Unit 9: Ecology Chapters 50 – 55. Chapter 50 Introduction to Ecology and the Biosphere.
An Introduction to Ecology and the Biosphere. The Scope of Ecology 1. What environmental factors...
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Transcript of An Introduction to Ecology and the Biosphere. The Scope of Ecology 1. What environmental factors...
![Page 1: An Introduction to Ecology and the Biosphere. The Scope of Ecology 1. What environmental factors determine the geographic distribution of gray whales?](https://reader036.fdocuments.in/reader036/viewer/2022083007/56649e915503460f94b96a8f/html5/thumbnails/1.jpg)
An Introduction to Ecology and the Biosphere
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The Scope of Ecology1. What environmental factors determine the
geographic distribution of gray whales?2. How do variations in their food supply
affect the size of the gray whale population?Ecology – the scientific study of the
interactions between organisms and the environment
https://www.learner.org/jnorth/images/graphics/gwhale/maps/map_annual.gif
http://video.nationalgeographic.com/video/whale_graymigration
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Hierarchy of scales that ecologists studyhttps://quizlet.com/bioteach57
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52.1 Ecology integrates all areas of biological research and informs environmental decision makingDiscovery science - describes natural
structures and processes as accurately as possible through careful observation and analysis of data
Experimental science – generate hypotheses, manipulate the environment, and observe the outcome
Ex) Fig. 52.3 – Findings? Advantages over using discovery science instead?
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Linking Ecology and Evolutionary Biology
Ecological effect vs an evolutionary effect
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Ecology and Environmental IssuesScience vs advocacyhttps://
www.neiwpcc.org/npsconference/12-presentations/Saffert_NJ%20Fertilizer%20Law.pdf
http://nj.pbslearningmedia.org/resource/envh10.sci.life.eco.silentspring/rachel-carsons-silent-spring/
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52.2 Interactions between organisms and the environment limit the distribution of speciesWhere and why do species occur where they
do?Biotic vs abiotic factorshttps://img.docstoccdn.com/thumb/orig/
129184136.pngFig 52.5
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Dispersal and DistributionThe movement of individuals away from their area
of origin or from centers of high population density.
Is dispersal a key factor in limiting the distribution of a species?
Natural range expansions vs species transplantsFig. 52.7 Dispersal of the cattle egret in the
AmericasPotential range vs actual rangehttp://animals.nationalgeographic.com/animals/
birding/european-starling/
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Behavior and Habitat SelectionMust be able to tolerate conditions in the
habitat and be able to find the resources it needs to survive
https://ipm.illinois.edu/fieldcrops/insects/european_corn_borer.pdf
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Biotic FactorsDoes the presence of other species limit
distribution?Predation, parasitism, or competitionFig. 52.8 Does feeding by sea urchins limit
seaweed distribution?
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