- Contributed Oral Session 101: Biogeochemistry
Wednesday, August 10, 1:30 PM - 5:00 PM, Meeting Room 520 A, Level 5, Palais des congrès de Montréal
ESA Public Affairs Committee Meeting
Tuesday, August 9, 7:00 AM - 8:30 AM, Meeting Room 512 B, Level 5, Palais des congrès de Montréal
ESA Vegetation Classification Panel Business Meeting
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Ecology / Ecological Monographs Editors Meeting
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ESA Research Committee Meeting
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ESA International Relations Committee Meeting
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ESA Biogeosciences Section Grad Student Breakfast
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Federation of the Americas
Wednesday, August 10, 8:00 AM - 9:00 AM,
VIP awards Recipient / Governing Board Reception (Invitation Only)
Monday, August 8, 5:00 PM - 5:45 PM, Belvedere Patio 715, Level 7, Palais des congrès de Montréal
Contributed Oral Session 87: Rare, Threatened, and Endangered Species: Flora; Habitat
Wednesday, August 10, 8:00 AM - 11:30 AM, Meeting Room 522 A, Level 5, Palais des congrès de Montréal
FT - 13: Charlevoix, an ecotouristic visit (Three nights)
, 8:00 AM - 2:00 PM, Viger Bus Terminal, Palais des congrès de Montréal
Contributed Oral Session 67: Fire Ecology: Restoration and Dynamics
Tuesday, August 9, 1:30 PM - 5:00 PM, Meeting Room 520 C, Level 5, Palais des congrès de Montréal
WK - 11: Tidball: Ecology education: Global cooperation and perspectives
Sunday, August 7, 8:00 AM - 5:00 PM, Meeting Room 511 C, Level 5, Palais des congrès de Montréal
WK - 2: Krasny: Teaching ecology in urban gardens
Saturday, August 6, 9:00 AM - 4:00 PM, Meeting Room 513 C, Level 5, Palais des congrès de Montréal
Parasite invasion dynamics in metapopulation.
Sinha, Somdatta*,1, Singh, Brajendra2, Bagler, Ganesh, 1 Centre for Cellular & Molecular Biology, Hyderabad, AP, INDIA2 School of Environmental Sciences, New Delhi, India
ABSTRACT- Subpopulations of organisms in different habitat patches may differ from each other in biotic (e.g., inherent growth rate and interaction strength) and abiotic (e.g., climatic and landscape pattern) components. Such heterogeneity can influence the mode and extent of dispersal of individuals among these subpopulations, which, in turn, may regulate their spatiotemporal dynamics. We have modelled a homogeneous metapopulation of the interacting host and parasite system, with closed boundary and dispersal limited to nearest neighbours, using the spatially explicit coupled map lattice approach. We study parasite invasion in this host-parasite metapopulation with different connectivities and landscape structure. The spatiotemporal dynamics of host and parasite on a homogeneous lattice is studied and the role of spatial (i.e., landscape fragmentation), and demographic heterogeneity in spatial pattern formation is evaluated. How long range connections affect the spatial dynamics of the host and parasite are also investigated. The homogeneous metapopulation shows spatiotemporally synchronous dynamics in the long-term. The primary role of both types of heterogeneity is to resist evolution of spatiotemporal synchrony in the lattice, and the dynamics in the metapopulation remains asynchronous for a very long time. Spatiotemporal synchrony in species population may be detrimental to persistence and is a potential problem for conservation biologists. Thus, evolution and maintenance of ecological and demographic diversity in nature seem to aid in species persistence at a metapopulation level.
Key words: metapopulation, spatiotemporal dynamics, Discrete Host-Parasite model, Synchronisation