The nugget. (Sisters, Or.) 1994-current, August 01, 2018, Page 39, Image 38

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    Wednesday, August 1, 2018 The Nugget Newspaper, Sisters, Oregon
39
‘Resource surfing’ bears eat tons of fish
Zagster
bike share
program in
Bend will
expand
again
Findings were just pub-
lished in Scientific Reports.
“This study is the first to
link actual metrics of bear
consumption to their for-
aging behavior and move-
ments,” said co-author
Jonathan Armstrong, assis-
tant professor of fisheries
and wildlife in the Oregon
State University College of
Agricultural Sciences.
Armstrong collaborated
with corresponding author
Will Deacy and scientists
from the University of
Montana, Washington State
University and the Kodiak
National Wildlife Refuge to
collar 33 female bears and
track them for a year over a
1-million-square-kilometer
portion of Kodiak Island.
At the end of those 12
months, the team recaptured
18 of the bears and took hair
samples that they measured
for mercury. Salmon absorb
mercury from what they eat
in the ocean, and the amount
of mercury in a bear’s hair
By Steve Lundeberg
Correspondent
By Christine Coffin
Correspondent
BEND – A year after it
expanded for public use, the
Zagster bike share program
launched by Oregon State
University-Cascades will
expand again, adding two
new bike stations in Bend.
The additional stations are
located in Bend’s downtown
area.
With the station additions
the bike share system has
grown to 55 bikes and eight
stations.
A celebration to officially
open the new stations took
place at noon on July 30 at
one of the stations located
on NW Galveston Avenue,
between 12th Street and
Federal Avenue.
The newest stations were
made possible with sponsor-
ship from 10 Barrel Brewing
Company and SELCO
Community Credit Union.
The second station is
located at the north end of
downtown Bend on the south-
west corner of the Newport
Avenue and Wall Street
intersection.
10 Barrel and SELCO
join partners G5, Visit Bend,
and the Old Mill District in
supporting the bike share
program.
The program launched
for the OSU-Cascades cam-
pus community in the fall of
2016 with 30 bikes at three
stations on and near the cam-
pus. The addition of private
sponsors in June 2017 made
expansion to the public pos-
sible and since then the pro-
gram has gained more than
1,800 active members and
recorded 4,900 user trips.
Year-to-date, rides have
more than doubled com-
pared to the same period in
2017.
With additional sponsors,
university officials hope
to expand the bike share
program to the east side of
Bend.
Members of the pub-
lic age 18 or older can join
the program via the Zagster
app or at www.zagster.com/
bend. A new pay-as-you-go
option offers 30-minute trips
– a typical trip length – for
$1.50.
CORVALLIS – Research
shows that Kodiak brown
bears that sync their stream-
to-stream movements to
salmon spawning patterns eat
longer and more than bears
that don’t, with one bear in
the study consuming more
than two tons of fish in one
summer.
Individual sockeye
salmon populations spawn
for about 40 days, but
“resource surfing” bears can
fish for three times that long,
biologists have learned.
Worldwide, prolonged
salmon availability is
increasingly under threat
from hatchery supplemen-
tation that tends to reduce
the genetic diversity under-
pinning different spawning
times. In addition, bears’
ability to follow salmon
waves is hampered by indus-
trial development such as
mining.
indicates how much fish it
dined on – the more mercury,
the more salmon it ate.
“Salmon consumption
ranged from around 300
kilograms for one bear up to
almost 2,000 kilograms for
the biggest salmon eater,”
said Deacy, a postdoctoral
scholar at OSU. “This study
complements our other
research to show how bears
depend on diverse salmon
populations.”
On average, the bears
in the study ate more than
1,000 kilograms of salmon
apiece, and the more fishing
sites a bear visited, the more
time it spent fishing. Salmon
originating from different
streams return from sea to
spawn at different times,
making resource surfing
possible.
“Results suggest that
in intact watersheds with
abundant salmon runs, year-
to-year variation in salmon
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numbers likely has less
effect on salmon consump-
tion than individual variation
in bear foraging behavior,”
Deacy said. “A remaining
challenge is to understand
the drivers of that individual
variation.”
Supporting this research
were the U.S. Fish and
Wildlife Service, the Flathead
Lake Biological Station, the
OSU Department of Fisheries
and Wildlife, the Interagency
Grizzly Bear Committee, and
the Raili Korkka Brown Bear
Endowment, Nutritional
Ecology Endowment
and Bear Research and
Conservation Endowment at
Washington State.
Collaborators included
Jack Stanford of Montana,
Charles Robbins and Joy
Erlenbach of Washington
State, and William Leacock
of the Kodiak refuge, who
did the bear collaring and
tracking.
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