SuperSites Data Portal
Leaf Level Physiology, Chemistry and Structural Traits, Far North Queensland Rainforest SuperSite, Daintree Rainforest Observatory, Cape Tribulation, 2012
- Citation
-
Atkin, O (): Leaf Level Physiology, Chemistry and Structural Traits, Far North Queensland Rainforest SuperSite, Daintree Rainforest Observatory, Cape Tribulation, 2012. TERN Australian SuperSite Network. http://supersites.tern.org.au/knb/metacat/lloyd.258.26/html
- Identifier
-
- docid
- lloyd.258.26
- Data Creators
-
- Individual
- Professor Owen Atkin
- Organization
- The Australian National University
- Abstract
-
Objectives: (1). Quantify rates of leaf respiration (both in darkness and in the light) and associated leaf traits in a wide range of tropical tree species (2) Establish the extent to which rates of leaf respiration and associated traits change in response to changes in light availability within the canopy. (3). Quantify the temperature dependence of leaf respiration of tropical tree species, using leaves sampled from the top and lower positions of the canopy. Experimental design and methods: In September 2010, we surveyed rates of light-saturated photosynthesis (measured at ambient and elevated atmospheric CO2 concentrations), leaf respiratory CO2 release (both in darkness and in the light) and related leaf traits (area:mass ratios, and concentrations of nitrogen, phosphorus and soluble/insoluble carbohydrates) in 16 tropical species growing at the Cape Tribulation Canopy Crane site. Leaves were sampled at two positions in the canopy (sun-exposed/top-canopy and shade-leaves/lower canopy). Light response curves of leaf CO2 exchange were used to calculate rates of leaf respiration in the light (using the ‘Kok’ method). We will also quantified short-term temperature dependences of leaf respiration in the upper and lower canopy leaves.
- Contacts for Questions on the Use and Interpretation of Data
-
- Individual
- Professor Owen Atkin
- Organization
- The Australian National University
- Address
-
Division of Plant Sciences
Research School of Biology, Building 46, ANU, Acton
Canberra. ACT 0200
Australia
- Phone
-
- voice
- 02 6125 5046
- Email Address
- Owen.Atkin@anu.edu.au
- Project Information and Data Owners
-
- Title
- Understanding the contribution of leaf respiration to the leaf carbon balance of tropical trees
- Personnel
-
- Role
- Principal Investigator
- Individual
- Professor Owen Atkin
- Organization
- The Australian National University
- Funding
-
JCU (student grant to Lasantha Weerasinghe to use Canopy Crane); ARC DP09 grant (DP0986823) Out of the darkness: predicting rates of respiration of illuminated leaves along nutrient gradients
- Methods and Sampling Information
-
- Methods
-
Method Step 1
- Description
-
Quantify rates of leaf respiration (both in darkness and in the light) and associated leaf traits in a wide range of tropical tree species; Establish the extent to which rates of leaf respiration and associated traits change in response to changes in light availability within the canopy.
Our primary measured response variables were leaf respiration measured in darkness (Rdark) and in the light (Rlight – made using the Kok method), estimated by CO2 release (using Licor 6400 gas exchange systems). To address Objective 3, we used the Licor 6400 to measure temperature responses of Rdark. In most cases, measurements were made on detached branches (sampled in the morning, with the xylem immediately re-cut under water). For leaves sampled at top and lower regions of the canopy, this required 2 hours canopy crane access per day [one hour in the morning (8-9 AM) and one in the afternoon (1-2 PM)]. Detached branches were transported to the laboratory where gas exchange rates would be measured. Immediately after measurements, leaf fresh mass and area were determined – thereafter, leaves were oven dried/weighed and then shipped to Canberra for chemical analysis. In addition to the above work on detached branches, we used an additional 2 hours of canopy crane access during the middle of the day (11 AM – 1 PM) to allow in situ measurements of light-saturated photosynthesis (both at ambient and elevated atmospheric CO2 concentration) and leaf respiration in darkness (after 30 mins of darkening to avoid post-illumination transients in respiratory CO2 release).
Measurements were made on species for which were sufficient replicates and for which removal of short branches containing several fully expanded leaves would not have an adverse effect on the growth/health of individual trees. Measurements were measured on 4 trees from each study species, using leaves sampled from two positions in the canopy (top and lower).
