TY - GEN A1 - Fischer, Thomas A1 - Kholiavko, Tatiana A1 - Schaaf, Wolfgang A1 - Veste, Maik T1 - Soil respiration responses of moss and lichen biocoenoses to moderate and severe rain events after summer drought in a temperate early-successional ecosystem T2 - Ecohydrology N2 - It is commonly accepted that CO2 efflux increases with soil water content in aerated soils and that rewetting after periods of soil drying can result in respiration pulses. It has further been shown that soil pores may become water logged which can impede soil gas exchange. The present study aimed to quantify the carbon response of moss (Polytrichum piliferum) and lichen (Cladonia coniocraea) biocoenoses to different quantities of rain in an artificial catchment, which granted that the starting point of the development of both biocoenoses was the same. To address this aim, we conducted in situ soil moisture and soil respiration measurements, where soil respiration was hypothesised to emerge from a cryptogamic vegetation layer and from mineral soil beneath. We found that higher water-holding capacity of the moss layer and higher accumulation of organic matter in the upper mineral soil under mosses result in higher amounts of water stored near the surface. As a consequence, evaporation of water as well as pulses of CO2 efflux after moderate rain following a period of drought were higher in the moss biocoenosis, where the upper mineral soil was of key importance. In contrast, the lichen biocoenosis facilitated penetration of rainwater into the deep soil. Superimposing rewetting pulses, near-saturation of soil pores with water after severe rain resulted in gas exchange inhibition and diminished soil respiration until subsequent aeration in both biocoenoses KW - biocrusts KW - Hühnerwasser KW - respiration KW - soils Y1 - 2023 U6 - https://doi.org/10.1002/eco.2578 SN - 1936-0592 VL - 16 IS - 7 ER - TY - CHAP A1 - Elmer, Michael A1 - Biemelt, Detlef A1 - Gerwin, Werner A1 - Hoberg, Karin A1 - Kleeberg, Andreas A1 - Lessmann, Dieter A1 - Schaaf, Wolfgang A1 - Schneider, Anna A1 - Zaplata, Markus K. A1 - Hüttl, Reinhard F. ED - Elmer, Michael ED - Schaaf, Wolfgang ED - Biemelt, Detlef ED - Gerwin, Werner ED - Hüttl, Reinhard F. T1 - Conclusions T2 - The artificial catchment Chicken Creek - initial ecosystem development 2005-2010 KW - Hühnerwasser KW - Künstliches Wassereinzugsgebiet Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus-23730 SP - 145 EP - 153 PB - FZLB CY - Cottbus ER -