Today: What happens near the carrying capacity? What is biodiversity? Bonuses due W 4/22

Ecological Interconnections

Fig 52.7 Carrying Capacity stationary phase exponential growth

Carrying capacity is limited by the availability of resources and removal of waste. Space

fewer consumers than producers =0.0008% =50% =12%

Energy is lost in each consumer Fig 54.7 Energy is lost in each consumer 1000

Fig 54.14 Carbon cycle

Nitrogen cycle 80% in air Fig 54.16

Nitrogen as part of amino acids and nucleotides Fig 3.2+4.1 Nitrogen as part of amino acids and nucleotides N N N

Nitrogen cycle 80% in air Fig 54.16

Biodiversity- number of species within an area CB 55.2 Genetic Diversity Biodiversity- number of species within an area Ecosystem Diversity

Ecosystems on Earth: resources are not evenly distributed Fig 50.9 Ecosystems on Earth: resources are not evenly distributed

Ecosystems on Earth: resources are not evenly distributed Fig 54.2 Ecosystems on Earth: resources are not evenly distributed

Number of bird species: Areas of higher and lower biodiversity reflect available resources

Larger areas can support more biodiversity Fig 53.24b Islands

Larger areas can support more biodiversity # bird species

Water is critical for biodiversity

Removing resources reduces biodiversity 1/10th 1/100th Australian tree hole communities (leaf litter supports bugs etc)

New predators can have an affect throughout the ecosystem

Areas with increasing plant biodiversity were less affected by drought. Fig 55.15

What happens as populations approach their carrying capacity? Fig 52.7

What happens as populations approach their carrying capacity? Fig 52.7

What happens as populations approach their carrying capacity? Fig 52.7

What happens as populations approach their carrying capacity?

36.4 9 2.3 Fig 52.17 UN Department of Economic and Social Affairs Population Division (2004)

How much of our society is based on continuing population increases? 36.4 9 2.3 UN Department of Economic and Social Affairs Population Division (2004)

Why are species going extinct? Fig 55.6

Today: What happens near the carrying capacity? What is biodiversity? Bonuses due W 4/22