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Soil Hydrology and Stream Field Work 2017

Graduate student Karla Jarecke studied how water moves through soil on the steep slopes of Watershed 1 at the Andrews Forest. Karla and an NSF-funded Research Experience for Undergraduate (REU) student, Lauren Roof, dug soil pits to sample and describe soil, and used metal rods to measure soil moisture at different depths. Graduate student Allison Swartz studied how light affects streams. Allison and her undergraduate field assistant, Cedar Mackaness, collected water samples to measure gas exchange and nutrients like nitrate, phosphate, and chloride concentrations.  This photo gallery highlights some of their field work in summer 2017.

Watershed 1 at the Andrews Forest 2017
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_001

Research flagging at soil moisture monitoring site
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_002

REU student Lauren Roof (left) and OSU graduate student Karla Jarecke (right) at a soil hydrology research site
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_003

REU student Lauren Roof (left) and OSU graduate student Karla Jarecke (right) at a soil hydrology research site
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_004

soil is removed from a large pit and temporarily stored on a tarp
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_005

REU student Lauren Roof (left) and OSU graduate student Karla Jarecke (right) at a soil hydrology research site
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_006

REU student Lauren Roof (left) and OSU graduate student Karla Jarecke (right) at a soil hydrology research site
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_007

OSU graduate student Karla Jarecke (left) and REU student Lauren Roof sample soil
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_008

OSU graduate student Karla Jarecke (left) and REU student Lauren Roof sample soil
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_009

OSU graduate student Karla Jarecke digs into soil for sampling
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_010

REU student Lauren Roof labelling bags for soil samples
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_011

OSU graduate student Karla Jarecke digs into soil for sampling
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_012

depth measurement of soil pit used for sampling, measuring, and describing soil
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_013

depth measurement of soil pit used for sampling, measuring, and describing soil
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_014

YSI water quality sonde used to measure temperature, specific conductivity and dissolved oxygen in a stream.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_015

Eastern tributary to McRae Creek at the Andrews Forest
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_016

OSU graduate student Allison Swartz prepares samples to measure gas exchange from the stream.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_017

Stream sampling equipment used to measure stream gas exchange and nutrient demand.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_018

OSU graduate student Allison Swartz collects water sample to measure nitrate, phosphate, and chloride concentrations.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_019

OSU undergraduate student, Cedar Mackaness, writes down data about stream nutrient tracer experiment.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_020

OSU graduate student Allison Swartz collects water sample for nutrient analysis.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_021

OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, sample SF6 and nutrient and nutrient concentrations for a stream tracer release in McRae tributary-east Andrews Forest stream
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_022

OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, sample SF6 and nutrient and nutrient concentrations for a stream tracer release in McRae tributary-east Andrews Forest stream
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_023

OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, sample SF6 and nutrient and nutrient concentrations for a stream tracer release in McRae tributary-east Andrews Forest stream
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_024

OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, sample SF6 and nutrient and nutrient concentrations for a stream tracer release in McRae tributary-east Andrews Forest stream
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_025

taking a sample of streamwater, which will later be analyzed for SF6 concentration for gas exchange stream tracer release.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_026

labeling a vial of streamwater
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_027

OSU graduate student Allison Swartz inspects a vial of streamwater for bubbles, which will later be analyzed for SF6 concentration to study gas exchange in the stream.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_028

OSU undergraduate, Cedar Mackaness, participates in a SF6 gas stream tracer release at the Andrews Forest
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_029

OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, sample the water for SF6 concentrations to measure gas exchange for stream metabolism calculations in an Andrews Forest stream
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_030

OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, sample the water for SF6 concentrations to measure gas exchange for stream metabolism calculations in an Andrews Forest stream
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_031

OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, sample the water for SF6 concentrations to measure gas exchange for stream metabolism calculations in an Andrews Forest stream
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_032

stream sampling equipment for SF6 gas tracer measurements
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_033

OSU graduate student Allison Swartz set up stream tracer experiment to measure gas exchange to calculate stream metabolism.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_034

OSU graduate student, Allison Swartz, and OSU undergradute, Cedar Mackaness, set up stream tracer experiment to measure gas exchange to calculate stream metabolism.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_035

OSU graduate student, Allison Swartz, and OSU undergradute, Cedar Mackaness, set up stream tracer experiment to measure gas exchange to calculate stream metabolism.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_036

OSU graduate student Allison Swartz set up stream tracer experiment to measure gas exchange to calculate stream metabolism.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_037

OSU graduate student Allison Swartz set up stream tracer experiment to measure gas exchange to calculate stream metabolism.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_038

A section of the eastern tributary to McRae Creek that is part of a study to assess the affect of light from canopy gaps on streams ecosystems.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_039

A section of the eastern tributary to McRae Creek that is part of a study to assess the affect of light from canopy gaps on streams ecosystems.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_040

A section of the eastern tributary to McRae Creek that is part of a study to assess the affect of light from canopy gaps on streams ecosystems.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_041

OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, in a riparian forest.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_042

A section of the eastern tributary to McRae Creek that is part of a study to assess the affect of light from canopy gaps on streams ecosystems.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_043

OSU graduate student, Allison Swartz, and OSU undergraduate student, Cedar Mackaness, standing in the middle of a canopy gap cut to test the impact of light on stream ecosystems.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_044

A section of the eastern tributary to McRae Creek that is part of a study to assess the affect of light from canopy gaps on streams ecosystems.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_045

OSU graduate student Allison Swartz and OSU undergraduate student Cedar Mackaness measure specific conductivty in a stream in the Andrews Forest
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_046

OSU graduate student Allison Swartz and OSU undergraduate student Cedar Mackaness measure specific conductivty in a stream in the Andrews Forest
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_047

OSU graduate student Allison Swartz and OSU undergraduate student Cedar Mackaness measure specific conductivty in a stream in the Andrews Forest
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_048

OSU graduate student Allison Swartz and OSU undergraduate student Cedar Mackaness measure specific conductivty and nutrient concentrations in a stream in the Andrews Forest
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_049

A section of the eastern tributary to McRae Creek that is part of a study to assess the affect of light from canopy gaps on streams ecosystems.
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_050

OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, measure gross primary production in stream metabolism chambers in a Andrews Forest stream
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_051

OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, measure gross primary production in stream metabolism chambers in a Andrews Forest stream
Photographed by: Lina DiGregorio
Date: 8/26/2017
Photo number: aek_052

Lookout Creek in the HJ Andrews Experimental Forest LTER site
Photographed by: Lina DiGregorio
Date: 8/27/2017
Photo number: aek_053

Lookout Creek in the HJ Andrews Experimental Forest LTER site
Photographed by: Lina DiGregorio
Date: 8/27/2017
Photo number: aek_054

Lookout Creek in the HJ Andrews Experimental Forest LTER site
Photographed by: Lina DiGregorio
Date: 8/27/2017
Photo number: aek_055

Ferns along Lookout Creek in the HJ Andrews Experimental Forest LTER site
Photographed by: Lina DiGregorio
Date: 8/27/2017
Photo number: aek_056