Scientists & Staff
R. Talbot Trotter, III
Ecology and Management of Invasive Species and Forest Ecosystems
51 Mill Pond Road
Hamden, CT 06514
Current research is focused on three inter-related areas, which can be generally described as:
1) The biology, phenology, and distribution of invasive forest insects and their biological controls.
2) The direct impacts of invasive insects on hosts, and indirect effects on associated ecological communities.
3) Linking points 1 and 2, and scaling/modeling these interactions across larger spatial and temporal scales.
Currently, the invasive hemlock woolly adelgid (Adelges tsugae) and the Asian Longhorned Beetle (Anoplophora glabripennis) provide excellen model systems for evaluating the ecological processes associated with the arrival, growth, and impact of invasive forest insects. Using the hemlock woolly adelgid for example, four questions are being investigated.
A) How many, and which species are associated with eastern hemlock in the eastern United States? How many of these species are dependant on hemlock, and how does the removal of hemlock (or the degradation of hemlock condition) alter the capacity and suitability of this forest resource?
B) How does the use of systemic insecticides such as imidacloprid, which is used to control the hemlock woolly adelgid, impact the non-target community of arthropods on easter hemlock? How do these impacts evolve through time relative to the temporal impacts of insecticides on the target species?
C) How does the genetic composition of the host hemlock relate to the associated arthropod community? Can hybrid hemlocks be used as ecological surrogates for the biodiversity associated with eastern hemlock in the eastern United States?
D) How do adelgid population dynamics respond to landscape heterogenaity, and does this heterogenaity interact with the use of biological controls and bio-pesisticides used to control the hemlock woolly adelgid?
Featured Publications & Products
- Trotter III, R. Talbot. 2011. Long-term weather variability and shifting distribution limits of the invasive hemlock woolly adelgid (Adelges tsugae Annand).
- Trotter, R. Talbot, III; Shields, Kathleen S. 2009. Variation in winter survival of the invasive hemlock woolly adelgid (Hemiptera: Adelgidae) across the eastern United States.
- Trotter, R. Talbot III. 2009. Hemlock canopy arthropods: biodiversity on a threatened host..
- Trotter, R. Talbot; Shields, Kathleen S. 2009. Assessing assumptions about adelgid attributes: landscape patterns of an invasive insect.
- Trotter, R. Talbot; Montgomery, Michael E. 2008. Modeling environmentally driven life cycles for hemlock woolly adelgid and the biological control agent Scymnus sinuanodulus.
Publications & Products
- Nehme, M.E.; Trotter, R.T.; Keena, M.A.; McFarland, C.; Coop, J.; Hull-Sanders, H.M.; Meng, P.; De Moraes, C.M.; Mescher, M.C.; Hoover, K. 2014. Development and evaluation of a trapping system for Anoplophora glabripennis (Coleoptera: Cerambycidae) in the United States.
- Meng, P.S.; Trotter, R.T.; Keena, M.A.; Baker, T.C.; Yan, S.; Schwartzberg, E.G.; Hoover, K. 2014. Effects of pheromone and plant volatile release rates and ratios on trapping Anoplophora glabripennis (Coleoptera: Cerambycidae) in China.
- Trotter, R. Talbot; Morin, Randall S.; Oswalt, Sonja N.; Liebhold, Andrew. 2013. Changes in the regional abundance of hemlock associated with the invasion of hemlock woolly adelgid (Adelges tsugae Annand).
- Trotter, Talbot. 2013. Relationships among climate, forests, and insects in North America: Examples of the importance of long-term and broad-scale perspectives.
- Keena, Melody A.; Trotter III, R. Talbot; Cheah, Carole; Montgomery, Michael E. 2012. Effects of temperature and photoperiod on the aestivo-hibernal egg diapause of Scymnus camptodromus (Coleoptera: Coccinellidae).
- Morin, Randall S.; Oswalt, Sonja N.; Trotter, III, Robert T.; Liebhold, Andrew M. 2011. Status of Hemlock in the Eastern United States.e-Science Update SRS–038.
- Trotter, R. Talbot III. 2008. Climate matching: implications for the biological control of hemlock woolly adelgid.
- Trotter, R. Talbot III; Courter, Anthony W.; Turcotte, Richard M.; Onken, Brad. 2008. Incorporating hemlock woolly adelgid impacts into the Forest Vegetation Simulator model.
- Costa, Scott D.; Trotter, R. Talbot; Montgomery, Michael; Fortney, Michael. 2008. Low temperature in the hemlock woolly adelgid system.
- Trotter, R. Talbot, III. 2007. The effects of climate, geography, and time on hemlock woolly adelgid and its natural enemies.
National Research Highlights
|The Future of Hemlock Trees in the Eastern U.S. Remains Dicey|
The arrival of the hemlock woolly adelgid, an invasive insect from Asia, threatens the stability and sustainability of hemlock in the eastern U. ...