Navigation Links
Researchers use new acoustic tools to study marine mammals and fish
Date:12/29/2009

Over the past decade, researchers have developed a variety of reliable real-time and archival instruments to study sounds made or heard by marine mammals and fish. These new sensors are now being used in research, management and conservation projects around the world with some very important practical results. Among them is improved monitoring of endangered North Atlantic right whales in an effort to reduce ship strikes, a leading cause of their deaths.

"The tools available to acquire and analyze passive acoustic data have undergone a revolutionary change over the last ten years, and have substantially increased our ability to collect acoustic information and use it as a functional management tool," said Sofie Van Parijs, lead author and a bioacoustician at NOAA's Northeast Fisheries Science Center laboratory in Woods Hole, Mass. "These tools have significantly improved monitoring of North Atlantic right whales and enhanced the efficacy of managing ship traffic to reduce ship strikes of whales through much of the western North Atlantic off the U.S. East Coast."

Van Parijs is one of many researchers whose work is described this month in the journal Marine Ecology Progress Series. Her paper is one of about a dozen in a special theme issue focused on acoustics in marine ecology. Van Parijs, who currently heads the NEFSC's Protected Species Branch, is also a co-author of a related paper on acoustic interference or masking, in which marine animals alter their use of sound as a result of changing background noise.

Van Parijs and her colleagues focus on two types of acoustic sensors, real-time and archival. Real-time sensors are mounted on surface buoys, usually anchored or cabled to the ocean bottom, or deployed as arrays towed from a surface vessel. Archival sensors are affixed on bottom mounted buoys equipped with hydrophones to continuously record ocean sounds for long periods of time, often up to three months, before the sensors are temporarily recovered and their batteries refreshed. Some archiving sensors can be mounted on individual animals.

"Marine animals live their lives and communicate acoustically across different time and space scales and use sound for different reasons," said Van Parijs. "We need to use the right tool in the right place for the right need. There is no 'one size fits all' when it comes to using technology in the ocean."

Large whales move and communicate over great distances, while smaller whales and dolphins tend to communicate over smaller areas. Pinnipeds, the group of marine mammals animals that includes seals, walrus and sea lions, breed on land, on ice or in the water, and move and communicate over small to medium distances. Human-produced sounds complicate the sensing problem by adding sounds to what can be a noisy environment.

The use of passive acoustic monitoring is increasing as improved reliability and lower hardware and software costs provide researchers with a set of tools that can answer a broad range of scientific questions. This information can, in turn, be used in conservation management and mitigation efforts. While most of the new technologies have been applied in studies of whales and dolphins, the researchers say the sensors can also be used in studying pinnipeds, sirenians (manatees and dugongs) and fish.


'/>"/>

Contact: Shelley Dawicki
Shelley.Dawicki@noaa.gov
508-495-2378
NOAA Fisheries Northeast Fisheries Science Center
Source:Eurekalert

Related biology news :

1. Researchers to investigate the genetics of congenital heart disease
2. Researchers design a tool to induce controlled suicide in human cells
3. Researchers work on vaccine to improve immune system in newborns
4. IUPUI researchers tackle protein mechanisms behind limb regeneration
5. MDC researchers identify a scaffold regulating protein disposal
6. UCLA researchers engineer bacteria to turn carbon dioxide into liquid fuel
7. Berkeley Lab researchers participate in Homeland Security study of subway airflow
8. Hebrew University, American researchers show trigger to stem cell differentiation
9. Carnegie Mellon researchers receive grant
10. Researchers finds hidden sensory system in the skin
11. Researchers demonstrate nanoscale X-ray imaging of bacterial cells
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/5/2017)... LONDON , April 4, 2017 KEY ... is anticipated to expand at a CAGR of 25.76% ... neurodegenerative diseases is the primary factor for the growth ... full report: https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The ... of product, technology, application, and geography. The stem cell ...
(Date:3/30/2017)... March 30, 2017 Trends, opportunities and forecast ... behavioral), by technology (fingerprint, AFIS, iris recognition, facial recognition, ... others), by end use industry (government and law enforcement, ... and banking, and others), and by region ( ... Asia Pacific , and the Rest ...
(Date:3/24/2017)... Research and Markets has announced the addition ... Trends - Industry Forecast to 2025" report to their offering. ... The Global Biometric ... of around 15.1% over the next decade to reach approximately $1,580 ... market estimates and forecasts for all the given segments on global ...
Breaking Biology News(10 mins):
(Date:9/19/2017)... SAN FRANCISCO , Sept. 19, 2017 ... Management Solutions (VLMS) is pleased to announce the strategic ... VTI to provide clients with validation services using the ... a partner, VTI will provide clients with efficient and ... be a marketing partner for the ValGenesis VLMS system. ...
(Date:9/18/2017)... ... September 18, 2017 , ... Transportable biomass conversion ... and torrefied wood is the topic of a September 27 webinar ... economic viability of transportable biomass conversion facilities for producing biochar, briquettes, and torrefied ...
(Date:9/15/2017)... ... September 15, 2017 , ... ... it calls an ‘Internal Seed B’ round of financing, totaling $600,000. The ... completed using a ‘SAFE’ documentation structure at a company valuation of $10M. ...
(Date:9/14/2017)... ... September 14, 2017 , ... AxioMed ... case in Australia. Dr. Steven Yang completed the procedure on a 35-year-old female ... a degenerative lumbar disc at level L5-S1. The patient failed conservative treatments prior ...
Breaking Biology Technology: