Brief description
Green turtle and flatback hatchlings from Barrow Island and hawksbill hatchlings from Varanus Island in the Lowendal Group were collected and used in experiments to assess the preference of these species to short or long light wavelengths. Data obtained from these experiments combined with light emission analyses in Chapter 5 of the thesis are used to identify the lights that are potentially the most disruptive to hatchlings on Barrow, Lowendal, Montebello (B-L-M) complex nesting beaches.Lineage
Maintenance and Update Frequency: notPlanned
Statement: - Animal collection and treatment -
The timing for the light experiments was determined by assessing nesting activity over each of the three summers 2000, 2001 and 2002. Where possible, trips to the islands were then scheduled 6-8 weeks after the peak of the nesting effort for each species each summer. Hatchlings were found by a combination of searching the beaches for emerging or partially emerged nests and monitoring terrestrial predator behaviour.
Wavelengths tested: 450, 480, 500, 550, 570, 600, 630, 650, 670, 700 nm.
For details of testing and test equipment see section 4.3.3 of the thesis.
Notes
CreditChevronTexaco
Credit
Apache Energy
Apache Energy
Credit
Natural Hertiage Trust Grant #9924
Natural Hertiage Trust Grant #9924
Credit
BHP Billiton
BHP Billiton
Credit
Santos
Santos
Credit
Woodside
Woodside
Created: 13 08 2007
Data time period: 2000-01 to 2002-01
text: westlimit=115.2; southlimit=-21.2; eastlimit=115.7; northlimit=-20.2
Subjects
39 020002 |
39 020003 |
39 020005 |
Biosphere | Ecological Dynamics | Post-breeding |
Chelonia mydas |
EARTH SCIENCE |
Eretmochelys imbricata |
Natator depressus |
Oceans | Marine Biology | Marine Reptiles |
SPECTRAL/ENGINEERING |
Visible Radiance |
VISIBLE WAVELENGTHS |
oceans |
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Other Information
(PhD thesis)
uri :
http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20060612.120104
global : de166950-4934-11dc-a73f-00188b4c0af8
Identifiers
- global : 2a36f000-495a-11dc-a73f-00188b4c0af8