College of Agriculture, Health and Natural Resources (CAHNR)<\/a>. CAHNR researchers provide the Eversource team with vital information about roadside vegetation in the state to support informed decision making to improve the resiliency of Connecticut\u2019s power grid.<\/p>\nBunce studies biomechanics, or how trees move in the wind, in forests across Connecticut. These measurements help Bunce determine how likely the tree is to be damaged or fall in a storm.<\/p>\n
Recent destructive storm events in the Northeast have inspired utility companies like Eversource Energy, researchers, and other collaborators to work together on management approaches that will help adapt our forests to disturbances like increased storm activity, in an attempt to better prepare communities in the face of climate change.<\/p>\n
\u201cThis is one element of the Eversource Energy Center\u2019s overall work to keep Connecticut\u2019s power on,\u201d says Robert (Bob) Fahey, associate director of the Eversource Energy Center and Cloutier Professor in Forestry. \u201cAlong with initiatives focused on sustainable energy, advanced outage prediction modeling, and workforce development, we\u2019re taking a holistic view to addressing these challenges.\u201d<\/p>\n
The first measure Bunce looks at is frequency. This is a measure of how quickly the tree is moving back and forth. Tall, skinny trees have frequencies around 0.1 or 0.2. This means it takes 10 seconds to complete a sway from one side, to the other, and back again. Shorter, thicker trees have much higher frequencies. This means they complete a sway more quickly and could be seen to vibrate more than to sway in the wind.<\/p>\n
Trees with higher frequencies tend to be more stable and less likely to fall during strong wind events. That stability seems to be mostly based on the stouter shapes of trees with higher sway frequency.<\/p>\n
Bunce obtains these measurements using instruments called inclinometers. The device is kept in a weather-proof box and strapped to the tree. It then measures the incline of the tree in both the North-South and East-West directions.<\/p>\n
Tree frequency has long been studied in plantation forests, primarily in Europe. This effort is the first-time researchers have applied these concepts to an area like Connecticut.<\/p>\n
This has come with challenges, as Connecticut\u2019s forests are significantly different than timber plantations, which have a single type of tree that are all the same age. Nutmeg State forests are much more complex, both structurally, and with regards to biodiversity. The ways in which we use them are also more complex.<\/p>\n
\u201cOur forests are multiple-use,\u201d Bunce says. \u201cAnywhere we grow trees for timber is also somewhere people hike, or gather mushrooms, or watershed protection, and it\u2019s a wildlife habitat, too. We have a lot more responsibility than just growing timber.\u201d<\/p>\n
The other measure Bunce looks at is displacement. This determines how far the tree sways in the wind. While a tree\u2019s frequency is always the same, regardless of how strong the wind is, its displacement depends on wind strength.<\/p>\n
\u201cIt\u2019s important to us, because how far the tree sways is a big deal in regards to if it falls down,\u201d Bunce says.<\/p>\n
There has been much less research on this measurement due to the complications and variability in wind strength and speed.<\/p>\n
Woodland Workouts<\/strong><\/p>\nLuckily there are methods to help trees become more resilient \u2013 they need to \u201cwork out.\u201d For instance, gradually exposing a tree to more wind develops its resistance and makes it more resilient in a storm.<\/p>\n
To do this, the team has applied their Stormwise Prescription to test forests around the state. This prescription involves assessing a roadside forest and first removing trees that are growing into the road, over powerlines, or are \u201cstressed\u201d in some regard. Stressed trees include those that are hollow, infected with fungus, or ridden with pests.<\/p>\n
Next, healthy, well-balanced trees are selected for retention, and the team removes trees around them to strategically open patches in the forest to let in more wind. This frees up resources for the remnant trees, allowing them to grow stronger. This kind of technique is known as adaptive silviculture, a complex process of controlling the growth of trees to improve the overall capacity of the forest to handle change and disturbances like storms.<\/p>\n
\u201cWe\u2019ve got a lot more science to do,\u201d Bunce says.<\/p>\n
The Art of the Forest<\/strong><\/p>\nBunce, who studied art as an undergraduate, saw an important opportunity to help the community connect with the work she\u2019s doing through unconventional outreach.<\/p>\n
She collaborated with the Digital Experience Lab at the Aldrich Contemporary Art Museum in Ridgefield to produce an artistic display of her work. For the exhibit, which was displayed from Oct. 2019 to Aug. 2020, Bunce attached an inclinometer to a tree and its information was transmitted to the Aldrich Museum. There, guests could watch a live digital feed of the tree\u2019s movement.<\/p>\n
\u201cThe thing that always drew me to art is that you can use it to tell a story and using it to tell the story of science is brilliant and vital,\u201d Bunce says.<\/p>\n
Bunce says she hopes outreach like this installation helps the community understand the value of her work.<\/p>\n
\u201cI want people to look around and see what\u2019s happening and work together,\u201d Bunce says. \u201cWe can do a tiny amount of adaptive silviculture. But what\u2019s really going to matter is if everyone gets on the same page.\u201d<\/p>\n
The Eversource Energy Center at the University of Connecticut is a partnership between New England\u2019s largest energy provider and the School of Engineering; the College of Agriculture, Health and Natural Resources; and the School of Business, located in the Innovation Partnership Building at UConn Tech Park. The partnership, established in 2015, is dedicated to using cutting-edge research to solve real-world challenges where weather, security, and energy intersect.<\/em><\/p>\nFollow <\/em>UConn CAHNR<\/em><\/a> on social media<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"Techniques that rely on adaptive silviculture can help trees become more resilient to severe storms<\/p>\n","protected":false},"author":127,"featured_media":152900,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_crdt_document":"","wds_primary_category":0,"wds_primary_series":0,"wds_primary_attribution":0,"footnotes":""},"categories":[2224,1866,1715,2304,2300,2076,2235],"tags":[],"magazine-issues":[],"coauthors":[2140],"class_list":["post-182967","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cahnr","category-engr","category-community-impact","category-extension","category-natural-resources-environment","category-research","category-today-homepage"],"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","acf":[],"publishpress_future_action":{"enabled":false,"date":"2026-06-02 23:51:51","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/posts\/182967","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/users\/127"}],"replies":[{"embeddable":true,"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/comments?post=182967"}],"version-history":[{"count":6,"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/posts\/182967\/revisions"}],"predecessor-version":[{"id":184929,"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/posts\/182967\/revisions\/184929"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/media\/152900"}],"wp:attachment":[{"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/media?parent=182967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/categories?post=182967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/tags?post=182967"},{"taxonomy":"magazine-issue","embeddable":true,"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/magazine-issues?post=182967"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/today.uconn.edu\/wp-rest\/wp\/v2\/coauthors?post=182967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}