caa a22 4500 606217967 CHVBK 20210128101110.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s11104-014-2348-6 doi (NATIONALLICENCE)springer-10.1007/s11104-014-2348-6 Soil respiration patterns and controls in limestone cedar glades [Elektronische Daten] [Jennifer Cartwright, Dafeng Hui] Aims: Drivers of soil respiration (R s ) in rock outcrop ecosystems remain poorly understood. We investigated these drivers in limestone cedar glades, known for their concentrations of endemic plant species and for seasonal hydrologic extremes (xeric and saturated conditions), and compared our findings to those in temperate grasslands and semi-arid ecosystems. Methods: We measured R s , soil temperature (T s ), volumetric soil water content (SWC), soil organic matter (SOM), soil depth, and vegetation cover monthly over 16mo and analyzed effects of these variables on R s . Results: Seasonally, R s primarily tracked T s (r2 = 0.77; P < 0.01), however R s was depressed during a summer drought. SOM was highly variable spatially, and incorporating SOM effects into the R s model dramatically improved model performance. Both shallow soil and sparse vegetation cover were also associated with lower R s . Conclusions: Soil depth, SOM, and vegetation cover were important drivers of R s in limestone cedar glades. Seasonal R s patterns reflected those for mesic temperate grasslands more than for semi-arid ecosystems, in that R s primarily tracked temperature for most of the year. The Author(s), 2014 Limestone cedar glades nationallicence Rock outcrop ecosystems nationallicence Soil depth nationallicence Soil organic matter nationallicence Soil moisture nationallicence Soil respiration nationallicence R s : Soil respiration nationallicence T s : Soil temperature nationallicence AIC : Akaike Information Criterion nationallicence NPS : National Park Service nationallicence SOM : Soil Organic Matter nationallicence SWC : Volumetric Soil Water Content nationallicence TDR : Time Domain Reflectometry nationallicence Cartwright Jennifer U.S. Geological Survey, Lower Mississippi-Gulf Water Science Center, 640 Grassmere Park, Suite 100, 37211, Nashville, TN, USA aut Hui Dafeng Department of Biological Sciences, Tennessee State University, 37209, Nashville, TN, USA aut Plant and Soil Springer International Publishing 389/1-2(2015-04-01), 157-169 0032-079X 389:1-2<157 2015 389 11104 https://doi.org/10.1007/s11104-014-2348-6 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/s11104-014-2348-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cartwright Jennifer U.S. Geological Survey, Lower Mississippi-Gulf Water Science Center, 640 Grassmere Park, Suite 100, 37211, Nashville, TN, USA aut NATIONALLICENCE 700 1- Hui Dafeng Department of Biological Sciences, Tennessee State University, 37209, Nashville, TN, USA aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 389/1-2(2015-04-01), 157-169 0032-079X 389:1-2<157 2015 389 11104