The stream in Watershed 2

The stream in Watershed 2

Researchers in Watershed 2, sampling for stream invertebrates

Researchers in Watershed 2, sampling for stream invertebrates

Bill Gerth uses his hand to gently disturb the stream bottom and dislodge stream invertebrates as the water flows into the Surber net

Streamwater flows into the Surber sampler which catches stream invertebrates

OSU Undergraduate student Meagan White inspects the sample in a sieve

The Surber sample cup is emptied into a sieve

The Surber sample cup is emptied into a sieve

All sample materials from the sieve are washed into the sample bag for preservation. Samples are sorted and insects identified at a later time.

The preserved sample from the Surber sampler, with detritus and stream invertebrates

The preserved sample from the Surber sampler, with detritus and stream invertebrates

Meagan White adds ethanol to the sample bag before sealing it

Sealing the preserved sample

Researchers in the stream in Watershed 2, sampling for stream invertebrates

In the foreground, student researcher April Hersey climbs a steep slope to reach trees in the study plot. In the background, student researcher Aaron Evans assesses the diameter at breast height (DBH) of a tree.

Dr. Catalina Segura at the HJ Andrews Experimental Forest.

Undergraduate researcher April Hersey records the species and tag number of the tree that she is about to core. The tag number will allow the researchers to look up additional data about these trees from long-term dataset on tree growth and mortality.

Research Experience for Undergraduates (REU) student April Hersey cores a tree in the HJ Andrews Experimental Forest.

Research Experience for Undergraduates (REU) student April Hersey cores a tree in the HJ Andrews Experimental Forest.

Research Experience for Undergraduates (REU) student Aaron Evans cores a tagged tree within an extended reference stand plot in the HJ Andrews Experimental Forest.

In the field, tree cores are temporarily stored in plastic straws and labeled with location, year, stand number, tree species, and a unique ID for the tree.

Research Experience for Undergraduates (REU) student Aaron Evans looks at potential trees to core at the HJ Andrews Experimental Forest.

Research Experience for Undergraduates (REU) student April Hersey prepares herself to core a tree in the HJ Andrews Experimental Forest.

Research Experience for Undergraduates (REU) student Aaron Evans cores a tree in the HJ Andrews Experimental Forest. The borer (0.5cm in diameter) extract a small section of wood from tree trunk: the core.

Research Experience for Undergraduates (REU) student Aaron Evans cores a tree in the HJ Andrews Experimental Forest. The borer (0.5cm in diameter) extract a small section of wood from tree trunk: the core.

Research Experience for Undergraduates (REU) student Aaron Evans cores a tree in the HJ Andrews Experimental Forest. The borer (0.5cm in diameter) extract a small section of wood from tree trunk: the core.

An REU student extracts a core from a tree using a tree ring borer. In the picture the outermost part of the core (the bark) is being extracted.

The tree core is slipped into a plastic straw for safe storage. It will be labeled and taken to a laboratory for further study.

Two labeled tree core samples (left) were extracted per tree, and the coring tool (blue borer).

Two labeled tree core samples (left) and the coring tool (blue borer).

Research Experience for Undergraduates (REU) student Aaron Evans reviews the study plot map on his smartphone using a GPS app. Sampled trees show up as points on the map.

Research Experience for Undergraduate (REU) students April Hersey (left) and Aaron Evans (right) at the HJ Andrews Experimental Forest.

Dr. Catalina Segura (left), Aaron Evans (middle), and April Hersey (right).

REU students April Hersey (L) and Aaron Evans (R) identify trees to be cored for a study on vegetation dynamics. The cores will allow researchers to learn more about trends in radial growth and climate-growth relationships over time.

