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RPF Exam April 2023-Questions and Answers (Latest Update 2024)
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RPF Exam April 2023-Questions andAnswers (Latest Update 2024)
What are the benefits and disadvantages to 3P sampling? - Correct Answer
✅- Benefit: designed for situations in which a highly precise estimate of
volume or value is required.
-Disadvantage: not a replacement for operational cruises.
-Disadvantage: it cannot be used to estimate biomass as it will not predict
volumes of limbs.
how do you use a Biltmore stick to get diameter, height, and volume for a
tree? - Correct Answer ✅-by holding it at right angles to the axis of the
stem at breast height and 25" from your eye. Comparing the graduations cut
by lines of sight tangential to either edge of the stem gives you diameter.
-Total tree height or merchantable height can be determined by standing 100
feet from the tree at the same contour on the slope, holding stick 25" from
your eye.
-volume is determined by looking at the back of the stick and using the table
to get board feet.
What are the three steps to 3P sampling? - Correct Answer ✅1. Selection:
A rule (3P) for selecting sample trees.
2. Measurement. A method for observing the variables of interest on sample
trees selected.
3. Computation. Use of a computer program to transform the sample
observations to estimates for the whole forest.
Explain how 3P sampling is performed in the field and what corrected 3P
sampling is? - Correct Answer ✅An efficient method of cruising where the
cruiser estimates height, dbh, or another characteristic, then a following
cruiser takes the actual measurements of a random sample of those trees to
compare to the estimated values. The estimated cruise is then adjusted by
the difference between the estimate and the true value. This is known as a
"corrected 3P cruise".
,RPF Exam April 2023-Questions and
Answers (Latest Update 2024)
List four (4) general abiotic characteristics used to describe a forest stand. -
Correct Answer ✅1. Soil Type
2. Elevation
3. Aspect
4. % precipitation or moisture
The abiotic parts of an ecosystem can generally be defined as: - Correct
Answer ✅Pertaining to the non-living parts of an ecosystem, such as soil
particles, bed rock, air, and water.
Where does advection fog occur? - Correct Answer ✅-This type of fog is
common along coastal regions and can also form over large bodies of water,
such as lakes or the open ocean.
-It can also form over land when a warmer air mass moves over a colder
surface, such as snow-covered ground or a cold river.
Explain how advection fog forms in California and it's influence on Redwoods:
- Correct Answer ✅When moist air and water vapor moves in from the
Pacific Ocean onto the cold ground of the coast. This warm, moist air is
brought towards the coast by what is called the California Current. The
current can carry water that, on average, will reach temperatures as high as
79 degrees Fahrenheit. This warmer water occurs in the spring and summer,
causing these times of year to bring more fog throughout the North and
Central Coast. Fog has a relatively large impact on the Redwood forests in
CA, providing almost half of their moisture in some seasons throughout the
year.
How is Annosus Root Rot (Heterobasidion annosum) spread? - Correct
Answer ✅-Fungus spreads from tree to tree by root contact
-Fungus is also spread through wind-blown spores.
-The disease tends to occur in patches of trees that enlarge progressively
with infection centers often beginning in freshly cut stumps.
,RPF Exam April 2023-Questions and
Answers (Latest Update 2024)
How and when does White pine blister rust spread? What are its alternate
hosts? - Correct Answer ✅-In WPBR, when the blisters rupture they release
bright orange colored aeciospores which infect the alternate host (most
commonly gooseberry or currant plants).
-While hosted on these other plants the rust produces basidiospores that are
released in the fall and can infect the pines.
-The rust is shed from the gooseberry or current plant when the plant
naturally drops its leaves in the autumn.
What are examples of allochthonous input? What does it normally refer to? -
Correct Answer ✅Examples of allochthonous inputs include precipitation,
runoff, sediment, rocks, organisms, organic matter, and nutrients originating
outside and transported into a system.
The term usually refers to organic material of terrestrial origin transported
into streams and lakes but can include material deposited by wind and
carried by animals.
What is Autochthonous input? - Correct Answer ✅Are internal sources of
nutrients or energy.
A stream that derives most or all of its nutrient energy source from such
things as terrestrial insect drop and litter-fall from terrestrial vegetation is
described as an: - Correct Answer ✅Allochthonous stream
A stream that derives most or all of its nutrient energy source from such
things as terrestrial insect drop and litter-fall from terrestrial vegetation is
described as an _____ type of stream? - Correct Answer ✅Allochthonous
, RPF Exam April 2023-Questions and
Answers (Latest Update 2024)
What does the Air Quality Management District administer? Who is this their
primary partner and what do they ensure? - Correct Answer ✅-The districts
administer air quality improvement grant programs
-They are California Air Resources Board's (CARB's) primary partners in
efforts to ensure that all Californians breathe clean air.
What are four (4) things that are included in the Basin Plan? - Correct
Answer ✅(i) designates beneficial uses for surface and ground waters.
(ii) sets narrative and numerical objectives that must be attained or
maintained to protect the designated beneficial uses and conform to the
state's antidegradation policy.
(iii) describes implementation programs to protect all waters in the Region.
(iv) incorporates (by reference) all applicable State and Regional Board plans
and policies and other pertinent water quality policies and regulations.
Why is the Basin Plan important to forestry and it has the authority to require
what? - Correct Answer ✅-In forestry it relates to, the waivers of waste
discharge requirements on timber harvest plans.
-AND is the authority to require monitoring and reporting.
What is the Clean Air Act? - Correct Answer ✅The Clean Air Act (CAA) is
the United States' primary federal air quality law, intended to reduce and
control air pollution nationwide. Initially enacted in 1963 and amended many
times since, it is one of the United States' first and most influential modern
environmental laws. Administered by the U.S. Environmental Protection
Agency (EPA), in coordination with local, tribal, and state governments.
A vision for a natural environment that is more fire resilient; buildings and
infrastructure that are more fire resistant; and a society that is more aware
of and responsive to the benefits and threats of wildland fire; all achieved
through local, state, federal, tribal, and private partnerships. Refers to what?
- Correct Answer ✅California 2018 Strategic Fire Plan
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