There is growing concern that lionfish will affect the structure and function of invaded marine ecosystems. REEF Director of Special Projects, Lad Akins, is a co-author on a recently published paper evaluating these effects. The study was published in the scientific journal, PLoS ONE. Lead author, Stephanie Green, from Simon Fraser University (SFU), along with Akins and other co-authors Aleks Maljković (SFU), and Isabelle Côté (SFU), documented a dramatic 65% decline in 42 species of reef fish eaten by lionfish over a two year period. The study, conducted off New Providence Island in the Bahamas, used data collected during REEF's volunteer lionfish projects to track the explosion of the lionfish population over time, and reveals that lionfish biomass increased from 23% to nearly 40% of the predator biomass on the study sites between 2008 and 2010. This study represents the first documented direct impact of lionfish predation on native reef fishes and highlights the importance of control programs to minimize impacts. You can find a link to this and all published papers that have included REEF data on our Publications page.
New research using powerful genetic techniques and the REEF survey data have revealed two new species of hamlet in the Caribbean. The findings were recently published by scientist Ben Victor in the Journal of the Ocean Science Foundation. As our Caribbean surveyors know, hamlets are a group of colorful small sea basses that can sometimes cause ID confusion because of their myriad of colors and patterns. The varied color patterns in these small predators are thought to be a result of mimicry of other colorful but more innocuous herbivore species. There has been ongoing debate about which are actual species and which are simply just color variants or morphotypes. Ben's research revealed significant genetic differences among what seemed to simply be variations of the well-known Barred Hamlet. Ben stated that "the REEF database supplied valuable survey data indispensable to understanding ranges and abundances and unmatched in its comprehensive coverage".
The two new species are the Florida Barred Hamlet, Hypoplectrus floridae, and the Contoy Hamlet, H. ecosur. The typical Barred Hamlet (H. puella) that is found throughout the Caribbean will be updated in the REEF database to be called the Caribbean Barred Hamlet. Florida Barred Hamlet have been found in the eastern Gulf of Mexico and South Florida, and overlaps in range with the Caribbean Barred Hamlet in those areas. To date, the Contoy Hamlet has only been documented on Isla Contoy near the northern tip of the Yucatan peninsula and maybe Isla Mujeres. Florida Barred Hamlet are distinguished by a pair of symmetrical dark spots at the base of the caudal fin along with a break in the mid-body narrow bar. The Contoy Hamlet is distinguished by the same paid of dark spots at the base of the tail as well as a series of additional dark spots along the upper caudal peduncle and below the dorsal fin. A PDF of Ben's paper can be found online here, and it includes many pictures of the new species. Video of the Contoy Hamlet has been posted on Youtube.
REEF surveyors in the regions of the new species are encouraged to learn the differences and being reporting them as distinct species using the Unlisted Species section of the online data form. To see a list of a all scientific publications that have included REEF data and projects, visit our Publications Page.
In the summer of 1993, a group of pioneering volunteers conducted the first REEF fish surveys. Twenty years later, the Volunteer Survey Project and other REEF initiatives are leading the way as innovative and effective marine conservation programs. You are invited to join us this summer to celebrate 20 years of success. REEF Fest will take place August 8-11 in Key Largo, Florida, and will feature four days of diving, learning, and parties. Complete details, including the schedule, lodging options, diving and kayaking opportunities, and social gatherings can be found online at: www.REEF.org/REEFFest2013
All REEF Fest events are open to the public, but pre-registration is requested for social events and workshops. Register using this online form. Tickets are required for the Saturday Dinner Cruise celebration. Purchase dinner cruise tickets online here. A quick look at the schedule can be seen here. Questions? Please send us an email at REEFHQ@REEF.org or call us at 305-852-0030. We look forward to seeing you all in August!
REEF members are at the heart of our grassroots marine conservation programs. Over 50,000 divers, snorkelers, students, and armchair naturalists stand behind our mission.
