Accurate models of species distributions in mountainous ecosystems are essential for effective conservation, yet reliance on open‑access medium‑resolution elevation products often obscures fine‐scale habitat heterogeneity critical for wildlife. We evaluated whether high‐resolution digital surface models (DSMs) (≤1 m) based on data from an unmanned aerial vehicle (UAV) enhanced species distribution models (SDMs) relative to med...

Safe exploitation of the marine natural gas hydrate (NGH) resource is essential to meet the demand of the future energy requirement. To enable real-time monitoring of methane leakage during the production test of NGH, an ocean stereoscopic monitoring system based on underwater single-point mooring structure is developed, which supports in situ monitoring of marine environment at the sea-air interface, the euphotic zone, and th...

Based on on-site survey data from 26 stations in the surface seawater of Zhanjiang Bay in April (spring), July (summer), September (autumn), and December (winter) of 2017, the spatial distribution characteristics of chlorophyll a (Chl a ) and nutrients in the surface seawater of Zhanjiang Bay in different seasons were analyzed, and the regulatory mechanism of chlorophyll a spatiotemporal changes was discussed. The results show...

The Arabian Sea is a significant hypoxic region in world’s oceans, characterized by the most extensive oxygen minimum zones (OMZs). Both physical and biological processes can alter the vertical and horizontal distribution of dissolved oxygen within the upper ocean and affect the spatial and temporal distribution of hypoxia within the OMZ. To identify the key physical and biological factors influencing the boundaries of oxyclin...

Based on the optical properties of water constituents, the vertical variation of photosynthetically available radiation (PAR) can be well modeled with hyperspectral resolution; the intensive computing load, however, demands simplified modeling that can be easily embedded in marine physical and biogeochemical models. While the vertical PAR profile in homogeneous waters can now be accurately modeled with simple parameterization,...

This study investigated the total concentrations and geochemical compositions of metals (Cd, Cr, Cu, Ni, Pb, Zn, Fe and Mn) in surface sediments of Zhanjiang Bay (ZJB) in spring and summer, to assess the contamination status, mobility and influencing factors of spatial-seasonal changes of these metals. The average total concentration for each studied metal in the surface sediments of ZJB was 0.173 μg/g for Cd, 58.25 μg/g for C...

Despite the well-recognized importance in understanding the long term impact of anthropogenic release of atmospheric CO 2 (its partial pressure named as p CO 2 air) on surface seawater p CO 2 ( p CO 2 sw), it has been difficult to quantify the trends or changing rates of p CO 2 sw driven by increasing atmospheric CO 2 forcing ( p CO 2 sw atm_forced ) due to its combination with the natural variability of p CO 2 sw ( p CO 2 sw...