Lad Akins, REEF Director of Special Projects, recently co-authored a paper summarizing work documenting feeding patterns of lionfish in the Bahamas. Understanding the predation behavior of this invasive species is important to be able to predict and mitigate the effects of Indo-Pacific lionfish (Pterois volitans) on Caribbean fish communities. Lad and his colleagues at Simon Frasier University studied the activity levels and prey consumption rates of lionfish on 12 shallow coral reefs in the Bahamas in relation to time of day and prey availability. Lionfish predation rates and activity levels were significantly higher during crepuscular (dawn and dusk) periods than at mid-day. Available prey fish biomass was highest at dawn but lower at mid-day and dusk, suggesting that lionfish predation activity is not limited by prey availability alone. The calculated average daily prey consumption rates was ~3 times the estimates obtained from studies of captive lionfish in their native range and of invasive lionfish observed only during the day. These results will help to predict more accurately the effect of predation by invasive lionfish on native reef fish communities. The study was published in the scientific journal Marine Ecology Progress Series, Vol. 433. A summary of this and all other scientific publications that have included REEF data and programs are given on the Publications Resources page, at http://www.reef.org/db/publications.
Are you ready to take a dive trip that counts? If you are looking to spend a week in a wonderful destination, learning and exploring with a group of fun and like-minded divers and snorkelers, then don't miss out on a REEF Trip. Now is the time to book your 2012 Field Survey with one of REEF's expert guides. Get in touch with our travel experts at Caradonna to find out more and to book your space - 1-877-295-7333 (REEF), or via e-mail REEF@caradonna.com. Details are given below and more information can be found online at http://www.REEF.org/trips
April 21-28 - Nevis - Oualie Beach Resort. Led by Christy Semmens, REEF Director of Science.
May 26-June 2 (SOLD OUT) - Sun Dancer II, Belize - Lionfish Control Study, led by Lad Akins, REEF Director of Special Projects and Peter Hughes.
June 9-16 (SOLD OUT) and June 16-23 (2 SPACES LEFT) - San Blas Islands, Panama - Coral Lodge, led by Paul Humann, REEF Co-Founder and Renowned Underwater Photographer and Author.
July 14-21 - Lionfish workshop in Dominica - Dive Dominica and Anchorage Hotel, led by Lad Akins, REEF Director of Special Projects.
July 28 - August 4 - San Salvador, Bahamas - Riding Rock Inn and Marina, led by Paul Humann, REEF Co-Founder and Renowned Underwater Photographer and Author.
September 22-29 (6 SPACES LEFT)- Sea of Cortez, Baja Mexico - Rocio del Mar liveaboard, led by Drs. Christy and Brice Semmens, REEF Director of Science, REEF Researcher.
September 26-30 (SOLD OUT) - Hornby Island, British Columbia - Hornby Island Diving, led by Janna Nichols, REEF Outreach Coordinator.
October 6-13 - Bermuda - Triangle Diving and Grotto Bay Hotel, led by Ned and Anna DeLoach, REEF Board Members and World-Famous Marine Life Authors and Photographer/Videographers.
November 10-17, British Virgin Islands - Cuan Law liveaboard, led by Heather George, REEF Expert.
December 1-8 (SOLD OUT), Cozumel - Aqua Safari, led by Tracey Griffin, REEF Expert.
REEF members are at the heart of our grassroots marine conservation programs. Over 43,000 divers, snorkelers, students, and armchair naturalists stand behind our mission.
This month we highlight Rick Long. Rick joined REEF in 1997 and has conducted 469 surveys, making him one of Hawaii's top surveyors. Mike is a member of the Hawaii REEF Advanced Assessment Team and he lives on Maui. Here's what he had to say about REEF:
How did you first get involved with REEF?
I did my first REEF survey while diving in the Florida Keys and went inactive until I moved to Maui and joined the fish count at the Hawaiian Islands Humpback Whale National Marine Sanctuary. I learned the Hawaiian reef fish by participating in the monthly activities of a local REEF group called Fish Identification Network (FIN) and by volunteering at the Maui Ocean Center aquarium. I learned even more about fish behavior and corals by volunteering with the Herbivore project at Kahekili Beach, doing Reef Check surveys, and with Eyes of the Reef monitoring for coral bleaching and disease. Volunteering in all of these venues, I have learned not only the common names, but also some of the scientific and Hawaiian names of fish and other marine life. I am an enthusiastic advocate for Citizen Science.
In addition to surveying, what other ways are you involved with REEF?
Through the years, I have participated in monthly REEF survey shore dives organized by FIN and other groups. I have also taught Coral Reef slide shows at the NOAA whale sanctuary in Kihei that includes tips for visitors wanting to get in the ocean to see the beautiful fish and coral reefs in our state.
