Greenversations

Each week we write about the science behind environmental protection. Previous Science Wednesdays.

About the author: Bill Fisher has worked with EPA’s Office of Research and Development for 18 years. His academic research included environmental studies of several marine invertebrates, including lobsters, crabs, squid and oysters. For the last five years he has worked to improve environmental protection of U.S. coral reefs.

This will be our third survey of coral reefs in the U.S. Virgin Islands (USVI). The first was in St. Croix where we verified that a new EPA bioassessment method could identify adverse effects of human activity on coral reefs. The next year we applied an Environmental Monitoring and Assessment Program (EMAP) ‘probability-survey’ method to determine the condition of reefs island-wide. And now, another year later, we will perform the same survey at St. Thomas and St. John.

It may seem a long time to complete a study, but coral reef research has many challenges—not the least of which is a suitable ship to work from. EPA has a well-equipped research ship, the Ocean Survey Vessel BOLD. She not only provides us berth and board, but has compressors to fill our SCUBA tanks and dive boats that we deploy to our sampling locations. The OSV BOLD is in great demand, so it is fortunate that we are able to work from her even once a year.

The survey itself is not complicated—especially if you were to run it on dry ground. The coral surveyor identifies each coral colony in a 25 square meter transect, measures their size and estimates the percent of live tissue. (Corals are clonal organisms, and colonies can suffer large losses of living tissue without dying). Under water, these observations are more difficult because the surveyor has to maneuver in currents and surge. What’s important is that these three basic underwater observations provide several indicators highly relevant to resource management.

We usually field three dive teams and each surveys two to three stations a day. All too often, it is too windy or there are high rollers (waves) that pose hazards getting in and out of small boats with dive gear. On these days we usually catch up entering data, checking gear and reading emails.

Our ultimate purpose in USVI is to assist in the development of coral reef biocriteria. These are water quality standards developed from indicators of coral condition. The first survey we ran told us that we could use the new bioassessment procedures, and the latter two will establish the baseline condition for coral reefs. USVI will use this baseline condition to establish expectations for reef health in the future.

About the author: Charles LoBue serves as the chief scientist and diver for the US Virgin Island leg of the OSV BOLD voyage. He is an environmental scientist in EPA Region 2 in New York City.

Feb. 23, 2009 - 3:00 pm (Day 15)

As the Puerto Rico leg of the OSV BOLD’s survey winds down, the U.S. Virgin Islands leg is beginning. We’re staffed, equipped and ready to begin a nearly three-week survey to assess the condition of coral reefs around St. Thomas and St. John. We’ve reassembled this experienced team of divers and scientists to resume the work that began in 2006. Back then, EPA worked with V.I. Department of Planning and Natural Resources (DPNR) in St. Croix to initiate an inventive new coral monitoring program developed by EPA’s Office of Research and Development. Our team will include divers from EPA, DPNR, U.S. Fish and Wildlife Service, and The Nature Conservancy.

The waters that we are working in this year are new to us, which adds an element of adventure. Our plan is to perform strategic observations and measurements of corals and other biota at 60 stations around the islands. Water and sediment sampling will add to the mix. Each morning, we will assign dive teams to three small boats, which will be dispatched to different observation stations.

Here’s the basic process once we’re in the water. When a dive team arrives at a station, a snorkel reconnaissance is performed to assess whether the site has suitable coral cover. The team then enters the water and lays a 25-meter transect line to mark the domain of the observations. The team then makes a general assessment of the cover types, measures topography, counts other invertebrate species, and collects sediment and water samples throughout the transect area. Coral experts will identify every hard coral colony encountered within a meter of the transect line, measure its dimensions, and judge how much of it is thriving.

When the team returns to the OSV BOLD, data are entered into a computer for analyses and water samples are processed. This will go on for the duration of the survey.

Sure it may seem to be a cookie-cutter process, but the best laid plans are always at the mercy of the weather and sea condition. Of course, underlying all this field work is the logistics and procedures needed to maintain to safe diving operations. Our challenge is to find and assess 60 suitable stations over some 50 some-odd miles of coast around the two islands and assorted cays. So here’s to blue skies, calm seas, and healthy coral.

About the Author:  Loreal Crumbley, a senior at George Mason University, is an intern with EPA’s Environmental Education Division through EPA’s Student Temporary Employment Program (STEP).

Many of you may be looking for effective green tips.  One tip I can offer you is to recycle used coffee grounds. Coffee mixed with soil can be used as a natural fertilizer. Used coffee grounds provide gardens with an abundant source of nutrition. Recycling coffee grounds is not only beneficial for gardeners but it helps in reducing the amount of waste going into landfills. When coffee grounds are dumped into landfills they create methane, which is a greenhouse gas. Methane is known to be more harmful than carbon dioxide, another greenhouse gas that causes global warming. If we are able to keep coffee grounds out of landfills we’ll be one step closer to eliminating greenhouse gas emissions.

Coffee grounds contain a high amount of nitrogen. When scattered across soil before rain or watering they will slowly release nitrogen into the soil. When compost is mixed with coffee grounds it causes the soil temperature to rise and stay hot for long periods of time. The high temperature kills weeds and will allow your garden to flourish beautifully. Coffee grounds are acidic, which benefits “acid loving” plants.  For instance roses, camellias, blueberries, and azaleas all flourish when sprinkled with coffee grounds.

Recycling coffee grounds also helps to feed worms, and keeps troublesome insects away. Earthworms love to feed on used coffee grounds; it helps them grow and reproduce. Having lots of worms is an excellent way to keep a healthy garden. It is important to have worm activity in your soil; this mixes the soil and helps in mineralizing your vegetation. As you all know the odor of coffee is very strong, the odor can sometimes be too strong for humans. In the case of insects like ants, slugs, and snails the odor works as a repellant.

There are many places you can find used coffee grounds. Some good suggestions include local coffee shops, gas stations, schools, or your workplace. You could ask coffee vendors to save coffee grounds for you, and coordinate a time to stop by and pick up your “green fertilizer.”

Other uses for coffee grounds:

1. Can be used to dye paper or clothes
2. Can retouch furniture
3. Can be used as flea repellant, rub on pets (dog, etc.)
4. Can repel odors around the home
5. Can be used when cleaning grease

Learn more about recycling used coffee grounds, and remember recycling is one way we can keep our environment natural and beautiful!

About the author: Brenda Reyes Tomassini joined EPA in 2002. She is a public affairs specialist in the San Juan, Puerto Rico office and also handles community relations for the Caribbean Environmental Protection Division.

February 20, 2009 - 8:20 am (Day 12)

In a previous blog titled “52 Ways to Save the Environment, Part II”, I suggested teachers and educators to take their lesson outside of the classroom to put their students in direct contact with nature. Yesterday, around 550 people, including nearly 30 teachers and many students, from the western side of the island came to have a science lesson outside of the classroom during EPA’s Open Ship event in Mayaguez, Puerto Rico.

Students learned about the ship’s layout and latest technology, and had the opportunity to ask scientists, EPA personnel from the San Juan Office, and University of Puerto Rico professor’s questions. All of us gladly shared our knowledge and experiences and spoke about life aboard the Bold, as well as many of our every day duties as environmental protection professionals.

I wish I had had the opportunity when I was growing up that these students were given yesterday. Science is fascinating even when taught from a book, but it really comes alive when you can see it in action. In most environmental science careers, people get to bring together science and creativity to work towards a greater good, protecting ecosystems and people’s health.

I hope that many of the students that participated in the Open Ship yesterday get a new perspective on science and with our shared experiences pursue a career in the environmental protection field.

Each week we ask a question related to the environment. Please let us know your thoughts as comments. Feel free to respond to earlier comments or post new ideas. Previous questions.

Communities grow to meet demand for homes, schools, shopping, offices, roads, and everything else. But community growth can affect the environment due to increases in traffic, energy and utilities, waste, and more.

How has your community used smart growth for environment-friendly development?