This month we highlight Joe Gaydos, Ph.D., an avid REEF volunteer in Washington State and Director of the SeaDoc Society (a REEF Field Station). Joe has been a REEF member since 2003 and has conducted 120 surveys. He is a member of the PAC Advanced Assessment Team, and Joe was instrumental in initiating the AAT San Juan Islands Annual REEF Monitoring Project that kicked off this summer (see story in this enews issue). Here's what Joe had to say about REEF:
How are you involved as a REEF member?
I conducted my first REEF survey in Washington State in 2003, and have been doing them ever since. In addition, the program I run, the SeaDoc Society, is a REEF Field Station. We’ve hosted numerous fish and invertebrate identification classes and multiple Great Annual Fish Count dives, but I’m most excited about our new monitoring program collaboration. We’ve partnered with REEF to have Advanced Assessment Team Divers come to the San Juan Islands for annual week-long survey trips. We expect that over the next 8-10 years these data will help us understand long-term sub-tidal changes in the ecosystem.
What inspires you to complete REEF surveys? What is the most interesting thing you’ve learned doing a REEF fish survey?
I live and dive in the Salish Sea, a 17,000 square kilometer inland sea shared by Washington and British Columbia. The data collected by REEF volunteers are valuable to the managers in the region who are working to recovery declining species like Northern Abalone and Rockfish. I love being able to collect data that is meaningful.
In your opinion, what is the most important aspect of REEF’s projects and programs?
As a scientist, I love that the REEF data are collected in a way that is scientifically rigorous. Volunteers are trained and their level reflects their training and experience. Also, it is great that the data are collected and stored in a way that they will always be available for evaluation – even decades from now. This is citizen-science at its finest.
Where is your favorite place to dive?
My favorite place to dive is about 2 miles from my house. It’s a high current area split by an island so you get the benefits of seeing all of the invertebrates that flourish in the current, but you can always dive on one side of the island or the other. The site is familiar, but strikingly beautiful and I always find something new. The water is cold here and people generally expect everything to be dull and they are amazed to see videos or stills of colorful invertebrates and fishes.
Is there a fish (or marine invertebrate) you haven’t seen yet diving, but would like to?
Here, most everybody wants to see a Giant Pacific Octopus – 150 lbs, 2,240 suckers (unless it’s a male, then they only have 2,060) – what’s not to love. But me, I still want to see a Pacific Spiny Lumpsucker. They’re only the size of a golf ball, but dang are they cute. When is Disney going to make a movie starring one of them?! Maybe this year.
Happy holiday week! I hope you are looking forward to Thanksgiving and the upcoming holiday season.
REEF is pleased to bring you our monthly update on the many projects that continue to actively engage you, our valuable members, in marine conservation. Before we get there, though, I want to ask for your help in meeting an ambitious but critical goal to keep these projects going: please help REEF raise $100,000 by the end of the year. Please click here to make a secure, tax-deductible donation today.
Your support helped EEF Science Director, Dr. Christy Semmens, participate in the annual Gulf and Caribbean Fisheries Institute meeting held earlier this month, where she presented the results of monitoring two artificial reefs in the Florida Keys National Marine Sanctuary. Your support helped REEF Field Operations Director, Joe Cavanaugh, participate in multi-stakeholder training to protect coral reefs in Akumal, Mexico. Your support helped develop new online data entry for the Pacific and Hawaii REEF survey regions, allowing REEF to improve data management. Your support helped REEF promote the Volunteer Survey Project as a diver acquisition eco-activity to the dive industry at DEMA Show 2007. Your support helped to develop an innovative home study course to train divers and snorkelers in "fishwatching" and conducting marine life surveys. Your support counts for a lot at REEF! Please click here to make a secure, tax-deductible donation today.
Other items of interest this month include tips for using the new REEF.org website, a design contest for the 2008 Field Survey tshirt, important news about the REEF Store and interesting happenings at REEF HQ.
