Congratulations to the following students who were chosen to receive the prestigious Warren McLeod Fellowship awards!
Tina Barbasch – Annual Award Winner
“Conflict is a pervasive feature of animal societies. Conflicts arise whenever the interests of interacting individuals are not wholly aligned, yet many social interactions require individuals to reach some compromise. Parental care is a classic example of an interaction that is rife with conflict yet requires cooperation because both parents benefit from shifting the burden of care to the other. The outcome of conflict between parents has been modeled using economic game theory models, which assume that individuals act in their best interest but that their optimal behavior depends on how others behave. Studying how conflict among caring parents is resolved is critical to understanding why animals, including humans, form such alliances.
The goal of my research is to test plausible alternative hypotheses for the factors that govern how parents negotiate the amount of care to provide to their offspring, and create a more general framework for understanding conflict resolution. To accomplish this goal, I will build on existing empirical and theoretical work to test alternative hypotheses for how parents negotiate care utilizing a tractable study system: the clown anemonefish. Experiments will be conducted in a natural population of anemonefish (Amphiprion percula) in Papua New Guinea. The anemonefish system allows tests of alternative hypotheses simultaneously, where previous studies have only tested them in isolation. Furthermore, the majority of negotiation studies have been conducted in birds, so developing A. percula will function to test the generality of theoretical predictions. In sum, my research uses a tractable study species together with a rigorous alternative hypothesis testing approach to determine the factors that influence the outcome of negotiations. This research will help to create a more general framework for studying conflict resolution and potentially transform our understanding of negotiations over offspring care.”
Karina Scavo – Summer Award Winner
“Mangrove habitats have recently been proposed as climate refuges after reef coral species survived a bleaching event on nearby reefs. For this mangrove-refuge hypothesis to be true, mangroves must act as ecological sources, which would entail that they can support viable and self-sustaining coral populations, and that individuals within mangrove and reef habitats can acclimate to each habitat. This work seeks to shed light on this mangrove-refuge hypothesis by determining the long-term growth, survival, and self-recruitment capacity of a mangrove population of the thin finger coral,Porites divaricata in Calabash Caye, Belize. It also seeks to explore how these demographic processes are affected by spatial variation in the mangrove environment. This work will also explore the degree to which mangrove and reef colonies P. divaricata individuals can acclimate to a different habitat both at the morphological and molecular level, by evaluating how/if colony form and gene expression are altered after being transplanted to different environments. While evidence for the mangrove-refuge hypothesis is growing, the capacity for mangroves to act as a source has yet been studied. This work will help test the validity of the mangrove-refuge hypothesis and may be critical to the design of marine protected areas by revealing the significance of protecting and preserving the connectivity between mangrove and coral reef habitats which could have profound implications for future reef recovery.”
Emily Chua – Summer Award Winner
“For my Ph.D. research, I am helping to develop an underwater instrument to investigate biogeochemical processes occurring in marine sediments. The sediments are key sites of nutrient recycling and removal and act as a filter of reactive nitrogen from the coastal ocean. Human perturbations (e.g., sewage discharge, warming water temperatures) are affecting coastal ecosystems with potentially adverse consequences on the functioning of marine sediments. Currently, very little is known about the direction and magnitude of nitrogen fluxes in the sandy sediments which are prevalent in coastal marine ecosystems. This knowledge gap is due to the fact that it is notoriously difficult to sample in sandy sediments. Previous sampling methods fail to accurately represent the natural flow field of the interstitial water. This “porewater advection” is important in transporting solutes and reaction end-products in sandy sediments and must be accounted for in order to accurately estimate chemical fluxes. In collaboration with SRI International (St. Petersburg, FL) and Skidaway Institute of Oceanography (SkIO), I am working on a porewater sampler coupled to an underwater mass spectrometer – the POSUMS – which measures the concentrations of biologically-important dissolved gases (e.g., N2, N2O, O2, CO2, CH4) in the interstitial water of sandy sediments in situ. My role in this project is to guide the development of the POSUMS, from benchtop prototype to fully field-deployable instrument, and to use this instrument to better constrain nitrogen cycling in a local, anthropogenically-impacted estuary, Narragansett Bay (RI). Our ultimate vision is that the POSUMS will be deployed on the continental shelf and provide biogeochemical data which can improve global climate models.”
Nicholas Ray – Summer Award Winner
“My dissertation research is focused on how oysters and different oyster habitats change biogeochemical cycling in a temperate estuary (Narragansett Bay, Rhode Island). Oyster populations are increasing along the East Coast of the US primarily because of growing oyster aquaculture and to a lesser extent because of restoration efforts. Oysters can be described as ecosystem engineers – altering the environment they live in by the way they filter the water column and metabolize food. Because of their amazing filtering capacity (around 170 L per day!), they have the power to transform and recycle carbon and nutrients with profound impacts on water quality and sediment characteristics, with implications for coastal biogeochemistry. I am specifically interested in the influence of oysters on biogeochemical cycling of nitrogen, silica, and greenhouse gases. In my research, I have recorded how different oyster habits and the length of time oyster aquaculture gear has been in place influences these cycles. I hope that my work can be used to better understand the important role oysters play in coastal systems, and potential impacts of restoring oyster populations.”