En español: Cada semana hacemos una pregunta relacionada al medio ambiente. Por favor comparta con nosotros sus pensamientos y comentarios. Siéntase en libertad de responder a comentarios anteriores o plantear nuevas ideas. Preguntas previas.

Las comunidades crecen para cumplir con las demandas de hogares, escuelas, centros comerciales, oficinals, carreteras y todo lo demás.  Sin embargo, el crecimiento comunitario puede afectar el medio ambiente debido a aumentos en el tráfico, energía y servicios públicos, desechos y más.

¿Su comunidad ha usado el crecimiento inteligente para un desarrollo beneficioso para el medio ambiente?

About the author: Doug Pabst is the chief scientist for the OSV BOLD’s Puerto Rico voyage. He leads the dredging, sediments and oceans team in EPA Region 2, comprising New Jersey, New York, Puerto Rico and the U.S. Virgin Islands.

Feb. 17, 2009 – 8:00 pm (Day 9)

We left Ponce at 6 a.m. and conducted more bongo net tows several miles offshore of Guayanilla, Puerto Rico. After the tows we proceeded west towards La Parguera to conduct sediment sampling operations.

La Parguera is a small fishing village in the town of Lajas on the southwest coast of Puerto Rico. The waters off La Parguera consist of small coral encrusted islands topped with mangroves. It is also home to Phosphorescent Bay, where at night the water will glow brilliantly when disturbed. This is caused by a small organism (a dinoflagellate) that lives in abundance in the area and glows when subjected to movement, similar to a firefly. This place is like paradise, with its natural beauty and picturesque tropical settings. I can see why some license plates here bear the slogan “Island of Enchantment”

We decided to anchor the OSV BOLD and use our smaller rigid hull inflatable boats (RHIBS) to conduct the sediment sampling. The OSV BOLD will serve as our platform to process and store the sediment samples. We dropped anchor at approximately 1 p.m.

We broke up into three teams. Two teams sampled in the RHIBS and one team stayed on board the OSV BOLD to process the sediment samples collected by the other teams. We will analyze the sediment samples of sand, silt and clay for grain size, total organic carbon (TOC), and benthic community analyses (organisms that live at the bottom of the ocean). The grain size and TOC samples are placed into a refrigerator and will be shipped to our lab for analysis. The benthic community samples are placed into a sieve, small round pan with a 0.02 inch (0.5 mm) screen on the bottom. 

The remaining material is gently scooped into a plastic container. The contents are preserved and stained, which allows for easier identification of any organisms. We then wrap electrical tape around the lids to further prevent leakage of the preservative. Our results will be utilized to help better protect and preserve the coral reefs and their associated ecosystems.

We ended the day with additional bongo net tows for marine debris off of Cabo Rojo. We’re schedule to do more bongo net tows at 6 a.m. and arrive at Mayaguez around noon. We will be in Mayaguez the rest of the day on the 18th and open to the public for tours from 8:30 a.m. until 4:30 p.m. on the 19th.

About the author: Lina Younes has been working for EPA since 2002 and chairs EPA’s Multilingual Communications Task Force. Prior to joining EPA, she was the Washington bureau chief for two Puerto Rican newspapers and she has worked for several government agencies.

As I’ve mentioned before, my weekend agenda is pretty much controlled by the activities that my youngest has scheduled. Recently, she was invited to a friend’s birthday party in Pasadena, MD. The home where they were having the party was about 45 minutes from our house. I had never been to the area and it wasn’t until we got there that we discovered the house was right on the Chesapeake Bay! There was a beautiful view of the majestic Chesapeake, the largest estuary in the nation, right at our footsteps.

I started speaking with the mom and she told me how they had recently moved into their new home. She also mentioned that she was looking forward to the spring to start gardening and planting new flowers and trees in her yard. I recommended that she plant native shrubs and trees which would help protect the Bay. Native plants reduce the need to use pesticides and fertilizers. Letting these shrubs grow densely along the waterway prevents non-point source pollution and erosion. Greenscaping techniques are beneficial anywhere you live and near a watershed these techniques have an added value.

