Presentation on theme: "Species Relationships"— Presentation transcript:
1Species Relationships Feeding relationshipsAutotrophs Vs. HeterotrophsAutotrophs are things that make their own foodExamples- plantsHeterotrophs eat others** for foodExamples- monkeys & humans"I MUST BE A HETEROTROPH I CAN'T MAKE THESE !!"
2Carnivores and Scavengers Heterotrophs which eat other heterotrophsCarnivore= meat eatersExamples= lionSome animals do not kill their own food they are called scavengersThey play a beneficial role in ecosystem.Clean up dead animalsExamples= turkey vulture
4Omnivores & Decomposers Omnivores- eat bothExamples= humans & bearsFungus is an example of decomposer.Decomposers break down and absorb nutrients from dead organisms.
5DetritivoresDetritivores eat “garbage” of ecosystem – organisms that have recently dies, fallen leaves and branches, animal wastes (vulture, bacteria and fungi - decomposers)
6Relationships for survival Symbiosis“living together”Relationship in which there is a close and permanent association between organisms of a different speciesCommensalismThe predator-prey relationshipMutualismParasitism
7CommensalismOne species benefits and the other is neither helped nor harmedBarnacles on a whaleDo not harm or help whaleBarnacles benefit because constant moving water source
8Predators vs prey One organisms hunts another for food Predators- hunt for foodPrey- organism that predator eatsPredators can be the prey of larger animalsPopulation sizes are linkedIf # of prey grows or shrinks # of supported predators does the same
9Predator- Prey Hunter Lions Insect eating birds Benefit from relationshipHuntedZebraInsectsDie from relationship
10Predator & preyWhen the # of prey increases the # of predators will increase too because there is more food to support them. The changing population size of the prey species controls the population size of the predator speciesCreates a cycleThe larger the animal the larger the life cycle vs smaller animalsLive longerReproduce slower
12Mutualism A symbiotic relationship in which both species benefit Ants and acacia treeFlowers and insectsLichenExample: pollination – bees, butterflies, bats, and birds carry pollen to other plants
13Mutualism Lichens An alga and a fungus depend on each other and cannot live independently.Through photosynthesis, the alga produces the food the lichen requires, while the fungus absorbs vital nutrients and water for the lichen.
14Parasitism When one organism harms another A symbiotic relationship in which one organism derives benefit at the expense of other.ExampleParasite and host…How come parasites only harm not kill host?
15Parasite vs Host Is feed on Feeds on hostLive on body of hostDepends on host for life processesThrive in crowded areasAre a density-dependent limiting factorIs feed onLarger the host the more parasites it can supportMay become ill or die from parasite
16ParasitesSheep TickCarnivorous, feeding on the blood of various species of birds, reptiles, and mammals, including human beings.
17Summary of symbiotic relationships DescriptionHarmful vs helpfulExamplePredator & preyOne animal eats anotherOne is helped one is killedCat eating a mouseParasitismOne animals feeds off anotherOne is helped one is drained of resources or killedTick living off a deerCommensalismOne species benefits from anotherOne is helped one is not phasedBarnacles and a whaleMutualismBoth rely on each otherBoth are helpedFlower and insect
18CompetitionResults from niche overlap (use of the same limited resource by two or more species)Some animals will fight to the death for their resourcesSome plants species release toxins into the soil that prevent other species from growing nearby, restricting the space of the other species