthesized empirical findings, detailing the information that can be gathered with increasing sample sizes. We complement this review with simulations, using real data, to show the impact of sample size when trying to address various research questions in movement ecology of marine megafauna. We also highlight the value of collaborative, synthetic studies to enhance sample sizes and broaden the range, scale, and scope of questions that can be answered.
1051-0761
Sequeira, A. M. M.
2876358f-5def-413e-98ac-6ecd4eda6652
Heupel, M. R.
97d56f91-6991-457b-ab19-1a709f026799
Lea, M.‐A.
f0216828-a37b-4ae0-8e6b-15910be56dc5
Eguíluz, V. M.
b3d2a2e7-3296-4a48-979c-aaabb1aa1617
Duarte, C. M.
5a4206d8-9dd5-4055-8f7d-f8e8b28d236c
Meekan, M. G.
10290d5a-6e6f-410b-ae99-62b0ef097d6a
Thums, M.
94e860cd-cb62-4665-8b67-4009620f8dc0
Calich, H. J.
5ed94ace-f9a1-4081-b79e-c762ffe19d36
Carmichael, R. H.
12d6dc60-150d-4200-8585-258c7b540790
Costa, D. P.
a524012f-d6d4-4437-a8dc-6ad7455a7a42
Ferreira, L. C.
c1422c7c-9726-45e0-8920-fa70973ffea1
Fernandéz‐gracia, J.
17e8fad9-8f80-428d-96e8-38ec6d056426
Harcourt, R.
3f236583-787d-4d0f-aeef-529bb9dce9da
Harrison, A.‐l.
c1805b6d-dfd0-421f-a684-0ab6045ba75f
Jonsen, I.
13a126bf-4220-4c29-8c3a-e90cb296145d
Mcmahon, C. R.
330561f0-1ee8-476b-853c-a1440856eb43
Sims, D. W.
7234b444-25e2-4bd5-8348-a1c142d0cf81
Wilson, R. P.
8c7289f8-8e43-4b2b-b1de-e3a733c48163
Hays, G. C.
b9ce7bc1-c701-4c1b-95bd-7452ed75f4ba
Sequeira, A. M. M.
2876358f-5def-413e-98ac-6ecd4eda6652
Heupel, M. R.
97d56f91-6991-457b-ab19-1a709f026799
Lea, M.‐A.
f0216828-a37b-4ae0-8e6b-15910be56dc5
Eguíluz, V. M.
b3d2a2e7-3296-4a48-979c-aaabb1aa1617
Duarte, C. M.
5a4206d8-9dd5-4055-8f7d-f8e8b28d236c
Meekan, M. G.
10290d5a-6e6f-410b-ae99-62b0ef097d6a
Thums, M.
94e860cd-cb62-4665-8b67-4009620f8dc0
Calich, H. J.
5ed94ace-f9a1-4081-b79e-c762ffe19d36
Carmichael, R. H.
12d6dc60-150d-4200-8585-258c7b540790
Costa, D. P.
a524012f-d6d4-4437-a8dc-6ad7455a7a42
Ferreira, L. C.
c1422c7c-9726-45e0-8920-fa70973ffea1
Fernandéz‐gracia, J.
17e8fad9-8f80-428d-96e8-38ec6d056426
Harcourt, R.
3f236583-787d-4d0f-aeef-529bb9dce9da
Harrison, A.‐l.
c1805b6d-dfd0-421f-a684-0ab6045ba75f
Jonsen, I.
13a126bf-4220-4c29-8c3a-e90cb296145d
Mcmahon, C. R.
330561f0-1ee8-476b-853c-a1440856eb43
Sims, D. W.
7234b444-25e2-4bd5-8348-a1c142d0cf81
Wilson, R. P.
8c7289f8-8e43-4b2b-b1de-e3a733c48163
Hays, G. C.
b9ce7bc1-c701-4c1b-95bd-7452ed75f4ba

Sequeira, A. M. M., Heupel, M. R., Lea, M.‐A., Eguíluz, V. M., Duarte, C. M., Meekan, M. G., Thums, M., Calich, H. J., Carmichael, R. H., Costa, D. P., Ferreira, L. C., Fernandéz‐gracia, J., Harcourt, R., Harrison, A.‐l., Jonsen, I., Mcmahon, C. R., Sims, D. W., Wilson, R. P. and Hays, G. C. (2019) The importance of sample size in marine megafauna tagging studies. Ecological Applications, 29 (6). (doi:10.1002/eap.1947).

Record type: Article

Abstract

Telemetry is a key, widely used tool to understand marine megafauna distribution, habitat use, behavior, and physiology; however, a critical question remains: “How many animals should be tracked to acquire meaningful data sets?” This question has wide‐ranging implications including considerations of statistical power, animal ethics, logistics, and cost. While power analyses can inform sample sizes needed for statistical significance, they require some initial data inputs that are often unavailable. To inform the planning of telemetry and biologging studies of marine megafauna where few or no data are available or where resources are limited, we reviewed the types of information that have been obtained in previously published studies using different sample sizes. We considered sample sizes from one to >100 individuals and synthesized empirical findings, detailing the information that can be gathered with increasing sample sizes. We complement this review with simulations, using real data, to show the impact of sample size when trying to address various research questions in movement ecology of marine megafauna. We also highlight the value of collaborative, synthetic studies to enhance sample sizes and broaden the range, scale, and scope of questions that can be answered.

Text
Sequeira_etal_SampleSizeMegafaunaTagging_EcolApplic2019 - Accepted Manuscript
Download (1MB)
Text
Sequeira-etal_SampleSizeMegafaunaTagging_EcolApplic2019 Accepted Manuscript
Restricted to Repository staff only
Request a copy

More information

Accepted/In Press date: 17 April 2019
e-pub ahead of print date: 10 June 2019
Published date: September 2019

Identifiers

Local EPrints ID: 434081
URI: https://eprints.soton.ac.uk/id/eprint/434081
ISSN: 1051-0761
PURE UUID: 85136a50-f205-4f86-b70f-8e5e8e1e8e62
ORCID for R. P. Wilson: ORCID iD orcid.org/0000-0001-7352-8912

Catalogue record

Date deposited: 11 Sep 2019 16:30
Last modified: 30 Nov 2019 01:34

Export record

Altmetrics

Contributors

Author: A. M. M. Sequeira
Author: M. R. Heupel
Author: M.‐A. Lea
Author: V. M. Eguíluz
Author: C. M. Duarte
Author: M. G. Meekan
Author: M. Thums
Author: H. J. Calich
Author: R. H. Carmichael
Author: D. P. Costa
Author: L. C. Ferreira
Author: J. Fernandéz‐gracia
Author: R. Harcourt
Author: A.‐l. Harrison
Author: I. Jonsen
Author: C. R. Mcmahon
Author: D. W. Sims
Author: R. P. Wilson ORCID iD
Author: G. C. Hays

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×