The Arabian Seas provide a sentinel system for understanding how global Planetary Boundary transgressions manifest through regional ocean processes. Their rapid warming, altered circulation, declining ventilation, deoxygenation, acidification, and ecological reorganization reveal interconnected regional manifestations of pressures associated with the Climate Change, Biogeochemical Flows, Ocean Acidification, and Biosphere Integrity boundaries. Regional physical and biogeochemical amplification compresses the timescale over which these pressures become ecologically consequential, exposing regional responses and increasing risks of regime shifts. Although the Arabian Seas possess distinctive environmental characteristics, the mechanisms linking planetary forcing to regional change are broadly relevant to other tropical and marginal oceans. Their present trajectory therefore provides a conditional, mechanism-based analogue for selected processes expected to intensify across future tropical open-ocean and marginal-sea environments. This illustrates how multiple global boundary transgressions may interact to weaken regional resilience and reorganize marine ecosystem function.
The Gulf of Maine and the surrounding Northeast US Continental Shelf are experiencing rapid marine environmental change arising from complex regional dynamics that challenge near-term (1–10 years) predictive capabilities for valuable living marine resources. Here, using a high-resolution regional ocean model, we demo...
V. Koul, Andrew C. Ross, C. Stock et al.· Ocean Science (OS)· 0 citations
Artificial upwelling has long been recognized as a potential approach for enhancing marine productivity, supporting coastal ecosystems, and mitigating some consequences of global warming. By transporting cold, nutrient-rich deep sea water toward the upper ocean, artificial upwelling may contribute to reducing local sea...
M. Daei, B. Daei, Behrooz Daei et al.· Frontiers in Marine Science· 0 citations
Acceleration, rather than a gradual linear response, is emerging as a defining feature of ocean change in the Anthropocene. Surface‐forced warming propagates into the deep ocean over decades to centuries, but semi‐enclosed basins such as the Mediterranean Sea may respond more rapidly. Here, we analyse an in situ Medite...
Elena Terzić, I. Vilibić· Geophysical Research Letters· 1 citation
The Alaska subpolar gyre is a high-nutrient, low-chlorophyll system in which offshore productivity depends on exchange with iron- and macronutrient-rich coastal waters. Mesoscale eddies are the primary mechanism for export of nutrient-rich coastal waters offshore, and their formation is strongly linked to large-scale...
É. Beaudin, E. Di Lorenzo, Mara A. Freilich et al.· Journal of Physical Oceanogr...· 0 citations
The tropical Pacific plays a pivotal role in global climate, and changes in its mean state and in the El Niño Southern Oscillation can substantially alter regional hydroclimates with major economic and societal impacts. Yet, its response to different emission pathways remains poorly constrained. Here we assess changes...
Aditya Sengupta, A. King, Josephine R. Brown et al.· Communications Earth & Envir...· 0 citations
Coastal benthic ecosystems are shaped by the combined effects of climate change and anthropogenic pressures. Ocean warming, acidification, and deoxygenation interact with eutrophication, pollution, bottom trawling, and coastal development, altering biodiversity, habitat structure, and functioning from shallow coasts to...
E. K. Rohlfer, Anna Fiesinger· Frontiers in Marine Science· 0 citations
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