Record Details

Influence of elevated temperature and pCO2 on the marine periphytic diatom Navicula distans and its associated organisms in culture

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Influence of elevated temperature and pCO2 on the marine periphytic diatom Navicula distans and its associated organisms in culture
 
Creator Baragi, L.V.
Khandeparker, L.
Anil, A.C.
 
Subject AQUATIC COMMUNITIES
AQUATIC ECOLOGY, PRODUCTIVITY
AQUATIC POLLUTION
 
Description Influence of temperature and pCO2, reflecting the future climatic scenario, on the marine periphytic diatom (Navicula distans) and its associated organisms was evaluated. Navicula distans along with its associated picoperiphyte and heterotrophic bacteria were exposed to two temperatures (30°C—present day, and 34°C—projected for year 2100) and pCO2 levels (~500 µatm—present day, and ~1500 µatm—projected for year 2100) in a 2 × 2 factorial design. It was observed that rising temperature reduced the abundance of N. distans and picoperiphyte, but increased that of heterotrophic bacteria. On the other hand, rising pCO2 favoured the growth of N. distans and picoperiphyte and had no significant effect on the bacterial growth. Synergistically, rising temperature and pCO2 had a negative effect on N. distans, and a positive effect on picoperiphyte and heterotrophic bacteria. Additionally, this also resulted in the reduction of diatom cell size. This study suggests that in the future climatic scenario, increased abundance of picoperiphyte and heterotrophic bacteria along with smaller N. distans cells might influence the carbon budget and may have a cascading effect on higher trophic levels.
 
Date 2015-12-08T06:35:50Z
2015-12-08T06:35:50Z
2015
 
Type Journal Article
 
Identifier Hydrobiologia, vol.762(1); 2015; 127-142
no
http://drs.nio.org/drs/handle/2264/4867
 
Language en
 
Relation Hydrobiologia_762_127.jpg
 
Rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2015] Springer.
 
Publisher Springer