Please join the BU Marine Program for our annual Lang Lecture. This year, Stephen Palumbi will be speaking on climate change adaptations among marine organisms.
“Climate change adaptations of wild populations from corals to fish: the power of deep genomics”
April 19, 6:00 PM
BU Law Auditorium, 765 Commonwealth Ave.
Can’t make it to the talk? See the livestream here.
Steve Palumbi is the Director of Stanford University’s Hopkins Marine Station, Professor in Marine Sciences and Senior Fellow at theStanford Woods Institute for the Environment. Steve has long been fascinated by how quickly the world around us changes. Work on the genomics of marine organisms tries to focus on basic evolutionary questions but also on practical solutions to questions about how to preserve and protect the diverse life in the sea. Steve has lectured extensively on human-induced evolutionary change, has used genetic detective work to identify whales, seahorses, rockfish and sharks for sale in retail markets, and is developing genomic methods to help find ocean species resistant to climate change. Work on corals in American Samoa has identified populations more resilient to heat stress. Work at the Hopkins Marine Station focuses on how sea urchins, abalone and mussels respond to short term environmental changes and to environmental shifts over small spatial scales.
Acropora White Syndrome Outbreaks in the North Coast of Java Sea, Indonesia
Speaker: Prof. Dr. Ir. Agus Sabdono
Sabdono, A.1,2 , Ambariyanto1,2, M. Helmi2 and A. Wirasatriya2
1) Marine Science Department, FFMS, Diponegoro University, Indonesia
2) Center For Coastal Disaster Mitigation and Rehabilitation Studies (CoReM), Diponegoro University
This special seminar will be held in CAS 132 at 3pm
Coral reefs are experiencing a recent period of severe decline due to emerging coral diseases. Acropora White Syndrome (AWS) has been reported worldwide with increasing dramatically in the number of host species and geographic ranges. However, little is known about how AWS is caused. This disease is now recognized as one of the major causes of reef degradation and coral mortality in Indonesian waters. Several strategies have been attempted to stop spreading and progressing of coral diseases. However, those approaches were none have been tried with any success on a large spatial scale. Our primary objectives of this research were to investigate the prevalence, spatial distribution, and variability at temporal scales of AWS in polluted and unpolluted areas; to isolate, characterize and identify the bacteria associated with AWS and healthy corals; to investigate the causative agents of AWS coral diseases; to screen anti-pathogenic property of bacterial healthy coral symbionts against the causative agents of AWS and to develop pellets of anti-pathogenic AWS bacterial consortia.
To achieve these objectives, integrated methods of survey, explorative, laboratory and field experiments in the field major of oceanology, pathology, marine microbiology, marine biotechnology and ecology were used. This study was started by conducting surveillances, coral sampling, and underwater documentation, oceanographic measurements, isolation and purification of bacteria associated with diseased and healthy corals, postulate Koch’s experiments in the laboratory and fields, screening of anti-bacterial symbionts against coral pathogenic strains via soft agar overlay and agar diffused method. The experiment was finished by conducting polyphasic identification. The developing pellets of anti-pathogenic bacterial consortia are still ongoing study. The results of the research are expected to be used as ‘embryonic’ marine industry for ‘biocontrol agents’ pellets on a large scale in the future regarding enhancing management, conservation, and protection of coral reef ecosystems.
Dr. Randi Rotjan, in collaboration with Koty Sharp from Roger Williams University, Juanita Urban-Rich from the University of Massachusetts Boston, Carolina Bastidas from MIT Sea Grant and Sean Grace from Southern Connecticut State University, have been studying Northern Star Coral to determine the extent and impact of microplastics in an urban marine environment.
We are pleased to announce the 1st Annual BUMP Honors Thesis Symposium. The symposium will showcase undergraduate research in marine science conducted by eight BUMP seniors.
Please join us this Friday, May 3, 12:00 – 2:30 in BRB113 to celebrate their hard work and dedication over the last 12 months.
The New England Aquarium , a BUMP Academic Partner, Member’s Magazine “Tracking the Pulse of a Caribbean Coral Reef“ article features BUMP faculty member Dr. Randi Rotjan. Randi is a wonderful role model for many of our students and a great asset to our program.
What is it like to be a BUMP student? Find out by reading Diana’s story: http://blogs.bu.edu/bump/
Congratulations to Sara Edquist (CAS’08) and Caitlyn Genovese (CAS’08). Sara and Caitlyn, along with BUMP Director John Finnerty and several other authors, had a paper accepted for publication in the Marine Ecology Progress Series. The study arose out of student projects in Prof. Finnerty’s Marine Invertebrates course (BI547). Sara is currently a PhD student at the University of New Hampshire focusing on marine parasitology and aquaculture. Caitlyn is a PhD student at Clemson University studying ecology and evolutionary biology.
Physiological and developmental responses to temperature by the estuarine sea anemone Nematostella vectensis: evidence for local adaptation to high temperatures
Adam M. Reitzel1,2,3^, Tim Chu1, Sara Edquist1,2, Caitlyn Genovese1,2, Caitlin Church3, Ann M. Tarrant3, and John R. Finnerty1,2*
1Department of Biology and 2Boston University Marine Program, Boston University, 5 Cummington St., Boston, MA 02215
3 Biology Department, Woods Hole Oceanographic Institution, 45 Water St., Woods Hole, MA 02543