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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Axiom Data Science
2020
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ftdatacite:10.24431/rw1k449 2023-05-15T18:48:50+02:00 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 Horning, Markus 2020 https://dx.doi.org/10.24431/rw1k449 https://search.dataone.org/#view/10.24431/rw1k449 en eng Axiom Data Science dataset Dataset 2020 ftdatacite https://doi.org/10.24431/rw1k449 2021-11-05T12:55:41Z 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 DataCite Metadata Store (German National Library of Science and Technology) Gulf of Alaska |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
English |
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 |
Horning, Markus |
spellingShingle |
Horning, Markus 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 |
author_facet |
Horning, Markus |
author_sort |
Horning, Markus |
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 |
Axiom Data Science |
publishDate |
2020 |
url |
https://dx.doi.org/10.24431/rw1k449 https://search.dataone.org/#view/10.24431/rw1k449 |
geographic |
Gulf of Alaska |
geographic_facet |
Gulf of Alaska |
genre |
Alaska Aleutian Islands |
genre_facet |
Alaska Aleutian Islands |
op_doi |
https://doi.org/10.24431/rw1k449 |
_version_ |
1766242135015686144 |