Space, the final resource

2020 ◽  
pp. 183-200
Author(s):  
S. Kim Juniper ◽  
Kate Thornborough ◽  
Paul Tyler ◽  
Ylenia Randrianarisoa
Keyword(s):  
Deep Sea ◽  
Industrial Waste ◽  
Sea Water ◽  
Natural Capital ◽  
Deep Ocean ◽  
Empty Space ◽  
Waste Streams ◽  
Near Term ◽  
Minimal Environmental Impact ◽  
Solid Liquid

The greater than 109 km3 volume of the deep-sea water column and greater than 300 × 106 km2 area of the deep-sea floor represent a major natural capital asset. Global society has been utilising space in the deep ocean as a reservoir for solid, liquid, and hazardous waste produced by terrestrial-based societies, as a buffer that absorbs nonsolid, nonliquid industrial waste streams, specifically CO2 from fossil fuel and biomass burning, heat from a warming atmosphere, and as freely available and convenient space. High-value uses such as the deployment of transoceanic telecommunications cables provide substantial, near-term economic and societal returns with minimal environmental impact. Low-value uses of this natural capital as empty space to absorb waste have arguably enabled industrialisation to continue further along an unsustainable trajectory than would have occurred had there been no such waste buffer available.

A holistic vision for our future deep ocean

2020 ◽  
pp. 201-206
Author(s):  
Eva Ramirez-Llodra ◽  
Maria Baker ◽  
Paul Tyler
Keyword(s):  
Deep Sea ◽  
Natural Capital ◽  
Synergistic Effects ◽  
Deep Ocean ◽  
Scientific Data ◽  
National Jurisdiction ◽  
Industrial Solutions ◽  
Sound Management ◽  
Holistic Vision

Healthy oceans are essential to maintain a healthy planet, but the ocean is facing many challenges that need urgent attention. Robust scientific data and innovative technological, policy, and industrial solutions are essential to support sound management of the deep-ocean natural capital, both within and beyond national jurisdiction, to ensure future healthy and productive oceans. As with many systems on Earth, there is a delicate ecological balance in the deep ocean that must be maintained. Understanding the interactions of the different components of natural capital in the deep sea is complex, as many of the variables are interlinked and many have cumulative and synergistic effects on the ecosystem. Add to this the global and changing effects of climate change and ocean acidification, and legislators and managers have a tough job ahead to account for all of these issues when designing appropriate conservation measures. It is important that scientists work hand in hand with multiple stakeholders to identify issues and research needs that contribute to enhancing knowledge and the science needed for decision-making to help towards securing a healthy future for our deep-ocean ecosystems and their long-term natural capital.

scholarly journals Biodegradation of several fibers submerged in deep sea water and isolation of biodegradable plastic degrading bacteria from deep ocean water

2009 ◽  
Vol 75 (6) ◽  
pp. 1011-1018 ◽  
Author(s):  
TAKAYOSHI SEKIGUCHI ◽  
AKIRA EBISUI ◽  
KOJI NOMURA ◽  
TOSHIHIRO WATANABE ◽  
MAKIKO ENOKI ◽  
...  
Keyword(s):  
Deep Sea ◽  
Sea Water ◽  
Deep Ocean ◽  
Biodegradable Plastic ◽  
Ocean Water ◽  
Deep Sea Water ◽  
Deep Ocean Water ◽  
Degrading Bacteria

The deep ocean’s link to culture and global processes

2020 ◽  
pp. 141-160
Author(s):  
Andrew R. Thurber ◽  
Amanda N. Netburn
Keyword(s):  
Deep Sea ◽  
Natural Capital ◽  
Deep Ocean ◽  
Decision Processes ◽  
Management Decision ◽  
Surface Ocean ◽  
Societal Benefits ◽  
Challenges And Opportunities ◽  
Nonuse Values ◽  
The Mind

The ocean covers a vast region of the planet and is often thought of as remote and poorly known. However, more than a century of research has made it clear that the ocean provides many beneficial and critical services to society, including a diversity of society–ocean interactions beyond what humans extract (or may extract) from it. The deep sea is no different; it provides a wealth of societal benefits that span the spectrum from inspiring art and captivating the mind to mitigating the rate of climate change through its connectedness with the Earth’s ecosystems. These processes and societal impacts fall within the broad category of ‘nonuse’ ecosystem services, or societal benefits that occur in addition to, or instead of, the services realised through resource extraction. Much like the surface ocean, while there is much more to discover, there is a significant body of information about the deep sea that has resolutely identified this environment as an important resource for nonuse benefits. In this chapter we give an overview of the nonuse services that are provided by the deep ocean, identify some of the advances to date on incorporating these values into the discussion of the natural capital of the deep, and highlight the challenges and opportunities that face incorporation of nonuse values into management-decision processes.

