Abstract
Biodiversity conservation in economic areas like ports has recently become more important in the European Union due to a stricter interpretation of nature protection laws. In this study we develop a planning and design strategy—the ‘habitat backbone’—with which to support the long-term survival of pioneer species that occur in ports and have low dispersal abilities. For those species, long-term survival in port areas is uncertain because supply of their habitats (on vacant lots) is capricious and depends on land use dynamics. By gaining knowledge about spatial and temporal characteristics of these dynamics we were able to develop a solution to conserve such species. Our solution is based on the creation of permanent habitat—defined as a ‘backbone’—on (semi-) public land with an overall carrying capacity sufficient to support persistent populations. This best ensures long-term survival, and the backbone may also act as refugium. Satellite populations that emerge on adjacent vacant lots will thereby add to the persistence of the overall metapopulation. Management of permanent habitat is focused on retaining early-successional stages of vegetation. Implementing this strategy in the case of the natterjack toad in the Port of Antwerp taught us that realization of a habitat backbone is possible only if landowners, local governments and environmental NGOs cooperate. In the case at hand, such cooperation resulted in a plan that should ensure a coherent and persistent habitat network in which a chorus of some 1,400 natterjack toads could be accommodated—more than the number of toads currently observed.
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References
Bastin L, Thomas CD (1999) The distribution of plant species in urban vegetation fragments. Landsc Ecol 14:493–507. doi:10.1023/A:1008036207944
Bauwens D, Claus K (1996) Distribution of amphibians and reptiles in Flanders, Belgium (in Dutch). De Wielewaal, Turnhout
Bolger DT, Suarez AV, Crooks KR, Morrison SA, Case TJ (2000) Arthropods in urban habitat fragments in southern California. Ecol Appl 10(4):1230–1248. doi:10.1890/1051-0761(2000)010[1230:AIUHFI]2.0.CO;2
Bryant MM (2006) Urban landscape conservation and the role of ecological greenways at local and metropolitan scales. Landsc Urban Plan 76(1–4):23–44. doi:10.1016/j.landurbplan.2004.09.029
Cardskadden H, Lober DJ (1998) Environmental stakeholder management as business strategy: the case of the corporate wildlife habitat enhancement programme. J Environ Manage 52(2):183–202. doi:10.1006/jema.1997.0170
Crooks KR, Suarez AV, Bolger DT (2004) Avian assemblages along a gradient of urbanization in a highly fragmented landscape. Biol Conserv 115:451–462. doi:10.1016/S0006-3207(03)00162-9
de Langen PW (2007) Stakeholders, conflicting interests and governance in port clusters (Chapter 20). Devolution, port governance and port performance. Res in Transp Econ 17:457–477
Denton JS, Beebee TJC (1993) Density-related features of natterjack toad (Bufo calamita) populations in Britain. J Zool (Lond) 229(1):105–119
Ducruet C (2005) Spatial structures and trends in port cities: from the local to the global. Mappemonde 77(1):1–6 (in French)
EU (1992) Council Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of wild fauna and flora (Consolidated version 1.1.2007). European Union, Brussels
European Commission (2007) Guidance document on the strict protection of animal species of Community interest under the Habitats Directive 92/43/EEC. Brussels
Groot Bruinderink G, Van der Sluis T, Lammertsma D, Opdam P, Pouwels R (2003) Designing a coherent ecological network for large mammals in Northwestern Europe. Conserv Biol 17(2):549–557. doi:10.1046/j.1523-1739.2003.01137.x
IBIS (Integraal Bedrijventerreinen Informatie Systeem) (2001) Business sites overview of the Netherlands. Etin consultancy, Tilburg, the Netherlands. Available from www.werklocaties.nl. Accessed July 2007)
Kildaw SD, Irons DB, Nysewander DR, Buck CL (2005) Formation and growth of new seabird colonies: the significance of habitat quality. Mar Ornithol 33:49–58
Kuzmin LS (1995) Amphibians of Russia and neighbouring areas (in German). Die Neue Brehm-Bücherei, Band 627. Westarp-Wissenschaften, Magdeburg
Lancaster J (2000) Geometric scaling of microhabitat patches and their efficacy as refugia during disturbance. J Anim Ecol 69:442–457. doi:10.1046/j.1365-2656.2000.00407.x
Levins R (1970) Extinction. In: Gesternhaber M (ed) Some mathematical problems in biology. American Mathematical Society, Providence, RI, pp 77–107
Luxford D, Chandra S (2005) Harbour-side parcel land-use changes: significance in re-development planning permit appraisal in Melbourne, Australia. Appl GIS 1(1):1–15
MacArthur RH, Wilson EO (1967) The theory of island biogeography. Princeton University Press, Princeton, NJ
Miaud C, Sanuy D, Avrillier J-N (2000) Terrestrial movements of the natterjack toad Bufo calamita in a semi-arid agricultural landscape. Amph Rep 21:357–369. doi:10.1163/156853800507426
Morris RKA, Gibson C (2007) Port development and nature conservation: experiences in England between 1994 and 2005. Ocean Coast Manage 50:443–462. doi:10.1016/j.ocecoaman.2006.08.013
Niemelä J (1999) Is there a need for a theory of urban ecology? Urban Ecosyst 3:57–65. doi:10.1023/A:1009595932440
Opdam P (1991) Metapopulation theory and habitat fragmentation: a review of holarctic breeding bird studies. Landsc Ecol 5(2):93–106. doi:10.1007/BF00124663
