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Risk Assessment and Ecotoxicology:Limitations and Recommendations for Ocean Disposal of Mine Waste in the Coral Triangle
Risk Assessment Ecotoxicology:Ocean Disposal Mine Waste Coral Triangle
2015/7/15
Mining is an important contribution to the economy of many developing tropical regions. Many sites of mining interest in the tropics have island geographies and potentially limited land area. While th...
Iron and copper limitations differently affect growth rates and photosynthetic and physiological parameters of the marine diatom Pseudo-nitzschia delicatissima
Iron and copper limitations differently affect growth rates photosynthetic and physiological parameters marine diatom Pseudo-nitzschia delicatissima
2014/4/2
In ～ 50% of the ocean, iron (Fe) limits phytoplankton growth, including that of the diatom Pseudo-nitzschia. Fe-limited Pseudo-nitzschia spp. may produce the potent neurotoxin domoic acid (DA) to acce...
Dispersal limitations and history explain community composition of metaphyton in desert springs of the Bonneville Basin, Utah: A multiscale analysis
Dispersal limitations history metaphyton desert springs Bonneville Basin Utah multiscale analysis
2014/4/18
We examined patterns of metaphyton community composition from 150 sites in spring wetlands of the Bonneville Basin across three spatial scales: valleys, wetlands nested in valleys, and habitat types n...
Valuable mineral resources are widely distributed throughout the seabed. autonomous underwater vehicles (AUVs) are preferable to remotely-operated vehicles (ROVs) when probing for such mineral resources as the extensive exploration area makes it difficult to maintain contact with operators. AUVs depend on batteries, so their power consumption should be reduced to extend exploration time. Power for conventional marine instrument systems is incorporated in their waterproof sealing. External intermittent control of this power source until termination of exploration is challenging due to limitations imposed by the underwater environment. Thus, the AUV must have a power control system that can improve performance and maximize use of battery capacity. The authors developed such a power control system with a three-step algorithm. It automatically detects underwater operational states and can limit power, effectively decreasing power consumption by about 15%.
surface piercing propeller boundary element method hydrodynamic characteristics
2011/9/13
Demand for high-speed marine vehicles (HSMVs) is high among both commercial and naval users. It is the duty of the marine vessel’s designer to provide a hull and propulsion system that diminishes drag...
Zooplankton recovery after fish removal: Limitations of the egg bank
Zooplankton recovery bank
2014/5/16
The Allee effect, operating via mate limitation, theoretically reduces the probability of recovery from local
extinction of dioecious zooplankton relative to species that can reproduce asexually. We ...
Trophic relationships among Southern Ocean copepods and krill: Some uses and limitations of a stable isotope approach
Southern Ocean copepods kril
2014/5/20
The use of stable isotopes to study food webs has increased rapidly, but there are still some uncertainties in their
application. We examined the d
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N and d
13
C values of Antarctic euphausiids...