%0 Journal Article %1 citeulike:2928809 %A Wright, I. J. %A Reich, P. B. %A Westoby, M. %D 2001 %I Blackwell Science Ltd %J Functional Ecology %K citeulikeExport leaf, postdoc, resource\_use %N 4 %P 423--434 %R 10.1046/j.0269-8463.2001.00542.x %T Strategy shifts in leaf physiology, structure and nutrient content between species of high- and low-rainfall and high- and low-nutrient habitats %U http://dx.doi.org/10.1046/j.0269-8463.2001.00542.x %V 15 %X Summary * 1 Relationships were examined among photosynthetic capacity (Amass and Aarea), foliar dark respiration rate (Rd-mass and Rd-area), stomatal conductance to water (Gs), specific leaf area (SLA), and leaf nitrogen (N) and phosphorus (P) across 79 perennial species occurring at four sites with contrasting rainfall levels and soil nutrients in eastern Australia. We hypothesized that the slope of log–log 'scaling' relationships between these traits would be positive and would not differ between sites, although slope elevations might shift between habitat types. * 2 Amass, Rd-mass, SLA, Nmass and Pmass were positively associated in common slopes fitted across sites or rainfall zones, although rather weakly within individual sites in some cases. The relationships between Amass (and Rd-mass) with each of Nmass and SLA were partially independent of each other, with Amass (or Rd-mass) increasing with SLA at a given Nmass, or with Nmass at a given SLA (only weakly in the case of Amass). These results improve the quantification and extend the generalization of reported patterns to floras largely unlike those studied previously, with the additional contribution of including phosphorus data. * 3 Species from drier sites differed in several important respects. They had (i) higher leaf N and P (per dry mass or area); (ii) lower photosynthetic capacity at a given leaf N or P; (iii) higher Rd-mass at a given SLA or Amass; and (iv) lower Gs at a given Aarea (implying lower internal CO2 concentration). * 4 These trends can be interpreted as part of a previously undocumented water conservation strategy in species from dry habitats. By investing heavily in photosynthetic enzymes, a larger drawdown of internal CO2 concentration is achieved, and a given photosynthetic rate is possible at a lower stomatal conductance. Transpirational water use is similar, however, due to the lower-humidity air in dry sites. The benefit of the strategy is that dry-site species reduce water loss at a given Aarea, down to levels similar to wet-site species, despite occurring in lower-humidity environments. The cost of high leaf N is reflected in higher dark respiration rates and, presumably, additional costs incurred by N acquisition and increased herbivory risk.

@article{citeulike:2928809, abstract = {{Summary * 1 Relationships were examined among photosynthetic capacity (Amass and Aarea), foliar dark respiration rate (Rd-mass and Rd-area), stomatal conductance to water (Gs), specific leaf area (SLA), and leaf nitrogen (N) and phosphorus (P) across 79 perennial species occurring at four sites with contrasting rainfall levels and soil nutrients in eastern Australia. We hypothesized that the slope of log–log 'scaling' relationships between these traits would be positive and would not differ between sites, although slope elevations might shift between habitat types. * 2 Amass, Rd-mass, SLA, Nmass and Pmass were positively associated in common slopes fitted across sites or rainfall zones, although rather weakly within individual sites in some cases. The relationships between Amass (and Rd-mass) with each of Nmass and SLA were partially independent of each other, with Amass (or Rd-mass) increasing with SLA at a given Nmass, or with Nmass at a given SLA (only weakly in the case of Amass). These results improve the quantification and extend the generalization of reported patterns to floras largely unlike those studied previously, with the additional contribution of