PPT-Ecology 8310 Population (and Community) Ecology

Patch selection eg Marginal Value Theorem Prey selection optimal diet theory Moving beyond feeding energy intake predation risk ug Patch selection Consider a forager moving among many patches during a foraging bout rodent among seed caches pollinator among flowers etc. Image from Wikimedia Commons. Global human population. United Nations . projections (2004) . (. red. , . orange. , . green. ). . U. S. Census Bureau modern (. blue. ) . & historical . (. black. ) . Population (and Community) Ecology. Competition: the R* approach. Consumer and resource dynamics. A graphical approach. ZNGIs. Consumption vectors. Resource renewal. Putting it together. Tests. The basics:. 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. Population (and Community) Ecology. The effects of diversity. Background. Tilman. and Downing 1994. Species vs. functional diversity. Foodwebs. (instead of primary producers only). Form of BES relationship. Image from Wikimedia Commons. Global human population. United Nations . projections (2004) . (. red. , . orange. , . green. ). . U. S. Census Bureau modern (. blue. ) . & historical . (. black. ) . Population (and Community) Ecology. Predator-prey. Response to Thursday…. Empirical patterns:. Luckinbill's. experiments. Huffaker's. mites. Lake patterns in . phyto-zoop. as f(nutrients). Causes of positive increases in consumer-resource. 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. . 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.). 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…. 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. 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. 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. 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.