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Home NEWS Science News

United Nations sea treaty should help protect penguins, researchers say

Bioengineer by Bioengineer
December 7, 2021
in Science News
Reading Time: 4 mins read
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Penguins may not require passports to travel, but they do need protection, according to an international research team who analyzed 131 scientific papers on penguin movement at sea. The work comes as the United Nations continues to negotiate a treaty regarding the sustainable use of areas beyond national jurisdiction, the high seas over which no coastal state can claim ownership.

King penguin (Aptenodytes patagonicus)

Credit: Jean-Baptiste Thiebot (NIPR)

Penguins may not require passports to travel, but they do need protection, according to an international research team who analyzed 131 scientific papers on penguin movement at sea. The work comes as the United Nations continues to negotiate a treaty regarding the sustainable use of areas beyond national jurisdiction, the high seas over which no coastal state can claim ownership.

The researchers published their conclusions — and a call for specific protections to help conserve and restore marine biodiversity — in the September issue of Marine Policy.

“In the marine environment, coastal states typically retain management of waters up to 200 nautical miles from their shorelines, but beyond that, the high seas, which represent 64% of the ocean’s surface and 95% of its volume, are considered global commons,” said first author Jean-Baptiste Thiebot, a project researcher at the National Institute of Polar Research in Japan. “Penguins are, largely, ocean wanderers: they venture well offshore during some — or all — of their life stages. Hence, while the public may not think of penguins as traveler animals, we show that penguins are indeed extremely mobile. This mobility also widens the range of threats that they may face at sea, and, in particular, human activities that are intensifying in the high seas.”

Among the most threatened seabird groups, penguins face the most danger at sea from pollution, fishing and climate change. However, Thiebot said, the severity of these threats is largely unknown in areas beyond national jurisdiction. To help elucidate the effects on penguins, Thiebot and paper co-author Magali Dreyfus, research manager at Université de Lille in France, reviewed existing scientific literature on 18 penguin species and their movements.

“Transboundary movements, notably to areas beyond national jurisdiction, are remarkably prevalent among penguin species — there are at least 120 cases of penguins, representing 13 species, using such areas,” Thiebot said. “We highlight that in 16 of the 18 species examined, the birds may undertake spectacular migrations, seasonally or through life-cycle stages.”

According to Thiebot, such movement may depend on the particular life-cycle stage or seasonal need of a species, indicating a need for a more flexible, mobile approach to protecting areas in the high seas.

“We show that the use of areas beyond national jurisdiction by penguin species varies throughout the year, a dynamic pattern supporting the pertinence of developing innovative protection tools, such as mobile marine protected areas,” Thiebot said, referencing a relatively recent management approach facilitated by the use of satellites and other remote monitoring. The protections for a certain area move with the species or features being protected, rather than remaining static as they would on land.

This work follows a letter in Science calling for legal protection for high seas biodiversity, co-authored by 20 researchers from across the globe, including Thiebot.

“The current paper is part of a large effort by scientists worldwide to explain the stakes of protecting this biodiversity in the high seas,” Thiebot said. “In the present paper, we examined to what extent penguins are known to use the high seas, and to what extent the conservation of penguins may depend on these legally binding developments.”

The answer for both, they found, is significant, but more work is needed, according to Thiebot.

“Building on our first-step general approach, further analyses will be required to identify exactly which sites in areas beyond national jurisdiction are a priority for conservation,” Thiebot said. “In the meantime, the ongoing expansion of tracking studies will be key to provide a more complete perspective on the use of areas beyond national jurisdiction by penguins across species, sites and seasons.”

 

###

About National Institute of Polar Research (NIPR)

The NIPR engages in comprehensive research via observation stations in Arctic and Antarctica. As a member of the Research Organization of Information and Systems (ROIS), the NIPR provides researchers throughout Japan with infrastructure support for Arctic and Antarctic observations, plans and implements Japan’s Antarctic observation projects, and conducts Arctic researches of various scientific fields such as the atmosphere, ice sheets, the ecosystem, the upper atmosphere, the aurora and the Earth’s magnetic field. In addition to the research projects, the NIPR also organizes the Japanese Antarctic Research Expedition and manages samples and data obtained during such expeditions and projects. As a core institution in researches of the polar regions, the NIPR also offers graduate students with a global perspective on originality through its doctoral program. For more information about the NIPR, please visit: https://www.nipr.ac.jp/english/

 

About the Research Organization of Information and Systems (ROIS)

The Research Organization of Information and Systems (ROIS) is a parent organization of four national institutes (National Institute of Polar Research, National Institute of Informatics, the Institute of Statistical Mathematics and National Institute of Genetics) and the Joint Support-Center for Data Science Research. It is ROIS’s mission to promote integrated, cutting-edge research that goes beyond the barriers of these institutions, in addition to facilitating their research activities, as members of inter-university research institutes.



Journal

Marine Policy

DOI

10.1016/j.marpol.2021.104640

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