Vegetation and environmental patterns on soils derived from Hawkesbury Sandstone and Narrabeen substrata in Ku-ring-gai Chase National Park, New South Wales

Article

Le Brocque, Andrew F. and Buckney, Rodney T.. 1995. "Vegetation and environmental patterns on soils derived from Hawkesbury Sandstone and Narrabeen substrata in Ku-ring-gai Chase National Park, New South Wales." Austral Ecology: a journal of ecology in the Southern Hemisphere. 20 (2), pp. 229-238. https://doi.org/10.1111/j.1442-9993.1995.tb00534.x
Article Title

Vegetation and environmental patterns on soils derived from Hawkesbury Sandstone and Narrabeen substrata in Ku-ring-gai Chase National Park, New South Wales

ERA Journal ID3204
Article CategoryArticle
AuthorsLe Brocque, Andrew F. (Author) and Buckney, Rodney T. (Author)
Journal TitleAustral Ecology: a journal of ecology in the Southern Hemisphere
Journal Citation20 (2), pp. 229-238
Number of Pages10
Year1995
PublisherJohn Wiley & Sons
Place of PublicationMelbourne, Australia
ISSN1442-9985
1442-9993
Digital Object Identifier (DOI)https://doi.org/10.1111/j.1442-9993.1995.tb00534.x
Web Address (URL)http://onlinelibrary.wiley.com/doi/10.1111/aec.1995.20.issue-2/issuetoc
Abstract

[Abstract]:
The vegetation patterns in the Central Coast region of New South Wales have been extensively studied with respect to single environmental variables, particularly soil nutrients. However, few data are available on the effects of multiple environmental variables. This study examines the relationships between vegetation and multiple environmental variables in natural vegetation on two underlying rock types, Hawkesbury sandstone and Narrabeen group shales and sandstones, in Ku-ring-gai Chase National Park, Sydney. Floristic composition and 17 environmental factors were characterized using duplicate 500 m2 quadrats from fifty sites representing a wide range of vegetation types. The patterns in vegetation and environmental factors were examined through multivariate analyses: indicator species analysis was used to provide an objective classification of plant community types, and the relationships between vegetation and environmental factors within the two soil types were examined through indirect and direct gradient analyses. Eleven plant communities were identified, which showed strong agreement with previous studies. The measured environmental factors showed strong correlations with vegetation patterns: within both soil types, the measured environmental variables explained approximately 32 - 35% of the variation in vegetation. No single measured environmental variable adequately described the observed gradients in vegetation; rather, vegetation gradients showed strong correlations with complex environmental gradients. These complex environmental gradients included nutrient, moisture and soil physical and site variables. These results suggest a simple 'nutrient' hypothesis regarding vegetation patterns in the Central Coast region is inadequate to explain variation in vegetation within soil types.

Keywordsnatural vegetation
ANZSRC Field of Research 2020310308. Terrestrial ecology
310302. Community ecology (excl. invasive species ecology)
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Byline AffiliationsUniversity of Technology Sydney
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Collard, Stuart, Le Brocque, Andrew and Zammit, Charlie. 2009. "Bird assemblages in fragmented agricultural landscapes: the role of small brigalow remnants and adjacent land uses." Biodiversity and Conservation. 18 (6), pp. 1649-1670. https://doi.org/10.1007/s10531-008-9548-4
Vegetation changes following the exclusion of grazing in the Traprock region
Le Brocque, Andrew F. and Cockfield, Geoff. 2008. Vegetation changes following the exclusion of grazing in the Traprock region. Toowoomba, Australia. University of Southern Queensland, Australian Centre for Sustainable Catchments / Traprock Wool Association Inc..
Technical report: vegetation changes following the short-term exclusion of grazing in the Traprock region
Goodhew, Kellie A. and Le Brocque, Andrew F.. 2006. Technical report: vegetation changes following the short-term exclusion of grazing in the Traprock region. Toowoomba, Australia. University of Southern Queensland.
Vegetation management, grazing and arthropod assemblages in the Traprock region: interim report
Attwood, Simon J., Le Brocque, Andrew F., Cockfield, Geoff and Schumacher, Roslyn. 2005. Vegetation management, grazing and arthropod assemblages in the Traprock region: interim report. Toowoomba, Australia. University of Southern Queensland.
Technical report: effect of vegetation management on woodland communities in the Traprock region
Le Brocque, Andrew F., Goodhew, Kellie A. and Cockfield, Geoff. 2005. Technical report: effect of vegetation management on woodland communities in the Traprock region. Toowoomba, Australia. University of Southern Queensland.
Endophytic fungi associated with Australian orchids
Dearnaley, John and Le Brocque, Andrew F.. 2006. "Endophytic fungi associated with Australian orchids." Australasian Plant Conservation: Bulletin of the Australian Network for Plant Conservation. 15 (2), pp. 7-9.
Trees in a grazing landscape: vegetation patterns in sheep-grazing agro-ecosystems in Southern Queensland
Le Brocque, Andrew F., Cockfield, Geoff and Goodhew, Kellie A.. 2006. "Trees in a grazing landscape: vegetation patterns in sheep-grazing agro-ecosystems in Southern Queensland." Timmins, Susan (ed.) 3rd Joint Conference of the New Zealand Ecological Society and the Ecological Society of Australia. Wellington, New Zealand 28 Aug - 01 Sep 2006 Wellington, New Zealand.
Vegetation community responses to altered flow regimes and weed invasion in reparian woodlands of the upper condamine floodplain, Eastern Australia
Reardon-Smith, Kathryn, Le Brocque, Andrew F., House, Alan and Zammit, Charlie. 2005. "Vegetation community responses to altered flow regimes and weed invasion in reparian woodlands of the upper condamine floodplain, Eastern Australia." Miller, Craig (ed.) 2005 Conference of the Ecological Society of Australia (ESA 2005). Brisbane, Australia 28 Nov - 02 Dec 2005 Brisbane, Queensland, Australia. Ecological Society of Australia.
Vegetation management and woodland communities in the traprock sheep grazing region of Southern Queensland
Goodhew, Kellie A., Le Brocque, Andrew F. and Zammit, Charlie. 2005. "Vegetation management and woodland communities in the traprock sheep grazing region of Southern Queensland." Miller, Craig (ed.) 2005 Conference of the Ecological Society of Australia (ESA 2005). Brisbane, Australia 28 Nov - 02 Dec 2005 Brisbane, Queensland.
Ecosystem functioning across vegetation - production boundaries in brigalow (Acacia Harpophylla) in Southern Queensland
Collard, Stuart, Zammit, Charlie and Le Brocque, Andrew F.. 2005. "Ecosystem functioning across vegetation - production boundaries in brigalow (Acacia Harpophylla) in Southern Queensland." Miller, Craig (ed.) 2005 Conference of the Ecological Society of Australia (ESA 2005). Brisbane, Australia 28 Nov - 02 Dec 2005 Brisbane, Queensland.