There are several simple steps you can take at home to prevent non-point source pollution from harming such a national treasure or any watershed for that matter. As we get closer to Earth Day, we can start to think of ways to encourage our children and communities to get involved in environmental protection. The protection of our waterways is a good place to start. With spring just around the corner, there are many green activities which the entire family will enjoy.

Sobre la autor: Lina M. F. Younes ha trabajado en la EPA desde el 2002 y está a cargo del Grupo de Trabajo sobre Comunicaciones Multilingües. Como periodista, dirigió la oficina en Washington de dos periódicos puertorriqueños y ha laborado en varias agencias gubernamentales.

Como he mencionado en el pasado, la agenda de mis fines de semana está controlada mayormente por las actividades que mi hija menor tiene programadas. Recientemente, tenía una invitación para un cumpleaños de una amiguita en Pasadena, MD. La casa donde se celebraba la fiesta estaba a 45 minutos de nuestro hogar. ¡No fue hasta que llegamos que descubrimos que la casa estaba justo en la ribera de la Bahía del Chesapeake! Una hermosa vista del majestuoso Chesapeake, el estuario más grande de la nación, estaba literalmente a sus pies.

Empecé hablar con la mamá de la amiguita y me contó que se habían mudado recientemente a su nueva casa. También mencionó que estaba esperando con interés la llegada de la primavera para dedicarse a la jardinería y sembrar su jardín. Le recomendé que sembrara arbustos y árboles nativos que ayudarían a proteger la Bahía. Cabe señalar que el sembrar plantas nativas reduce la necesidad de tener que utilizar pesticidas y fertilizantes. El dejar que los arbustos crezcan densamente a lo largo de una vía acuática evita la contaminación de escorrentías y la erosión. Mientras que las técnicas de jardinería ecológica son beneficiosas en cualquier lugar, en las proximidades de una cuenca fluvial tienen un valor añadido.

Hay muchas maneras de tomar pasos sencillos en el hogar para evitar que la contaminación de fuentes difusas perjudique este tesoro nacional o cualquier cuenca. A medida que se acerca el Día del Planeta Tierra, debemos empezar a pensar en maneras en las cuales podemos lograr que nuestros hijos y comunidades participen en la protección ambiental. La protección de nuestras vías acuáticas es una buena manera de comenzar. Con la primavera al doblar de la esquina, hay muchas actividades verdes para toda la familia.

Each week we write about the science behind environmental protection. Previous Science Wednesdays.

About the author: Doug Pabst is the chief scientist for the OSV BOLD’s Puerto Rico voyage. He leads the dredging, sediments and oceans team in EPA Region 2, comprising New Jersey, New York, Puerto Rico and the U.S. Virgin Islands

Gone Fishin’

Feb. 13, 2009 – 8:00 pm (Day 5)

The crew of the OSV BOLD spent today fishing with University of Puerto Rico (UPR) scientists and students. It’s not what you think; we towed bongo nets—they’re called that because the opening looks like the drums—behind the ship to collect floating marine debris (garbage, plant material, plastic, etc.) and plankton (small animals and algae).

Marine debris is a problem in oceans, coasts and watersheds throughout the world. It can result from human activities anywhere in the watershed, from an overturned trash can many miles from the ocean, or from litter left on a beach. Detergent bottles, plastic bags, cigarette butts, and discarded fishing line can become marine debris. Birds, whales, turtles, dolphins and other marine animals become injured or die by becoming entangled in debris or by confusing it with their natural food.

To collect marine debris, the bongo nets are towed through the water at the surface for 30 minutes or longer. We then retrieve the nets onboard and examine the contents. The UPR scientists also collect and preserve animals and algae in the bongo for counting and identification back in their laboratory.

