PPT-Ecology 8310 Population (and Community) Ecology

Seguing into from populations to communities Species interactions LotkaVolterra equations Competition Adding in resources Species interactions Competition Predation Herbivory. and . dis. -assembly. Topics for today. Assembly Rules: concepts, conflicts. Early work: plant succession from the 1910’s (and relevance in the 2010’s). Diamond’s . biogeographical. work in the 1970’s. Gerry Quinn. Deakin University. Data sets in community ecology. Multivariate abundance data. Sampling or experimental units. p. lots, cores, panels, quadrats ……. u. sually in hierarchical spatial or temporal structure. BIOL 7083. Community Ecology. Robert H. MacArthur:. Life, Work, and Legacy. Biographical Sketch. Robert H. MacArthur. April 2, 1930 – November 1, 1972. Personal Background. Born in Toronto, Ontario. holism. reductionism. climax community. Organicism. teleology. deep ecology. Gaia theory . positive versus negative biotic interactions. pristine myth. Films often portray organisms and ecological interactions . In short, . ecology . is the scientific study of the . interactions of organisms with their environment. .. All organisms . interact. with other organisms in their surroundings and with the nonliving portion of their environment. . Beyond two trophic levels. HSS 1960. Oksanen. et al. 1981. Control, Limitation, Regulation. Bottom-up vs. Top-down. Trophic cascades. Beyond two trophic levels…. Why is the world green?. Observation: Plants are abundant; thus…. Predator-prey theory. Basics (. Lotka-Volterra. ). Functional responses and risk. Effect on phase-planes. Dynamics. Paradox of enrichment. Predator interference and ratio dependence. How do predators respond to prey?. WORKSHEET. Go over Sections F, G, and H. AFTER THE QUIZ. Work on Section I. DO NOW. Get out EOC Daily sheet, worksheet, and notes. BIOLOGY EOC BIO47. The diagram below shows a plant’s response to stimuli.. An interbreeding group of the . same species. living in the same general area. may be distinguished by natural or . . arbitrary boundaries. Population Density vs Dispersion. the number of individuals per unit area or volume. and. Levels Of Organization in . Biology and Ecology. Springfield Central High School. Questions to Answer. Daily Problem Set Unit 2- #1. 1. . Explain what ecology is. . 2. . In the relationship between the lynx and the hare, what factors, biotic and . I. Biotic and . Abiotic. Factors. A. Biotic Factors-- all living things that inhabit an environment. 1. relationships with organisms of the same or different species. . B. . Abiotic. Factors: The nonliving environment. Introduction to linking demography, population growth and extinction due to climate warming. What is Population Ecology? . Goal is to understand . factors. and . processes. that govern . abundance. Geography. Resources. Phylogeny. Community. Redrawn from Fauth . et al. . (1996). Community. – collection of species that occur at the same place & time, circumscribed by natural (. e.g. ., serpentine soil), arbitrary, or artificial (. SW: discuss with their groups how estimating a population could be used in a real world situation.. Population Ecology. Measuring a population. Growth Curves. Biotic Potential vs. Environmental. Resistance.