ENV100Y5 Lecture Notes - Lecture 32: Easter Island, Reconciliation Ecology, Forest Ecology
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ENV100Y5 Full Course Notes
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Document Summary
Continuation of session 30: conservation of species & habitats (done on session 31: Exploitation trade in endangered species: only 50 years left" for fish stocks (science: oct 2006) loss of biodiversity is driving collapse of fisheries. Habitat loss and fragmentation: forests are home to 90% of terrestrial species, 80% of world"s forests are degraded or destroyed. Invasive species: agriculture: losses of - billion annually. Implicated in global decline of songbirds, ground nesting birds, turtles, bats: especially problematic in australia, gal pagos islands. billion annually: stores 67 billion tonnes of carbon = 303 years of carbonemissions, carbon bank account = . 1 trillion. There is hope: effective management & restoration of habitats, enforcement of agreements (e. g. cities, creating incentives and sharing costs of conservation, limiting pollutants, captive breeding; seed banks, reconciliation ecology : promoting biodiversity in human-dominated ecosystems. Rapa nui (easter island: settled ~400 a. d. , peak ~1500 a. d. , sudden collapse, complete deforestation of island.
