Assessing bottom trawling impacts based on the longevity of benthic invertebrates

Jan Geert Hiddink*, Simon Jennings, Marija Sciberras, Stefan G. Bolam, Giulia Cambiè, Robert A. McConnaughey, Tessa Mazor, Ray Hilborn, Jeremy S. Collie, C.R. Pitcher, Ana M. Parma, Petri Suuronen, Michel J. Kaiser, Adriaan D. Rijnsdorp

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)

Abstract

Bottom trawling is the most widespread human activity directly affecting seabed habitats. Assessment and effective management of the effects of bottom trawling at the scale of fisheries requires an understanding of differences in sensitivity of biota to trawling. Responses to disturbance are expected to depend on the intrinsic rate of increase in populations (r), which is expected to be linearly related to the reciprocal of longevity. We examine the relationship between the longevity of benthic invertebrates and their response to bottom trawling; both in terms of the immediate mortality following a trawl pass and their subsequent rates of recovery. We collate all available data from experimental and comparative trawling studies, and test how longevity influences these aspects of sensitivity. The shortest lived organisms (<1 year) increased in abundance shortly after experimental trawling but showed no response to trawling in long-term comparative studies. Conversely, the abundance of biota with a life span >1 year decreased by ~9% immediately following a trawl pass. The effect of bottom trawling in comparative studies increased with longevity, with a 2–3× larger effect on biota living >10 years than on biota living 1–3 years. We attribute this difference to the slower recovery rates of the long-lived biota. The observed relationship between the intrinsic rate of population increase (r, our metric of recovery rate) and the reciprocal of longevity matches theoretical expectation and predicts that the sensitivity of habitats to bottom trawling is higher in habitats with higher proportions of long-lived organisms. Synthesis and applications. Where the longevity of a species or the longevity distribution of a community is known or can be inferred, our estimates of depletion and intrinsic rate of increase can be combined with high-resolution maps of trawling intensity to assess trawling impacts at the scale of the fishery or other defined unit of assessment. Our estimates of r may also be used to estimate recovery times following other forms of seabed disturbance.

Original languageEnglish
Pages (from-to)1075-1084
JournalJournal of Applied Ecology
Volume56
Issue number5
Early online date30 Sep 2018
DOIs
Publication statusPublished - May 2019

Fingerprint

bottom trawling
invertebrate
trawling
biota
habitat
fishery
disturbance
rate
comparative study
human activity
mortality
effect

Keywords

  • benthic invertebrates
  • bottom trawl
  • fisheries management
  • impact assessment
  • life-history meta-analysis
  • seabed disturbance
  • systematic review

Cite this

Hiddink, J. G., Jennings, S., Sciberras, M., Bolam, S. G., Cambiè, G., McConnaughey, R. A., ... Rijnsdorp, A. D. (2019). Assessing bottom trawling impacts based on the longevity of benthic invertebrates. Journal of Applied Ecology, 56(5), 1075-1084. https://doi.org/10.1111/1365-2664.13278
Hiddink, Jan Geert ; Jennings, Simon ; Sciberras, Marija ; Bolam, Stefan G. ; Cambiè, Giulia ; McConnaughey, Robert A. ; Mazor, Tessa ; Hilborn, Ray ; Collie, Jeremy S. ; Pitcher, C.R. ; Parma, Ana M. ; Suuronen, Petri ; Kaiser, Michel J. ; Rijnsdorp, Adriaan D. / Assessing bottom trawling impacts based on the longevity of benthic invertebrates. In: Journal of Applied Ecology. 2019 ; Vol. 56, No. 5. pp. 1075-1084.
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abstract = "Bottom trawling is the most widespread human activity directly affecting seabed habitats. Assessment and effective management of the effects of bottom trawling at the scale of fisheries requires an understanding of differences in sensitivity of biota to trawling. Responses to disturbance are expected to depend on the intrinsic rate of increase in populations (r), which is expected to be linearly related to the reciprocal of longevity. We examine the relationship between the longevity of benthic invertebrates and their response to bottom trawling; both in terms of the immediate mortality following a trawl pass and their subsequent rates of recovery. We collate all available data from experimental and comparative trawling studies, and test how longevity influences these aspects of sensitivity. The shortest lived organisms (<1 year) increased in abundance shortly after experimental trawling but showed no response to trawling in long-term comparative studies. Conversely, the abundance of biota with a life span >1 year decreased by ~9{\%} immediately following a trawl pass. The effect of bottom trawling in comparative studies increased with longevity, with a 2–3× larger effect on biota living >10 years than on biota living 1–3 years. We attribute this difference to the slower recovery rates of the long-lived biota. The observed relationship between the intrinsic rate of population increase (r, our metric of recovery rate) and the reciprocal of longevity matches theoretical expectation and predicts that the sensitivity of habitats to bottom trawling is higher in habitats with higher proportions of long-lived organisms. Synthesis and applications. Where the longevity of a species or the longevity distribution of a community is known or can be inferred, our estimates of depletion and intrinsic rate of increase can be combined with high-resolution maps of trawling intensity to assess trawling impacts at the scale of the fishery or other defined unit of assessment. Our estimates of r may also be used to estimate recovery times following other forms of seabed disturbance.",
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author = "Hiddink, {Jan Geert} and Simon Jennings and Marija Sciberras and Bolam, {Stefan G.} and Giulia Cambi{\`e} and McConnaughey, {Robert A.} and Tessa Mazor and Ray Hilborn and Collie, {Jeremy S.} and C.R. Pitcher and Parma, {Ana M.} and Petri Suuronen and Kaiser, {Michel J.} and Rijnsdorp, {Adriaan D.}",
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Hiddink, JG, Jennings, S, Sciberras, M, Bolam, SG, Cambiè, G, McConnaughey, RA, Mazor, T, Hilborn, R, Collie, JS, Pitcher, CR, Parma, AM, Suuronen, P, Kaiser, MJ & Rijnsdorp, AD 2019, 'Assessing bottom trawling impacts based on the longevity of benthic invertebrates', Journal of Applied Ecology, vol. 56, no. 5, pp. 1075-1084. https://doi.org/10.1111/1365-2664.13278

