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Bacteria, fungi and biokarst in Lechuguilla Cave, Carlsbad Caverns National Park, New Mexico

, : Bacteria, fungi and biokarst in Lechuguilla Cave, Carlsbad Caverns National Park, New Mexico. Environmental Geology. 25(1): 2-8

Lechuguilla Cave is a deep, extensive, gypsumand sulfur-bearing hypogenic cave in Carlsbad Caverns National Park, New Mexico, most of which (>90%) lies more than 300 m beneath the entrance. Located in the arid Guadalupe Mountains, Lechuguilla's remarkable state of preservation is partially due to the locally continuous Yates Formation siltstone that has effectively diverted most vadose water away from the cave. Allocthonous organic input to the cave is therefore very limited, but bacterial and fungal colonization is relatively extensive: (1)Aspergillus sp. fungi and unidentified bacteria are associated with iron-, manganese-, and sulfur-rich encrustations on calcitic folia near the suspected water table 466 m below the entrance; (2) 92 species of fungi in 19 genera have been identified throughout the cave in oligotrophic (nutrient-poor) “soils” and pools; (3) cave-air condensate contains unidentified microbes; (4) indigenous chemoheterotrophicSeliberius andCaulobacter bacteria are known from remote pool sites; and (5) at least four genera of heterotrophic bacteria with population densities near 5×105 colony-forming units (CFU) per gram are present in ceiling-bound deposits of supposedly abiogenic condensation-corrosion residues. Various lines of evidence suggest that autotrophic bacteria are present in the ceiling-bound residues and could act as primary producers in a unique subterranean microbial food chain. The suspected autotrophic bacteria are probably chemolithoautotrophic (CLA), utilizing trace iron, manganese, or sulfur in the limestone and dolomitic bedrock to mechanically (and possibly biochemically) erode the substrate to produce residual floor deposits. Because other major sources of organic matter have not been detected, we suggest that these CLA bacteria are providing requisite organic matter to the known heterotrophic bacteria and fungi in the residues. The cavewide bacterial and fungal distribution, the large volumes of corrosion residues, and the presence of ancient bacterial filaments in unusual calcite speleothems (biothems) attest to the apparent longevity of microbial occupation in this cave.


DOI: 10.1007/bf01061824

Other references

Trofaier, A.M.ria; Rees, W.G.reth; Bartsch, A.; Sabel, D.; Schlaffer, S., 2012: Feasibility study of using active microwave data for examination of thaw lake drainage patterns over the Yamal Peninsula. International Conference on Permafrost (ICOP) Proceedings 10, 1: 413-418

Reinstein, D.Z.; Aslanides, I.M.; Silverman, R.H.; Najafi, D.J.; Brownlow, R.L.; Belmont, S.; Haight, D.M.; Coleman, D.J., 1994: Epithelial and corneal 3-D ultrasound pachymetric topography post excimer laser surgery. Investigative Ophthalmology & Visual Science 35(4): 1739

Van Houcke, S.K.; Stepman, H.C.M.; Thienpont, L.M.; Fiers, T.; Stove, V.; Couck, P.; Anckaert, E.; Gorus, F., 2014: Long-term stability of laboratory tests and practical implications for quality management. Long-term stability of analytical performance is required for adequate patient management. We investigated the use of patient data to document test stability, and the relevance of observed instabilities on a surrogate medical outcome. We used mult...

Janusz, B.; Bobrzyński, J.; Furgał, M.; de Barbaro, B.; Gdowska, K., 2010: The need of qualitative research in psychiatry. The authors present basic information about qualitative research along with its theoretical frame as a useful approach in the study of many issues in the area of psychiatry and psychotherapy. According to the authors, the quantitative methodology-...

Weinrich, F., 1935: Derris Treatment of Cattle Mange. The author used preparations of derris to treat about 300 cattle affected with sarcoptic or chorioptic mange. He found that a 2 per cent, suspension of derris root containing 8 per cent, rotenone and 16 per cent, of residual extract in soapy water...

Petrucci, M.N.; MacKinnon, C.D.; Hsiao-Wecksler, E.T., 2014: Modulation of anticipatory postural adjustments of gait using a portable powered ankle-foot orthosis. Prior to taking a step, properly coordinated anticipatory postural adjustments (APAs) are generated to control posture and balance as the body is propelled forward. External cues (audio, visual, somatosensory) have been shown to facilitate gait in...

Anonymous, 1999: Congress of the European Association of Nuclear Medicine. Barcelona, Spain, 9-13 October 1999. Abstracts. European Journal of Nuclear Medicine 26(9): 961-1246

Campbell, T.A.; Sanson, T.G., 2009: Cardiac arrest and pregnancy. Cardiopulmonary arrest in pregnancy is rare occurring in 1 in 30,000 pregnancies. When it does occur, it is important for a clinician to be familiar with the features peculiar to the pregnant state. Knowledge of the anatomic and physiologic change...

Resnick S.; Tureen P., 1990: Evaluation of fluent and disfluent speech segments by stutterers and nonstutterers. This study investigated the severity ratings given by stutterers, speech pathologists, and unsophisticated listeners to videotaped speech of stutterers. The results showed that both stutterers and speech pathologists were more critical of milder d...

Tarr, M.J.; Gauthier, I., 2000: FFA: a flexible fusiform area for subordinate-level visual processing automatized by expertise. Much evidence suggests that the fusiform face area is involved in face processing. In contrast to the accompanying article by Kanwisher, we conclude that the apparent face selectivity of this area reflects a more generalized form of processing not...