Inter-annual and seasonal variations in hydrological parameters and its implications on chlorophyll a distribution along the southwest coast of Bay of Bengal

Shanthi R.; Poornima D.; Raja K.; Sarangi R. K.; Saravanakumar A.; Thangaradjou T.

doi:10.1007/s13131-015-0689-5

Article Contents

Article Navigation > Acta Oceanologica Sinica > 2015 > 34(6): 94-100

Shanthi R., Poornima D., Raja K., Sarangi R. K., Saravanakumar A., Thangaradjou T.. Inter-annual and seasonal variations in hydrological parameters and its implications on chlorophyll a distribution along the southwest coast of Bay of Bengal[J]. Acta Oceanologica Sinica, 2015, 34(6): 94-100. doi: 10.1007/s13131-015-0689-5

Citation:

Shanthi R., Poornima D., Raja K., Sarangi R. K., Saravanakumar A., Thangaradjou T.. Inter-annual and seasonal variations in hydrological parameters and its implications on chlorophyll a distribution along the southwest coast of Bay of Bengal[J]. Acta Oceanologica Sinica, 2015, 34(6): 94-100. doi: 10.1007/s13131-015-0689-5

Citation:

Shanthi R., Poornima D., Raja K., Sarangi R. K., Saravanakumar A., Thangaradjou T.. Inter-annual and seasonal variations in hydrological parameters and its implications on chlorophyll a distribution along the southwest coast of Bay of Bengal[J]. Acta Oceanologica Sinica, 2015, 34(6): 94-100. doi: 10.1007/s13131-015-0689-5

PDF( 7585 KB)

Inter-annual and seasonal variations in hydrological parameters and its implications on chlorophyll a distribution along the southwest coast of Bay of Bengal

doi: 10.1007/s13131-015-0689-5

1.
Centre of Advanced Study in Marine Biology, Faculty of Marine Sciences, Annamalai University, Parangipettai 608502, India
2.
Marine, Geo and Planetary Sciences Group, Space Application Centre (ISRO), Ahmedabad 380015, India

Received Date: 2014-03-27
Rev Recd Date: 2014-11-18

Abstract

Abstract

Seasonal and inter-annual variability of hydrological parameters and its impact on chlorophyll distribution was studied from January 2009 to December 2011 at four coastal stations along the southwest Bay of Bengal. Statistical analysis (principal component analysis (PCA), two-way analysis of variance (ANOVA) and correlation analysis) showed the significant impact of hydrological parameters on chlorophyll distribution in the study area. The ranges of different parameters recorded were 23.8-33.8℃ (SST), 4.00-36.00 (salinity), 7.0-9.2 (pH), 4.41-8.32 mg/L (dissolved oxygen), 0.04-2.45 μmol/L (nitrite), 0.33-16.10 μmol/L (nitrate), 0.02-2.51 μmol/L (ammonia), 0.04-3.32 μmol/L (inorganic phosphate), 10.09-85.28 μmol/L (reactive silicate) and 0.04-13.8 μg/L (chlorophyll). PCA analysis carried out for different seasons found variations in the relationship between physico-chemical parameters and chlorophyll in which nitrate and chlorophyll were positively loaded at PC1 (principal component 1) during spring inter-monsoon and at PC2 (principal component 2) during other seasons. Likewise correlation analysis also showed significant positive relationship between chlorophyll and nutrients especially with nitrate (r=0.734). Distribution of hydrobiological parameters between stations and distances was significantly varying as evidenced from the ANOVA results. The study found that the spatial and temporal distribution of chlorophyll was highly dependent on the availability of nutrients especially, nitrate in the southwest Bay of Bengal coastal waters.
- chlorophyll,
- nutrients,
- PCA,
- nitrate,
- correlation analysis,
- Bay of Bengal

FullText(HTML)

References(33)

References

Begum M, Hossain M Y, Wahab M A, et al. 2003. Effects of iso-phos-phorous fertilizers on water quality and biological productivity in fish pond. J Aquacult Trop, 18(1): 1-12

Chen C-T A, Wang Shulun, Wang B-J, et al. 2001. Nutrient budgets for the South China Sea basin. Mar Chem, 75(4): 281-300

Choudhury A K, Pal R. 2010. Phytoplankton and nutrient dynamics of shallow coastal stations at Bay of Bengal, Eastern Indian coast. Aqua Ecol, 44(1): 55-71

Das J, Das S N, Sahoo R K. 1997. Semidiurnal variation of some physi-cochemical parameters in the Mahanadi estuary, east coast of India. Indian J Mar Sci, 26: 323-326

Frieder C A, Nam S H, Mariz T R, et al. 2012. High temporal and spa-tial variability of dissolved oxygen and pH in a nearshore Cali-fornia kelp forest. Biogeosci, 9: 3917-3930

Gopalakrishna V V, Sastry J S. 1985. Surface circulation over the shelf off the East Coast of India during the southwest monsoon. Indi-an J Mar Sci, 14: 62-66

Gruber N. 2011. Warming up, turning sour, losing breath: ocean biogeochemistry under global change. Phil Trans R Soc, 369(1943): 1980-1996

Habeebrehman H. 2009. Biological responses to upwelling and strati-fication in the eastern Arabian Sea [dissertation]. Cochi: Coch-in University of Science and Technology, National Institute of Oceanography, 260

Hofmann G E, Smith J E, Johnson K S, et al. 2011. High-frequency dy-namics of ocean pH: A multi-ecosystem comparison. PLoS One, 6(12): e28983, doi: 10.1371/journal.pone.0028983

