Effects of Climate and Atmospheric Nitrogen Deposition on Early to Mid-Term Stage Litter Decomposition Across Biomes
Copyright policy )Effects of Climate and Atmospheric Nitrogen Deposition on Early to Mid-Term Stage Litter Decomposition Across Biomes
Litter decomposition is a key process for carbon and nutrient cycling in terrestrial ecosystems and is mainly controlled by environmental conditions, substrate quantity and quality as well as microbial community abundance and composition. In particular, the effects of climate and atmospheric nitrogen (N) deposition on litter decomposition and its temporal dynamics are of significant importance, since their effects might change over the course of the decomposition process. Within the TeaComposition initiative, we incubated Green and Rooibos teas at 524 sites across nine biomes. We assessed how macroclimate and atmospheric inorganic N deposition under current and predicted scenarios (RCP 2.6, RCP 8.5) might affect litter mass loss measured after 3 and 12 months. Our study shows that the early to mid-term mass loss at the global scale was affected predominantly by litter quality (explaining 73% and 62% of the total variance after 3 and 12 months, respectively) followed by climate and N deposition. The effects of climate were not litter-specific and became increasingly significant as decomposition progressed, with MAP explaining 2% and MAT 4% of the variation after 12 months of incubation. The effect of N deposition was litter-specific, and significant only for 12-month decomposition of Rooibos tea at the global scale. However, in the temperate biome where atmospheric N deposition rates are relatively high, the 12-month mass loss of Green and Rooibos teas decreased significantly with increasing N deposition, explaining 9.5% and 1.1% of the variance, respectively. The expected changes in macroclimate and N deposition at the global scale by the end of this century are estimated to increase the 12-month mass loss of easily decomposable litter by 1.1–3.5% and of the more stable substrates by 3.8–10.6%, relative to current mass loss. In contrast, expected changes in atmospheric N deposition will decrease the mid-term mass loss of high-quality litter by 1.4–2.2% and that of low-quality litter by 0.9–1.5% in the temperate biome. Our results suggest that projected increases in N deposition may have the capacity to dampen the climate-driven increases in litter decomposition depending on the biome and decomposition stage of substrate.
550, Nitrogen deposition -TeaComposition initiative, tea bag; Green tea; Rooibos tea; litter decomposition; carbon turnover; nitrogen deposition; TeaComposition initiative, SOIL MICROBIAL COMMUNITIES, Carbon turnover, litter decomposition, Suelo, Green Tea, Flora Microbiana, [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry, [SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry, [SDV.EE.ECO] Life Sciences [q-bio]/Ecology, environment/Ecosystems, SDG 13 - Climate Action, GE1-350, [SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study, Ecosistemas Terrestres, SDG 15 - Life on Land, [SDE.IE]Environmental Sciences/Environmental Engineering, Nutrient Cycling, Té Verde, Nitrogen deposition - TeaComposition initiative, Forestry, [SDV.EE] Life Sciences [q-bio]/Ecology, environment, climate change, Biomas, [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology, environment, Biologie, Nitrogen, [SDE.MCG]Environmental Sciences/Global Changes, green tea, 577, carbon turnover; Green tea; litter decomposition; nitrogen deposition; Rooibos tea; tea bag; TeaComposition initiative, [SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study, LEAF, TeaComposition initiative, ORGANIC-CARBON, XXXXXX - Unknown, Carbono, RATES, [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment, Escala Global, Nutrientes, forests, Ecologie, Environnement, Carbon, TEA BAG, [SDE.MCG] Environmental Sciences/Global Changes, Biology and Microbiology, Agriculture and Soil Science, Precipitación Atmosférica, Cambio Climático, [SDU.STU.HY] Sciences of the Universe [physics]/Earth Sciences/Hydrology, Tea Composition initiative, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, carbon turnover, Global Scale, GREEN TEA, RESPONSES, 105405 Geoecology, Terrestrial Ecosystems, Precipitation, 105405 Geoökologie, Nitrogen deposition, Biomes, Degradation, Soil, Tea Bag, Té