Our first stop was off the north shore by Arecibo. The trade winds continued to blow hard, making our “fishing” all the more difficult. We continued west off the Rincon Lighthouse for more floatable fishing. Here we were more protected from the large ocean swells on the north coast. Several humpback whales appeared out of the water upon our arrival as if to say hi and welcome us to the west coast. Our last fishing stop of the day was off of Mayaguez. The good news, so far, is we found very little garbage. Our main catch was small jellyfish and the blue variety of a little animal called a copepod, which looks like a blue flea. We were treated to a spectacular sunset as we completed operations for the day and sailed east along the south coast towards our next mission off Jobos Bay.

Hunting for Treasure

Feb. 14, 2009 - 6:00 pm (Day 6)

The day started at 5 a.m. in the darkness off the Jobos Bay National Estuarine Research Reserve, a chain of 15 tear-shaped mangrove islets known as Cayos Caribe and the Mar Negro area in western Jobos Bay. The Cayos Caribe islets are fringed by coral reefs and sea grass beds with small beach deposits and upland area. The Mar Negro area consists of mangrove forest and complex systems of lagoons and channels interspersed with salt and mud flats.

The reserve is home to the endangered brown pelican, peregrine falcon, hawksbill sea turtle and West Indian manatee. It is commercially important for marine recreation, commercial and recreational fishing and ecotourism. The area is managed by the Puerto Rico Department of Natural and Environmental Resources and the National Oceanic and Atmospheric Administration, and our data will be provided to the two agencies to assist in their management of this important and beautiful area. Our main goal is to map of the seafloor south of the reserve.

We towed the side scan sonar, which resembles a small rocket, off the side of the ship. The side scan sonar uses sound waves to detect seafloor types (sand, mud, silt) and objects (coral, rocks, manmade debris, ship wrecks, etc.). With good images you can see sand waves and identify objects about size of a car tire. In order to produce a map of the survey area, we tow the side scan sonar in tightly spaced overlapping lines. We call this mowing the lawn because our survey pattern mimics how you’d typically mow your lawn. Sadly we didn’t find any sunken treasure, but several resident dolphins paid us a visit, which was reward enough.

We left Jobos Bay and conducted several bongo net tows looking for marine debris and marine life on our way to our next port of call in Ponce. We arrived in the Port of Ponce around 9 p.m. to transfer scientific personnel and stayed overnight.

The Midnight Watch

Feb. 17, 2009 - 12:30 am (Day 9)

It’s just after midnight and we’re 20 miles south of La Parguera conducting water column profiles, a series of scans that help create a cross-sectional view of the sea. Our crew, along with University of Puerto Rico (UPR) researchers, is sampling down to 3,280 feet (1,000 meters) every two hours and made one profile down to 8,200 feet (2,500 meters). The ship and scientific crew are working around the clock in 24 hour mode (four hours working and eight hours off).

This far out at sea, you are unable to see the lights of land, but the moon is brightly shining. However, by looking out from the opposite side of the ship, staring out into the abyss, you can’t help but be humbled by the stars and seemingly endless ocean night. You tend to get philosophical on the midnight watch. It seems like we left Ponce a week ago, but we only left at 6 a.m. yesterday and have been working out here since about 9 a.m.

Our water column profiler consists of an electronics package with many sensors that measure ocean parameters (salt content, temperature, density, depth, dissolved oxygen, and many more) as the instrument is lowered through the water column. Water sampling bottles are placed around the instrument package and allow us to collect water samples at up to 12 different depths. We’re providing ship time to UPR to allow them to collect information to better understand this area of complex ocean water layers.

There are many different layers of water in the deep ocean. Some start in the North or South Pole and slowly work their way deep below the warmer surface water of the Caribbean Sea. The surface temperature in this area starts at 81 degrees Fahrenheit, drops to 41 degrees at 3,280 feet and seems to level off at 39 degrees at 8,200 feet. Cooler water is heavier and sinks below the warmer, lighter water. In addition to using the data to protect the environment, scientists are also studying this layering of ocean water as a potential way to generate energy using the different physical properties of the water layers.

I’m off watch now and getting ready to get some sleep. We plan to tow the bongo nets later today on our return trip to Ponce. We will be transferring scientific personnel and mobilizing for our next adventure off La Parguera later today.