Tagging rockhopper penguins in New Island
Data and Resources
This dataset has no data
Additional Info
| Field | Value |
|---|---|
| Last Updated | December 14, 2020, 09:52 (PST) |
| Created | January 30, 2020, 05:20 (PST) |
| Region | Falkland Islands |
| Language | eng |
| Topic Category | Biota; flora and/or fauna in natural environment |
| Temporal Extent Start | 2009-01-01 |
| Temporal Extent End | 2011-12-31 |
| Dataset Reference Date | 2011 |
| Lineage | Differences in the foraging behaviour of southern rockhopper penguins during the incubation period were examined using GPS and timeedepth data, stable isotope analysis and an automated weighbridge system. The results showed that while males carried out mostly long trips lasting several days, females often used coastal foraging areas on day trips. Stable isotope data suggested differences in prey composition between the sexes, with consistently higher trophic levels in males as expected for their larger size and ability to catch larger prey items. Ecological niche models, using MaxEnt modelling, were run to compare the environmental conditions in the utilized incubation season habitat between the sexes. MaxEnt models suggested that the niche spaces of males and females are largely overlapping, but males have slightly larger niche width. Smaller dive loggers (TDRs) were used in 2010/11 for comparison to larger GPS data loggers used in all three seasons and we included two categories of control birds: handled controls and PIT control birds that were previously marked with passive integrative transponders (PITs), but which had not been handled during this study. Increased foraging trip duration was only observed in GPS birds during 2010/11, the breeding season in which we also found GPS birds foraging further away from the colony and travelling longer distances. Compared to previous breeding seasons, 2010/11 may have been a period with less favourable environmental conditions, which would enhance the impact of logger attachments. A comparison between GPS and TDR birds showed a significant difference in dive depth frequencies with birds carrying larger GPS data loggers diving shallower. More details can be obtained from two publications: Ludynia K, Dehnhard N, Poisbleau M, Demongin L, Masello JF, et al. (2012) Evaluating the impact of handling and logger attachment on foraging parameters and physiology in southern rockhopper penguins. PLoS ONE 7(11): e50429. doi:10.1371/journal.pone.0050429 Ludynia K, Dehnhard N, Masello JF, Voigt CC, P Quillfeldt (2013) Sexual segregation in rockhopper penguins during incubation. Animal Behaviour(85): 255-267. doi:10.1016/j.anbehav.2012.11.001 |
| West Longitude | -61.3328 |
| South Latitude | -51.7908 |
| East Longitude | -61.2102 |
| North Latitude | -51.6479 |
| 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 |
| Data Format | unknown |
| Update Frequency | unknown |
| Accuracy | Unknown |
| Resource Type | Dataseries |
| Original Title | Hidden (internal use only) |
| Metadata Date | 2014-11-21 |
| Metadata Point of Contact | datamanager@saeri.ac.fk |
| Contact Consent | Contact details hidden |
| Unique Resource ID | FK-UNIGIESSEN-165 |
Dataset extent
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