In Australia, the adventure sport of canyoning occurs predominantly in the protected areas of the Greater Blue Mountains World Heritage Area, 50 km west of Sydney. It involves travelling through narrow, deep gorges using a combination of walking, abseiling, wading, rock scrambling and/ or swimming through the canyon streams. The sport's popularity is reported to have increased substantially over time, causing concern for the sustainability of these fragile ecosystems. To investigate visitor impacts, benthic macroinvertebrate assemblages and water quality were compared among four canyons subject to high visitation (average 20 - 100 visits per week) with those in four unvisited/low visitation canyons (0 - 5 visits per week). Comparison was also made between impacted and non-impacted areas within two of the high visitation canyons. Sampling was undertaken over two canyoning seasons (early spring to late autumn).

No significant relationship between macroinvertebrate assemblage composition or water quality was observed due to visitation level within and among canyons, although there were inherent differences among canyons.Water quality was consistent with pristine conditions in all locations. Macroinvertebrate assemblages included a range of pollution sensitive taxa (e.g., Ephemeroptera represented by 42.3% of all animals). Although family richness was concentrated within a few orders (84.2% of families were represented by 50% of orders), most families were represented by 2 Recognisable Taxonomic Units, 47.4% of these were represented by a single taxon.

We concluded that, at current visitation levels, there is no measurable impact on the predominant animal component of these ecosystems. This finding was contrary to the expectations of the land managers of this area.

Allen J. D. 1995. Stream Ecology - Structure and Function of Running Waters. Chapman and Hall: London.
,
Stream Ecology - Structure and Function of Running Waters
American Canyoneering Association. 2007. www. canyoneering.net.
Angradi E. R. 1999. Fine sediment and macroinvertebrate assemblages in Appalachian streams: a field experiment with biomonitoring applications. Journal of the North American Benthological Society 18: 49-66.
,
Fine sediment and macroinvertebrate assemblages in Appalachian streams: a field experiment with biomonitoring applications
,
Journal of the North American Benthological Society
, vol.
18
(pg.
49
-
66
)
ANZECC and ARMCANZ. 2000. Australian and New Zealand Guidelines for Fresh and Marine Waters. National Water Quality Management Strategy Paper No. 4. Australian and New Zealand Environment and Conservation Council and Agriculture and Resource Management Council of Australia and New Zealand: Canberra.
,
Australian and New Zealand Guidelines for Fresh and Marine Waters. National Water Quality Management Strategy Paper No. 4
Bender E. A., Case T. J. and Gilpin M. E. 1984. Perturbation experiments in community ecology: theory and practice. Ecology 65: 1-13.
,
Perturbation experiments in community ecology: theory and practice
,
Ecology
, vol.
65
(pg.
1
-
13
)
Benson D. A. and Keith D. A. (Compilers) 1977. Natural Vegetation of the Katoomba/Wallerawang area, 1:100,000 Vegetation Series. National Herbarium of New South Wales, Royal Botanic Gardens: Sydney.
,
Natural Vegetation of the Katoomba/Wallerawang area, 1:100,000 Vegetation Series
Bond N. R. and Downes B. J. 2000. Flow - related disturbance in streams: an experimental test of the role of rock movement in reducing macroinvertebrate population densities. Journal of Marine and Freshwater Research 51: 333-337.
,
Flow - related disturbance in streams: an experimental test of the role of rock movement in reducing macroinvertebrate population densities
,
Journal of Marine and Freshwater Research
, vol.
51
(pg.
333
-
337
)
Bond N. R. and Downes B. J. 2003. The independent and interactive effects of fine sediment and flow on benthic invertebrate communities characteristic of small upland streams. Freshwater Biology 48: 455-465.
,
The independent and interactive effects of fine sediment and flow on benthic invertebrate communities characteristic of small upland streams
,
Freshwater Biology
, vol.
48
(pg.
455
-
465
)
Boulton A. J. 2003. Parallels and contrasts in the effects of drought on stream macroinvertebrate assemblages. Freshwater Biology 48: 1173-1185.
,
Parallels and contrasts in the effects of drought on stream macroinvertebrate assemblages
,
Freshwater Biology
, vol.
48
(pg.
1173
-
1185
)
Brewin P. A., Buckton S. T. and Ormerod S. J. 2000. The seasonal dynamics and persistence of stream macroinvertebrates in Nepal: do monsoon floods represent disturbance? Freshwater Biology 44: 581-594.
