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University of Toronto Scarborough
Biological Sciences
Ivana Stehlik

BIOC63 Conservation Biology Lec1 Sept13 FIELD TRIPS?! (look up!) - only material covered in class will be on tests Global biodiversity: Pattern and Processes - 2010 is the official International Year of Biodiversity A. What is Biodiversity? - is a relatively young word - the context of the use is :one if concern for natural environment - there are different hierarchical levels - genetic - ex the genetic biodiversity of humans (different skin colours etc) - the genetic biodiversity of anything that inhibits earth (ex cow peas that have been breed to different types) - species - ex flowering plants, cichid fishes in Lake Victoria - most commonly used way for the term biodiversity - communities - ex looking at canada, how many community biodiversities there are of plants (permanent wet lands, tundra etc) - ecosystems - it lets us take in all of our worlds ecosystems (larger scale) - biomes - highest level - very loose term, looking at it globally - all in all, the most typical currency in biodiversity are species; how many different species there are in a given area B, How many species are there? - there are 1.75 million species living which have been described living today - 300,000 fossil species that have been described - and on average, 300 new species are being described per day - how many species including undescribed are there? (varies between scientists) - the estimate of what percent that have been already described varies - look at chart - depending on the groups, we really dont have a very good grasps on who is really out there - lacking knowledge on biodiversity - a lot of time and effort have been put into looking for which species there are in the Great Smoky Mountain National Park; but actually the only things are highly known are the vertebrates and vascular plants...for the non- vascular plantsfungi and invertebrates, most of them are unknown (so even in the highly studied area....although the first step to protecting is actually knowing what is there)
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