Matt Bracken, Associate Professor
My research evaluates the causes and consequences of biodiversity changes in marine ecosystems, including studies showing how nutrients, consumers, and stress modify diversity in marine communities and how species diversity and identity affect key biogeochemical processes. I am interested in how an interdisciplinary approach to biology, which explores the linkages between processes at different levels of biological organization, can enhance our understanding of how natural systems work. My biodiversity research is one example of this perspective. I study the processes that influence diversity change at the community level, but then take an ecosystem approach in asking how the diversity and identity of organisms influences their roles in mediating the transformation and flux of energy and matter. A related aspect of my work asks how consumers influence the supply of nutrients to primary producers in marine ecosystems.
Kylla Benes, Ph.D. Student
In recent decades, the effects of biodiversity on community and ecosystem processes have gained much attention among ecologists. While studies have revealed the importance of species diversity on ecosystem functioning, fewer studies have examined effects of other measures of biodiversity (e.g., functional diversity, genetic diversity). Since genetic diversity is the foundation of all other levels of biodiversity, understanding its effects is imperative to our understanding of ecological patterns and processes. Using intertidal seaweeds and their associated species assemblages, my research focuses on four themes: 1) genetic diversity and population structure of foundation species, 2) effects of intraspecific variation on population dynamics and stability, 3) impacts of genetic diversity on species diversity, and 4) consequences of genetic diversity on ecosystem functioning. When examining intraspecific diversity effects on communities and ecosystems, it will not only be valuable to investigate broad-level genetic diversity (i.e., genotypic diversity) but also variation in genetic based traits that have consequences for communities and ecosystems to elucidate underlying mechanisms driving patterns. Additionally, it is likely that patterns and processes in nature may be affected by both genetic and ecological effects and quantifying the relative magnitude of these (potentially) interconnected mechanisms will be important to our greater understanding of complex communities and ecosystems.
Christine Newton, Ph.D. Student
I have a wide range of research interests in coastal ecology ranging from wetland to subtidal habitats. These fragile habitats provide enormous economic, recreational, and ecological values and need to be carefully monitored and protected. My Master’s research at the University of Rhode Island examined the role that drifting macroalgal blooms played in salt marsh ecosystems and how their impacts altered trophic dynamics. Currently, I am examining the invasion of a new macroalga, Heterosiphonia japonica, in New England waters. This invasive alga can be extremely abundant, comprising 50-90% of the algal biomass where it has invaded (Newton et al. 2013). Therefore, it is likely this invasion will significantly alter subtidal habitats and impact multiple trophic levels. In addition to examining these ecological impacts, I am examining the factors that led to the successful establishment of this invasive species, such as rapid growth, high reproductive rates, and lower palatability than native species. My research uses a combination of manipulative field and laboratory experiments, as I believe both are necessary to thoroughly approach any scientific question.
Former Lab Members
Carolina Aguila, M.S. in Biology Student, Northeastern University (Fall 2009-Spring 2011)
Marcy Cockrell, M.S. in Marine Biology Student, Northeastern University (Summer-Fall 2009)
James Douglass, Postdoctoral Research Associate (Summer 2010-Summer 2012)
Annick Drouin, Visiting Ph.D. Student, Laval University (Summer-Fall 2011, Summer 2012)
Adam Fuller, M.S. in Marine Biology Student, Northeastern University (Summer-Fall 2008)
Brendan Gillis, M.S. in Biology Student (Fall 2010-Spring 2014)
Natalie Low, Undergraduate Intern, Brown University (Summer 2010)
Michael Hutson, Research Intern (Summer 2011)
Valerie Perini, M.S. in Biology Student (Spring 2010-Fall 2013)
Molly Roberts, M.S. in Marine Biology Student, Northeastern University (Summer-Fall 2011)
Isaac Rosenthal, Undergraduate Intern (Summer 2012)
Brian Taggart, M.S. in Marine Biology Student, Northeastern University (Summer-Fall 2010)
Robyn Zerebecki, M.S. in Marine Biology Student, Northeastern University (Summer-Fall 2009)