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Modelling fine-scale distribution and relative abundance of harbour porpoises in the Southern Bight of the North Sea using platform-of-opportunity data

Published online by Cambridge University Press:  24 April 2020

Thibaut Bouveroux Open the ORCID record for Thibaut Bouveroux [Opens in a new window] ,
James J. Waggitt ,
Anissa Belhadjer ,
Pierre W. Cazenave ,
Peter G.H. Evans  and
Jeremy J. Kiszka
Thibaut Bouveroux*
Affiliation:
Observatoire pour la Conservation et l’Étude des Animaux et Milieux Marins (OCEAMM), Zuydcoote, France Dauphin Island Sea Lab, Dauphin Island, 36528Alabama, USA University of South Alabama, Department of Marine Sciences, Mobile, 36688, Alabama, USA
James J. Waggitt
Affiliation:
School of Ocean Sciences, Bangor University, Wales, UK
Anissa Belhadjer
Affiliation:
Observatoire pour la Conservation et l’Étude des Animaux et Milieux Marins (OCEAMM), Zuydcoote, France
Pierre W. Cazenave
Affiliation:
Plymouth Marine Laboratory, Prospect Place, Plymouth, UK
Peter G.H. Evans
Affiliation:
School of Ocean Sciences, Bangor University, Wales, UK Sea Watch Foundation, Isle of Anglesey, Wales, UK
Jeremy J. Kiszka
Affiliation:
Observatoire pour la Conservation et l’Étude des Animaux et Milieux Marins (OCEAMM), Zuydcoote, France Department of Biological Sciences, Coastlines and Oceans Division, Institute of Environment, Florida International University, North Miami, USA
*
Author for correspondence: Thibaut Bouveroux, E-mail: [email protected]
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Abstract

Over the last 25 years, the harbour porpoise (Phocoena phocoena) has made a significant return to the Southern Bight of the North Sea and the English Channel due to a shift in distribution from northerly regions. Although the ecological drivers of this return are unclear, this species faces multiple threats in the region, including by-catch and habitat degradation. Ferry-based surveys were conducted year-round between November 2011 and June 2014 to assess the influence of environmental parameters upon the spatiotemporal distribution and relative abundance of harbour porpoises in the Southern Bight of the North Sea. A total of 1450 sightings of harbour porpoises were recorded during the 100 round-trip surveys carried out between Dunkirk (France) and Dover (England). Inter-annual and monthly variations in group size were observed, with largest groups recorded in 2014 (mean = 2.02) and in January (mean = 2.32). The relative abundance showed significant seasonal variation, with peaks recorded during winter months. An inter-annual increasing relative abundance was recorded during the study period. There was a seasonally dependent association with environmental variables, particularly depth, seabed roughness and current speed. Finally, predictions suggest large increases of the relative abundance in offshore habitats during winter months and over the study period.

Keywords

AbundancecetaceansEnglish Channelferry-based surveysGeneral Linear Modelsgroup sizehabitat usePhocoena phocoena
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 100 , Issue 3 , May 2020 , pp. 481 - 489
Copyright
Copyright © Marine Biological Association of the United Kingdom 2020

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References

Acott, TG and Urquhart, J (2014) Sense of place and socio-cultural values in fishing communities along the English Channel. In Urquhart, J, Acott, TG, Symes, D and Zhao, M (eds) Social Issues in Sustainable Fisheries Management. Dordrecht: Springer, pp. 257–277.CrossRefGoogle Scholar
ASCOBANS (2009) Conservation Plan for Harbour Porpoises (Phocoena phocoena) in the North Sea. ASCOBANS MOP6/Doc.7-02 (AC).Google Scholar
Bahe, S, Sumser-Lupson, K, Rossiter, A, Kinch, M, Pardo, F and Lewey, S (2007) The Management of Maritime Pollution in the English Channel: A Comparative Analysis of Risks and Contingency Planning. Plymouth: Espace Manche Development Initiative.Google Scholar
Borges, L and Evans, PGH (1997) Spatial distribution of the harbour porpoise and fish prey and their associations in southeast Shetland, Scotland. European Research on Cetaceans 10, 262–265.Google Scholar
Booth, CG (2019) Food for thought: harbor porpoise foraging behaviour and diet inform vulnerability to disturbance. Marine Mammal Science 36, 1–14.Google Scholar
Camphuysen, CJ (2004) The return of the harbour porpoise (Phocoena phocoena) in Dutch coastal waters. Lutra 47, 135–144.Google Scholar
Camphuysen, CJ (2011) Recent trends and spatial patterns in nearshore sightings of harbour porpoises (Phocoena phocoena) in the Netherlands (Southern Bight, North Sea), 1990–2010. Lutra 54, 39–47.Google Scholar
Cazenave, PW, Torres, R and Allen, JI (2016) Unstructured grid modelling of offshore wind farm impacts on seasonally stratified shelf seas. Progress in Oceanography 145, 25–41.CrossRefGoogle Scholar
Cox, SL, Embling, CB, Hosegood, PJ, Votier, SC and Ingram, SN (2018) Oceanographic drivers of marine mammal and seabird habitat-use across shelf-seas: a guide to key features and recommendations for future research and conservation management. Estuarine, Coastal and Shelf Science 212, 294–310.CrossRefGoogle Scholar
Dars, C, Dabin, W, Demaret, F, Dorémus, G, Meheust, E, Mendez-Fernandez, P, Peltier, H, Spitz, J and Van Canneyt, O (2018) Les échouages de mammifères marins sur le littoral français en 2017. Rapport scientifique de l'Observatoire Pelagis, Université de La Rochelle et CNRS.Google Scholar
Diaz-Lòpez, B and Methion, S (2018) Does interspecific competition drive patterns of habitat use and relative density in harbour porpoises? Journal of Marine Biology 165, 92.CrossRefGoogle Scholar
Embling, CB, Gillibrand, P, Gordon, J, Shrimpton, J, Stevick, PT and Hammond, PS (2010) Using habitat models to identify suitable sites for marine protected areas for harbour porpoises (Phocoena phocoena). Biological Conservation 143, 267–279.CrossRefGoogle Scholar
Evans, PGH and Bjørge, A (2013) Impacts of climate change on marine mammals. Marine Climate Change Impacts Partnership (MCCIP). Science Review 2013, 134–148.Google Scholar
Evans, PGH and Borges, L (1995) Associations between porpoises, seabirds and their prey in south-east Shetland, Scotland. European Research on Cetaceans 9, 173–178.Google Scholar
Evans, PGH, Anderwald, P and Baines, ME (2003) UK Cetacean Status Review Report to English Nature and the Countryside Council for Wales. Oxford: Sea Watch Foundation.Google Scholar
Evans, PGH, Pierce, GJ, Veneruso, G, Weir, CR, Gibas, D, Anderwald, P and Santos, MB (2015) Analysis of long-term effort-related land-based observations to identify whether coastal areas of harbour porpoise and bottlenose dolphin have persistent high occurrence and abundance. JNCC Report no. 543.Google Scholar
Frederiksen, M, Elston, DA, Edwards, M, Mann, AD and Wanless, S (2011) Mechanisms of long-term decline in size of lesser sandeels in the North Sea explored using a growth and phenology model. Marine Ecology Progress Series 432, 137–147.CrossRefGoogle Scholar
Geelhoed, SCV and Scheidat, M (2018) Abundance of harbour porpoises (Phocoena phocoena) on the Dutch Continental Shelf, aerial surveys 2012–2017. Lutra 61, 127–136.Google Scholar
