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Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini

Creator:: Dayton, Paul K., Kim, Stacy, Jarrell, Shannon C., Oliver, John S., Hammerstrom, Kamille, Fisher, Jennifer L., O'Connor, Kevin, Barber, Julie S., Robilliard, Gordon, Barry, James, Thurber, Andrew R., and Conlan, Kathy
Abstract:: Polar ecosystems are sensitive to climate forcing, and we often lack baselines to evaluate changes. Here we report a nearly 50-year study in which a sudden shift in the population dynamics of an ecologically important, structure-forming hexactinellid sponge, Anoxycalyx joubini was observed. This is the largest Antarctic sponge, with individuals...
Resource Type:: Article
Full Text:: States of America, 3 Hatfield Marine Science Center, Newport, Oregon, United States of America, 4

Density Can Be Misleading for Low-Density Species: Benefits of Passive Acoustic Monitoring

Creator:: Rogers, Tracey L., Ciaglia, Michaela B., Klinck, Holger, and Southwell, Colin
Abstract:: Climate-induced changes may be more substantial within the marine environment, where following ecological change is logistically difficult, and typically expensive. As marine animals tend to produce stereotyped, long-range signals, they are ideal for repeatable surveying. In this study we illustrate the potential for calling rates to be used as a...
Resource Type:: Article
Full Text:: , Hatfield Marine Science Center, Newport, Oregon, United States of America, 3 Australian Antarctic Division

Circumpolar Diversity and Geographic Differentiation of mtDNA in the Critically Endangered Antarctic Blue Whale (Balaenoptera musculus intermedia)

Creator:: Sremba, Angela L., Hancock-Hanser, Brittany, Branch, Trevor A., LeDuc, Rick L., and Baker, C. Scott
Abstract:: The Antarctic blue whale (Balaenoptera musculus intermedia) was hunted to near extinction between 1904 and 1972, declining from an estimated initial abundance of more than 250,000 to fewer than 400. Here, we describe mtDNA control region diversity and geographic differentiation in the surviving population of the Antarctic blue whale, using...
Resource Type:: Article
Full Text:: Hatfield Marine Science Center Mamie Markham Research Award and the Marine Mammal Institute. The funders

Near-Real-Time Acoustic Monitoring of Beaked Whales and Other Cetaceans Using a Seaglider (TM)

Creator:: Klinck, Holger, Mellinger, David K., Klinck, Karolin, Bogue, Neil M., Luby, James C., Jump, William A., Shilling, Geoffrey B., Litchendorf, Trina, Wood, Angela S., Schorr, Gregory S., and Baird, Robin W.
Abstract:: Correction 10 Aug 2012: Klinck H, Mellinger DK, Klinck K, Bogue NM, Luby JC, et al. (2012) Correction: Near-Real-Time Acoustic Monitoring of Beaked Whales and Other Cetaceans Using a Seaglider™. PLOS ONE 7(8): 10.1371/annotation/57ad0b82-87c4-472d-b90b-b9c6f84947f8.
Resource Type:: Article
Full Text:: Marine Science Center, Cooperative Institute for Marine Resources Studies, Oregon State University

Evidence that summer jellyfish blooms impact Pacific Northwest salmon production

Creator:: Ruzicka, James J., Daly, Elizabeth A., and Brodeur, Richard D.
Abstract:: Interannual variability in salmon (Oncorhynchus spp.) production in the northeast Pacific is understood to be driven by oceanographic variability and bottom-up processes affecting prey availability to juvenile salmon. Scyphozoan jellyfish have an important role in shaping the pathways of energy flow through pelagic food webs. While jellyfish obtain high production...
Resource Type:: Article

A bioenergetics model to evaluate demographic consequences of disturbance in marine mammals applied to gray whales

Creator:: Villegas-Amtmann, S., Schwarz, L. K., Sumich, J. L., and Costa, D. P.
Abstract:: While sophisticated tools are used to monitor behavioral changes of large marine vertebrates, determining whether these changes are meaningful for management and conservation is challenging. The Population Consequences of Disturbance model proposed a bioenergetics model to detect biologically meaningful population responses, where disturbance costs are linked to lost energy. The...
Resource Type:: Article
Full Text:: , California 95060 USA 2Hatfield Marine Science Center, Oregon State University, Newport, Oregon 97365 USA