Rooibos, https://purl.org/becyt/ford/1.6, FOLIAR LITTER, 401902 Soil science, SDG 15 – Leben an Land, TEMPERATURE, CARBON TURNOVER, [SDV.TOX.ECO] Life Sciences [q-bio]/Toxicology/Ecotoxicology, Nitrógeno, Temperature, Litter decomposition, Temperatura, [SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces, environment, Environnement, Ciclo de Nutrientes, nitrogen deposition, SDG 13 – Maßnahmen zum Klimaschutz, [SDE.IE] Environmental Sciences/Environmental Engineering, environment/Ecosystems, Rooibos tea, TEACOMPOSITION INITIATIVE, Climate Change, Degradación, Liter Descomposition, LITTER DECOMPOSITION, [SDV.EE.ECO]Life Sciences [q-bio]/Ecology, environment/Ecosystems, [SDV.EE]Life Sciences [q-bio]/Ecology, ROOIBOS TEA, https://purl.org/becyt/ford/1, Rooibos Tea, NITROGEN DEPOSITION, Ecologie, Microbial Flora, AVAILABILITY, Bolsa de Té, Nutrients, Descomposición de Hojas, tea bag, SD1-669.5, Green tea, 401902 Bodenkunde, N DEPOSITION, Environmental sciences, Tea bag, Earth and Environmental Sciences, [SDV.EE.ECO]Life Sciences [q-bio]/Ecology, PATTERNS, cavelab, Tea bag; Green tea; Rooibos tea; Litter decomposition; Carbon turnover; Nitrogen deposition; TeaComposition initiative, [SDE.BE]Environmental Sciences/Biodiversity and Ecology
550, Nitrogen deposition -TeaComposition initiative, tea bag; Green tea; Rooibos tea; litter decomposition; carbon turnover; nitrogen deposition; TeaComposition initiative, SOIL MICROBIAL COMMUNITIES, Carbon turnover, litter decomposition, Suelo, Green Tea, Flora Microbiana, [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry, [SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry, [SDV.EE.ECO] Life Sciences [q-bio]/Ecology, environment/Ecosystems, SDG 13 - Climate Action, GE1-350, [SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study, Ecosistemas Terrestres, SDG 15 - Life on Land, [SDE.IE]Environmental Sciences/Environmental Engineering, Nutrient Cycling, Té Verde, Nitrogen deposition - TeaComposition initiative, Forestry, [SDV.EE] Life Sciences [q-bio]/Ecology, environment, climate change, Biomas, [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology, environment, Biologie, Nitrogen, [SDE.MCG]Environmental Sciences/Global Changes, green tea, 577, carbon turnover; Green tea; litter decomposition; nitrogen deposition; Rooibos tea; tea bag; TeaComposition initiative, [SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study, LEAF, TeaComposition initiative, ORGANIC-CARBON, XXXXXX - Unknown, Carbono, RATES, [SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment, Escala Global, Nutrientes, forests, Ecologie, Environnement, Carbon, TEA BAG, [SDE.MCG] Environmental Sciences/Global Changes, Biology and Microbiology, Agriculture and Soil Science, Precipitación Atmosférica, Cambio Climático, [SDU.STU.HY] Sciences of the Universe [physics]/Earth Sciences/Hydrology, Tea Composition initiative, [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, carbon turnover, Global Scale, GREEN TEA, RESPONSES, 105405 Geoecology, Terrestrial Ecosystems, Precipitation, 105405 Geoökologie, Nitrogen deposition, Biomes, Degradation, Soil, Tea Bag, Té Rooibos, https://purl.org/becyt/ford/1.6, FOLIAR LITTER, 401902 Soil science, SDG 15 – Leben an Land, TEMPERATURE, CARBON TURNOVER, [SDV.TOX.ECO] Life Sciences [q-bio]/Toxicology/Ecotoxicology, Nitrógeno, Temperature, Litter decomposition, Temperatura, [SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces, environment, Environnement, Ciclo de Nutrientes, nitrogen deposition, SDG 13 – Maßnahmen zum Klimaschutz, [SDE.IE] Environmental Sciences/Environmental Engineering, environment/Ecosystems, Rooibos tea, TEACOMPOSITION INITIATIVE, Climate Change, Degradación, Liter Descomposition, LITTER DECOMPOSITION, [SDV.EE.ECO]Life Sciences [q-bio]/Ecology, environment/Ecosystems, [SDV.EE]Life Sciences [q-bio]/Ecology, ROOIBOS TEA, https://purl.org/becyt/ford/1, Rooibos Tea, NITROGEN DEPOSITION, Ecologie, Microbial Flora, AVAILABILITY, Bolsa de Té, Nutrients, Descomposición de Hojas, tea bag, SD1-669.5, Green tea, 401902 Bodenkunde, N DEPOSITION, Environmental sciences, Tea bag, Earth and Environmental Sciences, [SDV.EE.ECO]Life Sciences [q-bio]/Ecology, PATTERNS, cavelab, Tea bag; Green tea; Rooibos tea; Litter decomposition; Carbon turnover; Nitrogen deposition; TeaComposition initiative, [SDE.BE]Environmental Sciences/Biodiversity and Ecology
