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Long-term monitoring of the threatened lesser guineaflower Hibbertia calycina (DC.) N.A.Wakef. (Dilleniaceae) in Tasmania

Citation

Turner, PAM and Wapstra, M and Woolley, A and Hopkins, K and Koch, AJ and Duncan, F, Long-term monitoring of the threatened lesser guineaflower Hibbertia calycina (DC.) N.A.Wakef. (Dilleniaceae) in Tasmania, Papers and Proceedings of the Royal Society of Tasmania, 154 pp. 61-82. ISSN 0080-4703 (2020) [Refereed Article]


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Copyright Statement

Copyright 2020 The Royal Society of Tasmania.

DOI: doi:10.26749/rstpp.154.61

Abstract

This paper describes the distribution of the threatened shrub Hibbertia calycina (DC.) N.A.Wakef., a distinctive plant restricted to northeast Tasmania. It compares changes over time in population size and evaluates the species response to disturbance. Results found H. calycina distribution is restricted to isolated clumps on highly insolated ridges and steep upper slopes of fine-grained Mathinna-series sedimentary rocks in dry sclerophyll forest dominated by Eucalyptus sieberi L.Johnson. Nine populations were documented with an estimated area of occupancy of 0.43 km2 and area of extent measuring 95 km2, demonstrating that the current listing of H. calycina as vulnerable is appropriate on Tasmania’s Threatened Species Protection Act 1995. We believe that the distribution of the present population is a result of natural factors (i.e., restricted habitat range and natural fire events) and anthropogenic factors (managed fire regime and illegal firewood cutting). Although frequent fire and roading have the potential to impact populations, H. calycina appears to be stable without active management in a landscape of patchy, regular, low severity fire. Our results indicate susceptibility to the soil-borne pathogen Phytophthora cinnamomi is likely less problematic than previously postulated, yet more data and research is required before management is changed.

Item Details

Item Type:Refereed Article
Keywords:fire ecology land management, Phytophthora, management, population, conservation, plantation
Research Division:Environmental Sciences
Research Group:Ecological applications
Research Field:Fire ecology
Objective Division:Environmental Management
Objective Group:Terrestrial systems and management
Objective Field:Assessment and management of terrestrial ecosystems
UTAS Author:Turner, PAM (Dr Perpetua Turner)
UTAS Author:Koch, AJ (Ms Amelia Koch)
ID Code:149420
Year Published:2020
Deposited By:Office of the School of Natural Sciences
Deposited On:2022-03-29
Last Modified:2022-05-26
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