[Coral-List] new paper on coral reef ecosystem metabolism

[diack Ibrahima]

Hi dear Katie,
Thank you for sharing this paper!
I am very interesting by ocean acidification, but in our country (Senegal)
the main problem, is the infrastructure availability.
So do someone have suggestions to found collaboration? Because Senegal
belong Canary Current Upwelling System and I could affirm that any study
related ocean acidification is done in this zone.

Diack

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On Thu, Sep 19, 2019 at 6:43 PM Katie Shamberger via Coral-List <
coral-list at coral.aoml.noaa.gov> wrote:

> Hi all,
> I wanted to share some exciting new work our lab just published in
> Geophysical Research Letters, “Heterotrophy of Oceanic Particulate Organic
> Matter Elevates Net Ecosystem Calcification”, led by Dr Andrea Kealoha.
> The full citation, abstract, and plain language summary are below.
>
> Katie Shamberger
>
> link to paper:
> https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019GL083726
>
> Kealoha A.K., Shamberger K.E.F., Reid E., Davis K.A., Lentz S.J., Brainard,
> R., Oliver T., Rappe M., Roark E.B., Rii S. 2019. Heterotrophy of oceanic
> particulate organic matter elevates net ecosystem calcification.
> Geophysical Research Letters. https://doi.org/10.1029/2019GL083726
>
> Abstract
> Coral reef calcification is expected to decline due to climate change
> stressors such as ocean acidification and warming. Projections of future
> coral reef health are based on our understanding of the environmental
> drivers that affect calcification and dissolution. One such driver that may
> impact coral reef health is heterotrophy of oceanic‐sourced particulate
> organic matter, but its link to calcification has not been directly
> investigated in the field. In this study, we estimated net ecosystem
> calcification and oceanic particulate organic carbon (POCoc) uptake across
> the Kāne'ohe Bay barrier reef in Hawai'i. We show that higher rates of
> POCoc
>  uptake correspond to greater net ecosystem calcification rates, even under
> low aragonite saturation states (Ωar). Hence, reductions in offshore
> productivity may negatively impact coral reefs by decreasing the food
> supply required to sustain calcification. Alternatively, coral reefs that
> receive ample inputs of POCoc may maintain higher calcification rates,
> despite a global decline in Ωar.
>
> Plain Language Summary
> Coral reefs are threatened by climate change stressors including ocean
> acidification and ocean warming. One way to measure and monitor coral reef
> health is to estimate coral reef calcification, which is influenced by
> several environmental factors including light, temperature, pH, and
> nutrient availability. By understanding the effects of these factors on
> calcification, we can better predict how corals will respond to climate
> change. One potentially important factor for calcification that has not
> been investigated in the field is coral reef ecosystem feeding on
> particulate organic matter supplied from offshore (i.e., oceanic
> particulate organic matter). In this study, we estimated net ecosystem
> calcification and oceanic particulate organic carbon (POC) uptake across
> the Kāne'ohe Bay barrier reef in Hawai'i. For the first time, we show a
> direct correlation between net ecosystem calcification and oceanic POC
> uptake, which suggests that the reef is using oceanic POC as an energy
> source to elevate calcification. However, since climate change reduces
> oceanic POC production through warming and stratification, our results
> imply coral reef calcification may decline. Alternatively, coral reefs
> located in regions of high oceanic productivity and that sustain greater
> rates of oceanic POC uptake may be able to maintain calcification longer
> into the future.
>
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Kathryn E. F. Shamberger
> Assistant Professor
> Department of Oceanography
> Texas A&M University
> College Station, TX 77843
> 1-979-845-5752
> katie.shamberger at tamu.edu
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> _______________________________________________
> Coral-List mailing list
> Coral-List at coral.aoml.noaa.gov
> https://coral.aoml.noaa.gov/mailman/listinfo/coral-list



-- 
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Ibrahima DIACK,
Personal contact of AOLN in Senegal
member of the OA-Africa network
*Cell:* (+221) 708467870 / 781001819
BP: 5085 Dakar-Fann.
E mail: *diack.ib at gmail.com <diack.ib at gmail.com>*
skype*:* *diack.ibrahima.*
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