Susannah Calderan


        Susannah Calderan on fieldwork with acoustic probe

Honorary Research Fellow in Marine Mammal Ecology

I am a marine mammal ecologist, with particular interests in cetacean acoustics and anthropogenic impacts, such as fisheries bycatch and underwater noise.

My work involves developing new visual and acoustic survey and analysis techniques for localising and tracking cetaceans at a range of spatial scales.

As a SAMS Fellow I am a member of the SAMS CETRENS research group and provide advice and training on acoustic surveys and analysis.

Contact details:
  • susannah.calderan@sams.ac.uk
  • +44 (0)1397 772 544
  • +44 (0)7989 971859


  • susannahcalderan

Summary of research interests

  • >Cetacean acoustics: long-range tracking of baleen whales, in particular Antarctic blue whales
  • >Research on porpoise species, especially harbour porpoise and vaquita
  • >Anthropogenic impacts (underwater noise and fisheries bycatch)

 

List of current research projects

Part of the Australian Antarctic Division-based team pioneering new techniques in long-range blue whale acoustic tracking

Part of British Antarctic Survey team researching Southern right whales on feeding grounds in South Georgia

Member of PAMTech training organisation providing acoustic data collection and analysis training

Bycatch consultancy for WWF on bycatch mitigation methodologies and UK harbour porpoise bycatch

Member of Scientific Committee for Hebridean Whale and Dolphin Trust

 

List of highlight past projects

Working with US and Mexican government on research surveys for Mexico’s critically-endangered porpoise, the vaquita

Participation in offshore cetacean visual and acoustic surveys suchs and SCANSII and SCANSIII, surveys for NOAA, and Australian government

Peer-reviewed publications

Findlay, C.R., Ripple, H.D., Coomber, F., Froud, K., Harries, O., van Geel, N.C.F., Calderan, S.V., Benjamins, S., Risch, D., Wilson, B. (2018) Mapping widespread and increasing underwater noise pollution from acoustic deterrent devices. Marine Pollution Bulletin, 135, 1042-1050

Miller, B., Wotherspoon, S., Rankin, S., Calderan, S., Leaper, R., Keating, J.L. (2018) Estimating drift of Directional Sonobuoys from Acoustic Bearings. Journal of the Acoustical Society of America, 143, EL25

Miller, B.S., Calderan, S., Gillespie, D.,  Weatherup, G., Leaper, R., Collins, K., Double, M.C. (2016) Software for real-time localization of baleen whale calls using directional sonobuoys: a case study on Antarctic blue whales. Journal of the Acoustical Society of America, 139, EL83-EL89

Priyadarshana, T., Randage, S.M., Alling, A., Calderan, S., Gordon, J., Leaper, R. and Porter, L. (2016) Distribution patterns of blue whale (Balaenoptera musculus) and shipping off southern Sri Lanka. Regional Studies in Marine Science 3

Leaper, R., Calderan, S. and Cooke, J. (2015) A Simulation Framework to Evaluate the Efficiency of Using Visual Observers to Reduce the Risk of Injury from Loud Sound Sources. Aquatic Mammals 41(4)

Miller, B., Barlow, J., Calderan, S., Collins, K., Leaper, R., Olson, P., Ensor, P., Peel, D, Donnelly, D., Andrews-Goff, V., Olavarria, C., Owen, K., Rekdahl, M., Schmitt, N., Wadley, V., Gedamke J., Gales, N., Double, M. (2015) Validating the reliability of passive acoustic localisation: a novel method for encountering rare and remote Antarctic blue whales. Endangered Species Research, 26(3)

Calderan, S., Miller, B., Collins, K., Ensor, P., Double, M. , Leaper, R., Barlow, J. (2014) Low frequency vocalisations of sei whales (Balaenoptera borealis) in the Southern Ocean. Journal of the Acoustical Society of America, 136, EL418

