Jul 29, 2021 17:50 JST

Source: Mitsubishi Heavy Industries, Ltd.

"Tanegashima Loggerhead Sea Turtle Survey 2021" Takes Place amid Covid Restrictions
- Over 8 nights, encounters recorded with 26 adult turtles, with 20 confirmed nesting events; 177 turtles identified since 2015
- Drone technology introduced to acquire aerial overview of beach conditions and nesting locations, for enhanced survey efficiency

TOKYO, Jul 29, 2021 - (JCN Newswire) - Since 2015 MHI Group has supported the "Tanegashima Loggerhead Sea Turtle Survey," a program overseen by Earthwatch Japan, a Tokyo-based incorporated nonprofit organization (NPO).(1) The program, conducted annually on Tanegashima, an island south of Kyushu, is targeted at protecting loggerhead sea turtles, currently under threat of extinction, and creating a healthy environment for nesting by clarifying adult female homing rates, size measurements, and egg-laying success rates.

Loggerhead sea turtle digging a nest to lay eggs
 


Before the COVID-19 pandemic, every year several dozen volunteers, both MHI employees and members of the general public, participated in the survey. This year, participation was limited to only six individuals: research specialists and staff of Turtle Crew, a local NPO. The survey was carried out on eight nights in late June, in three areas in the northern sector of Tanegashima's Nagahama Beach.(1) A total of 26 turtles were encountered, and 20 Nesting events were confirmed.

The results of this year's survey indicated a further decline in the number of loggerhead sea turtles landing on Tanegashima to lay eggs. Also, measurements of the nesting females revealed a decline in the number of turtles under 80 centimeters long, which normally feed on plankton in the Pacific Ocean, and an increasing number of turtles of larger size, which generally feed on nutrient-rich shrimp and other seabed fauna on the continental shelf centered on the East China Sea. The cumulative number of turtles identified since 2015 reached 177, adding useful data relating to the loggerhead sea turtle?s ecology.

For the first time, drone technology was used in this year?s survey. In addition to giving the survey team an aerial understanding of conditions on the beach before the survey, the drone?s GPS function was used to identify nesting locations, thereby aiding coordination by the survey team working under nocturnal limitations. From next year's survey, the team is considering expanding drone surveillance to include photography offshore, to permit visual identification of turtles on the ocean surface waiting to go ashore at night to nest.

Yoshimasa Matsuzawa, chairman of the Sea Turtle Association of Japan and head of the project?s research members, was pleased with this year?s results. ?Blessed with favorable weather, we were able to achieve a productive survey despite the limited number of participants. Unfortunately, the number of nesting turtles continues to decrease, not just where we conducted the survey but at other locations in Japan as well, so we need to urgently investigate the causes for this. This year, surveys at some onshore locations were suspended because of the pandemic, so next year we hope to resume surveys, with help from volunteers, on the normal scale, to acquire meaningful data for clarifying the loggerhead sea turtle's ecology."

MHI Group looks forward to participating in the Tanegashima Loggerhead Sea Turtle Survey again starting next year as the Company continues to carry out activities to help protect the global environment and biodiversity, toward achieving a sustainable society.

(1) For further information on the survey program:
Supporting conservation survey for loggerhead turtles in danger of extinction
(2) Loggerhead sea turtles come ashore at night to lay their eggs. This year's survey was conducted between 9 p.m. and 2 a.m. with the aims of confirming nesting events, attaching identification tags and measuring shell dimensions.

Source: Mitsubishi Heavy Industries, Ltd.
Sectors: Environment

Copyright ©2021 JCN Newswire. All rights reserved. A division of Japan Corporate News Network.

Related Press Release


Applus+ IDIADA and MHI Group to Develop Testing and Verification System for Highly Automated Vehicles
September 16 2021 13:52 JST
 
Mitsubishi Heavy Industries and Osaka Gas Acquire Clean Energy Solution, Brighter Future Solar Project
September 13 2021 12:04 JST
 
MHI Thermal Systems' Air Conditioners for the Australian Market Receive Highest Ratings Once Again
September 10 2021 12:02 JST
 
Chevron Agrees on Framework to Join Hydrogen Joint Venture with Magnum Development and Mitsubishi Power
September 10 2021 10:15 JST
 
MHI Rated Top Brand of Heat Pumps by Leading New Zealand Consumer Organization
September 03 2021 14:47 JST
 
Mitsubishi Shipbuilding Receives Approval in Principle from Classification Society for LCO2 Carrier Cargo Tank from France's Bureau Veritas
September 02 2021 17:18 JST
 
Mitsubishi Power to Participate in a Joint Study for the Establishment of a Commercial-scale SAF Production Technology and the Creation of a Supply Chain
August 30 2021 17:55 JST
 
Hydrogen-based ironmaking: MHI Australia and Primetals Technologies join Heavy Industry Low-Carbon Transition Cooperative Research Centre
August 25 2021 18:05 JST
 
Mitsubishi Shipbuilding Concludes Technical Cooperation Agreement with Namura Shipbuilding on LPG powered Very Large LPG/Ammonia Carrier Construction
August 05 2021 14:55 JST
 
Mitsubishi Shipbuilding Begins Verification Testing of Marine-based CO2 Capture System
August 05 2021 12:39 JST
 
More Press release >>

Latest Press Release


More Latest Release >>