Assessment of Vessel Disturbance to Gray Whales to Inform Sustainable Ecotourism

Ecotourism is a movement that seeks to sustain local communities by uniting conservation, travel and education. To minimize the effects on animal behavior, ecotourism operations must be carefully managed. Local management efforts that can be tailored to the specific area and animals may be more successful than broad-scale efforts that may be unknown to users of the environment, or inappropriate for the species.

Range expansion of tropical pyrosomes in the northest Pacific Ocean

This paper discusses that appearance of pyrosomes (P. atlanticum) in coastal waters near northern California, Oregon, and Washington north of their previously reported range since 2014. By the summer of 2017, pyrosomes appeared in unprecedented numbers along the entire west coast, reaching the Western Gulf of Alaska, but showed some of their highest abundances off Oregon clogging nets and disrupting marine activities such as commercial and sport fisheries.

Macrophyte wrack on sandy beaches of the US Pacific Northwest is linked to proximity of source habitat, ocean upwelling, and beach morphology

Marine macrophyte wrack (macroalgae and seagrasses) frequently washes onto beaches but little is known about the factors controlling its biogeographic variability. This research reports on a large-scale study of macrophyte wrack deposition patterns on the U.S. Pacific Northwest coast. Researchers measured macrophyte wrack on 12 sandy beach sites from southern Washington to northern California.

Delayed effects of capture-induced barotrauma on physical condition and behavioral competency of recompressed yelloweye rockfish, Sebastes ruberrimus

Rebuilding of some U.S. West Coast rockfish (Sebastes spp.) stocks relies heavily on mandatory fisherydiscard, however the long-term condition of discarded fish experiencing capture-related barotraumais unknown. We conducted two studies designed to evaluate delayed mortality, physical condition,and behavioral competency of yelloweye rockfish, Sebastes ruberrimus, experiencing barotrauma dur-ing capture followed by recompression (assisted return to depth of capture).

Juvenile coho salmon movement, growth and survival in a coastal basin of southern Oregon

Juvenile salmonids display highly variable spatial and temporal patterns of early dispersal that are influenced by density‐dependent and density‐independent factors. Although juvenile coho salmon (Oncorhynchus kisutch) movement patterns in streams and their relationship with body mass and growth have been examined in previous studies, most observations were limited to one season or one stream section.

Agricultural land use and macroinvertebra​te assemblages in lowland temporary streams of the Willamette Valley, Oregon, USA

Streams that dry during part of the year are common throughout the world, yet studies of themacroinverte​brate assemblages in these types of streams are rare compared to those in permanentstream​s; and studies that assess the effects of agriculture on temporary stream invertebrates are evenrarer. We studied macroinvertebra​te assemblages in lowland temporary streams of a region with highagricultura​l land use, the southern Willamette Valley, Oregon, USA. Overall assemblages were dominatedby non-insects, and invertebrates tolerant of organic pollution.

Classification of Animal Movement Behavior through Residence in Space and Time

Identification and classification of behavior states in animal movement data can be complex, temporally biased, time-intensive, scale-​dependent, and unstandardized across studies and taxa. Large movement datasets are increasingly common and there is a need for efficient methods of data exploration that adjust to the individual variability of each track. We present the Residence in Space and Time (RST) method to classify behavior patterns in movement data based on the concept that behavior states can be partitioned by the amount of space and time occupied in an area of constant scale.

Tracking reveals limited interactions between Campbell Albatross and fisheries during the breeding season

Fisheries-related mortality has been influential in driving global declines in seabird populations. Understanding the overlap between seabird distribution and fisheries is one important element in assessing bycatch risk, and may be achieved by tracking the movements of individual birds and fishing vessels. Here, researchers assess the spatiotemporal overlap between the vulnerable Campbell Albatross Thalassarche impavida and large ([28 m) commercial fishing boats in New Zealand’s Exclusive Economic Zone (EEZ).