Miller, B., Leaper, R., Calderan, S., Gedamke, J. (2014) Red shift, blue shift: Investigating Doppler shifts, blubber thickness and migration as explanations of seasonal variation in the tonality of Antarctic blue whale song. PLoS ONE, 9(9)

Miller, B., Collins, K., Barlow, J., Calderan, S., Leaper, R., McDonald, M., Ensor, P., Olson, P., Olavarria, C., Double, M. (2014) Blue whale vocalizations recorded around New Zealand: 1964 – 2013. Journal of the Acoustical Society of America, 135(3)

Booth C.G., Embling C., Gordon J., Calderan S.V., Hammond P.S. (2013) Habitat preferences and distribution of the harbour porpoise Phocoena phocoena west of Scotland. Marine Ecology Progress Series, 478 

Weir, C.R., Calderan, S., Unwin, M. and Paulatto, M. (2011) Cetacean encounters around the island of Montserrat (Caribbean Sea) during 2007 and 2010, including new species and state records. Marine Biodiversity Records, 4

Dolman, S.J., Pinn, E., Reid, R.J., Barley, J.P., Deaville, R., Jepson, P.D., O’Connell, M., Berrow, S., Penrose, R.S., Stevick, P.T., Calderan, S., Robinson, K.P., Brownell, R.L. and Simmonds, M.P (2010) A note on the unprecedented strandings of 56 deep-diving whales along the UK and Irish coast. Marine Biodiversity Records, 3

Weir, C. R., C. D. MacLeod and S. Calderan (2009) Fine-scale habitat use by white-beaked and common dolphins in the Minch (Scotland, UK): evidence for interspecific competition or coexistence? Journal of the Marine Biological Association of the United Kingdom, 89(5)

 

Other publications

Reports

Leaper, R., Calderan, S. (2017) Underwater sound and marine wildlife: a review of recent information and developments relevant to Antarctic waters. Report prepared for SCAR

Calderan, S., Leaper, R. (2017) Investigations of seafood imports into the US which may be subject to regulation under the MMPA cetacean bycatch rule. Report prepared for WWF

Wilson, B., Benjamins, S., Elliott, J., Gordon, J., Macaulay, J., Calderan, S. Van Geel, N. (2014) Estimates of collision risk of harbour porpoises and marine renewable energy devices at sites of high tidal-stream energy. Report prepared for the Scottish Government

Calderan, S., Wittich, A., Harries, O., Gordon, J., Leaper, R. (2013) White-beaked dolphin and Risso’s dolphin click characteristics and the potential for classification and species identification. Scottish Natural Heritage Commissioned Report No.624

Calderan, S.V. (2012) Feasibility of integrating DIFAR sonobuoy software into PAMGuard. Report prepared for the Australian Antarctic Division

Calderan, S.V. (2012) Investigation of harbour porpoise presence and temporal habitat use in south Scapa Flow, Orkney, using TPODs. Report prepared for The Environmental Unit, Marine Services, Orkney Islands Council 

HWDT (2011) Distribution of harbour porpoises (Phocoena phocoena) west of Scotland (2009 – 2010). Report prepared for the Scottish Government

Gordon, J., Leaper, R., Gillespie, D., Pierpoint, C., Calderan, S., Macauley, J., Gordon, T. (2011) Studies of Marine Mammals in Welsh High Tidal Energy Waters. Report prepared by Ecologic UK Ltd for the Welsh Assembly Government. Project number JER3688

Northridge, S.P., Gordon, J.G., Booth, C., Calderan, S., Cargill, A., Coram, A., Gillespie, D., Lonergan, M. and Webb, A. (2010.) Assessment of the impacts and utility of acoustic deterrent devices. Final Report to the Scottish Aquaculture Research Forum, Project Code SARF044

Mandleberg, L., Booth, C., Gordon, J. and Calderan, S.V. (2009) Marine mammal species and basking sharks occurring in the Sound of Islay study region. Report prepared by Hebridean Whale and Dolphin Trust for ScottishPower Renewables

