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Publication Type J
Authors Ochoa-Hueso, R; Hernandez, RR; Pueyo, JJ; Manrique, E
Author Full Name Ochoa-Hueso, Raul; Hernandez, Rebecca R.; Pueyo, Jose J.; Manrique, Esteban
Title Spatial distribution and physiology of biological soil crusts from semi-arid central Spain are related to soil chemistry and shrub cover
Source SOIL BIOLOGY & BIOCHEMISTRY
Language English
Document Type Article
Author Keywords Aridland restoration; Pigments; Shrub microenvironment; Soil micronutrients; Soil pH
Keywords Plus SMALL-SCALE PATTERNS; VASCULAR PLANTS; VEGETATION STRUCTURE; MYCORRHIZAL FUNGI; SPECIES RICHNESS; GLOBAL CHANGE; SLOPE ASPECT; BRYOPHYTES; LICHENS; PRECIPITATION
Abstract Despite the critical role of biological soil crusts (BSCs) in arid and semi-arid ecosystem function, few studies are found concerning the most important environmental variables affecting their distribution and physiology. This study seeks to determine soil and microenvironmental factors affecting the spatial distribution and pigment production of BSC-forming lichens and mosses in open patches of a semi-arid Mediterranean kermes oak thicket. We measured late-successional BSC cover, shrub cover, distance to nearest kermes oak (to test for effects of kermes oak thicket microenvironment on BSC), and pigment concentration of one lichen (Cladonia foliacea) and one moss (Pleurochaete squarrosa) species in the Nature Reserve El Regajal-Mar de Ontigola (Central Spain). At the macroscale (>0.5 m), results showed that BSC distribution and pigments were tightly coupled to a suite of soil properties, in particular soil pH, Fe, and Ca. Specifically, soil pH had a positive relationship with the cover of five individual BSC-forming lichen species and was negatively related to pigment production in C foliacea. When pH was excluded from the analysis. Ca appeared as the main soil variable and was correlated with total BSC cover and total lichen cover. The micronutrient Fe had a significant positive relationship with the concentration of eight pigments in P. squarrosa and was also coupled with the cover of two BSC-forming lichens. Manganese, previously proposed as a key limiting micronutrient for BSCs, affected lichen diversity in a negative way. At the microscale (similar to 0.5 m), kermes oak microenvironment, shrub cover, and moss cover were determinants of BSC distribution, and total lichen and total BSC cover were overrepresented on N and E-facing shrub microsites. Our findings suggest that soil chemical variability and microsite diversity created by neighbouring vegetation affect BSC distribution in complex and essential ways and that studies aiming to explore BSC-environment relationships should be conducted at various spatial scales. Studies based on species- or group-specific responses are, thus, inadequate to unveil the main factors determining the distribution of the diverse organisms that constitute BSCs and/or to propose potential tools aiming to restore BSC in arid and semiarid ecosystems. (C) 2011 Elsevier Ltd. All rights reserved.
Author Address [Ochoa-Hueso, Raul; Manrique, Esteban] MNCN CSIC, Museo Nacl Ciencias Nat, Madrid 28006, Spain; [Hernandez, Rebecca R.] Univ Calif Riverside, Ctr Conservat Biol, Riverside, CA 92521 USA; [Pueyo, Jose J.] ICA CSIC, Inst Ciencias Agr, Madrid 28006, Spain
Reprint Address Ochoa-Hueso, R (reprint author), MNCN CSIC, Museo Nacl Ciencias Nat, C Serrano 115 Bis, Madrid 28006, Spain.
E-mail Address raul.ochoa@ccma.csic.es
ResearcherID Number Ochoa-Hueso, Raul/K-1113-2016; Ochoa-Hueso, Raul/Q-6578-2017; Pueyo, Jose/D-8993-2016
ORCID Number Ochoa-Hueso, Raul/0000-0002-1839-6926; Ochoa-Hueso, Raul/0000-0002-1839-6926; Pueyo, Jose/0000-0003-0337-4078; Manrique, Esteban/0000-0002-6565-0704
Funding Agency and Grant Number Spanish Ministerio de Educacion y Ciencia [AP2006-04638, CGL-2009-11015, AGL-2006-13848-C02-01/AGR]; Comunidad de Madrid [S-0505/AMB/0335, S-0505/AMB/00321, S-2009/AMB-1511]
Funding Text ROH was supported by an FPU grant of the Spanish Ministerio de Educacion y Ciencia (AP2006-04638). This work was made in the context of financed projects by the Comunidad de Madrid (S-0505/AMB/0335; S-0505/AMB/00321; S-2009/AMB-1511) and the Spanish Ministerio de Educacion y Ciencia (CGL-2009-11015; AGL-2006-13848-C02-01/AGR) The authors are very thankful to Raquel Santamaria and Cristina Paradela for helping during the field work and Octavio Cedenilla, Luis Cuadra and Elena Fernandez for chemical and pigment analysis. Dr. Matthew Bowker is acknowledged for his critical reading and helpful comments on an earlier version of the manuscript.
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Cited Reference Count 59
Times Cited 24
Total Times Cited Count (WoS, BCI, and CSCD) 24
Publisher PERGAMON-ELSEVIER SCIENCE LTD
Publisher City OXFORD
Publisher Address THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
ISSN 0038-0717
29-Character Source Abbreviation SOIL BIOL BIOCHEM
ISO Source Abbreviation Soil Biol. Biochem.
Publication Date SEP
Year Published 2011
Volume 43
Issue 9
Beginning Page 1894
Ending Page 1901
Digital Object Identifier (DOI) 10.1016/j.soilbio.2011.05.010
Subject Category 8
Document Delivery Number Soil Science
Unique Article Identifier Agriculture
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