ECOL 1000 UGA CONNELLY EXAM 3 QUESTIONS AND ANSWERS 2025

ECOL 1000 UGA LATEST
CONNELLY EXAM 3
fewer - ANSWERS-small islands support ____ species than large
islands.


more - ANSWERS-islands near the mainland have ______ species than
those further away


extinction event - ANSWERS-sharp decrease in diversity and abundance
of macroscopic life; occurs when the rate of extinction increases with
respect to the rate of speciation


background rate of extinction - ANSWERS-average rate of extinction
that occurred before the appearance of humans


1 species/yr - ANSWERS-how many species are expected to be lost per
year on average based on the background rate of extinction


1,000-10,000 x the rate - ANSWERS-how many times the background
rate of extinction are we predicted to be at right now?


1. endemic or small local populations
2. species that migrate seasonally
END OF
PAGE 1

, ECOL 1000 UGA LATEST
CONNELLY EXAM 3
3. specialized habitat requirements
4. large home ranges
5. conflicts w humans or used by humans - ANSWERS-things that
increase a species' risk of extinction:


1. habitat loss/alteration
2. invasive species
3. coextinctions
4. commercial exploitation
5. disease - ANSWERS-main threats to biodiversity


habitat fragmentation - ANSWERS-localized clearing; reduction of large
habitat into smaller, isolated patches


wolf & giant african land snails (video) - ANSWERS-example of
invasive species


IUCN (international union for the conservation of nature) red list -
ANSWERS-defines classifications of species likelihood of extinction in
their "red list"

END OF
PAGE 2