Abstract
Summary Grasslands recovering from drought have repeatedly been shown to outperform non‐drought‐stressed grasslands in biomass production. The mechanisms that lead to the unexpectedly high biomass production in grasslands recovering from drought are, however, not understood. To disentangle plant‐intrinsic and plant‐extrinsic (soil) drought legacy effects on grassland recovery from drought, we designed a factorial field experiment where Lolium perenne plants that were exposed to either a 2‐month drought or to well‐watered control conditions were transplanted into control and drought‐stressed soil and rewetted thereafter. Drought and rewetting (DRW) resulted in negative drought legacy effects of formerly drought‐stressed plants (DRW p ) compared with control plants (Ctr p ) when decoupled from soil‐mediated DRW effects, with DRW p showing less aboveground productivity (−13%), restricted N nutrition, and higher δ 13 C compared with Ctr p . However, plants grown on formerly drought‐stressed soil (DRW s ) showed enhanced aboveground productivity (+82%), improved N nutrition, and higher δ 13 C values relative to plants grown on control soil (Ctr s ), irrespective of the plants' pretreatment. Our study shows that the higher post‐drought productivity of perennial grasslands recovering from drought relative to non‐drought‐stressed controls is induced by soil‐mediated DRW legacy effects which improve plant N nutrition and photosynthetic capacity and that these effects countervail negative plant‐intrinsic drought legacy effects.
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Claims 8
Claim · model-written summary
Formerly drought-stressed Lolium perenne plants had 13% less aboveground productivity than control plants when decoupled from soil-mediated effects.
- Taxon
- Lolium perenne
Lolium perennee0 - Treatment
- formerly drought‐stressed plantse1
- Outcome
- aboveground productivitye1
- Direction
- lesse1
- Value
- −13%e1
- Comparator
- control plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lolium perenne plants that were exposed to either a 2‐month drought or to well‐watered control conditions”
e1“Drought and rewetting (DRW) resulted in negative drought legacy effects of formerly drought‐stressed plants (DRW p ) compared with control plants (Ctr p ) when decoupled from soil‐mediated DRW effects, with DRW p showing less aboveground productivity (−13%)”
Claim · model-written summary
Formerly drought-stressed Lolium perenne plants had restricted N nutrition compared with control plants when decoupled from soil-mediated effects.
- Taxon
- Lolium perenneLolium perennee0
- Treatment
- formerly drought‐stressed plantse1
- Outcome
- N nutritione2
- Direction
- restrictede2
- Comparator
- control plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lolium perenne plants that were exposed to either a 2‐month drought or to well‐watered control conditions”
e1“Drought and rewetting (DRW) resulted in negative drought legacy effects of formerly drought‐stressed plants (DRW p ) compared with control plants (Ctr p ) when decoupled from soil‐mediated DRW effects, with DRW p showing less aboveground productivity (−13%)”
e2“restricted N nutrition, and higher δ 13 C compared with Ctr p”
Claim · model-written summary
Formerly drought-stressed Lolium perenne plants had higher δ 13 C than control plants when decoupled from soil-mediated effects.
- Taxon
- Lolium perenneLolium perennee0
- Treatment
- formerly drought‐stressed plantse1
- Outcome
- δ 13 Ce2
- Direction
- highere2
- Comparator
- control plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lolium perenne plants that were exposed to either a 2‐month drought or to well‐watered control conditions”
e1“Drought and rewetting (DRW) resulted in negative drought legacy effects of formerly drought‐stressed plants (DRW p ) compared with control plants (Ctr p ) when decoupled from soil‐mediated DRW effects, with DRW p showing less aboveground productivity (−13%)”
e2“restricted N nutrition, and higher δ 13 C compared with Ctr p”
Claim · model-written summary
Lolium perenne plants grown on formerly drought-stressed soil had 82% more aboveground productivity than plants on control soil, irrespective of pretreatment.
- Taxon
- Lolium perenneLolium perennee0
- Treatment
- formerly drought‐stressed soile3
- Outcome
- aboveground productivitye3
- Direction
- enhancede3
- Value
- +82%e3
- Qualifier
- irrespective of the plants' pretreatmente4
- Comparator
- control soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lolium perenne plants that were exposed to either a 2‐month drought or to well‐watered control conditions”
e3“plants grown on formerly drought‐stressed soil (DRW s ) showed enhanced aboveground productivity (+82%), improved N nutrition, and higher δ 13 C values relative to plants grown on control soil (Ctr s )”
e4“irrespective of the plants' pretreatment”
Claim · model-written summary
Lolium perenne plants grown on formerly drought-stressed soil had improved N nutrition compared with plants on control soil.
- Taxon
- Lolium perenneLolium perennee0
- Treatment
- formerly drought‐stressed soile3
- Outcome
- N nutritione3
- Direction
- improvede3
- Comparator
- control soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lolium perenne plants that were exposed to either a 2‐month drought or to well‐watered control conditions”
e3“plants grown on formerly drought‐stressed soil (DRW s ) showed enhanced aboveground productivity (+82%), improved N nutrition, and higher δ 13 C values relative to plants grown on control soil (Ctr s )”
e4“irrespective of the plants' pretreatment”
Claim · model-written summary
Lolium perenne plants grown on formerly drought-stressed soil had higher δ 13 C values than plants on control soil.
- Taxon
- Lolium perenneLolium perennee0
- Treatment
- formerly drought‐stressed soile3
- Outcome
- δ 13 C valuese3
- Direction
- highere3
- Comparator
- control soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lolium perenne plants that were exposed to either a 2‐month drought or to well‐watered control conditions”
e3“plants grown on formerly drought‐stressed soil (DRW s ) showed enhanced aboveground productivity (+82%), improved N nutrition, and higher δ 13 C values relative to plants grown on control soil (Ctr s )”
Claim · model-written summary
Soil-mediated drought legacy effects, which improve plant N nutrition and photosynthetic capacity, explain the higher post-drought productivity of grasslands.
- Taxon
- Lolium perenneLolium perennee0
- Treatment
- soil‐mediated DRW legacy effectse5
- Outcome
- higher post‐drought productivitye5
- Qualifier
- improve plant N nutrition and photosynthetic capacitye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lolium perenne plants that were exposed to either a 2‐month drought or to well‐watered control conditions”
e5“the higher post‐drought productivity of perennial grasslands recovering from drought relative to non‐drought‐stressed controls is induced by soil‐mediated DRW legacy effects”
e6“which improve plant N nutrition and photosynthetic capacity”
Claim · model-written summary
Soil-mediated legacy effects countervail negative plant-intrinsic drought legacy effects.
- Taxon
- Lolium perenneLolium perennee0
- Outcome
- negative plant‐intrinsic drought legacy effectse7
- Qualifier
- countervaile7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lolium perenne plants that were exposed to either a 2‐month drought or to well‐watered control conditions”
e7“these effects countervail negative plant‐intrinsic drought legacy effects”
The same questions in other papers
drought · nutrient: content · Lolium perenne (perennial ryegrass)Positive and negative results
1 in the opposite direction
- negative
drought · yield · Lolium perenne (perennial ryegrass)Positive and negative results
2 papers in the same direction as this paper · 7 in the opposite direction
- negative
- negative
- negative
6 papers more in this group
See all 10 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.