Transcript Ch34
Chapter 34 The Biosphere: An Introduction to Earth's Diverse Environments PowerPoint Lectures for Biology: Concepts and Connections, Fifth Edition – Campbell, Reece, Taylor, and Simon Lectures by Chris Romero Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings 34.0 Deep-sea submersibles - reveal diversity of life beneath - giant - hydrothermal Ecology - the scientific study of the interactions of Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings 34.1 Ecologists - study how organisms Organism - individual organisms Population - group of individuals - living in a particular Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Community all the populations of inhabit a Ecosystem all the biotic and abiotic Biosphere total of all Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings 34.2 Physical and chemical factors influence Major abiotic factors: - - disturbances such as Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings 34.3 Organisms - adapted to abiotic and biotic factors by - unique adaptations that fit a particular environment allow - ex: Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Ocean currents have a profound effect on - generally modify Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings AQUATIC BIOMES 34.4 Oceans occupy most Abiotic factors influence distribution of - Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Photic zone: - illuminated regions - photosynthesis Aphotic zone: - vast, dark region Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Coral reef: - found in warm waters Estuary: - area where freshwater stream or river Wetland: - area that is transitional between Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings 34.5 Freshwater biomes - Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Rivers and streams - support communities quite different from Freshwater wetlands - - Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings TERRESTRIAL BIOMES 34.6 Terrestrial biomes - reflect regional - the distribution of biomes depends Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings 34.7 Tropical forests - cluster near - rainfall generally determines the type of - human impact is Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings 34.8 Deserts - defined by - can be - cycles of growth & reproduction - animals are adapted to Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings 34.9 Temperate grasslands - include the - found where - mostly Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings 34.10 Temperate forests - broadleaf trees - broadleaf forests need sufficient moisture to - most original North American broadleaf forests were - Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings 34.11 Coniferous forests - cone-bearing - found where there are: - short, - long, Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings