REEF Director of Special Projects, Lad Akins, has co-authored several recent scientific publications on the invasive lionfish in the western Atlantic, including:
-Diet richness of invasive Indo-Pacific lionfish revealed by DNA barcoding. Marine Ecology Progress Series. Significant research by REEF researchers and others has been conducted looking at stomach contents of lionfish to identify prey. However, relatively few prey species have been identified because of the challenge of identifying partly digested prey. The authors of this study addressed this issue by DNA-barcoding unidentifiable fish items from the stomachs of 130 lionfish. They identified 37 prey species, half of which had previously not been recorded as lionfish prey.
-Rapid invasion of Indo-Pacific lionfishes (Pterois volitans and Pterois miles) in the Florida Keys, USA: evidence from multiple pre- and post-invasion data sets. Bulletin of Marine Science. This paper uses data from the 20,000+ REEF surveys conducted in Florida since the early 1990s, along with other long-term data sources, to document the appearance and rapid spread of lionfishes in the Florida Keys. Between 2009 and 2011, lionfish frequency of occurrence, abundance, and biomass increased rapidly, increasing three- to six-fold between 2010 and 2011 alone.
- Habitat complexity and fish size affect the detection of Indo-Pacific lionfish on invaded coral reefs. Coral Reefs. This paper explores detectability rates of lionfish using underwater visual census methods such as belt transects and stationary visual census. Knowing the error in these methods specficially for lionfish is necessary to help study this invasive species in the western Atlantic. The authors found that the two census methods detect fewer than 30% of lionfish present in an area and, in more than 50% of the cases, fail to detect any lionfish when one or more indivudals are actually present.
For a complete list of publications featuring REEF data, visit www.REEF.org/db/publications.
REEF's Director of Special Projects, Lad Akins, and REEF affiliate scientist Dr. Stephanie Green (Oregon State University) and REEF Advisory Panel member Dr. Steve Gittings (NOAA National Marine Sanctuaries) participated in the first submersible expedition to assess the lionfish invasion on deep marine habitats off South Florida June 27-29. While REEF and other scientists have studied lionfish in shallow habitats, the Antipodes lionfish expedition gave scientists the opportunity to learn about lionfish populations far below recreational diving limits. The five person submersible is capable of descending to 300 m (1,000 ft) deep and has large acrylic domes that allow for observations and photography.
During the expedition, team members including Dr. Gittings and Dr. Green completed dives to 300ft in the submersible to look for lionfish on both natural rocky and artificial reefs, including the 209ft-long cargo ship Bill Boyd. Both scientists sighted dozens of invasive lionfish in all habitat types during the dive, highlighted by view of the stern of the wreck holding dozens of lionfish. Dr. Green also conducted a number of REEF surveys to document the native fish community in areas invaded by lionfish, sighting a number of reef fishes that are often only found below recreational dive limits, including snowy grouper, roughtongue bass, red barbier, short bigeye, and bank butterflyfish.
The project, hosted by NOVA Southeastern University, was led by OceanGate Inc. and included participants from Florida Fish and Wildlife Conservation Commission, University of Miami, NOVA, and Guy Harvey Foundation, and others. On Saturday following the expedition dives, Lad Akins, Dr. Green, and Dr. Gittings met with media and the public in a half-day summit to discuss the invasion and potential actions to manage lionfish populations in areas that can't regularly be accessed by divers. The summit concluded with a lionfish filleting demonstration by Lad, and a tasting of lionfish ceviche prepared by Kareem Anguin, Executive Chef, The Oceanaire Seafood Room. See the expedition website for more information.
As part of a Florida Sea Grant funded project, REEF is working this summer to assess deepwater lionfish populations in the Florida Keys using ROVs and technical divers.
We want to extend a special thanks to our members who have already made a donation during our Winter Fundraising Campaign. If you haven't yet, please take a moment to support REEF's critical marine conservation work. You can contribute securely online at www.REEF.org/contribute or call REEF Headquarters at 305-852-0030.
With your support, we will build on twenty years of success. In 2014, REEF plans to:
Give a gift to our oceans by supporting REEF programs. This year, we also have gifts to give in appreciation of your donation, which include a print of a limited edition, signed print of Sailfin Blenny ($250 or more), acknowledgement on the Giving REEF ($500 or more), and a special webinar with Ned and Anna DeLoach ($1,000 or more).
The 22nd annual Great Annual Fish Count (GAFC) is rapidly approaching! Will you be participating? We encourage local shops, dive clubs, and other groups to organize an activity anytime during the month of July (and often training events in June). You can view events already scheduled, and add your own, by visiting www.fishcount.org.
The concept behind the GAFC is to not only accumulate large numbers of surveys during the month of July, but to introduce divers and snorkelers to Fishwatching and conducting REEF surveys. Interested groups can offer free fish ID classes, organize dive/snorkel days, and turn them into fun gatherings! To find out more, contact us at firstname.lastname@example.org.
