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Learn about Vegetation & LOD Surveys for ecosystem inventory, wildlife habitat relationship identification, and forest management. Techniques include line intercept sampling and plot layouts for data collection. Discover key components and benefits for sustainable resource management.
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Groundstory Vegetation & LOD: Sampling Short Plants and Other Stuff on the Ground ESRM 304
Vegetation & LOD Surveys • Part of multi-resource inventory • Need information on the entire ecosystem • Need to gain information on • Forest structure • Variability in conditions • System processes
Vegetation & LOD Surveys • Info on structure, variability, processes … • Builds inventory on critical habitat conditions • Enables I.D. of wildlife habitat relationships • Aids grouping of stands into productivity classes • Enhances grouping of stands into risk classes • Allows development of management targets for • Biological diversity maintenance • Managing potential fire hazard • Silvicultural manipulations
Vegetation & LOD Surveys • Surveys are best stratified for efficiency • Coarse woody litter (Large Organic Debris) • Use transects (line intersect) • Groundstory component • Use transects (line intercept) sometimes fixed-area • Understory component • Use transects (line intercept) sometimes fixed-area • Overstory component • Use fixed-area plots (variable-area)
Vegetation & LOD Example Survey • Forest Inventory & Analysis (FIA) • In continuous operation since 1930 • Mission • "make and keep current a comprehensive inventory and analysis of the present and prospective conditions of and requirements for the renewable resources of the forest and rangelands of the US." • Collects, analyzes, and reports information on the status and trends of America’s forests: how much forest exists, where it exists, who owns it, and how it is changing
Vegetation & LOD Example Survey • Forest Inventory & Analysis (FIA) • Information collected on • Soil quality • Down woody debris • Vegetation structure and diversity • Crown condition • Tree mortality • Tree growth • Lichen communities • Vegetation health
ESRM 304 Vegetation & LOD Survey Plot system layout Line Intercept Line Intersect Random Directions
ESRM 304 Vegetation & LOD Survey Line Intercept Sampling for vegetation cover & composition
ESRM 304 Vegetation & LOD Survey Plot system layout Line Intersect
ESRM 304 Vegetation & LOD Survey Line Intersect Sampling for Large Organic Debris
ESRM 304 Vegetation & LOD Survey Plot system layout Random Directions
Compass Scale: Azimuths & Bearings Compass directions are circular Azimuths shown here Azimuths run clockwise from N (0 - 360o)
Compass Scale: Azimuths & Bearings Compass directions are circular Bearings shown here Bearings consist of a latitudinal hemisphere (N or S) followed by 0 - 90o toward either longitudinal direction (E or W)
Compass Scale: Azimuths & Bearings As expected, can convert from azimuths to bearings and back again Bearings shown in red with azimuths in ()
The Compass: Magnetic Declination Magnetic North does NOT coincide w/ True North Declinations are constantly moving 2008: Seattle / Kenmore dec. 17o 14’ E East declinations as of 2000 C.E.
Compass Parts Always read compass here: “Fred” Screw to set declination: No further calculations needed! Needle “Red” Base arrow “Shed”
Determining a direction … (to an object, landmark, etc.) 1. Point “Fred” at object 2. Turn compass DIAL until … 4. Read direction to “Fred” 3. “Red” (needle) is in the Shed”
Following a given direction … 1. Dial in given direction 2. Turn YOURSELF until “Red” is … 4. then follow “Fred” … 3. in the “Shed” (base arrow)…
Vegetation & LOD Surveys • Field Trip to St. Edward State Park • Tue 24 May • Depart from behind Bloedel Hall (C-10 parking lot) promptly at 12:30 P.M. • Bring rain gear, sturdy footwear