Water availability shapes edaphic and lithic cyanobacterial communities in the Atacama Desert.

Autor: Jung P; Plant Ecology and Systematics, University of Kaiserslautern, Erwin-Schrödinger-Straße 13, 67663, Kaiserslautern, Germany., Schermer M; Plant Ecology and Systematics, University of Kaiserslautern, Erwin-Schrödinger-Straße 13, 67663, Kaiserslautern, Germany., Briegel-Williams L; Plant Ecology and Systematics, University of Kaiserslautern, Erwin-Schrödinger-Straße 13, 67663, Kaiserslautern, Germany., Baumann K; Faculty of Agricultural and Environmental Science, Soil Science, University of Rostock, Justus-von-Liebig-Weg 6, 18051, Rostock, Germany., Leinweber P; Faculty of Agricultural and Environmental Science, Soil Science, University of Rostock, Justus-von-Liebig-Weg 6, 18051, Rostock, Germany., Karsten U; Applied Ecology and Phycology, Institute of Biological Sciences, University of Rostock, Albert-Einstein-Straße 3, 18059, Rostock, Germany., Lehnert L; Faculty of Geography, Philipps-University of Marburg, Deutschhausstraße 10, 35037, Marburg, Germany., Achilles S; Faculty of Geography, Philipps-University of Marburg, Deutschhausstraße 10, 35037, Marburg, Germany., Bendix J; Faculty of Geography, Philipps-University of Marburg, Deutschhausstraße 10, 35037, Marburg, Germany., Büdel B; Plant Ecology and Systematics, University of Kaiserslautern, Erwin-Schrödinger-Straße 13, 67663, Kaiserslautern, Germany.
Jazyk: angličtina
Zdroj: Journal of phycology [J Phycol] 2019 Dec; Vol. 55 (6), pp. 1306-1318. Date of Electronic Publication: 2019 Sep 09.
DOI: 10.1111/jpy.12908
Abstrakt: In the Atacama Desert, cyanobacteria grow on various substrates such as soils (edaphic) and quartz or granitoid stones (lithic). Both edaphic and lithic cyanobacterial communities have been described but no comparison between both communities of the same locality has yet been undertaken. In the present study, we compared both cyanobacterial communities along a precipitation gradient ranging from the arid National Park Pan de Azúcar (PA), which resembles a large fog oasis in the Atacama Desert extending to the semiarid Santa Gracia Natural Reserve (SG) further south, as well as along a precipitation gradient within PA. Various microscopic techniques, as well as culturing and partial 16S rRNA sequencing, were applied to identify 21 cyanobacterial species; the diversity was found to decline as precipitation levels decreased. Additionally, under increasing xeric stress, lithic community species composition showed higher divergence from the surrounding edaphic community, resulting in indigenous hypolithic and chasmoendolithic cyanobacterial communities. We conclude that rain and fog water, respectively, cause contrasting trends regarding cyanobacterial species richness in the edaphic and lithic microhabitats.
(© 2019 The Authors. Journal of Phycology published by Wiley Periodicals, Inc. on behalf of Phycological Society of America.)
Databáze: MEDLINE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje