Acoustic tagging is one of the most powerful marine conservation technologies currently available. REEF uses this technology in both the Grouper Moon Project and the Invasive Lionfish Program to help determine movement, ranges, behavior, and more. But tags and receivers are expensive! We need your help in furthering REEF's valuable marine conservation initiatives by supporting the purchase and implementation of these valuable tools. You can donate securely online at www.REEF.org/contribute. Read on to learn more about these high-tech tools.
What is an acoustic tag, hydrophone, and array? Acoustic tags are small electronic devices that, once secured to a fish, broadcast their identification by ultrasonic sound. Hydrophones that can detect these ultrasonic sounds are placed underwater via a buoy to record the presence or absence of fish. A group of hydrophones strategically placed in an area is called an array. Data from the array are periodically downloaded and analyzed to determine fish movement, residency, behavior, and more.
How do tagging studies make a difference for marine conservation?
REEF's Grouper Moon Project has relied heavily on this technology to help answer questions necessary to hep conserve Nassau Grouper spawning aggregations. Populations of this iconic species have declined dramatically over the past half-century due to overfishing during winter months as they aggregate to reproduce. To find out more about this activity, REEF researchers and our partners at Cayman Islands Department of Environment set up an array of acoustic receivers and started tagging Nassau Grouper in 2005. Using data from this technology, REEF created a video that shows the remarkable migrations Nassau Grouper undertake during the spawning season. This visualization tool played a critical role in the creation of proposed legislation aimed at species conservation in the Cayman Islands. To watch this movie and read more about it, please click here.
Please make a donation at www.REEF.org/contribute so REEF can continue using acoustic tagging in projects and programs. This valuable tool helps ensure that we can protect iconic species like Nassau Grouper in the most effective manner. Thank you for your support.
Every month, scientists, government agencies, and other groups request raw data from REEF’s Fish Survey Project database. Here is a sampling of who has asked for REEF data recently and what they are using it for:
- A PhD student at University of Washington is using REEF data to evaluate the distribution of Giant Pacific Octopus in the Pacific Northwest, and how their abundance is related to urbanization.
- REEF data were provided to researchers from University of Miami for use as part of the project, "NOAA RESTORE: Ecosystem modeling efforts in the Gulf of Mexico: current status and future needs to address management and restoration activities." Data will be used to produce maps depicting stressors in the Gulf.
- Researchers from the Sea Doc Society are using REEF data to evaluate Salish Sea fish and invertebrate assemblages and population trends over the last 15 years.
- A student from Indiana University is using REEF data to evaluate fish populations at the Florida Keys artificial reef, Hoyt S. Vandenberg. REEF Advanced Assessment Team members have been annually monitoring the Vandenberg since it was deployed in 2009.
Did you know? While the REEF Volunteer Fish Survey Project was started in South Florida in 1993, today it has been expanded worldwide! REEF surveys are conducted as part of a diver's regular diving activities; anytime they are in the water, in any of these regions. And more regions are coming soon.
REEF's Survey Project areas:
To find out more about the REEF Volunteer Fish Survey Project, visit www.REEF.org/programs/volunteersurvey.
Have you checked out REEF’s 2017 Field Survey Trip schedule? This year, we are traveling to so many exciting destinations all over the world, from tropical reefs in the Caribbean and Indo-Pacific, to the colder waters of the Canadian Pacific coast. This month we are highlighting two of our fish survey trips happening this May: the Turks and Caicos Islands and the Galapagos Islands! We have limited spaces remaining on both of these trips, and are looking for enthusiastic divers and surveyors to join us. As an added bonus, the Trip Leaders for each of these trips are hosting Fishinars – fun, free, fish identification-themed webinars, that you can tune into from the comfort of your home!
Turks and Caicos, May 6-13, Dive Provo and Ports of Call Resort (details)
Both beginning and advanced REEF surveyors will enjoy expanding their fish identification skills in this beautiful tropical setting, with fish ID reviews led each evening by REEF Trips Program Manager and expert Tropical Western Atlantic surveyor, Amy Lee. There is no need for your non-diving companions to stay at home either – Providenciales is easily accessible from many US-based airports, with several major airlines offering daily flights. Ports of Call Resort was recently renovated, and now has modern rooms and a luxurious pool area. The resort is only steps away from dock leading to the gorgeous white sand of Grace Bay Beach, awarded the designation of TripAdvisor’s Best Beach in the World in 2016. Dive Provo is known for excellent service and concierge diving. The owners are longtime REEF supporters and the week’s dive itinerary will include a variety of the reefs surrounding the islands, including West Caicos, Northwest Point, and French Cay.
And be sure to join us for the Fishinar on Monday, April 10: "Overlooked Fish of Turks and Caicos". Visit www.REEF.org/fishinars to sign up.
