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Monie Bay - Tree Sap Flux - May 2021 - ongoing

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Created:	Jan 23, 2023 at 7:49 p.m.
Last updated:	Nov 16, 2023 at 6:06 p.m.
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Sharing Status:	Discoverable
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Abstract

This dataset includes sap flux (cm3 cm-2 hr-1) measurements from instrumented trees at the Delaware Forested site (Milford Neck) for the CZNet Coastal Cluster. Tree sap flux reflects tree water use within xylem, rather than flow of tree sap (within phloem). Twelve Pinus taeda (loblolly pine) trees were initially selected for instrumentation. Selection was based on high canopy integrity and large DBH that was uniform across the site and reflected tree maturity. Selected trees were instrumented with heat pulse velocimetry (HPV) sap flow sensors (Implexx model, Edaphic Scientific, Melbourne, Australia). Sensors consist of three equidistant 30 mm-long probes: a central heating probe, a downstream, and an upstream probe. Each probe contains an inner and outer thermistor for functional redundancy and cross-sectional averaging. The Implexx HPV sensors work functionally similar to thermal dissipation probes. Sensors were installed in tree trunks at 1 m in height above the soil surface on the south side of the tree trunk. Bark thickness was shaved to <0.5 cm thickness in a small area for the probe installation so that thermistors were installed in sapwood. Data from sensors was collected every 30 minutes with a CR300 datalogger (Campbell Scientific). Power was supplied with a 7W solar panel and stored in a 12V sealed lead-acid battery. Because the datalogger batteries occasionally died or failed to charge by the solar power (particularly in mid-summer, when the forest canopy was full), there may be gaps in the record.

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Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

Monie Bay

North Latitude

38.2144°

East Longitude

-75.8043°

South Latitude

38.2073°

West Longitude

-75.8148°

Temporal

Start Date:
End Date:

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Credits

Funding Agencies

This resource was created using funding from the following sources:

Agency Name	Award Title	Award Number
National Science Foundation (NSF)	Collaborative Research: Network Cluster: The Coastal Critical Zone: Processes that transform landscapes and fluxes between land and sea	2012319

How to Cite

Leff, R., K. Gedan (2023). Monie Bay - Tree Sap Flux - May 2021 - ongoing, HydroShare, http://www.hydroshare.org/resource/e228eeaa2beb47558115d652770feaf0

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

http://creativecommons.org/licenses/by/4.0/

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