What is your favorite dive spot and favorite fish?
My friends are just as enthusiastic as I am, and can paddle outrigger canoes, scuba dive, or snorkel almost every day of the week in Maui. My favorite coral reef to survey is Maonakala, located within the marine protected area of the ʻĀhihi-Kīnaʻu Natural Area Reserve, and is one of the few coral reefs not in decline. One of my all time favorite fish is a special little chub or rudderfish that lives on this reef. The Hawaiians had a name for the Pacific Gray Chub (Kyphosus sandwicensis) in a yellow morph coloration and they called it the “Queen Nenue” (nay-new-ay).
New Fishinars continue to be added, and upcoming sessions include special sessions all about cleaning stations with Ned and Anna DeLoach, a Sharkinar with Andy Dehart and Marty Snyderman, and Northeast Fishes, plus several new Caribbean fish topics including fish you will see on your safety stop and those you will find in the biodiversity hotspot of Bonaire! Check out the Webinar Training page (www.REEF.org/resources/webinars) for the most up-to-date listing. These popular online training sessions provide fishie fun in the comfort of your own home. Fishinars are free, and open to all REEF members. You need to register for each session you want to attend. No special software is required, just a web browser. Upcoming sessions include:
Cleanliness is Next to Fishiness: All About Cleaning Stations with Ned and Anna DeLoach - May 15
Special Session: Scubaboard's Bonaire's Top 25 with Jonathan Lavan - May 21
Sharkinar! with Marty Snyderman and Andy Dehart - May 28
Diving the Northeast: Fish You Should Know - June 13
Safety Stop Survey: the Top 12 Caribbean Fish You May See at 15 Feet in 3 Minutes - July 11
Check out the Fishinar page for more details and to register for each session.
Earlier this summer, we proudly released the next generation of REEF survey technology, the REEF Data Entry Program. When surveying began in 1993, divers and snorkelers wrote out each sighted fish species on a slate and submitted the surveys to the database using paper scantron forms. In 1994, we developed pre-printed underwater survey paper to make surveying easier, and in 2005 we said goodbye to bubble-filling and premiered online data entry using the Internet. The time had come to innovate yet again.
With our members in mind, we looked to develop a data entry tool that would meet the varied needs of our surveyors, including those who are traveling or live in areas with limited Internet access. The REEF Survey Data Entry Program allows our volunteers to enter REEF surveys without an Internet connection. When they have access to the web, the entered surveys are uploaded to the REEF online entry portal. Users then logon to the portal, complete error checking, and submit the surveys to REEF. The program operates on both Mac and PC computers, and is available for all of REEF’s survey regions. Our Beta-testers and early users agree it’s a great program, and many of them prefer the offline data entry program over online data entry.
The program is free to download at: www.REEF.org/dataentryprogram. Give it a try next time you survey! We hope you enjoy the program as much as we do. Feel free to send feedback to data@REEF.org. REEF extends a huge thank you to programmer, Chris MacGregor, for his work on this project, as well as REEF members who encouraged us to pursue this option and made contributions to support its development.
Data generated by the REEF Volunteer Fish Survey Project provide an unparalleled opportunity to examine patterns in reef fish diversity (the number and types of species) at the scales of reefs, regions, and even an entire ocean basin. Authors of one recent scientific study took advantage of the over 25,000 Expert REEF surveys conducted at 80 sites from 6 Caribbean ecoregions over 17 years. The authors of the paper, which was recently published in the journal PLoS ONE, used the REEF data to evaluate patterns of biodiversity across many spatial scales (from individual sites to ecoregions). They also incorporated factors such as fisheries impacts and how connected different regions are to each other through ocean currents. They compared levels of different types of diversity-- alpha diversity (α-diversity) that explains local diversity (the number of species found in a given place), and beta diversity (β-diversity) that explains the difference in diversity among sites. Their results showed that fish assemblages are more homogenous than expected, particularly at the ecoregion scale. Within each ecoregion, diversity was mainly attributed to alpha diversity, indicating that fishes within each ecoregion are a subsample of the same species pool. Studies like this one that examine regional patterns of diversity in coral reef systems are important because of declining biodiversity in many areas. The paper's citation is: Francisco-Ramos V, Arias-González JE . 2013. Additive Partitioning of Coral Reef Fish Diversity Across Hierarchical Spatial Scales Throughout the Caribbean. PLoS ONE. 8(10): e78761. To read the full paper, or any of the other 50+ scientific papers that have included REEF data and programs, visit the REEF Publications page.
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:
- Scientists from NOAA’s Office of Protected Resources are using REEF data to evaluate populations of seabass and grouper in the Caribbean.
- A scientist from the University of Washington School of Marine and Environmental Affairs is using REEF data on fishes and invertebrates to evaluate MPAs in the Puget Sound.