For two dominant species, we also determined whether rates of leaf respiration vary diurnally, via sampling branches at different time points in the day (e.g. 6 AM, NOON and 6 PM). The impact of cutting on leaf respiration and photosynthesis was accessed via first measuring rates of leaf R and photosynthesis on attached leaves, then cutting the branches and doing repeated measures of leaf respiration following cutting.
To address Objectives 1 and 2, leaf net CO2 exchange was measured at a set CO2 partial pressure and at several irradiance levels. Net CO2 exchange was first measured at saturating and growth irradiance, and then at several lower light levels (e.g. from 100 to 0?mol photons m-2 s-1); these measurements provided data on net assimilation (A) under ambient irradiance (Aamb) and light-saturation (Asat), as well as Rlight (calculated using the Kok method) and Rdark. Collectively, the data collected enabled us to calculate the % of A that is respired when assuming that R is, and is not, inhibited by light. Whilst cutting does not affect leaf respiration, we have found at other sites that sometimes (<20% of cases) stomatal conductance declines (affecting Asat) – thus, for upper canopy leaves, additional measurements of maximal photosynthesis (Amax, measured at elevated CO2 and under light-saturation) were made to allow assessment of the balance between respiratory and photosynthetic capacity.
- Instrument
-
- 4 x Licor 6400 Portable gas exchange systems and associated spares and consumables
- High precision balance for measuring leaf masses
- Portable oven to dry leaf material
Method Step 2- Description
-
Quantify the temperature dependence of leaf respiration of tropical tree species, using leaves sampled from the top and lower positions of the canopy.
We quantify the instantaneous temperature response of leaf respiration over a wide temperature range (using a programmable temperature controlled water bath to increase temperatures in a custom-made cuvette by 1 °C per min). Data were collected every 10 seconds over the 20-70 °C temperature range, enabling high precision temperature response curves to be generated. This will enable us to determine the extent to which the Q10 (i.e. proportional increase in respiration per 10 °C rise in temperature) of leaf respiration declined with increasing temperature.
- Associated Parties
-
- Role
- Content Provider
- Individual
- Lasantha Weerasinghe
- Organization
- The Australian National University
- Role
- Content Provider
- Individual
- Danielle Creek
- Organization
- The Australian National University
- Role
- Content Provider
- Individual
- Kristine Crous
- Organization
- The Australian National University
- Role
- Content Provider
- Individual
- Shuang Xiang
- Organization
- The Australian National University
- Keywords and Subject Categories
-
-
- photosynthesis
- leaf respiration
- leaf nitrogen
- leaf phosphorus
- carbohydrates
- sugar
- starch
- temperature
- light
- shade
- irradiance
- FNQ Rainforest
- Far North Queensland
- anzsrc-for
-
- 0607
-
- Geographic Coverage
-
- Geographic Description
- Cape Tribulation Canopy Crane Research Facility
- Bounding Coordinates
-
- West
- 145.29 degrees
- East
- 145.29 degrees
- North
- -16.17 degrees
- South
- -16.17 degrees
- Temporal Coverage
-
- Date Begin
- 2010-09-02
- Date End
- 2010-09-24
- Intellectual Rights, Licence and Usage Conditions
-
CC-BY-4_0
- Data Table
-
- Name
- asn_fnqr_daintree_veg_leaf_phys_20120831.csv
- Attribute Information
-
synthe no
- Name
- synthe no
- Definition
- synthe number
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- synthe number
Family- Name
- Family
- Definition
- Family name
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- text
Date- Name
- Date
- Definition
- Date measurements were made
- Measurement Type
- dateTime
- Measurement Domain
-
- Format
- dd-mmm
Species- Name
- Species
- Definition
- species name
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- species
replicate- Name
- replicate
- Definition
- replicate number
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- replicate number
Forest location- Name
- Forest location
- Definition
- Location of tree sampled, showing first degrees (out of 360°) in a circle at the canopy crane, followed by the distance along the crane jib.
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- location
Canopy location- Name
- Canopy location
- Definition
- Canopy level
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- text
Asat- Name
- Asat
- Definition
- Light saturated photosynthesis, measured at 1800 umol photons m-2 s-1 and at ambient atmospheric CO2 concentration (400 ppm); rates reported either on a leaf area (umol CO2 m-2 s-1), dry mass (nmol gDM-1 s-1), leaf nitrogen (umol gN-1 s-1) and leaf phosphorous (umol gN-1 s-1) basis. Measured at the prevailing leaf temperature
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Cond- Name
- Cond
- Definition
- Stomatal conductance (mmol m-2 s-1) at the associated Asat or Amax or Rdark condition
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- millimolesPerMetreSquaredPerSecond
- Number Type
- natural
Ci- Name
- Ci
- Definition
- Internal CO2 concentration (ppm)
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- dimensionless
- Number Type
- natural
Leaf temp- Name
- Leaf temp
- Definition
- Leaf temperature, as measured by the Licor 6400 thermocouple, at the associated Asat or Amax or Rdark condition
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- celsius
- Number Type
- natural
VPD- Name
- VPD
- Definition
- Vapour pressure deficit
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- kilopascal
- Number Type
- natural
CO2(S)- Name
- CO2(S)
- Definition
- Ambient CO2 concentration
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- dimensionless
- Number Type
- natural
Amax- Name
- Amax
- Definition
- Light saturated photosynthesis, measured at 1800 umol photons m-2 s-1 and at saturating atmospheric CO2 concentration (1500 ppm); rates reported either on a leaf area (umol CO2 m-2 s-1), dry mass (nmol gDM-1 s-1), leaf nitrogen (umol gN-1 s-1) and leaf phosphorous (umol gN-1 s-1) basis. Measured at the prevailing leaf temperature
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Cond- Name
- Cond
- Definition
- Stomatal conductance (mmol m-2 s-1) at the associated Asat or Amax or Rdark condition
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- millimolesPerMetreSquaredPerSecond
- Number Type
- natural
Ci- Name
- Ci
- Definition
- Internal CO2 concentration (ppm)
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- dimensionless
- Number Type
- natural
Leaf temp- Name
- Leaf temp
- Definition
- Leaf temperature, as measured by the Licor 6400 thermocouple, at the associated Asat or Amax or Rdark condition
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- celsius
- Number Type
- natural
Rdark- Name
- Rdark
- Definition
- Leaf respiration in darkness, measured after 30 minutes in darkness, measured at ambient atmospheric CO2 concentration (400 ppm); rates reported either on a leaf area (umol CO2 m-2 s-1), dry mass (nmol gDM-1 s-1), leaf nitrogen (umol gN-1 s-1) and leaf phosphorous (umol gN-1 s-1) basis. Measured at the prevailing leaf temperature
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Cond- Name
- Cond
- Definition
- Stomatal conductance (mmol m-2 s-1) at the associated Asat or Amax or Rdark condition
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- millimolesPerMetreSquaredPerSecond
- Number Type
- natural
Leaf temp- Name
- Leaf temp
- Definition
- Leaf temperature, as measured by the Licor 6400 thermocouple, at the associated Asat or Amax or Rdark condition
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- fahrenheit
- Number Type
- natural
R28- Name
- R28
- Definition
- Leaf respiration in darkness, but temperature adjusted to 28oC assuming a Q10 of 2.0 for leaf respiration
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
R25- Name
- R25
- Definition
- Leaf respiration in darkness, but temperature adjusted to 25oC assuming a Q10 of 2.0 for leaf respiration
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Mean Leaf T- Name
- Mean Leaf T
- Definition
- Leaf T at which R in darkness was measured
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- celsius
- Number Type
- natural
R/Asat- Name
- R/Asat
- Definition
- Ratio of leaf respiration in darkness to Asat
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- dimensionless
- Number Type
- natural
R/Amax- Name
- R/Amax
- Definition
- Ratio of leaf respiration in darkness to Amax
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- dimensionless
- Number Type
- natural
Assumed Q10- Name
- Assumed Q10
- Definition
- Assumed Q10
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
2- Name
- 2
- Definition
- 2
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
R28- Name
- R28
- Definition
- Leaf respiration in darkness, but temperature adjusted to 28oC assuming a Q10 of 2.0 for leaf respiration
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
R25- Name
- R25
- Definition
- Leaf respiration in darkness, but temperature adjusted to 25oC assuming a Q10 of 2.0 for leaf respiration
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Mean Leaf T- Name
- Mean Leaf T
- Definition
- Leaf T at which R in darkness was measured
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- celsius
- Number Type
- natural
R/Asat- Name
- R/Asat
- Definition
- Ratio of leaf respiration in darkness to Asat
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- dimensionless
- Number Type
- natural
R/Amax- Name
- R/Amax
- Definition
- Ratio of leaf respiration in darkness to Amax
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- dimensionless
- Number Type
- natural
?- Name
- ?
- Definition
- ?
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
Asatmass(nmol.g-1.s-1)- Name
- Asatmass(nmol.g-1.s-1)
- Definition
- Light saturated photosynthesis, measured at 1800 umol photons m-2 s-1 and at ambient atmospheric CO2 concentration (400 ppm); rates reported either on a leaf area (umol CO2 m-2 s-1), dry mass (nmol gDM-1 s-1), leaf nitrogen (umol gN-1 s-1) and leaf phosphorous (umol gN-1 s-1) basis. Measured at the prevailing leaf temperature
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- nanomolesPerGramPerSecond
- Number Type
- natural
Amaxmass(nmol.g-1.s-1)- Name
- Amaxmass(nmol.g-1.s-1)
- Definition
- Light saturated photosynthesis, measured at 1800 umol photons m-2 s-1 and at saturating atmospheric CO2 concentration (1500 ppm); rates reported either on a leaf area (umol CO2 m-2 s-1), dry mass (nmol gDM-1 s-1), leaf nitrogen (umol gN-1 s-1) and leaf phosphorous (umol gN-1 s-1) basis. Measured at the prevailing leaf temperature
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- nanomolesPerGramsPerSecond
- Number Type
- natural
Rdmass(nmol.g-1.s-1)- Name
- Rdmass(nmol.g-1.s-1)
- Definition
- Leaf respiration in darkness, measured after 30 minutes in darkness, measured at ambient atmospheric CO2 concentration (400 ppm); rates reported either on a leaf area (umol CO2 m-2 s-1), dry mass (nmol gDM-1 s-1), leaf nitrogen (umol gN-1 s-1) and leaf phosphorous (umol gN-1 s-1) basis. Measured at the prevailing leaf temperature
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- nanomolesPerGramsPerSecond
- Number Type
- natural
Rdark28- Name
- Rdark28
- Definition
- Leaf respiration in darkness, but temperature adjusted to 28oC assuming a Q10 of 2.0 for leaf respiration
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- nanomolesPerGramsPerSecond
- Number Type
- natural
Rdark25- Name
- Rdark25
- Definition
- Leaf respiration in darkness, but temperature adjusted to 25oC assuming a Q10 of 2.0 for leaf respiration
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- nanomolesPerGramsPerSecond
- Number Type
- natural
?- Name
- ?
- Definition
- ?
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
blank- Name
- blank
- Definition
- blank
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
Asat- Name
- Asat
- Definition
- Light saturated photosynthesis, measured at 1800 umol photons m-2 s-1 and at ambient atmospheric CO2 concentration (400 ppm); rates reported either on a leaf area (umol CO2 m-2 s-1), dry mass (nmol gDM-1 s-1), leaf nitrogen (umol gN-1 s-1) and leaf phosphorous (umol gN-1 s-1) basis. Measured at the prevailing leaf temperature
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Amax- Name
- Amax
- Definition
- Light saturated photosynthesis, measured at 1800 umol photons m-2 s-1 and at saturating atmospheric CO2 concentration (1500 ppm); rates reported either on a leaf area (umol CO2 m-2 s-1), dry mass (nmol gDM-1 s-1), leaf nitrogen (umol gN-1 s-1) and leaf phosphorous (umol gN-1 s-1) basis. Measured at the prevailing leaf temperature
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Rdark- Name
- Rdark
- Definition
- Leaf respiration in darkness, measured after 30 minutes in darkness, measured at ambient atmospheric CO2 concentration (400 ppm); rates reported either on a leaf area (umol CO2 m-2 s-1), dry mass (nmol gDM-1 s-1), leaf nitrogen (umol gN-1 s-1) and leaf phosphorous (umol gN-1 s-1) basis. Measured at the prevailing leaf temperature
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Rdark28- Name
- Rdark28
- Definition
- Leaf respiration in darkness, but temperature adjusted to 28oC assuming a Q10 of 2.0 for leaf respiration
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Rdark25- Name
- Rdark25
- Definition
- Leaf respiration in darkness, but temperature adjusted to 25oC assuming a Q10 of 2.0 for leaf respiration
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
blank- Name
- blank
- Definition
- blank
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
Asat- Name
- Asat
- Definition
