On Thu, 14 Oct 2021, Rich Shepard wrote:
Looks like the issue is with Keefer, et al. 2008.
Here's the biblatex entry for that paper:
@Article{Keefer2008,
author = {Keefer, M.L. and Boggs, C.T. and Peery, C.A. and Caudill, C.C.},
journal = {North American Journal of Fisheries Management},
title = {Overwintering Distribution, Behavior, and Survival of Adult
Summer Steelhead: Variability among Columbia River Populations},
year = {2008},
pages = {81--96},
volume = {28},
abstract = {Unlike most anadromous salmonids, summer steelhead Oncorhynchus
mykiss overwinter in rivers rather than the ocean for 6--10
months prior to spring spawning. Overwintering in rivers may
make summer steelhead more vulnerable to harvest and other
mortality sources than are other anadromous populations, but
there has been little systematic study of this life history
strategy. Here, we used a large-scale radiotelemetry study
to examine the overwintering behaviors and distributions of
26 summer steelhead stocks within the regulated lower
Columbia-Snake River hydrosystem. Over 6 years, we monitored
5,939 fish, of which 3,399 successfully reached spawning
tributaries or the upper Columbia River basin and were
assigned to specific populations. An estimated 12.\% of fish
that reached spawning areas overwintered at least partially
within the hydrosystem (annual estimates = 6.8--19.6\%),
while the remainder overwintered in tributaries. Across all
populations, later-arriving fish were more likely to
overwinter in the hydrosystem; overwintering percentages
ranged from less than 1\% for fish tagged in June to over
40\% for those tagged in October. Proportionately more
interior-basin steelhead (Clearwater, Salmon, and Snake
River metapopulations) overwintered in the hydrosystem than
did fish from lower-river populations. Steelhead were
distributed in mixed-stock assemblages throughout the
hydrosystem during winter, usually in reservoirs closest to
their home rivers but also in nonnatal tributaries.
Overwintering fish moved upstream and downstream between
reaches in all months; a nadir occurred in early January and
peak egress into spawning tributaries was in March. The
estimated survival to tributaries was higher for fish that
overwintered in the hydrosystem (82\%) than for fish that
did not (62\%); this difference was largely attributable to
low winter harvest rates. Our results suggest that large
main-stem habitats, including reservoirs, may be widely used
by overwintering summer steelhead. The complex migration
behaviors of steelhead indicate both the potential for
adaptation and possible susceptibility to future river
environment changes.},
keywords = {fish, salmon, steelhead, trout, rivers, Columbia River,
distribution, behavior, survival, adults},
}
Are the '%' symbols not correctly escaped?
Rich
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