Data from: "Growth strategies and threshold responses to water deficit modulate effects of warming on tree seedlings from forest to alpine"

Dataset · Wed Jan 01 04:00:00 EST 2020

DOI:https://doi.org/10.15485/1686146· OSTI ID:1686146

Lazarus, Brynne ^[1]; Castanha, Cristina ^[2]; Germino, Matthew J. ^[3]; Kueppers, Lara M. ^[4]; Moyes, Andrew B. ^[2]

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1. U.S. Geological Survey; U.S. Geological Survey
2. Lawrence Berkeley National Laboratory
3. U.S. Geological Survey
4. University of California Berkeley

This data package contains data that were used to support conclusions drawn in “Growth strategies and threshold responses to water deficit modulate effects of warming on tree seedlings from forest to alpine”, by Lazarus, Castanha et al. 2017. Data were collected at field sites within the Alpine Treeline Warming Experiment (ATWE) on Niwot Ridge, Colorado, USA, and at the U.S. Geological Survey laboratory located in Boise, Idaho. This archive contains comma-separated-values (.csv) files, as well as the same files in Microsoft Excel (.xlsx) format, which can be opened by either Microsoft Excel, R, or any simple text editor program. There are two types of geospatial data files: .kml and ESRI shapefiles (.shp). The kml files contain placemarks, which can be opened by Google Earth, or Google Maps. The ESRI shapefiles can be opened by any geographic information system application that can read shapefiles, including ESRI's entire ArcGIS suite, and QGIS. We asked whether and how tree species differences in response to water deficit relates to their establishment along the gradient from forest to alpine. To do this, we compared growth and moisture stress responses in first-year seedlings of three species planted in common gardens subject to a factorial of heating and watering treatments below, at, and above tree line. This combination of an elevation gradient alongside warming and watering treatments enabled us to observe species differences in seedling responses to a broad set of climatic conditions.Entire seedlings were harvested at c. 3- and again at 9 weeks of age following germination/emergence in the experimental plots, and we then measured dry mass (DM) of above and belowground parts, root length, root mass fraction (RMF), relative growth rates (RGRs) from seed to 3 weeks and from 3 to 9 weeks, turgor-loss point (TLP), and photosynthetic WUE (as δ13C). Also included in this dataset (but not described in the manuscript) are measures of specific leaf area (SLA) and other variables generated by pressure-volume curves (saturated water content, osmotic potential at full turgor, elastic modulus).

• Research Organization: Environmental System Science Data Infrastructure for a Virtual Ecosystem; Subalpine and Alpine Species Range Shifts with Climate Change: Temperature and Soil Moisture Manipulations to Test Species and Population Responses (Alpine Treeline Warming Experiment)
• Sponsoring Organization: U.S. DOE > Office of Science > Biological and Environmental Research (BER)
• DOE Contract Number: FG02-07ER64457; SC0007071
• OSTI ID: 1686146
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
Aboveground biomass
Alpine tree line
Belowground biomass
Climate experiment
EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS
EARTH SCIENCE > BIOSPHERE > VEGETATION
EARTH SCIENCE > CLIMATE INDICATORS > BIOSPHERIC INDICATORS
Ecophysiology
Elastic modulus
Estimated dry seed weight
Foliar area
Foliar weight
Germination dates
Growth
Harvest dates
Osmotic potential
Plant-climate interactions
Relative growth rate
Relative water content
Root length
Root mass fraction
Saturated water content
Seed weight
Seedling age
Seedling establishment
Soil temperature
Soil water content
Specific leaf area
Total biomass
Turgor loss point
Water stress
Water use efficiency
Water use efficiency as δ13C