Written by Allyson Muth, Forest
Stewardship Program Associate, Center for Private Forests at Penn State
December 15, 2017 – University Park,
PA – As forestry educators, our role is to advance an
understanding of the
complexities of the woods, in hopes that greater understanding will lead to
well-informed decision-making and well-cared-for lands. One privilege of our
role is getting the opportunity to spend time with other forestry educators
from other states, to discover new ideas and synergies as we promote good
forest stewardship.
Earlier this month a colleague from Vermont shared the idea of a Woods Life
List. We were struck by the simplicity of the idea, the recognition of the life
list as a way for landowners to understand what they have on their land, and
perhaps to track change – new species coming into an area, existing species
falling off. With the start of the New Year around the corner, we lay a
challenge on you – create a tree and plant life list for your woods. You may
have a start of it in your forest management plan. You know trees and plants
that you enjoy seeing. But what would a complete list capture that is new for
you?
Tree species have ecological niches –
growing conditions where they are more likely to succeed in out-competing other
species. Your forest may be an oak-hickory forest type, a northern hardwoods
forest type, beech-maple, etc. Each type has tree species that are likely to
occur within that region. But each site also has micro-niches where conditions
are ideal for species not characteristic of the overarching forest type. What
occurs on your land?
If you are or know birders, you know
that life lists play a role, even for the most novice. Some are more dedicated
than others in their tracking, but the finding of rarities, the tracking of the
common, the creation of the physical record of species seen represent
accomplishment.
If you’re starting life lists of
trees in the winter, familiarity with tree buds, branching patterns, and bark
is necessary. There are some excellent guides out that that cover bark and
buds; having one on your shelf would be helpful. Bark is variable, but often
unique between species. Branching patterns and
structure will narrow things down quite a bit – trees with opposite branching
are only a few: maple, ash, dogwood, honeysuckles, and horsechestnut. And if
bark and branches can help you narrow it down, I will admit to searching the
ground for fallen leaves to confirm my suspicions. Winter tree ID is about
observation and learning the tricks to help you identify.
Starting in the winter means that the
life list will first be populated by trees and woody shrubs – things you can
identify without leaves. As the growing season comes in, pay attention to the
early green. On woody shrubs that will likely indicate some non-native species
– worth tracking on a life list? Maybe, but definitely worth noting for
assessing extent and potential for control. There are also myriad spring
ephemerals that make early appearances and are worthy of acknowledgement on
your list. For many of the spring ephemerals, their presence is a good indicator
that your deer population is in balance with the land, as those early natives
are tasty treats.
As spring progresses, flowers and
reproductive structures like cones (for the conifers) offer additional clues to
identity. Recognizing that tree flowers are not often showy means that close
observation (and a good pair of binoculars – trees are tall) will aid in
identification.
Once we get to full leaf out,
identification of trees and shrubs is usually the easiest. Again, a good
guidebook is an excellent resource. Learn your leaf structures: needles versus
broad leaves, compound versus simple, lobed versus unlobed, leaf edge
descriptions – these are critical vocabulary for using many guides. You can
currently access the Summer Key for Pennsylvania Trees on the Extension website
(https://extension.psu.edu/programs/4-h/leaders/resources/publications/d0410e-summer-key-for-pennsylvania-trees.pdf).
It contains excellent introductory descriptions of leaf structures.
Aesop was the first to coin the
adage, “familiarity breeds contempt,” but we would offer a contradictory
statement: familiarity breeds understanding, and understanding leads to
well-informed decision making. Get familiar with your woods or the woods around
you. Add a Tree Life List to your New Year’s resolutions. Get to know your spot
and then go see what else you can discover in forests around the state,
country, and world. Gaining familiarity and appreciation for trees and
plants in the woods means we’ll be more likely to protect and
take good care of it.
The Pennsylvania Forest Stewardship Program
provides publications on a variety of topics related to woodland management.
For a list of free publications, call 800 235 9473 (toll free), send an email
to RNRext@psu.edu, or write to Forest Stewardship Program, Natural Resources
Extension, The Pennsylvania State University, 416 Forest Resources Building,
University Park, PA 16802. The Pennsylvania DCNR Bureau of Forestry, USDA
Forest Service, Penn State Extension, and the Center for Private Forests at
Penn State, in Partnership through Penn State’s Department of Ecosystem Science
and Management, sponsor the Forest Stewardship Program in Pennsylvania.