Tag: George Mason

Micropollutants in the Potomac

Led by principal investigators Amy Fowler and Kim de Mutsert, the Summer Team Project looked at the effects of micropollutants on the Potomac River watershed. Projects were funded by the Students as Scholars at Mason as well as the Patriot Green Fund, and the videos were produced by graduate student, Chelsea Gray, thanks to the Virginia Sea Grant.

*The programs and services offered by George Mason University are open to all who seek them. George Mason does not discriminate on the basis of race, color, religion, ethnic national origin (including shared ancestry and/or ethnic characteristics), sex, disability, military status (including veteran status), sexual orientation, gender identity, gender expression, age, marital status, pregnancy status, genetic information, or any other characteristic protected by law. After an initial review of its policies and practices, the university affirms its commitment to meet all federal mandates as articulated in federal law, as well as recent executive orders and federal agency directives.

Macroinvertebrates and Micropollutants

OSCAR student Michael Rollins talks about his summer 2017 research. Led by principal investigators Amy Fowler and Kim de Mutsert, the Summer Team Project looked at the effects of micropollutants on the Potomac River watershed. Projects were funded by the Students as Scholars at Mason as well as the Patriot Green Fund, and the videos were produced by graduate student, Chelsea Gray, thanks to the Virginia Sea Grant.

*The programs and services offered by George Mason University are open to all who seek them. George Mason does not discriminate on the basis of race, color, religion, ethnic national origin (including shared ancestry and/or ethnic characteristics), sex, disability, military status (including veteran status), sexual orientation, gender identity, gender expression, age, marital status, pregnancy status, genetic information, or any other characteristic protected by law. After an initial review of its policies and practices, the university affirms its commitment to meet all federal mandates as articulated in federal law, as well as recent executive orders and federal agency directives.

Are We Effecting Fishes’ Hormones?

R. Christian Jones, director of Mason's Potomac Environmental Research & Education Center (PEREC), has received a grant of $167,481 from Alexandria Renew Enterprises, a water resource recovery utility that works to improve local water quality. Jones and his co-PI’s have been tasked with studying water quality and aquatic biota and how they relate to discharges into the Potomac River. Jones is working with a number of graduate and undergraduate students as well as PEREC colleagues on the project, and they are looking at issues including excessive algae and aquatic plant growth and bacteria from sewer overflows. To do that, the researchers are collecting samples of water, sediments and animals in tidal areas of the Potomac and its tributaries. This study builds on previous work for this sponsor which began in 2013. Photo by Evan Cantwell/Creative Services/George Mason University

Written by: Michael Cagle

As a Master’s student, I am looking into the presence of endocrine disruptors in the Potomac River. The endocrine system regulates virtually every activity in animals through the use of chemical compounds called hormones, and plays a vital role in the reproductive system. Specifically, I am looking at compounds that interfere with the normal functioning of the reproductive system by mimicking or disrupting the naturally occurring hormones testosterone and estrogen.

*The programs and services offered by George Mason University are open to all who seek them. George Mason does not discriminate on the basis of race, color, religion, ethnic national origin (including shared ancestry and/or ethnic characteristics), sex, disability, military status (including veteran status), sexual orientation, gender identity, gender expression, age, marital status, pregnancy status, genetic information, or any other characteristic protected by law. After an initial review of its policies and practices, the university affirms its commitment to meet all federal mandates as articulated in federal law, as well as recent executive orders and federal agency directives.

Taking the Pulse of a Stream

Written by: Chelsea Gray

How do you tell the health of a river? This is a question that scientist all over the world struggle to answer. A common method for determining stream health is the Stream Bioassessment.

Damselflies lay their eggs in the water. Damselfly nymphs live under the water and are an example of the type of benthic macro-invertebrate found in Virginia streams.

What is a “Stream Bioassment”?

Because you can’t ask a stream how it’s feeling, we use indirect measures of health for an ecosystem. One way we do this for a stream is by identifying what types of organisms live there. In particular, we look at benthic macro-invertebrates, or the bugs that live in the stream bed.

*The programs and services offered by George Mason University are open to all who seek them. George Mason does not discriminate on the basis of race, color, religion, ethnic national origin (including shared ancestry and/or ethnic characteristics), sex, disability, military status (including veteran status), sexual orientation, gender identity, gender expression, age, marital status, pregnancy status, genetic information, or any other characteristic protected by law. After an initial review of its policies and practices, the university affirms its commitment to meet all federal mandates as articulated in federal law, as well as recent executive orders and federal agency directives.

What’s at the Bottom of the Potomac River?

Laura Birsa pulls the ponar onto the boat

Written by: Chelsea Gray

Each year, researchers and graduate students from PEREC gather data on Gunston Cove, located just downriver from the Norman M. Cole Jr. Pollution Control Plant. This study has been used to determine the health of the Potomac River for over three decades.

How is a river’s health determined?

