ridm@nrct.go.th   ระบบคลังข้อมูลงานวิจัยไทย   รายการโปรดที่คุณเลือกไว้

Dynamics of transparent exopolymeric particles (TEP) and particle-associated carbohydrates in the Dona Paula bay, west coast of India

หน่วยงาน National Institute Of Oceanography (NIO), India

รายละเอียด

ชื่อเรื่อง : Dynamics of transparent exopolymeric particles (TEP) and particle-associated carbohydrates in the Dona Paula bay, west coast of India
นักวิจัย : Bhaskar, P.V. , Bhosle, N.B.
คำค้น : TEP , carbohydrates , bacteria , dynamics
หน่วยงาน : National Institute Of Oceanography (NIO), India
ผู้ร่วมงาน : -
ปีพิมพ์ : 2549
อ้างอิง : Journal of Earth System Science, vol.115(4), 403-413p. , http://drs.nio.org/drs/handle/2264/99
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Surface seawater samples were collected over a period 33 of 27 months at a shallow water station in Dona Paula bay from 1998-2000. The samples were analyzed to assess the seasonal variations, inter-annual variability and the contributions of i) transparent exopolymeric particles (TEP) concentration, ii) two forms of particle-associated carbohydrates- 1.5M NaCl/saline extracted (Sal-PCHO) and 10mM EDTA-extracted (CPCHO) and iii) total bacterial abundance (TBA) to particulate organic carbon pool. A distinct inter-annual variability was observed with an increase in the bacterial abundance, chlorophyll a (chl a), TEP and Sal-PCHO and their greater contribution to particulate organic carbon during May 1998-1999 than in June 1999- July 2000. Overall, there was no statistically significant correlation of TEP with phytoplankton biomass (Chl a), Sal-PCHO, CPCHO and hydrodynamic conditions. A weak inverse correlation was observed between TEP and TBA (r= -0.397; p<0.05) but the role of TEP as a C-source for bacteria was not evident. Both Sal-PCHO and CPCHO appeared to be two distinct forms of carbohydrates. Unlike CPCHO, Sal-PCHO concentrations showed a positive trend with chl a and significant linear correlation with bacterial abundance (r= 0.44, p< 0.007, n= 48), indicating that Sal-PCHO as carbon source might have supported bacterioplankton abundance. The mean %TEP-C contribution to the annual average organic carbon for 1998-2000 was 6.9% ± 5.8% and next only to phytoplankton-C (33.1 ± 22.1%) and greater than bacterial-C (4.6% ± 4.6%) or carbohydrate-C (< 3.8 %). Despite its greater contribution to the organic carbon pool, the contribution of TEP-C to the benthic carbon demand and its fate in the study area could not be ascertained in this study.

CSIR for fellowship

บรรณานุกรม :
Bhaskar, P.V. , Bhosle, N.B. . (2549). Dynamics of transparent exopolymeric particles (TEP) and particle-associated carbohydrates in the Dona Paula bay, west coast of India.
    : National Institute Of Oceanography (NIO), India.
Bhaskar, P.V. , Bhosle, N.B. . 2549. "Dynamics of transparent exopolymeric particles (TEP) and particle-associated carbohydrates in the Dona Paula bay, west coast of India".
    : National Institute Of Oceanography (NIO), India.
Bhaskar, P.V. , Bhosle, N.B. . "Dynamics of transparent exopolymeric particles (TEP) and particle-associated carbohydrates in the Dona Paula bay, west coast of India."
    : National Institute Of Oceanography (NIO), India, 2549. Print.
Bhaskar, P.V. , Bhosle, N.B. . Dynamics of transparent exopolymeric particles (TEP) and particle-associated carbohydrates in the Dona Paula bay, west coast of India. : National Institute Of Oceanography (NIO), India; 2549.