NRES 250 Forestry and Wildlife Exam Two Study Guide

Site Factors

Climate, soil, and topography affecting tree growth.

Shade Tolerance

Tree's ability to grow in low light conditions.

Natural Regeneration

Natural processes allowing trees to reproduce.

Artificial Regeneration

Human-assisted methods for tree reestablishment.

Advanced Regeneration

Young trees established before harvest occurs.

Light Compensation Point

Light level where photosynthesis equals respiration.

Soil pH

Influences nutrient availability for tree growth.

Bulk Density

Soil mass per unit volume affecting root growth.

Mycorrhizal Fungi

Fungi enhancing tree nutrient and water uptake.

Crown Classification

Categorization of tree crowns based on light access.

Even-aged Forests

Forests with trees of similar age.

Uneven-aged Forests

Forests with trees of varying ages.

Improvement Cuts

Timber Stand Improvement to enhance tree quality.

Thinning

Removing trees to reduce competition and improve growth.

Salvage Cut

Harvesting dead or damaged trees for recovery.

Density Dependent Relationships

Population growth affected by density of individuals.

Density Independent Relationships

Population growth unaffected by population density.

Additive Mortality

Total mortality increases with additional factors.

Compensatory Mortality

Total mortality remains constant despite additional factors.

Trophic State Index

Measure of lake productivity based on nutrient levels.

Eutrophic

Highly productive water bodies with abundant nutrients.

Mesotrophic

Moderately productive water bodies with balanced nutrients.

Oligotrophic

Low productivity water bodies with limited nutrients.

Mark-Recapture Techniques

Method for estimating wildlife population sizes.

Lincoln-Petersen Model

Equation for estimating population abundance: N = (M*C)/R.

Phenotypic Plasticity

Ability of an organism to change phenotype based on environment.

Natural Selection

Process where organisms better adapted survive and reproduce.

Artificial Selection

Human-directed breeding for desired traits in organisms.

Rangelands

Grasslands used for grazing livestock and wildlife.

Riparian Zones

Vegetated areas near water bodies, crucial for ecosystems.