Tawny Simisky, UMass Extension Entomologist, will discuss the frequently seen insect pests of trees & shrubs in the landscape during the 2020 growing season. This presentation will provide tips and tricks for diagnosing insects in the field as well...

Jennifer Byerly, Project Learning Tree, will discuss how social media platforms like Twitter, Instagram, LinkedIn and Facebook offer arborists the opportunity to foster an interest in, and awareness of, urban trees. 

Forrest Bowlick, Ph.D., Univ of Massachusetts, introduces and outlines the science and practice of digital map-making and spatial techniques for arborists & urban foresters. 

Diameter at Breast Height (DBH) is an enormously important metric for foresters, arborists, researchers, contractors, and the general public. With single-stemmed species, it is used to estimate timber volume, biomass, ecosystem services, and...

Diversification of urban forests is essential to enhance their resilience to future biotic
threats as well as those posed by a changing climate. Arboreta and botanic gardens
host a wide range of plant material that can be evaluated to...

To keep pace with the increasing impacts of climate change, people across the country are planting more and more trees. But how will you track these trees to make sure you get the optimal return on this investment of time and resources? Join us for a...

Positive interactions between people and nature inspire behaviours that are in harmony
with biodiversity conservation and also afford physical and mental health benefits.
Since most people live in towns and cities, urban greenspaces are...

Field monitoring of urban trees is essential to learn how urban forests change over time. Many arborists and urban forest managers worldwide seek to understand how their tree systems are faring in terms of growth, health, and mortality. The Urban Tree...

Emerald ash borer (Agrilus planipennis) was first discovered in southeastern Michigan in 2002. Accidentally introduced on solid wood packing material from Asia, EAB has since spread to nearly all states within the native North American range of its...

Trees grow with, and adjust to, large lateral and vertical loads caused by wind and gravity. Storms with strong winds and ice can push trees beyond their ability to reconfigure or fall back to reduce drag. Exceeding tree structural ice and wind load...

Trees constitute the foundation of our natural ecosystems and contribute considerable value to the economy. Emerging infectious diseases, such as the chalara fungus (Hymenoscyphus fraxineus) that infects ash (Fraxineus excelsior), are destroying tree...

With increased intensification in cities throughout the world, urban trees are often at risk of becoming damaged by construction impacts, such as utility trenching or pavement / sidewalk repair. If the damage is severe and a tree loses a lot of its...

Across the country, a number of cities are setting ambitious tree canopy goals to fight the trend of a decline in tree canopy. Among the many causes of canopy loss, development is a key driver, and is one that communities can significantly influence...

The restoration of trees remains among the most effective strategies for climate change
mitigation.We mapped the global potential tree coverage to show that 4.4 billion hectares
of canopy cover could exist under the current climate....

This document was developed as a contribution to “mainstreaming biodiversity
into agriculture, forestry and fisheries”, as recommended at the 24th Session of the
Committee on Forestry in 2018. It also contributes to FAO’s Strategic...

The results of 14 years of monitoring ash mortality and forest ecosystems in Ohio and Pennsylvania show how EAB has impacted these landscapes. Rare “lingering” ash trees have been identified and studied to understand long-term survival prospects for...

We will explore how researchers from ecology, forestry and arboriculture have utilized biomechanics to understand how trees contend with the forces mother nature can throw at them during their long-life span. Biomechanics approaches integrate biology...

Tree planting can help communities achieve many resiliency goals such as cooling heat islands, reducing stormwater floods, and building neighborhood cohesion. But trees can only do these things if they survive and thrive to maturity. CommuniTree is a...

Tree health and risk is heavily influenced by the health and quality of the soil surrounding it. Soil provides trees with essential nutrients, water, support, gas exchange, and more, but these services are limited when, for example, soil is compromised...

Ash tree species in North America are under mortal threat from the Emerald Ash Borer (EAB), now in 35 states and five Canadian provinces. There are ongoing efforts to conserve this native tree species by producing genetically diverse, resistant...