Demography and breeding biology of southern sea lions of Sea Lion Island, Falkland Islands (2013-2019)
Data and Resources
This dataset has no data
Additional Info
| Field | Value |
|---|---|
| Last Updated | December 14, 2020, 09:55 (PST) |
| Created | January 30, 2020, 05:23 (PST) |
| Region | Falkland Islands |
| Language | eng |
| Topic Category | Biota; flora and/or fauna in natural environment |
| Temporal Extent Start | 2013-01-01 |
| Temporal Extent End | 2019-12-31 |
| Dataset Reference Date | 2019 |
| Lineage | Weekly counts of the main sea lion breeding colonies are carried out each season. We also carry out opportunistic counts whenever possible. The numbers of sex and age classes, focusing in particular on pups, adult females, and breeding males is taken. We record breeding events including settlement of territorial males, births, and matings. We map the distribution of sea lions in the breeding colony using navigation grade GPS receivers (accuracy about 5 meters), taking into account the offset from the operator position to the actual sea lion position. Mapping is carried in QGIS. We also do weekly survey of the whole coastline of the island, and we record sea lion presence and location, again using GPS receivers. We collect ad libitum observations of sea lion whenever possible, focusing in particular on territorial interactions between males, and mother-pup contacts. We carry out necropsies of dead sea lions found on the beaches. In 2016-2019 we flew a semi-professional drone over the main breeding colony, we took high resolution digital pictures of the sea lions, and we counted them in the pictures, obtaining a notable increase in accuracy over manual counts in some cases. We also flew our drone over Rum Island to check sea lion presence and breeding there. |
| West Longitude | -59.1519 |
| South Latitude | -52.4486 |
| East Longitude | -59.0364 |
| North Latitude | -52.4205 |
| Spatial Reference System | WGS84 |
| Responsible Organisation Name | Hidden (personal data protection) |
| Contact Mail Address | Hidden (personal data protection) |
| Responsible Party Role | Hidden (personal data protection) |
| Access Limitations | Restricted, send data request to data owner |
| Use Constraints | Restricted, but open subject to limitations and prior agreement with responsible organisation. Copyright must be cited |
| Resource Reference | Copyright ESRG 1995-present - All Rights Reserved. Please contact ESRG before citing unpublished reports. |
| Data Format | csv |
| Update Frequency | annually |
| Accuracy | Accuracy of mapping by navigation grade GPS (e.g. daily mapping of males) is 5 metres. Collection of all other data is compliant to usual research standards, and a great effort is put to guarantee high repeatability of data. |
| Resource Type | Dataseries |
| Original Title | Hidden (internal use only) |
| Metadata Date | 2019-04-03 |
| Metadata Point of Contact | datamanager@saeri.ac.fk |
| Contact Consent | Contact details hidden |
| Unique Resource ID | FK-ESRG-387 |