Artículos de revistas
The Role Of Predator Overlap In The Robustness And Extinction Of A Four Species Predatorprey Network
Registro en:
Physica A: Statistical Mechanics And Its Applications. , v. 389, n. 21, p. 4725 - 4733, 2010.
3784371
10.1016/j.physa.2010.06.022
2-s2.0-77956176974
Autor
Hisi A.N.S.
Guimaraes Jr. P.R.
De Aguiar M.A.M.
Institución
Resumen
Predators and preys often form species networks with asymmetric patterns of interaction. We study the dynamics of a four species network consisting of two weakly connected predatorprey pairs. We focus our analysis on the effects of the cross interaction between the predator of the first pair and the prey of the second pair. This is an example where the predator overlap, which is the proportion of predators that a given prey shares with other preys, is not uniform across the network due to asymmetries in patterns of interaction. We explore the behavior of the system under different interaction strengths and study the dynamics of survival and extinction. In particular, we consider situations in which the four species have initial populations lower than their long-term equilibrium, simulating catastrophic situations in which their abundances are reduced due to human action or environmental change. We show that, under these reduced initial conditions, and depending on the strength of the cross interaction, the populations tend to oscillate before re-equilibrating, disturbing the community equilibrium and sometimes reaching values that are only a small fraction of the equilibrium population, potentially leading to their extinction. We predict that, contrary to one's intuition, the most likely scenario is the extinction of the less predated preys. © 2010 Elsevier B.V. All rights reserved. 389 21 4725 4733 (1975) Ecology and Evolution of Communities, , M. Cody, J. Diamond, Belknap Press New York Pimm, S.L., (2002) Food Webs, , 2nd ed. Chicago University Press New York Sol, R.V., Montoya, J.M., Complexity and fagility in ecological networks (2001) Proceedings of the Royal Society of London, 268, pp. 2039-2045 Wilburn, H.M., Fauth, J.E., Experimental aquatic food webs: Interactions between two predators and two prey (1990) The American Naturalist, 135 (2), p. 176 Vazquez, D.P., Aizen, M.A., Asymmetric specialization: A pervasive feature of plant-pollinator interactions (2004) Ecology, 85, pp. 1251-1257 Bascompte, J., Jordano, P., Melian, C.J., Olesen, J.M., The nested assembly of plant animal mutualistic networks (2003) Proceedings of the National Academy of Sciences USA, 100, pp. 9383-9387 Guimaraes, P.R., Rico-Gray, V., Dos Reis, S.F., Thompson, J.N., Asymmetries in specialization in ant-plant mutualistic networks (2006) Proceedings of the Royal Society B-Biological Sciences, 273, pp. 2041-2047. , 101098/rspb20063548 Guimaraes, P.R., Sazima, C., Dos Reis, S.F., Sazima, I., The nested structure of marine cleaning symbiosis: Is it like flowers and bees? (2007) Biology Letters, 3, pp. 51-54 Guimaraes, P.R., MacHado, G., De Aguiar, M.A.M., Jordano, P., Bascompte, J., Pinheiro, A., Dos Reis, S.F., Build-up mechanisms determining the topology of mutualistic networks (2007) Journal of Theoretical Biology, 249, pp. 181-189 Thebault, E., Fontaine, C., Does asymmetric specialization differ between mutualistic and trophic networks? (2008) Oikos, 117, pp. 555-563 Vazquez, D.P., Poulin, R., Krasnov, B.R., Shenbrot, G.I., Species abundance and the distribution of specialization in host-parasite interaction networks (2005) Journal of Animal Ecology, 74, pp. 946-955 Sinclair, A.R.E., Mduma, S., Brashares, J.S., Patterns of predation in a diverse predatorprey system (2003) Nature, 425, pp. 288-290 Sinha, S., Complexity vs. stability in small-world networks (2005) Physica A, 346, pp. 147-153 (2004) Evolutionary Conservation Biology, , R. Ferrire, U. Dieckmann, D. Couvet, Cambrige Press New York Montoya, J.M., Pim, S.L., Sol, R.V., Ecological networks and their fragility (2006) Nature, 442, pp. 259-264 Perna, A., Valverde, S., Gautrais, J., Jost, C., Sol, R., Kuntz, P., Theraulaz, G., Topological efficiency in three-dimensional gallery networks of termite nests (2008) Physica A, 387, pp. 6235-6244 Alroy, J., A multispecies overkill simulation of the end-pleistocene megafaunal mass extinction (2001) Science, 292, pp. 1893-1896 Owen-Smith, N., Pleistocene extinctions: The pivotal role of megaherbivores (1987) Paleobiology, 13, pp. 331-362 Van Kooten, T., De Roos, A.M., Persson, L., Bistability and an Allee effect as emergent consequences of stage-specific predation (2005) Journal of Theoretical Biology, 203, pp. 67-74 Murray, J.D., (2002) Mathematical Biology I: An Introduction, , Springer New York Milo, R., Shen-Orr, S., Itzkovitz, S., Kashtan, N., Chklovskii, D., Alon, U., Network motifs: Simple building blocks of complex networks (2002) Science, 298, pp. 824-827 Sih, A., Englund, G., Wooster, D., Emergent impacts of multiple predator on prey (1998) Trends in Ecology & Evolution, 13, pp. 350-355 Huang, C.-Y., Sun, C.-T., Cheng, C.-Y., Hsieh, J.-L., Bridge and brick motifs in complex networks (2007) Physica A, 377, pp. 340-350 McCann, K.S., The diversitystability debate (2000) Nature, 405, pp. 228-233 Drossel, B., Higgs, P.G., McKane, A.J., The influence of predatorprey population dynamics on the long-term evolution of food web structure (2001) Journal of Theoretical Biology, 208, pp. 91-107 May, R., (2001) Stability and Complexity in Model Ecosystems, , Princeton University Press New Jersey Bonsall, M.B., Hassell, M.P., Apparent competition structures ecological assemblages (1997) Nature, 338, pp. 371-373