Search Results - "Ammann, Arnold J."

Nonlinear survival of imperiled fish informs managed flows in a highly modified river by Michel, Cyril J., Notch, Jeremy J., Cordoleani, Flora, Ammann, Arnold J., Danner, Eric M.

“…Water is a fundamental resource in freshwater ecosystems, and streamflow plays a pivotal role in driving riverine ecology and biodiversity. Ecologically…”
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The effects of surgically implanted acoustic transmitters on laboratory growth, survival and tag retention in hatchery yearling Chinook salmon by Ammann, Arnold J., Michel, Cyril J., MacFarlane, R. Bruce

“…Telemetry has proven an effective means for studying the movement of fishes, however, biases associated with tagged animals requires careful scrutiny if…”
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The effects of water temperature, acoustic tag type, size at tagging, and surgeon experience on juvenile Chinook salmon (Oncorhynchus tshawytscha) tag retention and growth by Robinson, Rebecca R, Notch, Jeremy, McHuron, Alex, Logston, Renae, Pham, Tom, Ammann, Arnold J

“…Abstract Background Acoustic telemetry is a widely used tool to study the movement and survival of juvenile fish and often requires a surgical procedure to…”
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Factors affecting detection probability and range of transmitters and receivers designed for the Juvenile Salmon Acoustic Telemetry System by Ammann, Arnold J.

“…Acoustic telemetry allows collection of data on the movement and survival of fish and other aquatic organisms. The passive form of this technology uses…”
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Real-time nodes permit adaptive management of endangered species of fishes by Klimley, A. Peter, Agosta, Thomas V, Ammann, Arnold J, Battleson, Ryan D, Pagel, Matthew D, Thomas, Michael J

“…Background Currently acoustic tag-detecting autonomous receivers must be visited periodically to download the files of tag detections. Hence, the information…”
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Effect of release timing on apparent survival of juvenile fall run Chinook Salmon from Coleman National Fish Hatchery by Zeug, Steven C., Null, Robert, Brodsky, Annie, Johnston, Myfanwy, Ammann, Arnold J.

“…Hatchery production of Pacific salmon for release into the environment is a common tool for conservation and supplementation of depleted stocks. Hatchery…”
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Triennial migration and philopatry in the critically endangered soupfin shark Galeorhinus galeus by Nosal, Andrew P., Cartamil, Daniel P., Ammann, Arnold J., Bellquist, Lyall F., Ben‐Aderet, Noah J., Blincow, Kayla M., Burns, Echelle S., Chapman, Eric D., Freedman, Ryan M., Klimley, A. Peter, Logan, Ryan K., Lowe, Christopher G., Semmens, Brice X., White, Connor F., Hastings, Philip A.

“…Globally, one quarter of shark and ray species are threatened with extinction due to overfishing. Effective conservation and management can facilitate…”
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Outmigration survival of wild Chinook salmon smolts through the Sacramento River during historic drought and high water conditions by Notch, Jeremy J., McHuron, Alex S., Michel, Cyril J., Cordoleani, Flora, Johnson, Matt, Henderson, Mark J., Ammann, Arnold J.

“…Populations of wild spring-run Chinook salmon in California’s Central Valley, once numbering in the millions, have dramatically declined to record low numbers…”
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Historic drought influences outmigration dynamics of juvenile fall and spring-run Chinook Salmon by Singer, Gabriel P, Chapman, Eric D., Ammann, Arnold J., Klimley, A. Peter, Rypel, Andrew L., Fangue, Nann A.

“…Riverine ecosystems around the world have undergone extensive anthropogenic alterations, often to the detriment of native aquatic biodiversity. Migratory…”
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California Current seascape influences juvenile salmon foraging ecology at multiple scales by Sabal, Megan C., Hazen, Elliott L., Bograd, Steven J., MacFarlane, R. Bruce, Schroeder, Isaac D., Hayes, Sean A., Harding, Jeffrey A., Scales, Kylie L., Miller, Peter I., Ammann, Arnold J., Wells, Brian K.

