Easy-to-make portable chamber for in situ CO2 exchange measurements on biological soil crusts

Title:

Easy-to-make portable chamber for in situ CO2 exchange measurements on biological soil crusts

Creator:

Ladrón De Guevara, M., Lázaro, R., Quero, J. L., Chamizo, S., and Domingo, F.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:52aa29a3-dc8d-4f4a-82ae-46d03c6cab41
uuid:52aa29a3-dc8d-4f4a-82ae-46d03c6cab41
issn:0300-3604
doi:10.1007/s11099-015-0086-5

Subject:

lišejníky, mechy, photosynthesis, lichenes, Španělsko, Spain, cyanobacteria, infrared gas analyzer, moss, net photosynthesis, soil respiration, chamber, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

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 (R2 > 0.9), indicating the suitability of the chamber designed for in situ measurements of CO2 gas exchange on BSCs., M. Ladrón De Guevara, R. Lázaro, J. L. Quero, S. Chamizo, F. Domingo., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

72-84

Source:

Photosynthetica | 2015 Volume:53 | Number:1

Harvested from:

CDK

Metadata only:

false