Discussion 1 February 1, 2005

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Discussion 1February 1, 2005
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Bioregional Climate
D. Cassidy
Five Year Fire Regime
Long, Large
Constraints
Succession of individual plant species In a
prairie
Level of Focus
Time, Space
Micro organisms
Root Parasites
Soil Bacteria
Mechanisms (emergent)
Short, Small
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Processes Characteristics
Interior Plateau
Knobs
Outer Nashville Basin
Inner Bluegrass
Spatial Scale Temporal Scale
Landscape of Fayette County, KY
Environmental
Social
Economic
C. Read
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Speciation
Marie Vicksta
Species 2
Species 1
Determines individuals niche where it can live,
what it can ingest
Energy Budget Competition Resource
partitioning Isolation
Morphology/Physiology
Morphology/Physiology
Lethal mutations Energy cost VS. Selection value
Natural Mutation rate Introduced Toxins Increased
UV radiation Selection pressures    
Mutation
Mutation
Mutation
Mutation
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Aaron Megquier FOR565, Assignment 1 01.31.2005
Goal Develop quantifiable measures or indicators
for biodiversity that can be measured across
ecoregional landscapes.
Factors supporting biodiversity
Potential threats to biodiversity
108 ha
Rapid changes in temperature and precipitation
patterns, loss of dispersal vectors for species
migration, massive land-cover conversion by
humans
Composition Rates of speciation Structure
Physiognomy of dominant vegetation types,
geological landform, Function Temperature and
precipitation patterns, solar insolation levels
Biome
Cumulative stress from lower levels may affect
long-term viability of biome
Climate and landform shape disturbance regime,
species richness, community diversity
Composition Natural communities present, numbers
of RTE species, representativeness of protected
areas, extinction rate w/in NRV Structure
Perimeterarea ratio, patch size, riparian buffer
strips, migratory routes, landscape connectivity,
distribution of seral stages. Function
Large-scale disturbance frequency, nutrient
cycling rates, guild persistence, ecological
redundancy
Spatial Scale
Ecoregional landscape
Widespread persistent pollutants, broad patterns
of land-use change, large hydrological
modifications, loss of keystone species, fire
suppression policy, habitat fragmentation, highly
pathogenic invasive species
Biodiversity gains at stand level support the
ecoregion
Ecoregional threats are realized at the stand
level
Composition Species richness and abundance,
proportion of native species. Structure
Standing dead trees, coarse woody debris,
mixed-age stands, gap formation rates,
non-channelized streams, Function local
colonization/extinction rates, NPP
Road density, invasive species, isolation from
other patches, habitat removal/simplification,
edge effects, eutrophication of water bodies,
Individual Stand or Patch
10 ha
Temporal scale is highly non-linear across the
diagram and has been left out for this reason.
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Hierarchical Diagram
Constraints
Objective Compare insect communities between
patches
Climate Migration
Beta insect community / landscape
Patch size , Distance between patches
Insect community / patch
Floral resources pollen, nectar Insect / flower
morphology
Insect species / Flower species
Constraints Red Mechanisms Green
A. Bennett
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Objective To Determine How Black Bears are
Distributed Across the Landscape Kirsten Kapp
Forest 565
Spatial
Regional

• Regional Black Bear Range
• Defined loosely as forested land

Determined by biological and social processes
Climate, Soil type, Management History/Trends
Landscape
LANDSCAPE Forest Cover such as Spruce/Fir,
Aspen/Birch, Northern Hardwood, Wetlands,
Human Development, Agriculture
Presence in or use of a particular area (home
range) within habitat is dependent on stand
characteristics such as food quality and
quantity, escape cover, thermal cover, proximity
to homes (garbage), other bears, distance to
agriculture, edge
Stand
Ideal habitat includes a diversity of forest
types that contain hard mast, soft mast, water
sources etc
Bear Home Range
Bear Home Range
Bear Home Range
Gap
At a finer scale, presence of fallen trees (den
sites), large trees with furrowed bark (for
escape/cubs), reproductive success of individual
trees (acorn crop) determine temporal usable
habitat
Tree
Tree
Tree
Tree
Tree
Tree
Den Site
Temporal
Thermal Cover
Acorn Crop
Escape
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Objective What policy mechanisms will motivate
NIPFs (non-industrial private forest owners) to
manage across property boundaries?

• Institutions
• Policy making bodies, governments (ex. laws)
• Private organizations or cooperatives

R.Gass

• Neighbors
• Collective action
• Common objectives, trust, investment
• Ecosystem management

• Individual NIPFs
• Personal land objectives, ethics, beliefs
• Income from land, family influence