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Workshop 3 (BIO Topic)
Integrating marine mammal populations and rates of prey consumption in
models and forecasts of climate change-ecosystem change in the North Pacific
and North Atlantic Oceans
Co-Sponsored by
ICES
Co-Convenors:
Hidehiro Kato (Japan), Begoña Santos (ICES, Spain) and
William J. Sydeman (U.S.A.)
In many marine ecosystems from
tropical to arctic waters, marine mammals are showing
considerable changes in abundance. In general, cetaceans,
recovering from historical exploitation, are increasing,
whereas some pinniped species are declining regionally,
while others are increasing. Models of marine mammal
prey consumption indicate that ~20-60% of secondary
production may be taken by these top consumers. Therefore,
marine mammals may exert «top-down» control on food
webs, as well as functioning as competitors to fish,
seabirds, and humans for mid-trophic level food resources.
One of the goals of PICES and ICES science is to enhance
forecasts of ecosystem change attributable to climate
and anthropogenic forcings. Given this goal, the workshop
will review and assess rates of marine mammal population
and prey consumption changes in the North Pacific and
North Atlantic. Presentations are invited on changes
in marine mammal abundance, distribution, diet, and
prey consumption. Discussion will focus on how to best
integrate this information into models of ecosystem
dynamics, with and without climate change and fishing
impacts.
October 27, 2009
Andrew
W. Trites (Invited)
Marine mammals in multi-species models: Assumptions, limitations and theoretical
considerations (W3-5652)
Frank
A. Parrish
Top-down pressure of foraging monk seals on subphotic fish communities;
a possible symptom of a marine mammal population at carrying capacity
(W3-5511)
(pdf,
2.4 Mb)
Rolf
Ream and Lowell Fritz
Pinniped population changes in the North Pacific: Recent trends in northern
fur seal and Steller sea lion abundance (W3-5964)
(pdf, 9 Mb, by request)
M.
Begoña Santos and Graham J. Pierce(Invited)
Integrating marine mammal populations and rates of prey consumption in
models and forecasts of climate change-ecosystem change in the North Atlantic
Ocean (W3-5779)
(pdf,
3 Mb)
Hiroshi
Okamura, Hiroshi Nagashima, and Shiroh
Yonezaki(Invited)
Quantitative assessment of impacts on the sandlance population by consumption
of minke whales (W3-5771)
Hiroto
Murase, Tsutomu Tamura, Tatsuya Isoda,
Ryosuke Okamoto, Hidehiro Kato, Shiroh Yonezaki, Hikaru Watanabe, Naoki
Tojo, Ryuichi Matsukura, Kazushi Miyashita, Hiroshi Kiwada, Koji Matsuoka,
Sigetoshi Nishiwaki, Denzo Inagake, Makoto Okazaki, Hiroshi Okamura, Yoshihiro
Fujise and Shigeyuki Kawahara
Prey preferences of common minke (Balaenoptera
acutorostrata), Bryde’s (B. edeni)
and
sei (B. borealis) whales in the western
North Pacific (W3-5724)
(pdf,
1.3 Mb)
Jarrod
A. Santora, William J. Sydeman and
Christian S. Reiss
Of whales and krill: Investigating the patch dynamics between foraging
whales and krill (W3-5725)
Valeriy
I. Fadeev
Benthos and food supply studies in feeding grounds of the Okhotsk-Korean
gray whale population off the northeast coast of Sakhalin Island (Russia),
2004-2008 (W3-5718)
(pdf,
2.8 Mb)
Kyung-Jun
Song, Zang Geun Kim, Seok-Gwan Choi,
Yong-Rock An and Chang Ik Zhang
Stomach contents of bycaught minke whales (Balaenoptera
acutorostrata) in Korean waters
(W3-5853)
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