PPT-Ecology 8310 Population (and Community) Ecology

Beyond two trophic levels HSS 1960 Oksanen et al 1981 Control Limitation Regulation Bottomup vs Topdown Trophic cascades Beyond two trophic levels Why is the world green Observation Plants are abundant thus. Image from Wikimedia Commons. Global human population. United Nations . projections (2004) . (. red. , . orange. , . green. ). . U. S. Census Bureau modern (. blue. ) . & historical . (. black. ) . 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. 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. . Context. Context. What accounts for the distributional limit?. d. ispersal (perhaps with . Allee. effects). b. iotic and abiotic factors. If environmental factors, then:. λ. (N≈0) > 1 within distribution. 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. HW #1. Age-structured populations. Stage-structure populations . Life cycle diagrams. Projection matrices. Context: Sea . Turtle . Conservation. (But first … background). Population. Structure. :. Seguing into from populations to communities. Species interactions. Lotka-Volterra. equations. Competition. Adding in resources. Species interactions:. Competition (- , -). Predation (+ , -). (. Herbivory. 41:. Ch. 42:. Ch. 44:. Ecology. Ecology. : study of interactions between organisms and their environments – science of relationships, studied by ecologists. Abiotic . Factors:. non-living parts of an organism’s 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. What is a population and how do ecologists study it. Explain . the difference between a niche and . habitat. Explain the predator/prey . relationship and carrying . capacity on the graph. . Explain why animals fight.