how do u build a freshwater ecosystem? [u'll help if u've evr done a project last minute]?

Question

plz put sources

Answer 1

Its pretty easy to build an artificial freshwater ecosystem. All you need to do is find a pond or lake and collect a sample of water, along with algae, insects and zooplankton. The organisms are collected by dragging a very fine mesh net through the water and rinsing out all of the contents of the net into a bucket. A pair of panty hose stretched over a circular frame made from a coat hanger works perfectly. The sample will contain primary producers, bacterial and fungal decomposers, herbivores, omnivores, and predators - that's enough tropic levels to create a self-sustaining system in an aquarium. You can add a little fertilizer to get the algae blooming; adding pureed dog food will cause bacterial growth and boost the zooplankton that feed on bacteria.

Answer 2

that is the story of my life
you have to say what size

a valley (a complete catchment area ,50 square kilometers maybe)
a farm (5 square kilometers)
a garden (one,or a half acre )
a bio space (a tunnel or i got a bio space of 10meters by 5 and 2,5 meters high,with 3 cement ponds,a waterwall,exotic plants ,fish ,iguanas,some birds ,turtles and 5 baby crocodiles)

an eco system is flora and fauna ,with a natural water input ,
maybe with an artificial source to suplement ,
which includes all species nessesary to ensure the continued existance of ALL providing food for all

i have made many dams with a surounding edge ,that came very close, apart for some extra food i had to put in for preditors

this kind of question could take several books and is imposible to answer if you do not supply measurements and climatic conditions,as well as elevations and altitude

each case scenario is individual
but the base ingrediants are
extensive ground work to shape the land so that all water flows ,both natural and artificial are under control and as much water as posible can be recycled
the water must include for example polycultures of surface feeders
center water feeders and bottom feeders to ensure a healthy balance in the ponds the one specie eating the wastes of the other

plants on the edge the bottom and the surface
to provide food and shelter
ponds like inverted stepped piramids with sloping walls to maximise opertunity of the ponds surfaces and sides

animals ,plants and trees on the edges to provide fish food with their waste ,
here i will stop because i can go on for days

read up on Permaculture it has extensive explanation on design of self,sustainable autosuficient environments


Permaculture is a world recognised earth friendly movement but tends to include people that practice the concept and is active in all fields

Permaculture means permanent agriculture
a concept put forward by Bill Mollisson in the 60`s
which is a complete hand book for environmental design.

the Permaculture designers manual by Bill Mollison,which cost about 40 dollars.
and is the best all round book you can get.(tagiari publishing, [e-mail])

some other writers that are on the internet are
david Holmgren
Larry Santoyo
Kirk Hanson

Masanobu Fukuaka has written ,
One-Straw Revolution
The Road Back to Nature
The Natural Way of Farming
http://www.context.org/iclib/ic14/fukuok...
http://en.wikipedia.org/wiki/masanobu_fu...

Simon Henderson
and Bill Molisson.

a representitive of the concept in USA is
Dan Hemenway at [e-mail]
[e-mail]
http://barkingfrogspc.tripod.com/frames....
http://csf.colorado.edu/perma/ypc_catalo...

rbyderule yahoo 360, which has some stuff in English as well as this spaces
http://spaces.msn.com/byderule
and i talk quite a lot about pond design

Answer 3

The answer is, you can't. Nature ONLY can do it by itself with no help from man.