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Assimilation potential of water column biota: Mesocosm-based evaluations

DRS at CSIR-National Institute of Oceanography

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Title Assimilation potential of water column biota: Mesocosm-based evaluations
 
Creator Ramaiah, N.
Ansari, Z.A.
Sadhasivan, A.
Naik, S.
Sawkar, K.
 
Subject water column
biota
nutrients (mineral)
pollutants
pollution effects
ecosystems
seasonal variations
water quality
environmental monitoring
tourism
 
Description This chapter presents a generalized picture of various aspects of assimilation by native biota and underscores the importance of safeguarding the environment from excessive discharge of nutrient-rich effluents, even though they are non-toxic. It reveals the findings of mesocosm experiments, conducted to evaluate the assimilation potential of water column biota (bacteria, phytoplankton, and zooplankton). Bulk water quantities from coastal locations, characterized by intense tourist activity, were brought to set up mesocosms during pre-monsoon, monsoon, and post-monsoon periods. Six different conditions - with organic nutrients (urea), inorganic nutrients (nitrate, phosphate), and toxic responses of biotic components to altered situations. Several relevant parameters were monitored through the three seasons. Results of the study suggest that the native biota cannot utilize nutrients beyond certain limits even in a non-toxic, unpolluted condition. Also, toxic chemicals are far more deleterious in combination than individually
 
Date 2008-07-18T05:07:18Z
2008-07-18T05:07:18Z
2003
 
Type Book Chapter
 
Identifier Coastal tourism, environment, and sustainable local development, eds. Noronha, L.; Lourenco, N.; Lobo-Ferreira, J.P.; Lleopart, A.; Feoli, E.; Sawkar, K.; Chachadi, A. 231-250p.
http://drs.nio.org/drs/handle/2264/1201
 
Language en
 
Rights Copyright [2003]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice that the rights are violated then the item would be withdrawn.
 
Publisher Tata Energy Research Institute, India