REUs Gone Wild: A Weekend in Woods Hole

Friday afternoon, and five marsh-logged REUs eagerly stuffed clothes into bags, piled into cars and headed south. After a long week, we were more than ready for time off. Three hours later, after driving like salmon through Boston traffic, we arrived at the Cape and hit the town for some shopping and seafood. Our rag-tag group was prepping for what promised to be a wild weekend. But by wild, I mean there were a lot of people. And by people I mean scientists. And by scientists, I mean the speakers and attendees for the Celebrating Discovery conference at the Marine Biological Laboratory of Woods Hole.

“A Summer Camp for Scientists”

Woods Hole, MA has an international reputation as the hub for marine science research. Along a half-kilometer long road, the Marine Biological Laboratory (MBL), Woods Hole Oceanographic Institute (WHOI), and the National Oceanic and Atmospheric Administration (NOAA) all have prestigious research facilities. A mere five minute walk and I could have caught flies – my jaw dropped, and never have I felt like such a kid in a candy shop. Within the greater Woods Hole area, the United States Geological Survey, the National Academy of Sciences, and Semester at Sea also have facilities.

The coastline is peppered with hulking research vessels, docked for the summertime. Quaint coffee shops and restaurants attract tourists and scientists alike, where it is not uncommon to overhear sincere discussions about the future of bioinformatics. I was thrilled to be in an area associated with such prestige and history (MBL has produced over 50 Nobel laureates), and even more awe-struck that I somehow fit into the giant cog of this machine.

WHOI's Knorr. Fun fact--it's the ship that found the wreck of the Titanic

WHOI’s Knorr. Fun fact–it’s the ship that found the wreck of the Titanic

The Celebrating Discovery conference took the form of “plenary sessions”, meaning a series of speakers would give talks within the same general topic. Speakers from UC Berkeley, WHOI, Harvard, Duke University, Brown, Dartmouth, the Amazon Environmental Research Institute, Argonne Laboratories, the Smithsonian, Howard Hughes Medical Institute and more, presented on everything from eco-evolutionary biology to computational modelling and medical breakthroughs in tissue regeneration. MBL is officially affiliated with Brown University and the University of Chicago, and collaborates with other universities and laboratories across the world. By simply walking into the auditorium for a lecture, you felt smarter. Some of the most brilliant minds in the marine sciences were in the room. While the weekend may not have been “wild” by Cape Cod’s standards, it was an intellectually stimulating and highly social event.

Scientists are often portrayed as socially awkward, brooding, and plain weird; in the digital age of professional-networking platforms (e.g LinkedIn and ResearchGate) and email-related frenzy, it would be more than easy for scientists to entirely block out physical connection with the outside world. Publications are the primary way that the scientific community connects with one another. Yet, it is during conferences that we make the most interdisciplinary connections. Conferences provide dedicated venues and forums for scientists of all specialties to meet and learn from one another. The standing joke is that MBL is a summer camp for scientists, as we much prefer sitting on beaches in deep conversation than locked away in a cold dark basement lab. (Beach time was existent but unfortunately minimal). By the end of the weekend, each of us had further honed our interests and met someone who was driving scientific inquiry in their field. It opened our eyes to the deeply collaborative nature of the MBL, and showed that despite the name, MBL does not restrict its limitless ideas to the seas.

Selfie in between plenary sessions.

Selfie in between plenary sessions. “It’s for the blog”

MBL’s remarkable collaboration with numerous institutions is further highlighted in its equal success in communicating its research. While conferences are wonderful places for scientists to share new ideas, it is meaningless unless conveyed to policy-makers, medical experts, and the general public. As one example, MBL sponsors Friday evening lectures throughout the summer that draw crowds to fill two auditoriums, with internationally known speakers. The lecture is followed by a beautiful reception, where people of all backgrounds can mingle. Local outreach is equally as important; non-scientific residents can appreciate the importance of those hulking research vessels that block their view of the ocean. Our own blog gives the TIDE project a digital presence to communicate to public the imperative nature of our own work, and even attract future researchers. (It also provides excellent writing practice for the interns – that’s me!)

When communication of new ideas and questions is effective, it can change the people’s perception of environmental problems. Communication comes in a plethora of forms, from books that start a green revolution, to 140 character tweets. We cannot keep our ideas to ourselves; science is worth nothing if no one else knows. MBL’s weekend of discovery was about asking relevant scientific questions to reach novel intellectual destinations and foster a diverse intellectual community. The depth and breadth of researchers that are attracted to Woods Hole is already staggering, but the MBL is pushing the frontier of discovery.

