000845387 001__ 845387 000845387 005__ 20210129233414.0 000845387 0247_ $$2doi$$a10.1016/j.pedobi.2018.04.001 000845387 0247_ $$2ISSN$$a0031-4056 000845387 0247_ $$2ISSN$$a1873-1511 000845387 0247_ $$2Handle$$a2128/18297 000845387 0247_ $$2WOS$$aWOS:000432585500001 000845387 0247_ $$2altmetric$$aaltmetric:38941714 000845387 037__ $$aFZJ-2018-02658 000845387 041__ $$aEnglish 000845387 082__ $$a570 000845387 1001_ $$0P:(DE-Juel1)169421$$aKleefeld, Andreas$$b0$$eFirst author 000845387 245__ $$aIdentification of spatial pattern of photosynthesis hotspots in moss- and lichen-dominated biological soil crusts by combining chlorophyll fluorescence imaging and multispectral BNDVI images 000845387 260__ $$aMünchen$$bElsevier$$c2018 000845387 3367_ $$2DRIVER$$aarticle 000845387 3367_ $$2DataCite$$aOutput Types/Journal article 000845387 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1524742534_8481 000845387 3367_ $$2BibTeX$$aARTICLE 000845387 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000845387 3367_ $$00$$2EndNote$$aJournal Article 000845387 520__ $$aAlthough biological soil crusts can be found in open landscapes worldwide, their species composition depends on soil properties such as texture and pH, on microclimate, and their respective developmental stage. In addition, local variations in water holding capacity and/or chemical properties of soils influence the formation of spatial patterns and different types of biocrusts on the landscape level. For the evaluation of biocrusts functions and their impact on soil carbon pools, the analysis of the interrelationship between photosynthetic activity and the variations of spatial distribution pattern and types of biocrust is indispensable. For this purpose, an image processing approach was applied that combined chlorophyll fluorescence analyses and multispectral BNDVI to comprehensively characterize the spatial patterns of photosynthetic hotspots in biological soil crusts. For image analysis, five biological soil crust samples with different ratios of substrate, mosses and lichens were collected on an inland dune system in Lieberose, dominated by the moss Polytrichum piliferum, and the lichens Cladonia fimbriata and C. coccifera. RGB-images of the biocrusts were taken with a standard consumer camera Nikon 5200, BNDVI images with a modified Canon S110 NIR camera and chlorophyll fluorescence images with a modular open FluorCAM FC 800-O/1010, respectively. BNDVI and Fv/Fm were nearly in the same range for all biocrust samples related to the total surface area. Although mosses showed higher BNDVI than lichens within the separate biocrust samples. F0 and Fm increased with species coverage and with advancing biocrust development. Overlapping of BNDVI with F0 and Fm images showed that not all crustal organisms contribute to BNDVI and chlorophyll fluorescence. The overlapping areas of BNDVI and F0 ranged between 13% and 29%, that of BNDVI and Fm between 17% and 47%. Matching of RGB, BNDVI and CFI allows visualizing spatial pattern with high or low photosynthesis in biocrusts. 000845387 536__ $$0G:(DE-HGF)POF3-511$$a511 - Computational Science and Mathematical Methods (POF3-511)$$cPOF3-511$$fPOF III$$x0 000845387 588__ $$aDataset connected to CrossRef 000845387 7001_ $$0P:(DE-HGF)0$$aGypser, Stella$$b1$$eCorresponding author 000845387 7001_ $$00000-0002-6274-4596$$aHerppich, Werner B.$$b2 000845387 7001_ $$0P:(DE-HGF)0$$aBader, Georg$$b3 000845387 7001_ $$00000-0003-2704-2588$$aVeste, Maik$$b4 000845387 773__ $$0PERI:(DE-600)2049235-2$$a10.1016/j.pedobi.2018.04.001$$gVol. 68, p. 1 - 11$$p1 - 11$$tPedobiologia$$v68$$x0031-4056$$y2018 000845387 8564_ $$uhttps://juser.fz-juelich.de/record/845387/files/1-s2.0-S003140561730269X-main.pdf$$yRestricted 000845387 8564_ $$uhttps://juser.fz-juelich.de/record/845387/files/resGat.pdf$$yPublished on 2018-04-19. 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