scholarly journals Harnessing the power of eDNA metabarcoding for the detection of deep-sea fishes

2020 ◽  
Author(s):  
Beverly McClenaghan ◽  
Nicole Fahner ◽  
David Cote ◽  
Julek Chawarski ◽  
Avery McCarthy ◽  
...  
Keyword(s):  
Large Volume ◽  
Water Samples ◽  
Deep Sea ◽  
Sea Water ◽  
Survey Methods ◽  
Deep Ocean ◽  
Fish Diversity ◽  
Deep Sea Water ◽  
Sampling Protocols ◽  
Primer Sets

AbstractThe deep ocean is the largest biome on Earth and faces increasing anthropogenic pressures from climate change and commercial fisheries. Our ability to sustainably manage this expansive habitat is impeded by our poor understanding of its inhabitants and by the difficulties in surveying and monitoring these areas. Environmental DNA (eDNA) metabarcoding has great potential to improve our understanding of this region and to facilitate monitoring across a broad range of taxa. Here, we evaluate two eDNA sampling protocols and seven primer sets for elucidating fish diversity from deep sea water samples. We found that deep sea water samples (> 1400 m depth) had significantly lower DNA concentrations than surface or mid-depth samples necessitating a refined protocol with a larger sampling volume. We recovered significantly more DNA in large volume water samples (1.5 L) filtered at sea compared to small volume samples (250 mL) held for lab filtration. Furthermore, the number of unique sequences (exact sequence variants; ESVs) recovered per sample was higher in large volume samples. Since the number of ESVs recovered from large volume samples was less variable and consistently high, we recommend the larger volumes when sampling water from the deep ocean. We also identified three primer sets which detected the most fish taxa but recommend using multiple markers due the variability in detection probabilities and taxonomic resolution among fishes for each primer set. Overall, fish diversity results obtained from metabarcoding were comparable to conventional survey methods. While eDNA sampling and processing need be optimized for this unique environment, the results of this study demonstrate that eDNA metabarcoding can be employed to facilitate biodiversity surveys in the deep ocean, require less dedicated survey effort per unit identification and are capable of simultaneously providing valuable information on other taxonomic groups.

Introduction

2020 ◽  
pp. 1-24
Author(s):  
Maria Baker ◽  
Eva Ramirez-Llodra ◽  
Paul Alan Tyler
Keyword(s):  
Deep Sea ◽  
Natural Capital ◽  
World Ocean ◽  
Deep Ocean ◽  
Scientific Data ◽  
Social Scientists ◽  
Societal Challenges ◽  
The Many ◽  
Sound Management ◽  
Future Work

There has never been a time like the present when there is so much media, scientific, and economic interest in the deep waters of the world ocean and the animals that live there. It is increasingly important for students and new researchers, as well as experienced scientists, to understand how their research can help to address pressing societal challenges. It is beneficial for deep-sea scientists, social scientists, lawyers, authorities, conservationists, industry, and civil society to have broad knowledge of the issues surrounding exploitation in the deep ocean, which has gradually become an increasingly important research focus. The current and future work of deep-sea scientists in all disciplines provides rigorous scientific data and knowledge to support sound management of human activities in this highly complex and variable realm. In this volume, we have brought together internationally recognised scientists, economists, and legal experts to describe the processes by which humans can benefit from the natural capital of the deep sea in a sustainable framework. For this to happen, communication between all deep-sea stakeholders is essential, and this volume aims to facilitate future discussions between the many different sectors of society who may influence the global deep ocean for future generations.

Natural Capital and Exploitation of the Deep Ocean

2020 ◽  
Keyword(s):  
Climate Change ◽  
Deep Sea ◽  
Natural Capital ◽  
Ecological Integrity ◽  
Deep Ocean ◽  
Global Media ◽  
Direct Function ◽  
High Profile ◽  
National Jurisdiction ◽  
Oil Gas

