Next Tree Mob™ -
2:30pm, November 7, 2016

Eastern dwarf mistletoe
Tree Mob™! Mechanisms of Mortality: Dwarf Mistletoe along the Maine Coast

Eastern dwarf mistletoe (Arceuthobium pusillum), a diminutive plant parasite, can fell a mature white spruce (Picea glauca) in a matter of years. Drawing upon observations at scales from hormone metabolism through whole-tree growth, Barry Logan, a Visiting Scholar from Bowdoin College, proposes a causal chain of events leading to white spruce decline. He relates the present-day ecophysiology of coastal Maine spruce stands to patterns of 19th century land use with relevance to the New England region. Meet at Accession # 611-93*A, Picea glauca, on Monday, November 7, at 2:30pm to learn more about this parasitic relationship.

Parking: Park along Bussey Street (keep tires off the sidewalk) and enter through Bussey Street Gate. Turn left to walk up Conifer Path. Cross over the Bussey Brook and turn right to walk east along the north side of Bussey Brook. Signs will be posted.

Public Transportation: Take the MBTA Orange Line to Forest Hills. At the upper level of the station, cross Washington Street and walk left to the Arboretum’s Washington Street Gate. Follow Blackwell Footpath to South Street. Cross South Street and re-enter the Arboretum. Walk to the intersection and turn left on Hemlock Hill Road. Follow the signs indicating where to cross Bussey Brook and then head west to the meeting location.

See map for gate locations and pathways.

Join us for a Tree Mob™!

What’s a Tree Mob™?

Tree Mobs are interactions with scientists or other specialists at the Arnold Arboretum, and provide another pathway to enjoy and learn in the landscape. Experts share little-known facts about our living plant collection, its relevance today, and its importance to future generations. A Tree Mob may attract a small group or a large gathering—we won’t know until it takes place. Join us in the landscape and discover something new.

What can I expect?

Plan to spend approximately 30 minutes learning about an interesting component of our collection. You can then continue your exploration of the Arnold Arboretum on your own. Tree Mobs are time, date, and location specific.

How does it work?

We will communicate about Tree Mobs by various means (see below). Using mobile technologies, such as a smartphone with location-awareness enabled, you will be able to navigate to the event location. You can also view and print a map we will provide with the day’s Tree Mob location on our website. With directions in hand, proceed to the designated meeting place to participate in our experiment for spontaneous learning.

How can I be notified?

  • Link to Tree Mob on your mobile device.
  • Sign up or manage email notification.
  • Visit our Facebook page or follow us on Twitter.
  • Keep an eye on our website.
  • Scan this QR code with your mobile device.