Seasonal oceanographic phenomenon promotes hitchhiking among the plankton in a coastal marine ecosystem: A tropical perspective

Epibiosis among plankton communities and the role of environmental forcing therein are discussed in this study. We hypothesized that a sub-surface thermal inversion phenomenon and associated hydrographical changes during winter monsoon promoted group/species-specific epibiosis among the plankton in...

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Autores principales:	Alfisa Siddique, Aishee Bhowal, Jasmine Purushothaman, Rakhesh Madhusoodhanan, Chelladurai Raghunathan, Kailash Chandra
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Epibiont Thermal inversion Winter monsoon Ocean stratification Bay of Bengal Tropical waters Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/91c24245396b4a30806073d6633a19d2
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id	oai:doaj.org-article:91c24245396b4a30806073d6633a19d2
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spelling	oai:doaj.org-article:91c24245396b4a30806073d6633a19d22021-12-01T04:55:43ZSeasonal oceanographic phenomenon promotes hitchhiking among the plankton in a coastal marine ecosystem: A tropical perspective1470-160X10.1016/j.ecolind.2021.107914https://doaj.org/article/91c24245396b4a30806073d6633a19d22021-10-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21005793https://doaj.org/toc/1470-160XEpibiosis among plankton communities and the role of environmental forcing therein are discussed in this study. We hypothesized that a sub-surface thermal inversion phenomenon and associated hydrographical changes during winter monsoon promoted group/species-specific epibiosis among the plankton in the western Bay of Bengal. Plankton samples were collected from discrete depths along five transects placed perpendicular to the coast. Water column profiling revealed thermal inversion below the mixed layer depth along three southern transects (APB, APV and APK) and its absence along the two northern transects (ODP and ODG). Multivariate analysis revealed a significant difference in hydrographical properties between these areas. The warmer, highly saline waters of the thermal inversion layer, sandwiched at 10–20 m, between the colder, less saline waters of surface and bottom, supported higher density and diversity of epibionts on copepods and diatoms. The density of epibionts and intensity of epibiosis were significantly lower outside the thermal inversion layer and in the northern transects. Epibionts preferred copepods over diatoms and carnivorous/omnivorous copepods over herbivorous copepods of comparable size. These results suggest that hydrographical variability associated with thermal inversion during winter monsoon support epibiosis among the plankton in the coastal waters of the western Bay of Bengal (BoB). The present investigation is the first-ever study from a coastal marine ecosystem connecting hydrographical features with epibiosis among the plankton. Further studies are warranted to explore the higher frequency of epibiosis in the thermal inversion layer, the nutrient preference and indicator properties of epibionts, and their ecological role in the coastal and open ocean ecosystems.Alfisa SiddiqueAishee BhowalJasmine PurushothamanRakhesh MadhusoodhananChelladurai RaghunathanKailash ChandraElsevierarticleEpibiontThermal inversionWinter monsoonOcean stratificationBay of BengalTropical watersEcologyQH540-549.5ENEcological Indicators, Vol 129, Iss , Pp 107914- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Epibiont Thermal inversion Winter monsoon Ocean stratification Bay of Bengal Tropical waters Ecology QH540-549.5
spellingShingle	Epibiont Thermal inversion Winter monsoon Ocean stratification Bay of Bengal Tropical waters Ecology QH540-549.5 Alfisa Siddique Aishee Bhowal Jasmine Purushothaman Rakhesh Madhusoodhanan Chelladurai Raghunathan Kailash Chandra Seasonal oceanographic phenomenon promotes hitchhiking among the plankton in a coastal marine ecosystem: A tropical perspective
description	Epibiosis among plankton communities and the role of environmental forcing therein are discussed in this study. We hypothesized that a sub-surface thermal inversion phenomenon and associated hydrographical changes during winter monsoon promoted group/species-specific epibiosis among the plankton in the western Bay of Bengal. Plankton samples were collected from discrete depths along five transects placed perpendicular to the coast. Water column profiling revealed thermal inversion below the mixed layer depth along three southern transects (APB, APV and APK) and its absence along the two northern transects (ODP and ODG). Multivariate analysis revealed a significant difference in hydrographical properties between these areas. The warmer, highly saline waters of the thermal inversion layer, sandwiched at 10–20 m, between the colder, less saline waters of surface and bottom, supported higher density and diversity of epibionts on copepods and diatoms. The density of epibionts and intensity of epibiosis were significantly lower outside the thermal inversion layer and in the northern transects. Epibionts preferred copepods over diatoms and carnivorous/omnivorous copepods over herbivorous copepods of comparable size. These results suggest that hydrographical variability associated with thermal inversion during winter monsoon support epibiosis among the plankton in the coastal waters of the western Bay of Bengal (BoB). The present investigation is the first-ever study from a coastal marine ecosystem connecting hydrographical features with epibiosis among the plankton. Further studies are warranted to explore the higher frequency of epibiosis in the thermal inversion layer, the nutrient preference and indicator properties of epibionts, and their ecological role in the coastal and open ocean ecosystems.
format	article
author	Alfisa Siddique Aishee Bhowal Jasmine Purushothaman Rakhesh Madhusoodhanan Chelladurai Raghunathan Kailash Chandra
author_facet	Alfisa Siddique Aishee Bhowal Jasmine Purushothaman Rakhesh Madhusoodhanan Chelladurai Raghunathan Kailash Chandra
author_sort	Alfisa Siddique
title	Seasonal oceanographic phenomenon promotes hitchhiking among the plankton in a coastal marine ecosystem: A tropical perspective
title_short	Seasonal oceanographic phenomenon promotes hitchhiking among the plankton in a coastal marine ecosystem: A tropical perspective
title_full	Seasonal oceanographic phenomenon promotes hitchhiking among the plankton in a coastal marine ecosystem: A tropical perspective
title_fullStr	Seasonal oceanographic phenomenon promotes hitchhiking among the plankton in a coastal marine ecosystem: A tropical perspective
title_full_unstemmed	Seasonal oceanographic phenomenon promotes hitchhiking among the plankton in a coastal marine ecosystem: A tropical perspective
title_sort	seasonal oceanographic phenomenon promotes hitchhiking among the plankton in a coastal marine ecosystem: a tropical perspective
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/91c24245396b4a30806073d6633a19d2
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Seasonal oceanographic phenomenon promotes hitchhiking among the plankton in a coastal marine ecosystem: A tropical perspective

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