The deep ocean is, by far, the planet’s largest biome and holds a wealth of potential natural assets. Most of the ocean lies beyond national jurisdiction and hence is the responsibility of us all. Human exploitation of the deep ocean is rapidly increasing, becoming more visible to many through the popular media. The scientific literature of deep-sea exploitation and its actual and potential effects has also rapidly expanded as a direct function of this increased national and global interest in deep-sea resources, both biological (e.g. fisheries, genetic resources) and non-biological (e.g. minerals, oil, gas, methane hydrate). At the same time there is a growing interest in deep-sea contamination (including plastics), with many such studies featured in high-profile scientific journals and covered by global media outlets. Finally, climate change is affecting even the deepest regions of our oceans and is a major priority for the international scientific and political agendas. However, there is currently no comprehensive integration of information about resource extraction, pollution and effects of climate change and these topics are only superficially covered in classic textbooks on deep-sea biology. The human race is at a pivotal point in potentially benefitting from the deep ocean’s natural resources and this concise and accessible work provides an account of past explorations and exploitations of the deep ocean, a present understanding of its natural capital and how this may be exploited sustainably for the benefit of humankind whilst maintaining its ecological integrity. The book gives a comprehensive account of geological and physical processes, ecology and biology, exploitation, management, and conservation.

scholarly journals Deep-sea water displacement from a turbidity current induced by the Super Typhoon Hagibis

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e10429
Author(s):  
Shinsuke Kawagucci ◽  
Tetsuya Miwa ◽  
Dhugal J. Lindsay ◽  
Eri Ogura ◽  
Hiroyuki Yamamoto ◽  
...  
Keyword(s):  
Deep Sea ◽  
Sea Water ◽  
Deep Ocean ◽  
Vertical Displacement ◽  
Video Camera ◽  
Turbidity Current ◽  
Turbidity Currents ◽  
Water Displacement ◽  
Suruga Bay ◽  
Super Typhoon

Turbidity currents are the main drivers behind the transportation of terrestrial sediments to the deep sea, and turbidite deposits from such currents have been widely used in geological studies. Nevertheless, the contribution of turbidity currents to vertical displacement of seawater has rarely been discussed. This is partly because until recently, deep-sea turbidity currents have rarely been observed due to their unpredictable nature, being usually triggered by meteorological or geological events such as typhoons and earthquakes. Here, we report a direct observation of a deep-sea turbidity current using the recently developed Edokko Mark 1 monitoring system deployed in 2019 at a depth of 1,370 m in Suruga Bay, central Japan. A turbidity current occurred two days after its probable cause, the Super Typhoon Hagibis (2019), passed through Suruga Bay causing devastating damage. Over aperiod of 40 hours, we observed increased turbidity with turbulent conditions confirmed by a video camera. The turbidity exhibited two sharp peaks around 3:00 and 11:00 on October 14 (Japan Standard Time). The temperature and salinity characteristics during these high turbidity events agreed with independent measurements for shallow water layers in Suruga Bay at the same time, strongly suggesting that the turbidity current caused vertical displacement in the bay’s water column by transporting warmer and shallower waters downslope of the canyon. Our results add to the previous few examples that show meteorological and geological events may have significant contributions in the transportation of shallower seawater to the deep sea. Recent technological developments pertaining to the Edokko Mark 1 and similar devices enable straightforward, long-term monitoring of the deep-seafloor and will contribute to the understanding of similar spontaneous events in the deep ocean.

Simulation on Linear-Motor-Driven Water Hydraulic Reciprocating Plunger Pump

2013 ◽  
Vol 842 ◽  
pp. 530-535 ◽  
Author(s):  
Zeng Meng Zhang ◽  
Yong Jun Gong ◽  
Jiao Yi Hou ◽  
Han Peng Wu
Keyword(s):  
Flow Rate ◽  
Deep Sea ◽  
High Efficiency ◽  
Control Method ◽  
Sea Water ◽  
Linear Motor ◽  
Low Flow ◽  
Flow Pulsation ◽  
Plunger Pump ◽  
Water Hydraulic

The water hydraulic reciprocating plunger pump driven by linear motor is suitable to deep sea application with high efficiency and variable control. Aiming to study the principle structure and working characteristics of the pump, two patterns of valve and piston distribution were designed. And the control method and the performance were analyzed by simulation based on the AMESim model. The results show that the pressure and flow pulsation of piston type pump are much smaller than the valve type, even though the piston type is large in scale and works at low flow rate. Compared with a valve distribution tri-linear-motor reciprocating plunger pump (VDTLMP), as the flow rate of the piston distribution double linear motor reciprocating plunger pump (PDDLMP) is decreased from 36.7 L/min to 21.2 L/min theoretically, the pressure pulsation amplitude is decreased from 46% to 2%, and the flow pulsation rate is also decreased from 0.266 to 0.007. These results contribute to the research on deep-sea water hydraulic power pack and direct drive pump with high efficiency and energy conservation.

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