Academic Journal
Sediment respiration pulses in intermittent rivers and ephemeral streams
| Τίτλος: | Sediment respiration pulses in intermittent rivers and ephemeral streams |
|---|---|
| Συγγραφείς: | Schiller, D., Datry, T., Corti, R., Foulquier, A., Tockner, K., Marcé, R., García‐Baquero, G., Odriozola, I., Obrador, B., Elosegi, A., Mendoza‐Lera, C., Gessner, M. O., Stubbington, R., Albariño, 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., Boëchat, I. G., Boersma, K. S., Bogan, M. T., Bonada, N., Bond, N. R., Brintrup, K., Bruder, A., Burrows, R. M., Cancellario, T., Carlson, S. M., Cauvy‐Fraunié, S., Cid, N., Danger, M., Freitas Terra, B., Dehedin, A., De Girolamo, A. M., Campo, R., Díaz‐Villanueva, V., Duerdoth, C. P., Dyer, F., Faye, E., Febria, C., Figueroa, R., Four, B., Gafny, S., Gómez, R., Gómez‐Gener, L., Graça, M. A. S., Guareschi, S., Gücker, B., Hoppeler, F., Hwan, J. L., Kubheka, S., Laini, A., Langhans, S. D., Leigh, C., Little, C. J., Lorenz, S., Marshall, J., Martín, E. J., McIntosh, A., Meyer, E. I., Miliša, M., Mlambo, M. C., Moleón, M., Morais, M., Negus, P. |
| Στοιχεία εκδότη: | Wiley-Blackwell Publishing, 2019. |
| Έτος έκδοσης: | 2019 |
| Θεματικοί όροι: | 2300 Environmental Science, Atmospheric Science, Global and Planetary Change, 2304 Environmental Chemistry, 1902 Atmospheric Science, 2306 Global and Planetary Change, Environmental Chemistry, General Environmental Science |
| Περιγραφή: | Intermittent rivers and ephemeral streams (IRES) may represent over half the global stream network, but their contribution to respiration and carbon dioxide (CO2) emissions is largely undetermined. In particular, little is known about the variability and drivers of respiration in IRES sediments upon rewetting, which could result in large pulses of CO2. We present a global study examining sediments from 200 dry IRES reaches spanning multiple biomes. Results from standardized assays show that mean respiration increased 32‐fold to 66‐fold upon sediment rewetting. Structural equation modeling indicates that this response was driven by sediment texture and organic matter quantity and quality, which, in turn, were influenced by climate, land use, and riparian plant cover. Our estimates suggest that respiration pulses resulting from rewetting of IRES sediments could contribute significantly to annual CO2 emissions from the global stream network, with a single respiration pulse potentially increasing emission by 0.2–0.7%. As the spatial and temporal extent of IRES increases globally, our results highlight the importance of recognizing the influence of wetting‐drying cycles on respiration and CO2 emissions in stream networks. |
| Τύπος εγγράφου: | Article |
| Γλώσσα: | English |
| Σύνδεσμος πρόσβασης: | https://api.library.uq.edu.au/view/UQ:ba03296/UQba03296_OA.pdf https://api.library.uq.edu.au/view/UQ:ba03296 https://api.library.uq.edu.au/view/UQ:ba03296/thumbnail_UQba03296_OA_t.jpg https://espace.library.uq.edu.au/view/UQ:ba03296/thumbnail_UQba03296_OA_t.jpg https://espace.library.uq.edu.au/view/UQ:ba03296 https://espace.library.uq.edu.au/view/UQ:ba03296/UQba03296_OA.pdf |
| Αριθμός Καταχώρησης: | edsair.dedup.wf.002..abe1e974b79818a99e2684eea2fac09b |
| Βάση Δεδομένων: | OpenAIRE |
| Η περιγραφή δεν είναι διαθέσιμη |