Ottburg FGWA, Pouwels R, Slim PA (2007) Making the Port of Antwerp more natural; ecological infrastructure network for the natterjack toad (Bufo calamita) on the left bank of the Scheldt: application of the LARCH model to the natterjack toad in the Port of Antwerp on the left bank of the Scheldt as basis for the sustainable conservation of the species. Alterra Report 1376, Wageningen
Schmidt BR, Pellet J (2005) Relative importance of population processes and habitat characteristics in determining site occupancy of two anurans. J Wildl Manage 69(3):884–893. doi:10.2193/0022-541X(2005)069[0884:RIOPPA]2.0.CO;2
Schadek U (2007) Plants in urban brownfields: modeling the driving factors of site conditions and of plant functional group occurrence in a dynamic environment. PhD Dissertation, Carl von Ossietzky University, Oldenburg
Smit GFJ (2006) Urban development and the natterjack toad (Bufo calamita): implementation of the habitat directive in the Netherlands. In: Vences M, Köhler J, Ziegler T, Böhme W (eds), Herpetologia Bonnensis II. Proceedings of the 13th congress of the societas Europaea herpetologica, pp 167–170
Snep RPH, Van Ierland EC, Opdam P (submitted) Enhancing biodiversity at business sites: what are the options, and which of these do stakeholders prefer? Landsc Urban Plan
Stefan T, Ulbrich K, Grosse WR, Meyer F (2001) Modeling the extinction risk of isolated populations of natterjack toad Bufo calamita. Web Ecology 2:47–56
Stevens VM, Leboulengé E, Wesselingh RA, Baguette M (2006) Quantifying functional connectivity: experimental assessment of boundary permeability for the natterjack toad (Bufo calamita). Oecologia 150(1):161–171. doi:10.1007/s00442-006-0500-6
Stienen EWM, Courtens W, Van de Walle M, Waeyenberge J, Kuijken E (2005) Harbouring nature: port development and dynamic birds provide clues for conservation. In: Herrier JL et al (eds) Proceedings of ‘Dunes and Estuaries 2005’: international conference on nature restoration practices in European coastal habitats. Vliz special publication 19, pp 381–392
Stojanovic TA, Ormerod Smith HD, Wooldridge CF (2006) The impact of the habitats directive on European port operations and management. GeoJournal 65:165–176. doi:10.1007/s10708-006-0004-2
Timmermans W, Snep RPH (2001) Ecological models and urban wildlife. In: Villacampa Y, Brebbia CA, Usó JL (eds) Ecosystems and sustainable development III. Advance ecology science 10. Proceedings ECOsud conference, Southampton, WIT, pp 205–216
Trepl L (1995) Towards a theory of urban biocoenoses. In: Sukopp H, Numata M, Huber A (eds) Urban ecology as the basis for urban planning. SPB Academic Publishing, The Hague, pp 3–21
Verboom J, Pouwels R (2004) Ecological functioning of ecological networks: a species perspective. In: Jongman R, Pungetti G (eds) Ecological networks and greenways: concept, design, implementation. Cambridge University Press, Cambridge
Verboom J, Foppen R, Chardon JP, Opdam P, Luttikhuizen PC (2001) Introducing the key patch approach for habitat networks with persistent populations: an example for marshland birds. Biol Conserv 100(1):89–100. doi:10.1016/S0006-3207(00)00210-X
Vos CC, Verboom J, Opdam P, Ter Braak CJF (2001) Towards ecologically scaled landscape indices. Am Nat 157:24–41. doi:10.1086/317004
Vuilleumier SC, Wilcox BJ, Cairns H, Possingham P (2007) How patch configuration affects the impact of disturbances on metapopulation persistence. Theor Popul Biol 72:77–85. doi:10.1016/j.tpb.2006.11.001
Wahlberg N, Klemetti T, Hanski I (2002) Dynamic populations in a dynamic landscape: the metapopulation structure of the marsh fritillary butterfly. Ecography 25:224–232. doi:10.1034/j.1600-0587.2002.250210.x
Weigend GG, New Brunswick NJ (1973) Stages in the development of the ports of Rotterdam and Antwerp. Geoforum 13:5–15. doi:10.1016/0016-7185(73)90131-0
Wood BC, Pullin AS (2002) Persistence of species in a fragmented urban landscape: the importance of dispersal ability and habitat availability for grassland butterflies. Biodiv Conserv 11:1451–1468. doi:10.1023/A:1016223907962
World Bank (2003) Alternative port structure and ownership model: port reform toolkit. Public Private Infrastructure Advisory Facility
Yang PPJ, Lay OB (2004) Applying ecosystem concepts to the planning of industrial areas: a case study of Singapore’s Jurong Island. J Clean Prod 12:1011–1023. doi:10.1016/j.jclepro.2004.02.028
Acknowledgements
For the pleasant collaboration we thank the Antwerp Port Authority, the Ministry of the Region of Flanders, Natuurpunt, the Association for Land and Industrial Policy for the Left-Bank Area of the Scheldt and the University of Antwerp. We thank Alterra-colleagues Rogier Pouwels (methodology) and Pieter Slim (project management) for their support. We are indebted to Paul Opdam, Ton Stumpel and three anonymous reviewers for their editorial and substantive comments on this manuscript and Michelle Luijber as native speaker for her check on English language. The research project as described in this article was funded by EU Interreg IIIB NEW!Delta, Wageningen UR and the Dutch Ministry of Agriculture, Nature and Food Quality.
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Snep, R.P.H., Ottburg, F.G.W.A. The ‘habitat backbone’ as strategy to conserve pioneer species in dynamic port habitats: lessons from the natterjack toad (Bufo calamita) in the Port of Antwerp (Belgium). Landscape Ecol 23, 1277–1289 (2008). https://doi.org/10.1007/s10980-008-9266-z
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DOI: https://doi.org/10.1007/s10980-008-9266-z