Biological responses to disturbance from simulated deep-sea polymetallic nodule mining

Daniel O. B. Jones, Stefanie Kaiser, Andrew K. Sweetman, Craig R. Smith, Lenaick Menot, Annemiek Vink, Dwight Trueblood, Jens Greinert, David S. M. Billett, Pedro Martinez Arbizu, Teresa Radziejewska, Ravail Singh, Baban Ingole, Tanja Stratmann, Erik Simon-Lledo, Jennifer M. Durden, Malcolm R. Clark

Research output: Contribution to journalArticle

Abstract

Commercial-scale mining for polymetallic nodules could have a major impact on the deep-sea environment, but the effects of these mining activities on deep-sea ecosystems are very poorly known. The first commercial test mining for polymetallic nodules was carried out in 1970. Since then a number of small-scale commercial test mining or scientific disturbance studies have been carried out. Here we evaluate changes in faunal densities and diversity of benthic communities measured in response to these 11 simulated or test nodule mining disturbances using meta-analysis techniques. We find that impacts are often severe immediately after mining, with major negative changes in density and diversity of most groups occurring. However, in some cases, the mobile fauna and small-sized fauna experienced less negative impacts over the longer term. At seven sites in the Pacific, multiple surveys assessed recovery in fauna over periods of up to 26 years. Almost all studies show some recovery in faunal density and diversity for meiofauna and mobile megafauna, often within one year. However, very few faunal groups return to baseline or control conditions after two decades. The effects of polymetallic nodule mining are likely to be long term. Our analyses show considerable negative biological effects of seafloor nodule mining, even at the small scale of test mining experiments, although there is variation in sensitivity amongst organisms of different sizes and functional groups, which have important implications for ecosystem responses. Unfortunately, many past studies have limitations that reduce their effectiveness in determining responses. We provide recommendations to improve future mining impact test studies. Further research to assess the effects of test-mining activities will inform ways to improve mining practices and guide effective environmental management of mining activities.
Original languageEnglish
Article numbere0171750
JournalPLoS ONE
Volume12
Issue number2
DOIs
Publication statusPublished - 8 Feb 2017

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Oceans and Seas
Ecosystem
Meta-Analysis

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Jones, D. O. B., Kaiser, S., Sweetman, A. K., Smith, C. R., Menot, L., Vink, A., ... Clark, M. R. (2017). Biological responses to disturbance from simulated deep-sea polymetallic nodule mining. PLoS ONE, 12(2), [e0171750]. https://doi.org/10.1371/journal.pone.0171750
Jones, Daniel O. B. ; Kaiser, Stefanie ; Sweetman, Andrew K. ; Smith, Craig R. ; Menot, Lenaick ; Vink, Annemiek ; Trueblood, Dwight ; Greinert, Jens ; Billett, David S. M. ; Martinez Arbizu, Pedro ; Radziejewska, Teresa ; Singh, Ravail ; Ingole, Baban ; Stratmann, Tanja ; Simon-Lledo, Erik ; Durden, Jennifer M. ; Clark, Malcolm R. / Biological responses to disturbance from simulated deep-sea polymetallic nodule mining. In: PLoS ONE. 2017 ; Vol. 12, No. 2.
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title = "Biological responses to disturbance from simulated deep-sea polymetallic nodule mining",
abstract = "Commercial-scale mining for polymetallic nodules could have a major impact on the deep-sea environment, but the effects of these mining activities on deep-sea ecosystems are very poorly known. The first commercial test mining for polymetallic nodules was carried out in 1970. Since then a number of small-scale commercial test mining or scientific disturbance studies have been carried out. Here we evaluate changes in faunal densities and diversity of benthic communities measured in response to these 11 simulated or test nodule mining disturbances using meta-analysis techniques. We find that impacts are often severe immediately after mining, with major negative changes in density and diversity of most groups occurring. However, in some cases, the mobile fauna and small-sized fauna experienced less negative impacts over the longer term. At seven sites in the Pacific, multiple surveys assessed recovery in fauna over periods of up to 26 years. Almost all studies show some recovery in faunal density and diversity for meiofauna and mobile megafauna, often within one year. However, very few faunal groups return to baseline or control conditions after two decades. The effects of polymetallic nodule mining are likely to be long term. Our analyses show considerable negative biological effects of seafloor nodule mining, even at the small scale of test mining experiments, although there is variation in sensitivity amongst organisms of different sizes and functional groups, which have important implications for ecosystem responses. Unfortunately, many past studies have limitations that reduce their effectiveness in determining responses. We provide recommendations to improve future mining impact test studies. Further research to assess the effects of test-mining activities will inform ways to improve mining practices and guide effective environmental management of mining activities.",
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Jones, DOB, Kaiser, S, Sweetman, AK, Smith, CR, Menot, L, Vink, A, Trueblood, D, Greinert, J, Billett, DSM, Martinez Arbizu, P, Radziejewska, T, Singh, R, Ingole, B, Stratmann, T, Simon-Lledo, E, Durden, JM & Clark, MR 2017, 'Biological responses to disturbance from simulated deep-sea polymetallic nodule mining', PLoS ONE, vol. 12, no. 2, e0171750. https://doi.org/10.1371/journal.pone.0171750

