details of a 1979 map of the study sit, with stems diagrammed and mapped by hand

Dave Shaw shares signs of Armillaria root rot in a dead tree in the sample plot

compass and map orientation

field gear: a hammer to adjust tree tags in the field, vest and notebook, a DBH tape, and a hard hat

details of a 1979 map of the study site, with stems diagrammed and mapped by hand

strands of Armillaria root rot from a dead tree in the sample plot

recording data in the field

Jessie Hild measures DBH and assesses tree health

Rob Pabst shares a map of the day's study site

Rob Pabst, project coordinator

a tagged tree

Amanda Brackett, field crew member, in the study plot

details of a 1979 map of the study sit, with stems diagrammed and mapped by hand

signs of Armillaria root rot in a dead tree in the sample plot

Bryan Sipe, field crew member, and a tagged tree

Bryan Sipe, field crew member, in the study plot

field data documents

signs of Armillaria root rot in a dead tree in the sample plot

Mack Creek

Dave Shaw shares signs of Armillaria root rot in a dead tree in the sample plot

The Pacific Northwest Permanent Sample Plot Program (PSP) reviews a map of the day's sample plot. The map was first created in 1979.

gear for field work. Flagging, data sheets, and a hammer, to adjust tree tags in the field

signs of Armillaria root rot in a dead tree in the sample plot

Mack Creek

Rob Pabst (left) and Jessie Hild (right) stretch a DBH tape around a large western red cedar tree

Rob Pabst shares a map of the day's study site

forest canopy

signs of Armillaria root rot in a dead tree in the sample plot

A tagged tree in a vegetation study plot along Mack Creek

details of a 1979 map of the study sit, with stems diagrammed and mapped by hand

field crew heading toward the field site

Dave Bell (left) and Rob Pabst (right) record data on tree mortality

field crew members Amanda Brackett and Jessie Hild measuring DBH (diameter breast height) of a large douglas fir tree

David Shaw, Principal Investigator, OSU

field crew heading toward the field site

Rob Pabst measuring DBH

field crew members Amanda Brackett and Jessie Hild measuring DBH (diameter breast height) of a large douglas fir tree

Rob Pabst, project coordinator

field crew heading toward the field site

measuring DBH (diameter breast height)

field crew members Amanda Brackett and Jessie Hild measuring DBH (diameter breast height) of a large douglas fir tree

David Bell, Research Forester, Pacific Northwest Research Station

David Bell, Research Forester, Pacific Northwest Research Station, USFS, shares a LIDAR image of canopy height in the day's field plot

Mack Creek

A detailed view of a DBH tape around a large douglas fir tree. Its diameter was 209 centimeters (82 inches)

field crew reviews aerial images of the day's study site

forest canopy

Mack Creek

Rob Pabst, project coordinator of the Pacific Northwest Permanent Sample Plot Program (PSP)

Rob Pabst, project coordinator, shares data on trends in tree mortality over four decades

Jessie Hild, Amanda Brackett, Brian Sipe review maps and images of the day's field site

a tagged tree in a sample plot

old growth forest near Mack Creek

David Bell shares LIDAR images and tree height data of the day's sample plot

David Bell, Research Forester, Pacific Northwest Research Station, USFS, shares a LIDAR image of canopy height in the day's field plot

Amanda Brackett, field crew leader, measuring DBH of a large western red cedar

Bryan Sipe, field crew member, navigates over large, downed trees

David Shaw measures tree diameter with a DBH tape

forest canopy in an old-growth stand

recording data in the field

Bryan Sipe, field crew member, navigates over large, downed trees

old growth forest near Mack Creek

Rob Pabst shares data on tree mortality

Dave Shaw (left) and Rob Pabst (right)

Bryan Sipe, field crew member, navigates over large, downed trees

the field crew measures an old-growth tree

Lina DiGregorio, LTER Program Coordinator

field crew

The field crew moves through a study plot, being careful to watch for wasp nests!

the field crew measures an old-growth tree

David Bell (center), Research Forester, Pacific Northwest Research Station, USFS, shares a LIDAR image of canopy height in the day's field plot

a tagged tree in a sample plot

Jessie Hild treats a wasp sting

the field crew measures an old-growth tree

old-growth forest stand

field crew members Amanda Brackett and Jessie Hild measuring DBH (diameter breast height)

Mack Creek flume

the field crew measures an old-growth tree

signs of Armillaria root rot in a dead tree in the sample plot

David Shaw measures tree diameter with a DBH tape

field crew members Amanda Brackett and Jessie Hild measuring DBH (diameter breast height)

