C starvation or hydraulic failure?
Seedlings in the greenhouse getting ready for the shade and dry-down experiment
Very clear browse line created by white-tailed deer at the University of Michigan Biological Station.
Sun-up at the Arb
Daybreak at the U-M Nichols Arboretum
Chris Karounos (MSc 2019) helping with a seedling census in a cedar swamp near UMBS.
Lab photo from our summer 2019 trip up to Isle Royale National Park as part of a research project measuring the effects of moose herbivory on growth and production of native forests.
This guy decided to visit us as we were camping on Siskiwit Bay during our Isle Royale trip.
Mikaila Davis, one of my mentees in the Doris Duke Conservation Scholars Program, taking measurements for her independent research project.
Greenhouse seedlings getting ready for over-wintering outside the Matthaei Botanical Gardens.
Early spring canopy conditions
At the beginning of spring, seedlings have access to much more sunlight in the understory than they do once the canopy closes.
Acer saccharum seedlings
The seedlings I use in my research are all grown in a greenhouse and transplanted once they have fully expanded their leaves.
Morning mists rising from Douglas Lake at the University of Michigan Biological Station
Acer saccharum bud swelling
Datasheet for scale
Acer saccharum leaf unfolding
This seedling has experienced bud burst and the leaves are unfurling
Acer saccharum expanded
Once the leaves have expanded, the plant turns from a carbon source to a carbon sink as it begins to assimilate carbon via photosynthesis.
Acer saccharum senescing
Deciduous plants resorb nutrients and then excise leaves in fall so that the nutrients can be used easily the following growing season.