Galapagos Islands, May 14-21, M/V Galapagos Sky (details)
REEF’s inaugural Field Survey Trip to the Galapagos Islands is led by REEF Director of Science, and expert on Tropical Eastern Pacific fishes, Dr. Christy Pattengill-Semmens, Ph.D. Known as Darwin’s “living laboratory,” the entire archipelago is a National Park and marine reserve filled with plenty of endemic species, not found anywhere else on the planet. Observe penguins swimming with tropical fish, iguanas feeding underwater and swim beside giant whale sharks and Galapagos sharks. Lucky attendees on this trip will visit the Wolf and Darwin Islands, which boast some of the best diving in the world, while enjoying three land-based excursions throughout the week to Bartolome, the highlands of Santa Cruz and Puerto Ayora, and San Cristobal. The dive team aboard the M/V Galapagos Sky are Galapagos National Park naturalist certified to offer expert guidance both underwater and on land.
And be sure to join us for the Fishinar on Wednesday, May 3: "Fishes in the Land of Finches". Visit www.REEF.org/fishinars to sign up.
In an Enews article last May, I wrote about a collaborative effort between REEF and the Bahia Principe Resort in Akumal, Mexico. The Resort has been working with ReefAid ever since Hurricane Wilma (2005) did major damage to the reefs just in front of the resort, in an effort to study, protect, and restore these reefs. I was originally invited down to conduct a fish census on a large patch reef area off the beach from the property. The destruction to the inshore reef during Wilma was severe and ever since, Bahia Principe has worked with ReefAid to restore this patch reef area, establishing a protected zone around the most hard-hit areas. Part of Bahia Principe's long-term plan is to create a mitigation plan for future storms and to educate guests about ways they, too, can help protect the reefs. The Hotel Gran Bahia Principe is the Yucatan's largest resort complex, and there are currently 14 such resorts worldwide. After our last visit, ReefAid's Founder, Eric Engler and I co-wrote a protection and monitoring plan for the Resort that included periodic roving diver surey assessments, special signs and enforcement of no-swim areas, a coral nursery, and coral and invertebrate monitoring using another non-profit's methodology (ReefCheck).
On our last trip a few weeks ago, Eric and I received Reefcheck training over two days with Gabriela Georgina Nava Martinez, learning their survey methodology. Gaby also taught a Reefcheck class to the Bahia Principe dive staff , their onsite turtle rescue non-rpfit, Ecologica Bahia, and some of the Resort public relations personnel.. Bahia Principe is now a REEF Field Station and is close to becoming an educational center for REEF, teaching fish ID classes and training Resort guests in how to conduct fish surveys. Resort staff will soon routinely conduct Roving Diver Surveys of both the protected area and the offshore reefs frequented by multiple dive operators. Additionally, Reefcheck will train the dive staff to conduct 3-4 surveys per year at first to form a baseline assessment of the inshore protected reef. And finally, this year REEF is running a Field Survey to Bahia Principe (May 17-24, 2008). Please see our Field Survey page on our website at http://www.reef.org/fieldsurveys/schedule to learn more about our upcoming survey and how to participate.
The collaborative efforts between our three non-profits in Akumal represent a proactive involvement among multiple stakeholders to protect a critical resource, one that is very susceptible to damage from development and excessive tourist pressures. The ultimate goal of this synergistic, cooperative effort is to protect a large inshore reef area (see images) and improve the reef integrity with the addition of well-placed coral recruitment modules. To be candid, much of the Mexican Riviera is slated to be developed by an increasing number of resorts, most with requisite golf courses. And there are other environmental concerns in addition to the coral reefs offshore that form part of the Mesoamerican Barrier Reef such as all the cenotes (sink-holes) with their endemic terrestrial and aquatic species; the crucial watershed provided by the cenotes; loss of mangroves; the regional rainforest cover that is in jeopardy; excessive nutrient loading from all the resorts and urban development; not to mention the cultural world heritage significance of the Mayan communities and archaeological sites. However, the good news is that if Gran Bahia Principe is voluntarily willing to adopt special protection measures for their resort, these may serve as a "eco-friendly" archetype for other resorts in the region. This partnership building between organizations at the regional and international level bodes well for the adoption of some conservation plans for the area. Whether the proposed regional development can be slowed to a sustainable level is another story that time will tell.
If you are interested in learning more, here is an excellent summary article on some of the initiatives between resorts and non-profits working to preserve the Mesoamerican Barrier Reef from the NY Times last week. http://travel.nytimes.com/2007/06/24/travel/24headsup.html?emc=eta1
On Tuesday, February 26, REEF will host a community panel discussion to raise awareness about how volunteers contribute to scientific understanding of the Florida Keys environment. Rick Bonney of the Cornell Lab of Ornithology in Ithaca, New York will lead the discussion. Florida Keys-based citizen science practitioners will present on local projects and ways for volunteers to get involved. Topics include fish and bird surveying, native plants and coral restoration. A reception with the speakers will begin at 6:30, followed by presentations at 7 PM. This event will be held at the Key Largo Public Library and is free and open to the public.