Enjoy your turkey and we'll see you next month!
On Tuesday, March 4, REEF was pleased to host Congresswoman Ileana Ros-Lehtinen at its headquarters in Key Largo, Florida. Ros-Lehtinen represents Florida’s 18th district, including Monroe County and the Florida Keys. REEF Board and staff discussed the importance of training volunteers in marine conservation to preserving the long-term health of coral reefs in the Florida Keys and worldwide.
“I am thrilled to be visiting REEF and getting a look at their wonderful conservation and diving programs as this group is comprised of those who truly enjoy the beauty and serenity of the seas, divers and marine conservationists,” Ros-Lehtinen said.
The group laid out plans to train volunteers to conduct biological monitoring and assessment of key managed areas through the REEF Volunteer Survey Project. Ros-Lehtinen suggested presenting scientific findings in local schools and pledged to learn to do marine life surveys on her next visit to the Florida Keys. The potential threat posed by exotic invasive lionfish to the Florida Keys reef tract and ways to educate residents about the problem were also discussed.
“This is a great opportunity to share some of the important work REEF is doing to preserve the natural, national heritage of the Florida Keys coral reef ecosystem,” said REEF Executive Director, Leda Cunningham. “We are honored to have the Congresswoman at REEF HQ and look forward to working collaboratively on projects such as training volunteers to collect marine life data and keeping exotic invasive lionfish out of Florida Keys waters.”
My husband and I recently joined 10 other REEF volunteers on a Field Survey to Akumal, Mexico. Akumal is located on the Mayan Riviera, quite near the Mayan ruins at Tulum, and about 60+ miles from Cancun, Mexico. Our time was filled with diving and conducting REEF surveys, fish identification seminars, exploring cenotes, and learning about sea turtle nesting research.
We stayed at Gran Bahia Principe Resorts, part of an international resort group, which is really 3 resorts in one and covers an enormous acreage on the ocean. The area was so large that one had to catch one of the resort’s trams to travel from one place to another. Sunny weather is the norm that time of year and we had no rain the entire week.
One of the interesting geographic features in this part of Mexico is the cenote, a type of sinkhole which connects to subterranean bodies of water and sometimes cave systems. The rainwater which fills the cenote is crystal-clear because it has been filtered through rock substrata and contains very little particulate matter. The REEF group had the opportunity to dive and snorkel several of these cenotes when ocean conditions turned too rough for dives on the reef, and it proved to be an amazing and unique experience! Since freshwater and salt water are both found in some cenotes, REEF divers surveyed some unusual fish, and experienced the sensation of diving through a halocline, a region below the surface of a body of water where there is a significant change in density due, in the case of cenotes, to increased salinity. Many of the divers described the experience of ascending from salt water into fresh as akin to a dream state. –“The fresh water was so clear, it was hard to believe I was still underwater!" Strange and unusual formations in the caves accentuated the dreamlike atmosphere. Illuminated only by divers’ lights, stalagmites, stalactites and columns stirred the imagination. Fish, bats and birds find a sanctuary in these caves.
Another unique element of Bahia Principe was a local environmental group, Eco-Bahia, whose members work with the resort to help preserve the stands of coral and other sealife found off the beaches. Eco Bahia’s representative, Diana Garcia Urrutia, explained to REEF members all the goals of their program, including the preservation of sea turtle nests. Many sea turtles, mostly Loggerheads and Hawksbills, return to Bahia Principe’s beaches each summer to dig their nests and deposit their eggs. Members of Eco Bahia along with community volunteers protect the turtles as they nest, then collect the eggs and rebury them in a safe, fenced environment just off the beach. When the baby turtles begin to dig out, Eco Bahia volunteers gather them up and bring in local school children who name each baby and send it safely out to sea with a kiss and a blessing. What an excellent way to assure that younger generations will have an emotional connection to the wildlife of their area!
