Academic literature on the topic 'Jenolan Caves'

Within the Australian macropod genus Petrogale (rock wallabies) nine chromosomally distinct species occur along the Great Dividing Range of eastern Australia (Sharman et al. 1990; Eldridge et al. 1991a; Eldridge and Close 1992). However, Close et al. (1988) found Petrogale from the Grampians, Victoria and from Jenolan Caves, New South Wales, to be remarkably similar despite their 800 km separation (Fig. 1). Standard and C-banded karyotypes of both populations were typical of Petrogale penicillata and were identical except that one Grampians animal was heterozygous for absence of a C-band on chromosome 2. Apart from their smaller physical size, the only difference was that the Grampians animals were homozygous for a unique Pgm allele.

Although the theoretical effects of a severe reduction in effective population size (i.e. a bottleneck) are well known, relatively few empirical studies of bottlenecks have been based on extensive temporally spaced samples of a population both before and after a bottleneck. Here we describe the results of one such study, utilising the Jenolan Caves (JC) population of the brush-tailed rock-wallaby (Petrogale penicillata). When first sampled in 1985 (n = 20) the JC population comprised ~90 individuals. Subsequently the population crashed, and by 1992 only seven individuals remained. In 1996 the entire population (n = 10) was again sampled. Genetic diversity in the pre- and post-crash JC population was compared using 11 polymorphic microsatellite loci and PCR–SSCP analysis of the mitochondrial DNA control region. Only a single unique control region haplotype was detected in the pre- and post-crash JC population, although variant haplotypes were present in other P. penicillata populations. Of the 35 microsatellite alleles present in the pre-crash population, nine (26%) were lost during the bottleneck. The average number of rare alleles declined by 72%, allelic diversity was reduced by 30% and average heterozygosity declined by 10%. These observations are consistent with theoretical predictions. Additional analyses revealed that a P.�penicillata female at Wombeyan Caves was the only survivor of a 1990/91 reintroduction attempt using animals from JC. Of the microsatellite alleles detected in this female, 21% (4/19) were no longer present in the post-crash JC population. Furthermore, the genetic profiles of animals from the recently discovered Taralga population indicate that they are not derived from JC stock, but represent a threatened remnant of a hitherto undetected natural P. penicillata population.

Many caves around the world have very high concentrations of naturally occurring 222Rn that may vary dramatically with seasonal and diurnal patterns. For most caves with a variable seasonal or diurnal pattern, 222Rn concentration is driven by bi-directional convective ventilation, which responds to external temperature contrast with cave temperature. Cavers and cave workers exposed to high 222Rn have an increased risk of contracting lung cancer. The International Commission on Radiological Protection (ICRP) has re-evaluated its estimates of lung cancer risk from inhalation of radon progeny (ICRP 115) and for cave workers the risk may now (ICRP 137) be 4–6 times higher than previously recognized. Cave Guides working underground in caves with annual average 222Rn activity > 1,000 Bq/m3 and default ICRP assumptions (2,000 workplace hours per year, equilibrium factor F = 0.4, dose conversion factor DCF = 14 µSv/(kBq h m-3) could now receive a dose of > 20 mSv/y. Using multiple gas tracers (d13 C--CO2, Rn and N2O), linked weather, source gas flux chambers, and convective air flow measurements a previous study unequivocally identified the external soil above Chifley Cave as the source of cave 222Rn. If the source of 222Rn is external to the cave, a strategy to lower cave 222Rn by passively decreasing summer pattern convective ventilation, which draws 222Rn into caves, is possible without harming the cave environment. A small net annual average temperature difference (warmer cave air) due to geothermal heat flux produces a large net annual volumetric air flow bias (2–5:1) favoring a winter ventilation pattern that flushes Rn from caves with ambient air. Rapid anthropogenic climate change over decades may heat the average annual external temperature relative to the cave temperature that is stabilized by the thermal inertia of the large rock mass. Relative external temperature increases due to climate change (Jenolan Caves, 2008–2018, 0.17°C) reduces the winter pattern air flow bias and increases Rn concentration in caves.

