Summary
Marine and estuarine ecology examines how physical dynamics, chemical gradients and biological interactions shape organisms from microbes to megafauna in coastal and open‐water environments. Estuaries, where rivers meet the sea, are hotspots of productivity and nutrient recycling, while submerged seagrass meadows and coral reefs form habitat-forming communities that sustain fisheries and biodiversity. Planktonic assemblages underpin pelagic food webs, mediating the flow of carbon between surface waters and the deep ocean. Benthic ecosystems—from wave-swept rocky shores to sheltered mudflats and sandy beaches—support specialised invertebrates, fish nurseries and migrating waterbirds. Mangroves and saltmarshes buffer coastlines against storms, sequester carbon and provide breeding grounds for shorebirds. Anthropogenic pressures—including coastal development, overfishing, pollution and climate‐driven acidification and warming—disrupt these systems, demanding integrated management strategies that balance conservation with sustainable use.
Research from Nature Portfolio
Global enrichment experiments identify that ocean phytoplankton are frequently co-limited by multiple nutrients. Synthesis of nutrient-addition data shows that while nitrogen or iron each dominates in different regions, zones of dual nitrogen–iron limitation are widespread, and manganese, cobalt or phosphate co-limitation emerges in high‐latitude waters.
Diel plankton surveys in tropical seas reveal night-time peaks of large aloricate ciliates in the upper 200 m, contrasted by daytime dominance of smaller tintinnid lorica sizes. Depth, temperature and chlorophyll a drive these daily vertical redistributions, refining our understanding of microzooplankton dynamics in the South China Sea and Western Pacific.
Marine and Estuarine Ecology publication trend
The graph below shows the total number of articles in marine and estuarine ecology across all publications each year (not limited to Nature Index journals).
Technical terms
Co-limitation: Simultaneous limitation of marine primary productivity by two or more essential nutrients.
Aloricate ciliates: Heterotrophic microzooplankton lacking external lorica, important consumers in pelagic food webs.
Tintinnids: Lorica-bearing ciliates whose shell openings indicate prey‐size selection and feeding capacity.
Bergmann’s rule: The ecological principle that organism body size increases with decreasing environmental temperature.
Environmental DNA (eDNA): Genetic material shed by organisms into water, enabling non-invasive detection of biodiversity.
Proton-pumping rhodopsins: Retinal photoproteins that create proton gradients for energy under low-iron conditions.
References
- Global analysis of ocean phytoplankton nutrient limitation reveals high prevalence of co-limitation. Nature Communications (2023).
- Diel variations in planktonic ciliate community structure in the northern South China Sea and tropical Western Pacific. Scientific Reports (2023).
- Do marine planktonic ciliates follow Bergmann's rule?. Ecography (2023).
- Microbial Community Colonization Process Unveiled through eDNA-PFU Technology in Mesocosm Ecosystems. Microorganisms (2023).
- Marine Ecosystems.
About these summaries
This Nature Research Intelligence Topic summary is created with the cited references and a large language model. We take care to ground generated text with facts, and have systems in place to gain human feedback on the overall quality of the process in line with our AI principles. We strive to create accurate and useful summaries for people unfamiliar with the research topic and that supports this goal. These pages are a beta release and will be updated as we learn how best to help people gain value from a research topic summary.
Do you find the topic summary accurate and helpful?
Explore more topics in Marine and Estuarine Ecology
Turn complex research questions into confident strategic decisions
When you're under pressure to set direction, justify investment, or understand your competitive position, you need more than raw data — you need trusted insights you can act on.
Benchmark your performance against global peers using robust, methodologically sound analysis.
Combine quantitative metrics with qualitative expert insight to uncover strengths, gaps and emerging opportunities.
Gain tailored, decision-ready recommendations aligned to your strategic priorities.
Talk to us to learn more about our data dashboards and bespoke strategy reports.
Grow research skills, confidence and careers with training built for every stage of the research lifecycle.
Developed with Nature Portfolio journal Editors and internationally renowned experts. Discover three ways to learn:
Self-paced, online courses in convenient bite-sized units, covering key skills across scientific writing, publishing, grant writing, data analysis, and more.
Expert trainer-led workshops with hands-on exercises and real-time feedback across core research skills, delivered via interactive group sessions.
Editor-led workshops combining core principles in writing and publishing, personalised 1:1 feedback from Nature Portfolio Editors and hands-on exercises.
Explore course catalogues and workshop agendas, enquire about the options or request institutional pricing.