caa a22 4500 605480591 CHVBK 20210128100416.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s11099-015-0086-5 doi (NATIONALLICENCE)springer-10.1007/s11099-015-0086-5 Easy-to-make portable chamber for in situ CO2 exchange measurements on biological soil crusts [Elektronische Daten] [M. Ladrón De Guevara, R. Lázaro, J. Quero, S. Chamizo, F. Domingo] Commercial chambers for in vivo gas exchange are usually designed to measure on vascular plants, but not on cryptogams and other organisms forming biological soil crusts (BSCs). We have therefore designed two versions of a chamber with different volumes for determining CO2 exchange with a portable photosynthesis system, for three main purposes: (1) to measure in situ CO2 exchange on soils covered by BSCs with minimal physical and microenvironmental disturbance; (2) to acquire CO2-exchange measurements comparable with the most widely employed systems and methodologies; and (3) to monitor CO2 exchange over time. Different configurations were tested in the two versions of the chamber and fluxes were compared to those measured by four reference commercial chambers: three attached to two respirometers, and a conifer chamber attached to a portable photosynthesis system. Most comparisons were done on biologically crusted soil samples. When using devices in a closed system, fluxes were higher and the relationships to the reference chambers were weaker. Nevertheless, high correlations between our chamber operating in open system and measurements of commercial respiration and photosynthetic chambers were found in all cases (R 2 > 0.9), indicating the suitability of the chamber designed for in situ measurements of CO2 gas exchange on BSCs. The Institute of Experimental Botany, 2015 chamber nationallicence cyanobacteria nationallicence infrared gas analyzer nationallicence lichen nationallicence moss nationallicence net photosynthesis nationallicence soil respiration nationallicence BSC(s) : biological soil crust(s) nationallicence [CO2] : CO2 concentration nationallicence IRGA : infrared gas analyzer nationallicence RH : relative humidity nationallicence Ladrón De Guevara M. Departamento de Desertificación y Geoecología, Estación Experimental de Zonas Áridas., Consejo Superior de Investigaciones Científicas (CSIC), Carretera de Sacramento, s/n, 04120, La Cañada de San Urbano-Almería, Spain aut Lázaro R. Departamento de Desertificación y Geoecología, Estación Experimental de Zonas Áridas., Consejo Superior de Investigaciones Científicas (CSIC), Carretera de Sacramento, s/n, 04120, La Cañada de San Urbano-Almería, Spain aut Quero J. Departamento de Ingeniería Forestal, Escuela Técnica Superior de Ingeniería Agronómica y de Montes (ETSIAM), Universidad de Córdoba, Campus de Rabanales, Crta. N-IV km. 396, 14071, Córdoba, Spain aut Chamizo S. Departamento de Desertificación y Geoecología, Estación Experimental de Zonas Áridas., Consejo Superior de Investigaciones Científicas (CSIC), Carretera de Sacramento, s/n, 04120, La Cañada de San Urbano-Almería, Spain aut Domingo F. Departamento de Desertificación y Geoecología, Estación Experimental de Zonas Áridas., Consejo Superior de Investigaciones Científicas (CSIC), Carretera de Sacramento, s/n, 04120, La Cañada de San Urbano-Almería, Spain aut Photosynthetica The Institute of Experimental Biology of the Czech Academy of Sciences 53/1(2015-03-01), 72-84 0300-3604 53:1<72 2015 53 11099 https://doi.org/10.1007/s11099-015-0086-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11099-015-0086-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ladrón De Guevara M. Departamento de Desertificación y Geoecología, Estación Experimental de Zonas Áridas., Consejo Superior de Investigaciones Científicas (CSIC), Carretera de Sacramento, s/n, 04120, La Cañada de San Urbano-Almería, Spain aut NATIONALLICENCE 700 1- Lázaro R. Departamento de Desertificación y Geoecología, Estación Experimental de Zonas Áridas., Consejo Superior de Investigaciones Científicas (CSIC), Carretera de Sacramento, s/n, 04120, La Cañada de San Urbano-Almería, Spain aut NATIONALLICENCE 700 1- Quero J. Departamento de Ingeniería Forestal, Escuela Técnica Superior de Ingeniería Agronómica y de Montes (ETSIAM), Universidad de Córdoba, Campus de Rabanales, Crta. N-IV km. 396, 14071, Córdoba, Spain aut NATIONALLICENCE 700 1- Chamizo S. Departamento de Desertificación y Geoecología, Estación Experimental de Zonas Áridas., Consejo Superior de Investigaciones Científicas (CSIC), Carretera de Sacramento, s/n, 04120, La Cañada de San Urbano-Almería, Spain aut NATIONALLICENCE 700 1- Domingo F. Departamento de Desertificación y Geoecología, Estación Experimental de Zonas Áridas., Consejo Superior de Investigaciones Científicas (CSIC), Carretera de Sacramento, s/n, 04120, La Cañada de San Urbano-Almería, Spain aut NATIONALLICENCE 773 0- Photosynthetica The Institute of Experimental Biology of the Czech Academy of Sciences 53/1(2015-03-01), 72-84 0300-3604 53:1<72 2015 53 11099