Dinámica de población en redes heterogéneas

Trejo Soto, Claudia A. (2009) Dinámica de población en redes heterogéneas. Maestría en Ciencias Físicas, Universidad Nacional de Cuyo, Instituto Balseiro.

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Los sistemas mutualistas de planta-polinizador están en peligro. La intervención indiscriminada del hombre en el medio ambiente, es una de las causas fundamentales de la destrucción y fragmentación del hábitat en el que estos sistemas se desenvuelven. Los sistemas de planta-polinizador han coevolucionado desde fines del cretácico y algunos nuevos estudios muestran que pueden haber surgido mucho antes, lo que los convierte en pieza clave en la proliferación de la biodiversidad. La polinización por parte de animales es el sistema más efectivo para la reproducción sexual de las plantas y no es comparable con ningún tipo de tecnología empleada por la agricultura. Es por esto que el estudio del impacto de la destrucción del hábitat en dichos sistemas es fundamental. Sobre la respuesta de estos sistemas a la fragmentación del hábitat se han puesto muchas hipótesis sobre la mesa, las que mediante estudios de campo han sido corroboradas o sorpresivamente desmentidas. Nuestro objetivo en este trabajo es intentar confirmar y entender cuales son las características fundamentales de los sistemas que los hacen responder de una manera particular a cierto disturbio. Mediante modelos de dinámica poblacional y metapoblacional, y la teoría de las redes complejas, ponemos a disposición del estudio herramientas computacionales que nos permiten simular los efectos de la destrucción sobre el sistema. Y así observar su comportamiento y responder alguna de las preguntas que tienen a la ecología de los sistemas planta-polinizador en jaque: ¿Es la topología de la red un parámetro determinante en la respuesta del sistema a la destrucción del hábitat? o ¿Porqué se observa que la susceptibilidad de las especies a la extinción, no parece depender de su grado de especialización? Si bien estas preguntas no han podido ser completamente respondidas, nuestro estudio plantea algunos acercamientos a sus posibles respuestas que dan un nuevo punto de vista a la investigación de estos sistemas.

Resumen en inglés

Plant-pollinator mutualistic system endangered. The indiscriminated intervention of humans in the enviroment is one of the fundamental causes of habitat destruction and fragmentation. Plant-pollinator systems have coevolved since late cretaceous and some new research has shown that they may have been established long before. Pollination by animals is the most effective system of sexual reproduction in plants and it is not comparable with any technology used in farming. That is the reason why the study of the impact of habitat destruction in such systems is fundamental. About the response of these systems to habitat fragmentation, there have been many hypothesis over the table, some of them confirmed and others surprisingly denied by field studies. We aim in this work to try to confirm and understand which are the fundamental properties of this systems that make them respond in a particular way to disturbance. Through population dynamics models, metapopulation models and complex networks theory, we set some computational tools that allow us to simulate the effects of habitat destruction in the system. In that way we can observe their behavior and answer some of the questions that have plant-pollinator systems ecology in jeopardy: Is the topology of the network a fundamental parameter in the response of the system to habitat destruction? Does susceptibility to species extintion depends on their specialization degree? Even though these questions could not been thoroughly answered, we believe that our study sets a starting point towards their solution, providing a new point of view to the investigation of these systems.