*The programs and services offered by George Mason University are open to all who seek them. George Mason does not discriminate on the basis of race, color, religion, ethnic national origin (including shared ancestry and/or ethnic characteristics), sex, disability, military status (including veteran status), sexual orientation, gender identity, gender expression, age, marital status, pregnancy status, genetic information, or any other characteristic protected by law. After an initial review of its policies and practices, the university affirms its commitment to meet all federal mandates as articulated in federal law, as well as recent executive orders and federal agency directives.

PEREC Faculty highlighted in Mason Spirit

Cindy Smith’s Human Dimensions and Biomes class (EVPP 302) was highlighted recently in Mason Spirit.

She found that some environmental science and biology majors were having difficulty finding jobs without a graduate degree. Looking for answers, she surveyed 10 employers and found that what they wanted most was were employees who had worked on “real” research projects and had “real” field experience. So she reworked the course to include an energy audit of a campus building, which is conducted in partnership with Mason’s Offices of Sustainability and Facilities….

“One of the best parts about my job is the interaction with the students during plant tours—and getting new ideas from them that we can possibly use to save energy,” says Jeffrey Counts, superintendent of the heating and cooling plant in Facilities Management.

Read the rest here.

*The programs and services offered by George Mason University are open to all who seek them. George Mason does not discriminate on the basis of race, color, religion, ethnic national origin (including shared ancestry and/or ethnic characteristics), sex, disability, military status (including veteran status), sexual orientation, gender identity, gender expression, age, marital status, pregnancy status, genetic information, or any other characteristic protected by law. After an initial review of its policies and practices, the university affirms its commitment to meet all federal mandates as articulated in federal law, as well as recent executive orders and federal agency directives.

Are Potomac River Fish Addicted to Drugs?

Written By: Heather Nortz

How many prescription or over the counter drugs are currently in your medicine cabinet? Did you know that your body doesn’t absorb 100% of the drugs you take? What do you do with your expired or unused drugs? Do you think wastewater treatment or drinking water plants remove pharmaceuticals from water before they release it into the environment or to your well or water tower?

*The programs and services offered by George Mason University are open to all who seek them. George Mason does not discriminate on the basis of race, color, religion, ethnic national origin (including shared ancestry and/or ethnic characteristics), sex, disability, military status (including veteran status), sexual orientation, gender identity, gender expression, age, marital status, pregnancy status, genetic information, or any other characteristic protected by law. After an initial review of its policies and practices, the university affirms its commitment to meet all federal mandates as articulated in federal law, as well as recent executive orders and federal agency directives.

One Fish, Two Fish, Prozac in the Blue Fish

R. Christian Jones, director of Mason's Potomac Environmental Research & Education Center (PEREC), has received a grant of $167,481 from Alexandria Renew Enterprises, a water resource recovery utility that works to improve local water quality. Jones and his co-PIs have been tasked with studying water quality and aquatic biota and how they relate to discharges into the Potomac River. Jones is working with a number of graduate and undergraduate students as well as PEREC colleagues on the project, and they are looking at issues including excessive algae and aquatic plant growth and bacteria from sewer overflows. To do that, the researchers are collecting samples of water, sediments and animals in tidal areas of the Potomac and its tributaries. This study builds on previous work for this sponsor which began in 2013. Photo by Evan Cantwell/Creative Services/George Mason University

By: Lisa McAnulty

I once heard someone say that if you brought a glass down to the Potomac River and took a long swig of its water, you would have swallowed a small dose of antidepressants. While drinking Potomac River water is highly discouraged, there may be a hint of truth to this statement. Thousands of pharmaceuticals and personal care products are on the market, and many inevitably make their way into rivers and streams through wastewater discharge or other sources. While we might not necessarily be chugging river water on a daily basis, many organisms call the Potomac River home and can’t escape the barrage of these so-called emerging contaminants. However, “emerging contaminants” is a misleading term for pharmaceuticals and personal care products, which have been in our waters for many years. It’s only recently that scientists developed methods sensitive enough to precisely measure trace quantities of these pollutants.

*The programs and services offered by George Mason University are open to all who seek them. George Mason does not discriminate on the basis of race, color, religion, ethnic national origin (including shared ancestry and/or ethnic characteristics), sex, disability, military status (including veteran status), sexual orientation, gender identity, gender expression, age, marital status, pregnancy status, genetic information, or any other characteristic protected by law. After an initial review of its policies and practices, the university affirms its commitment to meet all federal mandates as articulated in federal law, as well as recent executive orders and federal agency directives.

Being an Ecologist

Written By: Michael Rollins; Photo Credit: Sammie Alexander

Figure 1. Mason Senior Michael Rollins slowly submerges his macroinvertebrate bottle trap with assistance of PEREC team member Heather Nortz in Gunston Cove, VA

You would never think that drinking 16 liters of soda would be key to being an ecologist. I didn’t either. As a George Mason University senior, finishing my degree in environmental science with a concentration in marine, estuarial, and freshwater ecology, I am participating in an OSCAR undergraduate summer research project.