Biological responses to disturbance from simulated deep-sea polymetallic nodule mining. / Jones, Daniel O. B.; Kaiser, Stefanie; Sweetman, Andrew K.; Smith, Craig R.; Menot, Lenaick; Vink, Annemiek ; Trueblood, Dwight; Greinert, Jens; Billett, David S. M.; Martinez Arbizu, Pedro; Radziejewska, Teresa; Singh, Ravail; Ingole, Baban; Stratmann, Tanja; Simon-Lledo, Erik; Durden, Jennifer M.; Clark, Malcolm R.

In: PLoS ONE, Vol. 12, No. 2, e0171750, 08.02.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Biological responses to disturbance from simulated deep-sea polymetallic nodule mining

AU - Jones, Daniel O. B.

AU - Kaiser, Stefanie

AU - Sweetman, Andrew K.

AU - Smith, Craig R.

AU - Menot, Lenaick

AU - Vink, Annemiek

AU - Trueblood, Dwight

AU - Greinert, Jens

AU - Billett, David S. M.

AU - Martinez Arbizu, Pedro

AU - Radziejewska, Teresa

AU - Singh, Ravail

AU - Ingole, Baban

AU - Stratmann, Tanja

AU - Simon-Lledo, Erik

AU - Durden, Jennifer M.

AU - Clark, Malcolm R.

PY - 2017/2/8

Y1 - 2017/2/8

N2 - Commercial-scale mining for polymetallic nodules could have a major impact on the deep-sea environment, but the effects of these mining activities on deep-sea ecosystems are very poorly known. The first commercial test mining for polymetallic nodules was carried out in 1970. Since then a number of small-scale commercial test mining or scientific disturbance studies have been carried out. Here we evaluate changes in faunal densities and diversity of benthic communities measured in response to these 11 simulated or test nodule mining disturbances using meta-analysis techniques. We find that impacts are often severe immediately after mining, with major negative changes in density and diversity of most groups occurring. However, in some cases, the mobile fauna and small-sized fauna experienced less negative impacts over the longer term. At seven sites in the Pacific, multiple surveys assessed recovery in fauna over periods of up to 26 years. Almost all studies show some recovery in faunal density and diversity for meiofauna and mobile megafauna, often within one year. However, very few faunal groups return to baseline or control conditions after two decades. The effects of polymetallic nodule mining are likely to be long term. Our analyses show considerable negative biological effects of seafloor nodule mining, even at the small scale of test mining experiments, although there is variation in sensitivity amongst organisms of different sizes and functional groups, which have important implications for ecosystem responses. Unfortunately, many past studies have limitations that reduce their effectiveness in determining responses. We provide recommendations to improve future mining impact test studies. Further research to assess the effects of test-mining activities will inform ways to improve mining practices and guide effective environmental management of mining activities.

AB - Commercial-scale mining for polymetallic nodules could have a major impact on the deep-sea environment, but the effects of these mining activities on deep-sea ecosystems are very poorly known. The first commercial test mining for polymetallic nodules was carried out in 1970. Since then a number of small-scale commercial test mining or scientific disturbance studies have been carried out. Here we evaluate changes in faunal densities and diversity of benthic communities measured in response to these 11 simulated or test nodule mining disturbances using meta-analysis techniques. We find that impacts are often severe immediately after mining, with major negative changes in density and diversity of most groups occurring. However, in some cases, the mobile fauna and small-sized fauna experienced less negative impacts over the longer term. At seven sites in the Pacific, multiple surveys assessed recovery in fauna over periods of up to 26 years. Almost all studies show some recovery in faunal density and diversity for meiofauna and mobile megafauna, often within one year. However, very few faunal groups return to baseline or control conditions after two decades. The effects of polymetallic nodule mining are likely to be long term. Our analyses show considerable negative biological effects of seafloor nodule mining, even at the small scale of test mining experiments, although there is variation in sensitivity amongst organisms of different sizes and functional groups, which have important implications for ecosystem responses. Unfortunately, many past studies have limitations that reduce their effectiveness in determining responses. We provide recommendations to improve future mining impact test studies. Further research to assess the effects of test-mining activities will inform ways to improve mining practices and guide effective environmental management of mining activities.

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DO - 10.1371/journal.pone.0171750

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SN - 1932-6203

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