Dr Dana Warren unfurls a large spool of 1/2 inch irrigation tubing used in the warming portion of the study

The dewatering experiment involves using irrigation tubing to circumvent a section of stream. This is the discharge reduction reach with 4" bypass tubing

Undergraduate technician Casey Warburtun organizes tubing

Dr Dana Warren, a stream ecologist, is part of the research team trying to understand the effects of drought and warming on streams

Dr Catalina Segura, a geomorphologist, is part of the research team trying to understand the effects of drought and warming on streams

Graduate student Allison Swartz (left) and faculty researcher Catalina Segura (right) ready the pump which will move streamwater through coils of black tubing

Graduate student Allison Swartz inspects the pump and hose used to initiate the siphons for the warming lines. Water will be pulled from this section of the stream, warmed through black tubing sitting in the sun, and then deposited back into the stream

coils of black tubing and a repurposed air mattress hold the stream water and warm it in the sunshine

coils of black tubing and a repurposed air mattress hold the stream water and warm it in the sunshine

Dr. Dana Warren (left) and Dr Lenka Kuglerova (right), a visiting scientist from Umeå University in Sweden, organize and place tubing for the experiment

the warming lines (1/2 inch irrigation tubing) follow the streambed and will eventually empty into a section downstream

the experimental drought reach of the experiment

A student researcher pulls the warming tubing through the study area

An undergradate researcher, Casey Warburtun, runs the warming tubing over the stream discharge reduction reach down to the warming reach

the study area of the dewatering and drought experiment

Undergraduate researcher Casey Warburton (front) and graduate student Allison Swartz (back) run the 1/2 irrigation warming lines past the low-flow reach to the warming reach.

Marking the different warming irrigration lines

Left to right: PhD student Paola Arroyo Vargas and undergraduate researchers April Hersey, Desmond Willson, and Aaron Evans after a day of field work in the burned area at the HJ Andrews Experimental Forest.

Graduate student Madison Sutton (left) and field technician Haley Martens (right) prepare a mist net

Graduate student Madison Sutton untangles and readies a mist net

Graduate student Madison Sutton installs a mist net

Field technician Haley Martens places bird decoys near the mist net

Decoy birds are placed around the mist net to lure birds into the mist net

After the mist net is installed reearchers sit quietly and watch for birds to fly into the net

A Hermit Wabler is captured in the net and gently removed for measurements before being released

Researchers measure the health and breeding status of each netted bird before releasing the birds

Tools of the trade

A ruler is used to measure wing length

Calipers are used to measure the length of the tarsus, or leg bone

Data for each bird is recorded on paper and then entered into a computer

By blowing on the bird's chest researchers can see fat and cloacal development to measure health and breeding phenology

Tail feathers are inspected for wear and tear

Tiny blood samples are taken from the bird and are put through genomic analysis to determine bird health

Data for each bird is recorded on paper and then entered into a computer

After the data on the birds are recorded the birds are released back into the wild, unharmed, and the nets are removed.

Researchers survey trees in Reference Stand 2 as they plan for a dendroecology study

Researcher Dr. Andres Holz with a tagged tree in Reference Stand 2

Researchers arrive at Watershed 2 to install soil pits in the hillslope along the stream.

Field technicians Bailey Brockamp (right) and India Gerhardt (left) take a break near the Watershed 2 flume.

Field technician Bailey Brockamp digs a soil pit for sensor installation.

Field technicians work to dig soil pits near the Watershed 2 gauge station.

Experimental Watershed 2 before entering the flume and sediment basin.

Field technician Bailey Brockamp collects a soil sample for laboratory analysis.

A soil sample is collected in Watershed 2 for laboratory analysis.

Field equipment displaying the logo of Catalina Segura's Watershed Processes Laboratory.

Field technician India Gerhardt (left) and graduate student Zachary Perry (right) work on digging a soil pit for instrumentation.

Researchers at work in Watershed 2.

The sediment basin and flume of Watershed 2

The sediment basin and flume of Watershed 2

Field technician India Gerhardt prepares conduit for soil sensor cables near the Watershed 2 flume.

Field technicians Casey Warburton (left) and India Gerhardt (right) install a data logger.

Undergraduate students Casey Warburton (front) and India Gerhardt (back) run sensor cables through conduit.

Graduate student Zachary Perry installs a soil moisture sensor.

Field equipment used to install soil moisture sensors.

