L01 Ecosystems-what are they

Ecosystems – what are they ? (Refer to Essentials of Ecology, G. Tyler Miller)

Ecosystems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Rocky Shore community – an example ,[object Object],[object Object],[object Object],[object Object],[object Object],Rocky Shore community

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Biomes – ecosystems & communities on a global scale ( Miller Ch 4 Fig 4.8) ,[object Object],[object Object],Biosphere (ecosphere) - the biosphere (i.e. all ecosystems on earth) is an additional level of organization

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Ecosystem function through ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What does biodiversity actually do ? biological diversity allows the different ecosystem functions to be carried out the primary ecosystem functions are to ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],

Miller Ch 4 Fig 4.6 Flow of energy and materials through an ecosystem Systems approach to ecosystem function

Essential characteristics of ecosystems 1. Energy flow ,[object Object],[object Object],[object Object]

Essential characteristics of ecosystems 1. Energy flow ,[object Object],[object Object]

Essential characteristics of ecosystems 2. Cycling of materials ,[object Object],[object Object]

Energy in ecosystems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sunlight - the source of energy for the biosphere Miller Ch 4 Fig 4.14

Photosynthesis ,[object Object],[object Object],[object Object],[object Object],(+ solar energy)

Productivity in ecosystems ( Refer to David T. Krohne ;Pg 358-366) ,[object Object],[object Object]

Productivity in ecosystems ,[object Object],[object Object],[object Object],[object Object]

Productivity in ecosystems ,[object Object],[object Object]

What limits primary productivity? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Which are the most productive ecosystems on Earth?

Which are the most productive ecosystems? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Productivity through time ,[object Object],[object Object],[object Object]

L01 Ecosystems-what are they

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L01 Ecosystems-what are they