Many of the places that people value are the places they wish to visit and experience for themselves. However, each person that visits one of these places can cause impacts that reduce its value. A fimdamental aim of visitor management therefore is to ensure that each visitor's experience is a high quality one, and is sustainable. Various models have been designed to assist with this aim by linking visitor management planning, monitoring and decision making. However, there is a lack of published examples of how visitor management models have been implemented, what results they have yielded, and how well they have performed. There is also a lack of evidence of widespread application of such models. Without information and insight, there is only a theoretical case to argue for the greater use of visitor management models. The aim of this study was therefore to describe, analyse and explain the formulation and implementation of the most widely published visitor management models, with reference to case studies of Jenolan Caves (New South Wales) and Kangaroo Island (South Australia). The study involved: a literature review; personal observations by the author; in-depth interviews with those involved in developing and implementing the two case studies; and an objective analysis using a Goals Achievement Matrix. The thesis critically examined seven visitor management models with respect to their: evolution and definition; dimensions and planning and development approaches; documented applications in Australia and overseas; and limitations. This would appear to be the first time that these models have been critically examined in this way so that comparisons can be easily made between them. This would also appear to be the most comprehensive identification of examples of implemented visitor management models in Australia. The study identified five critical issues relating to development and implementation of visitor management models: 1. Poor planning hmeworks and poorly defined organisational culture, particularly in visitor and tourism management. 2. Lack of, or inconsistent human and financial resources. 3. Resistance to involving stakeholders in fimdamental decision-making. 4. Difficulty in choosing the right model for the situation. 5. Lack of strategic emphasis and technical ability. The study suggested that more effort needed to be made in the pre-development and implementation phases. Critical to such efforts is the development of an implementation plan, written as part of the development process. The implementation plan requires an individual(s) to take on a strategic coordination role that addresses marketing, staff development, budgeting, evaluation and areas for improvement. The study suggested that the conventional emphasis on technical expertise needs to be re-balanced with political skills to lobby for and protect the human and financial resources needed to implement a model long enough for it to prove its value. In the event where resourcing is too limited to fully operationalise an entire model at once, it was recommended to conservatively develop a portion of the chosen model all the way to the stage in which it delivers results that can be marketed to stakeholders. Finally, the study proposed a tool to assist visitor managers to clarify their need for a model, as well as their capability to develop and implement one. In the absence of sufficient information about the implementation of models, the tool empowers managers to consider the - merits of using a visitor management model further, and to select a model that best meets their needs.

Abstract Aragonite is a minor secondary mineral in many limestone caves throughout the world. It has been claimed that it is the second-most common cave mineral after calcite (Hill & Forti 1997). Aragonite occurs as a secondary mineral in the vadose zone of some caves in New South Wales. Aragonite is unstable in fresh water and usually reverts to calcite, but it is actively depositing in some NSW caves. A review of current literature on the cave aragonite problem showed that chemical inhibitors to calcite deposition assist in the precipitation of calcium carbonate as aragonite instead of calcite. Chemical inhibitors work by physically blocking the positions on the calcite crystal lattice which would have otherwise allowed calcite to develop into a larger crystal. Often an inhibitor for calcite has no effect on the aragonite crystal lattice, thus aragonite may deposit where calcite deposition is inhibited. Another association with aragonite in some NSW caves appears to be high evaporation rates allowing calcite, aragonite and vaterite to deposit. Vaterite is another unstable polymorph of calcium carbonate, which reverts to aragonite and calcite over time. Vaterite, aragonite and calcite were found together in cave sediments in areas with low humidity in Wollondilly Cave, Wombeyan. Several factors were found to be associated with the deposition of aragonite instead of calcite speleothems in NSW caves. They included the presence of ferroan dolomite, calcite-inhibitors (in particular ions of magnesium, manganese, phosphate, sulfate and heavy metals), and both air movement and humidity. Aragonite deposits in several NSW caves were examined to determine whether the material is or is not aragonite. Substrates to the aragonite were examined, as was the nature of the bedrock. The work concentrated on Contact Cave and Wiburds Lake Cave at Jenolan, Sigma Cave, Wollondilly Cave and Cow Pit at Wombeyan and Piano Cave and Deep Hole (Cave) at Walli. Comparisons are made with other caves. The study sites are all located in Palaeozoic rocks within the Lachlan Fold Belt tectonic region. Two of the sites, Jenolan and Wombeyan, are close to the western edge of the Sydney Basin. The third site, Walli, is close to a warm spring. The physical, climatic, chemical and mineralogical influences on calcium carbonate deposition in the caves were investigated. Where cave maps were unavailable, they were prepared on site as part of the study. %At Jenolan Caves, Contact Cave and Wiburds Lake Cave were examined in detail, %and other sites were compared with these. Contact Cave is located near the eastern boundary of the Late Silurian Jenolan Caves Limestone, in an area of steeply bedded and partially dolomitised limestone very close to its eastern boundary with the