Second Institute of Oceanography

Asymmetric bloom lengthening drives high-latitude ocean chlorophyll accumulation imbalance

Terrestrial ecosystems maintain a stable time-allocation budget between growth and senescence, but whether this applies to the ocean remains unclear. Using fused satellite LiDAR and ocean-color data (2007–2022), we show that marine phenology is variable and asymmetric. In high la...

Bacterial Diversity and Community Assembly in Deep-Sea Sediments: Observations from the Philippine Sea

Microorganisms are important components of marine ecosystems and are widely distributed across global marine sediments. Although studies on microbial communities in deep-sea sediments have been increasing worldwide, research in the Philippine Sea is still at an early stage. In th...

Pronounced megafaunal community transition driven by polymetallic nodule cover in the Northwest Pacific abyss

Polymetallic nodules provide essential hard substrata for benthic fauna and are widely assumed to enhance biodiversity on abyssal plains. Yet, our understanding of how nodule cover shapes megafaunal communities remains limited and largely restricted to low nodule cover conditions...

Strong tropical cyclones have a more gradual increase trend through interaction with ocean subsurface

Understanding changes in global tropical cyclone (TC) intensity and their long-term trends is critical for enhancing societal resilience. Given their disproportionate impacts, shifts in strong TCs, which are defined here as Category 4 and above, are of particular concern. We exam...

Diverse microbial communities support multiple patterns of functional redundancy in tidal flats across the Chinese coastline

Tidal flats are critical transitional ecosystems in which microbial communities drive essential biogeochemical processes while adapting to strong environmental fluctuations. However, the mechanisms by which these communities maintain functional stability in highly dynamic tidal-f...

Emerging nitrogen-driven urban atmosphere control on aerosol iron dissolution for biogeochemical cycles

Iron (Fe) is a critical micronutrient regulating marine productivity and the global carbon cycle, yet its atmospheric dissolution mechanisms remain debated for biogeochemical cycle. The prevailing “iron-sulfur coupling” paradigm has traditionally explained proton-promoted dissolu...

Wintertime organic carbon export provides a potential food source for zooplankton in the High Arctic

Abstract Pulsed particulate organic carbon export plays a vital role in sustaining Arctic marine ecosystems and the biological pump. Wintertime particulate organic carbon export in ice-covered Arctic waters is generally considered negligible due to light-limited local primary pro...