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Published byΝανα Γούναρης Modified over 5 years ago
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CHAPTER 50 AN INTRODUCTION TO ECOLOGY AND THE BIOSPERE
Or…”The blue, the green, and everything in between.”
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“Earth-set”
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The scope of ecology What is ecology?
Ecology studies the distribution and abundance of organisms and their interactions with the environment.
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What affects organisms?
Abiotic Factors Biotic Factors Organisms are affected by and affect both the abiotic and biotic components of their environment.
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Evolution and Ecology are closely linked.
Including how organisms respond and how they are distributed Events occurring in ecological time (minutes, months, years) translate into effects over the longer scale of evolutionary time (decades, centuries, millennia, and longer).
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Definitions Organismal ecology Population Population ecology Community
Community ecology Ecosystem Ecosystem ecology Landscape ecology A landscape or seascape
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Rachel Carson Precautionary principal Look before you leap
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Species Distribution Limiting factor—Dispersal
Increased by human transplantation
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Climagraph and distribution
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Aquatic Biomes Marine Freshwater Wetlands Estuaries Intertidal
Coral Reefs Pelagic Benthos Freshwater Wetlands Estuaries
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Water Cycling
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Most species have small geographic ranges
Only a small minority of species are widespread.
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