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37 results for “drought experiment”
Data from a drought experiment on saplings of Crataegus monogyna in a common garden setting with three provenances (Belgian, Swedish and Spanish)
<p><span>Data are from the common shrub <em>Crataegus monogyna</em> that experienced two summer droughts, each followed by rewatering. The experimental design consisted of a common garden with potted saplings from a local Belgian, a Swedish and a Spanish-Pyrenean provenance. We quantified the effects on growth and leaf phenology, focusing on the legacies in the year following the droughts. Responses were influenced by the severity of the drought and by its timing. </span></p>
Data from a controlled drought experiment in greenhouse conditions on saplings of Prunus spinosa
<p>Dataset with measurements and observations on saplings of Prunus spinosa in a common garden setting (three European populations are included), that were treated with water withholding in the summer of 2021 in greenhouse conditions.</p> <p>One dataset contains the data on all 274 saplings that are included in the experiment. The second dataset contains measurements and counts of stomata on a subset of 57 saplings. The two datasets can be connected by the plant ID.</p>
Rapid adaptive evolution to drought in a subset of plant traits in a large-scale climate change experiment
<p>Rapid evolution of traits and of plasticity may enable adaptation to climate change, yet solid experimental evidence under natural conditions is scarce. Here, we imposed rainfall manipulations (+30%, control, -30%) for ten years on entire natural plant communities in two Eastern Mediterranean sites. Additional sites along a natural rainfall gradient and selection analyses in a greenhouse assessed whether potential responses were adaptive. In both sites, our annual target species <i>Biscutella didyma</i> consistently evolved earlier phenology and higher reproductive allocation under drought. Multiple arguments suggest that this response was adaptive: it aligned with theory, corresponding trait shifts along the natural rainfall gradient, and selection analyses under differential watering in the greenhouse. However, another seven candidate traits did not evolve, and there was little support for evolution of plasticity. Our results provide compelling evidence for rapid adaptive evolution under climate change. Yet, several non-evolving traits may indicate potential constraints to full adaptation.</p>
data from a drought stress experiment on Cornus sanguineum in a common garden
<p>Data obtained from a drought stress experiment performed in 2021 on potted plants from the shrub species Cornus sanguineum in a common garden with two provenances, a local (Belgian) and a Pyrenean.</p>
Rapid adaptive evolution to drought in a subset of plant traits in a large-scale climate change experiment
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Data from: Positive effects of tree species diversity on productivity switch to negative after severe drought mortality in a temperate forest experiment
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Glacier Lakes Ecosystems Experiments Site site, station Wyoming Region 10, Upper Platte, study of Palmer Drought Severity Index in units of dimensionless on a monthly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Glacier Lakes Ecosystems Experiments Site (GLA) contains Palmer Drought Severity Index measurements in dimensionless units and were aggregated to a monthly timescale.
Glacier Lakes Ecosystems Experiments Site site, station Wyoming Region 10, Upper Platte, study of Palmer Drought Severity Index in units of dimensionless on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Glacier Lakes Ecosystems Experiments Site (GLA) contains Palmer Drought Severity Index measurements in dimensionless units and were aggregated to a yearly timescale.
Pastures and climate extremes: Impacts of cool season warming and drought on the productivity of key pasture species in a field experiment
<p>Shifts in the timing, intensity and/or frequency of climate extremes, such as severe drought and heatwaves, can generate sustained shifts in ecosystem function with important ecological and economic impacts for rangelands and managed pastures. The Pastures and Climate Extremes experiment (PACE) in Southeast Australia was designed to investigate the impacts of a severe winter/spring drought (60% rainfall reduction) and, for a subset of species, a factorial combination of drought and elevated temperature (ambient +3 °C) on pasture productivity. The experiment included nine common pasture and Australian rangeland species from three plant functional groups (C<sub>3</sub> grasses, C<sub>4</sub> grasses and legumes) planted in monoculture. Winter/spring drought resulted in productivity declines of 45% on average and up to 74% for the most affected species (<i>Digitaria eriantha</i>) during the 6-month treatment period, with eight of the nine species exhibiting significant yield reductions. Despite considerable variation in species' sensitivity to drought, C<sub>4</sub> grasses were more strongly affected by this treatment than C<sub>3</sub> grasses or legumes. Warming also had negative effects on cool-season productivity, associated at least partially with exceedance of optimum growth temperatures in spring and indirect effects on soil water content. The combination of winter/spring drought and year-round warming resulted in the greatest yield reductions. We identified responses that were either additive such that there was only as significant warming effect under drought (<i>Festuca</i>), or less-than-additive, where there was no drought effect under warming (<i>Medicago</i>), compared to ambient plots. Results from this study highlight the sensitivity of diverse pasture species to increases in winter and spring drought severity similar to those predicted for this region, and that anticipated benefits of cool-season warming are unlikely to be realised. Overall, the substantial negative impacts on productivity suggest that future, warmer, drier climates will result in shortfalls in cool-season forage availability, with profound implications for the livestock industry and natural grazer communities.</p>
Microarthropod abundance data of a drought experiment comparing organic and conventional farming
<p>In Central Europe summer droughts are increasing in frequency which threatens production and biodiversity in agroecosystems. The potential of different farming systems to mitigate detrimental drought effects on soil animals is largely unknown. We investigated the effects of simulated drought on the abundance and community composition of soil microarthropods (Collembola, Oribatida, Meso‑, Pro‑ and Astigmata) in winter wheat fields under long-term conventional and organic farming in the DOK trial, Switzerland. We simulated drought by excluding 65% of the ambient precipitation during the wheat growing season from March to June 2017. The abundance of Collembola and Oribatida declined more consistently in conventionally compared to organically managed fields under simulated drought. The abundance of Collembola as well as Meso‑, Pro‑ and Astigmata, but not the abundance of Oribatida, increased in deeper soil layers due to simulated drought, suggesting vertical migration as drought avoidance strategy. The species composition of Oribatida communities, but not of Collembola communities, differed significantly between drought treatments as well as between farming systems. Soil carbon content was a major factor structuring Oribatida communities. Our results suggest that organic farming buffers negative effects of drought on soil microarthropods, presumably due to higher soil carbon content, and associated higher soil moisture and improved soil structure. This potential of organic farming systems to mitigate consequences of future droughts on soil biodiversity is promising and needs further exploration across larger climatic and spatial scales and should be extended to other groups of soil biota.</p>
Pastures and climate extremes: Impacts of cool season warming and drought on the productivity of key pasture species in a field experiment
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Microarthropod abundance data of a drought experiment comparing organic and conventional farming
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Data from: Species richness effects on grassland recovery from drought depend on community productivity in a multisite experiment
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Data from: Plant functional groups mediate drought resistance and recovery in a multi-site grassland experiment
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The experimental manipulation of atmospheric drought: Teasing out the role of microclimate in biodiversity experiments
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Role of ZmCCT in drought tolerance of maize by transcriptome and DAP-seq experiments
GEO Series GSE240962. Zea mays. 15 samples. Type: Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing.
Sugarcane drought experiment under field conditions
GEO Series GSE125070. Saccharum hybrid cultivar (mixed); Saccharum officinarum. 12 samples. Type: Expression profiling by array.
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OpenNeuro
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