Mayumi SatoMayumi Sato: BirdLife International EAAFP Seabird Working GroupJune 12, 2013

IDENTIFICATION OF MARINE IMPORTANT BIRD AREAS

andESSFP SEABIRD WORKING GROUP

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Launch of Marine IBA Project in Asia

• Convened the first marine IBA workshop for the region in April 2010.• Participants: Russia, Japan, Malaysia, Indonesia, Philippines, Myanmar,

China and Hong Kong discussed.

Launch of Marine IBA Project in Japan

• BirdLife International and Wild Bird Society of Japan (WBSJ) held a national marine IBA workshop in July 2010.

• Seabird scientists, conservationists and GIS experts learnt about marine IBAs and identified where data / gaps exist.

Marine IBA in Russia

• National marine IBA workshop in Kamchatka in 2012 • Seabird scientists identified colony information too old and should be updated• Identify marine IBAs in 2013

Marine IBAs in other countries

Marine IBAs in Malaysia, Indonesia, Philippines and Korea currently

reviewed by Partners

Suggested mIBA

Proposed mIBAby BirdLife

Marine IBA Identification: Process

Example 1:

Habitat modelling

Tracking data Kernel Analysis

Boat survey data

Expert Opinion

Hotspot / distribution at sea

Example 2:

Tracking data

Boat survey data

Literature survey

Expert Opinion

Seaward extensions around breeding colonies

Determine foraging /rafting radii

Overlay for the final marine IBA

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GIS Analysis 1: Seaward Extensions of Breeding Colonies

These extensions, which are used for feeding, maintenance behaviours and social interactions are limited by the foraging radii.

Species Max. foraging

radiusReference

Roseate Tern 18.28 BirdLife International, The Seabird Wikispacehttp://seabird.wikispaces.com/

Black-naped Tern 3 HANZAB, Vol. 3, p645

Rhinoceros Auklet 87Kato, A., Watanuki, Y. and Naito, Y. (2003)

Japanese Murrelet 8 The Auks: Alcidae (Bird Families of the World)Gaston, A. J. and Jones I. L. (1998), p270

Foraging radii

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Data AnalysisGeneralized Additive Model (GAM) to examine the environmentalfactors influencing species occurrence and develop a potential map of distribution at sea.

GIS Analysis 2: Habitat Modelling

Field SurveyConducted a boat survey bet. 2010 and 2012 to collect occurrence data of Japanese Murrelet around Izu Islands.

Explanatory variable:Chlorophyll a, SST, bathymetry, slopeand distance to colonies

Response variables:Presence/absence of murrelet

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Roseate Tern

Ref. Mizutani and Kono (2007)

Proposed marine IBAs based on foraging ranges

Terrestrial IBAs with breeding seabirds

Centre of the breeding colony

© M. Yamashiro

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Black-naped Tern

Ref. Mizutani and Kono (2007)

Proposed marine IBAs based on foraging ranges

Terrestrial IBAs with breeding seabirds

Centre of the breeding colony

© M. Yamashiro

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Japanese Murrelet 1

Ref. Hasegawa (1987), Carter et al. (2002), WBSJ (2010)

Proposed marine IBAs based on foraging ranges

Terrestrial IBAs with breeding seabirds

Centre of the breeding colony

© Y. Suzuki

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Japanese Murrelet 2

Variables in the final model:

• Chlorophyll a• Bathymetry• SST• Distance to the colony

AUC value = 0.7309

© Y. Suzuki

Potential distribution map

Probability of occurrence of the Japanese Murrelt is high in red areas, and we consider these areas as candidate marine IBAs.

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Japanese Marine IBAs

Marine e-Atlas

Marine IBAs for Flyway

© Photos by Ben Lascelles

• There are IBAs triggered by seabirds.

• Current IBAs should be reviewed and updated.

• Some BirdLife Partners have identified/ updated IBAs for seabirds, and others will do (as a part of marine IBA identification).

• Such information would be useful for those flyway priority species identified by the flyway Seabird WG and can be put into the Seabird Colony Database.