SMRU Ltd (2007) Assessment of the potential for acoustic deterrents to mitigate the impact on marine mammals of underwater noise arising from the construction of offshore wind farms. Commissioned by COWRIE Ltd

Calderan, S.V., Booth, C.G., Stevick, P.T, Gordon, J. (2007) Distribution of harbour porpoise (Phocoena phocoena) in the Sound of Mull in relation to ADD use: 2003 – 2006. Report prepared by HWDT for Scottish Natural Heritage and Scottish Sea Farms

Goold J.C., Calderan S.V. and Goold L.L. (2005). Baseline visual and acoustic marine mammal surveys at Gwynt y Môr. Final Report to npower renewables, June 2005. University of Wales, Bangor

 

Conference presentations

Jackson, J.A., Carroll, E.L., Kennedy, A., Leaper, R., Calderan, S., Leslie, M.S., Andriolo, A., Stepien, E., Zerbini, A.N., Miller, B.S. Kelly, N., Stowasser, G., Cheeseman, T. Sightings and acoustic records of right whales collected in South Georgia (Islas Georgias del Sur) waters January-February 2018 Paper SC/67b/SH/20 presented to the IWC Scientific Committee, 2018, Bled, Slovenia

Leaper, R., Calderan, S. Review of methods used to reduce risks of cetacean bycatch and entanglements. Paper SC/67a/HIM01 presented to the IWC Scientific Committee, May 2017, Bled, Slovenia and

Information Paper UNEP/CMS/COP12/Inf.15 to the 12th Meeting of the Conference of Parties to Convention on Migratory Species (CMS), Manila October 2017

Miller, B.S., Miller, E., Calderan, S., Leaper, R., Stafford, K., Sirovic, A., Rankin, S., Findlay, K., Samaran, F., van Opzeeland, I., McCauley, R., Gavrilov, A., Harris, D., Gedamke, J., Bell, E., Andrews-Goff, V., Double, M. Circumpolar acoustic mapping of endangered Southern Ocean whales: Voyage report and preliminary results for the 2016/17 Antarctic Circumnavigation Expedition. Paper SC/67a/SH/ presented to the IWC Scientific Committee, May 2017, Bled, Slovenia

Ryan C., Leaper R., Evans P.G.H., Dyke K., Robinson K.P., Haskins G.N., Calderan S., van Geel N., Harries O., Froud K., Brownlow A. & Jack A. Entanglement: an emerging threat to humpback whales in Scottish waters. Paper SC/66b/HIM/01 presented to the International Whaling Commission Scientific Committee, May 2017, Bled, Slovenia

Calderan, S., Miller, B.S., Gillespie, D., Weatherup, G. and Double, M.C. Software for the localisation of baleen whale calls using DIFAR sonobouys: an update on real-time use of PAMGUARD DIFAR software. 9pp. Paper SC/66a/SH15 presented to the IWC Scientific Committee, May 2015, San Diego, California

Double, M.C., Miller, B.S., Leaper, R., Olson, P., Cox, M.J., Miller, E., Calderan, S., Collins, K., Donnelly, D., Ensor, P., Goetz, K., Schmitt, N., Andrews-Goff, V., Bell, E.M. and O’Driscoll, R. Cruise report on blue whale research from the NZ/Aus Antarctic Ecosystems Voyage 2015 of the Southern Ocean Research Partnership. Paper SC/66a/SH07 presented to the IWC Scientific Committee, May 2015, San Diego, California 

Leaper, R., Calderan, S. Bibliography of papers evaluating ship strike mitigation measures relevant to large vessels that have been implemented through IMO or national measures. Paper SC/66a/HIM04 presented to the IWC Scientific Committee, May 2015, San Diego, California

