説明
The Cape Shirreff Phocid Census (CS-PHOC) dataset is part of long-term monitoring efforts at Cape Shirreff, Livingston Island. The National Oceanic and Atmospheric Administration (NOAA) United States Antarctic Marine Living Resources Program (U.S. AMLR) and the Chilean Antarctic Institute (INACH) have conducted synoptic, weekly counts of Southern Ocean phocids hauled out on Cape Shirreff during most austral summers since 1997-98. These census data, which will continue to be collected by the U.S. AMLR program and thus updated yearly, provide a rare and valuable source of information about changes in population trends and area use by Southern Ocean phocids in a climate change hot spot.
CS-PHOC is a sampling event type dataset published as open data with technical support provided by SCAR Antarctic Biodiversity Portal (biodiversity.aq) (BELSPO project RT/23/ADVANCE).
This dataset contains records of Hydrurga leptonyx, Leptonychotes weddellii, Lobodon carcinophagus, and Mirounga leonina census counts at Cape Shirreff, Livingston Island (62.47° S, 60.77° W). All census records were collected by field biologists using binoculars during field expeditions at Cape Shirreff in the austral summers from December 1997 to February 2023.
The data is published as a standardized Darwin Core Archive, which contains presence, absence, sex and life stage of Southern Ocean phocids observed in each survey. This dataset is published under the license CC0. Please follow the guidelines from the SCAR Data Policy (SCAR, 2023) when using the data. A manuscript describing the CS-PHOC dataset is currently in review; if you are interested in the project or have any questions regarding this dataset, please contact us via the contact information provided in the metadata or via data-biodiversity-aq@naturalsciences.be.
This dataset is part of the U.S. Antarctic Marine Living Resources program funded by NOAA.
データ レコード
この sampling event リソース内のデータは、1 つまたは複数のデータ テーブルとして生物多様性データを共有するための標準化された形式であるダーウィン コア アーカイブ (DwC-A) として公開されています。 コア データ テーブルには、461 レコードが含まれています。
拡張データ テーブルは1 件存在しています。拡張レコードは、コアのレコードについての追加情報を提供するものです。 各拡張データ テーブル内のレコード数を以下に示します。
この IPT はデータをアーカイブし、データ リポジトリとして機能します。データとリソースのメタデータは、 ダウンロード セクションからダウンロードできます。 バージョン テーブルから公開可能な他のバージョンを閲覧でき、リソースに加えられた変更を知ることができます。
バージョン
次の表は、公にアクセス可能な公開バージョンのリソースのみ表示しています。
引用方法
研究者はこの研究内容を以下のように引用する必要があります。:
Woodman S M, Borras-Chavez R, Goebel M E, Torres D, Aguayo A, Krause D J (2024). CS-PHOC: Weekly census counts of Southern Ocean phocids at Cape Shirreff, Livingston Island (1997-2023). Version 2.0. SCAR - AntOBIS. Samplingevent dataset. https://doi.org/10.48361/gklk1u
権利
研究者は権利に関する下記ステートメントを尊重する必要があります。:
パブリッシャーとライセンス保持者権利者は SCAR - AntOBIS。 To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.
GBIF登録
このリソースをはGBIF と登録されており GBIF UUID: 2945946f-8a97-41e4-952d-f0a9438b0f2eが割り当てられています。 Ocean Biodiversity Information System によって承認されたデータ パブリッシャーとして GBIF に登録されているSCAR - AntOBIS が、このリソースをパブリッシュしました。
キーワード
Samplingevent; OCEAN; SOUTHERN OCEAN; ANTARCTICA; MARINE MAMMALS; PINNIPED; BIOGEOGRAPHY; census count data; Observation
連絡先
- メタデータ提供者 ●
- 最初のデータ採集者 ●
- 連絡先
https://orcid.org/0000-0001-6071-8186
- 最初のデータ採集者
- 最初のデータ採集者
- 最初のデータ採集者
- 最初のデータ採集者
- 最初のデータ採集者
- 連絡先
地理的範囲
Cape Shirreff, Livingston Island
| 座標（緯度経度） | 南 西 [-62.47, -60.77], 北 東 [-62.47, -60.77] |
|---|
生物分類学的範囲
All phocids were identified to species level
| Species | Lobodon carcinophagus (Crabeater seal), Mirounga leonina (Southern elephant seal), Hydrurga leptonyx (Leopard seal), Leptonychotes weddellii (Weddell seal) |
|---|
時間的範囲
| 開始日 / 終了日 | 1997-12-10 / 2023-02-10 |
|---|
プロジェクトデータ
This project provides census count data of Southern Ocean phocids at Cape Shirreff, Livingston Island.
