ACAP Latest News

Read about recent developments and findings in procellariiform science and conservation relevant to the Agreement on the Conservation of Albatrosses and Petrels in ACAP Latest News.

Mitigating seabird bycatch by Albacore longline fishing vessels in the south-east Atlantic

Global Ecology and Conservatiin paperGraphical Abstract from the publication

Hsiang-Wen Huang (Institute of Marine Affairs and Resource Management, National Taiwan Ocean University, Keelung) and colleagues have published open access in the journal Global Ecology and Conservation on testing best-practice methods for mitigating seabird bycatch.  They report that on average nearly three seabirds were taken on each of 103 sets in the south-east Atlantic.  Species caught included Black-browed Albatross Thalassarche melanophris, White-chinned Petrel Procellaria aequinoctialis and Great Shearwater Ardenna gravis.  Night setting emerged as the most effective mitigation measure, although Whie-chinned Petrels were still caught at night.

The paper’s abstract follows:

“Seabird bycatch—particularly involving albatrosses and petrels—remains a significant conservation concern in pelagic longline fisheries.  This study evaluated the effectiveness of three mitigation measures—bird-scaring lines (BSLs), weighted branch lines, and night setting—in reducing seabird bycatch in the Taiwanese albacore (Thunnus alalunga) longline fishery operating in the southeastern Atlantic Ocean.   Observations were conducted aboard a commercial vessel during 103 longline sets in 2013. Four BSL treatments were tested: single and double conventional BSLs and single and double experimental BSLs recommended by the International Commission for the Conservation of Atlantic Tunas (ICCAT), each combined with either weighted (60 g at 3 m from the hook) or unweighted branch lines.  A total of 298 seabirds were [sic] caught during line setting, with an additional 18 birds caught and released alive during hauling and trolling.  Night setting emerged as the most effective mitigation measure, with a bycatch rate of 0.046 birds per 1000 hooks—substantially lower than the 1.101 birds per 1000 hooks recorded during daytime setting. While BSLs effectively deterred seabird attacks within their aerial extent, their efficacy declined when baited hooks remained within the diving range of seabirds beyond this zone.  Weighted branch lines reduced seabird bycatch by 61 %; however, they were also associated with a potential decrease in albacore catch rates.  Our findings highlight that the effectiveness of best practice mitigation—namely, the combined use of BSLs and weighted branch lines—depends on ensuring that baited hooks reach depths beyond seabird diving capabilities before exiting the aerial extent of the BSLs.  Further optimization is needed to balance conservation outcomes with fishery performance.

Reference:

Huang, H.-W., Liao, H.-C., Kuo, T.-C., Chen, S.-C. & Yeh, Y.-M. 2025.  Best practices for mitigating seabird bycatch on Taiwanese albacore longline fishing vessels operating in the southeastern Atlantic Ocean.  Global Ecology and Conservation 62, e03752.

John Cooper, Emeritus Information Officer, Agreement on the Conservation of Albatrosses and Petrels, 04 August 2025

The Friends of Midway Atoll National Wildlife Refuge holds its first art contest

Laysan Albatrosses FOMA art competition 2025 One of the 10 ten: A Laysan Albatross family

“The first annual Friends of Midway Art Contest judges have already selected the 1st and 2nd place winners, who have been notified.  Now we need YOUR help on voting for the Peoples' Choice Award winner!

The Art Contest Committee has gone through the difficult process of selecting the top 10 pieces of art out of an incredible 31 submissions.  We appreciate each and every artist who participated and will be showcasing all artwork publicly (and announcing winners) August 15th.

Voting is now open August 1st - 8th, one vote per person - anyone can vote.   The voting poll can be found here.

Feel free to share this voting poll with friends and family.  The more voters, the better!”

Picture1George and Geraldine: Midway's breeding Short-tailed Albatrosses, artwork by Holly Parsons

John Cooper, Emeritus Information Officer, Agreement on the Conservation of Albatrosses and Petrels, 01 August 2025

UPDATED. What of the albatrosses? A tsunami reaches Kure and Midway Atolls following a Russian earthquake

Tsunami Midway 30 July 2025
Tsunami signal from Midway Atoll, 30 July 2026

 

UPDATE FROM THE KURE ATOLL CONSERVANCY: "Updates from the crew stationed on Kure rolled in yesterday. The scene from the pier shows that the high water mark came up the beach but did not inundate the dunes or any of the paths to the interior. The westernmost point of the island is a long sandy spit and there was some overwash there, but overall the impact from the tsunami is minimal".

An earthquake registered at 8.8 off Russia's far eastern Kamchatka Peninsula on 29 July has triggered up to four-metre tsunami waves in the North Pacific.  It has been reported as the sixth largest on record.  The low-lying atolls of the North Western Hawaiian Islands and their breeding populations of three species of albatrosses and of other ground-nesting seabirds are particularly at risk to being overrun and flooded by climate change-induced sea level rise, tsunamis, and surges and strong winds caused by storms as has happened in the past, leading to the loss, depending on the stage of breeding, of eggs, chicks and adult Black-footed Phoebastria nigripes and Laysan P. immutabilis Albatrosses.

 

Short tailed pair Midway Wieteke Holthuijzen
At risk of flooding: a Short-tailed Albatross
Phoebastria albatrus pair on Kure Atoll, photograph by Cynthia Vanderlip

At the time of writing, the highest tsunami wave from the 29 July earthquake recorded by the tidal station at Midway Atoll was 1.8 m.  It seems likely a similar height occurred at Kure Atoll.   Inhabitants on both atolls sheltered above the ground floor in buildings.

