scholarly journals Historical records reveal changes to the migration timing and abundance of Winter Steelhead ( Oncorhynchus mykiss ) in Olympic Peninsula rivers, Washington State, USA

2021 ◽  
Author(s):  
John R. McMillan ◽  
Matthew R. Sloat ◽  
Martin Liermann ◽  
George Pess
Keyword(s):  
Oncorhynchus Mykiss ◽  
Washington State ◽  
Historical Records ◽  
Olympic Peninsula ◽  
Migration Timing

scholarly journals A new milliped of the genus Stenozonium Shelley 1998 from Washington State, U. S. A.: first record of the genus and family from North of the Columbia River (Polyzoniida: Polyzoniidae)

Zootaxa ◽  
2005 ◽  
Vol 1017 (1) ◽  
pp. 25
Author(s):  
ROWLAND M. SHELLEY ◽  
WILLIAM A. SHEAR
Keyword(s):  
New Species ◽  
North America ◽  
Columbia River ◽  
First Record ◽  
Washington State ◽  
Western North America ◽  
Olympic Peninsula

The new species, Stenozonium leonardi, the northernmost representative of the Polyzoniidae in western North America and the only one north of the Columbia River, is described from the Olympic Peninsula of Washington; it is isolated by some 180 mi (288 km) from S. benedictae Shelley, 1998, in coastal Oregon. Stenozonium alone among the four polyzoniidan genera in western North America consists of entirely allopatric and widely separated species, with one apiece in California, Oregon, and Washington-evidence that it diversified earlier than its ordinal counterparts.

scholarly journals Steelhead ( Oncorhynchus mykiss ) lineages and sexes show variable patterns of association of adult migration timing and age‐at‐maturity traits with two genomic regions

2020 ◽  
Vol 13 (10) ◽  
pp. 2836-2856
Author(s):  
Stuart C. Willis ◽  
Jon E. Hess ◽  
Jeff K. Fryer ◽  
John M. Whiteaker ◽  
Chris Brun ◽  
...  
Keyword(s):  
Oncorhynchus Mykiss ◽  
Age At Maturity ◽  
Migration Timing ◽  
Genomic Regions

Large-scale freshwater habitat features influence the degree of anadromy in eight Hood Canal Oncorhynchus mykiss populations

2013 ◽  
Vol 70 (5) ◽  
pp. 756-765 ◽  
Author(s):  
Barry A. Berejikian ◽  
Lance A. Campbell ◽  
Megan E. Moore
Keyword(s):  
Oncorhynchus Mykiss ◽  
Large Scale ◽  
Low Flow ◽  
Stream Habitat ◽  
Olympic Peninsula ◽  
Logistic Regression Models ◽  
Habitat Features ◽  
Freshwater Streams ◽  
Hood Canal ◽  
Anadromous Migration

Juvenile Oncorhynchus mykiss maternity was determined from otolith strontium:calcium ratios to investigate the degree of anadromy in eight freshwater streams draining to a common fjord. The percentages of O. mykiss parr produced by anadromous females ranged from an annual average of 41.3% (Hamma Hamma River) to 100% (Dewatto River). The proportion of stream habitat available to resident O. mykiss upstream of barriers to anadromous migration explained a significant portion of the variability in maternal life history below barrier falls and was included in each of the five logistic regression models with the lowest AIC scores. Transitional hydrologic profiles, low mean annual temperatures and high mean annual stream flow, common to Olympic Peninsula streams, were each associated with greater proportions of offspring from resident females. Only 2 out of 234 parr from the lowland, rain-driven, low-flow streams of the Kitsap Peninsula were produced by resident females. Thus, large-scale habitat features, and primarily the presence or absence of resident populations above natural barriers to anadromous migration, appeared to shape the degree of anadromy among populations.

