Skip to content

Research at St Andrews

Global coverage of cetacean line-transect surveys: status quo, data gaps and future challenges

Research output: Contribution to journalArticle

Author(s)

Kristin Kaschner, Nicola Jane Quick, Rebecca Lucy Jewell, Robert Williams, Catriona M Harris

School/Research organisations

Abstract

Knowledge of abundance, trends and distribution of cetacean populations is needed to inform marine conservation efforts, ecosystem models and spatial planning. We compiled a geo-spatial database of published data on cetacean abundance from dedicated visual line-transect surveys and encoded >1100 abundance estimates for 47 species from 430 surveys conducted worldwide from 1975-2005. Our subsequent analyses revealed large spatial, temporal and taxonomic variability and gaps in survey coverage. With the exception of Antarctic waters, survey coverage was biased toward the northern hemisphere, especially US and northern European waters. Overall, <25% of the world’s ocean surface was surveyed and only 6% had been covered frequently enough (≥ 5 times) to allow trend estimation. Almost half the global survey effort, defined as total area (km2) covered by all survey study areas across time, was concentrated in the Eastern Tropical Pacific (ETP). Neither the number of surveys conducted nor the survey effort had increased in recent years. Across species, an average of 10% of a species’ predicted range had been covered by at least one survey, but there was considerable variation among species. With the exception of three delphinid species, <1% of all species’ ranges had been covered frequently enough for trend analysis. We use a data-rich species, sperm whale, as an example to illustrate the challenges of using available data from line-transect surveys for the detection of trends or for spatial planning. Finally, we propose and contrast several field and analytical methods to fill in data gaps to improve future cetacean conservation management efforts.
Close

Details

Original languageEnglish
Article numbere44075
JournalPLoS One
Volume7
Issue number9
DOIs
Publication statusPublished - 12 Sep 2012

    Research areas

  • Abundance, Cetaceans, Data gaps, Visual line-transect surveys, Spatial planning, Trend analysis

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. Behavioral responses of individual blue whales (Balaenoptera musculus) to mid-frequency military sonar

    Southall, B., DeRuiter, S., Friedlaender, A., Stimpert, A., Goldbogen, J., Hazen, E., Casey, C., Fregosi, S., Cade, D., Allen, A., Harris, C. M., Schorr, G., Moretti, D., Guan, S. & Calambokidis, J., Mar 2019, In : Journal of Experimental Biology. 222, 15 p., jeb190637.

    Research output: Contribution to journalArticle

  2. Marine mammals and sonar: dose-response studies, the risk-disturbance hypothesis and the role of exposure context

    Harris, C. M., Thomas, L., Falcone, E., Hildebrand, J., Houser, D., Kvadsheim, P., Lam, F-P. A., Miller, P., Moretti, D. J., Read, A., Slabbekoorn, H., Southall, B. L., Tyack, P. L., Wartzok, D. & Janik, V. M., Jan 2018, In : Journal of Applied Ecology. 55, 1, p. 396-404

    Research output: Contribution to journalReview article

  3. Individual, ecological, and anthropogenic influences on activity budgets of long-finned pilot whales

    Isojunno, S., Sadykova, D., DeRuiter, S., Curé, C., Visser, F., Thomas, L., Miller, P. J. O. & Harris, C. M., Dec 2017, In : Ecosphere. 8, 12, 26 p., e02044.

    Research output: Contribution to journalArticle

  4. A simulation approach to assessing environmental risk of sound exposure to marine mammals

    Donovan, C. R., Harris, C. M., Milazzo, L., Harwood, J., Marshall, L. & Williams, R., Apr 2017, In : Ecology and Evolution. 7, 7, p. 2101-2111 11 p.

    Research output: Contribution to journalArticle

  5. Naval sonar disrupts foraging behaviour in humpback whales

    Sivle, L. D., Wensveen, P. J., Kvadsheim, P., Lam, F-P. A., Visser, F., Cure, C., Harris, C. M., Tyack, P. L. & Miller, P., 29 Dec 2016, In : Marine Ecology Progress Series. 562, p. 211-220

    Research output: Contribution to journalArticle

Related by journal

  1. PLoS ONE (Journal)

    Joanna Louise Kershaw (Member of editorial board)
    18 Mar 2019

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  2. PLoS ONE (Journal)

    Catharine Penelope Cross (Member of editorial board)
    1 Sep 2018 → …

    Activity: Publication peer-review and editorial work typesEditor of research journal

  3. PLoS ONE (Journal)

    Will Cresswell (Reviewer)
    23 May 2018

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  4. PLoS ONE (Journal)

    Barbara Dritschel (Member of editorial board)
    May 2018 → …

    Activity: Publication peer-review and editorial work typesEditor of research journal

  5. PLoS ONE (Journal)

    Simon Young (Reviewer)
    7 Jun 201719 Jun 2017

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

Related by journal

  1. Agreement between primary care and hospital diagnosis of schizophrenia and bipolar disorder: a cross-sectional, observational study using record linkage

    O’Neill, B., Kalia, S., Aliarzadeh, B., Moineddin, R., Fung, W. L. A., Sullivan, F., Maloul, A., Bernard, S. & Greiver, M., 7 Jan 2019, In : PLoS ONE. 14, 1, 15 p., e0210214.

    Research output: Contribution to journalArticle

  2. Animal behaviour in a human world: a crowdsourcing study on horses that open door and gate mechanisms

    Krueger, K., Esch, L. & Byrne, R., 26 Jun 2019, In : PLoS ONE. 14, 6, 20 p., e0218954.

    Research output: Contribution to journalArticle

  3. Correlates of social role and conflict severity in wild vervet monkey agonistic screams

    Mercier, S., Déaux, E. C., van de Waal, E., Bono, A. E. J. & Zuberbuhler, K., 1 May 2019, In : PLoS One. 14, 5, 20 p., e0214640.

    Research output: Contribution to journalArticle

  4. Molecular epidemiology and expression of capsular polysaccharides in Staphylococcus aureus clinical isolates in the United States

    Mohamed, N., Timofeyeva, Y., Jamrozy, D., Rojas, E., Hao, L., Silmon de Monerri, N. C., Hawkins, J., Singh, G., Cai, B., Liberator, P., Sebastian, S., Donald, R. G. K., Scully, I. L., Jones, C. H., Creech, C. B., Thomsen, I., Parkhill, J., Peacock, S. J., Jansen, K. U., Holden, M. T. G. & 1 othersAnderson, A. S., 14 Jan 2019, In : PLoS ONE. 14, 1, 33 p., e0208356.

    Research output: Contribution to journalArticle

  5. Orangutans (Pongo abelii) make flexible decisions relative to reward quality and tool functionality in a multi-dimensional tool-use task

    Laumer, I. B., Auersperg, A. M. I., Bugnyar, T. & Call, J., 13 Feb 2019, In : PLoS ONE. 14, 2, 13 p.

    Research output: Contribution to journalArticle

ID: 25387553