Geelhoed, SCV, Scheidat, M, van Bemmelen, RSA and Aarts, G (2013) Abundance of harbour porpoises (Phocoena phocoena) on the Dutch Continental Shelf, aerial surveys in July 2010–March 2011. Lutra 56, 45–57.Google Scholar
Gentilhomme, V and Lizon, F (1998) Seasonal cycle of nitrogen and phytoplankton in biomass in a well-mixed coastal system (Eastern English Channel). Hydrobiologia 361, 191–199.CrossRefGoogle Scholar
Gilles, A, Scheidat, M and Siebert, U (2009) Seasonal distribution of harbour porpoises and possible interference of offshore wind farms in the German North Sea. Marine Ecology Progress Series 383, 295–307.CrossRefGoogle Scholar
Gilles, A, Adler, S, Kaschner, K, Scheidat, M and Siebert, U (2011) Modelling harbour porpoise seasonal density as a function of the German Bight environment: implications for management. Endangered Species Research 14, 157–169.CrossRefGoogle Scholar
Gilles, A, Viquerat, S, Becker, EA, Forney, KA, Geelhoed, SCV, Haelters, J, Nabe-Nielsen, J, Scheidat, M, Siebert, U, Sveegaard, S, van Beest, FM, van Bemmele, R and Aarts, G (2016) Seasonal habitat-based density models for a marine top predator, the harbour porpoise, in a dynamic environment. Ecosphere (Washington, DC) 7, e01367.Google Scholar
Haelters, J, Kerckhof, F, Jacques, TG and Degraer, S (2011) The harbour porpoise Phocoena phocoena in the Belgian part of the North Sea: trends in abundance and distribution. Belgian Journal of Zoology 141, 75–84.Google Scholar
Haelters, J, Kerckhof, F and Jauniaux, T (2018) Strandings of cetaceans in Belgium from 1995 to 2017. Lutra 61, 107–126.Google Scholar
Hammond, PS, Berggren, P, Benke, H, Borchers, DL, Collet, A, Heide-Jorgensen, MP, Heimlich, S, Hiby, AR, Leopold, MF and Øien, N (2002) Abundance of harbour porpoise and other cetaceans in the North Sea and adjacent waters. Journal of Applied Ecology 39, 361–376.CrossRefGoogle Scholar
Hammond, PS, MacLeod, K, Berggren, P, Borchers, D, Burt, L, Canadas, A, Desportes, G, Donovan, G, Gilles, A, Gillespie, D, Gordon, J, Hiby, L, Kuklik, I, Leaper, R, Lehnert, K, Leopold, M, Lovell, P, Oien, N, Paxton, C, Ridoux, V, Rogan, E, Samarra, F, Scheidat, M, Sequeira, M, Siebert, U, Skov, H, Swift, R, Tasker, M, Teilmann, J, Van Canneyt, O and Vazquez, J (2013) Cetacean abundance and distribution in European Atlantic shelf waters to inform conservation and management. Biological Conservation 164, 107–122.CrossRefGoogle Scholar
Hammond, PS, Lacey, C, Gilles, A, Viquerat, S, Börjesson, P, Macleod, K, Ridoux, V, Santos, MB, Scheidat, M, Teilmann, J, Vingada, J and Øien, N (2017) Estimates of cetacean abundance in European Atlantic waters in summer 2016 from the SCANS-III aerial and shipboard surveys. St Andrews: Sea Mammal Research Unit.Google Scholar
Hiddink, JG, Jennings, S, Kaiser, MJ, Queirós, AM, Duplisea, DE and Piet, GJ (2006) Cumulative impacts on seabed trawl disturbance on benthic biomass, production, and species richness in different habitats. Canadian Journal of Fisheries and Aquatic Sciences 63, 721–736.CrossRefGoogle Scholar
Hiemstra, PH, Pebesma, EJ, Twenhofel, CJW and Heuvelink, GBM (2009) Real-time automatic interpolation of ambient gamma dose rates from the Dutch radioactivity monitoring network. Computers and Geosciences 35, 1711–1721.CrossRefGoogle Scholar
Hijmans, RJ and van Etten, J (2012) Raster: Geographic analysis and modelling with raster data. R package version 2.0-12.Google Scholar
ICES (2008) Report of the Working Group on the Assessment of Demersal Stocks in the North Sea and Skagerrak – Spring and Autumn (WGNSSK). ICES CM 2008/ACOM:09. Copenhagen: ICES.Google Scholar
