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shornum / MA-water

Meta-analysis of water addition and removal experiments
MIT License
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Next Steps #6

Open stephpenn1 opened 3 years ago

stephpenn1 commented 3 years ago
bpbond commented 3 years ago

Thank you @shornum ! oddballs

shornum commented 3 years ago

4051 Risch was performed in a grassland in Wyoming. Study numbers look correct. Paper references how some sites were 'drier' than others. Site 5 was the wettest site, and the sites become progressively drier as it goes down to site 1. Lowest fluxes generally were found at the driest site (site 1) and highest fluxes occurred at the site where average growing season soil moisture was highest (site 5)

shornum commented 3 years ago

6166 Cotrufo was performed in a forest. Study numbers look correct. Soil moisture levels seem to have been lower to begin with, so that may be why the drought treatment didn't decrease SR, especially since it was only a 10% decrease in precip.

shornum commented 3 years ago

1421 Borken was performed in a forest. Something seems off in the numbers. There should be two rows - control and drought for 1993. Data is given for 1994 but it only had manipulation, no control. The control _Percentcontrol should be 100, and the drought _Percentcontrol should be 63.996 (583/911). _Rsannual for control 1993 should be 320.5, for drought 1993 it should be 298.1. I can update in main "Updated Variance and N" data sheet, when needed @bpbond @stephpenn1

shornum commented 3 years ago

10066 Dominguez was performed in a wet shrubland. Study numbers look correct. Study explains this - Stimulation of respiration was greatest during the summer months (experimental drought period) when it was directly linked to the reduction in soil moisture (Fig. 3a), but persisted into autumn months, the rewetting period, when respiration rates were up to 70 % higher, compared to control. Soil drainage should be changed in main data sheet.

shornum commented 3 years ago

10816 Munir was performed in a peatland. Study numbers look correct. Study explains this - The stored C is present in the form of highly mineralizable organic C protected in water-saturated, anoxic conditions and is highly sensitive to warmer and drier climate.

shornum commented 3 years ago

11859 Escolar was performed in a grassland. Study numbers look correct but there are different additional manipulations. The study seemed to focus more on how biocrust can affect the response of soil respiration to rainfall exclusion. The levels tested were control and rainfall exclusion in poorly-developed biocrust communities and in well-developed biocrust communities.

bpbond commented 3 years ago

Thank you @shornum ! Very useful. Let's talk shortly.