,
The seasonal dynamics and persistence of stream macroinvertebrates in Nepal: do monsoon floods represent disturbance
,
Freshwater Biology
, vol.
44
(pg.
581
-
594
)
Brooks S. S. and Boulton A. J. 1991. Recolonisation dynamics of benthic macroinvertebrates after artificial and natural disturbances in an Australian temporary stream. Australian Journal of Marine and Freshwater Research 42: 295-308.
,
Recolonisation dynamics of benthic macroinvertebrates after artificial and natural disturbances in an Australian temporary stream
,
Australian Journal of Marine and Freshwater Research
, vol.
42
(pg.
295
-
308
)
Bureau of Meteorology. 2001. www.bom.gov.au/climate.
Calais S. S. and Kirkpatrick J. B. 1986. Impact of trampling on natural ecosystems in the Cradle Mountain - Lake St. Clair National Park. Australian Geographer 17: 6-15.
,
Impact of trampling on natural ecosystems in the Cradle Mountain - Lake St. Clair National Park
,
Australian Geographer
, vol.
17
(pg.
6
-
15
)
American Canyoneering Association. 2008. www.canyoneering.net.
Chapman M. G., Underwood A. J. and Skilleter G. A. 1995. Variability at different spatial scales between a subtidal assemblage exposed to the discharge of sewage and two control assemblages. Journal of Experimental Marine Biology and Ecology 189: 103-122.
,
Variability at different spatial scales between a subtidal assemblage exposed to the discharge of sewage and two control assemblages
,
Journal of Experimental Marine Biology and Ecology
, vol.
189
(pg.
103
-
122
)
Chessman B. C. 1986. Dietary studies of Aquatic insects from two Victorian rivers. Australian Journal of Marine and Freshwater Research 37: 129-146.
,
Dietary studies of Aquatic insects from two Victorian rivers
,
Australian Journal of Marine and Freshwater Research
, vol.
37
(pg.
129
-
146
)
Chessman B. C. 1995. Rapid assessment of rivers using macroinvertebrates: a procedure based on habitat - specific sampling, family level identification and a biotic index. Australian Journal of Ecology 20: 122-129.
,
Rapid assessment of rivers using macroinvertebrates: a procedure based on habitat - specific sampling, family level identification and a biotic index
,
Australian Journal of Ecology
, vol.
20
(pg.
122
-
129
)
Clarke K. R. 1993. Non - parametric multivariate analyses of changes in community structure. Australian Journal of Ecology 18: 117-143.
,
Non - parametric multivariate analyses of changes in community structure
,
Australian Journal of Ecology
, vol.
18
(pg.
117
-
143
)
Clarke K. R. and Warwick R. M. 1994. Change in Marine Communities: an Approach to Statistical Analysis and Interpretation. Plymouth Marine Laboratory, Natural Environment Research Council: Plymouth.
,
Change in Marine Communities: an Approach to Statistical Analysis and Interpretation
Cole DN. 1995a. Experimental trampling of vegetation: I Relationship between trampling intensity and vegetation response. Journal of Applied Ecology 32: 203-214.
,
Experimental trampling of vegetation: I Relationship between trampling intensity and vegetation response
,
Journal of Applied Ecology
, vol.
32
(pg.
203
-
214
)
Cole D. N. 1995b. Experimental trampling of vegetation: II Predictors of resistance and resilience. Journal of Applied Ecology 32: 215-224.
,
Experimental trampling of vegetation: II Predictors of resistance and resilience
,
Journal of Applied Ecology
, vol.
32
(pg.
215
-
224
)
Death R. G. and Winterbourn M. J. 1995. Diversity patterns in stream benthic invertebrate communities: the influence of habitat stability. Ecology 76: 1446-1460.
,
Diversity patterns in stream benthic invertebrate communities: the influence of habitat stability
,
Ecology
, vol.
76
(pg.
1446
-
1460
)
Department of Mines. 1966. Geological Series Sheets S1 56-5, 3e. The Department of Mines: Sydney.
,
Geological Series Sheets S1 56-5
Doeg T. J., Lake P S. and Marchant R. 1989. Colonisation of experimentally disturbed patches by stream macroinvertebrates in the Acheron River, Victoria. Australian Journal of Ecology 14: 207-220.
,
Colonisation of experimentally disturbed patches by stream macroinvertebrates in the Acheron River, Victoria
,
Australian Journal of Ecology
, vol.