Tipo de objeto:Tesis (Maestría en Ciencias Físicas)
Palabras Clave:Simbiosis; Symbiosis; Asimetría; Asymmetry; Fecundación de las plantas; Fertilization of plants; Dinámica de la población; Population dynamics; Hábitat
Referencias:[1] R. Aguilar, L. Ashworth, L. Galetto & M. Aizen. Plant reproductive suceptibility to hábitat fragmentation: review and synthesis through a metaanalysis.. Ecology Letters 9, pp. 969-980. 2006. [2] M. Aizen & P. Feinsinger. Forest fragmentation, pollination, and plants reproduction in a Chaco dry forest, Argentina. Ecology 75, pp. 330-351. 1994. [3] M. Aizen, C. Morales, J. M. Morales. Invasive Mutualists Erode Native Pollination Webs. PLoS Biology 6, 2, e31. 2008. [4] R. Albert & A. L. Barabási. Statistical mechanics of complex network. Rev. Mod. Phy. 74, pp. 47-97. 2002. [5] R. Albert, H. Jeong and A.L.Barabási. The Diameter of the World-Wide Web. Nature (London) 401, pp. 130-131. 1999. [6] M. Almeida-Neto, P. Guimarães, P. R. Guimarães Jr., R. Loyola & W.Ulrich. A consistent metric for nestedness analysis in ecological systems: reconciling concept and measurement.Oikos 117, pp. 1227-1239. 2008. [7] L. Ashworth, R. Aguilar, L. Galetto & M. Aizen. Why do pollination generalist and specialist plant especies show similar reproductive susceptibility to habitat fragmentation. Journal of Ecology 92, pp. 717-719. 2004. [8] W.Atmar & B. D. Patterson. The measure of order and disorder in the dsitribution of species in fragmented habitat. Oecologia 96, pp. 373-382. 1993. [9] M. Begon, C. R. Townsend & J. L. Harper. Ecology: From indivuduals to ecosystems. Blackwell Publishing. 1986. [10] E. Burgos, H. Ceva, R. Perazzo, M. Devoto, D. Medan, M. Zimmermann, A. M. Delbue. Why nestedness in mutualistic networks. Journal of Theoretical Biology 249, pp. 307-313. 2007. [11] J. Bascompte & P. Jordano. Plant-Animal Mutualistic Networks: The Architecture of Biodiversity. Annual Review of Ecology, Evolution and Systematics 38, pp.567-593. 2007. [12] J. Bascompte, P. Jordano, C. J. Melián & J. M. Olesen. The nested assembly of plant-animal mutualistic networks. PNAS 100, 16. August 2003. [13] J. Bascompte, P. Jordano & J. M. Olesen. Assimetric Coevolutionary Networks Facilitate Biodiversity Maintenance. Science 312, pp. 431-433. 2006. [14] C. Darwin. The origin of species by mean of natural selection, or the preservation of favoured races in the struggle for life. Murray. London. 1859. [15] H. Elberling & J. M. Olesen. Unplublished data. [16] H. Elberling & J. M. Olesen. The structure of a high latitude plantflower visitor system: the dominance of flies. Ecography 22, pp. 314-323. 1999. [17] M. Faloutsos, P. Faloutsos and C. Faloutsos. On power-law relationships of internet topology. Comp. Com. Rev. 29, pp. 251-262. 1999. [18] P. Feinsinger, H. M. Tiebout III, & B. E. Young. Do tropical bird-pollinated plants exhibit density-depen- dent interactions? Field experiments. Ecology 72, pp. 1953-1963. 1991. [19] R. Ferrer i Cancho & R. V. Solé. The small world of human language. Proc. Roy. Soc. London Ser. B 268, pp. 2261-2265. 2001. [20] M. Fortuna & J. Bascompte. Habitat loss and the struture of plant-animal mutualistic networks.Ecology Letters 9, pp. 281-286. 2006. [21] D.M. Gordon. The organization of work in social insects colonies. Nature 380, pp. 121-124. 1996. [22] J. P. Grime. Plant Strategies and Vegetation Proceses. Chichester: John Wiley. 1979. [23] B. Hocking. Insect flower associations in the high Arctic with special reference to nectar. Oikos 19, pp. 359-387. 