The Akumal Field Survey was certainly a pleasurable and enlightening experience! To find out more about the REEF Field Survey Program and to book your space on a dive vacation that counts, visit the REEF Trips section of our webpage. To view photo albums from the Akumal Field Survey, click on these links: Akumal album 1, Akumal album 2, Akumal album 3, Akumal album 4. The Akumal Field Survey Data Summary is also available online.
Two of REEF's Charter Members, Douglas and Jane Rorex, recently returned from their annual dive vacation to Bonaire. Of course they conducted REEF surveys, documenting the rich fish diversity that is found on Bonaire's reef. But they also each made milestone dives during the trip. Douglas conducted his 3,000th dive and Jane conducted her 700th dive! Both were given medals from the dive resort and Ned and Anna DeLoach, who were in Bonaire for their annual Marine Life Education Program, signed their log books. Douglas and Jane have been with REEF since the beginning -- they are REEF Members 25 and 26. They participated in one of the very first Field Surveys that was held in May 1994. Douglas is a member of the REEF Advanced Assessment Team and has conducted over 350 surveys; Jane has conducted 85 surveys.
Douglas and Jane greatly enjoy their annual trip to Bonaire -- this was their 15th year! Some of their favorite fish finds include the common but always beautiful juvenile yellowtail damselfish as well as the more cryptic frillfin goby and candy basslet. Douglas also conducts surveys on deep reefs in Bonaire (140 feet+), where he finds sargassum triggerfish and striped grunt. Bonaire is also a great place to find frogfish. One of their favorite frogfish stories is about two frogfish that they found on a large coral head at the dive site Windsock. The female had been there for several weeks and was getting larger by the week (obviously ready to mate). One day as Douglas and Jane were hovering nearby, a smaller male frogfish came from underneath the coralhead, waddled over next to her and sort of nuzzled her. She responded by taking her left pectoral fin and giving him a perfect stiff arm. She really smacked him. The rejected male made a hasty somewhat dazzed retreat back to the underside of the coral head. Douglas looked up at Jane to see her practicing the stiff arm manevaure and considering adding it to her repotorie.
Congratulations Douglas and Jane!! Thank you for your enduring support of and involvement with REEF.
REEF's Pacific Northwest Advanced Assessment Team (AAT) gathered in mid-August to survey fish and invertebrate life in the Olympic Coast National Marine Sanctuary (OCNMS). Twelve divers conducted over 120 REEF surveys in the week-long project on Washington's northwest coastline, gathering data to add to the previous 7 year's worth that the project has generated. Twelve sites were surveyed by the divers. The Sanctuary is home to many colorful fish and invertebrates and is a popular spot for sport diving. It is also a popular spot for fishing and there is concern that biodiversity has been diminishing in the area, especially in some species of long-lived rockfish such as Tiger and China Rockfish. Data collected by the AAT will be helpful in tracking these population trends.
Members of the OCNMS REEF survey team were treated to a great week of diving and lots of exciting sights in this remote and wild part of Washington State. Whales were seen every day. Basket stars and giant pacific octopus were encountered by many. And about half the team conducted an optional night dive to remember off of Tatoosh Island in the open Pacific surrounded by Stellar Sea Lions. Projects like the annual OCNMS monitoring are a great way for active REEF volunteers to apply their skills and expertise. These projects are also just one more reason for REEF surveyors to improve their identification skills and increase their survey experience level.
A big thank you to the participating AAT members: Claude and Janna Nichols, Ron and April Theod, Jeanne Luce, David Jennings, Greg Jensen, Todd Cliff, Nick Brown, Pete Naylor, Lorne Curran and Stan Kurowski. Thanks to Mike Furguson and his great crew at Porthole Dive Charters and to Winter's Summer Inn for supporting the project. Funding for the project was provided by The Sustainable Path Foundation and The Russell Family Foundation.Share on Facebook