“The number of living creatures of all orders, whose existence intimately depends on the kelp, is wonderful.” 

– Charles Darwin (1839)
Photo Credit: M. Ward

1. How do elevated CO2 and temperature influence the development of the Giant Kelp, Macrocystis pyrifera?

In addition to being key players in the coastal carbon system, kelps provide habitat for several commercially and ecologically important species. As a member of SDSU’s Edwards Lab, I explored how their growth and survival at vulnerable, early life stages were impacted by climate change conditions.

Publications

Shukla, P. and Edwards, M. S. Elevated pCO2 ameliorates the negative effects of increased temperature on microscopic life stages of the giant kelp, Macrocystis pyrifera (Phaeophyceae, Laminariales). In Revisions.

Conference Abstracts

Shukla, P., Brown, M.B., and Edwards, M.S. 2015. Impacts of elevated pCO2 and temperature on multiple life stages of the giant kelp. 96th Western Society of Naturalists Conference, Sacramento, CA. (Oral)

Shukla, P. and Edwards, M.S. 2015. Elevated CO2 concentrations facilitate development in microscopic life stages of Macrocystis pyrifera. 44th Annual Benthic Ecology Meeting, Québec City, Canada. (Oral)

Shukla, P. and Edwards, M.S. 2014. Elevated CO2 concentrations facilitate development in microscopic life stages of Macrocystis pyrifera. 95th Western Society of Naturalists Conference, Tacoma, WA. (Oral)

Shukla, P. and Edwards, M.S. 2013. Characterizing the effects of climate change on photosynthesis for embryonic and juvenile sporophytes of Pterygophora californica and Laminaria farlowii. 94th Western Society of Naturalists Conference, Oxnard, CA. (Poster)

Shukla, P. and Edwards, M.S. 2013. Characterizing the effects of climate change on photosynthesis for embryonic and juvenile sporophytes of Pterygophora californica and Laminaria farlowii. 22nd Biennial Conference of the Coastal and Estuarine Research Federation, San Diego, CA. (Poster)


2. How does elevated CO2 affect habitat-forming coralline algae (‘rhodoliths’) and associated microbes?

I collaborated with a visiting student in the Dinsdale Lab at SDSU studying rhodolith communities off of Catalina Island. Rhodoliths are free-living calcareous red algae that create complex habitat for a wide array of species. We sought to understand how ocean acidification affects microbial communities on the rhodolith holobiont and the ambient seawater.

Publications

Cavalcanti, G. S., Morris, M., Shukla, P., Ribeiro, B., Foley, M., Doane, M., Leomil, L., Thompson, C., Edwards, M. S., Dinsdale, E. A., and Thompson, F. L. Effects of water acidification on coralline red algae rhodolith microbiome in mesocosms. In Review, Global Change Biology.

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