论文/学位论文答辩

Good morning, everyone. Thank you for being here. My dissertation research focuses on 'The Impact of Climate Change on Antarctic Krill Populations.'

Good morning. Thank you for that overview. Could you elaborate on your methodology for data collection in such a challenging environment?

Certainly, Professor. We primarily utilized a combination of acoustic surveys and net sampling. The acoustic data provided insights into spatial distribution, while net sampling allowed for a more detailed analysis of krill size and age structure.

Interesting. And how did you address potential biases in your sampling, particularly given the dynamic nature of krill swarms?

That's a crucial point, Professor. We employed a stratified random sampling approach across different depths and times of day, aiming to minimize spatial and temporal biases. We also used statistical weighting to account for variations in sampling effort.

Your findings suggest a significant decline in krill populations. What are the broader ecological implications of this trend, beyond just the krill themselves?

The implications are profound, Professor. Krill are a keystone species in the Antarctic ecosystem. Their decline would inevitably impact predators like penguins, seals, and whales, potentially leading to cascading effects throughout the food web.

Thank you. Your presentation was very clear and your responses insightful. We will now take some time to deliberate.