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Human impacts on ecosystems

Humans tend to use the environment in two ways: we either take resources from the ocean, such as in fishing, or we use the environment to dispose of our waste, such as nutrient pollution and CO2 emissions which lead to climate change.

 

It is not enough to show how we damage the ocean with our activities, but rather that we need to provide information on how we can both improve the environment by changing policy and activities and also sustainably develop our use of the ocean’s resources.

Transgenerational Adaptation of Intertidal Copepods to Global Change 

This project examines the influences of global climate change derived multi-stressors on the physiology and adaptation mechanisms of an intertidal copepod. It aims to understand how these organisms will adapt to climate change through multi-generations. The project also develops new methods of examining transgenerational adaptation by implementing environmental rate of change and environmental variability.   

Impact of Heatwaves and Ocean Acidification on Subtidal Gastropods

The rapid increase of global temperature, resulting from anthropogenic greenhouse gas emmisions, is increasing the frequency of extreme events such as heatwaves. Coupled with an acidifying ocean, an increasing amount of stress is being imposed on marine organisms. This project is examining the potential for short-term acclimation and the impacts of multi-stressors on subtital grazing gastropods. 

Thermal Plasticity and Local Adaption of Marine Herbivores

This biogeographic study assesses the physiological ability of various populations of sea urchins to tolerate thermal stress. Environmentally stable tropical populations (Thailand) are compared to more variable (Hong Kong) and extreme (Japan) populations under similar thermal conditions to assess thermal plasticity. Transcriptomic analysis will provide an insight into the adaptation of populations to local conditions. Understanding the limits of urchin thermal plasticity and potential adaptations will provide insight into future urchin distributions and their functions within the ecosystem, in a warming ocean.

Seasonal cycle of Sargassum hemiphyllum ; the role of microbial communites and nutrient gradients

In the Northwest Pacific, the seasonal monsoon contributes to the senescence of habitat-forming algal species in spring and summer, leading to accumulation of algal biomass on the soft benthos. However, little is known about the fate of this seasonal detrital material or the microbial community that directly decomposes this algal matter. As Sargassum is one of the most important coastal algal genera occupying a wide geographic area along the coast of multiple east Asian countries, characterizing microbial communities that use the same algal resource and understanding any changes and differences may shed lights on the ecological role of both the macroalgae and the microbial community in these systems.