Field technicians Casey Warburton (left) and India Gerhardt (right) run sensor cables through conduit.

Field technicians dig a soil pit in Watershed 2 for soil sensor instrumentation.

Field technicians dig a soil pit in Watershed 2 for soil sensor instrumentation.

Field technicians India Gerhardt (left) and Casey Warburton (right) dig a soil pit in Watershed 2 for soil sensor instrumentation.

Graduate student Zachary Perry in Watershed 2 of the HJ Andrews Experimental Forest

Soil sensors installed in the wall of a soil pit in Watershed 2.

A soil moisture sensor. The probes go into the soil and measure volumetric water content along with other data.

Graduate student Zachary Perry installs a soil moisture sensor.

Soil moisture sensors ready to be installed in soil pits.

Graduate student Zachary Perry runs soil moisture sensor cables through aluminum conduit.

Graduate student Zachary Perry with an ISCO water sampler in Watershed 2.

An ISCO automated water sampler.

Soil moisture sensors installed and ready to connect to the data logger.

Aluminum conduit is used to protect soil moisture sensor cables from rodents as it runs along the ground to the data logger.

Researchers set up and open the mist net, used to safely capture birds

Graduate student Madison Sutton stretches the mist net through an opening in the forest

Researchers set up and stretch out the mist net, used to gently capture birds

Bird decoys are set up near the mist net to lure in curious or territorial birds

Field technician Haley Martens sits quietly to wait for birds to fly into the mist net

A Swainson's Thrush in the mist net

Birds are safely removed from the mist net and are held for data collection and measurements before being released

A tiny aluminium band with a unique ID number is placed on the leg of the bird

A tiny aluminium band with a unique ID number is placed on the leg of the bird

Calipers are used to measure the length of the tarsus, or leg bone

Madison Sutton measures health of the newly banded birds by blowing on the bird's abdomen to measure fat and breeding phenology.

Flight feathers are assessed for wear and tear

The bird is placed into a cotton bag and is weighed

After all measurements, the bird is released, unharmed, into the area where it was captured

The mist net stretches across an opening in the forest

A guage is used to measure the diameter of the leg of a bird and determine the correct band size

A Chestnut-backed Chickadee is placed into a cloth bag and weighed on a scale. This guy weighed about 8 grams. That's like 8 paperclips.

A Chestnut-backed Chickadee just before release

Field technician Halay Martens (left) and graduate student Madison Sutton (right) at the HJ Andrews Experimental Forest

Packing up the truck after a day of field work

Rubus sp. in flower

Fragaria sp. in flower

Alder thicket on a spring morning.

Sarcosphaera fungus opening in the forest duff.

North, Middle, and South Sister sitting above the clouds, taken from Lookout Mountain

Rhododendron macrophyllum blooming in the understory of old-growth

Waterfall flowing down mossy bedrock in Watershed 2.

Lichens growing on old-growth Douglas Fir branches.

Fairy Slipper (Calypso bulbosa)

Forest Director, Mark Schulze climbing an old-growth Douglas Fir tree to install microclimate sensors.

Upper Lookout Valley from 80 meters in the canopy of an old-growth Douglas Fir tree.

Coral fungus in Watershed 2

Cauliflower fungus in Watershed 2

Field crew on the steep slope of WS1 burned in the Holiday Farm fire

Field crew re-establishes vegetation study plots that were burned on the steep slope of WS1

Field crew re-establishes vegetation study plots that were burned on the steep slope of WS1

Field technician Lauren Dorsch in Watershed 1

Field technician Lauren Dorsch in Watershed 1

Field technician Lauren Dorsch in Watershed 1

Field crew remeasures vegetation in a permanent study plot

Field crew remeasures vegetation in a permanent study plot

Field crew remeasures vegetation in a permanent study plot

Field technician Lauren Dorsch measures tree diameter

Field technician Lillian Evergreen records data on vegetation

Field technician Lauren Dorsch records data on vegetation

Field crew takes note of species type and vigor of plants in the study plots

Field technician Lillian Evergreen records data on vegetation