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Increasing spatial dispersion in ecosystem restoration mitigates risk in disturbance‐driven environments
Fivash, G.S.; van Belzen, J.; Temmink, R.J.M.; Didderen, K.; Lengkeek, W.; van der Heide, T.; Bouma, T.J. (2022). Increasing spatial dispersion in ecosystem restoration mitigates risk in disturbance‐driven environments. J. Appl. Ecol. 59(4): 1050-1059.
In: Journal of Applied Ecology. British Ecological Society: Oxford. ISSN 0021-8901; e-ISSN 1365-2664, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Author keywords
    restoration; disturbances; risk-mitigation; spatial dispersion; bet-hedging; biogeomorphology; edge-effects; uncertainty

Auteurs  Top 
  • Fivash, G.S.
  • van Belzen, J., meer
  • Temmink, R.J.M., meer
  • Didderen, K.
  • Lengkeek, W.
  • van der Heide, T., meer
  • Bouma, T.J., meer

    Many vegetated ecosystems, including drylands, coastal dunes, salt marshes and seagrass meadows, inhabit environments frequently disturbed by the erosive forces of wind and water. Once degraded, the restoration of these systems entails a high-risk of failure due to the uncertainty in timing and intensity of future disturbances. Risk-mitigation strategies like bet-hedging (i.e., spreading risk over diverse options) have been proven in cross-disciplinary contexts to optimize yield when uncertainty is high. Yet restoration designs commonly homogenize resources by planting vegetation of similar sizes in grid-like patterns. This decision may unwittingly contribute to the high rate of restoration failure in these environments.Using numerical simulations mimicking vegetation patch dynamics, we demonstrate how avoiding uniform planting designs substantially improves the likelihood of restoration success.These simulations also suggest that the intrinsic risk of failure associated with any planting pattern can be identified a priori by calculating the variance-to-mean ratio of vegetation cover.Synthesis and applications. By introducing a level of spatial overdispersion (variance in vegetation clustering) into restoration planting designs, projects will insure themselves against the uncertainty imposed by disturbances, limited by their willingness to accept a lower rate of recolonization.

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