1 / 20

Ch44 and 45 species interactions

Ch44 and 45 species interactions . Symbiotic Relationships. Symbiosis- two species living together. 3 Types of symbiosis: 1. Commensalism 2. Parasitism 3. Mutualism. Symbiotic Relationships. Commensalism- one species benefits and the other is neither harmed nor helped

mac
Download Presentation

Ch44 and 45 species interactions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ch44 and 45 species interactions

  2. Symbiotic Relationships Symbiosis- two speciesliving together 3 Types of symbiosis: 1. Commensalism 2. Parasitism 3. Mutualism

  3. Symbiotic Relationships Commensalism- one species benefits and the other is neither harmed nor helped Ex. orchids on a tree Epiphytes: A plant, such as a tropical orchid or a bromeliad, that grows on another plant upon which it depends for mechanical support but not for nutrients. Also called xerophyte, air plant.

  4. Symbiotic Relationships Parasitism- one species benefits (parasite) and the other is harmed (host) • Parasite-Host relationship

  5. Symbiotic Relationships Mutualism- beneficial to both species Ex. lichen

  6. = 1 species

  7. Interspecific competition interactions in which two or more different species use the same resources • Intraspecific competition within the same species

  8. Feeding Relationships • There are 3 main types of feeding relationships 1. Producer - Consumer 2. Predator - Prey 3. Parasite - Host

  9. Feeding Relationships CONSUMERS • Primary consumers • Eat plants • Herbivores • Secondary, tertiary … consumers • Prey animals • Carnivores

  10. Trophic Levels • Each link in a food chain is known as a trophic level. • Trophic levels represent a feeding step in the transfer of energy and matter in an ecosystem.

  11. Trophic Levels Food chain- simple model that shows how matter and energy move through an ecosystem

  12. Trophic Levels Food web- shows all possible feeding relationships in a community at each trophic level • Represents a network of interconnected food chains

  13. Food chain Food web (just 1 path of energy) (all possible energy paths)

  14. Trophic Levels Biomass- the amount of organic matter comprising a group of organisms in a habitat. • As you move up a food chain, both available energy and biomass decrease. • Energy is transferred upwards but is diminished with each transfer.

  15. Energy lost • (GPP) – gross primary productivity- total amount of energy that primary producers capture and convert to chemical energy during some period of time • (NPP)- net primary productivity- energy contained in the tissue that primary producers have produced during that time and what is available for consumption

  16. Trophic Levels E N E R G Y Tertiary consumers- top carnivores Secondary consumers-small carnivores Primary consumers- Herbivores Producers- Autotrophs

More Related