Next Article in Journal
Health Care Facilities Resilient to Climate Change Impacts
Previous Article in Journal
Difference in Health Inequity between Two Population Groups due to a Social Determinant of Health
Article Menu

Export Article

Open AccessArticle
Int. J. Environ. Res. Public Health 2014, 11(12), 13084-13096; doi:10.3390/ijerph111213084

Metabolic Influence of Psychrophilic Diatoms on Travertines at the Huanglong Natural Scenic District of China

Department of Geological and Mineral Engineering, Key Laboratory of Solid Waste Treatment and Resource Recycle & Fundamental Science on Nuclear Waste and Environmental Security Laboratory, Southwest University of Science and Technology, Mianyang 621010, China
Institute of Experimental Physics, Technische Universität Bergakademie Freiberg, Freiberg 09599, Germany
Huanglong National Scenic Resort Administrative Bureau, Songpan 623300, China
Department of Geology and Environmental Earth Science, Miami University, Oxford, OH 45056, USA
Author to whom correspondence should be addressed.
Received: 25 October 2014 / Revised: 25 November 2014 / Accepted: 9 December 2014 / Published: 16 December 2014
View Full-Text   |   Download PDF [1960 KB, uploaded 16 December 2014]   |  


Diatoms are a highly diversified group of algae that are widely distributed in aquatic ecosystems, and various species have different nutrient and temperature requirements for optimal growth. Here, we describe unusual psychrophilic diatoms of Cymbella in a travertine deposition environment in southwestern China in winter season. Travertine surfaces are colonized by these psychrophilic diatoms, which form biofilms of extracellular polysaccharide substances (EPS) with active metabolic activities in extremely cold conditions. The travertine in Huanglong, is a typical single crystalline calcite with anisotropic lattice distortions of unit cell parameters along axes of a and c, and this structure is suggestive of some level of metabolic mediation on mineralization. Near-edge X-ray absorption fine structure spectroscopy (NEXAFS) results further confirmed the occurrence of biogenic distortion of the crystal lattice of travertine calcite. Overall, our results imply that the metabolic influence of psychrophilic diatoms may be particularly important for promoting formation and dissolution of travertine in extremely cold environments of Huanglong. The EPS of psychrophilic diatoms will protect travertine from HCO3 etching and provide template for forming travertine when water re-flowing, in warm season. View Full-Text
Keywords: psychrophilic diatom; metabolic interactions; travertine; biomineralization; Huanglong psychrophilic diatom; metabolic interactions; travertine; biomineralization; Huanglong

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Sun, S.; Dong, F.; Ehrlich, H.; Zhao, X.; Liu, M.; Dai, Q.; Li, Q.; An, D.; Dong, H. Metabolic Influence of Psychrophilic Diatoms on Travertines at the Huanglong Natural Scenic District of China. Int. J. Environ. Res. Public Health 2014, 11, 13084-13096.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Int. J. Environ. Res. Public Health EISSN 1660-4601 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top