globe phenology investigation budburst 2002 & 2007 model secondary school for the deaf
TRANSCRIPT
GLOBE Phenology Investigation
Budburst 2002 & 2007
Model Secondary School for the Deaf
Observing two tree species
Silver MapleAcer saccharinum
•Crab Apple
•Pyrus coronaria
We began observations on Feb 20, 2007
Daily observations
Silver Maple flowersMarch 12, 2007
March 14, anthers
Crab Apple budburst
Flowers & leaves burst by Mar 17
Swelling March 15
A late snow… April 7
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In Indiana, students reportedthat this snow killed the CrabApple blossoms.
Silver Maple
Crab Apple
Silver Maple Leaves burst#3 bud burst on April 11
Measuring the Leaf growthevery day
Bud and leaf drawings
Temperature data
Precipitation data
What we have learned….
“I was not aware of budburst before.” Data showed differences in 2002 and
2007 Maple budburst was delayed in 2007 The two tree species had different
patterns Different species respond differently to the
environment
What we learned…
Flower buds respond differently than leaf buds.
Cold temperatures delayed the Crab Apple but did not seem to change the Maple.