BIO F314: Conservation Biology
Chapter 2 –Threats to Biological
Diversity
•Current extinction rates –100 to 1000 times
•Sixth extinction
•https://www.youtube.com/watch?v=VJK0geu
Rcps
•Hunting and bottleneck effect
•In recent past, amphibian extinction rate has
been among the highest.
•e.g. Gypsvulture decline from India –
consumption of the veterinary drug, diclofenac.
•https://www.youtube.com/watch?v=Jo0LTZQ3
KA4
•The
IUCN Red List
is the world's most
comprehensive inventory of the global
conservation status of plant and animal
species. species.
•
www.iucnredlist.org
–Type in the name of the
desired animal and know all about it
•Island species and
competitors, predators,
diseases
•
Guns, Germs and Steel
•
Guns, Germs and Steel
Island biogeography model
(McArthur and Wilson)
•Large islands will have greater number of
species than small islands.
Beetle diversity
Galapagos island diversity
•https://www.youtube.com/watch?v=Li9xo0mL
-5U
•Floods in China linked to Cultural Revolution.
Proposed interlinking of rivers in India –An ambiti ous
Civil engineering project
River interlinking
•https://www.youtube.com/watch?v=8wV1qK
N1oXc
Box 2.2 -Biodiversity loss in Orissa’s Chilkalake
Habitat fragmentation and seed dispersers •https://www.youtube.com/watch?v=0m6AjW
Z2p8I&t=10s