Thank you for your continued participation in Nature's Notebook! This spring, we're especially interested in tracking the following species.
Cloned Lilacs and Dogwoods
Plant and monitor a cloned lilac or dogwood! Observations of cloned plants carry extra value, as differences seen among individuals can be attributed to variation in local environmental conditions, rather than to differences among the plants themselves.
Common Lilacs and Native Flowering Dogwoods
Your observations of common lilac (Syringa vulgaris) and native flowering dowgood (Cornus florida) life cycle events can enhance the decades of lilac phenology observations that have been collected across the United States.
Maples, Oaks, and Poplars
Help scientists and natural resources managers track the "green wave" - the flush of green that accompanies leaf-out - over the course of the spring season, and the spread of seasonal color across the country in the autumn.
Researchers at the University of Maryland are working to identify genes that could ensure tree survival as the climate changes. You can assist by collecting observations of leaf phenology for balsam poplar (Populus balsamifera) and quaking aspen (Populus tremuloides).
New England Leaf Out Project
Are trees in New England leafing out earlier than they did in the past? Do tree species leaf out at different times? Assist researchers at Boston University by tracking the leaf-out of ten deciduous tree species.
Juniper Pollen Project
Your reports of when juniper pollen is airborne can help improve models of pollen spread. These reports inform allergy and asthma alerts. Help scientists to improve their models of pollen spread, so you can better anticipate bad allergy days!