Disease and Parasitism

Drivers and Dynamics of Population

  The two types of reproduction, sexual and asexual, result in different patterns of population growth. Simple organisms like bacteria multiply and reproduce through asexual reproduction causing the population to double each time the bacteria reproduce (see figure 1), whereas mammals such as humans reproduce through sexual reproduction and consequently follow a different pattern of …

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Population Controls – Disease and Parasitism

  Disease and parasitism cause more widespread changes in ecosystems than predation. For example, in Scottish river estuary systems Hydrobia mud snails lose 1-2% of their population to predation from shorebirds, whereas parasitism kills 8-10% of the same population. In addition to this, disease and parasitism can have more indirect impacts upon population size by …

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