scholarly journals Effects of ocean acidification on Antarctic marine organisms: A meta‐analysis

2020 ◽  
Vol 10 (10) ◽  
pp. 4495-4514 ◽  
Author(s):  
Alyce M. Hancock ◽  
Catherine K. King ◽  
Jonathan S. Stark ◽  
Andrew McMinn ◽  
Andrew T. Davidson
Keyword(s):  
Ocean Acidification ◽  
Meta Analysis ◽  
Marine Organisms ◽  
Antarctic Marine

scholarly journals Meta-analysis reveals negative yet variable effects of ocean acidification on marine organisms

2010 ◽  
Vol 13 (11) ◽  
pp. 1419-1434 ◽  
Author(s):  
Kristy J. Kroeker ◽  
Rebecca L. Kordas ◽  
Ryan N. Crim ◽  
Gerald G. Singh
Keyword(s):  
Ocean Acidification ◽  
Meta Analysis ◽  
Marine Organisms

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.

Response to technical comment on `meta-analysis reveals negative yet variable effects of ocean acidification on marine organisms'

2011 ◽  
Vol 14 (9) ◽  
pp. E1-E2 ◽  
Author(s):  
Kristy J. Kroeker ◽  
Rebecca L. Kordas ◽  
Ryan N. Crim ◽  
Gerald G. Singh
Keyword(s):  
Ocean Acidification ◽  
Meta Analysis ◽  
Marine Organisms

Effects and mechanisms of ocean acidification on macromolecules of marine organisms

2013 ◽  
Vol 20 (6) ◽  
pp. 1310-1318
Author(s):  
Zhaokun DING ◽  
Weiru LIU ◽  
Youqing XU
Keyword(s):  
Ocean Acidification ◽  
Marine Organisms

scholarly journals Ocean acidification of a coastal Antarctic marine microbial community reveals a critical threshold for CO<sub>2</sub> tolerance in phytoplankton productivity

2018 ◽  
Vol 15 (1) ◽  
pp. 209-231 ◽  
Author(s):  
Stacy Deppeler ◽  
Katherina Petrou ◽  
Kai G. Schulz ◽  
Karen Westwood ◽  
Imojen Pearce ◽  
...  
Keyword(s):  
Organic Matter ◽  
Ocean Acidification ◽  
Primary Productivity ◽  
Phytoplankton Community ◽  
Bacterial Abundance ◽  
Critical Threshold ◽  
Bacterial Productivity ◽  
High Co2 ◽  
Chl A ◽  
Antarctic Marine

Abstract. High-latitude oceans are anticipated to be some of the first regions affected by ocean acidification. Despite this, the effect of ocean acidification on natural communities of Antarctic marine microbes is still not well understood. In this study we exposed an early spring, coastal marine microbial community in Prydz Bay to CO2 levels ranging from ambient (343 µatm) to 1641 µatm in six 650 L minicosms. Productivity assays were performed to identify whether a CO2 threshold existed that led to a change in primary productivity, bacterial productivity, and the accumulation of chlorophyll a (Chl a) and particulate organic matter (POM) in the minicosms. In addition, photophysiological measurements were performed to identify possible mechanisms driving changes in the phytoplankton community. A critical threshold for tolerance to ocean acidification was identified in the phytoplankton community between 953 and 1140 µatm. CO2 levels  ≥ 1140 µatm negatively affected photosynthetic performance and Chl a-normalised primary productivity (csGPP14C), causing significant reductions in gross primary production (GPP14C), Chl a accumulation, nutrient uptake, and POM production. However, there was no effect of CO2 on C : N ratios. Over time, the phytoplankton community acclimated to high CO2 conditions, showing a down-regulation of carbon concentrating mechanisms (CCMs) and likely adjusting other intracellular processes. Bacterial abundance initially increased in CO2 treatments  ≥ 953 µatm (days 3–5), yet gross bacterial production (GBP14C) remained unchanged and cell-specific bacterial productivity (csBP14C) was reduced. Towards the end of the experiment, GBP14C and csBP14C markedly increased across all treatments regardless of CO2 availability. This coincided with increased organic matter availability (POC and PON) combined with improved efficiency of carbon uptake. Changes in phytoplankton community production could have negative effects on the Antarctic food web and the biological pump, resulting in negative feedbacks on anthropogenic CO2 uptake. Increases in bacterial abundance under high CO2 conditions may also increase the efficiency of the microbial loop, resulting in increased organic matter remineralisation and further declines in carbon sequestration.

scholarly journals Adverse Effect of Ocean Acidification on Marine Organisms

2016 ◽  
Vol 06 (02) ◽  
Author(s):  
Alessandra Gallo ◽  
Elisabetta Tosti
Keyword(s):  
Adverse Effect ◽  
Ocean Acidification ◽  
Marine Organisms

scholarly journals Impact of Ocean Acidification on Marine Organisms—Unifying Principles and New Paradigms

Water ◽  
2015 ◽  
Vol 7 (10) ◽  
pp. 5592-5598 ◽  
Author(s):  
Jason Hall-Spencer ◽  
Mike Thorndyke ◽  
Sam Dupont
Keyword(s):  
Ocean Acidification ◽  
Marine Organisms ◽  
Unifying Principles
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