PPT-Population and Community Ecology

Population Characteristics Density of individuals per unit of area Determined by counts sample size estimate indirect indicators markrecapture Dispersion. Vegetation and Terrestrial Wildlife. Vegetation. Plant Communities. Disturbance. Unique Communities. Wildlife. Amphibians and Reptiles. Birds. Mammals. Terrestrial Ecology: Vegetation. Goals of vegetation sampling on ODOT projects. 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. Unit. Keep an eye out for “The-Owl” and raise your hand as soon as you see him.. He will be hiding somewhere in the slideshow. “Hoot, Hoot”. “Good Luck!”. Keep an eye out for “The-Owl” and raise your hand as soon as you see him.. Patch selection (e.g., Marginal Value Theorem). Prey selection (optimal diet theory). Moving beyond feeding (energy intake): predation risk. . (u/g). Patch selection. :. Consider a forager moving among many patches during a foraging bout (rodent among seed caches, pollinator among flowers, etc.). 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?. 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. Population. ecology. Community. ecology. Ecosystem. ecology. Landscape. ecology. Global. ecology. Introduction to Ecology . Populations. Population ecology. Abundance. Dynamics . Density, dispersion, demographics, interrelationships with other populations. 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.. 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. 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 (. abiotic. conditions. A traveler should be a botanist, . for in all views plants form . the chief embellishment. Charles Darwin,. The Voyage of the Beagle. Belize. Anza-Borrego Desert,. California. Manning Park. 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.