Causes And Consequences Of Marine Organisms

1422 Words Dec 4th, 2015 6 Pages
INTRODUCTION
Anthropogenic CO2 release into the atmosphere has led to increasing temperatures in the atmosphere and in the ocean (CITA). Greater amounts of CO2 is causing the oceans to become more acidic (Caldeira & Wickett, 2003; Ross et al., 2011).
Oceans capacity to absorb CO2 from the atmosphere is making them become more acidic (Caldeira & Wickett, 2003; Portner, 2008)
Oceans’ average surface temperature are predicted to rise up to 1.5 C by 2050 and 3 C by 2100 (Donelson et al., 2011; PONER MAS CITAS), simultaneously oceans’ surface pH will decrease from a level of 8.1–8.2 by 0.3–0.5 units by 2100 (pH 7.6–7.9) and 0.7–0.77 units by 2300 (pH 7.33–7.5) (Caldeira & Wickett, 2003; Donelson et al., 2011).
These variations in the environmental could have adverse consequences for marine organisms by modifying their phenology, physiology, behavioural traits, geographic ranges, productivity, and interactions (Bozinovic & Portner, 2015; Caldeira & Wickett, 2003; Murray et al., 2014) especially for the most vulnerable stages (i.e. larvae) (Murray et al., 2014; Ross et al., 2011). However how species will react during its different life stages will depend on their sensitivity to these changes and their capacity to acclimate and adapt (Munday et al., 2009a; Munday et al., 2012)

Studies on the effect of high temperatures on fish have documented that when the pejus temperature is exceeded in the ocean growth rates and reproduction are negatively affected resulting in reduce…
Open Document