Abstract
A sonar transect method has been found to be a useful alternative to traditional tape-transect methods in quantification of the species richness and abundance of reef fish. No significant difference was found between species richness measured by the methods, and high Jaccard’s similarity coefficients were calculated for each site using the two methods, indicating a similar response to fish of both the sonar and tape transects. Abundance estimates of one species only (Chaetodon tricinctus) were greater when the transect tape method was used, probably because fish were being attracted to the divers who deployed the transect tape. Substantial time saving was also noted for the sonar transects, indicating overall that estimating distance using sonar rather than transect tape may enable increased efficiency and accuracy in␣underwater visual surveys for both ecological␣and management-related research on reef fishes.
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References
Bean K, Jones GP, Caley MJ (2002) Relationships among distribution, abundance and microhabitat specialisation in a guild of coral reef triggerfish (family Balistidae). Mar Ecol Prog Ser 233:263–272
Cappo M, Brown IW (1996) Evaluation of sampling methods for reef fish populations of commercial and recreational interest. CRC Reef Research Centre, Technical Report 6, Townsville, Australia
Choat JH, Ayling AM, Schiel DR (1988) Temporal and spatial variation in an island fish fauna. J Exp Mar Biol Ecol 121:91–111
Cole RG (1994) Abundance, size structure, and diver-oriented behaviour of three large benthic carnivorous fishes in a marine reserve in Northeastern New Zealand. Biol Cons 70:93–99
Edgar GJ, Samson CR (2004) Catastrophic decline in mollusc diversity in eastern Tasmania and its concurrence with shellfish fisheries. Cons Biol 18:1579–1588
Edgar GJ, Barrett NS, Morton AJ (2004) Biases associated with the use of underwater visual census techniques to quantify the density and size-structure of fish populations. J Exp Mar Biol Ecol 308:269–290
Fowler AJ (1987) The development of sampling strategies for population studies of coral reef fishes. A case study Coral Reefs 6:49–58
Garpe KC, Ohman MC (2003) Coral and fish distribution patterns in Mafia Island Marine Park, Tanzania: fish-habitat interactions. Hydrobiologia 498:191–211
Gillanders BM, Kingsford MJ (1998) Influence of habitat on abundance and size structure of a large temperate-reef fish, Achoerodus viridis (Pisces: Labridae). Mar Biol 132:503–514
Hiddink JG, Wolff WJ (2002) Changes in distribution and decrease in numbers during migration of the bivalve Macoma balthica. Mar Ecol Prog Ser 233:117–130
Hughes TP, Baird AH, Dinsdale EA, Moltschaniwskyj NA, Pratchett MS, Tanner JE, Willis BL (1999) Patterns of recruitment and abundance of corals along the Great Barrier Reef. Nature 397:59–63
Jones GP (1984) Population ecology of the temperate reef fish Pseudolabrus celidotus Bloch and Schneider (Pisces: Labridae). I. Factors influencing recruitment. J Exp Mar Biol Ecol 75:257–276
Kingsford MJ (1989) Distribution patterns of planktivorous reef fish along the coast of north-eastern New Zealand. Mar Ecol Prog Ser 54:13–24
Kingsford MJ (1998) Reef fish. In: Kingsford MJ, Battershill C (eds) Studying temperate marine environments: a handbook for ecologists. University of Canterbury Press, Christchurch, pp 132–166
Lincoln Smith MP (1988) Effects of observer swimming speed on sample counts of temperate rocky reef fish assemblages. Mar Ecol Prog Ser 43:223–231
Lubchenco J, Palumbi SR, Gaines SD, Andelman S (2003) Plugging a hole in the ocean: the emerging science of marine reserves. Ecol Appl 13(suppl):S3–S7
New South Wales Marine Parks Authority (2004) User’s guide to the zoning plan – Lord Howe Island Marine Park. Paragon Printers, Canberra, 48 pp
Russ GR (2002) Yet another review of marine reserves as reef management tools. In: Sale PF (ed) Coral reef fishes: dynamics and diversity in a complex ecosystem. Academic Press, San Diego, pp 421–443
Samoilys MA, Carlos G (2000) Determining methods of underwater visual census for estimating the abundance of coral reef fishes. Environ Biol Fishes 57:289–304
Schmitt EF, Sluka RD, Sullivan-Sealey KM (2002) Evaluating the use of roving diver and transect surveys to assess the coral reef fish assemblage off southeastern Hispaniola. Coral Reefs 21:216–223
Acknowledgements
Thanks to D. Holden for assistance in the field and S. Thompson for providing the map. Logistical support was provided by the Lord Howe Island Board, and the NSW Marine Parks Authority. P. Munday improved an earlier draft of this manuscript. Funding was provided by grants from the University of Melbourne and the Australian Research Council to S.E.S. and a grant from the Australian Geographic Society to H.M.P.
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Patterson, H.M., Lindsay, M. & Swearer, S.E. Use of sonar transects to improve efficiency and reduce potential bias in visual surveys of reef fishes. Environ Biol Fish 78, 291–297 (2007). https://doi.org/10.1007/s10641-006-9096-2
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DOI: https://doi.org/10.1007/s10641-006-9096-2