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Article Dans Une Revue Ecology Letters Année : 2018

A general method for estimating seed dormancy and colonisation in annual plants from the observation of existing flora

Résumé

In plant ecology, characterising colonisation and extinction in plant metapopulations is challeng- ing due to the non-detectable seed bank that allows plants to emerge after several years of absence. In this study, we used a Hidden Markov Model to characterise seed dormancy, colonisa- tion and germination solely from the presence – absence of standing flora. Applying the model to data from a long-term survey of 38 annual weeds across France, we identified three homogeneous functional groups: (1) species persisting preferentially through spatial colonisation, (2) species per- sisting preferentially through seed dormancy and (3) a mix of both strategies. These groups are consistent with existing ecological knowledge, demonstrating that ecologically meaningful parame- ters can be estimated from simple presence – absence observations. These results indicate that such studies could contribute to the design of weed management strategies. They also open the possibil- ity of testing life-history theories such as the dormancy/colonisation trade-off in natura .
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Dates et versions

hal-01911555 , version 1 (02-11-2018)

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Matthieu Pluntz, Sebastian Le Coz, Nathalie Peyrard, Roger Pradel, Rémi Choquet, et al.. A general method for estimating seed dormancy and colonisation in annual plants from the observation of existing flora. Ecology Letters, 2018, 21 (9), pp.1311-1318. ⟨10.1111/ele.13097⟩. ⟨hal-01911555⟩
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