1968. [24] T. Inoue, M. Kato, T. Kakutani, T. Suka & T. Itino. Insect flower relationship in the temperate deciduous forest of Kibune, Kyoto: An overview of the flowering phenology and the seasonal pattern of insect visits. Contrib. Biol. Lab., Kyoto Univ. 27, pp. 377-463. 1990. [25] D. W. Inouye & G. H. Pyke. Pollination biology in the Snowy Mountains of Australia: comparisons with montane Colorado. Aust. J. Ecol. 13, pp. 191- 210. 1988. [26] H. Jeong, S. Mason, A.-L. Barabási, & Z. N. Oltvai. Lethality and centrality in protein networks. Nature 411, pp. 41-42. 2001. [27] P. Jordano, J. Bascompte & J. M. Olesen. Invariant properties in coevolutionary networks of plant-animal interaction. Ecology Letter 6, pp. 69-81. 2003. [28] D. S. Jones & B. D. Sleeman. Diferencial Equation and Mathematical Biology. Mathematical Biology and Medicine Series. Chapman & Hall/CRC. [29] T. Kakutani, T. Inoue, M. Kato & H. Ichihashi. Insect flower relationship in the campus of Kyoto University, Kyoto: An overview of the flowering phenology and the seasonal pattern of insect visits. Contrib. Biol. Lab., Kyoto Univ. 27, pp. 465-521. 1990. [30] M. Kato, T. Kakutani, T. Inoue & T. Itino. Insect flower relationship in the primary beech forest of Ashu, Kyoto: An overview of the flowering phenology and the seasonal pattern of insect visits. Contrib. Biol. Lab. Kyoto University 27, pp. 309-375. 1990. [31] M. Kato, M. Matsumoto & T. Kato. Flowering phenology and anthophilous insect community in the cool-temperate subalpine forests and meadows at Mt. Kushigata in the Central part of Japan. Contrib. Biol. Lab., Kyoto Univ. 28, pp. 119-172. 1993. [32] M. Kato & R. Miura Flowering phenology and anthophilous insect community at a threatened natural lowland marsh at Nakaikemi in Tsuruga, Japan. Contrib. Biol. Lab., Kyoto Univ. 29, pp. 1-48. 1996. [33] P. A. Keddy. Plants and vegetation, origin, proceses, consequences. Cambridge University Press. 2007. [34] W. E. Kunin. Sex and single mustard: population density and pollination behavior effects on seed set. Ecology 74, pp. 2145-2160. 1993. [35] W. F. Laurance & R. O. Bierregaard. Tropical Forest Remnants: Ecology, Management, and Conservation of Fragmented Communities. University of Chicago Press: Chicago. 1997. [36] R. Levins. Some demographic and genetic consequences of enviromental heterogeneity for biological control. Bull. Entomol. Soc. Am. 15, 237-240. 1969. [37] R. Levins. & D. Cutter. . Proc. Natn. Acad. Sci. U.S.A 68, 1246-1248. 1971. [38] F. Liljeros, C. R. Edling, L. Amaral, H. Stanley & Y. Aberg. The web of human sexual contacts. Nature London 411, pp. 907-908. 2001. [39] J.M. Montoya and R.V. Solé. Small world patterns in food webs. J.Theor. Bio. 214, pp. 405-412. 2002. [40] C. L. Morales & M. Aizen. Invasive mutualism and the structure of plantpolinator interactions in the temperate forests of north-west Patagonia Argentina. Journal of Ecology 94, pp. 171-180. 2006. [41] T. Mosquin & J. E. Martin. Observations on the pollination biology of plants on Melville Island, N.W.T., Canada. FieldNat. 81, pp. 201-205. 1967 [42] C. Murcia. Forest fragmentation and the pollination of neotropical plants. Forest Patches in Tropical Landscapes, pp 19-36. Island Press. Washington. 1993 [43] J. D. Murray. Mathematical Biology. Biomathematics 19. Springer. 1993. [44] S. Nee & R. M. May. Dynamics of metapopulation: habitat destruction and competitive coexistence. Journal of Animal Ecology 61, pp. 37-40. 