Competition in Competition in AnimalsAnimals

By: Jacy Bartnik

Competition Competition

Competition:Competition: common demand by two or more organisms for common demand by two or more organisms for environmental resources that are in short supply.environmental resources that are in short supply.

Plants: Light, water, and nutrients

Animals: food, nesting, shelters, mates

The battle for food!The battle for food!

ProblemProblem

Herbivores: compete Herbivores: compete for a food source if for a food source if there are to many there are to many herbivores and not herbivores and not enough plants then enough plants then they will starve. they will starve.

Carnivores: need to Carnivores: need to be stronger faster be stronger faster then there prey then there prey

Solution

Herbivores: specialize in eating certain plants.

Carnivores: there prey is likely to be weaker then themselves or they hunt in packs.

Type’s of Competition Type’s of Competition

Intraspecific Competition:Intraspecific Competition: This is the competition This is the competition between members of the between members of the same species. It is affected same species. It is affected by population density. It by population density. It helps to regulate the helps to regulate the population. population.

Intrespecific Competition:Intrespecific Competition: The competition between The competition between members of different members of different species in ecosystems species in ecosystems increases when the increases when the competing species have competing species have common requirements. If common requirements. If there is a presence of a there is a presence of a predator then it reduces predator then it reduces chance of intrespecific chance of intrespecific competition.competition.

Competition in AnimalsCompetition in Animals Territory:Territory: several several

mechanisms by which mechanisms by which animals control access to animals control access to critical resources. The critical resources. The males will compete for males will compete for territories by fighting or territories by fighting or performing rituals as tests performing rituals as tests of strength. of strength.

Aggression: is a form of Aggression: is a form of animal behavior that is an animal behavior that is an assault of attack on another assault of attack on another animal. In interspecific animal. In interspecific aggression two species aggression two species show forms of aggression show forms of aggression towards each other.towards each other.

Types of aggression

1)Predatory aggression

2)Defensive aggression

3)Aggression directed to competitors for resources

Competition in PlantsCompetition in Plants

In forest the taller trees In forest the taller trees receive more sun. The receive more sun. The smaller ones are shaded smaller ones are shaded from the taller trees from the taller trees therefore will never grow as therefore will never grow as tall. When a tree germinates tall. When a tree germinates in the spring it may not in the spring it may not survive because the taller survive because the taller trees shade them. trees shade them.

To avoid competition To avoid competition between the plants between the plants offspring they use animals, offspring they use animals, wind, and other ways to wind, and other ways to distribute their seeds.distribute their seeds.

Competition In Competition In SaskatchewanSaskatchewan

Red Wing Blackbird Red Wing Blackbird Agelaius phoeniceusAgelaius phoeniceus

Yellow headed Blackbird Yellow headed Blackbird Xanthocephalus xanthocephalusXanthocephalus xanthocephalus They both share nesting habitats. They both share nesting habitats. There is a Larger population of Red Wing Blackbirds which There is a Larger population of Red Wing Blackbirds which

leads to low food sources.leads to low food sources.

White Tailed Deer White Tailed Deer Odocoileus virginianusOdocoileus virginianus

Elk Elk Cervus canadensisCervus canadensis They both generally eat the same plants therefore causing one They both generally eat the same plants therefore causing one

of the species to starve or be forced out of the area.of the species to starve or be forced out of the area.