- A professor from California State San Luis Obispo is using REEF data to evaluate populations of three large parrotfish species in the Caribbean (Blue, Midnight, Rainbow).
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 Joyce Schulke, one of REEF's earliest members. She has been a REEF member since 1996. An active surveyor who lives in Florida, Joyce has conducted almost 900 surveys to date and has been a member of REEF's Advanced Assessment Team for the Tropcial Western Atlantic region since it's beginnings. Here's what she had to say about REEF:
How did you become involved with REEF?
In 1989 I snorkeled in Cancun. Diving lessons followed and the underwater world was wide open. Being a professional photographer, it was natural for me to learn underwater photography as well. Identifying those fish led me to the Humann and DeLoach book, Reef Fish Identification. It talked about REEF and so I followed through and became a fish surveyor in 1996. In 1999 I qualified as a member of REEF’s Advanced Assessment Team. Being a surveyor inspired me to look harder and enjoy each dive more.
What inspires you to complete REEF surveys?
Suddenly, even common fish are important to find and record. It is exciting to be part a larger goal and I have gotten a good idea of distribution of species, habitat, behavior, and changes to specific areas over the years. There is always a surprise. After diving to 130 feet to see my first Purple Reeffish in the southern Caribbean, I found one at 13 feet in Marathon Key. Recently, seeing the Longnose Batfish far from its normal habitat in 13 feet of water at Blue Heron Bridge in West Palm, Florida, is another great example of the treasures awaiting those who really search.
I have specialized in the TWA and have done all of my diving there. I get enthusiastic when talking fish. I have currently seen and identified 519 species of TWA fish. My husband, Tom, and I used to divide the cost of a dive trip by the number of new species we found. You can imagine how expensive some of those species have become!
Where is your favorite place to dive?
Without hesitation, St. Vincent has added most of my unusual finds, with dozens of new species added on each trip. One trip produced 18 species of eels alone. The diversity of types of diving spots and willingness of Dive St. Vincent to take us to the odd spots makes this a favorite. However, now that I live in Florida, the lure of Blue Heron Bridge in West Palm, has added a few more dozen new species in the last two years.
What fish am I looking for now?
If I haven’t seen it yet, I want it! Whether it’s a Spanish Sardine or a Longnose Batfish, I’m elated. Of course, when I see one that’s never been on a REEF survey before, I grin while emailing REEF for a new fish code.
What do you say to others about joining REEF?
I cannot encourage others enough. Being a REEF surveyor is a great contribution to ocean research and preservation. The real bonus, however, is how it adds a whole new purpose and enjoyment to your personal diving adventures.
Earlier this month, REEF Director of Science, Dr. Christy Pattengill-Semmens, participated in the first of a series of workshops to be held this Fall to analyze REEF and other data gathered from the Channel Islands Marine Protected Areas (MPAs). Originally established in 2003 (and then expanded to include Federal waters earlier this year), this network of no-take marine reserves protects 318 square miles around the northern five Channel Islands off the coast of California. In 2008, the California Fish and Game Commission will conduct a 5-year review of the MPAs to evaluate the effectiveness of the reserve network. The results from the evaluation will inform future decisions made by the Commission under California's Marine Life Protection Act. The data group workshops, held at the National Center for Ecological Analysis and Synthesis, will culminate in a series of publications summarizing the cumulative efforts of dozens of monitoring programs within the Channel Islands MPAs, with an emphasis on analyses that can best address key management questions concerning the reserves. These results will be presented during a special symposium associated with the California Islands Symposium.
Coincident with the establishment of the marine reserves in 2003, REEF initiated a coordinated monitoring program at specific sites inside and outside of the reserves to complement the ongoing survey activities in the area by REEF members. Surveyors on REEF's Pacific Advanced Assessment Team participate in annual REEF cruises aboard the Channel Islands National Marine Sanctuary (CINMS) vessel R/V Shearwater, and this project has generated over 800 surveys to date. These data, along with an additional 750 REEF surveys that had been conducted around the islands prior to 2003, will provide information on the fish assemblages (and more recently key invertebrate and algae species) of the Channel Islands.
To find out more about our work in the CINMS, visit the REEF in Sanctuaries page.
If you plan to be in the Keys at the end of the month, please join us!
What: REEF Holiday Open House
When: Friday, November 30 at 5 PM
Who: Friends, family, members of REEF
Where: REEF HQ: 98300 Overseas Highway, Key Largo, FL (yellow conch house on the median)
Why: Educate the community about REEF conservation programs
Renowned photographers and authors Ned and Anna DeLoach will be on hand to sign books and CDs-perfect for holiday gift-giving! There will also be food, drink, raffle prizes and survey materials for sale. This holiday season, give a gift that counts!