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Seagrass beds and intertidal invertebrates: an experimental test of the role of habitat structure

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Abstract

The majority of field experiments have been carried out on relatively small spatial and short temporal scales, but some of the most interesting ecological processes operate at much larger scales. However, large-scale experiments appropriate to the landscape, often have to be carried out with minimal plot replication and hence reduced statistical power. Here, we report the results of such a large scale, un-replicated field experiment on the Mondego estuary, Portugal, which nevertheless provides compelling evidence of the importance of habitat structure for invertebrate community composition and dynamics. In this estuary, seagrass beds have suffered a dramatic decline over the last 20 years, associated with changes in invertebrate assemblages. In addition, the most abundant species in the system, Hydrobia ulvae, displays distinctly different population structures in those sites. The aim of the field experiment was to test the hypothesis that these differences are related to enhanced survival of snails due to protection from avian or fish predators so that they can grow to larger body sizes in the more complex habitat provided by seagrass. We tested this hypothesis through a large-scale experiment using artificial seagrass beds over a 12-month period. Adult snail densities were higher in the artificial bed plots compared to controls. However, these differences emerged only slowly, related to snail growth rate. This suggests that protection from epibenthic predators can have a significant effect on population structure and hence biomass and productivity of key species in this system. However, the invertebrate assemblage in artificial seagrass plots and the natural seagrass bed, remained statistically separate by the end of the experiment.

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References

  • Anderson, A., 1971. Intertidal activity, breeding and the floating habitat of Hydrobia ulvae in the Ythan estuary. Journal Marine Biological Association UK 51: 423–437.

    Article  Google Scholar 

  • Cardoso, P. G., A. I. Lillebø, M. A. Pardal, S. M. Ferreira & J. C. Marques, 2002. The effect of different primary producers on Hydrobia ulvae population dynamics: a case study in a temperate intertidal estuary. Journal of Experimental Marine Biology and Ecology 277(2): 173–195.

    Article  Google Scholar 

  • Cardoso, P. G., M. A. Pardal, A. I. Lillebø, S. M. Ferreira, D. Raffaelli & J. C. Marques, 2004. Dynamic changes in seagrass assemblages under eutrophication and implications for recovery. Journal of Experimental Marine Biology and Ecology 302: 233–248.

    Article  Google Scholar 

  • Cardoso, P. G., A. Brandão, M. A. Pardal, D. Raffaelli & J. C. Marques, 2005. Resilience of Hydrobia ulvae populations to anthropogenic and natural disturbances. Marine Ecology Progress Series 289: 191–199.

    Google Scholar 

  • Clarke, K. R. & R. M. Warwick, 2001. Change in Marine Communities. An Approach to Statistical Analysis and Interpretation, 2nd edn. Primer-E Ltd, Plymouth.

    Google Scholar 

  • Clarke, K. R. & R. N. Gorley, 2001. Primer v5: User Manual/Tutorial. Primer-E Ltd, Plymouth.

    Google Scholar 

  • Commito, J. A. & E. M. Boncavage, 1989. Suspension-feeders and coexisting infauna: an enhancement counterexample. Journal of Experimental Marine Biology and Ecology 125: 33–42.

    Article  Google Scholar 

  • Commito, J. A. & N. M. J. A. Dankers, 2001. Dynamics of temporal and spatial complexity in European and North American soft-bottom mussel beds. In Reise, K. (ed.) Ecological Comparisons of Sediment Shores. Springer, Berlin, 39–60.

    Google Scholar 

  • Dittmann, S., 1990. Musselbeds—amensalism or amelioration for intertidal fauna? Helgoländer Meeresuntersuchungen. 44: 335–352.

    Article  Google Scholar 

  • Dolbeth, M., M. A. Pardal, A. I. Lillebø, U. M. Azeiteiro & J. C. Marques, 2003. Short- and long-term effects of eutrophication on the secondary production of an intertidal macrobenthic community. Marine Biology 143: 1229–1238.

    Article  Google Scholar 

  • Duarte, C. M., 2000. Marine biodiversity and ecosystem services. Journal of Experimental Marine Biology and Ecology 250: 117–132.

    Article  PubMed  Google Scholar 

  • Flach, E. C., 1992. Disturbance of benthic infauna by sediment-reworking activities of the lugworm Arenicola marina. Journal of Sea Research 30: 81–89.

    Google Scholar 

  • Flach, E. C. & A. Tamaki, 2001. Competitive bioturbators on intertidal sandflats in the European Wadden Sea and Ariake Sound, Japan. In Reise, K. (ed.) Ecological Comparisons of Sediment Shores. Springer, Berlin, 149–172.

  • Huxham, M., D. Raffaelli & A. W. Pike, 1995. The effect of larval trematodes on the growth and burrowing behaviour of Hydrobia ulvae (Gastropoda: Prosobranchiata) in the Ythan Estuary, north–east Scotland. Journal of Experimental Marine Biology and Ecology 185: 1–17.

