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- W2060289601 abstract "Journal of PhycologyVolume 29, Issue 2 p. 133-139 CRYPTOENDOLITHIC ALGAE OF HOT SEMIARID LANDS AND DESERTS Robert A. Bell, Robert A. Bell Department of Biology and Microbiology, South Dakota State University, Brookings, South Dakota 57007Search for more papers by this author Robert A. Bell, Robert A. Bell Department of Biology and Microbiology, South Dakota State University, Brookings, South Dakota 57007Search for more papers by this author First published: April 1993 https://doi.org/10.1111/j.0022-3646.1993.00133.xCitations: 108 The author acknowledges the research assistance of M. Sommerfeld, P. Athey, and R. Slusarczyk and the critical comments on the manuscript from S. Brawley, F., Friedmann, M. Darley, and two anonymous reviewers. Question (Johansen): Many soil algae become lichenized. Do you have any evidence for the lichenization of cryptoendolithic algae in hot deserts and semiarid lands? How common are fungi in cryptoendolithic communities? Answer: Based on diagrams and pictures of cryptoendolithic lichens from Antarctica. I have probably seen several hot desert cryptoendolithic lichens. Cryptoendolithic lichens in Antarctica seem to be the dominant life form in this microhabitat, but in the deserts and semiarid lands that I have studied they are very rare. Free-living fungi do co-occur with algae in many of the cryptoendolithic habitats I have studied, and I have seen examples of hyphae that seem to be “feeding” off the algae. These may represent transitional forms leading to lichenization, but the process is much too slow for me to document. Fungi may be one of the few things that can “prey” upon these subsurface algae. Question (Johansen): Many lichens are harmed by air pollution. Has anyone demonstrated air pollution effects on cryptoendolithic algae? Answer: No, as far as I know there have been no studies in this area. It is certainly possible since there are large coal-fired plants in the American Southwest that might be precipitating pollutants onto these sandstones. There are several possible mechanisms that might ameliorate pollutant effects: the rock surfaces might adsorb some of the pollutants, the high carbonate content might serve to buffer pH changes, and the very slow growth of the algae might contribute as well. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume29, Issue2April 1993Pages 133-139 RelatedInformation" @default.
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