RCCZO -- Sap Flow, Vegetation -- Sap flux among sagebrush communities -- Reynolds Creek Experimental Watershed -- (2015-2017)


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Created: Feb 25, 2020 at 9:07 p.m.
Last updated: Apr 24, 2020 at 5:23 p.m.
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Abstract

Artemisia spp. play a significant role in hydrological cycling of sagebrush steppe ecosystems. These sagebrush ecosystems cover a wide elevation gradient and are dominated by different species and subspecies of sagebrush. Water balance of sagebrush ecosystems varies along an elevation gradient with pulse-driven ecosystems located at lower elevation and drier sites and water storage (i.e., snow-dominated precipitation) ecosystems located at higher elevation and wetter sites. Thus, it is difficult to predict how water fluxes in these ecosystems will respond to changing climatic conditions along an elevation gradient. The primary objective of this study was to characterize sap flux in three sagebrush communities located along a rain- to snow-dominated regime by comparing hourly, daily, and seasonal sap flux patterns and their relationships with environmental factors. Sap flux was monitored between June 2015 and October 2017 using heat balance sensors. Meteorological data was also measured from adjacent weather stations, including air temperature (Tair), vapor pressure deficit (VPD), solar radiation (SR), and relative humidity (RH). Soil moisture content was also monitored at different depths in three communities during study period. We hypothesized that sap flux would be greater in the shrubs located at the highest, snow-dominated site compared to lower, rain-dominated sites. Our results indicated that daily sap flux was greater (~ 17%) in A.t. wyomingensis at the rain-dominated site (WBS) compared to A.t. vaseyana at the snow-dominated site, likely due to a comparatively longer growing season at the lower site. Sap flux drives several physiological response of desert plants (i.e., gas exchange, water transport, plant hydraulics) and will be impacted by climatic changes. Therefore, accurate estimation of plant water use (i.e., sap flux) and how various environmental factors influence sap flux in different sagebrush communities will help in predicting the role of sagebrush in hydrological cycling in future scenarios.

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Resource Level Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Longitude
-116.7452°
Latitude
43.2019°

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Additional Metadata

Name Value
DOI 10.18122/reynoldscreek/15/
Recommended Citation Sharma, Harmandeep; Reinhardt, Keith; and Lohse, Kathleen A.. (2019). Data for a Comparison of Sap Flux Among Three Sagebrush Communities Spanning Rain-to Snow-Dominated Precipitation Regimes [Data set]. Retrieved from 10.18122/reynoldscreek/15/
BSU ScholarWorks Link https://scholarworks.boisestate.edu/reynoldscreek/15/

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
National Science Foundation Reynolds Creek Critical Zone Observatory EAR-1331872

Contributors

People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
USDA-ARS Northwest Watershed Research Center Reynolds Creek Experimental Watershed
Idaho State University

How to Cite

Sharma, H., K. Reinhardt, K. A. Lohse (2020). RCCZO -- Sap Flow, Vegetation -- Sap flux among sagebrush communities -- Reynolds Creek Experimental Watershed -- (2015-2017), HydroShare, http://www.hydroshare.org/resource/f673e61b1e5944c5822c5e612ff65b0c

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

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