PTAGIS (Electronic Recovery of ISO-PIT Tags from Avian Predators in the Columbia River Basin)

Annually, colonial nesting piscivorous birds prey upon millions of juvenile salmonids Oncorhynchus spp., many of which have been implanted with passive integrated transponders (PIT) tags as they emigrate from the Columbia River Basin (Roby et al. 1998; Ryan et al. 2001). We propose to continue the sampling initiated in 1998 by using PIT-tag detection equipment (Ryan et al. 2001) to detect PIT-tag codes on piscivorous bird colonies in the Columbia River estuary, and characterize prey selectivity by avian predators on juvenile salmonids. PIT-tag detections in the estuary will be used in support of ongoing management actions to decrease consumption of juvenile salmonids by the Caspian tern Hydroprogne caspia and double-crested cormorant Phalacrocorax auritas in the Columbia River Basin. In 2012, we will work in collaboration with Oregon State University (OSU) and Real Time Research (RTR) to identify Caspian tern and double-crested cormorant colonies likely to affect populations of migrating juvenile salmonids. Once the birds complete their nesting season and vacate the nesting sites, we will deploy electronic PIT-tag detection equipment on each colony and detect all logistically recoverable tag codes. We will also collaborate with OSU and RTR biologists to evaluate sampling-gear detection efficiency for each site by planting PIT tags with known codes on the surface of the colonies before nesting begins and throughout the nesting season.The goals of the study:

1) Survey PIT tags from avian breeding colonies in the Columbia River basin, once predatory birds have vacated for the season, with an emphasis on lower Columbia River and estuarine sites. This provides information for bird management activities and assess overall predation levels.

2) Compare the vulnerabilities of fish of different ESU (Evolutionarily Significant Unit )/DPS (Distinct Population Segment) groups and migration histories. Regional PIT-tag data repository

Data e Risorse

Campo Valore
accessLevel public
bureauCode {006:48}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier gov.noaa.nmfs.inport:20553
language {en-US}
modified 2011-12-31
old-spatial {"type": "Polygon", "coordinates": [[[-123.985853148, 46.199543], [-123.947401, 46.199543], [-123.947401, 46.261766913], [-123.985853148, 46.261766913], [-123.985853148, 46.199543]]]}
programCode {006:056}
publisher (Point of Contact)
resource-type Dataset
source_datajson_identifier true
source_hash 52a8d4d049dada85b9b5d77bab5ecc7f68ed5cd3
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-123.985853148, 46.199543], [-123.947401, 46.199543], [-123.947401, 46.261766913], [-123.985853148, 46.261766913], [-123.985853148, 46.199543]]]}
temporal 1998-01-01T00:00:00/2011-12-31T00:00:00
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • amerigeo
  • amerigeoss
  • biological
  • bird-colonies
  • ckan
  • columbia-river-estuary
  • doc-noaa-nmfs-nwfsc-northwest-fisheries-science-center
  • east-sand-island
  • fe-legacy-data-sets
  • geo
  • geoss
  • national
  • national-marine-fisheries-service
  • noaa-u-s-department-of-commerce
  • north-america
  • oncorhynchus-spp
  • oregon
  • pit-tag
  • point-adams
  • point-adams-hammond
  • population-surveys
  • predators
  • protected-species-and-marine-mammals
  • united-states
  • washington
isopen False
license_id notspecified
license_title License not specified
maintainer Zamon, Jeannette E
maintainer_email Jen.Zamon@noaa.gov
metadata_created 2025-11-22T00:35:47.499796
metadata_modified 2025-11-22T00:35:47.499799
notes Annually, colonial nesting piscivorous birds prey upon millions of juvenile salmonids Oncorhynchus spp., many of which have been implanted with passive integrated transponders (PIT) tags as they emigrate from the Columbia River Basin (Roby et al. 1998; Ryan et al. 2001). We propose to continue the sampling initiated in 1998 by using PIT-tag detection equipment (Ryan et al. 2001) to detect PIT-tag codes on piscivorous bird colonies in the Columbia River estuary, and characterize prey selectivity by avian predators on juvenile salmonids. PIT-tag detections in the estuary will be used in support of ongoing management actions to decrease consumption of juvenile salmonids by the Caspian tern Hydroprogne caspia and double-crested cormorant Phalacrocorax auritas in the Columbia River Basin. In 2012, we will work in collaboration with Oregon State University (OSU) and Real Time Research (RTR) to identify Caspian tern and double-crested cormorant colonies likely to affect populations of migrating juvenile salmonids. Once the birds complete their nesting season and vacate the nesting sites, we will deploy electronic PIT-tag detection equipment on each colony and detect all logistically recoverable tag codes. We will also collaborate with OSU and RTR biologists to evaluate sampling-gear detection efficiency for each site by planting PIT tags with known codes on the surface of the colonies before nesting begins and throughout the nesting season.The goals of the study: 1) Survey PIT tags from avian breeding colonies in the Columbia River basin, once predatory birds have vacated for the season, with an emphasis on lower Columbia River and estuarine sites. This provides information for bird management activities and assess overall predation levels. 2) Compare the vulnerabilities of fish of different ESU (Evolutionarily Significant Unit )/DPS (Distinct Population Segment) groups and migration histories. Regional PIT-tag data repository
num_resources 2
num_tags 25
title PTAGIS (Electronic Recovery of ISO-PIT Tags from Avian Predators in the Columbia River Basin)