OBJECTIVE: Identify Different Interactions among speciesInteractions

An Ecosystem is made of BIOTIC and ABIOTIC parts BIOTIC components are the living parts of the ecosystem Examples are: Plants Animals Fungi Bacteria

An Ecosystem is made of BIOTIC and ABIOTIC Components ABIOTIC components are the NON-living parts of the ecosystem Examples are: Water Air Temperature Sunlight

 The ecosystem in which an organism lives.

 Full range of physical and biological conditions in which an organism lives and the way the organism uses those conditions.

 A Niche Includes:  Food: What it eats and how it’s obtained, where is it on the food web? What eats it?  Abiotic Conditions: Non-living things needed to survive (sun, temperature, water, salt water, fresh water, heat, protection, etc.)  Behavior: When and how it reproduces, mating rituals, hibernation, defense mechanisms, interactions with others

 How is a niche different from a habitat? VSVS

 Competition: When organisms attempt to use an ecological resource at the same time in the same place.

 NO TWO SPECIES CAN HAVE THE SAME NICHE AT THE SAME TIME

 Predation: When one organism captures and eats another organism.

 SYMBIOSIS is the interaction between 2 different organisms living together  HOST- usually the LARGER of the 2 organisms  SYMBIONT- usually the SMALLER member

 Is a relationship where both species benefit  For example, the the bee feeding on the nectar helps to pollinate other flowers

 Is a relationship between the host and symbiont, where the symbiont benefits and the host is neither helped nor harmed.  The symbiont benefits by receiving transportation, housing, and/or nutrition.  For example, barnacles receive transportation from the host whale. The host whale is neither helped nor harmed by the barnacles.

 Is a relationship where the Symbiont lives in/on the Host  The Symbiont (or Parasite) BENEFITS  The Host is HARMED  For example, the tick in the picture above is a parasite. It benefits by extracting blood from its human host. The human is harmed because

 Write the partner, what happens in the relationship, and then identify the relationship as  Parasitism,  Mutualism, or  Commensalism

Oxpeckers eat ticks on the rhinoceros’s back. This is an example of:MUTUALISM

Stork cuts up dead animals that it eats with its beak. Bees lay eggs on the carcasses that provide food for the eggs. This is an example of:COMMENSALISM

Feed next to each other and warn each other when predators come. This is an example of:MUTUALISM

Cowbird follows the bison and eats the insects in the grass. This is an example of:COMMENSALISM

Live on deer and suck their blood. This is an example of:PARASITISM

Wrasse fish eats parasites on black sea bass. This is an example of:MUTUALISM

Attaches to shark and eats scraps from the shark’s meal. This is an example of:COMMENSALISM

Mistletoe grows on spruce trees and uses its water and nutrients. This is an example of:PARASITISM

Yucca moth pollinates yucca plant and lays its eggs on the flower. This is an example of:MUTUALISM

The cuckoo lays its egg in the Warbler’s nest and forces warblers to raise chick This is an example of:PARASITISM

. Bird shows badger where beehive is; badger breaks open hive and both eat honey This is an example of:MUTUALISM

Clownfish feeds on animals which could harm the sea anemone, and the sea anemone gets nutrients from clown fish waste. This is an example of:MUTUALISM