Reproduction and survival data from Steller sea lions from the declining western Aleutian Islands in relation to the stable eastern Gulf of Alaska region, 2014
This project is for Phase 2 of a 3-phase project to determine reproduction, survival and depredation in Steller sea lions in the western Aleutian Islands (WAI) in relation to the eastern Gulf of Alaska (eGOA). Phase 1 proved high juvenile depredation in the eGOA through the novel use of life-long te...
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dataone:10.24431_rw1k449_2020_3_24_224732 2023-11-08T14:15:00+01:00 Reproduction and survival data from Steller sea lions from the declining western Aleutian Islands in relation to the stable eastern Gulf of Alaska region, 2014 Markus Horning ENVELOPE(-149.43956,-147.15305,60.85215,60.066128) BEGINDATE: 2013-12-31T22:00:00Z ENDDATE: 2014-12-30T22:00:00Z 2013-08-30T00:00:00Z https://search.dataone.org/view/10.24431_rw1k449_2020_3_24_224732 unknown Research Workspace OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA Steller sea lions Otariidae eared seals, sea lions EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > SPECIES PREDATION vital rate predation telemetry natality Parturition Primiparity Primiparity Dataset 2013 dataone:urn:node:RW 2023-11-08T13:46:00Z This project is for Phase 2 of a 3-phase project to determine reproduction, survival and depredation in Steller sea lions in the western Aleutian Islands (WAI) in relation to the eastern Gulf of Alaska (eGOA). Phase 1 proved high juvenile depredation in the eGOA through the novel use of life-long telemetry impants. In Phase 2 we will use improved Life History Transmitters (LHX-2 tags) in up to 10 pre-reproductive female western Steller sea lions from the Chiswell Island rookery (eGOA). LHX-2 tags record data throughout the host’s life, record birth events in females, and after death of the host transmit stored data via satellite. Post-mortem data will yield age at first pupping and lifetime births in females, as well as age and cause of death (predation vs. non-predation). All animals will be observed through remote video systems at Chiswell Island to determine pupping in subsequent years. Phase 2 objectives are to (1) validate LHX-2 birth detection against direct visual observations; (2) increase the eGOA sample size for animals >=3 years to enhance the statistical power of a regional comparison to the WAI; (3) facilitate the transition to remote LHX-2 tag deployments in the WAI by validating less invasive surgery enabled by smaller LHX-2 tags. The objectives of Phase 2 will be essential to enabling Phase 3. In a future Phase 3 (not requested here) we will use LHX-2 tags in the WAI to determine regional differences in survival and predation rates, birth rates and age at first reproduction. The dataset for this project is composed of one data file: NPRB-1310-final-data.csv. This dataset was generated under NPRB project 1310. Dataset Alaska Aleutian Islands Research Workspace (via DataONE) Gulf of Alaska Pacific ENVELOPE(-149.43956,-147.15305,60.85215,60.066128) |
institution |
Open Polar |
collection |
Research Workspace (via DataONE) |
op_collection_id |
dataone:urn:node:RW |
language |
unknown |
topic |
OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA Steller sea lions Otariidae eared seals, sea lions EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > SPECIES PREDATION vital rate predation telemetry natality Parturition Primiparity Primiparity |
spellingShingle |
OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA Steller sea lions Otariidae eared seals, sea lions EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > SPECIES PREDATION vital rate predation telemetry natality Parturition Primiparity Primiparity Markus Horning Reproduction and survival data from Steller sea lions from the declining western Aleutian Islands in relation to the stable eastern Gulf of Alaska region, 2014 |
topic_facet |
OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA Steller sea lions Otariidae eared seals, sea lions EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > SPECIES PREDATION vital rate predation telemetry natality Parturition Primiparity Primiparity |
description |
This project is for Phase 2 of a 3-phase project to determine reproduction, survival and depredation in Steller sea lions in the western Aleutian Islands (WAI) in relation to the eastern Gulf of Alaska (eGOA). Phase 1 proved high juvenile depredation in the eGOA through the novel use of life-long telemetry impants. In Phase 2 we will use improved Life History Transmitters (LHX-2 tags) in up to 10 pre-reproductive female western Steller sea lions from the Chiswell Island rookery (eGOA). LHX-2 tags record data throughout the host’s life, record birth events in females, and after death of the host transmit stored data via satellite. Post-mortem data will yield age at first pupping and lifetime births in females, as well as age and cause of death (predation vs. non-predation). All animals will be observed through remote video systems at Chiswell Island to determine pupping in subsequent years. Phase 2 objectives are to (1) validate LHX-2 birth detection against direct visual observations; (2) increase the eGOA sample size for animals >=3 years to enhance the statistical power of a regional comparison to the WAI; (3) facilitate the transition to remote LHX-2 tag deployments in the WAI by validating less invasive surgery enabled by smaller LHX-2 tags. The objectives of Phase 2 will be essential to enabling Phase 3. In a future Phase 3 (not requested here) we will use LHX-2 tags in the WAI to determine regional differences in survival and predation rates, birth rates and age at first reproduction. The dataset for this project is composed of one data file: NPRB-1310-final-data.csv. This dataset was generated under NPRB project 1310. |
format |
Dataset |
author |
Markus Horning |
author_facet |
Markus Horning |
author_sort |
Markus Horning |
title |
Reproduction and survival data from Steller sea lions from the declining western Aleutian Islands in relation to the stable eastern Gulf of Alaska region, 2014 |
title_short |
Reproduction and survival data from Steller sea lions from the declining western Aleutian Islands in relation to the stable eastern Gulf of Alaska region, 2014 |
title_full |
Reproduction and survival data from Steller sea lions from the declining western Aleutian Islands in relation to the stable eastern Gulf of Alaska region, 2014 |
title_fullStr |
Reproduction and survival data from Steller sea lions from the declining western Aleutian Islands in relation to the stable eastern Gulf of Alaska region, 2014 |
title_full_unstemmed |
Reproduction and survival data from Steller sea lions from the declining western Aleutian Islands in relation to the stable eastern Gulf of Alaska region, 2014 |
title_sort |
reproduction and survival data from steller sea lions from the declining western aleutian islands in relation to the stable eastern gulf of alaska region, 2014 |
publisher |
Research Workspace |
publishDate |
2013 |
url |
https://search.dataone.org/view/10.24431_rw1k449_2020_3_24_224732 |
op_coverage |
ENVELOPE(-149.43956,-147.15305,60.85215,60.066128) BEGINDATE: 2013-12-31T22:00:00Z ENDDATE: 2014-12-30T22:00:00Z |
long_lat |
ENVELOPE(-149.43956,-147.15305,60.85215,60.066128) |
geographic |
Gulf of Alaska Pacific |
geographic_facet |
Gulf of Alaska Pacific |
genre |
Alaska Aleutian Islands |
genre_facet |
Alaska Aleutian Islands |
_version_ |
1782011870061789184 |