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Northern Journal of Applied Forestry Online Quiz
Derived from the 2012 June Northern Journal of Applied Forestry
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The Northern Journal of Applied Forestry Quiz is approved for 3.5 continuing forestry education (CFE) credit hour in Category 1-CF by the Society of American Foresters. Successful completion of the self-assessment, defined as a cumulative score of at least 70%, is required to earn CFE credit. CFE approval is valid for one year from the issue date of publication, and participants may submit the quiz at any time during that period.

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1. Which of the following was an objective of the Turcotte et al. study of the effects of ice storm damage in the Wayne National Forest?
a) To correlate the degree of ice damage, with tree genus, size and growth, dieback, epicormic branching and mortality
b) To determine species specific relationships of ice damage with previously existing injury from insect defoliation and diseases
c) To examine the six year trends in tree recovery by modeling species-specific diameter growth rates
2. In a 6-year study of ice storm damage in southern Ohio, Turcotte et al. determined that heavily damaged trees had what chance of survival?
a) > 60%
b) 30%
c) < 15%
3. In the study examining site preparation techniques for securing natural red pine regeneration by D'Amato et al., which understory species were indicative of sites receiving underburning treatments?
a) Violet species and lady fern
b) Canada mayflower and bindweed
c) Bush honeysuckle and bracken fern
4. All of the site preparation treatments applied in the D'Amato et al. study resulted in regeneration densities that met or exceeded minimum stocking levels for naturally regenerated red pine within the upper Great Lakes region of:
a) 100-490 tph.
b) 1000-4900 tph.
c) 10,000-49,000 tph.
5. In their article, Anderson et al. found that over the last two decades the observed trends in parcelization and development of family forests in the New York City watershed have been accompanied by:
a) dramatic net loss of forest cover due to land clearing activities.
b) regrowth of forest on land formerly used for agriculture.
c) a decline in the implementation of best management practices in farm and forestry operations.
6. According to Caron et al., a high percentage of landowners in the New York City watershed are absentee owners. What percentage of the landowners represented in this study are full-time residents?
a) 24%
b) 35%
c) 41%
7. Morris and Longpre used survival analysis in their study of succession in jack pine. Survival analysis is:
a) a non-parametric, multivariate approach analogous to multiple linear regression, but largely using categorical (multi-state) variables in its prediction models.
b) a predictive model that derives specific rates of change in species composition providing forest managers with a tool that predicts both "when" stand composition changes, and "what" it changes into.
c) a non-parametric, multivariate technique that derives probabilities though time that a given stand will cross an event threshold.
8. According to the Morris and Longpre study, of the environmental variables used to determine shifts in species composition in jack pine-dominated stands, low amounts of precipitation during the growing season resulted in:
a) a high rate of jack pine persistence in the observed stands.
b) a low rate of jack pine persistence compared to sites receiving high amounts of precipitation during the growing season.
c) no significant changes in jack pine persistence, as growing season precipitation was not a significant factor in the final survival function
9. The Burk article states that composite tree volume tables are based on the premise that:
a) tree species in a given geographical region tend to be of very similar form.
b) past and present stand conditions are a bigger determinant of tree form than is species.
c) tree dbh and total height together satisfactorily explain tree-to-tree variation in form.
10. In 3P (probability proportional to prediction) sampling, estimator precision requires the predictions be:
a) unbiased.
b) accurate.
c) consistent.