Sustainability : Lessons from Nature Dr, Joan Morrison Dept. of - - PowerPoint PPT Presentation

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Sustainability : Lessons from Nature Dr, Joan Morrison Dept. of Biology Environmental Science Program Trinity College Nov. 13, 2008 Sustainability Sustain or Sustainable To keep up or keep going, as an action or process To endure

SLIDE 1

Sustainability : Lessons from Nature

Dr, Joan Morrison

Dept. of Biology

Environmental Science Program Trinity College

Nov. 13, 2008

SLIDE 2

Sustainability

Sustain or Sustainable

To keep up or keep going, as an action or

process

To endure without giving way or yielding
To support, hold, or bear up

SLIDE 3

Capital is Wealth

When we invest our capital we protect the principle, live off the interest Wisely invested, our capital will grow or at least we won’t use it up

SLIDE 4

Sustainability in Nature

Nature’s Capital

SLIDE 5

How do Populations Grow?

Exponential Growth Carrying Capacity

SLIDE 6

Managing Natural Capital

Populations in nature survive on interest – you cannot eat up your principle! Wisely managed, we can retain natural capital for use by all species including

urselves

SLIDE 7

Nature works as Cycles

CO2 cycle Water cycle

SLIDE 8

Nutrient Cycling

SLIDE 9

What can we learn from Nature?

Cycles renew, careful use

ensures that capital is sustainable

Ecosystem services continue

throughout the seasons

SLIDE 10

Populations living in balance with resources can sustain indefinitely