*The programs and services offered by George Mason University are open to all who seek them. George Mason does not discriminate on the basis of race, color, religion, ethnic national origin (including shared ancestry and/or ethnic characteristics), sex, disability, military status (including veteran status), sexual orientation, gender identity, gender expression, age, marital status, pregnancy status, genetic information, or any other characteristic protected by law. After an initial review of its policies and practices, the university affirms its commitment to meet all federal mandates as articulated in federal law, as well as recent executive orders and federal agency directives.

Looking for Summer Research Opportunities?

Update: Applications are closed, and applicants are currently being considered. The project has received a further $12,000 from Patriot Green Fund.

PEREC faculty Amy Fowler and Kim de Mutsert are currently looking for dedicated undergraduates to participate in a one of a kind research experience. The paid, 10-week summer program will give students the unique experience of collaborating with experienced faculty in research and scientific communication.

What kind of research will students be doing?

Students will assess biological and chemical aspects of two Potomac locations, Hunting Creek and Gunston Cove. PEREC faculty has sampled both of these regions, but the OSCAR research study will be the first of its kind.

While each student will focus on one specific area of research, together each project will look at the effects of micropollutants, such as mercury, in the food web. Students will collect data on the population of invertebrates, fishes, and zooplankton in the river. This is considered a good indicator of overall ecosystem health, as “sensitive” organisms are less likely to be found when there are pollutants present. A high diversity of organisms is also indicative of a healthy ecosystem.

Students will also test the river bottom to see if there are any micropollutants present, and if so, how deep in the sediment? When compared to the biological data, students will be able to determine if there is a correlation between less pollution and more organism diversity.

Not only will students get to help design and implement a research project, they will also get to participate in community outreach. Students will get to hone their oral communication skills through two oral presentations, and will also get experience writing a scientific report.

Why is this research important?

Potomac Science CEnter — The brand new Potomac Science Center where students will conduct their research

Studies have demonstrated that micropollutants (substances which are toxic in small doses) can build up in the environment, whether that be the sediment, or through the food chain. Bioaccumulation is when animals higher up in the food change have higher amounts of micropollutants, due to the fact that they consume many small organisms (such as zooplankton) that have consumed pollutants.

While few people swim in the Potomac River or eat the fish from there, the Potomac is a Chesapeake Bay watershed. There is a strong change that micropollutants found in the Potomac can make their way to the Bay, where many people spend their summers fishing and swimming.

Not only will students demonstrate if micropollutants are present, the two different areas might help identify how much they are related to anthropogenic (human) inputs. A food web study, a watershed analysis, and a science communication component will complement the ecotoxicology research to better understand the source and fate of micropollutants in the Potomac River watershed.

How is it funded?

Dr. Fowler and Dr. De Mutsert have both successfully teamed up to earn two grants to fund student research.

From the Virginia Sea Grant, $5,000 were awarded to support student summer research. Dr. Fowler and Dr. De Mutsert have also won an impressive $38,000 from the OSCAR Summer Team Project Grant.

Dr. Fowler is especially excited for the summer, because she is a new faculty member, and can’t wait to meet new undergrads, who she hopes to mentor “as early as possible” in their academic career.

“Mentoring makes me a better teacher and a better scientist… I really enjoy helping students become better researcher, even if that’s not what they end up doing, you can always look at the world through the lens of a scientist, you can always question the world.”

Dr. De Mutsert is excited that the Potomac Science Center will immediately be used to its full potential:

“A summer research experience in aquatic science ideally takes place in an off-campus research facility right on the water. I am really excited we are able to offer that. We have an interdisciplinary team of scientists including geologists, chemists, ecologists, and science communication experts together in the same building that are involved in this project, and are mentoring the students. We can be on the water when we want to, and plan to be on a boat with the students at least once a week.”

Both agree that this summer experience will prepare students for a future as a scientist, as it will strengthen their communication skills in a way class labs are not able to. Scientists are always writing proposals, grants, and preparing lectures. This summer research experience will give them the skills and confidence to do these effectively.

What is the future of this program?

This pilot program will hopefully open the door for further research experience for undergraduates. While the 2017 summer program is currently only open to George Mason students, PEREC hopes to open up it up to undergraduates nation wide.

If this initial program is successful, it may open the door for funding from the National Science Foundation’s Research Experience for Undergraduates (https://www.nsf.gov/crssprgm/reu/). This will allow PEREC to accept undergraduates from all over the country for their research program. As the Potomac Science Center is the only center located on a Freshwater Tidal river, it would be a unique, and invaluable opportunity for any young scientist.

Interested students can apply here.

*The programs and services offered by George Mason University are open to all who seek them. George Mason does not discriminate on the basis of race, color, religion, ethnic national origin (including shared ancestry and/or ethnic characteristics), sex, disability, military status (including veteran status), sexual orientation, gender identity, gender expression, age, marital status, pregnancy status, genetic information, or any other characteristic protected by law. After an initial review of its policies and practices, the university affirms its commitment to meet all federal mandates as articulated in federal law, as well as recent executive orders and federal agency directives.