Vulnerability of geoheritage sites in South Africa to climate change: Examples from the Eastern Cape Province

The Gua Ikan Karst Complex (GIKC) is one of the geosite in the Stong Geopark. It consists of spectacular Middle Permian–Late Triassic Gua Musang Formation karst topography, represented by four (4) caves i.e., Gua Ikan, Gua Keris, Gua Pagar, and Gua Gelap. The GIKC can be potentially developed for nature-based tourism since it holds great geoheritage values. The aim of this research is to evaluate the current state of geotourism condition (qualitatively/quantitatively) and geoheritage features of the GIKC using two (2) values in the Modified Geosite Assessment Model (M- GAM) i.e., the Main Value (MV) and Additional Value (AV). The results indicate that the GIKC offers high Scientific/Educational Value (VSE); in the aspect of karst geomorphology (underground river caves, valley/wang, cave chambers, unique shape of stalactite/stalagmite/columns), lithology (metamorphosed limestone of the Gua Musang Formation and the Taku Shist), and palaeogeographic features (coral fossils, sea notch). In summary, the Total Main Value (∑MV) are Gua Ikan (9.73), Gua Keris (9.39), Gua Pagar (9.27) and Gua Gelap (8.66). The Total Additional Value (∑AV) are Gua Ikan (11.56), Gua Keris (11.25), Gua Pagar (11.04) and Gua Gelap (10.98). This paper’s findings reveal a comprehensive base for the improvement, planning, and management of the GIKC to become a geotourism end-point.

An analysis and environmental interpretations of wood charcoal from the Later Stone Age deposit at Klasies River cave 1, Tsitsikamma Coast

Revisiting cremation practices of the Pastoral Neolithic in Kenya

Karst systems, such as caves, provide a unique opportunity to study the groundwater from the inside in contrast to spring studies, where hydrographs, chemographs, and thermographs show an integrated signal from the entire catchment and aquifer. Studies from karst springs show that recharge and conduit characteristics significantly influence how the temperature signal is transmitted and thus could inform on the structure of underground flow paths. Here, we present monitoring temperature data from a two-year-long study of a 10 km long river cave, Maaras, in northern Greece. Our data from five measuring stations along the cave stream show how different flow paths transform the temperature signal. The catchment area consists of a polje impacting the recharge conditions that change seasonally from diffuse to concentrated. Diffuse recharge stabilizes the temperature regardless of the conduit conditions. However, temperature fluctuations occur on four different time scales: seasonal, event-based, diurnal, and hourly, indicating different passage conditions. Interaction between the cave stream and the in-cave porous aquifer in the clastic sediments strongly impacts the alteration of the thermal signal through the cave: temperature fluctuations are damped, and the temperature is raised.

The Ecotone of River Cave, a Boon for the Fisherman: a Case Study of Mandhip Khol Cave Complex of Chhattisgarh, India

Hidden River Cave, located in the city of Horse Cave, Ky., forms one of the main tributaries of the Hidden River groundwater subbasin that spans multiple counties in south-central Kentucky. Hidden River Cave formed in Mississippian-aged carbonates and consists of a dendritic network of canyons and collapsed domes; a major trunk stream flows through the cave that supports myriad subsurface ecosystems and recharges the Mammoth Cave aquifer and the Green River, important water resources on which several communities depend. Poor land-use practices historically have contaminated the cave stream. As a result, the hydrology of the Hidden River groundwater subbasin has been extensively studied using fluorescent dye-tracing, and developments in groundwater resource management have improved cave conditions. However, land-use boundaries that intersect with areas of recharge still influence contaminant transport to groundwater. This study combined groundwater dye-tracing, high-resolution stage data collection, and supervised classification in a geographic information system (GIS) to assess land-use impacts on the hydrology of the Hidden River groundwater subbasin. Dye-tracing confirmed that stormwater infrastructure in Horse Cave discharges to Hidden River Cave, and, subsequently, the Hidden River groundwater subbasin. High-resolution stage data determined that the cave’s major trunk streams respond to precipitation within 40 minutes to 1.5 hours, while baselevel conditions, except after sustained precipitation, are met three to four days after precipitation ends. Supervised classification determined that development is concentrated in Horse Cave and has increased by approximately 7 % between 1989 and 2017. These results suggest opportunities for the implementation of karst-specific stormwater management regulations where such regulations are weak.

Relative humidity (RH) was measured at hourly intervals for approximately one year in two caves at seven stations near Playa del Carmen in Quintana Roo, Mexico. Sistema Muévelo Rico is a 1.1 km long cave with 12 entrances and almost no dark zone. Río Secreto (Tuch) is a large river cave with more than 40 km of passages, and an extensive dark zone. Given the need for cave specialists to adapt to saturated humidity, presumably by cuticular thinning, the major stress of RH would be its deviation from saturation. RH in Río Secreto (Tuch) was invariant at three sites and displayed short deviations from 100% RH at the other four sites. These deviations were concentrated at the end of the nortes and beginning of the rainy season. Three of the sites in Sistema Muévelo Rico showed a similar pattern although the timing of the deviations from 100% RH was somewhat displaced. Four sites in Sistema Muévelo Rico were more variable, and were analyzed using a measure of amount of time of deviation from 100% RH for each 24 hour period. Strong seasonality was evident but, remarkably, periods of constant high humidity were not the same at all sites. In most Sistema Muévelo Rico sites, there was a detectable 24 hour cycle in RH, although it was quite weak in about half of them. For Río Secreto (Tuch) only one site showed any sign of a 24 hour cycle. The troglomorphic fauna was more or less uniformly spread throughout the caves and did not concentrate in any one area or set of RH conditions. Compared to temperature, RH is much more constant, perhaps even more constant than the amount of light. However, changes in RH as a result of global warming may have a major negative effect on the subterranean fauna.

