干旱区生态环境知识资源中心(Arid): Life under quartz: Hypolithic mosses in the Mojave Desert

Arid

DOI	10.1371/journal.pone.0235928
	Life under quartz: Hypolithic mosses in the Mojave Desert
	Ekwealor, Jenna T. B.; Fisher, Kirsten M.
通讯作者	Ekwealor, JTB
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2020
卷号	15 期号:7
英文摘要	Several species of dryland cyanobacteria are known to occur as hypoliths under semi-translucent rocks. In the Mojave Desert, these organisms find refuge from intense solar radiation under milky quartz where moisture persists for a longer period of time than in adjacent soil surface habitat. Desert mosses, which are extremely desiccation-tolerant, can also occur in these hypolithic spaces, though little is known about this unique moss microhabitat and how species composition compares to that of adjacent soil surface communities. To address this question, we deployed microclimate dataloggers and collected moss samples from under and adjacent to 18 milky quartz rocks (quartz mean center thickness 26 +/- 15 mm) in a western high elevation Mojave Desert site. Light transmission through Mojave quartz rocks may be as low as 1.2%, and data from microclimate loggers deployed for five months support the hypothesis that quartz provides thermal buffering and higher relative humidity compared to the soil surface. Of the 53 samples collected from hypolith and surface microhabitats, 68% wereSyntrichia caninervis, the dominant bryophyte of the Mojave Desert biological soil crust.Tortula inermisaccounted for 28% of the samples and 4% wereBryum argenteum. In a comparison of moss community composition, we found thatS.caninerviswas more likely to be on the soil surface, though it was abundant in both microhabitats, whileT.inermiswas more restricted to hypoliths, perhaps due to protection from temperature extremes. In our study site, the differences between hypolithic and surface microhabitats enable niche partitioning betweenT.inermisandS.caninervis, enhancing alpha diversity. This work points to the need to thoroughly consider microhabitats when assessing bryophyte species diversity and modelling species distributions. This focus is particularly important in extreme environments, where mosses may find refuge from the prevailing macroclimatic conditions in microhabitats such as hypoliths.
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000555392700015
WOS关键词	UV-B TOLERANCE ; ULTRAVIOLET-RADIATION ; SYNTRICHIA-CANINERVIS ; MICROBIAL COMMUNITY ; SEX-RATIOS ; PHOTOSYNTHESIS ; BRYOPHYTES ; CYANOBACTERIA ; COLONIZATION ; ASSEMBLAGE
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
来源机构	University of California, Berkeley
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325376
作者单位	[Ekwealor, Jenna T. B.] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA; [Fisher, Kirsten M.] Calif State Univ Los Angeles, Dept Biol Sci, Los Angeles, CA 90032 USA
推荐引用方式 GB/T 7714	Ekwealor, Jenna T. B.,Fisher, Kirsten M.. Life under quartz: Hypolithic mosses in the Mojave Desert[J]. University of California, Berkeley,2020,15(7).
APA	Ekwealor, Jenna T. B.,&Fisher, Kirsten M..(2020).Life under quartz: Hypolithic mosses in the Mojave Desert.PLOS ONE,15(7).
MLA	Ekwealor, Jenna T. B.,et al."Life under quartz: Hypolithic mosses in the Mojave Desert".PLOS ONE 15.7(2020).