Ocean acidification increases domoic acid contents during a spring to summer succession of coastal phytoplankton

Harmful Algae ◽  
2020 ◽  
Vol 92 ◽  
pp. 101697
Author(s):  
Sylke Wohlrab ◽  
Uwe John ◽  
Kerstin Klemm ◽  
Tim Eberlein ◽  
Anna Maria Forsberg Grivogiannis ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Domoic Acid ◽  
Coastal Phytoplankton

Effect of ocean acidification on coastal phytoplankton composition and accompanying organic nitrogen production

2011 ◽  
Vol 68 (1) ◽  
pp. 183-194 ◽  
Author(s):  
Takeo Hama ◽  
Shoko Kawashima ◽  
Koichi Shimotori ◽  
Yuhi Satoh ◽  
Yuko Omori ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Organic Nitrogen ◽  
Phytoplankton Composition ◽  
Coastal Phytoplankton

scholarly journals Effect of excessive CO2 on physiological functions in coastal diatom

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Feng-Jiao Liu ◽  
Shun-Xing Li ◽  
Bang-Qin Huang ◽  
Feng-Ying Zheng ◽  
Xu-Guang Huang
Keyword(s):  
Climate Change ◽  
Ocean Acidification ◽  
Cell Density ◽  
Algal Biomass ◽  
Nutritional Value ◽  
Significant Negative Correlation ◽  
Physiological Functions ◽  
Coastal Phytoplankton ◽  
Influence Of Ph ◽  
Photosynthesis And Respiration

Abstract Rising dissolution of anthropogenic CO2 in seawater may directly/indirectly cause ocean acidification and desalination. However, little is known about coastal physiological functions sensitivity to these processes. Here we show some links between ocean acidification/desalination and physiological functions in Thalassiosira weissflogii. Cell density (CD), protein, chlorophyll a (Chl a), malonaldehyde (MDA), superoxide dismutase (SOD), and carbonic anhydrase (CAs) were determined for the assessment of algal biomass, nutritional value, photosynthesis and respiration, lipid peroxidation, antioxidant capacity, and carbon sequestration ability. The influence of pH on the algal Chl a and MDA were extremely significant (P < 0.01). Salinity (S) on cell density and acidity (pH) on protein was significant (0.01 < P < 0.05). Additionally, a significant negative-correlation was observed between cell density and CAs. CAs and SOD had negatively correlations with CD, Chl a, protein, and MDA under pH or S influence, but positive correlation between themselves. Coastal physiological functions were affected by increasing order was acidification < acidification + desalination < desalination for Chl a and protein, desalination < acidification + desalination < acidification for SOD and CAs. Thus, the ongoing excessive CO2-driven ocean acidification and desalination should be of high attention when assessing the risks of climate change on coastal phytoplankton.

scholarly journals The Effects of Ocean Acidification and Warming on Growth of a Natural Community of Coastal Phytoplankton

2020 ◽  
Vol 8 (10) ◽  
pp. 821
Author(s):  
Bonggil Hyun ◽  
Ja-Myung Kim ◽  
Pung-Guk Jang ◽  
Min-Chul Jang ◽  
Keun-Hyung Choi ◽  
...  
Keyword(s):  
Species Composition ◽  
Ambient Temperature ◽  
Ocean Acidification ◽  
Harmful Algal Blooms ◽  
Algal Blooms ◽  
Standing Stock ◽  
Co2 Concentration ◽  
Natural Seawater ◽  
Element Cycling ◽  
Coastal Phytoplankton

An in situ mesocosm experiment was performed to investigate the combined effects of ocean acidification and warming on the coastal phytoplankton standing stock and species composition of a eutrophic coastal area in the temperate-subtropical region. Experimental treatments of natural seawater included three CO2 and two temperature conditions (present control: ~400 μatm CO2 and ambient temperature, acidification conditions: ~900 μatm CO2 and ambient temperature, and greenhouse conditions: ~900 μatm CO2 and ambient temperature +3 °C). We found that increased CO2 concentration benefited the growth of small autotrophic phytoplankton groups: picophytoplankton (PP), autotrophic nanoflagellates (ANF), and small chain-forming diatoms (DT). However, in the greenhouse conditions, ANF and DT abundances were lower compared with those in the acidification conditions. The proliferation of small autotrophic phytoplankton in future oceanic conditions (acidification and greenhouse) also increased the abundance of heterotrophic dinoflagellates (HDF). These responses suggest that a combination of acidification and warming will not only increase the small autotrophic phytoplankton standing stock but, also, lead to a shift in the diatom and dinoflagellate species composition, with potential biogeochemical element cycling feedback and an increased frequency and intensity of harmful algal blooms.

scholarly journals Simulated ocean acidification reveals winners and losers in coastal phytoplankton

PLoS ONE ◽  
2017 ◽  
Vol 12 (11) ◽  
pp. e0188198 ◽  
Author(s):  
Lennart T. Bach ◽  
Santiago Alvarez-Fernandez ◽  
Thomas Hornick ◽  
Annegret Stuhr ◽  
Ulf Riebesell
Keyword(s):  
Ocean Acidification ◽  
Coastal Phytoplankton

Effects of ocean acidification on larval development and early post-hatching traits in Concholepas concholepas (loco)

2014 ◽  
Vol 514 ◽  
pp. 87-103 ◽  
Author(s):  
PH Manríquez ◽  
ME Jara ◽  
ML Mardones ◽  
R Torres ◽  
NA Lagos ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Larval Development ◽  
Concholepas Concholepas
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