1 / 11

Exploring Ecology: Interactions in the Biosphere

Delve into the geographic distribution of gray whales, factors influencing their population size, and the interplay of biotic and abiotic factors in species distribution. Learn how ecology integrates biological research and influences environmental decision-making, linking ecology and evolutionary biology. Understand the impact of interactions between organisms and their environment on habitat selection, species distribution, and ecological balance.

brocha
Download Presentation

Exploring Ecology: Interactions in the Biosphere

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 52 An Introduction to Ecology and the Biosphere

  2. The Scope of Ecology • 1. 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

  3. Hierarchy of scales that ecologists study • https://quizlet.com/bioteach57

  4. 52.1 Ecology integrates all areas of biological research and informs environmental decision making • Discovery 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?

  5. Linking Ecology and Evolutionary Biology Ecological effect vs an evolutionary effect

  6. Ecology and Environmental Issues • Science vs advocacy • https://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/

  7. 52.2 Interactions between organisms and the environment limit the distribution of species • Where and why do species occur where they do? • Biotic vs abiotic factors • https://img.docstoccdn.com/thumb/orig/129184136.png • Fig 52.5

  8. Dispersal and Distribution • The 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 transplants • Fig. 52.7 Dispersal of the cattle egret in the Americas • Potential range vs actual range • http://animals.nationalgeographic.com/animals/birding/european-starling/

  9. Behavior and Habitat Selection • Must 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

  10. Biotic Factors • Does the presence of other species limit distribution? • Predation, parasitism, or competition • Fig. 52.8 Does feeding by sea urchins limit seaweed distribution?

More Related