Major carbon losses from degradation of Mauritia flexuosa peat swamp forests in western Amazonia
Tropical peat swamp forests are major global carbon (C) stores highly vulnerable to human intervention. In Peruvian Amazonia, palm swamps, the prevalent peat ecosystem, have been severely degraded through recurrent cutting of Mauritia flexuosa palms for fruit harvesting. While this can transform the...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2023
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| Acceso en línea: | https://hdl.handle.net/10568/135315 |
| _version_ | 1855522811679866880 |
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| author | Hergoualc'h, Kristell van Lent, J. Dezzeo, N. Verchot, L.V. van Groenigen, J.W. López Gonzales, M. Grandez-Rios, J. |
| author_browse | Dezzeo, N. Grandez-Rios, J. Hergoualc'h, Kristell López Gonzales, M. Verchot, L.V. van Groenigen, J.W. van Lent, J. |
| author_facet | Hergoualc'h, Kristell van Lent, J. Dezzeo, N. Verchot, L.V. van Groenigen, J.W. López Gonzales, M. Grandez-Rios, J. |
| author_sort | Hergoualc'h, Kristell |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Tropical peat swamp forests are major global carbon (C) stores highly vulnerable to human intervention. In Peruvian Amazonia, palm swamps, the prevalent peat ecosystem, have been severely degraded through recurrent cutting of Mauritia flexuosa palms for fruit harvesting. While this can transform these C sinks into significant sources, the magnitude of C fluxes in natural and disturbed conditions remains unknown. Here, we estimated emissions from degradation along a gradient comprising undegraded (Intact), moderately degraded (mDeg) and heavily degraded (hDeg) palm swamps. C stock changes above- and below-ground were calculated from biomass inventories and peat C budgets resulting from the balance of C outputs (heterotrophic soil respiration (Rh), dissolved C exports), C inputs (litterfall, root mortality) and soil CH4 emissions. Fluxes spatiotemporal dynamics were monitored (bi)monthly over 1–3 years. The peat budgets (Mg C ha−1 year−1) revealed that medium degradation reduced by 88% the soil sink capacity (from − 1.6 ± 1.3 to − 0.2 ± 0.8 at the Intact and mDeg sites) while high degradation turned the soil into a high source (6.2 ± 0.7 at the hDeg site). Differences stemmed from degradation-induced increased Rh (5.9 ± 0.3, 6.2 ± 0.3, and 9.0 ± 0.3 Mg C ha−1 year−1 at the Intact, mDeg, and hDeg sites) and decreased C inputs (8.3 ± 1.3, 7.1 ± 0.8, and 3.6 ± 0.7 Mg C ha−1 year−1 at the same sites). The large total loss rates (6.4 ± 3.8, 15.7 ± 3.8 Mg C ha−1 year−1 under medium and high degradation), originating predominantly from biomass changes call for sustainable management of these peatlands. |
| format | Journal Article |
| id | CGSpace135315 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace1353152025-10-26T12:52:03Z Major carbon losses from degradation of Mauritia flexuosa peat swamp forests in western Amazonia Hergoualc'h, Kristell van Lent, J. Dezzeo, N. Verchot, L.V. van Groenigen, J.W. López Gonzales, M. Grandez-Rios, J. peatlands carbon sinks degradation Tropical peat swamp forests are major global carbon (C) stores highly vulnerable to human intervention. In Peruvian Amazonia, palm swamps, the prevalent peat ecosystem, have been severely degraded through recurrent cutting of Mauritia flexuosa palms for fruit harvesting. While this can transform these C sinks into significant sources, the magnitude of C fluxes in natural and disturbed conditions remains unknown. Here, we estimated emissions from degradation along a gradient comprising undegraded (Intact), moderately degraded (mDeg) and heavily degraded (hDeg) palm swamps. C stock changes above- and below-ground were calculated from biomass inventories and peat C budgets resulting from the balance of C outputs (heterotrophic soil respiration (Rh), dissolved C exports), C inputs (litterfall, root mortality) and soil CH4 emissions. Fluxes spatiotemporal dynamics were monitored (bi)monthly over 1–3 years. The peat budgets (Mg C ha−1 year−1) revealed that medium degradation reduced by 88% the soil sink capacity (from − 1.6 ± 1.3 to − 0.2 ± 0.8 at the Intact and mDeg sites) while high degradation turned the soil into a high source (6.2 ± 0.7 at the hDeg site). Differences stemmed from degradation-induced increased Rh (5.9 ± 0.3, 6.2 ± 0.3, and 9.0 ± 0.3 Mg C ha−1 year−1 at the Intact, mDeg, and hDeg sites) and decreased C inputs (8.3 ± 1.3, 7.1 ± 0.8, and 3.6 ± 0.7 Mg C ha−1 year−1 at the same sites). The large total loss rates (6.4 ± 3.8, 15.7 ± 3.8 Mg C ha−1 year−1 under medium and high degradation), originating predominantly from biomass changes call for sustainable management of these peatlands. 2023-06 2023-12-13T06:49:03Z 2023-12-13T06:49:03Z Journal Article https://hdl.handle.net/10568/135315 en Open Access Springer Hergoualc’h, K., van Lent, J., Dezzeo, N., Verchot, L., van Groenigen, J., López Gonzales, M., & Grandez-Rios, J. (2023). Major carbon losses from degradation of Mauritia flexuosa peat swamp forests in western Amazonia. Biogeochemistry. doi: 10.1007/s10533-023-01057-4 |
| spellingShingle | peatlands carbon sinks degradation Hergoualc'h, Kristell van Lent, J. Dezzeo, N. Verchot, L.V. van Groenigen, J.W. López Gonzales, M. Grandez-Rios, J. Major carbon losses from degradation of Mauritia flexuosa peat swamp forests in western Amazonia |
| title | Major carbon losses from degradation of Mauritia flexuosa peat swamp forests in western Amazonia |
| title_full | Major carbon losses from degradation of Mauritia flexuosa peat swamp forests in western Amazonia |
| title_fullStr | Major carbon losses from degradation of Mauritia flexuosa peat swamp forests in western Amazonia |
| title_full_unstemmed | Major carbon losses from degradation of Mauritia flexuosa peat swamp forests in western Amazonia |
| title_short | Major carbon losses from degradation of Mauritia flexuosa peat swamp forests in western Amazonia |
| title_sort | major carbon losses from degradation of mauritia flexuosa peat swamp forests in western amazonia |
| topic | peatlands carbon sinks degradation |
| url | https://hdl.handle.net/10568/135315 |
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