Essays.club - Get Free Essays and Term Papers
Search

Nutrient Cycling and Decomposition (scientific Report)

Autor:   •  February 12, 2018  •  1,478 Words (6 Pages)  •  136 Views

Page 1 of 6

...

Graphical Representation:

[pic 1] [pic 2]

Table 2. Decomposition of (specimen) Canarium ovatum (pili) Gmelina arborea (yemane) and Rottboellia cochichinensis (aguingay)

Replicate

Weight (g) of bags with the leaves

Abundance of decomposers

Initial

Week 1

Week 2

Week 3

Week 4

Week 1

Week 2

Week 3

Week 4

1. Pili

45

37.1

50.43

47.73

59.07

10

21

37

26

2. Yemane

45

33.87

41.3

38.43

42.23

5

19

33

21

3. Aguingay

45

30.4

39.67

28.47

28.3

7

35

25

25

Date performed

1/24/17

1/31/17

2/7/17

2/14/17

2/21/17

1/31/17

2/7/17

2/14/17

2/21/17

By:

Daily Decomposition Rate (DDR)

Plant Samples

Week 1

Week 2

Week 3

Week 4

Canarium ovatum

-2.75%

1.63%

0.84%

3.9%

Gmelina arborea

-4.05%

-1.23%

-2.25%

-0.91%

Rottboellia cochinchinensis

-5.77%

-1.8%

-6.54%

-6.63%

Graphical Representation:

[pic 3] [pic 4]

Specimens used[pic 5]

[pic 6] [pic 7]

[pic 8][pic 9][pic 10]

Nutrient Cycling of Specimen used

[pic 11] [pic 12] [pic 13]

[pic 14] [pic 15] [pic 16]

[pic 17] [pic 18] [pic 19]

Leaf litter decomposition of Specimen used

Week 1 [pic 20][pic 21][pic 22][pic 23][pic 24]

[pic 25]

Week 2

[pic 26] [pic 27] [pic 28]

[pic 29][pic 30][pic 31]

Week 3

[pic 32][pic 33][pic 34]

[pic 35][pic 36][pic 37]

Week 4

[pic 38] [pic 39][pic 40]

[pic 41][pic 42][pic 43]

- Discussion

In this experiment three (3) samples of different specimens were used, these are Gmelina arborea (yemane), Canarium ovatum (pili) and Rottboellia cochichinensisi (aguingay). These samples were oven-dried at 70°C for 48 hours. After, 48 hours it was then remove and observed that there is a change in color and texture. One factor that affects its coloration and texture is the temperature. Its texture is rough and brittle and its color on the other hand changes in to brown indicating that the moisture content of the samples was then removed that means it’s already dry. Calculating its rate of decomposition helps us to determine which of the samples gives decompose rapidly. Among the three samples, based on the calculations it was observed that Rottboellia cochichinensisi (aguingay) decompose rapidly because it contains the greatest amount or percentage of moisture content it also contains the lowest percentage of dry matter. Decompositions is said to be rapid when the moisture content is high the lack of water limits microbial metabolism.

The second part of the experiment was the leaf litter decomposition. Leaf decomposition was evaluated through the litter bag technique. This is a useful technique to analyse and delineate differences in decomposition rate. Net bags were used instead of any bags it is in order for the

...

Download:   txt (10.2 Kb)   pdf (59 Kb)   docx (18.4 Kb)  
Continue for 5 more pages »
Only available on Essays.club