Project Overview: This PhD project at the University of Southampton addresses the profound, millennial-scale impacts of anthropogenic climate change on marine ecosystems. While most climate research focuses on the next century, this project integrates climate modelling and quantitative ecology to explore how ocean biodiversity will be affected over the next 1,000–100,000 years. The research aims to inform stewardship-focused conservation strategies that consider the long-term legacy of greenhouse gas emissions. Research Focus: The student will use Earth system models of intermediate complexity to investigate long-term climate trajectories under various emissions scenarios. The project will evaluate how these trajectories interact with current patterns of ocean biodiversity and conservation strategies. By integrating ocean modelling with analytical frameworks for marine biodiversity, the research will provide new insights into the persistence of ocean warming and its influence on global biodiversity. The interdisciplinary nature of the project welcomes applicants from marine biology, Earth science, palaeobiology, climate science, oceanography, and related fields. Training and Development: The IGNITE programme offers comprehensive personal and professional development, including training in computer programming (R/Python), data science, Earth system modelling (e.g., cGENIE, HADCM3L, CESM, PLASIM), quantitative macroecology, ecophysiological and evolutionary modelling, ecological niche modelling, climate model output analysis, and scientific communication. Students will benefit from a wide network of academic, research, and industrial/policy partners. Funding: The IGNITE Doctoral Landscape Award provides 3.5 years of funding, including a tax-free stipend at the UKRI standard rate (£20,780 for 2025/26), full Home tuition fees, and a waiver for the difference between Home and International fees. A Research Training Support Grant of £2,200 per year (£7,700 total) is available for project costs, conferences, and training. Eligibility: Applicants must have a UK bachelor’s degree with upper second-class honours or higher in a relevant subject, or an international equivalent. English language proficiency is required (IELTS 6.5 overall, minimum 6.0 in all components, or equivalent). The programme encourages applications from diverse backgrounds and offers a guaranteed interview scheme for qualifying UK applicants from racially minoritised backgrounds. Application Process: Applications must be submitted by 11:59pm on 8 January 2026. Prospective students are advised to contact the lead supervisor to discuss suitability before applying. Applications should be tailored to one project, with a maximum of two allowed. Both UK and international students are eligible, but international studentships are limited to 30% of awards. References: Key literature includes Tierney et al. (2020), Deutsch et al. (2024), and Pinsky et al. (2013), providing foundational context for the project’s research questions. For more information, visit the project page or contact the IGNITE DLA team at nerc-dla@soton.ac.uk .