Volume 51, Issue 1 (2022)
Articles
Low impact sampling of speleothems – reconciling scientific study with cave conservation
Claire L.V. MacGregor, John C. Hellstrom, Jon D. Woodhead, Russell N. Drysdale, and Rolan S. Eberhard
- Low impact method for speleothem sampling
- Cave conservation best practice
Speleogenesis in a lens of metamorphosed limestone and ankerite: Ochtiná Aragonite Cave, Slovakia
Pavel Bella, Pavel Bosák, Petr Pruner, Helena Hercman, Katarína Pukanská, Karol Bartoš, Ľudovít Gaál, Dagmar Haviarová, Peter Tomčík, and Šimon Kdýr
- Carbonic acid speleogenesis enhanced due to ankerite oxidation
- Solution flat ceilings and inward-inclined smooth facets in a limestone cave
- Solution facets developed in flat-roofed passages as well as in vaulted halls and passages
- The Brunhes/Matuyama boundary and Jaramillo magnetozone recorded in cave sediments
- Slow depositional rate of cave sediments determined from magnetostratigraphy data
Monitoring photosynthetic activity using in vivo chlorophyll a fluorescence in microalgae and cyanobacteria biofilms in the Nerja Cave (Malaga, Spain)
Yolanda Del Rosal, Juan Muñoz-Fernández, Paula S.M. Celis-Plá, Mariona Hernández-Mariné, Félix Álvarez-Gómez, Salvador Merino, and Félix L. Figueroa
- Monitoring of in vivo Chl a fluorescence is an efficient tool to prevent biodeterioration processes
- Photosynthetic activity is related with values of temperature, relatively humidity and CO2 in the air
- The biofilms could survive under stress environment
- Higher environmental values probably alleviate the photoinhibition as a supply in the system Irradiance is not an adequate key factor to control microorganism growth in the Nerja Cave
Guano-derived morphologies and associated minerals found in Cova de sa Guitarreta, Llucmajor, Balearics
Antonio Merino Juncadella, Joan J. Fornós, Antoni Mulet, and Joaquín Ginés
- New method for measuring unreachable morphologies and utilization of thermograph camera
- Bat-derived morphologies: Biomechanical erosion and features related to guano deposits
- Microclimate constraints on the genesis of bell holes and deposition of phosphates
- Description of guano-related cave minerals. Dichotomy between struvite and newberyite
- Acidic profiles, pH, and guano-related mineral genesis
Anthropogenic impacts on the Glowworm Cave, Waitomo, New Zealand: a microclimate management approach
Chris Hendy, David J. Merritt, and Shannon Corkill
- Waitomo Glowworm Cave is prone to anthropogenic carbon dioxide build-up
- Climatic monitoring has led to an understanding of the cave ventilation process
- Chimney-effect ventilation is managed by opening or closing an upper-level door
- Ventilation is promoted when visitors are in the cave
- Ventilation is suppressed when cool, dry external air could negatively impact the glowworms
Modeling air pressure propagation through Wind Cave and Jewel Cave: How can air pressure signals inside barometric caves be predicted from surface pressure measurements?
Annika K. Gomell and Andreas Pflitsch
- A quantitative model is developed to predict air pressure inside barometric caves
- The model can explain up to 99.7% of observed pressure variations
- Identified speleoclimatological processes comprehensively describe pressure dynamics
- Analysis reveals the effect of morphological characteristics on pressure propagation
- Results provide an explanation for observed differences in airflow dynamics
