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Introduction

SETTING UP AN ECOSYSTEM COL�GIO PLANALTO MIGUEL PE�ALTA N� 1700 GROUP III LISBON 11/2005 INDEX bACKGROUND 2 dATA cOLLECTION 3 Animalia Description 10 Pterophyllum Angel Fish 10 Paracheirodan innesi (neon) 10 Poecilia Reticulata 11 Algae Eater 12 El�dea 13 Ludwigia repens 14 Microsorum pteropus 15 eVALUATION 16 BIBLIOGRAPHY 17 BACKGROUND DATA COLLECTION When analysing an ecosystem we have two parts that are 1st part: describing an ecosystem. 2ndpart: System approach. This part it won't be done, because we still are not as familiarised as we should be with the ecosystem. 1st part: describing an ecosystem. A. Abiotic features that are: a. Climatic factors: i. Water pH, ii. Temperature; iii. turbidity, iv. water hardness; v. light intensity, vi. photoperiod, vii. Nitrogen components (NH3,NO2-, NO3-)(0-0,20), viii. turbulence, ix. [O2];[CO2] ([]means concentration.) b. Edaphic factors: i. Soil (silica gravel), ii. Rocks 3, woods 3, ceramics 3(vase). c. Aquarium: i. size(volume) 112096centimetres3 more or less 112 litres. ii. shape :rectangular d. Equipment: filter: biological, physical and chemical filtration. i. Filter Carmster 230v/50Hz/8 Watt ii. A fluorescent lamp with 70 cm with 230v-50hz For each of these parameters consider: 1. What it measure? i. pH:7.4/7.6 water acidity less than this is alkaline ii. T�:24�C the heat that water needs to be for the survival of the Animalia. iii. Turbidity: it's not turbid the view and visibility inside the aquarium. iv. Water hardness: moderate (15drops) v. Light intensity230v-50Hz vi. Photoperiod: 10h/16h vii. Nitrogen compounds(ammonia): 0-0.20 viii. Turbulence there is the flow that comes from the filter ix. ...read more.

Middle

Decomposers as the name says "decompose" things into nutrients or nothing, this can be good because it fertilizes the soil and give nutrients to the water. Bacteria make the hard work because some of them sustain the Ecosystem equilibrium and other try to make the opposite which will be causing a disease; also if decomposers don't make their job bodies will stay so they'll make the water have more nutrients. This can be good in short period; in a long period if they keep there the water will be so overnutried that fish will start dying. That's why the roles of these tiny little friends just as the bacteria are essential for life Biotic factors Description animalia N� Name(animalia) Male/female number 1 Pteraflyllum Scalare(escalar) ? 4 HYPHESSOBRYCON INNESI (NEON) N�on - ? 3 Poeclia Reticulate(guppies) 2 male/ 1 female 2 Gpriniacheilus aymomeri (Algae eaters) ? ? Snails N� Name (plants) 1 Elodea (Egeria densa) 1 Lugwigia Repens 1 Feto java (Microgorum pterfus) 1 Aracena ANIMALIA DESCRIPTION PTEROPHYLLUM ANGEL FISH Freshwater angelfish are cichlids that originate around the Amazon River basin with a striking, compressed body shape and long extended dorsal and anal fins. The fish are often taller than they are long. There are three recognized species, all belonging to the genus Pterophyllum. For aquarium breeding, the angelfish is a bad parent compared to many other cichlids, and quite often eats its young. ...read more.

Conclusion

In the limited confines of a small tank, it may terrorise other aquarium inhabitants. In addition, they often become less inclined to eat algae as they grow, particularly if other food sources are available. EL�DEA Common name: Scientifical name (Egeria densa) Foto: www.liveaquaria.com j origin Central and South America high: 90 cm. growth: fast. T� 20 - 25 � C PH: 5 - 10 Light needs: medium. LUDWIGIA REPENS Family Onagraceae Continent North America Region North America Country of origin Height 30-50 cm Width 5-8 cm Light requirements medium-very high Temperature 15-26 �C Hardness tolerance very soft-hard pH tolerance 5,5-8 Growth fast Demands easy Ludwigia repens is a familiar and very beautiful aquarium plant. It generally makes few demands and grows fast, but the red colour is more intense if the light is good. When pruned it develops countless side shoots and becomes more bushy. Suitable as an intermediate or background plant, and most effective when planted in groups MICROSORUM PTEROPUS No. 008 Family Polypodiaceae Continent Asia Region Country of origin Height 15-30 cm Width 12-20+ cm Light requirements very low-high Temperature 18-30 �C Hardness tolerance very soft-hard pH tolerance 5-8 Growth slow Demands very easy Microsorum pteropus is a water fern which should be grown on a root or stone, attached with fishing line until it has gained a hold. If it is planted in the bottom, do not cover the rhizome because it will rot. Easy to propagate by splitting the horizontal rhizome. A hardy plant which grows in all conditions. The black spots under the leaves are sporangia (reproductive organs), not signs of disease as many believe. ...read more.

This student written piece of work is one of many that can be found in our GCSE Green Plants as Organisms section.