ACAP Latest News will continue to track and report on any effects of the tsunami on the Hawaiian albatross-breeding atolls as information comes to hand from those currently living on Kure and Midway.

John Cooper, Emeritus Information Officer, Agreement on the Conservation of Albatrosses and Petrels, 30 July 2025

Flesh-footed Shearwaters add nutrients to Lord Howe Island

Flesh footed Sheawater Tim Reid
Flesh-footed Shearwater on Lord Howe Island, photograph by Tim Reid

Megan Grant (Institute for Marine and Antarctic Studies, University of Tasmania, Newnham, Australia) and colleagues have published open access in the journal Ecology and Evolution on Near Threatened Flesh-footed or Sable Shearwaters Ardenna carneipes adding nutrients via guano to their breeding sites on Lord Howe Island.

The abstract follows:

“Seabirds are long-range transporters of nutrients, linking their marine feeding grounds with their terrestrial breeding and roosting sites. Seabirds can influence the terrestrial environment in which they reside by depositing nutrient-rich guano, which acts as a natural fertiliser. Here, we determined the nutrient content of Sable Shearwater (Ardenna carneipes) guano and used stable isotope analysis to determine changes in isotope signals and nutrient concentrations through the terrestrial environment across three sites on Lord Howe Island, Australia: active shearwater colony, abandoned shearwater colony and un-colonised area. The concentration of nitrogen in Sable Shearwater guano was like other Procellariiformes, and this was reflected in the palm leaves and invertebrates (slugs) sampled from seabird colonies, which were enriched in δ15N relative to the control site. In contrast, nitrogen stable isotope values in soils were not significantly different among sites, indicating the presence of historic seabird colonies. Guano was rich in phosphorous and potassium, which fertilised soils in the shearwater colony compared to sites without seabirds present. It is expected that the island will experience a reduction in nutrient inputs from guano because the shearwater population is in decline, and this may result in changes to vegetation assemblages in the colonies over time.”

Reference:

Grant, M.L., Reichman, S.Z., Bond, A.L. & Lavers, J.L. 2025.  Seabirds enhance primary producer and consumer isotope signals on a sub-tropical island.  Ecology and Evolution 15(7) doi.org/10.1002/ece3.71636.

When art meets conservation. ACAP supporter Isabelle Beaudoin sculpts a Black-footed Albatross

Isabelle Beaudoin Blackfoot model 2
Black-footed Albatross and chick, sculpted by Isabelle Beaudoin

ACAP Latest News regularly carries articles that feature the links between art and science in relation to the conservation of ACAP-listed albatrosses and petrels.  Subjects covered include paintings and drawings (notably in collaboration with Artists & Biologists Unite for Nature (ABUN) to mark annual World Albatross Day on 19 June since 2020), public statuary and even cake baking.  Less frequently reported are sculptures. An example of a Black-footed Albatross Phoebastria nigripes modelled in clay by ACAP supporter Isabelle Beaudoin who recently spent time among albatrosses on Kure Atoll (Hōlanikūj) in the North Pacific follows, using her own words.

Isabelle Beaudoin Blackfoot model 6
Isabelle poses with her sculpture prior to its painting

“Since I’m no longer out in the field every single day (though it will pick up again soon!), this page will on occasion be given over to other bird-themed content - like art!

What do you guys think of my clay Ka’upu (Black-footed Albatross) and chick?  This was my first time ever working with the clay medium, and it was challenging to shape the bird in 3D.  But I’d spent so many hundreds of hours watching Ka’upu from every angle that my eye knew what it was looking for, even if my hands and fingers didn’t always know how to render it.   I’m pretty happy with it though.  I started with a wire ‘skeleton’ or frame, so that the figure would be rigid and could stand; then I covered the wire with clay and shaped it until it looked right. I made a base, a nest bowl and a little baby chick.  I let all this air dry over a couple of weeks, then I painted them all, and glued tiny shells and moss- and grass-like things to the base.  A shoutout to Etasha Golden who provided me with all the materials (from the wire to the clay to the shells) and encouragement to embark on this project!  You can see her in the last [Facebook] photos helping me to set up a photoshoot.  I’ve named these two Derpy and Derpling, after a bird I met and named on the island.  They will live on my desk at the university.”

Isabelle Beaudoin Blackfoot model 7
Wire skeleton prior to adding the clay

Isabelle Beaudoin Blackfoot model 4
The sculpture prior to painting

Isabelle continues “I think about the atoll every single day.  Sometimes when I pause, and detach myself from the hubbub and stress of my life now, I can still hear faint echoes of them all around me. The albatross.   The notes of whinnies, whistles, bill-clacks, screams, moos and coos used to suffuse the air and weave themselves through me.  Day and night.  The longing I feel to be in their presence again is impossible to describe, and is stronger than what I’ve ever felt for humans.  Who knows why that is.  But I have to remember that they aren’t really gone.  They’re still all around me.  In my heart.  In my memories.  In the sky.  In the sea.   In the air. Making art like this makes them feel closer.”

Isabelle Beaudoin Blackfoot model 3
Close up of the sculpture’s base, photographs by Isabelle Beaudoin

John Cooper, Emeritus Information Officer, Agreement on the Conservation of Albatrosses and Petrels, 29 July 2025

The Agreement on the
Conservation of Albatrosses and Petrels

ACAP is a multilateral agreement which seeks to conserve listed albatrosses, petrels and shearwaters by coordinating international activity to mitigate known threats to their populations.

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