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.
Soil Hydrology and Stream Field Work 2017
OSU graduate student Karla Jarecke digs into soil for sampling
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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.
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depth measurement of soil pit used for sampling, measuring, and describing soil
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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.
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depth measurement of soil pit used for sampling, measuring, and describing soil
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OSU graduate student Allison Swartz and OSU undergraduate student Cedar Mackaness measure specific conductivty in a stream in the Andrews Forest
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YSI water quality sonde used to measure temperature, specific conductivity and dissolved oxygen in a stream.
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OSU graduate student Allison Swartz and OSU undergraduate student Cedar Mackaness measure specific conductivty in a stream in the Andrews Forest
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Eastern tributary to McRae Creek at the Andrews Forest
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OSU graduate student Allison Swartz and OSU undergraduate student Cedar Mackaness measure specific conductivty in a stream in the Andrews Forest
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OSU graduate student Allison Swartz prepares samples to measure gas exchange from the stream.
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OSU graduate student Allison Swartz and OSU undergraduate student Cedar Mackaness measure specific conductivty and nutrient concentrations in a stream in the Andrews Forest
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Stream sampling equipment used to measure stream gas exchange and nutrient demand.
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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.
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OSU graduate student Allison Swartz collects water sample to measure nitrate, phosphate, and chloride concentrations.
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OSU undergraduate student, Cedar Mackaness, writes down data about stream nutrient tracer experiment.
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OSU graduate student Allison Swartz collects water sample for nutrient analysis.
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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
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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
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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
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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
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taking a sample of streamwater, which will later be analyzed for SF6 concentration for gas exchange stream tracer release.
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labeling a vial of streamwater
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OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, measure gross primary production in stream metabolism chambers in a Andrews Forest stream
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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.
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OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, measure gross primary production in stream metabolism chambers in a Andrews Forest stream
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OSU undergraduate, Cedar Mackaness, participates in a SF6 gas stream tracer release at the Andrews Forest
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Lookout Creek in the HJ Andrews Experimental Forest LTER site
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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
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Lookout Creek in the HJ Andrews Experimental Forest LTER site
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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
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Lookout Creek in the HJ Andrews Experimental Forest LTER site
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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
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Ferns along Lookout Creek in the HJ Andrews Experimental Forest LTER site
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stream sampling equipment for SF6 gas tracer measurements
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Watershed 1 at the Andrews Forest 2017
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OSU graduate student Allison Swartz set up stream tracer experiment to measure gas exchange to calculate stream metabolism.
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Research flagging at soil moisture monitoring site
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OSU graduate student, Allison Swartz, and OSU undergradute, Cedar Mackaness, set up stream tracer experiment to measure gas exchange to calculate stream metabolism.
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REU student Lauren Roof (left) and OSU graduate student Karla Jarecke (right) at a soil hydrology research site
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REU student Lauren Roof (left) and OSU graduate student Karla Jarecke (right) at a soil hydrology research site
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OSU graduate student, Allison Swartz, and OSU undergradute, Cedar Mackaness, set up stream tracer experiment to measure gas exchange to calculate stream metabolism.
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soil is removed from a large pit and temporarily stored on a tarp
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OSU graduate student Allison Swartz set up stream tracer experiment to measure gas exchange to calculate stream metabolism.
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REU student Lauren Roof (left) and OSU graduate student Karla Jarecke (right) at a soil hydrology research site
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OSU graduate student Allison Swartz set up stream tracer experiment to measure gas exchange to calculate stream metabolism.
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REU student Lauren Roof (left) and OSU graduate student Karla Jarecke (right) at a soil hydrology research site
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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.
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OSU graduate student Karla Jarecke (left) and REU student Lauren Roof sample soil
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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.
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OSU graduate student Karla Jarecke (left) and REU student Lauren Roof sample soil
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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.
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OSU graduate student Karla Jarecke digs into soil for sampling
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OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, in a riparian forest.
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REU student Lauren Roof labelling bags for soil samples
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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.
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