Jenolan volcanics. Aragonite in Contact Cave is precipitated on the ceiling as anthodites, helictites and coatings. The substrate for the aragonite is porous, altered, dolomitised limestone which is wedged apart by aragonite crystals. Aragonite deposition in Contact Cave is associated with a concentration of calcite-inhibiting ions, mainly minerals containing ions of magnesium, manganese and to a lesser extent, phosphates. Aragonite, dolomite and rhodochrosite are being actively deposited where these minerals are present. Calcite is being deposited where minerals containing magnesium ions are not present. The inhibitors appear to be mobilised by fresh water entering the cave as seepage along the steep bedding and jointing. During winter, cold dry air pooling in the lower part of the cave may concentrate minerals by evaporation and is most likely associated with the ``popcorn line'' seen in the cave. Wiburds Lake Cave is located near the western boundary of the Jenolan Caves Limestone, very close to its faulted western boundary with Ordovician cherts. Aragonite at Wiburds Lake Cave is associated with weathered pyritic dolomitised limestone, an altered, dolomitised mafic dyke in a fault shear zone, and also with bat guano minerals. Aragonite speleothems include a spathite, cavity fills, vughs, surface coatings and anthodites. Calcite occurs in small quantities at the aragonite sites. Calcite-inhibitors associated with aragonite include ions of magnesium, manganese and sulfate. Phosphate is significant in some areas. Low humidity is significant in two areas. Other sites briefly examined at Jenolan include Glass Cave, Mammoth Cave, Spider Cave and the show caves. Aragonite in Glass Cave may be associated with both weathering of dolomitised limestone (resulting in anthodites) and with bat guano (resulting in small cryptic forms). Aragonite in the show caves, and possibly in Mammoth and Spider Cave is associated with weathering of pyritic dolomitised limestone. Wombeyan Caves are developed in saccharoidal marble, metamorphosed Silurian Wombeyan Caves Limestone. Three sites were examined in detail at Wombeyan Caves: Sigma Cave, Wollondilly Cave and Cow Pit (a steep sided doline with a dark zone). Sigma Cave is close to the south east boundary of the Wombeyan marble, close to its unconformable boundary with effusive hypersthene porphyry and intrusive gabbro, and contains some unmarmorised limestone. Aragonite occurs mainly in a canyon at the southern extremity of the cave and in some other sites. In Sigma Cave, aragonite deposition is mainly associated with minerals containing calcite-inhibitors, as well as some air movement in the cave. Calcite-inhibitors at Sigma Cave include ions of magnesium, manganese, sulfate and phosphate (possibly bat origin), partly from bedrock veins and partly from breakdown of minerals in sediments sourced from mafic igneous rocks. Substrates to aragonite speleothems include corroded speleothem, bedrock, ochres, mud and clastics. There is air movement at times in the canyon, it has higher levels of CO2 than other parts of the cave and humidity is high. Air movement may assist in the rapid exchange of CO2 at speleothem surfaces. Wollondilly Cave is located in the eastern part of the Wombeyan marble. At Wollondilly Cave, anthodites and helictites were seen in an inaccessible area of the cave. Paramorphs of calcite after aragonite were found at Jacobs Ladder and the Pantheon. Aragonite at Star Chamber is associated with huntite and hydromagnesite. In The Loft, speleothem corrosion is characteristic of bat guano deposits. Aragonite, vaterite and calcite were detected in surface coatings in this area. Air movement between the two entrances of this cave has a drying effect which may serve to concentrate minerals by evaporation in some parts of the cave. The presence of vaterite and aragonite in fluffy coatings infers that vaterite may be inverting to aragonite. Calcite-inhibitors in the sediments include ions of phosphate, sulphate, magnesium and manganese. Cave sediment includes material sourced from detrital mafic rocks. Cow Pit is located near Wollondilly Cave, and cave W43 is located near the northern boundary of the Wombeyan marble. At Cow Pit, paramorphs of calcite after aragonite occur in the walls as spheroids with minor huntite. Aragonite is a minor mineral in white wall coatings and red phosphatic sediments with minor hydromagnesite and huntite. At cave W43, aragonite was detected in the base of a coralloid speleothem. Paramorphs of calcite after aragonite were observed in the same speleothem. Dolomite in the bedrock may be a source of magnesium-rich minerals at cave W43. Walli Caves are developed in the massive Belubula Limestone of the Ordovician Cliefden Caves Limestone Subgroup (Barrajin Group). At the caves, the limestone is steeply bedded and contains chert nodules with dolomite inclusions. Gypsum and barite occur in veins in the limestone. At Walli Caves, Piano Cave and Deep Hole (Deep Cave) were examined for aragonite. Gypsum occurs both as a surface coating and as fine selenite needles on chert nodules in areas with low humidity in the caves. Aragonite at Walli caves was associated with vein minerals and coatings containing calcite-inhibitors and, in some areas, low humidity. Calcite-inhibitors include sulfate (mostly as gypsum), magnesium, manganese and barium. Other caves which contain aragonite are mentioned. Although these were not major study sites, sufficient information is available on them to make a preliminary assessment as to why they may contain aragonite. These other caves include Flying Fortress Cave and the B4-5 Extension at Bungonia near Goulburn, and Wyanbene Cave south of Braidwood. Aragonite deposition at Bungonia has some similarities with that at Jenolan in that dolomitisation of the bedrock has occurred, and the bedding or jointing is steep allowing seepage of water into the cave, with possible oxidation of pyrite. Aragonite is also associated with a mafic dyke. Wyanbene cave features some bedrock dolomitisation, and also features low grade ore bodies which include several known calcite-inhibitors. Aragonite appears to be associated with both features. Finally, brief notes are made of aragonite-like speleothems at Colong Caves (between Jenolan and Wombeyan), a cave at Jaunter (west of Jenolan) and Wellington (240\,km NW of Sydney).

