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Indiana Bat
Test on Indiana Bat
13
Environmental Studies
Undergraduate 2
10/24/2015

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Cards

Term
How far do Indiana bats travel migrate?
Definition
Up to 300 miles
Term
How do females roost?
Definition
Females form maternity colonies in hollow trees or under loose bark of living or dead standing trees
-Less than 100
Term
How much sun do their roosts need?
Definition
Suitable roost trees require a minimum of 7 hours of direct sunlight per day
Term
How do males roost?
Definition
Males roost singly or in small groups in hollow trees or under loose bark of living or dead standing trees
Term
What kind of trees do bats need?
Definition
Standing dead trees are selected over living trees
Important living tree species for maternity colonies include shagbark hickory and white oak (loose bark)
Term
How big do the trees need to be?
Definition
Trees over 20 inches diameter breast height are selected
Term
How many trees do they use?
Definition
Maternity colonies typically use 10 – 20 different trees each year
1-3 primary
Term
How much do they eat?
Definition
Indiana bats eat up to half their body weight in insects each night
About 0.25 ounces
Term
What is bat hibernation like?
Definition
Indiana bats require cool, humid caves and mines with stable temperatures under 50oF but above freezing
Hibernate ~6 months
Term
What are the two size categories of trees needed?
Definition
Living trees
Retain >3 trees/acre >20 inches dbh
Retain >6 trees/acre >11 inches dbh
Term
How can you manage habitat for bats?
Definition
Retain all living shagbark hickory and white oak trees over 12 inches in diameter for maternity roosts within forest tracts where trees are harvested
Selection cutting
Shelterwood harvesting
Term
When should tree harvest occur?
Definition
Tree harvesting should occur between 1 October and 31 March
Term
Where should you not harvest trees?
Definition
Avoid harvesting trees within 100 feet of any known hibernaculum
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