A. Size
       1. Edge Effect
       2. Habitat size and shape
 

   B. Range of Study
       1. Local
       2. Regional
       3. Global 
 

   C. Bioenergetics
       1. Biomass
       2. Primary Productivity
 
 

II. PHYSICAL ASPECTS
 

    A. Land Use/Land Cover
        1. Ecosystem Classification
        2. Comparative Values (Similarity Values)
        3. Political Classification 
 

    B. Biotic
        1. Identification of species
        2. Biodiversity
        3. Species role in the system
        4. Geographical Comparative Studies 
 

    C. Abiotic
        1. Soil
        2. Weathering
        3. Aspect
        4. Slope
        5. Rainfall
        6. Humidity
        7. Temperature  (max. and min.)
        8. Water Chemisty
        9. Current
       10. Light

III. TEMPORAL ASPECTS 
 

    A. Land Use/Land Cover Changes
        1. Succession
        2. Habitat enhancement
        3. Habitat Creation
        4. Action Research
 

    B. Population Dynamics
        1. Size Structure
        2. Age Structure
        3. Development/Flee/Cover
        4. Migration Analysis
        5. Competition
        6. Predation