|
Abstract
|
Article Information:
Nitrification Potential Rate of Different Sediment Types of the Ariake Sea Tidal Flat in Summer and Autumn
Alim Isnansetyo, Masahiro Seguchi and Masumi Koriyama
Corresponding Author: Alim Isnansetyo
Submitted: 2011 June, 01
Accepted: 2011 July, 18
Published: 2011 November, 10 |
Abstract:
|
The purpose of this research was to investigate the nitrification potential in different sediment types
in the Ariake Sea tidal flat. The Ariake Sea, a semi-closed shallow sea with macro-tidal and a large tidal flat,
is located in the west part of Kyushu Island, Japan. Different kinds of sediment develop in the different parts
of its tidal flat. We analyzed and classified the sediment textures, physico-chemical properties of sediment pore
water, Ammonium-Oxidizing Bacteria (AOB) density, and determined their Nitrification Potential Rate (NPR).
The sediment textures from intertidal zone were classified to be silty clay loam, sandy loam and loamy sand,
and sediment from a sub-tidal zone to be sandy loam for 6 cm upper most sediment, and loamy sand for 6-9
cm sediment depth. The highest NPR was found in silty clay loam sediment (12.072-59.102 nmol N/g Dry
Weight Sediment (DWS)/h) followed by sandy loam (7.29-21.056 nmol N/g DWS/ h), and the other sediment
textures. The high AOB densities, 2.278×103-7.171×104 and 1.429×103-7.171×104 cells/g sediment, were also
found in silty clay loam sediment and sandy loam sediment, respectively. Correlations between pore water NH4-
N concentration and NPR were found at sediment depths of 3-6 cm (r = 0.381; α = 0.05) and 6-9 cm (r = 0.786;
α = 0.05). In these depths, the correlation also exhibited for AOB density and NPR (r = 0.595, α = 0.05 for 3-6
cm and r = 0.679, α = 0.05 for 6-9 cm depths). However, these two correlations was not approved for 3 cm
upper most sediment. It is the first report on nitrification potential in the different kinds of sediment of the
Ariake Sea which improve our understanding of the nitrification in this area.
Key words: Ammonium oxidizing bacteria, nitrification, sediment, texture, The Ariake Sea, tidal flat,
|
|
Abstract
|
PDF
|
HTML |
|
Cite this Reference:
Alim Isnansetyo, Masahiro Seguchi and Masumi Koriyama, . Nitrification Potential Rate of Different Sediment Types of the Ariake Sea Tidal Flat in Summer and Autumn. Research Journal of Environmental and Earth Sciences, (6): 704-716.
|
|
|
|
 |
ISSN (Online): 2041-0492
ISSN (Print): 2041-0484 |
 |
| Information |
|
|
|
|
| Sales & Services |
|
|
|
|