A recent publication in the scientific journal, Conservation Letters, examined the invasion of lionfish in to the western Atlantic and Gulf of Mexico waters. The authors compared traditional reef fish monitoring efforts to less traditional data including the observations of divers through REEF's Volunteer Fish Survey Project and spearfishers. They found that citizen observations documented lionfish 1-2 years earlier and more frequently than the more traditional monitoring efforts. The authors also explored the willingness of spearfishers to help minimize impacts of the invasion by harvesting lionfish. They found that spearfishers who had encountered more lionfish while diving perceived them as more harmful to the habitat than less experienced divers and were also more likely to participate in harvesting initiatives. The authors also report that encouragement from scientists and managers was a far better motivator than the desire to harvest lionfish for personal consumption. This study demonstrates the value of engaging citizens for assessing and responding to large-scale and time-sensitive conservation problems. Visit www.REEF.org/db/publications to see this and all of the scientific publications that have included REEF Volunteer Fish Survey Project data.
Are you a California diver? Or perhaps simply an ocean enthusiast wanting to learn more about critters that call the California kelp forests home? Then be sure to check out the upcoming Fishinar schedule. Whether you've attended one of our famous Fishinars (REEF's version of an online webinar) before or not, you're sure to enjoy one of our upcoming free classes! From the comfort of your own home, or on-the-go on your mobile device, you can join in the camaraderie of your fellow fish-fanatics and learn from experts in our short, free, fun and interactive-styled Fishinars. Check out www.REEF.org/fishinars for more information.
Upcoming California Fishinars include:
A few other Caribbean Fishinars are scheduled this Fall as well, including:
REEF scientists and volunteers just wrapped up another season of the Grouper Moon Project, a collaborative research effort with the Cayman Islands Department of the Environment (CIDOE). In it's 15th year, this important project focuses on one of the largest (and one of just a few) known spawning aggregations of Nassau Grouper in the Caribbean. Over 4,000 grouper amass in one location for 7-10 days following winter full moons. Our team went to Little Cayman around full moons in both January and February this year (both because it was considered a “split year”, meaning the full moon dates were right on the line of predicting which month would be the strong spawning month). February turned out to be the big month, and spawning was seen over 3 nights starting 3 nights after full moon.
Several interesting video clips and stories from the field were posted on REEF's Facebook page. Be sure to check it out and like our page to keep updated on all REEF's programs.
Since 2002, REEF and our partners at CIDOE, Scripps Institution of Oceanography, and Oregon State University have used a variety of research techniques from diver surveys to state-of-the-art technology to study this amazing natural phenomenon. The research has yielded ground-breaking results that have led to improved conservation for Nassau Grouper in the Cayman Islands.
In addition to the research, REEF also is leading the charge on an educational program surrounding Nassau Grouper and spawning aggregations. Thanks to support from Disney Conservation Fund, we have created an exciting K-12 education curriculum rooted in the link between healthy reef communities (including humans) and healthy spawning aggregations. See last month's REEF newsletter for more about the Grouper Education Program.
Want to learn more about the Grouper Moon Project? Watch this short PBS documentary about our efforts.
Many Thanks! The Grouper Moon Project wouldn’t be possible without the dedication, passion, and financial support from many individuals, Cayman Island businesses, and foundations. It truly takes a village to pull off this conservation research project. In 2016, we especially appreciate the continued generous logistical support provided by Peter Hillenbrand, and local lodging and dive operators Reef Divers & Little Cayman Beach Resort and the Southern Cross Club. Funding from the Disney Conservation Fund supported field efforts and the Grouper Education Program. FLOW Cayman Islands has provided support for the live-video feeds for the Grouper Education Project since 2012. Cayman Airways provided inter-island travel support. And the staff at Central Caribbean Marine Institute provided research space for the fertilized egg work. Thanks also to our scientists, REEF volunteers, and partners who made this year's efforts possible. It's impossible to list everyone here - please visit the Grouper Moon page to see the full list - www.REEF.org/groupermoonproject.
If you would like to support this important marine conservation program, please donate to REEF - https://www.reef.org/contribute.
We are kicking off March with REEF's second annual Month of Membership Madness. We have tons of great benefits this month for new members and current members who help us reach our goal of 500 new members in March. So help us spread the word - get your friends and family to join REEF today.
For complete details and official rules, please click here.
Help grow REEF stronger and spread the word this March! www.REEF.org/join
REEF is asking any interested REEF members to submit to us a Field Survey T-shirt design for our upcoming 2008 season. Those of you who have participated in the past on a REEF Field Survey know that you receive a t-shirt as part of your participation in the program and every year we have a different design. There are only a couple of guidelines for you. Our new REEF Shirt must incorporate our REEF flag with our slogan, Diving That Counts! (I will send interested parties the jpeg file upon request). You do not need to incorporate the dive flag directly into the design, it may simply be on the front breast pocket of the t-shirt, for instance, with your design on the back and in this case, no need to ask
for our logo, we'll take care of that.