14
(pg.
207
-
220
)
Downes B. J. and Keough M. J. 1998. Scaling of colonisation processes in streams: parallels and lessons from marine hard substrata. Australian Journal of Ecology 23: 8-26.
,
Scaling of colonisation processes in streams: parallels and lessons from marine hard substrata
,
Australian Journal of Ecology
, vol.
23
(pg.
8
-
26
)
European Canyoning Commission. 2008. www.cec-canyoning.org.
Flecker A. S. and Feifarek B. 1994. Disturbance and the temporal variability of invertebrate assemblages in two Andean streams. Freshwater Biology 31: 131-142.
,
Disturbance and the temporal variability of invertebrate assemblages in two Andean streams
,
Freshwater Biology
, vol.
31
(pg.
131
-
142
)
Geddes M. C. and Puckridge J. T. 1988. Survival and Growth of Larval and Juvenile Native Fish - the Importance of the Floodplain. Native Fish Management Workshop: Canberra.
,
Survival and Growth of Larval and Juvenile Native Fish - the Importance of the Floodplain
Goeft U. and Alder J. 2001. Sustainable mountain biking: a case study from the southwest of Western Australia. Journal of Sustainable Tourism 3: 193-211.
,
Sustainable mountain biking: a case study from the southwest of Western Australia
,
Journal of Sustainable Tourism
, vol.
3
(pg.
193
-
211
)
Green R. H. 1993. Application of repeated measures designs in environmental impact and monitoring studies. Australian Journal of Ecology 8: 81-98.
,
Application of repeated measures designs in environmental impact and monitoring studies
,
Australian Journal of Ecology
, vol.
8
(pg.
81
-
98
)
Growns I. O. and Davis J. A. 1991. Comparison of the macroinvertebrate communities in streams in logged and undisturbed catchments eight years after harvesting. Australian Journal of Marine and Freshwater Research 42: 689-706.
,
Comparison of the macroinvertebrate communities in streams in logged and undisturbed catchments eight years after harvesting
,
Australian Journal of Marine and Freshwater Research
, vol.
42
(pg.
689
-
706
)
Hardiman N. J. 2003. Visitor Impact Management in Canyons of the Blue Mountains, New South Wales. PhD Thesis, University of Western Sydney: South Penirth.
,
Visitor Impact Management in Canyons of the Blue Mountains, New South Wales
Hardiman, N. and Burgin, S. 2011. Effects of trampling on in-stream macroinvertebrate communities from canyoning activity in the Greater Blue Mountains World Heritage Area. Wetlands Ecology and Management. early on-line DOI 10.1007/ s11273-010-9200-4.
Hart R. C. 1985. Seasonality of aquatic invertebrates in low -latitude and southern hemisphere inland waters. Hydrobiologia 125: 151-178.
,
Seasonality of aquatic invertebrates in low -latitude and southern hemisphere inland waters
,
Hydrobiologia
, vol.
125
(pg.
151
-
178
)
Jamieson R. 2001. Canyons near Sydney. Rick Jamieson: Grose Vale.
,
Canyons near Sydney
Kay A. M. and Liddle M. J. 1989. Impact of human trampling in different zones of a coral reef flat. Environmental Management 13: 509-520.
,
Impact of human trampling in different zones of a coral reef flat
,
Environmental Management
, vol.
13
(pg.
509
-
520
)
Keough M. J. and Quinn G. P. 1998. Effects of periodic disturbances from trampling on rocky intertidal algal beds. Ecological Applications 8: 141-161.
,
Effects of periodic disturbances from trampling on rocky intertidal algal beds
,
Ecological Applications
, vol.
8
(pg.
141
-
161
)
Kuss F. R., Graefe A. R. and Vaske J. J. 1990. Visitor Impact Management: a Review of Research. Vol. 1. National Parks and Conservation Association: Washington DC.
,
Visitor Impact Management: a Review of Research. Vol. 1
Kuss F. R. and Hall C. N. 1991. Ground flora trampling studies: five years after closure. Environmental Management 15: 715-727.
,
Ground flora trampling studies: five years after closure
,
Environmental Management
, vol.
15
(pg.
715
-
727
)
Kuss F. R. and Morgan J. M. 1980. Estimating the physical carrying capacity of recreation areas: a rationale for application of the universal soil loss equation. Journal of Soil and Water Conservation 35: 87-89.
