Lookout Steep Meadow, plot 9 (LOS9)

Frissell Northern Exposure, plot 10 (FNE10)

Frissell Northern Exposure, plot 10 (FNE10)

Lookout Bog Meadow, plot unknown (LOB?)

Frissell RP1 Meadow, plot unknown (RP1?)

Frissell Northern Exposure, plot 5 (FNE5)

Lookout Steep Meadow, plot unknown (LOS?)

Graduate student Sarah Kelly shares her work on the Discovery Trail at HJA Day 2018.

Julia Jones (OSU) (left) and Steve Wondzell (USFS PNW) (right) hold up sticks showing the heights of highest, average, and lowest rainfall on record at the Andrews Forest

Suzanne Remillard introduces "Tools: Then and Now" which covers wireless technology, sampling hardware, and drones.

Anniversary cake for the 70th anniversary of the establishment of the HJ Andrews Experimental Forest

Julia Jones (OSU) talks about long-term trends

Steve Wondzell (USFS PNW) talks about rainfall, runoff, and hydrology

Al Levno, retired USFS, stands next to a stream guage like the ones he monitored in streams at the Andrews Forest in the 1960s and 1970s

Adam Kennedy talks about the wireless sensor network across the Andrews Forest and how it has evolved with changing technologies

Don Henshaw shares information on how our tools have changed over time, and he displays a photo of himself working many years prior

Don Henshaw shares information on how our tools have changed over time, from paper to digital

Mark Schulze, OSU, shares safety information and underlines the value of modern-day hard hats

Michael Paul Nelson, OSU, shares information on the Long-Term Ecological Research (LTER) program and the partnership with Oregon State University

Darren Cross, USFS WNF, gives an introduction to the Willamette National Forest and connections with Andrews Forest and management

Paul Anderson, USFS PNW, provides a history of the HJ Andrews Experimental Forest and this year's 70th anniversary of its establishment

Marie Tosa (OSU graduate student) (left), and Brooke Penaluna (USFS PNW) (right), share information on "Fur and Fins": mammals and fish

An HJA Day attendee inspects a sculpin fish up close, during the "Fur and Fins" morning presentation station

Marie Tosa (OSU graduate student), shares information on mammals and birds

HJA Day attendees look at mammal skulls during the "Fur and Fins" morning presentation station

HJA Day attendees look at mammal skeletons during the "Fur and Fins" morning presentation station

HJA Day attendees look at mammal skeletons during the "Fur and Fins" morning presentation station

Marie Tosa (OSU graduate student), shares information on mammals and birds

Al Levno, retired USFS (left), and Greg Downing, USFS (right), stand next to a precip sampling device. Greg collects samples at the Andrews Forest now; Al used to collect the same types of samples several decades ago.

HJA Day attendees look at mammal skeletons during the "Fur and Fins" morning presentation station

David Paul Bayles (left) shares his photography of the Andrews Forest with HJA Day attendees

Sam Schmieding (OSU) (left) shares his curated collection of documents about Horace J. Andrews, after whom the HJ Andrews Experimental Forest was named

HJA Day attendees look over historical documents about the HJ Andrews Experimental Forest

David Shaw (OSU, center) shows attendees a Western hemlock branch with dwarf mistletoe fruiting bodies

David Paul Bayles (right) shares his photography of the Andrews Forest with HJA Day attendees

Zheng Dong (OSU, far left) and David Bell (USFS PNW, left) discuss how climate change might affect forests in the Pacific Northwest

David Bell (USFS PNW) holds a tree corer, an instrument used to take cores from trees. Tree cores can show scientists growth patterns of a tree over time.

HJA Day attendees look at LIDAR images (top) and an older technology, landsat images (right)

David Bell (USFS PNW) talks about remote sensing and what scientists can learn about looking at changes over the long term

David Shaw (OSU, center) points out a Western hemlock tree infested with dwarf mistletoe.

Zheng Dong (OSU) shares information on modeling and the value of long-term data in trying to see ahead

Frissell RP2 Meadow, plot unknown (FRP2?)

Carpenter Ridge Meadow, plot unkown (CPR?)

Lookout Main Meadow, plot unknown (LOM?)

Lookout Main Meadow, plot unknown (LOM?)

Lookout Bog Meadow, plot unknown (LOB?)

climbing a tree at the Andrews Forest

insect exclosures

understory at the Andrews forest

the flume allows measurements of stream flow

apartments

moth

hard hats and materials for student participants in the Canopy Connections program

understory at the Andrews forest

the road is being reclaimed by the forest

climbing a tree at the Andrews Forest

Rufous hummingbird

Sarah Ward tree climbing

The Canopy Connections program

graduate student mammologist, Marie Tosa, tracks small mammals with a radio device

graduate student mammologist, Marie Tosa, baits for small mammals to study

graduate student mammologist, Marie Tosa

a camera that is motion activated to capture images of mammals

graduate student mammologist, Marie Tosa

bearing tree

a camera that takes periodic photos to track changes in vegetation over time

instruments for measuring weather

climbing a tree at the Andrews Forest

understory at the Andrews forest

bark and moss on a Douglas fir tree

Watershed 1 gage house

Watershed 1 gage house

Mack Creek stream gage

the equipment measures stream flow rates over time

moss and lichen can be indicators of a healthy forest

Rough-skinned newt

moss

Mack Creek stream gage

moss

this log is part of a 200-year log decomposition study

insect exclosures

The Canopy Connections program

road at the Andrews Forest

Instrumentation near the discovery tree

the sensor measures evapotranspiration

sensors measure temperature

the cafeteria

moss on a stump

Pacific dogwood

understory at the Andrews forest

lichen on tree bark

tree tag in the HJ Andrews Experimental Forest

OSU PhD student, Marie Tosa, resets a small mammal trap

OSU PhD student, Marie Tosa, resets a small mammal trap

OSU PhD student, Marie Tosa, resets a small mammal trap

OSU PhD student, Marie Tosa, checks small mammal trap

small mammal tomahawk trap set in the forest

small mammal Tomahawk trap set in the forest

OSU PhD student, Marie Tosa, with small mammal trap

OSU PhD student, Marie Tosa, checks small mammal trap

OSU PhD student, Marie Tosa, with radio telemetry gear

OSU PhD student, Marie Tosa, with radio telemetry gear

OSU PhD student, Marie Tosa, resets small mammal trap

OSU PhD student, Marie Tosa, with radio telemetry gear

field technician, Rebecca Peterson, resets a trap

forest understory, HJ Andrews Experimental Forest

McRae Creek after fall rains begin.

A fallen tree in Mack Creek (tributary to Lookout Creek) has made a large pool below a small waterfall.

Above electrofishing site for stream vertebrate survey.

Large wood in Mack Creek (tributary to Lookout Creek) providing cover for fish and salamanders.

Lookout Creek in the HJ Andrews Experimental Forest LTER site

Ferns along Lookout Creek in the HJ Andrews Experimental Forest LTER site

Lookout Creek in the HJ Andrews Experimental Forest LTER site

Lookout Creek in the HJ Andrews Experimental Forest LTER site

OSU graduate student Allison Swartz set up stream tracer experiment to measure gas exchange to calculate stream metabolism.

stream sampling equipment for SF6 gas tracer measurements

OSU graduate student, Allison Swartz, and OSU undergradute, Cedar Mackaness, set up stream tracer experiment to measure gas exchange to calculate stream metabolism.

OSU graduate student, Allison Swartz, and OSU undergradute, Cedar Mackaness, set up stream tracer experiment to measure gas exchange to calculate stream metabolism.

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

OSU undergraduate, Cedar Mackaness, participates in a SF6 gas stream tracer release at the Andrews Forest

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.

labeling a vial of streamwater

OSU graduate student Allison Swartz set up stream tracer experiment to measure gas exchange to calculate stream metabolism.

taking a sample of streamwater, which will later be analyzed for SF6 concentration for gas exchange stream tracer release.

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

OSU graduate student Allison Swartz set up stream tracer experiment to measure gas exchange to calculate stream metabolism.

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.

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.

OSU graduate student Allison Swartz and OSU undergraduate student Cedar Mackaness measure specific conductivty and nutrient concentrations in a stream in the Andrews Forest

OSU graduate student Allison Swartz and OSU undergraduate student Cedar Mackaness measure specific conductivty in a stream in the Andrews Forest

OSU graduate student Allison Swartz and OSU undergraduate student Cedar Mackaness measure specific conductivty in a stream in the Andrews Forest

OSU graduate student Allison Swartz and OSU undergraduate student Cedar Mackaness measure specific conductivty in a stream in the Andrews Forest

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.

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.

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.

OSU undergraduate student, Cedar Mackaness, and OSU graduate student, Allison Swartz, in a riparian forest.

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.

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.

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

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

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

OSU graduate student Karla Jarecke (left) and REU student Lauren Roof sample soil

OSU graduate student Karla Jarecke (left) and REU student Lauren Roof sample soil

REU student Lauren Roof (left) and OSU graduate student Karla Jarecke (right) at a soil hydrology research site

REU student Lauren Roof (left) and OSU graduate student Karla Jarecke (right) at a soil hydrology research site

soil is removed from a large pit and temporarily stored on a tarp

REU student Lauren Roof (left) and OSU graduate student Karla Jarecke (right) at a soil hydrology research site

REU student Lauren Roof (left) and OSU graduate student Karla Jarecke (right) at a soil hydrology research site

Research flagging at soil moisture monitoring site

Watershed 1 at the Andrews Forest 2017