If ideas are truly the currency of the 21st century, then these giddy summer-campers struck gold.

We made it to the beach! (From left to right: Frankie Leech, Bryn Mawr; Nathalie Moore, College of William and Mary; Kassandra Baron, Washington and Jefferson; Caitlin Bauer, Bryn Mawr)

We made it to the beach! (From left to right: Frankie Leech, Bryn Mawr; Nathalie Moore, College of William and Mary; Kassandra Baron, Washington and Jefferson; Caitlin Bauer, Bryn Mawr)

Nathalie Moore is a rising junior at the College of William and Mary. She is a double major in Biology and Environmental Science, and her summer research for the MBL focuses on salt marsh creek bank degradation and foraging success of a top predator, F. heteroclitus. She will be presenting her work on Austral invasion and fire ecology at the 100th Meeting of the Ecological Society of America in Baltimore, MD on August 13th.


Melampus Madness

Kass lab Melampus

Kass installs her mesocosm testing the effects of Melampus snails on cordgrass decomposition

Time is flying by and we are already halfway through the field season! I am Kassandra Baron and I am an undergraduate student from Washington & Jefferson College studying Biology. Here at the Marshview field station I work as a research undergraduate student. This summer I am working on the TIDE project as well as carrying out several experiments with an invertebrate commonly found on the high marsh, Melampus.

Coffee bean snail

Melampus bidentatus, the coffee bean snail

Melampus bidentatus, commonly known as the Coffee Bean snail, is a terrestrial air-breathing snail in the family Ellobiidae. This species is relatively small, averaging 9 to 12 mm when fully grown. As a detritivore located on the high marsh, Melampus commonly feeds on Spartina patens and the algae that grows on the stems of these plants. The majority of my project is researching the effects of Melampus density on Spartina patens litter processing. While exploring density effect, I am also pursuing the question on whether or not there is a fertilizer effect. In both of my experiments we are using dead Spartina patens from Sweeney and West creeks and Melampus. Sweeney creek serves as our enriched creek and West creek is used as our reference. By using these two different creeks, we can compare the effect of Melampus on mass loss.

Caging a pre-weighed amount of dead cordgrass and a particular number of snails will help reveal how coffee bean snails contribute to detritus decomposition in the marsh

Caging a pre-weighed amount of dead cordgrass and a particular number of snails will help reveal how coffee bean snails contribute to cyclical plant decomposition in the marsh

To better understand whether or not Melampus increases the decomposition rate of Spartina litter that has been nutrient enriched, two experiments were set up. One experiment takes into consideration natural environmental factors and Melampus in its natural habitat. In this experiment, I used decomposition bags made of window screen and placed a known amount of dead Spartina patens and different densities of snails in each bag. These bags were then deployed out in the field at both creeks each containing litter from that creek. For the second experiment, I set up petri dishes. Half of these dishes contained litter from Sweeney creek and the other half West. Each dish had a known mass of detritus and a random density, or number, of Melampus individuals.

At the end of the field season, roughly 8 weeks from now, I will be measuring the mass loss, nitrogen content, phenolic content, particle size, and snail growth for both experiments. All together I hope to gain a better understanding of the importance of this snail on decomposition and determine if nitrogen enrichment and density play a role in the process of decomposition.

My REU project and the joy of being able to do science in my hometown

My name is Drew Collins, and I’m a rising junior at the University of New England studying Marine Biology. I’m one of the REU (Research Experience for Undergraduates) Interns working out of the Marshview Farm field station on the TIDE project.

As part of the REU program, interns must plan, orchestrate, and present the findings of a scientific study of their choosing (all within ten weeks!). We are not alone in this process however, as we have an incredible network of scientists working out of Marshview. The TIDE PIs (Principal Investigators, lead researchers) have been invaluable, giving us an endless stream of knowledge and advice they have gained through their many research projects and scientific endeavors. I know this advice will continue to help and guide me long after this summer is over. The RAs (research assistants) provide both advice and lend a hand with the lab work and fieldwork these projects require. In addition, all the REUs help each other, surveying creeks, gathering and counting snails, measuring gr ass clippings, and labeling everything.

Nathalie creek bank

Nathalie taking geomorphic measurements on one study creek such as point vegetation cover, bank crack widths, and creek depth.

My project is a joint project with Nathalie Moore. Together we are studying how the changing landscape of the marsh creeks is affecting mummichogs’ (a species of small fish that lives in the marsh) access to their invertebrate prey in the upper marsh. In order to get a large sample size of creeks, Nathalie and I have had to travel all over the Rowley and Ipswich salt marshes, exploring creeks not often visited. Once we had chosen and surveyed our creeks, we now must take measurements on the fish and the invertebrates at each creek, so we can see what kind of relationship there is between the landscape of the creek, the types and quantity of invertebrates, and the size, mass and behavior of the mummichogs living there.

Nathalie at Metcalf creek

Nathalie uses an old downed telephone pole to cross a ‘mosquito ditch’ while working at Metcalf creek

This internship has been a really exciting opportunity for me specifically, because the areas we study are practically in my backyard. I live just 10 minutes from Marshview, and I grew up here on the Great Marsh. To be able to do real science on these salt marshes, which have always held a special place in my heart has been a truly magical experience.

Two undergraduate botanists kick off the field season with Spartina measurements

Hello TIDE enthusiasts! We, Caitlin and Frankie, are excited to be writing the first blog post of the field season. We are rising seniors at Bryn Mawr College. While Caitlin is a seasoned marsh expeditionist returning for her third summer, Frankie is excited to start her first summer here at TIDE. The marsh has been treating us well these first few weeks, and has welcomed us with a mixture of cold/rainy and hot/sunny days.

REUs' first day

Not even cold and rainy weather can keep the REUs away from tank fills at Sweeney Creek

This summer, we will both continue to work with the plants that inhabit the Plum Island Marsh here at TIDE. Our focus is to compare the phenology of Tall Form Spartina alterniflora (TSA) to genetic analysis conducted last year. We will continue to take clip plots of the five main marsh plants, TSA, Short Form Spartina alterniflora (SSA), Distichlis spicata (DS), and Spartina patens (SP) in order to determine changes in plant morphology and density between the fertilized and unfertilized creeks. We will also measure gas fluxes, including methane, CO2 and water vapor, to investigate differences in plant physiology across the long term fertilized Sweeney Creek and the unfertilized West Creek.

During our short time here, we have also had the opportunity to assist with other projects, as well as attend and present a poster at the New England Botanical Society’s 120th anniversary conference. We had a great time there and were excited to be able to visit another one of the Seven Sister’s, Smith College, who hosted the conference. We look forward to collaborate with the other REUs and further develop our understanding of essential marsh systems. Flume Netting is the next big project coming up this week, and we have begun to move the nets to more appropriate locations on the marsh.

Caitlin and Frankie measuring tall form Spartina alterniflora

Caitlin and Frankie measure TSA in their flux collars at Sweeney Creek. Height measurements will be taken twice each month in all of the collars at both Sweeney and West.

Flux collar set up

Setting up the light flux chambers for measurement at Sweeney Creek

Salt marshes as unsung heroes

Clubhead creek, photo credit:  Sarah Wilkins

Clubhead creek, photo credit: Sarah Wilkins

Marshes are quiet, unassuming ecosystems that do a lot for us. They provide protection from storms, they produce animals that we like to eat or watch, and they give us wonderful places to look out upon while watching the sunrise (or set on the West Coast). WCAI, the Cape and Islands NPR station, highlighted salt marshes last week in their Living Lab segment. Linda Deegan, the lead Principal Investigator was a part of the discussion. If you want to learn about salt marshes, this is a good place to start so give a listen.

The TIDE does not ebb

An intern leaps for joy on the TIDE Project. Photo: DS Johnson

An intern leaps for joy on the TIDE Project. Photo: DS Johnson

It’s official: The TIDE Project has been re-funded by the National Science Foundation until 2016.

The TIDE Project will continue its fertilization experiments to look at the effect of chronic nutrient enrichment of salt marshes. We will focus on our most compelling finding to date: nutrients can lead to marsh loss. This result is compelling because while scientists have identified a number of causes of marsh loss, nutrients had never been identified until now. In that vein, we will focus on three major questions going forward:

The author contemplates, what's causing the marsh to fall apart? What will it look like in the future? How will that affect marsh benefits to humans?

The author contemplates, what’s causing the marsh to fall apart? What will it look like in the future? How will that affect marsh benefits to humans? Photo: Konner Lockfield

1) What are the biological mechanisms leading to marsh loss?
We hypothesize that changes in microbial activity (leading to increased decomposition) and reductions in root biomass have led to less cohesive creek banks, thus making them susceptible to physical forces and slumping. We will test our biological hypotheses to understand how nutrients can lead to marsh loss.