Mack Creek flume

old growth forest near Mack Creek

Dave Shaw shares signs of Armillaria root rot in a dead tree in the sample plot

the field crew measures an old-growth tree

Rob Pabst, recording data in the field

Mack Creek gage house

the field crew talks with Ian Vorster, Editor of OSU's research magazine, Terra

Dave Shaw shares signs of Armillaria root rot in a dead tree in the sample plot

Jessie Hild and Amanda Brackett measure and record tree diameter of a large douglas fir tree

Rob Pabst, recording data in the field

Jessie Hild, noting tree health

Rob Pabst checks a tagged tree

Dave Shaw shares signs of Armillaria root rot in a dead tree in the sample plot

Jessie Hild and Amanda Brackett measure and record tree diameter of a large douglas fir tree

The veg PSP crew prepares for field work. L to R: Jessie Hild, crew member, OSU; Amanda Brackett, crew leader, OSU; David Shaw, Principal Investigator, OSU; Bryan Sipe, crew member, OSU; David Bell, Research Forester, Pacific Northwest Research Station

Jessie Hild, reading a tree tag

Blue huckleberry (Vaccinium deliciosum)

Dave Shaw shares signs of Armillaria root rot in a dead tree in the sample plot

Rob Pabst records field data

2018 PNW PSP crew. L to R: Bryan Sipe, crew member, OSU; David Bell, Research Forester, PNW Research Station; Amanda Brackett, crew leader, OSU; Jessie Hild, crew member, OSU; Rob Pabst, project coordinator, OSU; David Shaw, Principal Investigator, OSU

an old tree tag, perhaps one of the originals from the 1960s

bark of pacific yew (Taxus brevifolia)

field crew boots, and a cut away section of tree bark, exposing signs of armillaria root rot in a dead tree in the study site

Jessie Hild and Amanda Brackett measure and record tree diameter of a large douglas fir tree

2018 veg PSP crew: David Shaw, Principal Investigator, OSU; Bryan Sipe, crew member, OSU; Rob Pabst, project coordinator, OSU; David Bell, Research Forester, PNW Research Station; Jessie Hild, crew member, OSU; Amanda Brackett, crew leader, OSU

an old tree tag, perhaps one of the originals from the 1960s

field crew measuring size, in diameter, of trees within their plot

signs of Armillaria root rot from a dead tree in the sample plot

Amanda Brackett

2018 field crew of the Pacific Northwest PSP: David Shaw, PI, OSU; Bryan Sipe, crew member, OSU; Rob Pabst, project coordinator, OSU; David Bell, Research Forester, PNW Research Station; Jessie Hild, crew member, OSU; Amanda Brackett, crew leader, OSU

Amanda Brackett and an old western red cedar

Bryan Sipe, field crew member, measuring DBH (diameter breast height) with a tape

Rob Pabst, project coordinator of the Pacific Northwest Permanent Sample Plot Program (PSP)

field crew of the Pacific Northwest Permanent Sample Plot Program (PSP)

2018 veg PSP crew: David Shaw, PI, OSU; David Bell, Research Forester, Pacific Northwest Research Station; Bryan Sipe, crew member, OSU; Rob Pabst, project coordinator, OSU; Amanda Brackett, crew leader, OSU; Jessie Hild, crew member, OSU

Rob Pabst, recording data in the field

Bryan Sipe, field crew member, measuring DBH (diameter breast height) with a tape

Rob Pabst, project coordinator of the Pacific Northwest Permanent Sample Plot Program (PSP)

forest rivulet at the Andrews Forest

Rob Pabst shares a map of the day's study site

Jessie Hild, field crew member, measuring DBH (diameter breast height)

a tagged tree in a sample plot of the Pacific Northwest Permanent Sample Plot Program (PSP)

Jessie Hild and Bryan Sipe measure DBH

details of a 1979 map of the study sit, with stems diagrammed and mapped by hand

Jessie Hild, field crew member, measuring DBH (diameter breast height)

Dave Bell (left) and Rob Pabst (right) record data on tree mortality

Jessie Hild and Bryan Sipe measure DBH

Rob Pabst shares a map of the day's study site

Amanda Brackett, field crew leader, recording data in the field on tree mortality

Dave Bell (left), Rob Pabst (right), and Amanda Brackett, record data on tree mortality

measuring DBH (diameter breast height) with a DBH tape

details of a 1979 map of the study sit, with stems diagrammed and mapped by hand

Dave Shaw looks at strands of Armillaria root rot in a dead tree in the sample plot

compass and map orientation

a hammer, used to adjust tree tags in the field