Biophysical implications of the freshwater influx over small spatial scale in the coastal waters along the southwest coast of India during the Southwest Monsoon

Santhikrishnan, S.; Jyothibabu, R.; Albin, K.J.; Alok, K.T.; Karnan, C.; Arunpandi, N.; Camey, M.F.; Kumar, T. R. Gireesh

doi:10.1016/j.csr.2020.104337

Cited by 15 publications

(1 citation statement)

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“…The copyright holder for this preprint this version posted July 13, 2023. ; https://doi.org/10.1101/2023.07.13.548871 doi: bioRxiv preprint upward movement of nutrient-rich waters from sub-surface layers of the ocean. This phenomenon stimulates phytoplankton productivity and ultimately results in the production of a large amount of OM in this region (Ram et al 2003;Jacob et al, 2009;Santhikrishnan et al 2021). The nutrient-rich characteristics of upwelled water promote enhanced primary production, leading to increased bacterial abundance (Ramaiah et al 2009;Lamont et al 2014;Rocke et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Elucidating the functional profiles of cultivable bacterial communities in the water and sediments during the southwest monsoon season, along the west coast of India

Parab

Ghose

Manohar

2023

Preprint

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Understanding the functional profiles of cultivable bacterial communities is crucial for comprehending their ecological significance in marine environments. This study investigates the functional profiles of cultivable bacterial communities in the water and sediments during the productive, southwest monsoon season, along the west coast of India. The southwest monsoon plays a vital role in shaping the hydrological and biogeochemical characteristics of this region, making it an ideal period to study bacterial communities and their functions. Our study utilizes a cultivation techniques to study taxonomy as well as functional assays to elucidate the diverse organic substrates utilization capabilities of bacterial communities. Cultivable bacteria were isolated from discrete water depths and sediment samples from the coastal and off-shore region. Subsequently the carbohydrase, lipase and protease assays were performed to assess its functional potential. The results of this study reveal a rich diversity of cultivable bacterial communities including, representative from Proteobacteria, Firmicutes and Actinobacterial phylum with diverse functional profiles. The functional analyses provide insights into the metabolic capabilities of the bacteria, including organic substrates degradation, processes. The bacterial taxonomic diversity and enzymes activities were significantly different (p < 0.001) among the water and sediment bacterial morphotypes. In conclusion, this research sheds light on the functional profiles of cultivable bacterial communities in the water and sediments along the west coast of India during the productive southwest monsoon season. The comprehensive analysis of their functional capabilities provides insights into their ecological roles and potential significance in organic matter recycling. These findings contribute to our understanding of microbial diversity and ecosystem functioning in coastal environments and lay the groundwork for further research on harnessing the significance of these bacteria in biogeochemical cycling.

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