Science News
from research organizations

Gaps in reporting leave turtles vulnerable

Date:
February 22, 2016
Source:
James Cook University
Summary:
A new study has called for a change in the way we manage bycatch -- to better monitor the unintentional catching of sea turtles by commercial fishers. The number of turtles caught in a single fishery or year may not seem to be a cause for concern, but even low levels might place pressure on a species when considered across fisheries and over multiple years, say the authors.
Share:
FULL STORY

A James Cook University study has called for a change in the way we manage bycatch -- to better monitor the unintentional catching of sea turtles by commercial fishers.

JCU's Kimberly Riskas led a project that examined more than 10 years of records on turtle bycatch.

"Turtle habitat often spans multiple management jurisdictions. But most fisheries management agencies will monitor bycatch within a single fishery or a single year, without adding records together to determine how many turtles are being caught in total," she said.

Ms Riskas said the findings show a need for bycatch records to be pooled across fisheries and states, as well as over time, to better measure the effect on turtles.

She said the number of turtles caught in a single fishery or year may not seem to be a cause for concern, but even low levels might place pressure on a species when considered across fisheries and over multiple years.

Ms Riskas said the existing approach to managing turtle bycatch does not go far enough to protect turtles.

"Our results show how important it is for management agencies to take the next step in their reporting and analysis protocols. It is essential to analyse bycatch at the population scale and across fisheries; otherwise, we're missing the bigger picture of how bycatch affects long-lived species."

She said a possible solution would be a central database for reporting and collecting bycatch data, which would allow the identification of areas of concern.

"On a global scale, bycatch is one of the most serious threats to the survival of sea turtles, and the more we can combine our monitoring and mitigation efforts, the greater the chance that we can improve the situation before it's too late."


Story Source:

Materials provided by James Cook University. Note: Content may be edited for style and length.


Journal Reference:

  1. Kimberly A. Riskas, Mariana M.P.B. Fuentes, Mark Hamann. Justifying the need for collaborative management of fisheries bycatch: A lesson from marine turtles in Australia. Biological Conservation, 2016; 196: 40 DOI: 10.1016/j.biocon.2016.02.001

Cite This Page:

James Cook University. "Gaps in reporting leave turtles vulnerable." ScienceDaily. ScienceDaily, 22 February 2016. <www.sciencedaily.com/releases/2016/02/160222111227.htm>.
James Cook University. (2016, February 22). Gaps in reporting leave turtles vulnerable. ScienceDaily. Retrieved May 23, 2017 from www.sciencedaily.com/releases/2016/02/160222111227.htm
James Cook University. "Gaps in reporting leave turtles vulnerable." ScienceDaily. www.sciencedaily.com/releases/2016/02/160222111227.htm (accessed May 23, 2017).

RELATED STORIES