Seabird Ecology What Can Seabird Barf Tell Us? Presentation #1 By Kristin McCully All images from Kristin McCully unless otherwise labeled.

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Presentation transcript:

Seabird Ecology What Can Seabird Barf Tell Us? Presentation #1 By Kristin McCully All images from Kristin McCully unless otherwise labeled

Where is Midway? Hawaiian islands Pacific Ocean Watsonville

Where is Midway? NOAA

Midway Atoll Keith Castellano

Midway’s Coral Reefs

Midway’s Birds Endangered Laysan duck with ducklings Red-tailed tropic bird White tern Red-footed booby with chick Sooty tern Brown booby Bonin petrel

Midway Albatrosses Laysan Albatross Phoebastria immutablis Black-footed Albatross Phoebastria nigripes Short-Tailed Albatross Phoebastria albatrus *Endangered*

Albatross Life Cycle Pete Leary JanSepOctNovDecMayJunJulAugFebMarApr

Albatross Life Cycle Pete Leary JanSepOctNovDecMayJunJulAugFebMarApr

Albatross Life Cycle Pete Leary JanSepOctNovDecMayJunJulAugFebMarApr

Albatross Life Cycle Pete Leary JanSepOctNovDecMayJunJulAugFebMarApr

Albatross Life Cycle Pete Leary JanSepOctNovDecMayJunJulAugFebMarApr

Albatross Life Cycle Pete Leary JanSepOctNovDecMayJunJulAugFebMarApr Fledge Fledging

Albatross Range Pete Leary Young et al PLoS One

Threats to Albatross Populations Longline fishing Lead poisoning Introduced mammals kill eggs, chicks, adults and destroy habitat Poaching for eggs & feathers in 1800s Longline diagram - centre/teachers-and-students/about-fishing-methods-and- devices/longlines/pelagic-longline/ centre/teachers-and-students/about-fishing-methods-and- devices/longlines/pelagic-longline/ Streamer line - rds/page/2/ rds/page/2/ Albatross caught on longline - tm Albatross egg poaching wisdom-returns-to-midway-atoll tm wisdom-returns-to-midway-atoll Monterey Bay Aquarium W.A. Bryan, courtesy of the University of Hawaii

Albatross Videos Laysan albatross feeding chick: eature=player_embedded&v=S83T P_iaEg8 eature=player_embedded&v=S83T P_iaEg8 Chick regurgitating bolus from onos/ / onos/ / Laysan albatross courtship: eature=player_embedded&v=Yvp HBALOCAI eature=player_embedded&v=Yvp HBALOCAI Blackfooted albatross courtship: eature=player_embedded&v=8qYC CbgKzgM#! eature=player_embedded&v=8qYC CbgKzgM#!

Collecting Boluses

Impacts of Marine Debris What Can Seabird Barf Tell Us? Presentation #2 Kristin McCully

Ingestion Gregory 2009

Entanglement

Other Impacts of Marine Debris Ghost-fishing = fishing nets continue to catch fish long after being abandoned Transport of exotic species Human health risks Economic impacts State of Hawaii FAO Ocean Conservancy

Pacific “Garbage Patches”

How Can We Reduce Marine Debris? Average American uses 500 plastic bags per year!! (chicobags.com) NOAA Marine Debris Program