Drivers of biogeochemical variability in a kelp forest in southern Monterey Bay and beyond – January 23rd

Yui Takeshita, Monterey Bay Aquarium research Institute
Moss Landing Marine Labs Seminar Series - January 23rd, 2020

Hosted by The Chemical Oceanography Lab

MLML Seminar Room, 4pm

Open to the public

Submerged aquatic vegetation such as seagrass beds and kelp forests have been proposed as a potential strategy to locally ameliorate impacts of ocean acidification. However, kelp forests are known to thrive in highly dynamic systems, where chemical conditions are controlled by a complex interaction of physical and biological drivers. Thus, in order to accurately assess the potential and limitations for this strategy, we must first quantify the underlying natural processes that drive its variability. In this talk, I will present a paired-mooring experiment conducted in the summer of 2018 where a mooring was deployed inside and outside of the kelp forest right outside of Hopkins Marine Lab. The moorings were instrumented with pH and O2 sensors that provided high vertical resolution. The results will be discussed in the context of this kelp forest's potential to curb acidification stress, and how this site compares to others along the California coast. 

My main research interests are focused on developing and applying new autonomous biogeochemical sensing technology. I use these new instruments to study various marine processes, especially in the coastal ocean where impacts of ocean change are felt most strongly by society. For example, we have used moored instrumentation to make habitat specific ocean acidification predictions in Southern California, and developed benthic flux systems to measure net calcification rates on coral reefs as a proxy for reef health. Currently our group is working on improving benthic flux systems for long term, sustained measurements; studying high frequency dynamics in coastal systems such as coral reefs, kelp forests, and sea grass beds; operating pH sensors on underwater gliders; and refining our thermodynamic model of CO2 chemistry in seawater to establish robust calibration protocols for pH sensors on autonomous sensor networks such as gliders and profiling floats. 

I have been a scientist at MBARI since 2017. I received my Ph.D. at the Scripps Institution of Oceanography at UC San Diego under Todd Martz, and did a postdoc under Ken Caldeira at the Carnegie Institution for Science 

I also hold an adjunct faculty position in the Ocean Sciences (link: department at the University of California Santa Cruz. 












Climate change impacts on kelp forest ecosystems on the California Current region – February 6th

Fiorenza Micheli, Hopkins Marine Station
Moss Landing Marine Labs Seminar Series - February 6th, 2020

Hosted by The Phycology Lab

MLML Seminar Room, 4pm

Open to the public

~More information to come~



Fiorenza Micheli is a marine ecologist and conservation biologist conducting research and teaching at the Hopkins Marine Station of Stanford University, where she is the David and Lucile Packard Professor of Marine Science and the co-director, with Jim Leape, of Center for Ocean Solutions ( Micheli’s research focuses on the processes shaping marine communities and incorporating this understanding in the management and conservation of marine ecosystems. Her current research projects investigate social and ecological drivers of the resilience of small-scale fisheries to climatic impacts in Baja California, Mexico, the ecological and socioeconomic impacts of coastal hypoxia and ocean acidification in the California Current large marine ecosystem, the ecological role and spatial ecology of parrotfish and reef sharks in the coral reefs of the Pacific Line Islands, the effects of ocean acidification on seagrass, rocky reef and kelp forest communities, and the performance and management of marine protected Areas in the Mediterranean Sea. She is a Pew Fellow in Marine Conservation, a fellow of the California Academy of Sciences, and senior fellow at Stanford’s Woods Institute for the Environment.

Watch Fiorenza’s MLML Seminar Presentation Below: