Add new study: Creek_2018

[yangsophieee]

Add study on coordination between leaf, stem, and root hydraulics and gas exchange in three arid-zone angiosperms during severe drought and recovery.

Questions for review:

• I can't really figure out how many replicates there are for a lot of these traits
  • Experiment 1: "As the drought progressed, individual plants were targeted for leaf gas exchange, whole canopy transpiration, and midday water potential... harvested for leaf, stem, and root hydraulic measurements in the lab."
  • Experiment 2: "During recovery, leaf-level gas exchange and whole canopy transpiration, as well as leaf, stem, and root hydraulics were measured in subgroups of 4–5 plants per species at 1, 3, 14, and 28 days after soil rewetting. A smaller group of control plants (n = 3) per species were maintained under well-watered conditions throughout the experiment."
  • "we measured gas exchange, E, and midday Ψleaf in a number of additional plants to those targeted for hydraulics."
  • "In both the drought response and recovery experiments, we measured leaf-level photosynthesis... Leaves that had been measured for gas exchange (one per individual) were... measured"
  • It's very difficult to estimate how many replicates they did when they didn't specify explicitly.
• Quite a few traits for which I'm not sure what to match to, maybe they aren't in AusTraits, so I've put them in the questions section