The response of a natural phytoplankton community from the Godavari River Estuary to increasing CO2 concentration during the pre-monsoon period

Biswas, Haimanti; Cros, Alexander; Yadav, Kavita; Ramana, V. Venkata; Prasad, Vandana; Acharyya, Tamoghna; Babu, P.V. Raghunadh

doi:10.1016/j.jembe.2011.06.027

Cited by 27 publications

(20 citation statements)

References 58 publications

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“…The steady increase of carbon dioxide (CO 2 ) due to anthropogenic emission since the beginning of the industrial era has increased the atmospheric concentration (Boyd et al, 2014). The ocean has a large carbon sink capacity, and increasing atmospheric CO 2 absorbed by the ocean is changing the chemistry of the seawater, causing a decline in pH, termed "ocean acidification" (OA; Boyd et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…The ocean has a large carbon sink capacity, and increasing atmospheric CO 2 absorbed by the ocean is changing the chemistry of the seawater, causing a decline in pH, termed "ocean acidification" (OA; Boyd et al, 2014). OA has been shown to affect various biological processes of diverse marine species (Doney et al, 2009;Kroeker et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…For instance, OA can impact the biochemical and elemental composition of organisms (Sato et al, 2003;Torstensson et al, 2013), which can be transferred to higher trophic levels (Rossoll et al, 2012). OA can also drive alterations in the community composition structure of primary producers (Hare et al, 2007;Biswas et al, 2011;Schulz et al, 2013). Strong CO 2 effects may be particularly significant in marine species that experience low natural fluctuations in CO 2 (Riebesell, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, increasing seawater CO 2 can modify phytoplankton community composition by favouring certain taxa of primary producers (Graeme et al, 2005). In particular, small-sized cells benefit from high CO 2 (Hare et al, 2007;Biswas et al, 2011;Brussaard et al, 2013). This is ecologically relevant as taxonomic phytoplankton groups have contrasting FA profiles (Galloway and Winder, 2015) and a change in community structure can affect higher trophic levels.…”

Section: Introductionmentioning

confidence: 99%

“…Laboratory studies have shown that algae subjected to longterm high CO 2 levels can restore their physiological optima through adaptive evolution (Lohbeck et al, 2012;Bermúdez et al, 2015) and that coastal communities are resilient to OA-driven changes in community composition and biomass (Nielsen et al, 2010;Rossoll et al, 2013). Therefore, it can be expected that organisms in these areas are adapted to high CO 2 fluctuations (Thomsen et al, 2010;Nielsen et al, 2010;Rossoll et al, 2013), hampering any CO 2 -driven effects previously observed in plankton communities (Locke and Sprules, 2000;Biswas et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Effect of ocean acidification on the structure and fatty acid composition of a natural plankton community in the Baltic Sea

et al. 2016

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Abstract. Increasing atmospheric carbon dioxide (CO 2 ) is changing seawater chemistry towards reduced pH, which affects various properties of marine organisms. Coastal and brackish water communities are expected to be less affected by ocean acidification (OA) as these communities are typically adapted to high fluctuations in CO 2 and pH. Here we investigate the response of a coastal brackish water plankton community to increasing CO 2 levels as projected for the coming decades and the end of this century in terms of community and biochemical fatty acid (FA) composition. A Baltic Sea plankton community was enclosed in a set of offshore mesocosms and subjected to a CO 2 gradient ranging from natural concentrations (∼ 347 µatm f CO 2 ) up to values projected for the year 2100 (∼ 1333 µatm f CO 2 ). We show that the phytoplankton community composition was resilient to CO 2 and did not diverge between the treatments. Seston FA composition was influenced by community composition, which in turn was driven by silicate and phosphate limitation in the mesocosms and showed no difference between the CO 2 treatments. These results suggest that CO 2 effects are dampened in coastal communities that already experience high natural fluctuations in pCO 2 . Although this coastal plankton community was tolerant of high pCO 2 levels, hypoxia and CO 2 uptake by the sea can aggravate acidification and may lead to pH changes outside the currently experienced range for coastal organisms.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of ocean acidification on the structure and fatty acid composition of a natural plankton community in the Baltic Sea

et al. 2016

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Climate Change

2021

Tropical Marine Ecology

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A combination of salinity and pH affects the recruitment of Gladioferens pectinatus (Brady) (Copepoda; Calanoida)

Hemraj

Allais

Leterme

2017

Limnology & Oceanography

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Carbon dioxide levels in many estuaries fluctuate and, in several cases, reach extremes much higher than those predicted for oceans by the end of the century. Moreover, estuaries are characterized by natural fluctuations in salinity, and reduced pH, from increased pCO 2 , exposes estuarine organisms to multiple stresses. Although the effects of low pH on the reproduction of several marine copepod species have been assessed, studies examining effects of pH in estuarine copepod species are extremely scarce. Here, we aim at understanding the reproductive response of Gladioferens pectinatus to the stress posed by both salinity and pH. G. pectinatus was exposed to salinities 2 and 10, at four different pH levels each. Our results show no impairment in the brood size, embryonic development time and hatching success under low pH levels at either salinities. However, at salinity 2, the percentage of nauplii growing into adults significantly decreased at low pH, whereas at salinity 10, no major effect was observed. We argue that the combination of osmoregulation and acidity induced stress response can affect the development of nauplii and copepodites, as well as adult recruitment, likely due to energy reallocation and molting impairment. We also argue that resilience and phenotypic plasticity highly influence the ability of different copepod species and populations to reproduce and grow under stressful combinations of environmental parameters. This study points out the importance of understanding the effects of multiple stresses or parameters on the adaptability of organisms to water acidification.

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The response of a natural phytoplankton community from the Godavari River Estuary to increasing CO2 concentration during the pre-monsoon period

Cited by 27 publications

References 58 publications

Effect of ocean acidification on the structure and fatty acid composition of a natural plankton community in the Baltic Sea

Effect of ocean acidification on the structure and fatty acid composition of a natural plankton community in the Baltic Sea

Climate Change

A combination of salinity and pH affects the recruitment of Gladioferens pectinatus (Brady) (Copepoda; Calanoida)

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