“…Juvenile salmon Oncorhynchus spp. experience variable mortality rates during their first few months in the ocean, and high growth during this period is…”
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Low river survival of juvenile steelhead in the Sacramento River watershed by Sandstrom, Philip Thomas, Ammann, Arnold J., Michel, Cyril, Singer, Gabriel, Chapman, Eric D., MacFarlane, Robert Bruce, Lindley, Steven T., Klimley, Abbott Peter

“…Steelhead ( Oncorhynchus mykiss ) are a species of conservation concern in California’s Sacramento River, and their poor status is hypothesized to be due in…”
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Diel movements of out-migrating Chinook salmon (Oncorhynchus tshawytscha) and steelhead trout (Oncorhynchus mykiss) smolts in the Sacramento/San Joaquin watershed by Chapman, Eric D., Hearn, Alex R., Michel, Cyril J., Ammann, Arnold J., Lindley, Steven T., Thomas, Michael J., Sandstrom, Philip T., Singer, Gabriel P., Peterson, Matthew L., MacFarlane, R. Bruce, Klimley, A. Peter

“…We used ultrasonic telemetry to describe the movement patterns of late-fall run Chinook salmon ( Oncorhynchus tshawytscha ) and steelhead trout ( O. mykiss )…”
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The effects of environmental factors on the migratory movement patterns of Sacramento River yearling late-fall run Chinook salmon (Oncorhynchus tshawytscha) by Michel, Cyril J., Ammann, Arnold J., Chapman, Eric D., Sandstrom, Philip T., Fish, Heidi E., Thomas, Michael J., Singer, Gabriel P., Lindley, Steven T., Klimley, A. Peter, MacFarlane, R. Bruce

“…Understanding smolt migration dynamics is a critical step in the preservation and conservation of imperiled salmonids in California’s Sacramento River system…”
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SMURFs: standard monitoring units for the recruitment of temperate reef fishes by Ammann, Arnold J

“…I evaluated a standard monitoring unit for the recruitment of reef fishes (SMURF) as a tool for ascertaining spatial and temporal patterns of reef fish…”
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Early ocean distribution of juvenile Chinook salmon in an upwelling ecosystem by Hassrick, Jason L, Henderson, Mark J, Huff, David D, Sydeman, William J, Sabal, Megan C, Harding, Jeffrey A, Ammann, Arnold J, Crandall, Eric D, Bjorkstedt, Eric P, Garza, John Carlos, Hayes, Sean A

“…Extreme variability in abundance of California salmon populations is often ascribed to ocean conditions, yet relatively little is known about their marine life…”
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Regional and seasonal patterns of epipelagic fish assemblages from the central California Current by Harding, Jeffrey A, Ammann, Arnold J, MacFarlane, R. Bruce

“…The coastal Pacific Ocean off northern and central California encompasses the strongest seasonal upwelling zone in the California Current ecosystem. Headlands…”
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Steelhead Growth in a Small Central California Watershed: Upstream and Estuarine Rearing Patterns by Hayes, Sean A., Bond, Morgan H., Hanson, Chad V., Freund, Ellen V., Smith, Jerry J., Anderson, Eric C., Ammann, Arnold J., MacFarlane, R. Bruce

“…We monitored growth and life history pathways of juvenile steelhead Oncorhynchus mykiss and compared growth rates between the upper watershed and estuary in…”
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Factors Affecting Spatiotemporal Variation in Survival of Endangered Winter‐Run Chinook Salmon Out‐migrating from the Sacramento River by Hassrick, Jason L., Ammann, Arnold J., Perry, Russell W., John, Sara N., Daniels, Miles E.

“…Among four extant and declining runs of Chinook Salmon Oncorhynchus tshawytscha in California’s Central Valley, none has declined as precipitously as the…”
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Movement and Survival of Wild Chinook Salmon Smolts from Butte Creek During Their Out‐Migration to the Ocean: Comparison of a Dry Year versus a Wet Year by Cordoleani, Flora, Notch, Jeremy, McHuron, Alex S., Ammann, Arnold J., Michel, Cyril J.

“…California's Central Valley (CCV) Chinook Salmon Oncorhynchus tshawytscha stocks have declined substantially since the mid‐1800s, with most listed as…”
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The effects of surgically implanted acoustic transmitters on laboratory growth, survival and tag retention in hatchery yearling Chinook salmon: Electronic Tagging Studies of Salmonid Migration by AMMANN, Arnold J, MICHEL, Cyril J, MACFARLANE, R. Bruce

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