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Ecology. oikos + ology. “study of home”. Ernst Haeckel. Ecology. How organisms interact with each other and their environment. Ecology – the social movement. Individual. Population. Community. Ecosystem. Population Ecology. Winter deer count. Community Ecology. Stream survey.
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Ecology oikos + ology “study of home” Ernst Haeckel
Ecology How organisms interact with each other and their environment.
Population Ecology Winter deer count
Community Ecology Stream survey
Ecosystem Ecology Measuring abiotic factors
Populations can increase their RANGE Cattle egret
Iriomote Wildcat Inhabits only one small Japanese island Felis iriomotensis
Devil’s Hole pupfish Cyprinodon diabolis
Devil’s Hole, Death Valley The entire habitat for Cyprinodon daibolis.
Demography Example: a survivorship curve
Life History and Fitness
Life History Salmon spawning migration
Life History Salmon spawning migration
Life History Salmon spawning
Life History the end
Life History the pay off Newly hatched salmon fry
Life History Semelparity Breed once and die
Semelparous organisms Agave (century plant) Reproductive adult plant Seedling (life history success)
Life History Iteroparity
r and k selected life history strategies k k-selected: spiny dogfish (Squalus) r-selected: Atlantic cod (Gadus) r
r and k selected life history strategies r-selected: dandelion k r k-selected: redwood tree
Human population growth An exponential curve, still on the up swing