caa a22 4500 605516553 CHVBK 20210128100714.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s10533-015-0080-9 doi (NATIONALLICENCE)springer-10.1007/s10533-015-0080-9 Macrophyte root and rhizome decay: the impact of nutrient enrichment and the use of live versus dead tissue in decomposition studies [Elektronische Daten] [Jenise Snyder, Eliška Rejmánková] The decomposition of roots and rhizomes of two macrophytes, Eleocharis cellulosa and Typha domingensis, was studied in oligotrophic phosphorus (P) limited marshes of northern Belize. The experiment was conducted in long-term control and P enriched plots in five limestone-based inland marshes. Decomposition of naturally senescent root and rhizome litter was studied over 9months using litterbags. Belowground litter was acquired by growing plants in unenriched (control) or P enriched marsh soils for 5months. Plants were then allowed to naturally senesce using a split root design, which promoted nutrient retranslocation. The resulting senescent litter had 30% higher C:P and 40% lower P content than living roots and rhizomes. There were no differences in C:N among treatments or senescent versus live litter. Litterbags, filled with control or enriched root and rhizome litter, were buried in the upper 10-14cm soil in the corresponding plot of each marsh. Differences in the rate of decay between species were greatest for rhizome tissue, with Typha decaying more than twice as fast as Eleocharis. For both species, however, tissue P enrichment had no effect on coarse root and rhizome decay. Enhanced root production from P enrichment, coupled with no change in decay, should lead to enhanced accretion over time. Additional tests, using litterbags filled with living roots and rhizomes, yielded dramatically different results between treatments compared to senescent tissue. Results from senescent belowground tissue also differed from shoot decomposition. Caution should be exercised when inferring belowground decomposition from live tissue and aboveground rates of decay. Springer International Publishing Switzerland, 2015 Decomposition nationallicence Eleocharis nationallicence Root nationallicence Rhizome nationallicence Typha nationallicence Phosphorus nationallicence Live and senescent tissue nationallicence Snyder Jenise Biology Department, Ursuline College, 2550 Lander Road, 44124, Pepper Pike, OH, USA aut Rejmánková Eliška Department of Environmental Science and Policy, University of California, Davis, One Shields Avenue, 95616, Davis, CA, USA aut Biogeochemistry Springer International Publishing 124/1-3(2015-05-01), 45-59 0168-2563 124:1-3<45 2015 124 10533 https://doi.org/10.1007/s10533-015-0080-9 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/s10533-015-0080-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Snyder Jenise Biology Department, Ursuline College, 2550 Lander Road, 44124, Pepper Pike, OH, USA aut NATIONALLICENCE 700 1- Rejmánková Eliška Department of Environmental Science and Policy, University of California, Davis, One Shields Avenue, 95616, Davis, CA, USA aut NATIONALLICENCE 773 0- Biogeochemistry Springer International Publishing 124/1-3(2015-05-01), 45-59 0168-2563 124:1-3<45 2015 124 10533