Navigation Links
Fall bonefish census sounds warning bell that warrants careful future monitoring
Date:11/22/2010

MIAMI November 22, 2010 This October more than 60 guides and anglers in the Florida Keys poled across the flats from Biscayne Bay to the Marquesas, assisting in the annual bonefish census. This year's count, held in extremely difficult weather with lowered visibility, was down by 25-percent from an 8-year mean estimate of 316,805 bonefish to a new low of about 240,000 bonefish, according to Professor Jerry Ault, a fisheries scientist with the University of Miami's Rosenstiel School of Marine & Atmospheric Science.

"Since 2003 we have conducted an annual bonefish census throughout the Keys," said Ault. "It provides researchers, like me, and fisheries managers with an early warning system to identify trends and population changes." This year guides saw fewer bonefish in historically productive areas, a possible reflection of real population changes coupled with differences in the coastal environment. Future counts will be looking for evidence of this as an emerging population trend.

"Bonefish are a good indicator of overall ecological health. These highly mobile fish feed on small marine organisms at the base of the food chain like shrimps, crabs and baitfish; thus, the health of the bonefish population is greatly dependent on the status of the ecosystem as a whole. A change in the population is likely to signal greater issues throughout the coastal ecosystem and provide clues that we can study and address before the situation becomes critical," Ault added.

Ault suggests that if bonefish abundance did decline in 2010, it is still too early to pinpoint the reasons. However, he points out that last winter's January extended cold wave was particularly lethal to tropical gamefish species including tarpon, snook and bonefish, and to their prey. Water temperatures dipped as low as 44oF for periods of more than 3.5 days, and killed mostly small (and young) bonefish in Biscayne and Florida Bays.

The census, conducted in collaboration with local fishermen and guides, as well as the Bonefish & Tarpon Trust (BTT), and the Florida Keys Fishing Guide Associations, is important because bonefish are a major component of Florida's $5.5 billion sport-fishing industry. Based on past results, Ault estimates each bonefish in Florida is worth about $3,500 per year to the industry or about $75,000 over its lifetime.

"We are especially grateful to the guides and anglers of the Keys who continue to work closely with us because one of the great challenges we face is the lack of long-term historical data on the Florida bonefish population," said Tom Davidson, chairman of the BTT. "The datasets we are now developing are just the beginning. We are still learning about natural variations in these dynamic systems, so we can't really be sure yet about the significance of these ups and downs. However, these types of major population fluctuations will ensure that we remain vigilant."


'/>"/>

Contact: Barbra Gonzalez
barbgo@rsmas.miami.edu
305-421-4704
University of Miami Rosenstiel School of Marine & Atmospheric Science
Source:Eurekalert  

Related biology news :

1. Bonefish census reveals population holding steady
2. San Diego Supercomputer Center participates in first Census of Marine Life
3. 1st census shows life in planet ocean is richer, more connected, more altered than expected
4. Census of Marine Life celebrates decade of discovery
5. MBL scientists reveal findings of World Ocean Microbe Census
6. Census of Marine Life program tracking animals on Pacific continental shelf
7. Census of Marine Life publishes historic roll call of species in 25 key world areas
8. A howling success: The fifth howler monkey census on Barro Colorado Island
9. Explorers census hard-to-see sea life: microbes, tiny animals key to Earths food, carbon systems
10. Census data aid disease simulation studies
11. Beyond sunlight: Explorers census 17,650 ocean species between edge of darkness and black abyss
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Fall bonefish census sounds warning bell that warrants careful future monitoring
(Date:4/15/2016)... , April 15, 2016 ... the,  "Global Gait Biometrics Market 2016-2020,"  report to ... http://photos.prnewswire.com/prnh/20160330/349511LOGO ) , ,The global gait biometrics ... of 13.98% during the period 2016-2020. ... angles, which can be used to compute factors ...
(Date:4/13/2016)...  IMPOWER physicians supporting Medicaid patients in ... standard in telehealth thanks to a new partnership with ... IMPOWER patients can routinely track key health measurements, such ... and, when they opt in, share them with IMPOWER ... local retail location at no cost. By leveraging this ...
(Date:3/31/2016)... , March 31, 2016  Genomics firm Nabsys has ... CEO, Barrett Bready , M.D., who returned to ... the original technical leadership team, including Chief Technology Officer, ... Product Development, Steve Nurnberg and Vice President of Software ... the company. Dr. Bready served as CEO ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... 2016 , ... Supplyframe, the Industry Network for electronics hardware ... . Located in Pasadena, Calif., the Design Lab’s mission is to bring together ... built and brought to market. , The Design Lab is Supplyframe’s physical representation ...
(Date:6/23/2016)... June 23, 2016  Blueprint Bio, a company dedicated ... the medical community, has closed its Series A funding ... . "We have received a commitment from ... we need to meet our current goals," stated ... the runway to complete validation on the current projects ...
(Date:6/23/2016)... ... June 23, 2016 , ... Regulatory Compliance Associates® Inc. (RCA), ... free webinar on Performing Quality Investigations: Getting to Root Cause. ... no charge. , Incomplete investigations are still a major concern to the Regulatory ...
(Date:6/22/2016)... 2016 Cell Applications, Inc. and StemoniX ... produce up to one billion human induced pluripotent ... week. These high-quality, consistent stem cells enable researchers ... spend more time doing meaningful, relevant research. This ... manufacturing process that produces affordable, reliable HiPSC for ...
Breaking Biology Technology: