Caspian Tern (Hydroprogne caspia)

Cuthbert, Francesca J.; Wires, Linda R.; Poole, A.; Gill, F.

doi:10.2173/bna.403

Cited by 38 publications

(37 citation statements)

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“…Five islands (Islands 11 and 12 in Pond A16; Islands 12, 17, and 21 in Pond SF2) each received 50-115 Caspian tern decoys arranged in the interior of each island, and spaced 1-1.5 m apart (table 1, figs. 4-6), which is the nest spacing commonly observed in Caspian tern colonies (Cuthbert and Wires, 1999). The number of decoys increased in later years as the manufacturer (Mad River Decoy, Waitsfield, Vermont) completed and delivered new decoys, and as more old decoys became available from partner agencies.…”

Section: Social Attraction Measures For Caspian Terns and Snowy Ploversmentioning

confidence: 99%

“…If not, we used the survey date closest to 40 days before and after the peak date. We selected this 40-day interval because each nest typically can be active for about 40 daysCaspian tern females lay 1-3 eggs with 2-3 days between laying each egg, incubate eggs over a 27-day period, and brood small chicks for 1 week post-hatch (Cuthbert and Wires 1999). Thus, nests active 40 days prior to and 40 days after the date the peak number of nests was observed would represent additional nests that would not have been active during the peak count.…”

Section: Estimating Colony Size and Productivity Of Caspian Ternsmentioning

confidence: 99%

“…Because Caspian terns may renest (lay a second clutch of eggs) following an unsuccessful first nesting attempt (Cuthbert and Wires, 1999), some late renests likely were included as new nests in estimating the number of breeding pairs. However, because we applied the same procedure to estimate the number of breeding pairs, the number of fledglings, and breeding success in all years, we could effectively determine the relative change in these measures among years.…”

Section: Estimating Colony Size and Productivity Of Caspian Ternsmentioning

confidence: 99%

See 2 more Smart Citations

Social attraction used to establish Caspian tern (Hydroprogne caspia) nesting colonies on modified islands at the Don Edwards San Francisco Bay National Wildlife Refuge, California—Final report

Hartman¹,

Ackerman²,

Herzog³

et al. 2018

Open-File Report

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Section: Social Attraction Measures For Caspian Terns and Snowy Ploversmentioning

confidence: 99%

Section: Estimating Colony Size and Productivity Of Caspian Ternsmentioning

confidence: 99%

Section: Estimating Colony Size and Productivity Of Caspian Ternsmentioning

confidence: 99%

See 1 more Smart Citation

Social attraction used to establish Caspian tern (Hydroprogne caspia) nesting colonies on modified islands at the Don Edwards San Francisco Bay National Wildlife Refuge, California—Final report

Hartman¹,

Ackerman²,

Herzog³

et al. 2018

Open-File Report

View full text Add to dashboard Cite

“…Five islands (Islands 11 and 12 in Pond A16; Islands 12, 17, and 21 in Pond SF2) each received 105 Caspian tern decoys arranged in the interior of each island, and spaced 1-1.5 m apart (table 1, figs. 4-6), which is the nest spacing commonly observed in Caspian tern colonies (Cuthbert and Wires, 1999). The remaining two islands (Island 3 in Pond A16; Island 10 in Pond SF2) each received six snowy plover decoys, arranged in male-female pairs at three locations on the island ( fig.…”

Section: Social Attraction Measures For Caspian Terns and Snowy Ploversmentioning

confidence: 99%

Evaluation of Caspian tern (<em>Hydroprogne caspia</em>) and snowy plover (<em>Charadrius alexandrinus nivosus</em>) nesting on modified islands at the Don Edwards San Francisco Bay National Wildlife Refuge, California—2016 Annual Report

Hartman¹,

Ackerman²,

Herzog³

et al. 2017

Open-File Report

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For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit https://www.usgs.gov/ or call 1-888-ASK-USGS (1-888-275-8747).For an overview of USGS information products, including maps, imagery, and publications, visit https:/store.usgs.gov.Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.Suggested citation: Hartman, C.A., Ackerman, J.T., Herzog, M.P., Strong, Cheryl, Trachtenbarg, David, and Shore, C.A., 2017, Evaluation of Caspian tern (Hydroprogne caspia) and snowy plover (Charadrius alexandrinus nivosus) nesting on modified islands at the Don Edwards San Francisco Bay National Wildlife Refuge, California-2016 Annual Report: U.S. Geological Survey Open-File Report 2017-1055, 37 p., https://doi.org/10.3133/ofr20171055. ISSN 2331ISSN -1258 iii Executive SummaryIn order to address the 2008/10 and Supplemental 2014 NOAA Fisheries Biological Opinion for operation of the Federal Columbia River Power System, the U.S. Army Corps of Engineers (USACE) and the Bureau of Reclamation (Reclamation) developed and have begun implementation of Caspian tern (Hydroprogne caspia) management plans. This implementation includes redistribution of the Caspian terns in the Columbia River estuary and the mid-Columbia River region to reduce predation on salmonids listed under the Endangered Species Act. Key elements of the plans include (1) reducing nesting habitat for Caspian terns in the Columbia River estuary and the mid-Columbia River region, and (2) creating or modifying nesting habitat at alternative sites within the Caspian tern breeding range. USACE and Reclamation developed Caspian tern nesting habitat at the U.S. Fish and Wildlife Service Don Edwards San Francisco Bay National Wildlife Refuge (DENWR), California, prior to the 2015 nesting season. Furthermore, to reduce or eliminate potential conflicts between nesting Caspian terns and threatened western snowy plovers (Charadrius alexandrinus nivosus), nesting habitat for snowy plovers also was developed. Seven recently constructed islands within two managed ponds (Ponds A16 and SF2) of DENWR were modified to provide habitat attractive to nesting Caspian terns (5 islands) and snowy plovers (2 islands). These 7 islands were a subset of 46 islands recently constructed in Ponds A16 and SF2 to provide waterbird nesting habitat as part of the South Bay Salt Pond (SBSP) Restoration Project. We used social attraction methods (decoys and electronic call systems) to attract Caspian terns and snowy plovers to these seven modified islands, and conducted surveys between March and September of 2015 and 2016 to evaluate nest numbers, nest density, and productivity. Results from the 2015 nesting...

