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Pescadero Marsh Freshwater Ecosystem

My biology project.

Jerome Johnson

on 25 January 2013

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Transcript of Pescadero Marsh Freshwater Ecosystem

Human Interference Some harmful human interference at Pescadero
Marsh is the rusted flood gate that the national
park installed but there has been no maintinance on it and is now rusted beyond repair.These modifications created new areas for water to fill within the system and have contributed to the anoxic conditions and have changed the natural opening and closing of the sandbar. Biome Type The Pescadero Marsh in California exists as
a freshwater wetlands biome. The wetlands
are areas of standing water that support
aquatic life. This includes marshes swamps and
bogs. Plant life here must adapt to the very
moist and humid conditions. For this area to
be considered a freshwater biome it must have a low salt concentration, usually less than 1%. Abiotic Factors Some abiotic factors in Pescadero Marsh
would include a mixture of non-organic
materials. The basic abiotic components for the area include water, air, sunlight, minerals, and
rocks. Some of these factors take on a bigger role in regards to their ecosystem. Minerals haveone of the most important
roles in this ecosystem because
under the water,at the bottom of this natural
wetland, are sedimentary materials of various
kinds. Most of the materialis organic
or biotic and rises from the
decomposing remains
of living organisms. The Freshwater Ecosystem! Freshwater Pescadero Marsh
Longitude:122'24'43.71"W Biotic Factors Some biotic factors would be duck weed, which supplies food to ducks and other water fowel and milkweed, which is the main food source for many animals in this biome. Specific Organism The Crocodile
Latin Name: Crocodylus Actos Ecosystem, Habitat and Niche The crocodile lives in the freshwater wetlands
ecosystem. More specificaly, it lives in
warm quiet waters, alongside rivers lakes
and maybe even ponds. The crocodile is the top
predator of the waters that hunts at the
waters edge. Heterotrouhes vs.
Autotrouphes The crocodile is a heterotrouph therefor it eats other animals to obtain energy. Flow of Energy Crocodile Box turtle Duck Heron Pelican Small Fish Frog Dragonfly Duck Weed Reeds Algea Bacteria Diving Beetle Freshwater Snail Worms Mosquito Water Boatman Black Swan Large Fish Sunlight Flow of Energy Tertiary Consumers: Crocodile and Box Turtle.

Primary Consumers: Heron, Pelican, Duck, Black
Swan, Large Fish, Dragonfly, Frog, Diving Beetle
and some Small Fish.

Secondary Consumers: Mosquito, Water Boatman,
Freshwater Snail, and Small Fish. Producers: Algea, Duck Weed, and

Decomposers: Worms, Fungi,
and Bacteria. Biomass The mass of living biological organisms in a given area or
ecosystem at any given time. Crocodile and Box Turtle. Heron, Duck, Pelican, Black Swan, Large Fish,Dragonfly, Frog, Small
Fish, and Diving Beetle. Mosquito, Water Boatmen, Freshwater Snail, and Small Fish. Algea, Duck Weed, and Reeds. Biomass Pyramid Limitations to the
Amount of Life Every Ecosystem has a limit to the amount of life possible in
an area. Energy is transfered when another organism has been eaten by another. But the energy is only transfered by 10% when it is moving from primary, to secondary, and to tertiary.Producers get all of their energy from the sun and nutrients from the soil. So when a Primary consumer eats the producer then they are getting 100% of the energy stored in that plant life. Then when the secondary consumer eats a primary then they get 10%. But when a Tertiary consumer eats a secondary it recieves only 1% of the total energy stored. So in this case, for an ecosystem to sustain itself, the total mass of carnivores in an ecosystem must be less than the the total mass of the producers. Symbiotic Relationship: Mutualism
and Commensalism A form of mutualism in this environment
would be between the hydra species and
endosymbiotic green algea. The algea gets the
products of photosynthesis and has better growth performance. A form of commensalism in this wetland environment would be midges that live inside cool algae in streams called Nostoc, and there are protozoans that live on chironomids, which are mayfly larvae that benefit from their hosts, but have no effects shown on their hosts. Symbiotic Relationships: Compotition An example of comptition in this wetland environment is between the pelica and the heron who both compete for food like large fish and frogs. Symbiotic Relationships:
Parasitism Parasitism occures in the freshwater wetland as well. For example, there are tons of fish and snail parasites that include protozoans, leeches, nematoads, trematodes, cestodes, and myxozoans. Leeches portray parasitism because it attaches itself to another animal and sucks its blood. Works Cited 1) . The American Crocodile. N.p., 07 03 2006. Web. 11 Jan 2013. <http://drake.marin.k12.ca.us/academics/seadisc/endangeredspecies/2005 & 2006/American Crocodile Site/Home.htm>.

2)"Wetlands." Gambier, Ohio 43022 : 2006. <http://microbewiki.kenyon.edu/index.php/Wetlands>.

3)Mistretta, Adam, ed. "pbworks.com." Biotic Factors-Wetland. PBWORKS, 02 01 2011. Web. 11 Jan 2013. <http://grmsbiomes.pbworks.com/w/page/23239930/Biotic Factors - Wetland>.

4)Miller, Donald. "ehow.com." Abiotic Factors in Natural Wetlands. eHOW, n.d. Web. 11 Jan 2013. <http://www.ehow.com/info_8506185_abiotic-factors-natural-wetlands.html>.

5). "thewildclassroom.com." Freshwater Biomes. Explore Biodiversity and The Wild Classroom. Web. 11 Jan 2013. <http://www.thewildclassroom.com/biomes/FRESHWATER.html>. Current Environment Concern The native fish at Pescadero Marsh are dying off at an alarming rate. If you wish to know more and give possible aid go to the link below.

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