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Ecosystems

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Andrea Pena

on 8 April 2013

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Transcript of Ecosystems

Parasitism & Host Biotic factors : are living things,these are the most diverse and easily changeable parts of ecosystems.
Examples
• Animals
• Plants
• Microorganisms
• parasites Andrea Pena Matheus
Maria Elena Barriga Relationship between predator and prey Food Chain Abiotic factors: are the non-living factors that affect living organisms.

There are two types:
Habitats: pond, lake, ocean, desert, mountain.
Weather: temperature, cloud cover, rain, snow, wind. Ecosystems Predator and Prey Predator: an animal that lives by capturing and eating other animals. Prey: animal that falls victim to another or an animal that lives off of other animals. Examples
Predator Prey
Lion zebras
Snakes rats
Bids worms Levels of Organizations Consumers The three types of consumers are: Herbivores: animal who only eats vegetation.
-cows
- primary cosumers
Carnivores: animal who only eats meat.
-lions
-secondary,tertiary and quarternary
Omnivor: animal who eats meat and vegetables .
-rats
-secondary and tertiary . Food Web Ocean Food Web Freshwater Food Web Terrestrial Food Web If we eliminate one of the species in the food web, they will find other things to eat , then start eating each other or they die from not being able to feed themselves. A host is an organism that harbors a parasite, or a mutual or commensal symbiont, typically providing nourishment and shelter. Parasitism Parasitism is a non-mutual relationship between organisms of different species where the parasite, benefits at the expense of the host. Host Parasitism Host Tapeworms Pigs
Fleas Dogs
Barnacles Whales Relationship between parasitism and host: The parasite, lives off of another organism, the host harming the parasite lives on or in the body of the host. Examples The predator and prey evolve together. The prey is part of the predator's environment, and the predator dies if it does not get food, so it evolves whatever is necessary in order to eat the prey. The sun is the source of all energy. Parts of a food chain -
Producers: they make their own food because they are able to harness the energy of the sun, includes all green plants.
Consumers: They are every organism that eats something else. (herbivores, carnivores,parasites,scavengers).
Decomposers: Bacteria and fungi that convert dead matter into gases.(They recycle the nutrients to be used again by producers A food chain is a linear sequence of links in a food web starting from a tropic species that eats no other species in the web and ends at a tropic species that is eaten by no other species in the web. The arrows in a food chain represent the flow of energy through the web. A food web is a diagram of the links among species in an ecosystem, it is formed by several food chains connected together. The difference between a food web and food chain -
food chains follow a single path as animals eat each other
while food webs show how plants and animals are interconnected by different paths. Species
Population
Community
Ecosystem
Biomes
Biosphere Species: A group of individuals with same morphology and anatomy, and above all have the potential of breeding for producing fertile organisms of the same kind.
Population: The number of indiviuals of same species per unit area and time.
Community: Groups of different populations living together in a particular area and making various interactions among themselves.
Ecosystem: biotic community with abiotic environment at a particular place.
Biomes: bigger ecosystems of the world covering vast geographical areas with particular fauna & flora.
Biosphere: The largest unit of living systems. Conclusion Our conclusion about our presentation is that these things are very important. They happen for a reason; if there are no food webs then we all die because we have nothing to eat. Every single one of the things that we talked about in the slides before have their own thing to do, they have their purpose to exist, to maintain alive by eating other species. Andrea Pena Matheus
Maria Elena Barriga Impact on food webs
` Eagle Snake Rat Cricket Flower Killer Whale Fish Small Fish Zooplankton Phytoplankton Citation Site http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/F/FoodChains.html http://www.oc.nps.edu/webmodules/ENSO/foodweb.html http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/F/FoodChains.html http://library.thinkquest.org/11353/food.htm
http://textbookofbacteriology.net/themicrobialworld/NHPR.html
http://www.ehow.com/facts_5770668_major-source-energy-food-chains_.html#page=4
http://www.cod.edu/people/faculty/fancher/energy.htm
http://www.chiddingstone.kent.sch.uk/homework/fooodchains.htm http://en.m.wikipedia.org/wiki/Host_(biology)#section_1 http://en.wikipedia.org/wiki/Parasitism
http://science.yourdictionary.com/predator
http://www.edurite.com/kbase/examples-of-biotic-factors-in-an-ecosystem#
Full transcript