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“…The greatest percentage of subyearling Chinook salmon detected on the bird colonies were last detected by the array located adjacent to the colonies. Juvenile steelhead may have a greater tendency to migrate closer to the water surface than other salmonids (Beeman et al 1999;Antolos et al 2005), making them more vulnerable to predation by Caspian terns (Collis et al 2001;Antolos et al 2005), which feed mostly in the top-most meter of the water column (Cuthbert and Wires 1999). Additionally, steelhead are larger and contain greater energy content than all other stocks of juvenile salmonids migrating through the Columbia River estuary (Martinson et al 1999).…”

Section: 8mentioning

confidence: 99%

Migratory Behavior and Survival of Juvenile Salmonids in the Lower Columbia River and Estuary in 2009

McMichael¹,

Harnish²,

Bellgraph³

et al. 2010

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The U.S. Army Corps of Engineers (USACE) Portland District places a high priority on increasing the understanding of the migratory behavior and survival of juvenile salmonids emigrating through the lower 235 km of the Columbia River and estuary. This understanding is critical to determining the effects of the Federal Columbia River Power System (FCRPS) on the 'post-hydrosystem' performance of these populations. Increased survival rates through the FCRPS and through the estuary are necessary to meet recovery goals set forth in the 2008 Biological Opinion (BiOp) on FCRPS operations. The goal of the study reported herein is to provide information regarding the migratory behavior and survival data from juvenile salmonids passing through the lower Columbia River and estuary between Bonneville Dam and the Pacific Ocean. The study was conducted by the Pacific Northwest National Laboratory using the Juvenile Salmon Acoustic Telemetry System (JSATS). The Portland District of the USACE and regional fisheries managers will use the information to manage the configuration and operation of the FCRPS and to evaluate management actions such as estuary habitat restoration and avian predation management to maximize survival rates of juvenile salmonids. ObjectivesIn this report we present estimated survival of acoustic-tagged juvenile yearling Chinook salmon (CH1), steelhead (STH), and subyearling Chinook salmon (CH0) downstream of Bonneville Dam as they migrated seaward through the Columbia River and its estuary. This study also provides, for the first time, estimates of survival through the lower 192 km of the Columbia River and estuary for groups of fish with known passage routes at John Day and Bonneville dams. The primary objective of this study was to estimate the survival of yearling and subyearling Chinook salmon and steelhead through multiple reaches of the Columbia River between Bonneville Dam and the Pacific Ocean. Other objectives were to, 1) compare the effects of FCPRS passage history on mortality of juvenile salmonids in the lower 192 km of the Columbia River and estuary, and 2) monitor and map migration pathway and habitat associations and behaviors relative to these pathways to support habitat restoration activities. MethodsThis study took advantage of JSATS-tagged fish collected and tagged at John Day Dam and released into the reservoir 41 km upstream of John Day Dam (near Roosevelt, WA at river kilometer (rkm) 388) during the spring and summer of 2009 for another Portland District project; "Studies of Surface Spill at John Day Dam" study (SPE-P-08-03). All study fish were double tagged with a 0.43 g JSATS acoustic transmitter and a passive integrated transponder (PIT) tag. The study area included the Columbia River and estuary between Bonneville Dam (rkm 235) and the mouth of the Columbia River (rkm 2.8). Autonomous acoustic receivers were deployed at 104 locations between the forebay of Bonneville Dam (rkm 236) and rkm 2.8 between 27 April and 17 August 2009. Receivers were recovered, tested, and redeployed eve...

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Caspian Tern (Hydroprogne caspia)

Cited by 38 publications

References 0 publications

Social attraction used to establish Caspian tern (Hydroprogne caspia) nesting colonies on modified islands at the Don Edwards San Francisco Bay National Wildlife Refuge, California—Final report

Social attraction used to establish Caspian tern (Hydroprogne caspia) nesting colonies on modified islands at the Don Edwards San Francisco Bay National Wildlife Refuge, California—Final report

Evaluation of Caspian tern (<em>Hydroprogne caspia</em>) and snowy plover (<em>Charadrius alexandrinus nivosus</em>) nesting on modified islands at the Don Edwards San Francisco Bay National Wildlife Refuge, California—2016 Annual Report

Migratory Behavior and Survival of Juvenile Salmonids in the Lower Columbia River and Estuary in 2009

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