This thesis explores the relationships and resultant meanings that people have for the place of Jenolan Caves, the most visited cave tourist site in Australia. The aim of the research project was to: further our understanding of the social dimensions of caves tourism in order to comment on issues and practices related to sustainability. The question was approached from a constructionist perspective, which assumes that the world of human perception is not real in an absolute sense but is made up and shaped by cultural and linguistic constructs; it is a constructing of knowledge about reality not constructing reality itself. The findings are based on interviews with staff, visitors and other people who regularly associate with the place of Jenolan Caves. The highlight, and perhaps the most exciting finding, was the rich depth of meaning that Jenolan is given by a broad range of people. Staff and visitors articulated a sense of passion, care and physical engagement. The obvious emotion of place reflects the embodied nature of place experience, other facets of which include the active and sensual ways we interact, and make sense of places we visit. Although sight dominates the experience the sound, touch and smell in a cave are also essential ingredients of the experience. It was clear that emotion is a response we have to place; emotion is also central in the construction of Jenolan as a tourism place. In particular passion and enthusiasm oscillates between visitors and staff, creating a connection between the two and becoming a central facet of Jenolan. Emotions relating to place are also negative and there was a clear tension for many people in close association with Jenolan between protecting place and selling or using place. Two dominant discourses that people draw on to make sense of Jenolan are stewardship and commodification, these are ways of making sense of Jenolan that have different primary goals but in practice are woven together. The tension exists as a very real, expressed frustration, disillusionment, and at times anger for those that work at Jenolan. It is time this tension is acknowledged, if for no other reason than it will inevitably have an impact on the interdependent relationships that exist between staff, visitors and others. That is, a satisfactory visitor experience is vulnerable to negative changes in staff relationship to place. Within the managing organisation, and across a portion of the relevant disciplines, the embodied nature of place experience and interdependence between peoples and place is not fully recognised. It is not fully articulated within the Jenolan Caves Reserve Trust, and in likelihood is not articulated in other protected area agencies. The implications of these findings for the ongoing sustainability of protected area tourist sites, such as Jenolan Caves, is that discourses and approaches are required that open the management system to the sensual, emotional, and interdependent nature of place. A systematic monitoring approach of Visitor Impact Management has been adopted by Jenolan Caves Reserve Trust. On reflection the aim of such an approach is to enable the organisation to identify when strategies need to be altered, that is to learn. The findings indicate that much about the visitor experience is emotional and relates to discourses or ways of seeing that aren’t fully articulated in the organisation. The findings also indicate strong links between place interpretations of visitors, staff, the organisation and others. It is possible that frameworks such as Visitor Impact Management, which examine a component of place meaning in a systematic way, will facilitate solutions to many visitor related issues, but when the issues relate to tacit processes in the organisation or arise from unfamiliar discourses will not be recognised and/or dealt with. Visitor Impact Management located in the broader context of organisational learning may provide a process that opens the organisation to the full depth of place meaning, and provide tools for engaging with a broader variety of meaning-making discourses. Qualitative methodology was adopted to answer these explorative questions. Specifically ethnographic methods of data collection were used: interviews, observations, and document analysis. Semi-structured interviews were undertaken with 79 staff and locals, and 140 visitors. These were recorded through note taking, returned to respondents for inspection (not to visitors), and then coded for items that provided insight into the relationship and meaning that Jenolan had inspired.