A second panel discussion will be held on Wednesday, March 12 at the Florida Keys Eco-Discovery Center in Key West and will focus on citizen science projects in the lower Florida Keys. Speakers include:
Please join REEF staff and community partners for at least one of these educational evenings.
The 17th Great Annual Fish Count (GAFC) has arrived! GAFC is a month long event coordinated by REEF Field Stations that encourages volunteer divers and snorkelers to participate in recreational trips to raise awareness regarding marine habitats and trends in fish populations. REEF partners and Field Stations have organized everything from group dives and snorkels to photo contests, BBQs, and aquarium tours. This is a great opportunity to take a free REEF Fish ID class and connect with other individuals as well as groups, such as local dive operations and non-profit organizations, who are also interested in doing the same objectives. Numerous activities have been scheduled for the Pacific Coast, Hawaii, California, Washington, Florida, Maine, British Columbia, and many other regions- and still more are being added! Details for scheduled events can be found on the GAFC website. Each year GAFC events generate approximately 2,000 surveys in July alone and increase the interest and involvement of hundreds of surveyors worldwide. Participating in a GAFC event is a great way to make an active contribution to marine conservation and get involved with what REEF does year round- engage volunteer divers and snorkelers to collect critical, valid, and cost-effective data. We hope you get involved!
Looking for a special gift for that certain someone. A 2009 REEF Trip makes a perfect gift. REEF Trips are not only fun, have diving and fish watching involved (which makes it perfect by my standards) but these trips are educational, green and are scheduled to some of the most beautiful Caribbean dive destinations. Also as an added bonus - all divers need a buddy so you get a good reason to give yourself a trip too!
REEF Trips are filling up fast. One trip that has been sold out for almost a year, Cozumel in December, just had a few spaces open up. This is your opportunity to join REEF Expert and Cozumel local, Sheryl Shea, on an excellent dive vacation. Sheryl is an a-fishy-a-nado extraordinaire and will be sure to infuse great fish watching, interesting local history and lots of fun on these trips. There are 3 spaces available during Week 1, December 6 – 14, including an opportunity for a double occupancy room – 1 male looking for a roommate and 1 female looking for a roommate. So if you are flying solo and don’t want to pay single occupancy we will put you in touch with a potential roommate. Please give us a call for more information and to reserve your space 305-852-0030. There are also a few spaces still available during the second trip, December 13 – 18. Please call the REEF Travel Desk for booking this trip – 877-295-7333.
So remember give the gift of Fish Watching for the holidays – we can prepare you a beautiful gift certificate and even arrange for it to be presented in an autographed fish ID book (or creature or coral) wrapped in Bottom Crawlers Holiday gift wrap. REEF Trips are a great way to enjoy yourself while making a valuable contribution to REEF on several different levels. Remember make this holiday season one that is All About The Fish!
Data collected as part of the REEF Volunteer Survey Project were the basis of a recent publication evaluating the effect of human population size on coral reef fish populations. The sweeping study, conducted by researcher Dr. Chris Stallings of Florida State University Coastal and Marine Laboratory, revealed that sharks, barracuda and other large predatory fishes disappear on Caribbean coral reefs as human populations rise, endangering the region’s marine food web and ultimately its reefs and fisheries. The study, which used data collected by REEF volunteers at sites in 22 Caribbean nations over 15 years, demonstrates the power of volunteer and community research efforts by non-scientists. Data are often insufficient at region-wide scales to assess the effects of extraction in coral reef ecosystems of developing nations. The REEF citizen science project fills this gap by generating valid and needed data over large geographic areas over long time periods.
While other scientists working in the Caribbean have observed the declines of large predators for decades, the comprehensive work by Dr. Stallings documents the ominous patterns in far more detail at a much greater geographic scale than any other research to date. The study found that nations with more people have reefs with far fewer large fish because as the number of people increases, so does demand for seafood. Stallings said that although several factors -- including loss of coral reef habitats -- contributed to the general patterns, careful examination of the data suggests overfishing as the most likely reason for the disappearance of large predatory fishes across the region. He pointed to the Nassau grouper as a prime example. Once abundant throughout the Caribbean, Nassau grouper have virtually disappeared from many Caribbean nearshore areas and are endangered throughout their range.
Dr. Stalling's article on the study, “Fishery-Independent Data Reveal Negative Effect of Human Population Density on Caribbean Predatory Fish Communities,” was published in the May 6, 2009 issue of the journal PLoS One. The paper is available for download here.
To find out more about how REEF Volunteer Survey Project data have been used by scientists and government agencies, visit the Publications page on the REEF Website.