Probabilistic ecological risk assessment for deep-sea mining: a Bayesian Network for Chatham Rise, SW Pacific Ocean DOI Creative Commons
Laura Kaikkonen, Malcolm R. Clark, Daniel Leduc

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 29, 2023

Abstract Increasing interest in seabed resource use the ocean is introducing new pressures on deep-sea environments, ecological impacts of which need to be evaluated carefully. The complexity these ecosystems and dearth comprehensive data pose significant challenges predicting potential impacts. In this study, we demonstrate Bayesian Networks (BNs) as a modelling framework address enhance development robust quantitative predictions concerning effects human activities deep-seafloor ecosystems. approach consists iterative model building with experts, probability estimates relative decrease abundance different functional groups benthos following mining. then used evaluate two alternative mining scenarios identify major sources uncertainty associated By establishing causal connections between various components benthic ecosystem, our offers an improved comprehension seafloor environment. We illustrate using example phosphorite nodule Chatham Rise, offshore Aotearoa/New Zealand, SW Pacific Ocean, examine ways incorporate knowledge from both empirical expert assessments into risk assessments. further discuss how can constructed better inform decision-making, metrics relevant ecology policy. findings study highlight valuable insights that BNs provide evaluating activities. However, continued research collection are crucial for refining ground truthing models improving understanding long-term consequences other anthropogenic marine leveraging such tools, policymakers, researchers, stakeholders work together towards deep sea minimise harm ensure conservation environments.

Language: Английский

Ensemble modelling to predict the distribution of vulnerable marine ecosystems indicator taxa on data‐limited seamounts of Cabo Verde (NW Africa) DOI Creative Commons
Beatriz Vinha, Francisco Javier Murillo,

Mia Schumacher

et al.

Diversity and Distributions, Journal Year: 2024, Volume and Issue: 30(8)

Published: June 29, 2024

Abstract Aim Seamounts are conspicuous geological features with an important ecological role and can be considered vulnerable marine ecosystems (VMEs). Since many deep‐sea regions remain largely unexplored, investigating the occurrence of VME taxa on seamounts is challenging. Our study aimed to predict distribution four cold‐water coral (CWC) taxa, indicators for VMEs, in a region where data scarce. Location around Cabo Verde archipelago (NW Africa). Methods We used species presence–absence obtained from remotely operated vehicle (ROV) footage collected during two research expeditions. Terrain variables calculated using multiscale approach 100‐m‐resolution bathymetry grid, as well physical oceanographical VIKING20X model, at native resolution 1/20°, were environmental predictors. Two modelling techniques (generalized additive model random forest) employed single‐model predictions combined into final weighted‐average ensemble model. Model performance was validated different metrics through cross‐validation. Results orientation, broad scale, presented one highest relative variable contributions models all CWC suggesting that hydrodynamic–topographic interactions could benefit CWCs by maximizing food supply. However, changes finer scales terrain morphology bottom salinity driving differences specific CWCs. The predicted presence consistently achieved metrics, outperforming individual models. Nonetheless, extrapolation uncertainty, measured coefficient variation, high, particularly, least surveyed areas across seamounts, highlighting need collect more future surveys. Main Conclusions shows how data‐poor may assessed likelihood VMEs provides information guide Verde, which fundamental advise ongoing conservation planning.

Language: Английский

Citations

6
Impact of hydraulic collection of deep-sea polymetallic nodules on sediment erosion and benthic organisms DOI
Dingbang Wei, Qiang Yang, Xin Shu

et al.

Journal of Soils and Sediments, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Language: Английский

Citations

0
Coral and float-derived observations of flow around S áan ínghlas-Bowie Seamount in the Northeast Pacific: revisiting the Taylor cone DOI Creative Commons
Tetjana Ross, Cherisse Du Preez, Debby Ianson

et al.

Deep Sea Research Part I Oceanographic Research Papers, Journal Year: 2025, Volume and Issue: unknown, P. 104499 - 104499

Published: April 1, 2025

Language: Английский

Citations

0
Probabilistic ecological risk assessment for deep‐sea mining: A Bayesian network for Chatham Rise, Pacific Ocean DOI Creative Commons
Laura Kaikkonen, Malcolm R. Clark, Daniel Leduc

et al.

Ecological Applications, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 25, 2024

Increasing interest in seabed resource use the ocean is introducing new pressures on deep-sea environments, ecological impacts of which need to be evaluated carefully. The complexity these ecosystems and lack comprehensive data pose significant challenges predicting potential impacts. In this study, we demonstrate Bayesian networks (BNs) as a modeling framework address enhance development robust quantitative predictions concerning effects human activities deep-seafloor ecosystems. approach consists iterative model building with experts, probability estimates relative decrease abundance different functional groups benthos following mining. then used evaluate two alternative mining scenarios identify major sources uncertainty associated By establishing causal connections between various components benthic ecosystem, our offers an improved comprehension seafloor environment. We illustrate using example phosphorite nodule Chatham Rise, offshore Aotearoa/New Zealand, SW Pacific Ocean, examine ways incorporate knowledge from both empirical expert assessments into risk assessments. further discuss how can constructed better inform decision-making, metrics relevant ecology policy. findings study highlight valuable insights that BNs provide evaluating activities. However, research collection are crucial for refining ground truthing models improving understanding long-term consequences other anthropogenic marine leveraging such tools, policymakers, researchers, stakeholders work together toward deep sea minimize harm ensure conservation environments.

