New paper in PNAS

We have just published our paper “Olesen, J.M., Bascompte, J., Dupont, Y., and Jordano, P. 2007. The modularity of pollination networks. Proceedings of the National Academy of Sciences USA, 104: 19891-19896”. These are great news since it represents a very nice work lead by Jens. Here we relate the concept of moodularity to our previous work on nestedness in mutualistic plant-animal assemblages.

New paper on coextinction cascades in plant-animal mutualistic networks

New paper in Nature

Three days ago we had the good news of our manuscript on coextinction cascades in plant-animal mutualistic networks being finally accepted in Nature. These are very good news for the group, especially for our efforts in the last 4 years working on complex webs of interactions. Enrico did a superb job leading this ms. Here is the abstract:

Rezende, E., Lavabre, J., Guimarães Jr., P.R., Jordano, P. and Bascompte, J. 2007. Non-random coextinctions in phylogenetically structured mutualistic networks. Nature 00: 000-000.

The interactions between plants and their animal pollinators and seed dispersers have molded much of Earth’s biodiversity. Recently, it has been shown that these mutually beneficial interactions form complex networks with a well-defined architecture that may contribute to biodiversity persistence. Little is known, however, about which ecological, evolutionary, and coevolutionary mechanisms contribute to generate these network patterns. Employing phylogenetic comparative statistical tools, here we show that the evolutionary history of plants and animals significantly predicts the number of interactions per species, and the identity of the species with whom they interact. As a consequence of phylogenetic resemblance on interaction patterns, simulated extinction events tend to trigger coextinction cascades across related species. This results on a non-random pruning of the evolutionary tree and a more pronounced loss of taxonomic diversity than expected in the absence of phylogenetic signal. Our results emphasize how the simultaneous consideration of phylogenetic information and network architecture can contribute to the conservation of species rich communities.

New paper on seed dispersal by animal frugivores in PNAS

New paper in PNAS just published

We have just published our paper “Jordano, P., C. García, J.A. Godoy, and J.L. García-Castaño. 2007. Differential contribution of frugivores to complex seed dispersal patterns. Proceedings National Academy of Sciences USA, 104: 3278-3282”. These are great news since it represents a great advance in the analysis of frugivore-created seed shadows. We document the differential contribution of different frugivore groups to seeds dispersed a given distance, using direct assignement procedires based on DNA genotyping methods. At the moment it’s the first approximation we have available to the total dispersal kernel of a plant species.
The paper has been extensively commented in the ‘Perspectives in Science’ section of Science journal. Please see the publications list for details.

Phylogeography of Frangula alnus

Phylogeography of Frangula alnus

Our manuscript “Hampe, A., J. Arroyo, P. Jordano, and R.J. Petit. 2003. Rangewide phylogeography of a bird-dispersed Eurasian shrub: contrasting Mediterranean and temperate glacial refugia” is now tentatively accepted for Molecular Ecology vol. 12, pending minor changes.