5.2+Limits+to+Growth_Density+Dependent+Factors_6th

 NATE, BURNS, and ZAC 5.2 Limits to Growth >>> >>> >>>
 * 1) Limiting Factors
 * 2) A limiting factor is a factor that causes population growth to decrease (NB)
 * 3) Also known as limiting resources ([])
 * 4) A resource base that is limited can also have long term effects on a species (SB)
 * 5) i.e. when the forests that the bamboo grows in China were cleared, the population of the pandas went way down (SB) [[image:https://www.msu.edu/course/isb/202/ebertmay/2006/images/fish_limiting.jpg width="287" height="235" align="center" caption="https://www.msu.edu/course/isb/202/ebertmay/2006/images/fish_limiting.jpg"]]
 * 1) Density-Dependent Factors
 * 2) Density-dependent factors are limiting only when the population density reaches a certain level (ZA)
 * 3) The main density-dependent factors can be compitition, predation, parasitism, and disease (SB)
 * 4) Competition:
 * 5) When a population becomes too dense there is a competition for resources between different organisms. (SB)
 * 6) This can happen between members of the same species and also other species. (SB)
 * 7) Competition is usually over food, water, space, sunlight, and other resources (NB)
 * 8) More creatures less resorces, less creatures more resources (ZA)
 * 9) Two different species competing for the same resources influences evolution (ZA) [[image:http://amandalopez.files.wordpress.com/2008/02/competition.jpg width="303" height="291" align="center" caption="http://amandalopez.files.wordpress.com/2008/02/competition.jpg"]]
 * 1) Predation   
 * 2) Predator-prey relationships are relationships between the predator and prey and is one of the best know mechanisms of population control. (NB)
 * 3) As the predator becomes more abundant the prey becomes less abundant and vise versa (SB, ZA)
 * 4) Predators may not kill their prey prior to eating them, but it will always result in death ([][[image:http://cache.eb.com/eb/image?id=95288&rendTypeId=4 width="223" height="188" align="center" caption="http://cache.eb.com/eb/image?id=95288&rendTypeId=4"]]
 * 1) **P****arasitism and Disease**
 * 2) Parasitism is a type of symbiotic relationship between two different organisms. One organism, which is the parasite, takes from the host, sometimes for a long time. Usualy, parasites are smaller than their hosts, show much skill in their way of life, and reproduce faster than there host and in greater numbers. ([])
 * 3) Parasites are a lot like predators, for they both take nourishment for their hosts making them weak and possibly caused death. (SB, NB, ZA)