ICES (2019) Working Group on the Assessment of Demersal Stocks in the North Sea and Skagerrak (WGNSSK). ICES Scientific Reports 1, 7. doi: doi.org/10.17895/ices.pub.5402.Google Scholar
IJsseldijk, LL, Camphuysen, CJ, Nauw, JJ and Aarts, G (2015) Going with the flow: tidal influence on the occurrence of the harbour porpoise (Phocoena phocoena) in the Marsdiep area, the Netherlands. Journal of Sea Research 103, 129–137.CrossRefGoogle Scholar
IJsseldijk, LL, ten Doeschate, MTI, Davison, NJ, Gröne, A and Brownlow, AC (2018) Crossing boundaries for cetacean conservation: setting research priorities to guide management of harbour porpoises. Marine Policy 95, 77–84.CrossRefGoogle Scholar
Jauniaux, T, Berguerie, H, Camphuysen, CJ, Daoust, P-Y, Drouguet, O, Ghisbain, T, Garcia- Hartmann, M, Grondin, A, Haelters, J, Jacques, T, Kiszka, J, Leopold, M, Pezeril, S, Schnitzler, J and Coignoul, F (2008) Causes of Death of Harbour Porpoises (Phocoena phocoena) Stranded on the Continental Coastline of the Southern North Sea (Belgium, France, and Dutch Coasts) between 1990 and 2007. ICES CM 2008/D:09. Copenhagen: ICES.Google Scholar
Jepson, PD, Deaville, R, Barber, JL, Aguilar, À, Borrell, A, Murphy, S, Barry, J, Brownlow, A, Barnett, J, Berrow, S, Cunningham, AA, Davison, NJ, Ten Doeschate, M, Esteban, R, Ferreira, M, Foote, AD, Genov, T, Giménez, J, Loveridge, J, Llavona, Á, Martin, V, Maxwell, DL, Papachlimitzou, A, Penrose, R, Perkins, MW, Smith, B, de Stephanis, R, Tregenza, N, Verborgh, P, Fernandez, A and Law, RJ (2016) PCB pollution continues to impact populations of orcas and other dolphins in European waters. Scientific Reports 6, 18573, 1–17.CrossRefGoogle ScholarPubMed
Johnston, DW, Westgate, AJ and Read, AJ (2005) Effects of fine-scale oceanographic features on the distribution and movements of harbour porpoises Phocoena phocoena in the Bay of Fundy. Marine Ecology Progress Series 295, 279–293.CrossRefGoogle Scholar
Kanstinger, P and Peck, MA (2009) Co-occurrence of European sardine (Sardina pilchardus), anchovy (Engraulis encrasicolus) and sprat (Sprattus sprattus) larvae in southern North Sea habitats: abundance, distribution and biochemical-based condition. Scientia Marina 73S1, 141–152.CrossRefGoogle Scholar
Kastelein, RA and van Battum, R (1990) The relationship between body weight and morphological measurements in harbour porpoises (Phocoena phocoena) from the North Sea. Aquatic Mammals 16, 48–52.Google Scholar
Kastelein, RA, Helder-Hoek, L, Jennings, N, van Kester, R and Hulsman, R (2019) Reduction in body mass and blubber thickness of harbour porpoises (Phocoena phocoena) due to near-fasting for 24 hours in four seasons. Aquatic Mammals 45, 37–47.CrossRefGoogle Scholar
Kiszka, J, Haelters, J and Jauniaux, T (2004) Distribution and status of small cetaceans along the French Channel coasts: using opportunistic records for a preliminary assessment. Lutra 47, 33–46.Google Scholar
Kiszka, J, Macleod, K, Van Canneyt, O, Walker, D and Ridoux, V (2007) Distribution, encounter rates, and habitat characteristics of toothed cetaceans in the Bay of Biscay and adjacent waters from platform-of-opportunity data. ICES Journal of Marine Science 64, 1033–1043.CrossRefGoogle Scholar
Koopman, HN, Iverson, SJ and Gaskin, DE (1996) Stratification and age-related differences in blubber fatty acids of the male harbour porpoise (Phocoena phocoena). Journal of Comparative Physiology B 165, 628–639.CrossRefGoogle Scholar
Koopman, HN, Pabst, DA, McLellan, WA, Dillaman, RM and Read, AJ (2002) Changes in blubber distribution and morphology associated with starvation in harbour porpoise (Phocoena phocoena): evidence for regional variation in blubber structure and function. Physiological and Biochemical Zoology 75, 498–512.CrossRefGoogle Scholar