1992 [45] M. E. J. Newman. Assortative Mixing in Networks. Physical Review Letters 89, 20. 2002. [46] M. E. J. Newman. Mixing Patterns in Networks. Physical Review E 67, 026126. 2003. [47] M. E. J. Newman. The structure and function of complex networks. SIAM Review 45, 2, pp 167-256. 2003. [48] J.M. Olesen, unpublished data. Bog, Hestehaven, Denmark. [49] J.M. Olesen, unpublished data. Forest, Hestehaven, Denmark. [50] J.M. Olesen, unpublished data. Wasteground, Hestehaven, Denmark. [51] J. M. Olesen, L. I. Eskildsen & S. Venkatasami. Invasion of pollination networks on oceanic islnds: importance of invader complexes and endemic super generalists. Diversity and Distributions 8, pp. 181-192. 2002. [52] B. Patterson & W. Atmar. Nested subsets and the structure of insular mammalian faunas and archipelagos. Biological Journal of the Linnean Society 28, pp. 65-82. 1986. [53] R. B. Primack. Insect pollination in the New Zealand mountain flora. New Zealand J. Bot. 21, pp. 317-333. 1983. [54] M. Proctor, P. Yeo & A. Lack. The Natural History of Pollination. Timber Press, Portland, OR. 1996. [55] S. Redner. How popular is your paper? An empirical study of the citation distribution. Eur. Phys. J. B 4, pp. 131-134. 1998. [56] M. A. Rodríguez-Gironés & L. Santamaría. A new algorithm to calculate the nestedness temperature of presence-absence matrices. Journal of Biogeography 33, pp. 924-935. 2006. [57] D. W. Schemske. Limits to specialization and coevolution in plant-animal mutualism. Coevolution. University of Chicago Press. pp. 67-109. 1983. [58] D. W. Schemske, M.F. Willson, M. Melampy, L. Miller, L. Verner, K. Schemske & L. Best. Flowering ecology of some spring woodland herbs. Ecology 59, pp. 351-366. 1978. [59] R. Solé & J. Bascompte. Self-Organization in Complex Ecosystems. Monographs in population biology 42. Princeton University Press. 2006. [60] C. K. Sprengel. Discovery of the secret of nature in the struture and fertilization of flowers. Vieweq, Berlin. 1793. [61] D. Tilman. Competition and biodiversity in spatially structured habitats. Ecology 75, 2-16. 1994. [62] D. Tilman & P. Kareiva. Spacial Ecology: the role of space un population dynamics and interspecific interactions. Monographs in Population Biology. Princeton University Press. 1997. [63] D. Tilman, R. M. May, C. L. Lehman & M. A. Nowak. Habitat destruction and the extinction debt. Nature 371, pp. 65-66. 1994. [64] J. D. Thompson. The coevolutionary process. Chicago University Press. 1994. [65] D. Vásquez & M. Aizen. Asymmetric specialization: a pervasive feature of plant-pollinator interaccións. Ecology 85, 5, pp. 1251-1257. 2004. [66] D. Vásquez & D. Simberloff. Ecological Specialization and Suceptibility to Disturbance: Conjectures and Refutation. The American Naturalits 159, vol 6. 2002. [67] N. Waser & Jeff Ollerton. Plant-Pollinator Interactions. From specialization to generalization. The University of Chicago Press. 2006. [68] J.D. Watts and S.H. Strogatz. Collective dinamics of "small world"networks. Nature (London) 393, pp. 440-442. 1998. [69] J. G. White, E. Southgate, J. N. Thompson, & S. Brenner. The structure of the nervous system of the nematode C. Elegans. Philos. Trans. Roy. Soc. London 314, pp. 1-340. 1986.
Materias:Medio ambiente natural
Ciencias sociales > Demografía
Divisiones:Investigación y aplicaciones no nucleares > Física > Física estadística
Código ID:127
Depositado Por:Samanta Tello
Depositado En:05 Jul 2010 14:10
Última Modificación:05 Jul 2010 14:10

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