Data Archive

HF260

Soil Temperature and Water Content in Macrosystems Biodiversity Project at Harvard Forest 2011-2012

Related Publications

Data

hf260-01: hf soil temperature and moisture (preview)

Overview

Lead: Brian Enquist, Robert Waide, James Brown
Investigators: Vanessa Buzzard
Contact: Information Manager
Start date: 2011
End date: 2012
Status: complete
Location: Harvard Forest
Latitude: +42.53780 to +42.54054 degrees
Longitude: -72.17899 to -72.17329 degrees
Elevation: 352 to 363 meter
Datum: WGS84
Taxa:
Release date: 2023
Language: English
EML file: knb-lter-hfr.260.4
DOI: digital object identifier
EDI: data package
DataONE: data package
Related links:

Study type: short-term measurements
Research topic: biodiversity studies; international research projects; regional studies
LTER core area: population studies, organic matter movement
Keywords: biodiversity, soil moisture, soil temperature, water content
Abstract:
Patterns of biodiversity, such as the increase toward the tropics and the peaked curve during ecological succession, are fundamental phenomena for ecology. Such patterns have multiple, interacting causes, but temperature emerges as a dominant factor across organisms from microbes to trees and mammals, and across terrestrial, marine, and freshwater environments. However, there is little consensus on the underlying mechanisms, even as global temperatures increase and the need to predict their effects becomes more pressing.

The purpose of this project is to generate and test theory for how temperature impacts biodiversity through its effect on biochemical processes and metabolic rate. A combination of standardized surveys in the field and controlled experiments in the field and laboratory measure diversity of three taxa -- trees, invertebrates, and microbes -- and key biogeochemical processes of decomposition in seven forests distributed along a geographic gradient of increasing temperature from cold temperate to warm tropical.

Readings of soil temperature and soil moisture were taken with HOBO sensors from November 2011 to November 2012. These sensors were installed at five experimental tree growth plots installed by the Enquist Lab (PI, Brian Enquist) from the University of Arizona as part of a macrosystems biodiversity and latitude project supported by the National Science Foundation under Cooperative Agreement DEB#1065836.
Methods:
One HOBO Micro Station (Part # H21-002) was installed in each of the five Gentry tree plots at all six experimental sites to monitor continuous variation in soil moisture using Soil Moisture Smart Sensor Part # S-SMB-M005 (http://macroeco.lternet.edu/sites/all/themes/b2_nature/HOBOSoilMoistureSpecifications.pdf) and temperature using 12-Bit Temperature Smart Sensor Part # S-TMB-M002 (http://wpc.306e.edgecastcdn.net/80306E/onsetcomp_com/files/manual_pdfs/7105-I-MAN-S-TMB.pdf). The data logger was secured to a tree.

Both sensors were buried 10-15 cm underground by the following method: A hole was dug and the soil probe was inserted with the 2 in side vertical into the wall of the hole until the black part and cord were the only things visible. The temperature probe was placed alongside it and both were buried. The HOBO was set up to record soil moisture and temperature every hour.
Organization: Harvard Forest. 324 North Main Street, Petersham, MA 01366, USA. Phone (978) 724-3302. Fax (978) 724-3595.
Project: The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts. (ROR).
Funding: National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210.
Use: This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.
License: Creative Commons Zero v1.0 Universal (CC0-1.0)
Citation: Enquist B, Waide R, Brown J. 2023. Soil Temperature and Water Content in Macrosystems Biodiversity Project at Harvard Forest 2011-2012. Harvard Forest Data Archive: HF260 (v.4). Environmental Data Initiative: https://doi.org/10.6073/pasta/06f3aa2591270ae52a8efc590587d2cf.

Detailed Metadata

hf260-01: hf soil temperature and moisture

reading.id: unique identification number of the logged reading
site: full name of experimental site where the reading was taken
plot: plot code as defined by the three letter site code (HFR = Harvard Forest LTER) plus the letter "T" to define Gentry tree plots 1-5. (e.g. Gentry plot 1 at Harvard Forest LTER is HFRT1)
datetime: date and time of logged reading
date: date of logged reading
time: time of the logged reading
soilt: soil temperature measured in degrees Celsius by a device ordered through OnSet, product number S-TMB-M002. Measurement range: -40 to +100 degrees C. Accuracy: < +/-0.2 degrees C from 0-50C (unit: celsius / missing value: NA)
water.content: volumetric (m3/m3) water content of the soil measured with an instrument ordered through OnSet, product name S_SMB-M005. Range in soil: 0-0.450. Accuracy +/-0.041. Resolution +/- 0.0006 (unit: meterCubedPerMeterCubed / missing value: NA)
error: codes denoting errors in some of the water content measurements. A and C error values should be discarded before data is used for analysis. B values can be retained and set to 0
- A: loggers were launched before placed in the ground
- B: data is within the range of device error of 0.94
- C: value below threshold