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PhD Student

Julia Mayer

Julia Mayer

PhD Candidate in Oceans and Fisheries, University of British Columbia   
MSc Geography, University of British Columbia
BSc Geography and Environmental Science, The University of Dundee, UK 
Contact     

https://oceans.ubc.ca/2023/06/01/mayer-julia/


Spectral Lab Research:

Julia’s PhD project, a collaboration between UBC’s Changing Oceans Research Unit, UVic’s Spectral Remote Sensing Laboratory, and Ocean Wise, investigates the potential for kelp seaforestation in British Columbia under climate change. Using an ensemble of species distribution models, Julia estimates future kelp distributions and identifies refugia under different climate change scenarios. Taking into account ecosystem services, she focusses on determining potential conflicts and synergies between human activities and these predicted kelp refugia. Her findings directly inform the NGO Ocean Wise in their seaforestation efforts by enabling informed decisions on restoration sites that support the long-term success of these projects.


Background:

Julia has a background in oceanography, climate science, and coastal ecosystems. Her MSc thesis assessed past extreme wave events in Tarawa (Republic of Kiribati) and examined the potential vulnerability of its shorelines to sea-level rise and coral reef degradation. The findings provided a rare insight into the differences in vulnerability between lagoon-facing and open-ocean-facing shorelines of atolls during inundation events.

Outside work, Julia is passionate about exploring British Columbia’s diverse landscape. She is an avid runner, hiker, backpacker, and diver.


Expertise and Experience:

coastal ecosystems, species distribution modelling, climate change, kelp restoration


Alyssa Allchurch

Alyssa Allchurch

PhD Candidate in Resource and Environmental Management,
Simon Fraser University
MSc Resource & Environmental Management, Simon Fraser University  
BA, Western University     
Contact    


Spectral Lab Research:

For her PhD, she is a part of the kelp-encrusting bryozoan (KEB) team, a project co-lead by Dr. Anne Salomon at Simon Fraser University and Dr. Maycira Costa at UVic. The project focuses on understanding the spatial and temporal drivers of kelp encrusting bryozoans up and down the BC coast. She investigates the ecological drivers of KEB in kelp forests, with a focus on the benthic kelp communities.


Background:

Alyssa is a coastal ecologist with a passion for nearshore ecosystems. She was raised on the prairies in Treaty 7 territory, where her family first settled four generations ago (from Ukraine & Britain). Her work on kelp-human relationships focuses on co-produced, community-based research that upholds diverse knowledge forms and Indigenous governance. She earned her Masters in Resource Management in 2023, where she worked alongside the Kwakiutl Nation to better understand how commercial kelp harvest was affecting kelp forests in Kwakiutl territory and how those kelp forests were reacting and recovering after harvest. Formerly she worked for a non-profit that focused on increasing the capacity and skillsets of marine managers globally to initiate conservation and management action in their communities. Broadly, her PhD explores how ecological interactions, traditional and experimental management practices, and climate-adaptive policy can collectively enhance the resilience of kelp forests to climate change. She is at her happiest when diving through a kelp forest, running down a beach or teaching someone a cool ocean fact.


Expertise and Experience:

ecological modelling, social ecological systems, kelp forest resilience, climate solutions, mariculture


Publications:

Starko, S., A. Allchurch, Neufeld, C. 2025. Asynchronous shifts in the demographics of two wave-swept kelp species (Laminariales) after nearly four decades. Journal of Phycology 61, 250-254.

Mehrotra, R., A. Allchurch, C. Monchanin, C. M. Scott. 2022. Recruitment of hard coral communities on giant clam shells (Cardiidae: Tridacna) differ from surrounding reef habitats at a tourist destination in the Gulf of Thailand. Journal of Molluscan Studies 88 (4), eyac031.

Allchurch, A., R. Mehrotra, H. Carmody, C. Monchanin, C. M. Scott. 2022. Competition and epibiosis by the sponge Pseudoceratina purpurea (Carter, 1880) on scleractinian corals at a tourism hotspot in the Gulf of Thailand. Regional Studies in Marine Science 49, 102131.

Mehrotra, R., A. Allchurch, C. Monchanin, C. M. Scott. 2021. Assessment of spatiotemporal variability of giant clams (Cardiidae: Tridacna) from 11 years of monitoring at Koh Tao, Thailand. Journal of Molluscan Studies 87 (4), eyab042.

Monchanin, C., R. Mehrotra, E. Haskin, C. M. Scott, P. U. Plaza, A. Allchurch, S. Arnold, K. Magson, B. Hoeksema. 2021. Contrasting coral community structures between natural and artificial substrates at Koh Tao, Gulf of Thailand. Marine Environmental Research 172, 105505.*
*December 2021 Editors Choice Article  

Kaullysing, D., R. Mehrotra, S. Arnold, S. Ramah, A. Allchurch, E. Haskin, N. Taleb-Hossenkhan, R. Bhagooli. 2020. Multiple substrates chosen in mass in situ egg deposition by Drupella in Mauritius, a first record for the western Indian Ocean­­­. Journal of Molluscan Studies 86 (4), 427-430.



Ziwei Wang

PhD. Student

PhD Candidate in Geography, University of Victoria
MSc Planetary Geology, China University of Geosciences, Wuhan
BSc Geology, China University of Geosciences, Wuhan
Contact

I received my master’s degree in planetary remote sensing at the China University of Geosciences (Wuhan). 

I have come to UVic for my PhD studies at the Spectral Lab and will be focusing on ocean remote sensing.  

Research Project

For my PhD research I will collecting in situ optical and biogeochemical samples of the surface waters in the Salish Sea using an instrumented BC Ferry and relate this information to data acquired by our autonomous radiometer systems.  More information about my project can be found here.  

Sarah Schroeder

Lab Technician, USRA

PhD Candidate in Geography, University of Victoria
MSc Geography, University of Victoria
BSc Biology, University of Victoria

 

In summer 2016, we acquired two satellite images covering Cowichan Bay and the Gulf Islands, at the same time that three groups of volunteers from Pender Island Conservancy, Mayne Island Conservancy, and Cowichan land trust led by Leanna Boyer from Sea Change mapped the exact location of kelp beds using kayaks and GPS. From this data we are able to ground truth what we define as kelp in the satellite images.

 

 

 

 

In the spring and summer of 2017, in situ surveys of kelp beds were conducted to understand how juvenile salmon from the Cowichan River use kelp bed habitats as they migrate north.

Snorkel survey and remote underwater video was used to compare the use of kelp beds to adjacent no kelp habitat.