Genetic Identification of Chinook Salmon: Stock-Specific Distributions of Juveniles along the Washington and Oregon Coasts

Creator:: Teel, David J., Burke, Brian J., Kuligowski, David R., Morgan, Cheryl A., and Van Doornik, Donald M.
Abstract:: We used microsatellite DNA data and genetic stock identification methods to delineate the temporal and spatial distributions of juvenile Chinook Salmon Oncorhynchus tshawytscha occupying coastal habitats extending from central Oregon to northern Washington. Juveniles were collected in trawl surveys conducted during spring, summer, and autumn over 15 years. Distributions (mean...
Resource Type:: Article

Assessing the design and power of capture-recapture studies to estimate demographic parameters for the Endangered Oceania humpback whale population

Creator:: Carroll, E. L., Brooks, L., Baker, C. S., Burns, D., Garrigue, C., Hauser, N., Jackson, J. A., Poole, M. M., and Fewster, R. M.
Abstract:: Capture-recapture studies offer a powerful tool to assess abundance, survival and population rate of change (λ). A previous capture-recapture study, based on DNA profiles, estimated that the IUCN-listed Endangered Oceania population of humpback whales had a superpopulation size of 4329 whales (95% confidence limits, CL: 3345, 5315) and λ =...
Resource Type:: Article

Long-term individual sighting history database: an effective tool to monitor satellite tag effects on cetaceans

Creator:: Gendron, D., Serrano, I. Martinez, de la Cruz, A. Ugalde, Calambokidis, J., and Mate, B.
Abstract:: During the last 3 decades, tagging technology has been used to study different aspects of cetacean ecology. Tags implanted in animal’s blubber, muscle and surrounding tissue have produced successful results, providing information on long-term movements. However, apart from the reports of ‘divots’ (depressions) and swelling at the tag sites in...
Resource Type:: Article
Full Text:: Marine Science Center, Newport, Oregon 97365, USA ABSTRACT: During the last 3 decades, tagging

Critically low abundance and limits to human-related mortality for the Maui's dolphin

Creator:: Hamner, Rebecca M., Wade, Paul, Oremus, Marc, Stanley, Martin, Brown, Phillip, Constantine, Rochelle, and Baker, C. Scott
Abstract:: The New Zealand endemic Maui’s dolphin Cephalorhynchus hectori maui is characterized by several life history traits thought to be important predictors of extinction risk in marine mammals, including a slow rate of reproduction, small geographic range, small group size, and coastal distribution. We continued the genetic monitoring of the remnant...
Resource Type:: Article
Full Text:: Science Center, 2030 SE Marine Science Drive, Newport, Oregon 97365, USA 2School of Biological Sciences

ScholarsArchive@OSU

Recruitment, Growth and Mortality of an Antarctic Hexactinellid Sponge, Anoxycalyx joubini

Density Can Be Misleading for Low-Density Species: Benefits of Passive Acoustic Monitoring

Circumpolar Diversity and Geographic Differentiation of mtDNA in the Critically Endangered Antarctic Blue Whale (Balaenoptera musculus intermedia)

Near-Real-Time Acoustic Monitoring of Beaked Whales and Other Cetaceans Using a Seaglider (TM)

Evidence that summer jellyfish blooms impact Pacific Northwest salmon production

A bioenergetics model to evaluate demographic consequences of disturbance in marine mammals applied to gray whales

Genetic Identification of Chinook Salmon: Stock-Specific Distributions of Juveniles along the Washington and Oregon Coasts

Assessing the design and power of capture-recapture studies to estimate demographic parameters for the Endangered Oceania humpback whale population

Long-term individual sighting history database: an effective tool to monitor satellite tag effects on cetaceans

Critically low abundance and limits to human-related mortality for the Maui's dolphin

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