Behavioral thermoregulation and associated mortality trade-offs in migrating adult steelhead (Oncorhynchus mykiss): variability among sympatric populations

2009 ◽  
Vol 66 (10) ◽  
pp. 1734-1747 ◽  
Author(s):  
Matthew L. Keefer ◽  
Christopher A. Peery ◽  
Brett High
Keyword(s):  
Oncorhynchus Mykiss ◽  
Columbia River ◽  
Main Stem ◽  
Behavioral Thermoregulation ◽  
Temperature Threshold ◽  
Sympatric Populations ◽  
Thermal Refugia ◽  
Migration Timing ◽  
Trade Offs ◽  
Physiological Benefits

We used radiotelemetry to assess thermoregulatory behaviors for 14 populations (n = 3985) of adult summer steelhead ( Oncorhynchus mykiss ) as they passed through the Columbia River migration corridor. Steelhead use of small cool-water tributaries (“thermal refugia”) rapidly increased when the Columbia River reached a temperature threshold of about 19 °C. When main stem temperatures were warmest (i.e., >21 °C), more than 70% of the tagged fish used refugia sites and these fish had median refugia residence times of 3–4 weeks. Thermoregulatory responses were similar across populations, but there were large among-population differences in the incidence and duration of refugia use likely linked to population-specific migration timing patterns. In survival analyses using 1285 known-origin steelhead, fish that used thermal refugia were significantly less likely to survive to natal basins, were harvested at relatively high rates in refugia tributaries, and had greater unknown mortality in the main stem. These results highlight the trade-off between the presumed physiological benefits of thermal refugia use and a likely increase in harvest and other mortality risks that arise when preferred thermal habitats are severely constricted.

Ionic and trace element composition of cloud water collected on the Olympic Peninsula of Washington State

1997 ◽  
Vol 31 (13) ◽  
pp. 1991-2001 ◽  
Author(s):  
Richard J. Vong ◽  
Bradly M. Baker ◽  
Fredrick J. Brechtel ◽  
Robert T. Collier ◽  
Joyce M. Harris ◽  
...  
Keyword(s):  
Trace Element ◽  
Trace Element Composition ◽  
Cloud Water ◽  
Washington State ◽  
Element Composition ◽  
Olympic Peninsula

Opportunistic Whale Hunting on the Southern Northwest Coast: Ancient DNA, Artifact, and Ethnographic Evidence

2007 ◽  
Vol 72 (4) ◽  
pp. 657-676 ◽  
Author(s):  
Robert J. Losey ◽  
Dongya Y. Yang
Keyword(s):  
North America ◽  
Ancient Dna ◽  
Cervus Elaphus ◽  
Washington State ◽  
Northwest Coast ◽  
Olympic Peninsula ◽  
The West ◽  
Oregon Coast ◽  
The Past ◽  
Coast Site

Two modes of whale use have been documented on the Northwest Coast of North America, namely systematic whale hunting and whale scavenging. Ethnographically, systematic hunting was practiced only by Native groups of southwestern Vancouver Island and the northern Olympic Peninsula of Washington State. This hunting was undertaken with technology specifically designed for the task. Other groups on the Northwest Coast reportedly did not hunt whales but did utilize beached animals. Here we present archaeological evidence of whaling from the northern Oregon coast site of Par-Tee in the form of a bone point lodged in a whale phalange. This hunting likely occurred 1,300 to 1,600 years ago. Ancient DNA extracted from the phalange proves it to be a humpback whale (Megaptera novaeangliae). DNA recovered from the bone point indicates that it is made from elk (Cervus elaphus) bone, and the point's DNA sequence is identical to that from unmodified elk bone from Par-Tee, suggesting the whale was locally hunted. We present ethnohistoric data from the southern Northwest Coast describing opportunistic whale hunting with a variety of technologies. We argue that many groups along the west coast of North America likely occasionally hunted whales in the past and that this hunting occurred using nonspecialized technologies.

scholarly journals Ecohydrological characteristics of a newly identified coastal raised bog on the western Olympic Peninsula, Washington State, USA

Ecohydrology ◽  
2021 ◽  
Author(s):  
F. Joseph Rocchio ◽  
Edward Gage ◽  
Tynan Ramm‐Granberg ◽  
Andrea K. Borkenhagen ◽  
David J. Cooper
Keyword(s):  
Washington State ◽  
Raised Bog ◽  
Olympic Peninsula
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