Measuring the effects of human activity on Weddell Seals (Leptonychotes weddellii)Entry ID: ASAC_1148_Weddells
Abstract: The number of people travelling to Antarctica is growing, with much of the recent increase in visitor numbers attributable to an expansion in commercial tourism (Enzenbacher 1992; 1994). Most visitors to the region seek direct interactions with the wildlife and so visit breeding groups of seals and seabirds (Stonehouse 1965; Muller-Schwarze 1984). Invariably, this involves travelling to breeding ... sites by helicopter, inflatable motorised boat (e.g. zodiac) or over-snow vehicle, then making relatively close approaches on foot to photograph and observe the animals. At present, there is information to suggest that visitation can have a negative effect on some Antarctic wildlife, causing changes to behaviour, physiology and breeding success (Culik et al. 1989; Woehler et al. 1994, Giese 1996; Giese 1998, Giese and Riddle 1999). However, the responses of Weddell seals (Leptonychotes weddellii) to human activity have never been systematically examined. As a result, any guidelines to control human activity around these animals are based either on opportunistic observations of seal response, and/or assumptions as to the level of disturbance seals are experiencing.
Therefore, the primary objective of the research is to measure the responses of Weddell seals to various human disturbance stimuli. In so doing, the research aims to make quality information available for the development of a comprehensive and scientifically based set of guidelines for managing interactions between people and Antarctic seals.
The research will adopt an experimental approach, whereby seals are experimentally exposed to particular types and intensities of human activity while their responses are objectively quantified. As far as possible, experiments are designed to replicate actual disturbances that Weddell seals are presently exposed to in Antarctica. As such, the responses of cow/pup pairs to approaches by pedestrians, over-snow vehicles and helicopters will be examined. In particular, experiments will investigate how approach distance (or altitude), approach speed, time of day, weather conditions and the time of the breeding season, influence the responses of Weddell Seals to these disturbance stimuli. Disturbance responses will be quantified by measuring the behaviour and heart rate of individual seals and the haul-out behaviour of entire groups of animals. Experiments will also be conducted to quantify the sound generated by vehicle operations in Antarctica to help determine whether anthropogenic noise effects vocal communication among Weddell seal, as indicated by changes in their calling rates.
Also see the metadata record entitled: Behavioural responses of Weddell seals to human activity.
At this stage most of the analysis is in progress and therefore it is not possible to provide complete data sets. These will be submitted upon the completion of the work. The attached word document summarises the experiments that have been completed during the three field seasons to date (up to the end of the 2002/2003 season), which included, the experiment type, location and sample size.
The two excel data sheets 'Experimental recording details' provide information on the video recordings that were made during the 2001/2002 and the 2002/2003 summers. These details state the experimental procedure, the details of the experimental, the time, date etc. They include Hi8 video camera recordings of Weddell seal behaviour and DAT recordings of vocalisations.
Biological data collected during the 2002/2003 summer include:
Collected 10 sample of blood (up to 50 ml each)
Collected 6 samples of urine
Collected 11 samples of fur
Collected 9 samples of blubber
Collected 6 samples of faecal swabs (from the ice or thermometer)
Conducted a post mortem on a recently deceased seal and collected organ and tissue samples.
These samples are being analysed by investigators in ASAC 1144. When results are available they will documented in either ASAC 1148 or 1144.
The fields in this dataset are:
Position of Pup
Distance of Closest Pair
Distance of Tide Crack
Further data has been added to the archive for up to the end of the 2006. These include data files, plus scanned field notes taken during the project. Finally, video tapes relating to the project have also been stored in the Australian Antarctic Division's multimedia library.
(Click for Interactive Map)
Quality See the readme file for information regarding newer datasets. Analysis of data may prove difficult without the correct software dongle.
Access Constraints Datasets detailing work undertaken are available for download from the url given below.
Video tapes have been stored in the multimedia centre of the Australian Antarctic Division.
Data are not publicly available.
Use Constraints This data set conforms to the PICCCBY Attribution License
Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_114... when using these data.
