A global analysis of terrestrial plant litter dynamics in non-perennial waterways

Datry, T., Foulquier, A., Corti, R., von Schiller, D., Tockner, K., Mendoza-Lera, C., Clement, J.C., Gessner, M.O., Moleon, M., Stubbington, R., Gucker, B., Albarino, R., Allen, D.C., Altermatt, F., Arce, M.I., Arnon, S., Banas, D., Banegas-Medina, A., Beller, E., Blanchette, M.L., Blanco-Libreros, J.F., Blessing, J.J., Boechat, I.G., Boersma, K.S., Bogan, M.T., Bonada, N., Bond, N.R., Brintrup Barria, K.C., Bruder, A., Burrows, R.M., Cancellario, T., Canhoto, C., Carlson, S.M., Cauvy-Fraunie, S., Cid, N., Danger, M., de Freitas Terra, Bianca, De Girolamo, A.M., de La Barra, Evans, del Campo, R., Diaz-Villanueva, V.D., Dyer, F., Elosegi, A., Faye, E., Febria, C., Four, B., Gafny, S., Ghate, S.D., Gomez, R., Gomez-Gener, L., Graça, M.A.S., Guareschi, S., Hoppeler, F., Hwan, J.L., Kubheka, S., Laini, A., Langhans, S.D., Leigh, C., Little, C.J., Lorenz, S., Marshall, J.C., Martin, E., McIntosh, A.R., Meyer, E.I., Milisa, M., Mlambo, M.C., Morais, M., Moya, N., Negus, P.M., Niyogi, D.K., Papatheodoulou, A., Pardo, I., Paril, P., Pauls, S.U., Pesic, V., Polasek, M., Robinson, C.T., Rodriguez-Lozano, P., Rolls, R.J., Sanchez-Montoya, M.M., Savic, A., Shumilova, O., Shridhar, K.R., Steward, A.L., Storey, R., Taleb, A., Uzan, A., Vander Vorste, Ross, Waltham, Nathan, Woelfle-Erskine, C., Zak, D., Zarfl, C., and Zoppini, A. (2018) A global analysis of terrestrial plant litter dynamics in non-perennial waterways. Nature Geoscience, 11. pp. 497-503.

[img] PDF (Published Version) - Published Version
Restricted to Repository staff only

View at Publisher Website: https://doi.org/10.1038/s41561-018-0134-...
 
16
2


Abstract

Perennial rivers and streams make a disproportionate contribution to global carbon (C) cycling. However, the contribution of intermittent rivers and ephemeral streams (IRES), which sometimes cease to flow and can dry completely, is largely ignored although they represent over half the global river network. Substantial amounts of terrestrial plant litter (TPL) accumulate in dry riverbeds and, upon rewetting, this material can undergo rapid microbial processing. We present the results of a global research collaboration that collected and analysed TPL from 212 dry riverbeds across major environmental gradients and climate zones. We assessed litter decomposability by quantifying the litter carbon-to-nitrogen ratio and oxygen (O2) consumption in standardized assays and estimated the potential short-term CO2 emissions during rewetting events. Aridity, cover of riparian vegetation, channel width and dry-phase duration explained most variability in the quantity and decomposability of plant litter in IRES. Our estimates indicate that a single pulse of CO2 emission upon litter rewetting contributes up to 10% of the daily CO2 emission from perennial rivers and stream, particularly in temperate climates. This indicates that the contributions of IRES should be included in global C-cycling assessments.

Item ID: 55770
Item Type: Article (Research - C1)
ISSN: 1752-0908
Copyright Information: © 2018 Springer Nature Limited. All rights reserved
Date Deposited: 05 Oct 2018 00:29
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0501 Ecological Applications > 050102 Ecosystem Function @ 33%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050202 Conservation and Biodiversity @ 33%
06 BIOLOGICAL SCIENCES > 0699 Other Biological Sciences > 069902 Global Change Biology @ 34%
SEO Codes: 96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960506 Ecosystem Assessment and Management of Fresh, Ground and Surface Water Environments @ 50%
96 ENVIRONMENT > 9603 Climate and Climate Change > 960301 Climate Change Adaptation Measures @ 50%
Downloads: Total: 2
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page