Date (Publication)

2023-03-01

Identifier

https://catalogue.ceh.ac.uk/id/60dd0b8f-f0c3-4e30-841b-1c2067052974

Identifier

doi: / 10.5285/60dd0b8f-f0c3-4e30-841b-1c2067052974

Other citation details

Cox, A.J.F., Hartley, I.P., Meir, P., Sitch, S., Dusenge, M.E., Restrepo, Z., González-Caro, S., Villegas, J.C., Uddling, J., Mercado, L.M. (2023). A-Ci, photosynthetic capacity and dark respiration data along an elevation/temperature gradient in the Colombian Andes, 2019. NERC EDS Environmental Information Data Centre 10.5285/60dd0b8f-f0c3-4e30-841b-1c2067052974

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This resource is available under the terms of the Open Government Licence

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If you reuse this data, you should cite: Cox, A.J.F., Hartley, I.P., Meir, P., Sitch, S., Dusenge, M.E., Restrepo, Z., González-Caro, S., Villegas, J.C., Uddling, J., Mercado, L.M. (2023). A-Ci, photosynthetic capacity and dark respiration data along an elevation/temperature gradient in the Colombian Andes, 2019. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/60dd0b8f-f0c3-4e30-841b-1c2067052974

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textTable Text, table

Metadata language

EnglishEnglish

Character set

utf8 UTF8

Topic category

• Biota

Begin date

2019-01-01

End date

2019-12-31

Unique resource identifier

WGS 84

Distribution format

• Comma-separated values (CSV) ()

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Supporting information

Supporting information available to assist in re-use of this dataset

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dataset Dataset

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dataset

Statement

The raw A-Ci data was collected using a LI-6800 portable photosynthesis system. Once clamped onto a leaf, conditions inside the cuvette were standardised to 29ᵒC, 65% relative humidity and 410ppm CO2; once stable at gs ≥0.05 mol m-2 s-1, net photosynthesis was measured sequentially at 8 different ambient CO2 concentrations (Ca; 410, 300, 175, 60, 410, 800, 1500, 2000) corresponding to different intercellular Ci concentrations. Light intensity was set to a pre-determined saturating photon flux density (PPFD) for each species, according to A-Q curves collected prior to the A-Ci curves. Vcmax and Jmax values were estimated by inputting the raw A-Ci data into the 'plantecophys' package (Duursma, 2015) in the R environment (v4.2.1; R Core Team, 2022). Once these had been extracted, values were standardised to both 25°C and site growth temperature (Tg) using temperature response values derived from Kumarathunge et al. (2019) and the equation given in the supporting documentation. Rdark values were also standardised to 25°C and Tg using an exponential fixed Q10 equation (Tjoelker et al. 2001) and including the temperature-dependence of Q10; both equations are given in the supporting documentation.

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60dd0b8f-f0c3-4e30-841b-1c2067052974 XML

Metadata language

EnglishEnglish

Character set

ISO/IEC 8859-1 (also known as Latin 1) 8859 Part 1

Hierarchy level

dataset Dataset

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dataset

Date stamp

2025-11-05T08:31:31

Metadata standard name

UK GEMINI

Metadata standard version

2.3