Lambert, C, Pettex, E, Dorémus, G, Laran, S, Stéphan, E and Van Canneyt, O (2017) How does ocean seasonality drive habitat preferences of highly mobile top predators? Part II: The eastern North-Atlantic. Deep-Sea Research II 141, 115–132.CrossRefGoogle Scholar
Laran, S, Authier, M, Blanck, A, Dorémus, G, Falchetto, H, Monestiez, P, Pettex, E, Stephan, E, Van Canneyt, O and Ridoux, V (2017) Seasonal distribution and abundance of cetaceans within French Waters. Part II: The Bay of Biscay and the English Channel. Deep Sea Research II 141, 31–40.CrossRefGoogle Scholar
Leeney, RH, Amies, R, Broderick, AC, Witt, MJ, Loveridge, J, Doyle, J and Godley, BJ (2008) Spatio-temporal analysis of cetacean strandings and bycatch in a UK fisheries hotspot. Biodiversity and Conservation 17, 2323–2338.CrossRefGoogle Scholar
Leeney, RH, Witt, MJ, Broderick, AC, Buchanan, J, Jarvis, DS, Richardson, PB and Godley, BJ (2012) Marine megavertebrates of Cornwall and the Isles of Scilly: relative abundance and distribution. Journal of the Marine Biological Association of the United Kingdom 92, 1823–1833.CrossRefGoogle Scholar
Leopold, MF and Meesters, EHWG (2015) Not all harbour porpoises are equal: which factors determine what individual animals should, and can eat? In Leopold, MF (ed.), Eat or be Eaten: Porpoise Diet Studies. Dissertation. Wageningen University, Wageningen, the Netherlands.Google Scholar
Lockyer, C (2007) All creatures great and smaller: a study in cetacean life history energetics. Journal of the Marine Biological Association of the United Kingdom 87, 1035–1045.CrossRefGoogle Scholar
MacLeod, CD, Begona Santos, M, Reid, RJ, Scott, BE and Pierce, GJ (2007) Linking sandeel consumption and the likelihood of starvation in harbour porpoises in the Scottish North Sea: could climate change mean more starving porpoises? Biology Letters 3, 185–188.CrossRefGoogle ScholarPubMed
Mahfouz, C, Henry, F, Courcot, L, Pezeril, S, Bouveroux, T, Dabin, W, Jauniaux, T, Khalaf, G and Amara, R (2014 a) Could chemical contamination be the cause of the increase in the number of stranded harbour porpoises (Phocoena phocoena) along the southern North Sea? Environmental Research 133, 266–273.CrossRefGoogle ScholarPubMed
Mahfouz, C, Henry, F, Jauniaux, T, Khalaf, G and Amara, R (2014 b) Organochlorines in harbour porpoises (Phocoena phocoena) stranded along the southern North Sea. Environmental Science Processes and Impacts 16, 2774–2781.CrossRefGoogle ScholarPubMed
Mahfouz, C, Meziane, T, Henry, F, Abi-Ghanem, C, Spitz, J, Jauniaux, J, Bouveroux, T, Khalaf, G and Amara, R (2017) Multi-approach analysis to assess diet of harbour porpoises Phocoena phocoena in the southern North Sea Marine Ecology Progress Series 563, 249–259.CrossRefGoogle Scholar
Marques, FFC (2001) Estimating Wildlife Distribution and Abundance from Line Transect Surveys Conducted from Platforms of Opportunity. PhD thesis. University of St Andrews, St Andrews, UK.Google Scholar
Murphy, S, Barber, JL, Learmonth, JA, Read, FL, Deaville, R, Brownlow, A, Davidson, N, Penrose, R, Pierce, GJ, Law, RJ and Jepson, PD (2015) Reproduction failure in UK harbour porpoises Phocoena phocoena: legacy of pollutant exposure? PLoS ONE 10, e0131085.CrossRefGoogle ScholarPubMed
OSPAR (2009) Background document for harbour porpoise Phocoena phocoena. OSPAR Publication 420/2009.Google Scholar
Peschko, V, Ronnenberg, K, Siebert, U and Gilles, A (2016) Trends of harbour porpoise (Phocoena phocoena) density in the southern North Sea. Ecological Indicators 60, 174–183.CrossRefGoogle Scholar
