The combined effects of ocean acidification and warming on a habitat-forming shell-crushing predatory crab

2021 ◽  
Vol 758 ◽  
pp. 143587
Author(s):  
Patricio H. Manríquez ◽  
Claudio P. González ◽  
Mylene Seguel ◽  
M. Roberto Garcia-Huidobro ◽  
Karin B. Lohrmann ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Combined Effects

scholarly journals Individual and interacting effects of <i>p</i>CO<sub>2</sub> and temperature on <i>Emiliania huxleyi</i> calcification: study of the calcite production, the coccolith morphology and the coccosphere size

2009 ◽  
Vol 6 (6) ◽  
pp. 11127-11157 ◽  
Author(s):  
C. De Bodt ◽  
N. Van Oostende ◽  
J. Harlay ◽  
K. Sabbe ◽  
L. Chou
Keyword(s):  
Ocean Acidification ◽  
Inorganic Carbon ◽  
Co2 Concentration ◽  
Combined Effects ◽  
Cell Abundance ◽  
Organic Carbon Concentration ◽  
The Individual ◽  
Increasing Temperature ◽  
The Impact ◽  
Particulate Inorganic Carbon

Abstract. The impact of ocean acidification and increased water temperature on marine ecosystems, in particular those involving calcifying organisms, has been gradually recognised. We examined the individual and combined effects of increased pCO2 (180 ppm V CO2, 380 ppm V CO2 and 750 ppm V CO2 corresponding to past, present and future CO2 conditions, respectively) and temperature (13°C and 18°C) during the calcification phase of the coccolithophore E. huxleyi using batch culture experiments. We showed that the cell abundance-normalized particulate organic carbon concentration (POC) increased from the present to the future CO2 treatments. A significant effect of pCO2 and of temperature on calcification was found, manifesting itself in a lower cell abundance-normalized particulate inorganic carbon (PIC) content as well as a lower PIC:POC ratio at future CO2 levels and at 18°C. Coccosphere-sized particles showed a size reduction trend with both increasing temperature and CO2 concentration. The influence of the different treatments on coccolith morphology was studied by categorizing SEM coccolith micrographs. The number of well-formed coccoliths decreased with increasing pCO2 while temperature did not have a significant impact on coccolith morphology. No interacting effect of pCO2 and temperature was observed on calcite production, coccolith morphology or on coccosphere size. Finally, our results suggest that ocean acidification might have a larger adverse impact on coccolithophorid calcification than surface water warming.

scholarly journals The Combined Effects of Ocean Acidification and Heavy Metals on Marine Organisms: A Meta-Analysis

2021 ◽  
Vol 8 ◽  
Author(s):  
Peng Jin ◽  
Jiale Zhang ◽  
Jiaofeng Wan ◽  
Sebastian Overmans ◽  
Guang Gao ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Ocean Acidification ◽  
Meta Analysis ◽  
Marine Organisms ◽  
Interactive Effects ◽  
Considerable Proportion ◽  
Combined Effects ◽  
Anthropogenic Pollutants ◽  
Taxonomic Groups ◽  
Antagonistic Interactions

Ocean acidification (OA) may interact with anthropogenic pollutants, such as heavy metals (HM), to represent a threat to marine organisms and ecosystems. Here, we perform a quantitative meta-analysis to examine the combined effects of OA and heavy metals on marine organisms. The results reveal predominantly additive interactions (67%), with a considerable proportion of synergistic interactions (25%) and a few antagonistic interactions (8%). The overall adverse effects of heavy metals on marine organisms were alleviated by OA, leading to a neutral impact of heavy metals in combination with OA. However, different taxonomic groups showed large variabilities in their responses, with microalgae being the most sensitive when exposed to heavy metals and OA, and having the highest proportion of antagonistic interactions. Furthermore, the variations in interaction type frequencies are related to climate regions and heavy metal properties, with antagonistic interactions accounting for the highest proportion in temperate regions (28%) and when exposed to Zn (52%). Our study provides a comprehensive insight into the interactive effects of OA and HM on marine organisms, and highlights the importance of further investigating the responses of different marine taxonomic groups from various geographic locations to the combined stress of OA and HM.

Combined effects of short-term ocean acidification and heat shock in a benthic copepod Tigriopus japonicus Mori

2015 ◽  
Vol 162 (9) ◽  
pp. 1901-1912 ◽  
Author(s):  
Wei Li ◽  
Guodong Han ◽  
Yunwei Dong ◽  
Atsushi Ishimatsu ◽  
Bayden D. Russell ◽  
...  
Keyword(s):  
Heat Shock ◽  
Ocean Acidification ◽  
Combined Effects ◽  
Short Term ◽  
Tigriopus Japonicus ◽  
Copepod Tigriopus Japonicus
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