干旱区生态环境知识资源中心(Arid): Environmental and ecological factors influencing soil functionality of biologically crusted soils by different lichen species in drylands

Arid

DOI	10.1016/j.scitotenv.2021.148491
	Environmental and ecological factors influencing soil functionality of biologically crusted soils by different lichen species in drylands
	Miralles, Isabel; Trasar-Cepeda, Carmen; Soria, Rocio; Ortega, Raul; Lucas-Borja, Manuel Esteban
通讯作者	Miralles, I (corresponding author), Univ Almeria, Dept Agron, E-04120 Almeria, Spain. ; Miralles, I (corresponding author), Univ Almeria, Ctr Intens Mediterranean Agrosyst & Agri Food Bio, E-04120 Almeria, Spain.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	794
英文摘要	Biocrusts are an essential soil surface cover at drylands where ecosystems are especially fragile to soil degradation processes due to climatic peculiarities. In the present work, (micro)biological and physicochemical properties indicative of soil functionality were studied in two different biocrust types dominated by Dipolschistes diacapsis and Lepraria isidiata and in underlying soil at two different depths (SL1, soil layer right below the biocrusts, and SL2, soil layer underlying SL1) at the Tabernas desert (southeast Spain). The influence of climatic factors (rainfall and temperature) and general soil properties on the (micro)biological properties were also analyzed in different environmental (climatic) conditions over a period of two years. PERMANOVA analyses showed significant statistical differences (Pseudo-F = 63.9; P (perm) = 0.001) among biocrust and soil layers. Throughout the study period, enzyme activities involved in C, N, and P cycles; microbial biomass-C; basal respiration; and several properties directly related to ecosystem productivity (total organic carbon, total nitrogen, concentration of ammonium and nitrate) were higher in both biocrust types than in the underlying soil layers, showing that biocrusts improved soil functions related to nutrient cycling. These properties progressively diminished in successive soil layers under the biocrusts (biocrusts > SL1 > SL2). Biocrusts showed greater similarity to each other and to SL1 than to SL2 in (micro)biological properties. A distance-based linear model analysis showed that total organic carbon, rainfall, pH, mineralized NNH4+, and total nitrogen were the most important variables for predicting (micro)biological soil properties in biocrusts. Different biochemical behavior between the biocrusts and successive underlying soil layers has been found in wet periods. After rainfall periods, the biocrusts showed important peaks in basal soil respiration and in enzyme activities involved in C and P cycles. Nevertheless, soil biochemical properties hardly showed any peak in SL1 and did not change in SL2 despite soil moisture being higher in the soil layers below the biocrusts. Correlation analyses corroborated the existence of different relationships between soil moisture and enzymatic activities. In biocrusts, soil moisture showed a greater number of significant positive correlations with enzymes such as beta-glucosidase, invertase, and phosphomonoesterase among others, whereas in SL1 it was only correlated with cellulase and in SL2 with dehydrogenase. A change in rainfall regime, as predicted by models based on climate change in arid and semiarid zones, could affect the activity of soil enzymes in the biocrusts and underlying layers, thus aggravating the degradation of these fragile dryland ecosystems. (c) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/).
英文关键词	Lichen biocrusts Enzyme activities Soil respiration N mineralization Microbial biomass-C Climatic factors
类型	Article
语种	英语
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000691673500005
WOS关键词	MICROBIAL COMMUNITY STRUCTURE ; BIOCRUST-FORMING LICHENS ; ENZYME-ACTIVITIES ; DEHYDROGENASE-ACTIVITY ; BACTERIAL COMMUNITIES ; SUCCESSIONAL STAGES ; COLORADO PLATEAU ; TABERNAS DESERT ; SAND-DUNE ; NITROGEN
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364578
作者单位	[Miralles, Isabel; Soria, Rocio; Ortega, Raul] Univ Almeria, Dept Agron, E-04120 Almeria, Spain; [Miralles, Isabel; Soria, Rocio; Ortega, Raul] Univ Almeria, Ctr Intens Mediterranean Agrosyst & Agri Food Bio, E-04120 Almeria, Spain; [Trasar-Cepeda, Carmen] CSIC, Inst Invest Agrobiol Galicia, Dept Bioquim Suelo, Apartado 122, E-15780 Santiago De Compostela, Spain; [Lucas-Borja, Manuel Esteban] Univ Castilla La Mancha, Escuela Tecn Super Ingen Agronomos & Montes, Campus Univ, E-02071 Albacete, Spain
推荐引用方式 GB/T 7714	Miralles, Isabel,Trasar-Cepeda, Carmen,Soria, Rocio,et al. Environmental and ecological factors influencing soil functionality of biologically crusted soils by different lichen species in drylands[J],2021,794.
APA	Miralles, Isabel,Trasar-Cepeda, Carmen,Soria, Rocio,Ortega, Raul,&Lucas-Borja, Manuel Esteban.(2021).Environmental and ecological factors influencing soil functionality of biologically crusted soils by different lichen species in drylands.SCIENCE OF THE TOTAL ENVIRONMENT,794.
MLA	Miralles, Isabel,et al."Environmental and ecological factors influencing soil functionality of biologically crusted soils by different lichen species in drylands".SCIENCE OF THE TOTAL ENVIRONMENT 794(2021).