,
Estimating the physical carrying capacity of recreation areas: a rationale for application of the universal soil loss equation
,
Journal of Soil and Water Conservation
, vol.
35
(pg.
87
-
89
)
Kuss F. R. and Morgan J. M. 1984. Using the USLE to estimate the physical carrying capacity of natural areas for outdoor recreation planning. Journal of Soil and Water Conservation November -December 1984: 383-387.
Lake P. S. 2000. Disturbance, patchiness and diversity in streams. Journal of the North American Benthological Society 19: 573-592.
,
Disturbance, patchiness and diversity in streams
,
Journal of the North American Benthological Society
, vol.
19
(pg.
573
-
592
)
Liddle M. J. and Scorgie H. R. A. 1980. The effects of recreation on freshwater plants and animals: a review. Biological Conservation 17: 183-206.
,
The effects of recreation on freshwater plants and animals: a review
,
Biological Conservation
, vol.
17
(pg.
183
-
206
)
Matthaei C. D., Uehlinger U., Meyer E.I. and Frutiger A. 1996. Recolonisation by benthic invertebrates after experimental disturbance in a Swiss prealpine river. Freshwater Biology 35: 233-248.
,
Recolonisation by benthic invertebrates after experimental disturbance in a Swiss prealpine river
,
Freshwater Biology
, vol.
35
(pg.
233
-
248
)
Merritt R. W. and Cummins K. W. (Eds) 1996. An Introduction to the Aquatic Insects of North America. Kendall/Hunt Publishing Company: Dubuque.
,
An Introduction to the Aquatic Insects of North America
Molles Jr. M. C. 1985. Recovery of a stream invertebrate community from a flash flood in Tesuque Creek, New Mexico. The Southwestern Naturalist 30: 279-287.
,
Recovery of a stream invertebrate community from a flash flood in Tesuque Creek, New Mexico
,
The Southwestern Naturalist
, vol.
30
(pg.
279
-
287
)
Newsome D., Milewski A., Phillips N. and Annear R. 2002. Effects of horse riding on national parks and other natural ecosystems in Australia: implications for management. Journal of Ecotourism 1: 52-74.
,
Effects of horse riding on national parks and other natural ecosystems in Australia: implications for management
,
Journal of Ecotourism
, vol.
1
(pg.
52
-
74
)
NPWS. 1988. Blue Mountains National Park: Draft Plan of Management. New South Wales National Parks and Wildlife Service: Hurstville.
,
Blue Mountains National Park: Draft Plan of Management
NPWS. 2001. Blue Mountains National Park: Plan of Management. New South Wales National Parks and Wildlife Service: Hurstville.
,
Blue Mountains National Park: Plan of Management
Pickering C. M. and Hill W. 2007. Impacts of recreation and tourism on plant biodiversity and vegetation in protected areas in Australia. Journal of Environmental Management 85: 791-800.
,
Impacts of recreation and tourism on plant biodiversity and vegetation in protected areas in Australia
,
Journal of Environmental Management
, vol.
85
(pg.
791
-
800
)
Ream C. H. 1980. Impact of Backcountry Recreationists on Wildlife: an Annotated Bibliography. General Technical Report INT - 84, U.S. Department of Agriculture, Forest Service: Ogden.
,
Impact of Backcountry Recreationists on Wildlife: an Annotated Bibliography
Reice S. R., Wissmar R. C. and Naiman R. J. 1990. Disturbance regimes, resilience and recovery of animal communities and habitats in lotic ecosystems. Environmental Management 14: 647-659.
,
Disturbance regimes, resilience and recovery of animal communities and habitats in lotic ecosystems
,
Environmental Management
, vol.
14
(pg.
647
-
659
)
Resh V. H., Brown A. V., Covich A. P., Gurtz M. E., Li H. W., Minshall G. W., Reice S. R., Sheldon A. L., Wallace J. B. and Wissmar R. C. 1988. The role of disturbance in stream ecology. Journal of the North American Benthological Society 7: 433-455.
,
The role of disturbance in stream ecology
,
Journal of the North American Benthological Society
, vol.
7
(pg.
433
-
455
)
Reynolds L. F. 1983. Migration patterns of five fish species in the Murray-Darling River System. Australian Journal of Marine and Freshwater Research 34: 857-871.
,
Migration patterns of five fish species in the Murray-Darling River System
,
Australian Journal of Marine and Freshwater Research
, vol.
