Responses of three tropical seagrass species to CO2 enrichment

Ow, Yan Xiang; Collier, Catherine; Uthicke, Sven

doi:10.1007/s00227-015-2644-6

Cited by 53 publications

(61 citation statements)

References 59 publications

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“…Over the short term, we found no effect on shoot elongation rate, which is consistent with previous short-term studies for the same species (Tomas et al 2015) and for the congeneric C. serrulata (Ow et al 2015), as well as for other seagrass species exposed to longer experimental periods (Alexandre et al 2012, Campbell & Fourqurean 2013. The lack of effect in those traits might be explained by the short-term duration of the experiment.…”

Section: Discussionsupporting

confidence: 92%

“…Elucidating the relative importance of the multitude of seagrass responses to ocean acidification, and the form of the interplay between them, will be challenging because ecological responses may be species-specific (Koch et al 2013, Ow et al 2015, mechanical traits are context dependent (interaction with multiple stressors, La Nafie et al 2012Nafie et al , 2013seasonal anddevelopmental timing, de los Santos et al 2012, 2016b), and both of these are complicated further by acclimation/adaptive capacity (Stillman & Paganini 2015).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Short-term growth and biomechanical responses of the temperate seagrass Cymodocea nodosa to CO2 enrichment

Santos¹,

Godbold²,

Solan³

2017

Mar. Ecol. Prog. Ser.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Short-term growth and biomechanical responses of the temperate seagrass Cymodocea nodosa to CO2 enrichment

Santos¹,

Godbold²,

Solan³

2017

Mar. Ecol. Prog. Ser.

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“…Sucrose is the principal end-product of leaf photosynthesis54; and the higher content found in our study is thus likely resulting from the increased photosynthetic activity during the early development of the seedlings. In general, higher CO 2 availability increases photosynthetic activity in seagrasses30343555 which sometimes translates into increases in aboveground biomass or growth333539. However this increase in photosynthesis and thus in carbon incorporation is not always allocated to aboveground growth323445.…”

Section: Discussionmentioning

confidence: 99%

Seagrass (Posidonia oceanica) seedlings in a high-CO2 world: from physiology to herbivory

Hernán

Ramajo

Basso

et al. 2016

Sci Rep

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Under future increased CO2 concentrations, seagrasses are predicted to perform better as a result of increased photosynthesis, but the effects in carbon balance and growth are unclear and remain unexplored for early life stages such as seedlings, which allow plant dispersal and provide the potential for adaptation under changing environmental conditions. Furthermore, the outcome of the concomitant biochemical changes in plant-herbivore interactions has been poorly studied, yet may have important implications in plant communities. In this study we determined the effects of experimental exposure to current and future predicted CO2 concentrations on the physiology, size and defense strategies against herbivory in the earliest life stage of the Mediterranean seagrass Posidonia oceanica. The photosynthetic performance of seedlings, assessed by fluorescence, improved under increased pCO2 conditions after 60 days, although these differences disappeared after 90 days. Furthermore, these plants exhibited bigger seeds and higher carbon storage in belowground tissues, having thus more resources to tolerate and recover from stressors. Of the several herbivory resistance traits measured, plants under high pCO2 conditions had a lower leaf N content but higher sucrose. These seedlings were preferred by herbivorous sea urchins in feeding trials, which could potentially counteract some of the positive effects observed.

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“…Seagrass meadows are valuable ecosystems functioning as carbon sinks for long-term carbon storage (Fourqurean et al, 2012). Seagrass growth is predicted to change in an elevated CO 2 environment (Alexandre et al, 2012;Ow et al, 2015), and gene expression (Winters et al, 2011) and transcriptomic responses have been assessed under simulated heatwaves (Franssen et al, 2014) and growth under light limitation (Ralph et al, 2007) in an attempt to predict the response of seagrass to climate change.…”

mentioning

confidence: 99%