ATMOSPHERIC CARBON DIOXIDE
Type of resources
Topics
Keywords
Contact for the resource
Provided by
Years
Formats
Update frequencies
status
-
The record contains leaf traits information measured on <i>Eucalyptus tereticornis</i> trees from the EucFACE site in Cumberland Plain in 2012. Data on tree height, leaf dry mass per unit leaf area (LMA), stomatal conductance to water vapour (<i>gs</i>), light saturated leaf net CO<sub>2</sub>assimilation rates (A<sub>sat</sub>) and maximum net CO<sub>2</sub> exchange rate at light- and CO<sub>2</sub>-saturation (A<sub>max</sub>) are provided.
-
This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Robson Creek Rainforest site, in the dry season 2012 and wet season 2014.
-
This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Daintree Rainforest, Cape Tribulation site, in the dry season 2012 and wet season 2014.
-
This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Warra Tall Eucalypt site, in summer 2012 and winter 2013.
-
This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Calperum Mallee site, in 2013.
-
This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Alice Mulga site in 2014
-
This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Cumberland Plain site in 2014.
-
This dataset contains leaf functional trait measurements describing leaf structure, chemistry and metabolism collected from the Great Western Woodlands site in 2013.
-
<br>This release consists of flux tower measurements of the exchange of energy and mass between the surface and the atmospheric boundary-layer using eddy covariance techniques. Data were processed using PyFluxPro (v3.4.17) as described by Isaac et al. (2017). PyFluxPro produces a final, gap-filled product with Net Ecosystem Exchange (NEE) partitioned into Gross Primary Productivity (GPP) and Ecosystem Respiration (ER).</br> <br><em>Eucalyptus obliqua</em> forests dominate the vegetation below 650 m where they exist as fire-maintained communities. On fertile soils these forests attain mature heights in excess of 55 m: the tallest <em>E. obliqua</em> reaches a height of 90 m. The flux station is installed in a stand of tall, mixed-aged <em>E. obliqua</em> forest (77 and >250 years-old) with a rainforest understorey and a dense man-fern (<em>Dicksonia antarctica</em>) ground-layer, on a small flat of elevation 100 m adjacent to the Huon River. The understorey vegetation progresses from wet sclerophyll (dominated by <em>Pomaderris apatala</em> and <em>Acacia dealbata</em>) to rainforest (dominated by <em>Nothofagus cunninghamii</em>, <em>Atherosperma moschatum</em>, <em>Eucryphia lucida</em> and <em>Phyllocladus aspleniifolius</em>) with increasing time intervals between fire events. The site supports prodigous quantities of coarse woody debris as is characteristic of these fire-maintained eucalypt forests on fertile sites in southern Tasmania. The soil at the flux site is derived from Permian mudstone and has a gradational profile with a dark brown organic clayey silt topsoil overlying a yellow brown clay. The climate is classified as temperate with a mild summer and no dry season. Mean annual precipitation is 1700 mm with a relatively uniform seasonal distribution. Summer temperatures peak in January (8.4 °C to 19.2 °C) with winter temperatures reaching their lowest in July (2.6 °C to 8.4 °C).</br> <br>The instruments are mounted at the top of an 80 m tall guyed steel lattice tower. Supplementary measurements above the canopy include temperature, humidity, windspeed, wind direction, rainfall, incoming and reflected shortwave radiation and net radiation. An open-path gas analyser (EC150) was replaced by a closed-path gas analyser (EC155) at the end of January 2015. Soil moisture content is measured using time domain reflectometry. Soil heat fluxes and temperature are also measured. Micro-meteorology (CO<sub>2</sub>, H<sub>2</sub>O, energy fluxes) and meteorology (temperature, humidity, wind speed and direction, rainfall) were measured from 2013 to late 2016, but the dataset is incomplete due to ongoing problems since changing the open-path IRGA to a closed path system (CPEC200) during 2015. Soil data (moisture, heat flux, temperature) are complete for the time period.</br>
-
<br>This release consists of flux tower measurements of the exchange of energy and mass between the surface and the atmospheric boundary-layer using eddy covariance techniques. Data were processed using PyFluxPro (v3.4.17) as described by Isaac et al. (2017). PyFluxPro produces a final, gap-filled product with Net Ecosystem Exchange (NEE) partitioned into Gross Primary Productivity (GPP) and Ecosystem Respiration (ER).</br><br> Great Western Woodlands (GWW) comprise a 16 million ha mosaic of temperate woodland, shrubland and mallee vegetation in south-west Western Australia. The region has remained relatively intact since European settlement, owing to the variable rainfall and lack of readily accessible groundwater. The woodland component is globally unique in that nowhere else do woodlands occur at as little as 220 mm mean annual rainfall. Further, other temperate woodlands around the world have typically become highly fragmented and degraded through agricultural use. Great Western Woodlands Site was established in 2012 in the Credo Conservation Reserve. The site is in semi-arid woodland and was operated as a pastoral lease from 1907 to 2007. The core 1 ha plot is characterised by <em>Eucalyptus salmonophloia</em> (salmon gum), with <em>Eucalyptus salubris</em> and <em>Eucalyptus clelandii</em> dominating other research plots. The flux station is located in salmon gum woodland.