Pierpoint, C (2008) Harbour porpoise (Phocoena phocoena) foraging strategy at a high energy, near-shore site in south-west Wales, UK. Journal of the Marine Biological Association of the United Kingdom 88, 1167–1173.CrossRefGoogle Scholar
Reid, JB, Evans, PGH and Northridge, SP (2003) Atlas of Cetacean Distribution in North-West European Waters. Peterborough: Joint Nature Conservation Committee.Google Scholar
Reijnders, PJH (1992) Harbour porpoises Phocoena phocoena in the North Sea: numerical responses to changes in environmental conditions. Netherlands Journal of Aquatic Ecology 26, 75–85.CrossRefGoogle Scholar
SCANS II (2006) Small Cetaceans in the European Atlantic and North Sea (SCANS-II). Final Report submitted to the European Commission under project LIFE04NATNAGBNA000245.Google Scholar
Scheidat, M, Tougaard, J, Brasseur, S, Cartensen, J, van Polanen Petel, T, Teilmann, J and Reijnders, P (2011) Harbour porpoises (Phocoena phocoena) and wind farms: a case study in the Dutch North Sea. Environmental Research Letters 6, 025102.CrossRefGoogle Scholar
Scheidat, M, Verdaat, H and Aarts, G (2012) Using aerial surveys to estimate density and distribution of harbour porpoises in Dutch waters. Journal of Sea Research 69, 1–7.CrossRefGoogle Scholar
Scheidat, M, Couperus, B and Siemensma, M (2018) Electronic monitoring of incidental bycatch of harbour porpoise (Phocoena phocoena) in the Dutch bottom set gillnet fishery (September 2013 to March 2017). Wageningen Marine Research Report C102/18.CrossRefGoogle Scholar
Siebert, S, Gilles, A, Lucke, K, Ludwig, M, Benke, H, Kock, K-H and Scheidat, M (2006) A decade of harbour porpoise occurrence in German waters – analyses of aerial surveys, incidental sightings and strandings. Journal of Sea Research 56, 65–80.CrossRefGoogle Scholar
Sveegaard, S, Andreasen, H, Mouritsen, KN, Jeppesen, JP, Teilmann, J and Kinze, CC (2012) Correlation between the seasonal distribution of harbour porpoises and their prey in the Sound, Baltic Sea. Marine Biology 159, 1029–1037.CrossRefGoogle Scholar
Vaz, S, Carpentier, A, Loots, C and Koubbi, P (2004) Modelling fish habitat suitability in the eastern English Channel. Application to Community Habitat Level ICES CM.Google Scholar
Vinther, M and Larsen, F (2004) Updated estimates of harbour porpoise (Phoceona phocoena) bycatch in the Danish North Sea bottom-set gillnet fishery. Journal of Cetacean Research and Management 6, 19–24.Google Scholar
Virgili, A, Authier, M, Dars, C, Dorémus, G, Laran, S, Van Canneyt, O and Spitz, J (2018) Levée des risques pour l'appel d'offres éoliens au large de Dunkerque par observation aérienne. Programme DUNKRISK – Campagne LEDKOA. Rapport d'analyses. Observatoire Pelagis/Agence Française pour la Biodiversité.Google Scholar
Von Benda-Beckmann, AM, Aarts, G, Sertlek, Ö, Lucke, K, Verboom, WC, Kastelein, RA, Ketten, DR, van Bemmelen, R, Lam, FPA, Kirkwood, RJ and Ainslie, MA (2015) Assessing the impact of underwater clearance of unexploded ordnance on harbour porpoises (Phocoena phocoena) in the Southern North Sea. Aquatic Mammals 41, 503–523.CrossRefGoogle Scholar
Williams, R (2003) Cetacean Studies Using Platforms of Opportunity. PhD thesis. University of St. Andrews, St Andrews, UK.Google Scholar
Wisniewska, DM, Johnson, M, Teilmann, J, Rojano-Donate, L, Shearer, J, Sveegaard, S, Miller, LA, Siebert, U and Teglberg Madsen, P (2016) Ultra-high foraging rates of harbour porpoises make them vulnerable to anthropogenic disturbance. Current Biology 26, 1441–1446.CrossRefGoogle ScholarPubMed
Wood, SN (2017) Generalized Additive Models: An Introduction with R, 2nd edn.Boca Raton, FL: CRC Press.CrossRefGoogle Scholar
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