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The Local Biome – The Atlantic Forest

The Local Biome – The Atlantic Forest. Dr. James A Danoff-Burg Columbia University. Module 2 – The Local Biome. Characteristics of the Atlantic Forest Definition of Ecology Local differences in distribution of species Orientation methods. Atlantic Forest Characteristics.

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The Local Biome – The Atlantic Forest

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  1. The Local Biome – The Atlantic Forest Dr. James A Danoff-Burg Columbia University

  2. Module 2 – The Local Biome • Characteristics of the Atlantic Forest • Definition of Ecology • Local differences in distribution of species • Orientation methods

  3. Atlantic Forest Characteristics • Tropical Moist Broadleaf Deciduous Forest • Low & simpler canopy (relative to Amazon) • High Rainfall • Seasonal fluctuation in temperatures • Presently – highly fragmented and reduced in size from past

  4. ...and now for something completely different • How would you define ecology?

  5. Definition of Ecology • Common impression • Reduce, Reuse, Recycle • Scientific definition • The factors that explain the current distribution and abundance of organisms (Krebs 1978) • A formal definition of the things that explain the range maps • Factors • Abiotic and Biotic • Abiotic remains our focus here as it was for Module 1

  6. Are Range Maps Inaccurate? • Guidebooks indicate that a species is present throughout the entire given range • Frequently, we go out and cannot find the species where the guidebook indicates • Why is this? Is it the types of factors we’ve been talking about thus far? Is there a difference in how they may impact matters?

  7. Factors Influencing Local Distribution and Abundance • Smaller-scale (as opposed to regional factors) abiotic factors • Including wind speed and direction, average rainfall patterns, temperature (avg, max, min) • Also some novel abiotic factors • Slope (aspect and angle) • Fragmentation (rates and extent) • Soil types and Bedrock type • Soil Characteristics (pH, salinity, drainage, particle size, compaction, etc.) • Rainfall runoff distribution patterns • Many others…

  8. Orientation Methods: How do I find my way back to my study site? • Marking field sites (flagging, tape, paint, landmarks, etc.) • Map and Compass • GPS and GIS • We’ll be going through all of these steps in class over the next two days

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