| Title | Hot spots for carbon emissions from Mediterranean fluvial networks during summer drought |
| Publication Type | Journal Article |
| Year of Publication | 2015 |
| Authors | Gómez-Gener L, Obrador B, von Schiller D, Marcé R, Casas-Ruiz JPere, Proia L, Acuña V, Catalán N, Muñoz I, Koschorreck M |
| Journal | Biogeochemistry |
| Volume | 125 |
| Pagination | 409-426 |
| Date Published | September 01 |
| Type of Article | journal article |
| ISBN Number | 1573-515X |
| Abstract | During summer drought, Mediterranean fluvial networks are transformed into highly heterogeneous landscapes characterized by different environments (i.e., running and impounded waters, isolated river pools and dry beds). This hydrological setting defines novel biogeochemically active areas that could potentially increase the rates of carbon emissions from the fluvial network to the atmosphere. Using chamber methods, we aimed to identify hot spots for carbon dioxide (CO2) and methane (CH4) emissions from two typical Mediterranean fluvial networks during summer drought. The CO2 efflux from dry beds (mean ± SE = 209 ± 10 mmol CO2 m−2 d−1) was comparable to that from running waters (120 ± 33 mmol m−2 d−1) and significantly higher than from impounded waters (36.6 ± 8.5 mmol m−2 d−1) and isolated pools (17.2 ± 0.9 mmol m−2 d−1). In contrast, the CH4 efflux did not significantly differ among environments, although the CH4 efflux was notable in some impounded waters (13.9 ± 10.1 mmol CH4 m−2 d−1) and almost negligible in the remaining environments (mean |
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Hot spots for carbon emissions from Mediterranean fluvial networks during summer drought
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