Data Set Progress
Distribution Media: HTTP
Distribution Size: 14 MB
Distribution Format: excel, pdf
Phone: +61 2 62741549
Fax: +61 2 6274 1006
Email: melissa.giese at ea.gov.au
C/ Marine Species Section GPO Box 787 Environment Australia
Province or State: Australian Capital Territory
Postal Code: 2601
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Phone: +61 7 4970 7289
Fax: +61 7 4970 7207
Email: t.vanpolanenpetel at cqu.edu.au
Centre for Environmental Management Central Queensland University PO Box 1319
City: Central Queensland University
Province or State: Queensland
Postal Code: 4680
Giese, M.A and van Polanen Petel, T.D. (2001), Minimising the Disturbance to Antarctic Wildlife, Australian Antarctic Magazine, 1, 14-15
van Polanen Petel, T.D., Giese, M.A. and Bryden, M. (2001), Do Visitors Disturb Weddell Seals in Antarctica?, Presented at the Southern Hemisphere Marine Mammal Conference, Phillip Island, Australia.
van Polanen Petel, T.D., Giese, M.A. and Bryden, M. (2001), Measuring the Effects of Human Activity on Weddell Seals (Leptonychotes weddellii) in Antarctica., Presented at the SCAR Biology Symposium, Amsterdam, The Netherlands.
van Polanen Petel, T.D., Giese, M.A., Wotherspoon, S and Hindell, M.A. (2008), A preliminary investigation of the effect of repeated pedestrian approaches to Weddell seals (Leptonychotes weddellii), Applied Animal Behaviour Science, 112, 1, 205-211
van Polanen Petel, T.D., Giese, M.A., Wotherspoon, S and Hindell, M.A. (2007), The behavioural response of lactating Weddell seals (Leptonychotes weddellii) to over-snow vehicles: A Case Study, Canadian Journal of Zoology, 85, 4, 488-496
van Polanen Petel, T., Terhune, J.M., Hindell, M.A. and Giese, M.A. (2006), An Assessment of the Audibility of Sound from Human Transport by Breeding Weddell Seals Leptonychotes weddellii, Wildlife Research, 33, 275-291
van Polanen Petel, T.D. (2005), Measuring the Effects of Human Activity on Weddell Seals (Leptonychotes weddellii) in Antarctica, Monash University, Doctoral thesis
Bodley, K., van Polanen Petel, T. and Gales, N. (2004), Immobilisation of Free-living Weddell Seals Leptonychotes weddellii using Midazolam and Isoflurane., Polar Biology, 28, 631-636
van Polanen Petel, T.D., Giese, M.A., Hindell, M.A., and Wotherspoon, S. (2005), The Behavioural Responses of Lactating Weddell Seals and their Pups (Leptonychotes weddellii) to Pedestrian Approaches., Presented at the International Wildlife Management Society Conference, Hobart, Australia.
van Polanen Petel, T.D., Giese, M.A., Hindell, M.A., and Wotherspoon, S. (2004), Behavioural Responses of Lactating Weddell Seals (Leptonychotes weddellii) to Human Activity., Presented at the Australian Marine Science Association Conference, Hobart, Australia.
van Polanen Petel, T.D., Giese, M.A., Hindell, M.A., and Riddle, M.J. (2003), Measuring the Effects of Human Activity on Weddell Seals in Antarctica., Presented at the 3rd International Wildlife Management Congress, Christchurch, New Zealand.
van Polanen Petel, T.D., Giese, M.A., Hindell, M.A., and Wotherspoon, S. (2005), The Behavioural Responses of Lactating Weddell Seals and their Pups (Leptonychotes weddellii) to Pedestrian Approaches., Presented at the Society of Marine Mammal Conference, San Diego, USA.
van Polanen Petel, T.D., Giese, M.A. and Bryden, M. (2001), Do Visitors Disturb Weddell Seals in Antarctica?, Presented at the Southern Hemisphere Marine Mammal Conference, Phillip Island, Australia
van Polanen Petel, T.D., Giese, M.A. and Bryden, M. (2001), Are Humans in Antarctica Having an Effect on Weddell Seals (Leptonychotes weddellii)?, Presented at the Sustainable Wildlife Tourism Conference, Hobart, Australia.
Creation and Review Dates
DIF Creation Date: 2002-01-02
Last DIF Revision Date: 2011-04-25