2022
DOI: 10.1038/s41598-022-06674-x
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Eucalyptus obliqua tall forest in cool, temperate Tasmania becomes a carbon source during a protracted warm spell in November 2017

Abstract: Tasmania experienced a protracted warm spell in November 2017. Temperatures were lower than those usually characterising heatwaves. Nonetheless the warm spell represented an extreme anomaly based on the historical local climate. Eddy covariance measurements of fluxes in a Eucalyptus obliqua tall forest at Warra, southern Tasmania during the warm spell were compared with measurements in the same period of the previous year when temperatures were closer to average. Compared with previous year, the warm spell res… Show more

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Cited by 4 publications
(4 citation statements)
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“…Modeled above‐ and belowground C stocks fell within the range of observed values at each site, except for being slightly higher than the observed range of variability at the western site. Modeled NPP also fell within the reported range of values (500–700 g C m −2 year −1 ) for wet eucalypt stands in Tasmania (Wardlaw, 2022).…”
Section: Methodssupporting
confidence: 76%
See 1 more Smart Citation
“…Modeled above‐ and belowground C stocks fell within the range of observed values at each site, except for being slightly higher than the observed range of variability at the western site. Modeled NPP also fell within the reported range of values (500–700 g C m −2 year −1 ) for wet eucalypt stands in Tasmania (Wardlaw, 2022).…”
Section: Methodssupporting
confidence: 76%
“…Given their ecological and economic importance, there is strong motivation to understand the impacts of environmental change on eucalypt forests (Turnbull, 2000). The impacts of abiotic factors such as drought (Matusick et al., 2016), warming (Bowman et al., 2014; Wardlaw, 2022), and wildfire (Matthews et al., 2012; McColl‐Gausden et al., 2022) on eucalypt forest biogeochemical cycling have received notable attention, but the role of biotic factors (i.e., animal contributions) on ecosystem C dynamics are less understood ( but see Bartel et al., 2023; Benbow et al., 2015; Schmitz et al., 2018). Through ingestion and excretion, animals redistribute C and nutrients across the landscape, creating ephemeral patches of high‐quality resources that can be used for biomass production by plants and soil microbes (Bazely & Jefferies, 1985; Day & Detling, 1990; Frank et al., 1994).…”
Section: Introductionmentioning
confidence: 99%
“…The tall eucalypt forests of southern Tasmania behave differently. During a record heatwave event in 2017 the GPP of E. obliqua tall forest at Warra in southern Tasmania declined sharply, but that decline in GPP was not associated with stomatal regulation to limit water loss (Wardlaw 2022).…”
Section: Association Between Changes In Gpp and Regulation Of Water Lossmentioning
confidence: 97%
“…Heatwaves are particularly impactful. During a record heatwave event in November 2017, the E. obliqua tall forest at the Warra SuperSite within the TWWHA switched from being a net carbon sink to become a net carbon source (Wardlaw 2022). The switch from a carbon sink to a source was due to significant reductions in gross primary productivity (GPP) of the forest when compared with periods of closer-to-normal temperatures.…”
Section: Introductionmentioning
confidence: 99%