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Imaging spectroscopy reveals the effects of topography and logging on the leaf chemistry of tropical forest canopy trees
- Source :
- Swinfield, T, Both, S, Riutta, T, Bongalov, B, Elias, D, Majalap-lee, N, Ostle, N, Svátek, M, Kvasnica, J, Milodowski, D, Jucker, T, Ewers, R M, Zhang, Y, Johnson, D, Teh, Y A, Burslem, D F R P, Malhi, Y & Coomes, D 2019, ' Imaging spectroscopy reveals the effects of topography and logging on the leaf chemistry of tropical forest canopy trees ', Global Change Biology . https://doi.org/10.1111/gcb.14903, Global Change Biology, Swinfield, T, Both, S, Riutta, T, Bongalov, B, Elias, D, Majalap-Lee, N, Ostle, N, Svátek, M, Kvasnica, J, Milodowski, D, Jucker, T, Ewers, R M, Zhang, Y, Johnson, D, Teh, Y A, Burslem, D F R P, Malhi, Y & Coomes, D 2019, ' Imaging spectroscopy reveals the effects of topography and logging on the leaf chemistry of tropical forest canopy trees ', Global Change Biology, vol. 26, no. 2, pp. 989-1002 . https://doi.org/10.1111/gcb.14903, Swinfield, T, Both, S, Riutta, T, Bongalov, B, Elias, D, Majalap-Lee, N, Ostle, N, Svátek, M, Kvasnica, J, Milodowski, D, Jucker, T, Ewers, R M, Zhang, Y, Johnson, D, Teh, Y A, Burslem, D F R P, Malhi, Y & Coomes, D 2020, ' Imaging spectroscopy reveals the effects of topography and logging on the leaf chemistry of tropical forest canopy trees ', Global Change Biology, vol. 26, no. 2, pp. 989-1002 . https://doi.org/10.1111/gcb.14903
- Publication Year :
- 2019
- Publisher :
- Wiley, 2019.
-
Abstract
- Logging, pervasive across the lowland tropics, affects millions of hectares of forest, yet its influence on nutrient cycling remains poorly understood. One hypothesis is that logging influences phosphorus (P) cycling, because this scarce nutrient is removed in extracted timber and eroded soil, leading to shifts in ecosystem functioning and community composition. However, testing this is challenging because P varies within landscapes as a function of geology, topography and climate. Superimposed upon these trends are compositional changes in logged forests, with species with more acquisitive traits, characterized by higher foliar P concentrations, more dominant. It is difficult to resolve these patterns using traditional field approaches alone. Here, we use airborne light detection and ranging‐guided hyperspectral imagery to map foliar nutrient (i.e. P, nitrogen [N]) concentrations, calibrated using field measured traits, over 400 km2 of northeastern Borneo, including a landscape‐level disturbance gradient spanning old‐growth to repeatedly logged forests. The maps reveal that canopy foliar P and N concentrations decrease with elevation. These relationships were not identified using traditional field measurements of leaf and soil nutrients. After controlling for topography, canopy foliar nutrient concentrations were lower in logged forest than in old‐growth areas, reflecting decreased nutrient availability. However, foliar nutrient concentrations and specific leaf area were greatest in relatively short patches in logged areas, reflecting a shift in composition to pioneer species with acquisitive traits. N:P ratio increased in logged forest, suggesting reduced soil P availability through disturbance. Through the first landscape scale assessment of how functional leaf traits change in response to logging, we find that differences from old‐growth forest become more pronounced as logged forests increase in stature over time, suggesting exacerbated phosphorus limitation as forests recover.<br />Soil nutrients that come from rocks are critical for tree growth but rare in tropical forests. Logging removes these nutrients in quantities that could change plant life there. We mapped leaf nutrients in pristine and logged forests in Malaysia using cutting edge remote sensing combined with field measurements and found fewer nutrients in logged forests after controlling for other variables. Nutrients were most scarce in logged forests that had recovered with time after logging, raising concerns that they are changed permanently in terms of the species that live there and the nutrients available to them.
- Subjects :
- 0106 biological sciences
Canopy
leaf traits
010504 meteorology & atmospheric sciences
Biodiversity & Conservation
05 Environmental Sciences
DIVERSITY
Forests
01 natural sciences
logging
Trees
Nutrient
Environmental Science(all)
Borneo
Primary Research Article
phosphorus
General Environmental Science
Global and Planetary Change
Ecology
Chemistry
Logging
food and beverages
RAIN-FOREST
CHEMICAL TRAITS
PHOSPHORUS LIMITATION
Biodiversity Conservation
Life Sciences & Biomedicine
Geology
tropical forest
Nutrient cycle
SQUARES REGRESSION
Specific leaf area
Environmental Sciences & Ecology
imaging spectroscopy
010603 evolutionary biology
Ecology and Environment
topography
NUTRIENT LIMITATION
Environmental Chemistry
Ecosystem
MOUNT KINABALU
0105 earth and related environmental sciences
Tropical Climate
Pioneer species
Science & Technology
Spectrum Analysis
Tropics
SPECIES DISTRIBUTIONS
15. Life on land
06 Biological Sciences
Primary Research Articles
NITROGEN
Agronomy
nutrient availability
Environmental Sciences
specific leaf area
RESPONSES
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Swinfield, T, Both, S, Riutta, T, Bongalov, B, Elias, D, Majalap-lee, N, Ostle, N, Svátek, M, Kvasnica, J, Milodowski, D, Jucker, T, Ewers, R M, Zhang, Y, Johnson, D, Teh, Y A, Burslem, D F R P, Malhi, Y & Coomes, D 2019, ' Imaging spectroscopy reveals the effects of topography and logging on the leaf chemistry of tropical forest canopy trees ', Global Change Biology . https://doi.org/10.1111/gcb.14903, Global Change Biology, Swinfield, T, Both, S, Riutta, T, Bongalov, B, Elias, D, Majalap-Lee, N, Ostle, N, Svátek, M, Kvasnica, J, Milodowski, D, Jucker, T, Ewers, R M, Zhang, Y, Johnson, D, Teh, Y A, Burslem, D F R P, Malhi, Y & Coomes, D 2019, ' Imaging spectroscopy reveals the effects of topography and logging on the leaf chemistry of tropical forest canopy trees ', Global Change Biology, vol. 26, no. 2, pp. 989-1002 . https://doi.org/10.1111/gcb.14903, Swinfield, T, Both, S, Riutta, T, Bongalov, B, Elias, D, Majalap-Lee, N, Ostle, N, Svátek, M, Kvasnica, J, Milodowski, D, Jucker, T, Ewers, R M, Zhang, Y, Johnson, D, Teh, Y A, Burslem, D F R P, Malhi, Y & Coomes, D 2020, ' Imaging spectroscopy reveals the effects of topography and logging on the leaf chemistry of tropical forest canopy trees ', Global Change Biology, vol. 26, no. 2, pp. 989-1002 . https://doi.org/10.1111/gcb.14903
- Accession number :
- edsair.doi.dedup.....82b993ec11d5b6ac8261bcce72fd2778