%ARiutta, Terhi [School of Geography and the Environment Environmental Change Institute University of Oxford Oxford UK]%ARiutta, Terhi [School of Geography and the Environment, Environmental Change Institute, University of Oxford, Oxford UK]%AMalhi, Yadvinder [School of Geography and the Environment Environmental Change Institute University of Oxford Oxford UK]%AMalhi, Yadvinder [School of Geography and the Environment, Environmental Change Institute, University of Oxford, Oxford UK]%AKho, Lip [School of Geography and the Environment Environmental Change Institute University of Oxford Oxford UK, Biological Research Division Tropical Peat Research Institute Malaysian Palm Oil Board Kajang Selangor Malaysia]%AKho, Lip [School of Geography and the Environment, Environmental Change Institute, University of Oxford, Oxford UK, Biological Research Division, Tropical Peat Research Institute, Malaysian Palm Oil Board, Kajang Selangor Malaysia]%AMarthews, Toby [School of Geography and the Environment Environmental Change Institute University of Oxford Oxford UK, Centre for Ecology &, Hydrology Wallingford UK]%AMarthews, Toby [School of Geography and the Environment, Environmental Change Institute, University of Oxford, Oxford UK, Centre for Ecology & Hydrology, Wallingford UK]%AHuaraca Huasco, Walter [Universidad Nacional de San Antonio Abad del Cusco, Cusco Peru]%AHuaraca Huasco, Walter [Universidad Nacional de San Antonio Abad del Cusco Cusco Peru]%AKhoo, MinSheng [Department of Life Sciences, Imperial College London, Ascot UK]%AKhoo, MinSheng [Department of Life Sciences Imperial College London Ascot UK]%ATan, Sylvester [Center for Tropical Forest Science Smithsonian Institution Washington DC USA]%ATan, Sylvester [Center for Tropical Forest Science, Smithsonian Institution, Washington DC USA]%ATurner, Edgar [Insect Ecology Group University Museum of Zoology, University of Cambridge Cambridge UK]%ATurner, Edgar [Insect Ecology Group, University Museum of Zoology, University of Cambridge, Cambridge UK]%AReynolds, Glen [Danum Valley Field Centre The Royal Society South East Asia Rainforest Research Partnership Lahad Datu Sabah Malaysia]%AReynolds, Glen [Danum Valley Field Centre, The Royal Society South East Asia Rainforest Research Partnership, Lahad Datu Sabah Malaysia]%ABoth, Sabine [School of Biological Sciences, University of Aberdeen, Aberdeen UK]%ABoth, Sabine [School of Biological Sciences University of Aberdeen Aberdeen UK]%ABurslem, David [School of Biological Sciences University of Aberdeen Aberdeen UK]%ABurslem, David [School of Biological Sciences, University of Aberdeen, Aberdeen UK]%ATeh, Yit [School of Biological Sciences, University of Aberdeen, Aberdeen UK]%ATeh, Yit [School of Biological Sciences University of Aberdeen Aberdeen UK]%AVairappan, Charles [Institute for Tropical Biology and Conservation, Universiti Malaysia Sabah, Kota Kinabalu Malaysia]%AVairappan, Charles [Institute for Tropical Biology and Conservation Universiti Malaysia Sabah Kota Kinabalu Malaysia]%AMajalap, Noreen [Sabah Forestry Department Forest Research Centre Sandakan Sabah Malaysia]%AMajalap, Noreen [Sabah Forestry Department, Forest Research Centre, Sandakan Sabah Malaysia]%AEwers, Robert [Department of Life Sciences, Imperial College London, Ascot UK]%AEwers, Robert [Department of Life Sciences Imperial College London Ascot UK]%BJournal Name: Global Change Biology; Journal Volume: 24; Journal Issue: 7; Related Information: CHORUS Timestamp: 2023-09-16 19:10:35 %D2018%IWiley-Blackwell %JJournal Name: Global Change Biology; Journal Volume: 24; Journal Issue: 7; Related Information: CHORUS Timestamp: 2023-09-16 19:10:35 %K %MOSTI ID: 10053451 %PMedium: X %TLogging disturbance shifts net primary productivity and its allocation in Bornean tropical forests %XAbstract

Tropical forests play a major role in the carbon cycle of the terrestrial biosphere. Recent field studies have provided detailed descriptions of the carbon cycle of mature tropical forests, but logged or secondary forests have received much less attention. Here, we report the first measures of total net primary productivity (NPP) and its allocation along a disturbance gradient from old‐growth forests to moderately and heavily logged forests in Malaysian Borneo. We measured the mainNPPcomponents (woody, fine root and canopyNPP) in old‐growth (n = 6) and logged (n = 5) 1 ha forest plots. Overall, the totalNPPdid not differ between old‐growth and logged forest (13.5 ± 0.5 and 15.7 ± 1.5 Mg C ha−1 year−1respectively). However, logged forests allocated significantly higher fraction into woodyNPPat the expense of the canopyNPP(42% and 48% into woody and canopyNPP, respectively, in old‐growth forest vs 66% and 23% in logged forest). When controlling for local stand structure,NPPin logged forest stands was 41% higher, and woodyNPPwas 150% higher than in old‐growth stands with similar basal area, but this was offset by structure effects (higher gap frequency and absence of large trees in logged forest). This pattern was not driven by species turnover: the average woodyNPPof all species groups within logged forest (pioneers, nonpioneers, species unique to logged plots and species shared with old‐growth plots) was similar. Hence, below a threshold of very heavy disturbance, logged forests can exhibit higherNPPand higher allocation to wood; such shifts in carbon cycling persist for decades after the logging event. Given that the majority of tropical forest biome has experienced some degree of logging, our results demonstrate that logging can cause substantial shifts in carbon production and allocation in tropical forests.

%0Journal Article