34
(pg.
857
-
871
)
Robson B. J. 1996. Small spate disturbance and the complexity of habitat architecture in Mountain River, Tasmania. Marine and Freshwater Research 47: 851-855.
,
Small spate disturbance and the complexity of habitat architecture in Mountain River, Tasmania
,
Marine and Freshwater Research
, vol.
47
(pg.
851
-
855
)
Ross P. M. 2006. Macrofaunal loss and microhabitat destruction: the impact of trampling in a temperate mangrove forest, NSW Australia. Ecology and Wetlands Management 14: 167-184.
,
Macrofaunal loss and microhabitat destruction: the impact of trampling in a temperate mangrove forest, NSW Australia
,
Ecology and Wetlands Management
, vol.
14
(pg.
167
-
184
)
Rosser Z. C. and Pearson R. G. 1995. Responses of rock fauna to physical disturbance in two Australian tropical rainforest streams. Journal of the North American Benthological Society 14: 183-196.
,
Responses of rock fauna to physical disturbance in two Australian tropical rainforest streams
,
Journal of the North American Benthological Society
, vol.
14
(pg.
183
-
196
)
Scheiner S. M. and Gurevitch J. 2001. Design and Analysis of Ecological Experiments 2e, Oxford University Press: Oxford.
,
Design and Analysis of Ecological Experiments
Sousa W. P. 1984. The role of disturbance in natural communities. Annual Review of Ecology and Systematics 15: 353-391.
,
The role of disturbance in natural communities
,
Annual Review of Ecology and Systematics
, vol.
15
(pg.
353
-
391
)
Strahler A. N. 1957. Quantitative analysis of watershed geomorphology. Transactions, American Geophysical Union 38: 913-920.
,
Quantitative analysis of watershed geomorphology
,
Transactions, American Geophysical Union
, vol.
38
(pg.
913
-
920
)
Sun D. and Liddle M. J. 1993. Trampling resistance, stem flexibility and leaf strength in nine Australian grasses and herbs. Biological Conservation 65: 35-41.
,
Trampling resistance, stem flexibility and leaf strength in nine Australian grasses and herbs
,
Biological Conservation
, vol.
65
(pg.
35
-
41
)
Townsend C. R. 1989. The patch dynamics concept of stream community ecology. Journal of the North American Benthological Society 8: 36-50.
,
The patch dynamics concept of stream community ecology
,
Journal of the North American Benthological Society
, vol.
8
(pg.
36
-
50
)
Underwood A. J. 1997. Experiments in Ecology. Cambridge University Press: Cambridge.
,
Experiments in Ecology
Williams W. D. 1980. Australian Freshwater Life. MacMillan Education Australia Pty. Ltd.: South Yarra.
,
Australian Freshwater Life
Wolfenden J. 2005. Human impacts on Claustral Canyon. MSc(Hons) Thesis, University of Western Sydney: Richmond.
,
Human impacts on Claustral Canyon. MSc(Hons) Thesis
Woodford J. 2000. The Wollemi Pine. Text Publishing: Melbourne.
,
The Wollemi Pine
Wright I. A. and Burgin, S. 2009. Comparison of sewage and coal-mine wastes on stream macroinvertebrates within an otherwise clean upland catchment, Southeastern Australia. Journal of Water, Air and Soil Pollution 204: 227-241.
,
Comparison of sewage and coal-mine wastes on stream macroinvertebrates within an otherwise clean upland catchment, Southeastern Australia
,
Journal of Water, Air and Soil Pollution
, vol.
204
(pg.
227
-
241
)
Wright I. A., Chessman B. C., Fairweather P.G. and Benson L. J. 1995. Measuring the impact of sewage effluent on the macroinvertebrate community of an upland stream: the effect of different levels of taxonomic resolution and quantification. Australian Journal of Ecology 20: 42-149.
,
Measuring the impact of sewage effluent on the macroinvertebrate community of an upland stream: the effect of different levels of taxonomic resolution and quantification
,
Australian Journal of Ecology
, vol.
20
(pg.
42
-
149
)
Yount D. J. and Niemi G. J. 1990. Recovery of lotic communities and ecosystems from disturbance - a narrative review of case studies. Environmental Management 14: 547-569.
,
Recovery of lotic communities and ecosystems from disturbance - a narrative review of case studies
,
Environmental Management
, vol.
14
(pg.
547
-
569
)
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