Hossain M Y, Jasmine S, Ibrahim A H M, et al. 2007. A preliminary ob-servation on water quality and plankton of an earthen Fish Pond in Bangladesh: recommendations for future studies. Pakistan J Biol Sci, 10(6): 868-873

UNESCO. 1994. Protocols for the joint global ocean flux study (JGOFS) core measurements. IOC Manuals and Guides. No. 29. Paris: UNESCO, 97-100

Kumar S P, Muraleedharan P M, Prasad T G, et al. 2002. Why is the Bay of Bengal less productive during summer monsoon com-pared to the Arabian Sea?. Geophys Res Lett, 29(24): 2235

Kumar S P, Nuncio M, Narvekar J, et al. 2010. Seasonal cycle of phys-ical forcing and biological response in the Bay of Bengal. Indi-an J Mar Sci, 39(3): 388-405

Kumar S P, Nuncio M, Ramaiah N, et al. 2007. Eddy-mediated biolo-gical productivity in the Bay of Bengal during fall and spring in-termonsoons. Deep-Sea Research Part I: Oceanographic Re-search Papers, 54(9): 1619-1640

Madhupratap M, Gauns M, Ramaiah N, et al. 2003. Biogeochemistry of the Bay of Bengal: Physical, chemical and primary productiv-ity characteristics of the central and western Bay of Bengal dur-ing summer monsoon 2001. Deep-Sea Research Part II: Topical Studies in Oceanography, 50(5): 881-896

Mujumdar M, Salunke K, Suryachandra A R, et al. 2011. Diurnal cycle induced amplification of sea surface temperature intraseason-al oscillations over the Bay of Bengal in Summer Monsoon Sea-son. IEEE Geosci Remote Sens Lett, 8(2): 206-210

Murty C S, Varadachari V V R. 1968. Upwelling along the east coast of India. Bull Natl Inst Sci India, 36: 80-86

Naik S, Acharya B C, Mohapatra A. 2009. Seasonal variations of phytoplankton in Mahanadi estuary, east coast of India. Indian J Mar Sci, 38(2): 184-190

Nagamani P V, Shikhakolli R, Chauhan P. 2011. Phytoplankton vari-ability in the Bay of Bengal during winter monsoon using Oceansat-1 Ocean Colour Monitor data. J Indian Soc Remote Sens, 39(1): 117-126

Narvekar J, Kumar S P. 2006. Seasonal variability of the mixed layer in the central Bay of Bengal and associated changes in nutrients and chlorophyll. Deep-Sea Research Part I: Oceanographic Re-search Papers, 53(5): 820-835

Poornima D, Shanthi R, Raja S, et al. 2013. Understanding the spatial variability of chlorophyll a and total suspended matter distribu-tion along the southwest Bay of Bengal using in-situ and OCM-2 & MODIS-Aqua measurements. J Indian Soc Remote Sens, 41(3): 651-662

Sardessai S, Maya M V, Shetye S, et al. 2010. Environmental controls on the seasonal carbon dioxide fluxes in the northeastern Indi-an Ocean. Indian J Mar Sci, 39(2): 192-200

Sardessai S, Ramaiah N, Kumar S P, et al. 2007. Influence of environ-mental forcings on the seasonality of dissolved oxygen and nu-trients in the Bay of Bengal. J Mar Res, 65(2): 301-316

Satpathy K K, Mohanty A K, Natesan U, et al. 2010. Seasonal variation in physicochemical properties of coastal waters of Kalpakkam, east coast of India with special emphasis on nutrients. Environ Monit Assess, 164(1-4): 153-171

Shenoi S S C, Nasnodkar N, Rajesh G, et al. 2009. On the diurnal ranges of Sea Surface Temperature (SST) in the north Indian Ocean. J Earth Syst Sci, 118(5): 483-496

Shetye S R, Gouveia A D, Shenoi S S C, et al. 1991. The coastal cur-rents off western India during the north east monsoon. Deep-Sea Research Part I: Oceanographic Research Papers, 38(12): 1517-1529

Shetye S R, Gouveia A D, Shenoi S S C, et al. 1993. The western boundary current of the seasonal subtropical gyre in the Bay of Bengal. J Geophys Res, 98(C1): 945-954

Strickland J D H, Parsons T R. 1972. A Practical Handbook of Seawa-ter Analysis. Ottawa: Bull Fisheries Research Board of Canada, 1-310

Thangaradjou T, Sethubathi G V, Raja S, et al. 2012. Influence of en-vironmental variables on phytoplankton floristic pattern along the shallow coasts of southwest Bay of Bengal. Algal Res, 1(2): 143-154

Türkoğlu M. 2010. Temporal variations of surface phytoplankton, nu-trients and chlorophyll a in the Dardanelles (Turkish Straits System): a coastal station sample in weekly time intervals. Turk J Biol, 34(3): 319-333

Turkoglu M, Oner C. 2010. Short time variations of winter phyto-plankton, nutrient and chlorophyll a of kepez harbor in the dardanelles (.anakkale Strait, Turkey). Turk J Fish Aquat Sci, 10: 537-548

Yoder J A. 2000. An overview of temporal and spatial patterns in satel-lite derived chlorophyll imagery and their relation to ocean processes. In: Halpern D, ed. Satellites, Oceanography and So-ciety. Amsterdam: Elsevier Science B V, 225-238

Yu Z, McCreary Jr J P. 2004. Assessing precipitation products in the Indian Ocean using an ocean model. J Geophys Res, 109(C5): C05013

Relative Articles

Supplements(0)

Cited By

Proportional views