Language: Английский

Citations

2
Seamounts ecological modelling: A comprehensive review and assessment of modelling suitability to emergent challenges DOI
Ana Azevedo, A. Guerra, Irene Martins

et al.

Ocean & Coastal Management, Journal Year: 2024, Volume and Issue: 251, P. 107050 - 107050

Published: Feb. 13, 2024

Language: Английский

Citations

1
Utilizing environmental DNA and imaging to study the deep-sea fish community of Takuyo-Daigo Seamount DOI Creative Commons
Akira Iguchi,

Miyuki Nishijima,

Eri Ikeuchi

et al.

npj Biodiversity, Journal Year: 2024, Volume and Issue: 3(1)

Published: May 31, 2024

Abstract The increase in interest of mining at seamounts means there is a critical need to establish baseline inventories through environmental survey, with the aim promoting conservation and stewardship these remote habitats. To efficiently evaluate fish biodiversity around seamount, we compared DNA (eDNA) methods using seawater sponge samples against imagery obtained remotely operated vehicle (ROV) free-fall deep-sea camera lander called Edokko Mark I on Takuyo-Daigo Seamount (153.0°E, 23.5°N) northwestern Pacific Ocean. We detected total 18 families by methods. fauna seamount included many commonly found areas were similar other located latitudes Pacific. Significant differences patterns detection between eDNA imaging attributed differing powers some groups (related primer compatibility size). For fish, difference composition family level was not significant, but ROV significant; latter likely due whether or bait used attract fish. Although workflow implemented here requires improvements, use combination provided better insight into fishes where our knowledge has been extremely limited. Our recovery from demonstrates potential for facilitating surveys impact assessments activities obtain results previously possible visual only.

Language: Английский

Citations

1
A personal reflection on changes in marine science education over the past sixty years DOI Creative Commons
Richard C. Brusca

ICES Journal of Marine Science, Journal Year: 2024, Volume and Issue: 81(3), P. 413 - 425

Published: Feb. 15, 2024

Abstract Changes and needs in marine science (and natural general) training over the past six decades are discussed. Among these are: new technological advances; loss of -ology courses; field courses sense place opportunities for students; need a more interdisciplinary approach to better expose our students threats Earth’s biocultural diversity; include humanities student training, including addressing diminished readership appreciation great books; nature creativity; perils internet; university emphasis on faculty overhead dollars high-profile publications at expense creative research.

Language: Английский

Citations

1
Deep-sea mining could soon be approved — how bad is it? DOI

Natasha Gilbert

Nature, Journal Year: 2023, Volume and Issue: 619(7971), P. 684 - 684

Published: July 14, 2023

Language: Английский

Citations

2
Genetic divergence and migration patterns of a galatheoid squat lobster highlight the need for deep‐sea conservation DOI Creative Commons
Ting Xu,

Xia Chai,

Chong Chen

et al.

Molecular Ecology, Journal Year: 2023, Volume and Issue: 33(1)

Published: Nov. 20, 2023

Abstract Information on genetic divergence and migration patterns of vent‐ seep‐endemic macrobenthos can help delimit biogeographical provinces provide scientific guidelines for deep‐sea conservation under the growing threats anthropogenic disturbances. Nevertheless, related studies are still scarce, impeding informed these hotspots biodiversity. To bridge this knowledge gap, we conducted a population connectivity study galatheoid squat lobster Shinkaia crosnieri – foundation species widely distributed in vent seep ecosystems Northwest Pacific. With application an interdisciplinary methodology involving genomics oceanographic approaches, unveiled two semi‐isolated lineages S . with limited asymmetrical gene flow potentially shaped by geographic settings, habitat types, ocean currents one comprising populations Okinawa Trough, those inhabiting southern trough area likely serving as source; other being Jiaolong (JR) South China Sea. The latter might have recently experienced pronounced demographic contraction exhibited introgression from Trough lineage, mediated intrusion North Pacific Intermediate Water. We then compared biogeographic between representative co‐occurring using published data. Based their subdivisions source‐sink dynamics, highlighted vents JR warrant imperative efforts to sustain biodiversity

Language: Английский

Citations

2
Understanding Deep-Sea Turbulence for Environmental Impact Assessments DOI

Yasuo Furushima,

Mamoru Tanaka, Mehul Sangekar

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0