Biodiversity The importance of being different
Biodiversity • _______________________________________ • This includes microorganisms (bacteria) as well as larger organisms (you)
Biodiversity • Some ecosystems are highly diverse while others are not, this is ____________________ ______________________.
Biodiversity • Areas with low biodiversity are at a higher risk for _________________. • Extinctions in areas like this would lead to ______________________________________ ___________
Biodiversity Hotspots • ____________________________________________________________ • About 25 of these hot spots have been identified. They cover about 2% of the globe.
The Importance of Biodiversity • The more species which are present on the Earth, the more total ________________ there is. This means there are more opportunities for humans (and other organisms) ___________________________
The Importance of Biodiversity • Food sources • People in this country eat mainly a few different types of plants and animals. These species are bred to produce more and have less variation. _______________________. Why might this be a problem?
The Importance of Biodiversity • Much of the fruit we eat needs to be __________________. While pesticide use can decrease the amount of destructive insects, it can also kill pollinators if not used efficiently. What other problems might pesticide use cause?
The Importance of Biodiversity • Medicine sources • Many modern medicines come form ___________________________________________ • Many plants have not even been studied for beneficial compounds • Industrial materials • __________________ • _______________ • _______________ • _______________
Lost Biodiversity: An American Example • The __________________was attacked over 100 years ago by an Asian fungus. • The fungus causes the trees to die before they can produce nuts • The loss of this tree has affected:
Lost Biodiversity: An American Example • ___________________: American chestnut was among the fastest growing hardwoods of the eastern US. • Fast-growing species like American chestnut will be of great use to help alleviate the build up of carbon in the atmosphere through their uptake and storage of carbon.
Lost Biodiversity: An American Example • __________________:Native wildlife from birds to bears, squirrels to deer, depended on the tree's abundant crops of nutritious nuts. • Chestnuts have a higher food value than acorns so could ______________ __________________________
Lost Biodiversity: An American Example • ___________________________:As winter came on, attics were often stacked with chestnuts • Springhouses and smokehouses were hung with hams and other products from livestock that had been fattened on the nuts. And what wasn't consumed was sold.
Lost Biodiversity: An American Example • ______________:The tree grew straight and often branch-free for 50 feet. • Loggers tell of loading entire railroad cars with boards cut from just one tree. Straight-grained, lighter in weight than oak and more easily worked, chestnut was as rot resistant as redwood. • It was used for virtually everything - telegraph poles, railroad ties, shingles, paneling, fine furniture, musical instruments, even pulp and plywood. American Chestnut Foundation
Loss of Biodiversity • ____________________________________________________________________________