Record Details

Climatic Projections of Indian Ocean During 2030, 2050, 2080 with Implications on Fisheries Sector

CMFRI Repository

View Archive Info
 
 
Field Value
 
Relation http://eprints.cmfri.org.in/13966/
https://www.jcronline.org/doi/full/10.2112/SI86-030.1
10.2112/ SI86-030.1
 
Title Climatic Projections of Indian Ocean During 2030, 2050, 2080 with
Implications on Fisheries Sector
 
Creator Akhiljith, P J
Benjamin, Liya
Rojith, G
Zacharia, P U
George, Grinson
Ajitha, S
Lakshmi, P M
Sajna, V H
Sathianandan, T V
 
Subject Climate change
Marine Environment
 
Description Climatic projections are essential to frame resilient strategies towards futuristic impacts of climate changes on fish
species and habitat. The present study projects the variations of climatic variables such as Sea Surface Temperature
(SST), Sea Surface Salinity (SSS), Sea Level Rise (SLR), Precipitation (Pr), and pH along the Indian Ocean. Climate
projections for 2030, 2050 and 2080 were obtained as MIROC-ESM-CHEM, CMIP5 model output for each
Representative Concentration Pathways (RCP) scenarios. Each climatic variable was assessed for any change against
the reference year of 2015. The RCP scenarios showed an increasing trend for SLR and SST while a decreasing trend
for SSS and pH. The study focuses on assessing the impacts of projected variations on marine and aquaculture
system. The climate model projections show that the SST during 2080 is likely to rise by 0.69oC for the lowest
emissions scenario and 2.6oC for the highest emissions scenario. Elevated temperature disturbs the homeostasis of
fish and subjects to physiological stress in the habitat resulting in mortality. These thermal limits can predict
distributional changes of marine species in response to climate change. Projections showed no significant changes in
the pattern of precipitation. Changes in sea level rise and sea surface salinity reduce water quality, spawning and seed
availability, increased disease incidence and damage to freshwater aquaculture system by salinization of
groundwater. The results show that variation in SST and pH have a potential impact on marine fisheries while SSS,
SLR, Precipitation affects the aquaculture systems. The synergic effects of climatic variations are found to have
negative implications on capture fisheries as well as aquaculture system and are elucidated through this work.
 
Date 2019
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/13966/1/Journal%20of%20Coastal%20Research_2019_Grinson%20George_Climatic%20Projections%20of%20Indian%20Ocean%20During%202030%2C%202050%2C%202080.pdf
Akhiljith, P J and Benjamin, Liya and Rojith, G and Zacharia, P U and George, Grinson and Ajitha, S and Lakshmi, P M and Sajna, V H and Sathianandan, T V (2019) Climatic Projections of Indian Ocean During 2030, 2050, 2080 with Implications on Fisheries Sector. Journal of Coastal Research, 86. pp. 198-208.