| タイトル | U.S. Antarctic Marine Living Resources Program: Cape Shirreff Phocid Census |
|---|---|
| 識別子 | gov.noaa.nmfs.inport:70769 |
| ファンデイング | This project is funded by the NOAA Fisheries U.S. AMLR Program. Early years of data collections were funded by the Chilean Antarctic Institute (INACH). |
収集方法
This dataset consists of census counts of four Southern Ocean phocids during the austral summer at Cape Shirreff, Livingston Island, from 1997 through the time of publication. Counts were performed by trained INACH or U.S. AMLR field biologists following a standardized sampling protocol. Count data were grouped and aggregated to provide a single, comparable count for each species for each census.
| Study Extent | This dataset describes the census counts of four Southern Ocean phocids (crabeater, leopard, southern elephant, and Weddell seals) at Cape Shirreff, Livingston Island (62.47° S, 60.77° W), beginning in 1997 and running through the time of publication. |
|---|---|
| Quality Control | All event records were also reviewed and confirmed using the field notebook scans. All count records were screened for unreasonable values or duplicate entries via R code, either programmatically or visually through plots of the data. Duplicates were removed, and other data flagged by automated checks were validated using paper datasheets or scans of a technician’s field notebooks. Count records were also checked for consistency with regards to blank versus zero entries, ensuring that patterns in the data (i.e., when a particular count column should be NA vs zero) were consistent. Program directors were consulted about all observed patterns, as well as survey scope and techniques over the full timeseries. All scientific names were checked for typo and matched to the species information backbone of Worlds Register of Marine Species (http://marinespecies.org/) and LSID were assigned to each taxa as scientificNameID. Event date and time were verified to be compliant with ISO 8601 standard. |
Method step description:
- All data were collected at Cape Shirreff (62.47° S, 60.77° W) on the north shore of Livingston Island. Bounded by glaciers to the south, Cape Shirreff is approximately 3 km long and 1.5 km wide. The Cape Shirreff Phocid Census (CS-PHOC) surveys were conducted by INACH from 1997/98 to 2006/07. The U.S. AMLR Pinniped Research Program resumed these surveys in 2009/10, and, except for 2020/21 when the field season was canceled due to the COVID-19 pandemic, has performed them every season through the time of publication. Most CS-PHOC surveys were completed within one day, but occasionally spanned two or three days due to extenuating circumstances (e.g., weather).
- The INACH and U.S. AMLR programs both followed the same overall census protocol, where trained field technicians surveyed all safely accessible regions of Cape Shirreff and recorded all live phocids. They collected counts of each species, as well as age class and sex when possible. While the full extent of the area surveyed varied slightly across and within seasons, core census locations were always surveyed. These core census locations span the vast majority of the coastline and phocid haul-out locations at Cape Shirreff, thereby ensuring that CS-PHOC counts are representative of phocid haul-out at Cape Shirreff during each census window. Locations were surveyed on foot, either by walking through haul-out locations, or using binoculars from a high vantage point when practical. Counts were recorded in field notebooks. After the census, data were either entered into a database or otherwise archived.
- Entered data varied slightly across programs. Specifically, data from INACH surveys included explicit zero records when there were none of a particular phocid species at a location, while U.S. AMLR records did not include explicit zero records. After consultation with the U.S. AMLR program directors, explicit records with zeroes or missing codes as appropriate, were added to the U.S. AMLR data for core census locations for this dataset.
- Data records were compiled from historical documents, field notebooks, Excel files, and a SQL Server database. INACH historical data (i.e., paper records, reports, Excel files) were consolidated into Excel files. These INACH files, along with historical U.S. AMLR Excel files, were imported into the U.S. AMLR Pinniped SQL Server database using R (R Core Team 2023). Once in the database, all data were read into R, where they were cleaned and standardized as follows. Location names and count types (i.e., age class and sex) were converted to standard names, and columns containing count data were aggregated to the lowest resolution across datasets. For instance, some seasons male and female pup counts were recorded separately, but during others only a single pup count was recorded. For this dataset, all pup counts were aggregated to a single, total pup count for each census record.
- After cleaning, records were grouped and aggregated to provide a single, comparable count for each species for each census. Specifically, records were filtered for core census locations, and counts were summed after grouping by census and pinniped species. These core census location count values, along with counts for one other regularly-surveyed location, make up the published CS-PHOC dataset.
書誌情報の引用
- Thomas A. Jefferson, Marc A. Webber and Robert L. Pitman. Marine Mammals of the World: a comprehensive guide to their identification, 2nd Edition (Elsevier, 2015). https://doi.org/10.1016/C2012-0-06919-0
- https://www.fisheries.noaa.gov/inport/item/70769 gov.noaa.nmfs.inport:70769
- The Scientific Committee on Antarctic Research. (2023). SCAR Report 42 - September 2022 - SCAR Data Policy (2022). Zenodo. https://doi.org/10.5281/zenodo.7825314
追加のメタデータ
| 代替識別子 | 10.48361/gklk1u |
|---|---|
| 2945946f-8a97-41e4-952d-f0a9438b0f2e | |
| https://ipt-obis.gbif.us/resource?r=usamlr_cs-phoc |