It takes the average reader and 22 minutes to read Estimating the Abundance of Arboreal Forage Lichens by H. M. Armleder
Assuming a reading speed of 250 words per minute. Learn more
In British Columbia caribou spend much of the year in high elevation forests and during winter feed almost exclusively on arboreal lichen (lichen growing on trees). Increasingly, timber harvesting has advanced into caribou habitat. The impact of this harvesting can be substantial, since the removal of trees means the removal of lichen; clearcutting eliminates all arboreal lichen within a cutblock. Because lichen spreads and grows slowly, a century or two may pass before a clearcut will again supply lichen for caribou. This handbook describes a method to gather lichen abundance information for forest and wildlife managers. It will help users estimate: proportions of the two main types of forage lichen, and overall abundance of the forage lichen. The first part of the handbook introduces the two types of lichen. Photos showing various mixes of the two types are provided for users who need to estimate percentages. The second, and major part, of the handbook is a guide to rating overall lichen abundance. It includes two sets of photo series, showing boundaries between lichen classes: one illustrates individual trees with different amounts of lichen, and another shows the same photos, but arranged to facilitate comparison between different trees. The final part of the handbook provides more information on the zone within a tree in which to estimate lichen abundance and explains how the classes relate to actual lichen biomass. It also includes suggestions for further reading.
Estimating the Abundance of Arboreal Forage Lichens by H. M. Armleder is 22 pages long, and a total of 5,544 words.
This makes it 7% the length of the average book. It also has 7% more words than the average book.
The average oral reading speed is 183 words per minute. This means it takes and 30 minutes to read Estimating the Abundance of Arboreal Forage Lichens aloud.
Estimating the Abundance of Arboreal Forage Lichens is suitable for students ages 8 and up.
Note that there may be other factors that effect this rating besides length that are not factored in on this page. This may include things like complex language or sensitive topics not suitable for students of certain ages.
When deciding what to show young students always use your best judgement and consult a professional.
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