ECOL 1000 UGA Connelly Exam 3 Questions And
Answers Verified 100% Correct
fewer - ANSWER -small islands support ____ species than large islands.
more - ANSWER -islands near the mainland have ______ species than those
further away
extinction event - ANSWER -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 - ANSWER -average rate of extinction that occurred
before the appearance of humans
1 species/yr - ANSWER -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 - ANSWER -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
3. specialized habitat requirements
4. large home ranges
5. conflicts w humans or used by humans - ANSWER -things that increase a
species' risk of extinction:
1. habitat loss/alteration
2. invasive species
3. coextinctions
4. commercial exploitation
5. disease - ANSWER -main threats to biodiversity
, habitat fragmentation - ANSWER -localized clearing; reduction of large habitat
into smaller, isolated patches
wolf & giant african land snails (video) - ANSWER -example of invasive species
IUCN (international union for the conservation of nature) red list - ANSWER -
defines classifications of species likelihood of extinction in their "red list"
critically endangered - ANSWER -50% likelihood of extinction in 10 years
endangered - ANSWER -20% likelihood of extinction in 20 years
vulnerable - ANSWER -10% chance of extinction in 100 years
endangered species act (ESA) - ANSWER -(1973) law created to protect critically
imperiled species from extinction as a "consequence of economic growth and
development un-tempered b adequate concern and conservation"
US fish and wildlife service & NOAA - ANSWER -law was created and
administered by these 2 federal agencies
snail darter - ANSWER -this endangered species stopped the construction of a
dam and caused a supreme court case
exotic - ANSWER -species introduce either accidentally or deliberately by human
actions into places beyond its natural geographic range (ie. house sparrow)
invasive - ANSWER -an alien species whose introduction does (or is likely) to
cause economic or environmental harm or harm to human health (negative)
extirpated - ANSWER -locally extinct, but existing elsewhere still
brown tree snake - ANSWER -snake that made a lot or birds and lizards go extinct
in guam
Answers Verified 100% Correct
fewer - ANSWER -small islands support ____ species than large islands.
more - ANSWER -islands near the mainland have ______ species than those
further away
extinction event - ANSWER -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 - ANSWER -average rate of extinction that occurred
before the appearance of humans
1 species/yr - ANSWER -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 - ANSWER -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
3. specialized habitat requirements
4. large home ranges
5. conflicts w humans or used by humans - ANSWER -things that increase a
species' risk of extinction:
1. habitat loss/alteration
2. invasive species
3. coextinctions
4. commercial exploitation
5. disease - ANSWER -main threats to biodiversity
, habitat fragmentation - ANSWER -localized clearing; reduction of large habitat
into smaller, isolated patches
wolf & giant african land snails (video) - ANSWER -example of invasive species
IUCN (international union for the conservation of nature) red list - ANSWER -
defines classifications of species likelihood of extinction in their "red list"
critically endangered - ANSWER -50% likelihood of extinction in 10 years
endangered - ANSWER -20% likelihood of extinction in 20 years
vulnerable - ANSWER -10% chance of extinction in 100 years
endangered species act (ESA) - ANSWER -(1973) law created to protect critically
imperiled species from extinction as a "consequence of economic growth and
development un-tempered b adequate concern and conservation"
US fish and wildlife service & NOAA - ANSWER -law was created and
administered by these 2 federal agencies
snail darter - ANSWER -this endangered species stopped the construction of a
dam and caused a supreme court case
exotic - ANSWER -species introduce either accidentally or deliberately by human
actions into places beyond its natural geographic range (ie. house sparrow)
invasive - ANSWER -an alien species whose introduction does (or is likely) to
cause economic or environmental harm or harm to human health (negative)
extirpated - ANSWER -locally extinct, but existing elsewhere still
brown tree snake - ANSWER -snake that made a lot or birds and lizards go extinct
in guam