The microbial community of a biofilm lining the wall of a pristine cave in Western New Guinea

The palaeoecology of Klasies River, South Africa: An analysis of the large mammal remains from the 1984–1995 excavations of Cave 1 and 1A

Anthropogenic events captured within sediment in Hidden River Cave, Kentucky

Cooked starchy food in hearths ca. 120 kya and 65 kya (MIS 5e and MIS 4) from Klasies River Cave, South Africa

The cave population of Chaerilus Simon, 1877 from Palawan, Philippines, and description of a new species (Scorpiones: Chaerilidae)

A new stygobitic sesarmid crab species is described from underground freshwater cave streams in the southern Malang karst range on the south coast of East Java Province, Indonesia. Karstarma malang n. sp. is morphologically most similar to K. jacobsoni (Ihle, 1912) from an underground river cave system in the southern coast of the Special Region of Yogyakarta Province in central Java, but differs in having a relatively larger cornea, less swollen ocular peduncle which lacks a ridge along the median part, proportionately shorter ambulatory legs and a more slender male first gonopod. This paper increases the number of the species of Karstarma Davie Ng, 2007, to 16; the new species being the eighth of the genus from Indonesia. It is also the third species which has a distinctly reduced cornea.

Mc1r gene in Astroblepus pholeter and Astyanax mexicanus: Convergent regressive evolution of pigmentation across cavefish species

Abstract A new cave-dwelling huntsman spider species from Palawan, Philippines is described: Heteropoda simoneallmannae sp. nov. (female) from the Puerto Princesa Underground River Cave system. It represents, besides H. steineri Bayer & Jager, 2009 from Laos, the second species within the genus with true cave adaptations like reduction of eye size and pigments.

Cave, KentuCKy u.s.a.

26 sites with Pre-Columbian (Taíno) rock art are known in Jamaica, most with petroglyphs only, but there are four with painted images, and three of these are discussed: Mountain River Cave, Potoo Hole, and Spot Valley Cave. In addition, an account is given of the Warminster rock shelter, which has petroglyphs described as among the best remaining in Jamaica. Spot Valley Cave was newly surveyed in 2005, with the help of the Jamaican Caves Organization, and in the same year a rescue operation to restore the Warminster petroglyphs was carried out, in cooperation with Dr Johannes Loubser. Comparisons are made, where appropriate, to Taíno artefacts in different materials, and also to Pre-Columbian images on other islands in the Caribbean, notably Puerto Rico. The interpretation of the Taíno images, in Jamaica and elsewhere, relies to a considerable extent on the “Account of the Antiquities of the Indians”, compiled by Fray Ramón Pané in 1494-1498, on the express instructions of Columbus. Whatever the shortcomings of a narrative compiled by an outsider, we would be much worse off without it.


 
 
 Palaeomagnetic data from Klasies River main site Cave 1 (Eastern Cape Province, South Africa) are reported. Natural remanent magnetisation directions obtained from 77 oriented samples were determined by progressive alternating field demagnetisation methodology. Three palaeomagnetic samplings from the Witness Baulk from the Middle Stone Age (MSA) Late Pleistocene White Sand member and the Holocene Later Stone Age (LSA) middens in Cave 1 were dated and analysed to obtain the palaeomagnetic directions recorded in the sediments. Here we provide new optically stimulated luminescence (OSL) dates for the White Sand Member, and new accelerator mass spectrometry (AMS) radiocarbon dates for the LSA midden of areas not previously dated. The palaeomagnetic analysis took into account rock magnetism and directional analysis. The former reveals that the main magnetic carrier was magnetite; the latter shows that characteristic remanent magnetisation of normal and anomalous directions was observed in the lower portion of the White Sand Member and LSA midden. Normal directions correspond to the palaeosecular variation record for South Africa during the Late Pleistocene. On the other hand, the anomalous directions recorded in the LSA midden might represent the likely Sterno-Etrussia geomagnetic field excursion which occurred during the Late Holocene and is observed in other places on the planet. Finally, the directional data obtained are a potential tool for discussing the age of deposits corresponding to those periods.
 
 
 
 
 Significance: 
 
 
 
 New dates confirm and extend previous age determinations for the LSA and White Sand Member from Klasies River
 
 
 

Diagnosing a possible case of juvenile idiopathic arthritis: A palaeopathology study from the Ishkeenickh River Cave Site