A Contaminating Diversification: Discovering New Algal Toxins in Our Oceans and its Negative Implications

By Casey Dresbach, SRC intern Coastal waters are one of the world’s greatest assets, yet they are being hit with pollution from all directions (U.S. Commission on Ocean Policy, 2004). As we move further into the Anthropocene, water conditions worldwide are continuing to degrade. The U.S. Environmental Protection Agency’s (EPA’s) 2002 National Water Quality Inventory found that just over half of the estuarine areas assessed were polluted to the extent that their use was compromised (U.S. Commission on Ocean Policy, 2004). Urban wastewater treatment plants, storm runoff, agricultural runoff, and animal feeding operations, are just some of the many sources … Continue reading

The Lasting Legacy of the Deepwater Horizon Oil Spill

By Delaney Reynolds, SRC intern Mankind’s use of fossil fuels as an energy source can place our natural environment at grave risk, and nowhere is that more acute than in the Gulf of Mexico. The environmental threats the Gulf region faces from petroleum production and exploration are not just those that appear in the media immediately following an oil spill or similar catastrophe, but are events that leave a lasting, often unseen legacy that stands to pollute and destroy our natural environment and the creatures that live in it for generations. The Deepwater Horizon, British Petroleum (BP), oil spill of … Continue reading

Propeller Scars in Seagrass Beds: Recovery and Management in the Chesapeake Bay

By Grant Voirol, SRC intern Seagrass beds may seem simple on the surface, but they provide a wide variety of ecosystem services ranging the biotic and abiotic, economical and ecological. Most importantly, seagrass beds protect against coastal erosion, recycle vital nutrients, and provide habitat and food for essential species for the ecosystem and for fisheries (Barbier et al. 2011). However, due to their proximity to cities and human development, these unsung heroes are often subjected to fragmentation via propeller scarring. Seagrasses occur in relatively shallow waters, and when boats and other vessels operate in these shallow depths, their propellers can … Continue reading

North Atlantic right whales and the dangers and effects of entanglement

By Haley Kilgour, SRC intern Mysticetes (baleen whales) arguably fall under the category of charismatic marine megafauna, capable of drawing the public’s attention to their conservation concern. However, many species are in quite a bit of trouble. Injury and mortality from entanglement with fishing gear is a problem that affects whales worldwide (Knowlton et al, 2016). It is perhaps one of the greatest concerns for the North Atlantic right whale, and is the second largest leading cause of death (Knowlton and Kraus, 2001). With only about 500 individual North Atlantic right whales left (Stills, 2017), conservation is urgently required to … Continue reading

Analysis of: Dealing with Mediterranean Bluefin tuna: A study in international environmental management

By Molly Rickles, SRC intern Bluefin tuna is a highly migratory species that can live up to 30 years, currently are listed as endangered under the International Union for the conservation of nature (IUCN; Collette et al. 2011). This is due to the fact that the demand for Bluefin tuna has risen dramatically since 1980, when sushi and sashimi became increasingly popular in Japan. In the 1990’s, catches increased from 9,000 to 40,000 tons per year, and eventually leveled out around 24,000 tons per year. Bluefin tuna are caught using purse sein nets and are often held there for weeks … Continue reading

Climate Change and Fish Performance: How can aquatic acidification affect oxygen transport and swim performance?

By Luisa Gil Diaz, SRC intern Climate change is becoming an ever-more pressing concern. The concentration of atmospheric carbon dioxide (CO2) has rapidly increased to about 400 ppm in 2015; this is the highest it’s been 800,000 years (Luthi et al., 2008). When we think about the effects these high concentrations have on our earth’s systems, we might only consider the atmosphere and weather patterns. However, it is important to remember that the ocean is the largest carbon sink on earth. We are already starting to see the effects of increased carbon dioxide concentrations, as well as increased partial pressure … Continue reading