2) How does marsh loss affect ecosystem services?
All ecosystems provide benefits to humans and those benefits are called ‘ecosystem services’ by scientists. Two services provided by marshes include fisheries support and pollution control (i.e., nutrient removal). We will test the hypothesis that marsh loss reduces marsh ecosystem services by reducing the ability of the marsh to produce forage fish (the mummichog Fundulus heteroclitus) and to remove nutrients. 

3) What is the eventual shape of the marsh with chronic nutrient enrichment?
What we have seen in the short-term is marsh loss that has led to sharp scarps (walls) which can affect a number of marsh functions (and in turn marsh services). It is unknown, however, if the marsh edge will continue to erode or stabilize in a different configuration (say, a low sloping edge). We will monitor changes in the geomorphology of the tidal creeks to predict the trajectory of these changes. 

Collectively, the TIDE Project will answer interesting scientific questions while simultaneously addressing the critically important issue of the loss of marshes and the benefits they provide to humans (storm protection, pollution control, fisheries production, beauty).

The TIDE Project is led by Dr. Linda Deegan of the Marine Biological Laboratory (MBL). The team includes Dr. Sergio Fagherazzi (Boston University), Dr. Jen Bowen (UMASS-Boston), Dr. Tom Mozdzer (Bryn Mawr), Dr. Bruce Peterson (MBL), Dr. Anne Giblin (MBL), Dr. Jimmy Nelson (MBL) and Dr. David Johnson (MBL).

Like the salt marsh itself, the TIDE Project has been productive hosting almost 150 scientists, 70% of which have been young scientists, publishing over 40 scientific articles, and contributing to numerous outreach activities. We look forward to another set of productive years. 

Thank you to the readers for all of your support. To learn more about the TIDE Project, go to our project site:

David Samuel Johnson is a scientist at the Marine Biological Laboratory and loves spineless animals.

TIDE Scientists inducted into AAAS – Part II

From L to R: Jane Tucker, Anne Giblin, and Sam Kelsey

From L to R: Jane Tucker, Anne Giblin, and Sam Kelsey

Anne’s recent election into AAAS is well-deserved, and if there were a companion award for outstanding achievements in kindness, generosity, and commitment to others, she would rightfully be awarded that, too.   I have had the privilege of working closely with Anne for over 20 years, and I should know.

Anne Giblin “speaks “ biogeochemistry, thermodynamics, biology, physical chemistry… really all the “hard” sciences…as a first language.  They seem to be part of her innate intelligence.     But she is not a desk scientist.   She loves to be in the lab, or even better, out in the field conducting experiments or collecting samples.   Adverse field conditions are her forte!    She is not stopped by freezing temperatures or clouds of mosquitoes on the North Slope of Alaska, nor by tropical heat, “no-see-ums” or scorpion stings in Panama.   She does not let little things like utter darkness in the cold depths  of Adirondack  lakes  or a blanket of sewage sludge on the bottom of Boston Harbor dampen her enthusiasm for collecting more mud and adding dives to her SCUBA log.   She does not send her students or employees out to do this work for her….she jumps in first.   All of this to keep adding pieces to the puzzle of element cycling in sediments, particularly with respect to nitrogen, carbon, and her first love, sulfur.  

Hard work is often matched by good cheer. A long day with the PIE-LTER team in the marsh at Plum Island, in itself fun, is routinely followed by a good meal (often prepared by Anne),   a good local brew (often provided by Anne), and good stories (often told by Anne).   Over the years, these days and stories and Anne’s optimism have become encapsulated by some memorable lines, now used affectionately by the team.  Three of the classics are:  “Done by noon!” (as in, “It won’t take long, we’ll be ….”), “That’s not thunder, those are jets!” (at next occurrence, accompanied by a bright flash of light) , and “No herics!” (i.e. heroics… I mentioned Anne’s first language is science, not English, didn’t I? It’s really the only thing I can help her with!).  

Sure, Anne has the necessary stats on her CV that attest to her accomplishments as a scientist.  But the best testament of her success may be that, in an increasingly difficult funding climate, and at an all soft-money, independent research laboratory, Anne has kept herself and her team funded for over 25 years.  It is tribute to Anne as a mentor, colleague, and friend, that we have all wanted to stay.

Jane Tucker is a Research Assistant at the Marine Biological Laboratory.