including phosphorus data. * 3 Species from drier sites differed in several important respects. They had (i) higher leaf N and P (per dry mass or area); (ii) lower photosynthetic capacity at a given leaf N or P; (iii) higher Rd-mass at a given SLA or Amass; and (iv) lower Gs at a given Aarea (implying lower internal CO2 concentration). * 4 These trends can be interpreted as part of a previously undocumented water conservation strategy in species from dry habitats. By investing heavily in photosynthetic enzymes, a larger drawdown of internal CO2 concentration is achieved, and a given photosynthetic rate is possible at a lower stomatal conductance. Transpirational water use is similar, however, due to the lower-humidity air in dry sites. The benefit of the strategy is that dry-site species reduce water loss at a given Aarea, down to levels similar to wet-site species, despite occurring in lower-humidity environments. The cost of high leaf N is reflected in higher dark respiration rates and, presumably, additional costs incurred by N acquisition and increased herbivory risk.}}, added-at = {2019-03-31T01:14:40.000+0100}, author = {Wright, I. J. and Reich, P. B. and Westoby, M.}, biburl = {https://www.bibsonomy.org/bibtex/2a511a92cf0242df0ca8baf36e3ad44e4/dianella}, citeulike-article-id = {2928809}, citeulike-linkout-0 = {http://www.blackwell-synergy.com/doi/abs/10.1046/j.0269-8463.2001.00542.x}, citeulike-linkout-1 = {http://dx.doi.org/10.1046/j.0269-8463.2001.00542.x}, comment = {(private-note)Kuringai Chase + Box Hill, which is just north of Cocoparra. They will probably have very similar species to us. Sydney: Acacia floribunda Allocasuarina sp Astrotricha floccosa Correa reflexa Dodonaea triquetra Eucalyptus paniculata Eucalyptus umbra Gompholobium latifolium Lasiopetalum ferrugineum Leptospermum polygalifolium Lomatia silaifolia Macrozamia communis Persoonia linearis Pomaderris ferruginea Pultenea daphnoides Pultenea flexilis Synoum glandulosum Syncarpia glomulifera Xylomelum pyriforme Acacia suaveolens Banksia marginata Boronia ledifolia Corymbia gummifera Eriostemon australasius Eucalyptus haemostoma Gompholobium grandiflorum Grevillea buxifolia Grevillea speciosa Hakea dactyloides Hakea teretifolia Hibbertia bracteata Lambertia formosa Leptospermum trinervium Persoonia levis Phyllota phylicoides Pimelea linifolia Western: Acacia doratoxylon Acacia oswaldii Atriplex stipitata Brachychiton populneus Callitris glaucophylla Dodonaea viscosa angustissima Dodonaea viscosa cuneata Dodonaea viscosa spatulata Eremophila glabra Eremophila longifolia Eremophila mitchelli Eucalyptus intertexta Exocarpus apophyllum Geijera parviflora Hakea tephrosperma Helichrysum apiculatum Melaleuca uncinata Olearia pimelioides Philotheca difformis Pimelea microcephala Senna artemisioides 1lft Senna artemisioides 3lft Solanum ferocissium Spartothamnella puberula Acacia colletioides Acacia havilandiorum Acacia willhelmiana Bertya cunninghamii Beyeria opaca Bossiaea walkeri Brachychiton populneus Callitris glaucophylla Cassinia laevis Eremophila deserti Eremophila glabra Eucalyptus dumosa Eucalyptus socialis Eutaxia microphylla Grevillea aneura Melaleuca uncinata Micromyrtus sessilis Olearia decurrens Olearia pimelioides Philotheca difformis Santalum acuminatum Triodia scabra}, doi = {10.1046/j.0269-8463.2001.00542.x}, interhash = {45ebf71e46c74d1386d686d2f37c07db}, intrahash = {a511a92cf0242df0ca8baf36e3ad44e4}, journal = {Functional Ecology}, keywords = {citeulikeExport leaf, postdoc, resource\_use}, number = 4, pages = {423--434}, posted-at = {2008-06-26 08:46:48}, priority = {2}, publisher = {Blackwell Science Ltd}, timestamp = {2019-03-31T01:16:26.000+0100}, title = {{Strategy shifts in leaf physiology, structure and nutrient content between species of high- and low-rainfall and high- and low-nutrient habitats}}, url = {http://dx.doi.org/10.1046/j.0269-8463.2001.00542.x}, volume = 15, year = 2001 }