    Article  Google Scholar 

  • Lee, S. Y., C. W. Fong & R. S. S. Wu, 2001. The effects of seagrass (Zostera japonica) canopy structure on associated fauna: a study using artificial seagrass units and sampling of natural beds. Journal of Experimental Marine Biology and Ecology 259(1): 23–50.

    Article  PubMed  Google Scholar 

  • Lillebø, A. I., M. A. Pardal & J. C. Marques, 1999. Population structure, dynamics and production of Hydrobia ulvae (Pennant) (Mollusca: Prosobranchia) along an eutrophication gradient in the Mondego estuary (Portugal). Acta Oecologica 20(4): 289–304.

    Article  Google Scholar 

  • Marques, J. C., M. A. Pardal, S. N. Nielsen & S. E. Jørgensen, 1997. Analysis of the properties of exergy and biodiversity along an estuarine gradient of eutrophication. Ecological Modelling 102: 155–167.

    Article  Google Scholar 

  • Marques, J. C., S. N. Nielsen, M. A. Pardal & S. E. Jørgensen, 2003. Impact of eutrophication and river management within a framework of ecosystem theories. Ecological Modelling 166: 147–168.

    Article  Google Scholar 

  • Martins, I., M. A. Pardal, A. I. Lillebø, M. R. Flindt & J. C. Marques, 2001. Hydrodynamics as a major factor controlling the occurrence of green macroalgal blooms in a eutrophic estuary: a case study on the influence of precipitation and river management. Estuarine Coastal and Shelf Science 52: 165–177.

    Article  CAS  Google Scholar 

  • Orth, R. J., K. L. Heck & R. J. Diaz Jr, 1991. Littoral and intertidal systems in the mid-Atlantic coast of the United States. In Mathieson, A. C. & P. H. Nienhuis (eds) Intertidal and Littoral Ecosystems. Elsevier, Amsterdam, 193–214.

  • Pardal, M. A., J. C. Marques, I. Metelo, A. I. Lillebø & M. R. Flindt, 2000. Impact of eutrophication on the life cycle, population dynamics and production of Ampithoe valida (Amphipoda) along an estuarine spatial gradient (Mondego estuary, Portugal). Marine Ecology Progress Series 196: 207–219.

    Google Scholar 

  • Pardal, M. A., P. G. Cardoso, J. P. Sousa, J. C. Marques & D. Raffaelli, 2004. Assessing environmental quality: a novel approach. Marine Ecology Progress Series 267: 1–8.

    Google Scholar 

  • Pinckney, J. L. & F. Micheli, 1998. Microalgae on seagrass mimics: does epiphyte community structure differ from live seagrasses? Journal of Experimental Marine Biology and Ecology 221: 59–70.

    Article  Google Scholar 

  • Planas, M. & J. Mora, 1987. Dinámica poblacional de Hydrobia ulvae (Pennant) en la ria de Pontevedra (NO España). Cahiers de Biologie Marine 28: 447–464.

    Google Scholar 

  • Raffaelli, D., J. A. Raven & L. J. Poole, 1998. Ecological impacts of green macroalgal blooms. Oceanography and Marine Biology: an Annual Review 36: 97–126.

    Google Scholar 

  • Raffaelli, D. & H. Moller, 2000. Manipulative field experiments in animal ecology: do they promise more than they can deliver? Advanced Ecological Research 30: 299–330.

    Article  CAS  Google Scholar 

  • Ragnarsson, S. A. & D. Raffaelli, 1999. Effects of the mussel Mytilus edulis L. on the invertebrate fauna of sediments. Journal of Experimental Marine Biology and Ecology 241: 31–43.

    Article  Google Scholar 

  • Ragnarsson, S. A. & D. Raffaelli, 2001. The effects of community dominants in the organisation of intertidal mudflats of the Ythan estuary. In Raffaelli, D., M. Solan, D. Paterson, A. L. Buck & J. R. Pomfret (eds) Coastal Zone Topics: Process, Ecology and Management. ECSA, UK, 47–54.

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Acknowledgements

This paper was supported by the FCT (Portuguese Foundation for Science and Technology) through a grant attributed to P. G. Cardoso (SFRH/BD/5350/2001). The authors are indebted to all colleagues from IMAR-Coimbra who assisted in the field and laboratory work and to family and friends that helped in the construction of the artificial seagrass shoots.

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Authors and Affiliations

  1. Department of Zoology, IMAR—Institute of Marine Research, University of Coimbra, 3004-517, Coimbra, Portugal

    P. G. Cardoso & M. A. Pardal

  2. Environment Department, University of York, Heslington, York, YO10 5DD, UK

    D. Raffaelli

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  1. P. G. Cardoso
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  2. D. Raffaelli
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  3. M. A. Pardal
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Correspondence to P. G. Cardoso.

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Handling editor: K. Martens

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Cardoso, P.G., Raffaelli, D. & Pardal, M.A. Seagrass beds and intertidal invertebrates: an experimental test of the role of habitat structure. Hydrobiologia 575, 221–230 (2007). https://doi.org/10.1007/s10750-006-0375-x

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  • DOI: https://doi.org/10.1007/s10750-006-0375-x

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