You should keep in mind our mission as stated on the top of our homepage, and our mantra, "diving that counts." Also please keep in mind that REEF actively surveys in 5 regions, not just the tropical western Atlantic. Please send your submissions to email@example.com, making sure they are in an easily readable format such as a jpeg file (preferred). Please send all entries in by Dec. 31, 2007.
Depending on the number of submissions we receive, we may have our members vote on the winner in January of 2008. Past t-shirts have had fish images, divers surveying, cartoons depicting divers surveying with witticisms, watercolors of fish, etc. Most importantly, our t-shirt design should incorporate the conservation-based focus of our Field Survey Program.
Thanks in advance for your participation and our staff will look forward to your entries. First prize will be a signed and framed 2008 Paul Humann print of two beautiful Eagle Rays.
Field Survey Season 2008 - 5 Spaces are still available for our Turks and Caicos Liveaboard on Aggressor II, April 19-26, 2008.
Please contact Travel for You at 1-888-363-3345 or Joe Cavanaugh at 305-852-0030. The 2008 Field Survey page will be completed shortly - please check back in a week for final content.
Thanks to a three-year grant from the Lenfest Ocean Program at the Pew Charitable Trusts, REEF and collaborators at the Cayman Islands Department of the Environment (CIDOE) and Oregon State University (OSU) will greatly expand the conservation science research being conducted as part of the Grouper Moon Project in the Cayman Islands. The funded research, entitled "The reproductive biology of remnant Nassau grouper stocks: implications for Cayman Islands Marine Protected Area (MPA) management" will evaluate the potential for spawning site MPAs to recover Nassau grouper stocks.
In 2003 the Cayman Islands government protected all five known current and historic Nassau grouper spawning sites in the Cayman Islands. This move was motivated by the 2001 discovery and rapid depletion of a large spawning aggregation (~7000 fish) on the west end of Little Cayman. This rapid legislative response protected the west-end spawning site before all the fish were taken (~3,000 remain), and the site is now one of the largest fully-protected Nassau grouper spawning aggregations in existence. However, the other four spawning sites had previously been fished to exhaustion and are believed to be inactive, i.e. aggregations no longer occur during spawning season.
Over the next three years, REEF will continue the ongoing aggregation monitoring and acoustic research that has been conducted on the Little Cayman aggregation since 2002 and expand efforts to Cayman Brac and Grand Cayman, where historical spawning aggregations were fished out during the last ten years. Four primary research questions being asked as part of the Lenfest-funded project are: 1) Do aggregations form in regions that have been fished out? 2) If aggregations form, do the fish ultimately spawn? 3) Do these aggregations form at historic sites or somewhere else? And, 4) Does spawning at these remnant aggregations result in new recruitment?
The new research kicked into gear last month with a team of Grouper Moon scientists and REEF volunteers who conducted twelve days of field work in Little Cayman and Cayman Brac. The team visually monitored the Little Cayman aggregation, documenting the largest number of fish since the fishing ban was implemented in 2003. Spectacular mass spawning was documented at dusk seven days after the full moon. Grouper Moon scientists conducted extensive work on Cayman Brac to enable future visual monitoring on the historical aggregation site and initiate an acoustic tagging study that will facilitate a better understanding of the behaviors of Nassau grouper on an island with a limited number of reproductively-aged individuals. Later this Spring and Summer, REEF researchers, volunteers and an OSU graduate student will return to the Cayman Islands to conduct larval recruitment studies and begin acoustic tagging on Grand Cayman.
Capitalizing on the the increased breadth of research questions being asked as part of the Lenfest Ocean Program grant, the CIDOE is supporting a larval dispersal study that also kicked off this year under the guidance of Dr. Scott Heppell from OSU. Three satellite drifters were deployed at the Little Cayman aggregation site on the night of spawning. The paths will be recorded by ARGOS satellites for 45 days and the resulting data will be used to develop a larval dispersal model in collaboration with researchers from University of Miami. Check out the 2008 image gallery to see where the drifters are today.
REEF extends a big thank you to the island business who continue to support this project, including the Little Cayman Beach Resort and the Southern Cross Club, as well as Peter Hillenbrand and Mary Ellen Cutts, Franklin and Cassandra Neal, and the 2008 REEF Volunteer Team -- Judie Clee, Brenda Hitt, Denise Mizell, and Leslie Whaylen. We also greatly appreciate the continued support of our collaborative team, including the CIDOE and OSU, and the Lenfest Ocean Program at the Pew Charitable Trusts.