- Light saturated photosynthesis, measured at 1800 umol photons m-2 s-1 and at ambient atmospheric CO2 concentration (400 ppm); rates reported either on a leaf area (umol CO2 m-2 s-1), dry mass (nmol gDM-1 s-1), leaf nitrogen (umol gN-1 s-1) and leaf phosphorous (umol gN-1 s-1) basis. Measured at the prevailing leaf temperature
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Amax- Name
- Amax
- Definition
- Light saturated photosynthesis, measured at 1800 umol photons m-2 s-1 and at saturating atmospheric CO2 concentration (1500 ppm); rates reported either on a leaf area (umol CO2 m-2 s-1), dry mass (nmol gDM-1 s-1), leaf nitrogen (umol gN-1 s-1) and leaf phosphorous (umol gN-1 s-1) basis. Measured at the prevailing leaf temperature
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Rdark- Name
- Rdark
- Definition
- Leaf respiration in darkness, measured after 30 minutes in darkness, measured at ambient atmospheric CO2 concentration (400 ppm); rates reported either on a leaf area (umol CO2 m-2 s-1), dry mass (nmol gDM-1 s-1), leaf nitrogen (umol gN-1 s-1) and leaf phosphorous (umol gN-1 s-1) basis. Measured at the prevailing leaf temperature
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Rdark28- Name
- Rdark28
- Definition
- Leaf respiration in darkness, but temperature adjusted to 28oC assuming a Q10 of 2.0 for leaf respiration
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
Rdark25- Name
- Rdark25
- Definition
- Leaf respiration in darkness, but temperature adjusted to 25oC assuming a Q10 of 2.0 for leaf respiration
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- micromolsPerMetreSquaredPerSecond
- Number Type
- natural
blank- Name
- blank
- Definition
- blank
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
mg N g-1- Name
- mg N g-1
- Definition
- Leaf N concentration in mg N g-1
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- milligramsPerGram
- Number Type
- natural
mg P g-1- Name
- mg P g-1
- Definition
- Leaf P concentration in mg P g-1
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- milligramsPerGram
- Number Type
- natural
N:P- Name
- N:P
- Definition
- Leaf N:P ratio, using mass based concentration
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- dimensionless
- Number Type
- natural
blank- Name
- blank
- Definition
- blank
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
LMA(g/m2)- Name
- LMA(g/m2)
- Definition
- Leaf dry mass per unit leaf area
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- gramsPerSquareMeter
- Number Type
- natural
FMA(g/m2)- Name
- FMA(g/m2)
- Definition
- Leaf fresh mass per unit leaf area
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- gramsPerSquareMeter
- Number Type
- natural
DMC- Name
- DMC
- Definition
- Leaf dry matter content (ratio of dry mass to fresh mass)
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- number
- Number Type
- natural
blank- Name
- blank
- Definition
- blank
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
Glucose mg/g- Name
- Glucose mg/g
- Definition
- Leaf glucose concentration (expressed per unit leaf dry mass)
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- milligramsPerGram
- Number Type
- natural
Fructose mg/g- Name
- Fructose mg/g
- Definition
- Leaf fructose concentration (expressed per unit leaf dry mass)
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- milligramsPerGram
- Number Type
- natural
Sucrose mg/g- Name
- Sucrose mg/g
- Definition
- Leaf sucrose concentration (expressed per unit leaf dry mass)
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- milligramsPerGram
- Number Type
- natural
Total Sugars mg/g- Name
- Total Sugars mg/g
- Definition
- Leaf total sugar concentration (expressed per unit leaf dry mass) (sum of glucose+fructose+sucrose)
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- milligramsPerGram
- Number Type
- natural
Starch mg/g- Name
- Starch mg/g
- Definition
- Leaf starch concentration (expressed per unit leaf dry mass)
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- milligramsPerGram
- Number Type
- natural
TNC mg/g- Name
- TNC mg/g
- Definition