Olson, P.A., Schmitt, N., Ensor, P., Collins, K., Donnelly, D., Leaper, R., Calderan, S., Miller, B.S., Goetz, K. and Double, M.C. Photo-identification of Antarctic blue whales during the New Zealand-Australia Antarctic Ecosystems Voyage 2015. Paper SC/66a/SH26 presented to the IWC Scientific Committee, May 2015, San Diego, California

Priyadarshana, T., Randage, S.M., Alling, A., Calderan, S., Gordon, J., Gordon, T., Leaper, R., Lewis, T.P., Porter, L. and Van Thillo, M. An update on work related to ship strike risk to blue whales off southern Sri Lanka. Paper SC/66a/HIM09 presented to the IWC Scientific Committee, May 2015, San Diego, California

Miller, B.S., Gillespie, D., Weatherup, G., Calderan, S. and Double, M.C.  Software for the localisation of baleen whale calls using DIFAR sonobouys: PAMGuard DIFAR. Paper SC/65b/SH06 presented to the IWC Scientific Committee, May 2014, Bled, Slovenia

Miller, B.S., Gedamke, J., Calderan, S., Collins, K., Johnson, C., Miller, E., Samaran, F., Smith, J. and Double, M.C. Accuracy and precision of DIFAR localisation systems: calibrations and comparative measurements from three SORP voyages. Paper SC/65b/SH08 presented to the IWC Scientific Committee, May 2014, Bled, Slovenia

Miller, B.S., Wotherspoon, S., Calderan, S., Leaper, R. and Double, M.C. Estimating drift of DIFAR sonobouys when localising blue whales. Paper SC/65b/SH09 presented to the IWC Scientific Committee, May 2014, Bled, Slovenia 

Miller, B.S., Leaper, R., Calderan, S., Collins, K. and Double, M. Source levels of Antarctic blue whale calls measured during the 2013 Antarctic blue whale voyage: preliminary results. Paper SC/65b/SH11 presented to the IWC Scientific Committee, May 2014, Bled, Slovenia

Priyadarshana, T., Randage, S.M., Alling, A., Calderan, S., Gordon, J., Leaper, R. and Porter, L. Preliminary results of surveys to investigate overlap between shipping and blue whale distribution off southern Sri Lanka. Paper SC/65b/HIM06 presented to the IWC Scientific Committee, May 2014, Bled, Slovenia

Miller, B., Kelly, N., Peel, D., Barlow, J., Calderan, S., Collins, K., Leaper, R., Olson, P., Ensor, P., Andrews-Goff, V., Wadley, V., Lindsay, M., Double, M. Real time tracking of Antarctic Blue Whales in the Southern Ocean: towards a precise abundance estimate. SMM Biennial Conference on the Biology of Marine Mammals, New Zealand 2013

Collins, K., Miller, B., Ensor, P., Olson, P., Calderan, S., Leaper, R., Barlow, J., McDonald, M., Olavarria, C., Childerhouse, S., Constantine, R., Van de Linde, M., Double, M. New Zealand Blue Whales: distribution, confirmation of acoustic identity, and a nascent photographic identification catalogue. SMM Biennial Conference on the Biology of Marine Mammals, New Zealand 2013

Miller, B.S., Barlow, J., Calderan, S., Collins, K., Leaper, R., Kelly, N., Peel, D., Olson, P., Ensor, P. and Double, M.C. Long-range acoustic tracking of Antarctic blue whales. Paper SC/65a/SH18 presented to the IWC Scientific Committee, June 2013, Jeju Island, Republic of Korea 

Miller, B.S., Collins, K., Barlow, J., Calderan, S., Leaper, R., Mcdonald, M., Ensor, P., Olson, P., Olavarria, C. and Double, M.C. Blue whale songs recorded around South Island, New Zealand. Paper SC/65a/SH19 presented to the IWC Scientific Committee, June 2013, Jeju Island, Republic of Korea