- Leaf total non structural concentration (expressed per unit leaf dry mass) (sum of sugars plus starch)
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- milligramsPerGram
- Number Type
- natural
blank- Name
- blank
- Definition
- blank
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
C- Name
- C
- Definition
- C
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
C:N- Name
- C:N
- Definition
- C:N ratio
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
FM(g)- Name
- FM(g)
- Definition
- Fresh Mass
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- gram
- Number Type
- natural
LA(cm2)- Name
- LA(cm2)
- Definition
- Leaf area
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- squareCentimeters
- Number Type
- natural
DM(g)- Name
- DM(g)
- Definition
- Dry Mass
- Measurement Type
- ratio
- Measurement Domain
-
- Standard Unit
- gram
- Number Type
- natural
Note(dry mass)- Name
- Note(dry mass)
- Definition
- Notes
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- notes
water content %- Name
- water content %
- Definition
- Leaf water content (% leaf dry mass)
- Measurement Type
- ratio
- Measurement Domain
-
- Custom Unit
- Percentage
- Number Type
- real
blank- Name
- blank
- Definition
- blank
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- blank
Tree number- Name
- Tree number
- Definition
- Tree ID number
- Measurement Type
- nominal
- Measurement Domain
-
- Text Domain
-
- Definition
- tree id
- Number Of Records
- 131
- Physical Structure Description
-
- Object Name
- asn_fnqr_daintree_veg_leaf_phys_20120831.csv
- Size
- 49423 byte
- Text Format
-
- Number of Header Lines
- 0
- Record Delimiter
- #x0A
- Attribute Orientation
- column
- Simple Delimited
-
- Field Delimiter
- ,
- Distribution
-
Online
- URL
- lloyd.314.1
- Access
-
- Access Control
-
- Auth System
- knb
- Order
- allowFirst
- Allow:
-
Permission Principal [all] uid=Lloyd,o=unaffiliated,dc=ecoinformatics,dc=org [all] uid=atkin,o=unaffiliated,dc=ecoinformatics,dc=org [read] uid=byrnes,o=unaffiliated,dc=ecoinformatics,dc=org [all] uid=datalibrarian,o=unaffiliated,dc=ecoinformatics,dc=org [read] uid=gallagher,o=unaffiliated,dc=ecoinformatics,dc=org [read] uid=cheeseman,o=unaffiliated,dc=ecoinformatics,dc=org [read] uid=newth,o=unaffiliated,dc=ecoinformatics,dc=org [all] uid=supersite,o=unaffiliated,dc=ecoinformatics,dc=org [read] cn=allusers,o=unaffiliated,dc=ecoinformatics,dc=org
- Additional Metadata Links
-
unitListAdditional Metadata : unitList
- Metadata
-
- unitList
-
- unit
-
- @id
- micromolsPerMetreSquaredPerSecond
- @multiplierToSI
- 1000/Mw
- @name
- micromolsPerMetreSquaredPerSecond
- @parentSI
- kilogramsPerMeterSquaredPerSecond
- @unitType
- arealMolarFluxDensityRate
unitListAdditional Metadata : unitList- Metadata
-
- unitList
-
- unit
-
- @id
- millimolesPerMetreSquaredPerSecond
- @name
- millimolesPerMetreSquaredPerSecond
- @parentSI
- siemen
- @unitType
- conductance
unitListAdditional Metadata : unitList- Metadata
-
- unitList
-
- unit
-
- @id
- nanomoles per gram per second
- @name
- nanomoles per gram per second
- @parentSI
- kilogramsPerMeterSquaredPerSecond
- @unitType
- arealMassDensityRate
unitListAdditional Metadata : unitList- Metadata
-
- unitList
-
- unit
-
- @id
- nanomolesPerGramsPerSecond
- @name
- nanomolesPerGramsPerSecond
- @parentSI
- kilogramsPerMeterSquaredPerSecond
- @unitType
- arealMassDensityRate
unitListAdditional Metadata : unitList- Metadata
-
- unitList
-
- unit
-
- @id
- milligramsPerGram
- @name
- milligramsPerGram
- @parentSI
- gramsPerGram
- @unitType
- Mass Per Mass
unitListAdditional Metadata : unitList- Metadata
-
- unitList
-
- unit
-
- @id
- Percentage
- @multiplierToSI
- 0.01
- @name
- Percentage
- @parentSI
- number
- @unitType
- ratios
- Access
-
- Access Control
-
- Auth System
- knb
- Order
- allowFirst
- Allow:
-
Permission Principal [read] public [all] uid=datalibrarian,o=unaffiliated,dc=ecoinformatics,dc=org [all] uid=lloyd,o=unaffiliated,dc=ecoinformatics,dc=org [all] uid=supersite,o=unaffiliated,dc=ecoinformatics,dc=org
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