Double, M.C., Barlow, J., Miller, B.S., Olson, P., Andrews-Goff, V., Leaper, R., Ensor, P., Kelly, N., Wadley, V., Lindsay, M., Peel, D., Calderan, S., Collins, K., Davidson, M., Deacon, C., Donnelly, D., Olavarria, C., Owen, K., Rekdahl, M.L., Schmitt, N. and Gales, N. Cruise report of the 2013 Antarctic blue whale voyage of the Southern Ocean Research Partnership. Paper SC/65a/SH21 presented to the IWC Scientific Committee, June 2013, Jeju Island, Republic of Korea

Calderan, S., Wittich, A., Harries, O., Gordon, J., Leaper, R. Identifying white-beaked dolphins from click characteristics. ECS/ASCOBANS/WDC workshop: Towards a conservation strategy for white-beaked dolphins in the Northeast Atlantic. 27th Annual Conference of the European Cetacean Society Conference. Setubal, Portugal 2013

Harries, O.R., Weir, C.R., Calderan, S.V., van Geel, N.C.F., Shrimpton, J. & Gordon, J.C.D. The role of spatial modelling in the potential management of a priority Scottish cetacean species, the white-beaked dolphin (Lagenorhynchus albirostris). 26th Annual Conference of the European Cetacean Society Conference. Galway, Republic of Ireland, 2012

Booth, C.G., Calderan, S.V., Gordon, J., Van Geel, N.C.F. Marine noise: the changing nature of Scotland’s underwater soundscape and possible impacts on marine mammals. SNH Conference: The Changing Nature of Scotland. Perth, Scotland, September 2009

Booth, C.G., Gillespie, D., Calderan, S.V., Hammond, P.S., Stevick, P., Gordon, J. Investigating the sound fields of Airmar seal scarer devices and the potential impacts on harbour porpoises (Phocoena phocoena) SMM Biennial Conference on the Biology of Marine Mammals, Québec City, Canada, 2009

Dolman, S.J. Reid, R.J., Barley, J.P., Deaville, R., Jepson, P.D., O’Connell, M., Berrow, S., Penrose, R.S., Pinn, E., Stevick, P.T., Calderan, S., Robinson, K.P., Doyle, T.K., Brownell, R.L.. and Simmonds, M.P. A preliminary note on the unprecedented strandings of 45 deep-diving odontocetes along the UK and Irish coast between January and April 2008. Paper SC/60/E5 presented to the IWC Scientific Committee, June 2008, Santiago, Chile

Mandleberg, L.C., Calderan, S.V., Stevick, P.T., Embling, C.B., Shrimpton, J., Booth, C.G. Cetacean diversity in north west Scotland: an oceanographic perspective. 22nd Annual Conference of the European Cetacean Society, Egmond aan Zee, The Netherlands, 2008

Weir, C.R., Calderan, S.V.M., Unwin, R. L. Pitman, C. Booth, T. Photopoulos and K. Robinson. White-beaked dolphin (Lagenorhynchus acutus) occurrence in the Minch (Scotland, UK) during August 2007. 22nd Annual Conference of the European Cetacean Society, Egmond aan Zee, The Netherlands, 2008

Calderan, S.V., Stevick, P.T., Mandleberg, L.C. Density estimates of marine litter in a key cetacean habitat in North West Scotland. 21st Annual Conference of the European Cetacean Society, San Sebastián, Spain, 2007

Stevick, P.T., Calderan, S.V., Speedie, C., Shrimpton, J., Embling, C.B. A trophic shift off West Scotland: minke whales and basking sharks. 21st Annual Conference of the European Cetacean Society, San Sebastián, Spain, 2007

Wharam, J.C., Harland, E.J., Calderan, S.V. (2005) An assessment of the performance achieved by two T-POD units. 19th Annual Conference of the European Cetacean Society, La Rochelle, France, 2005

Calderan, S.V. (2004) Fine-scale temporal distribution by harbour porpoise (Phocoena phocoena) in North Wales: acoustic and visual surveys. 18th Annual Conference of the European Cetacean Society, Kolmården, Sweden, 2004