Assessing bottom trawling impacts based on the longevity of benthic invertebrates. / Hiddink, Jan Geert; Jennings, Simon; Sciberras, Marija; Bolam, Stefan G.; Cambiè, Giulia; McConnaughey, Robert A.; Mazor, Tessa; Hilborn, Ray; Collie, Jeremy S.; Pitcher, C.R.; Parma, Ana M.; Suuronen, Petri; Kaiser, Michel J.; Rijnsdorp, Adriaan D.

In: Journal of Applied Ecology, Vol. 56, No. 5, 05.2019, p. 1075-1084.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Assessing bottom trawling impacts based on the longevity of benthic invertebrates

AU - Hiddink, Jan Geert

AU - Jennings, Simon

AU - Sciberras, Marija

AU - Bolam, Stefan G.

AU - Cambiè, Giulia

AU - McConnaughey, Robert A.

AU - Mazor, Tessa

AU - Hilborn, Ray

AU - Collie, Jeremy S.

AU - Pitcher, C.R.

AU - Parma, Ana M.

AU - Suuronen, Petri

AU - Kaiser, Michel J.

AU - Rijnsdorp, Adriaan D.

PY - 2019/5

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N2 - Bottom trawling is the most widespread human activity directly affecting seabed habitats. Assessment and effective management of the effects of bottom trawling at the scale of fisheries requires an understanding of differences in sensitivity of biota to trawling. Responses to disturbance are expected to depend on the intrinsic rate of increase in populations (r), which is expected to be linearly related to the reciprocal of longevity. We examine the relationship between the longevity of benthic invertebrates and their response to bottom trawling; both in terms of the immediate mortality following a trawl pass and their subsequent rates of recovery. We collate all available data from experimental and comparative trawling studies, and test how longevity influences these aspects of sensitivity. The shortest lived organisms (<1 year) increased in abundance shortly after experimental trawling but showed no response to trawling in long-term comparative studies. Conversely, the abundance of biota with a life span >1 year decreased by ~9% immediately following a trawl pass. The effect of bottom trawling in comparative studies increased with longevity, with a 2–3× larger effect on biota living >10 years than on biota living 1–3 years. We attribute this difference to the slower recovery rates of the long-lived biota. The observed relationship between the intrinsic rate of population increase (r, our metric of recovery rate) and the reciprocal of longevity matches theoretical expectation and predicts that the sensitivity of habitats to bottom trawling is higher in habitats with higher proportions of long-lived organisms. Synthesis and applications. Where the longevity of a species or the longevity distribution of a community is known or can be inferred, our estimates of depletion and intrinsic rate of increase can be combined with high-resolution maps of trawling intensity to assess trawling impacts at the scale of the fishery or other defined unit of assessment. Our estimates of r may also be used to estimate recovery times following other forms of seabed disturbance.

AB - Bottom trawling is the most widespread human activity directly affecting seabed habitats. Assessment and effective management of the effects of bottom trawling at the scale of fisheries requires an understanding of differences in sensitivity of biota to trawling. Responses to disturbance are expected to depend on the intrinsic rate of increase in populations (r), which is expected to be linearly related to the reciprocal of longevity. We examine the relationship between the longevity of benthic invertebrates and their response to bottom trawling; both in terms of the immediate mortality following a trawl pass and their subsequent rates of recovery. We collate all available data from experimental and comparative trawling studies, and test how longevity influences these aspects of sensitivity. The shortest lived organisms (<1 year) increased in abundance shortly after experimental trawling but showed no response to trawling in long-term comparative studies. Conversely, the abundance of biota with a life span >1 year decreased by ~9% immediately following a trawl pass. The effect of bottom trawling in comparative studies increased with longevity, with a 2–3× larger effect on biota living >10 years than on biota living 1–3 years. We attribute this difference to the slower recovery rates of the long-lived biota. The observed relationship between the intrinsic rate of population increase (r, our metric of recovery rate) and the reciprocal of longevity matches theoretical expectation and predicts that the sensitivity of habitats to bottom trawling is higher in habitats with higher proportions of long-lived organisms. Synthesis and applications. Where the longevity of a species or the longevity distribution of a community is known or can be inferred, our estimates of depletion and intrinsic rate of increase can be combined with high-resolution maps of trawling intensity to assess trawling impacts at the scale of the fishery or other defined unit of assessment. Our estimates of r may also be used to estimate recovery times following other forms of seabed disturbance.

KW - benthic invertebrates

KW - bottom trawl

KW - fisheries management

KW - impact assessment

KW - life-history meta-analysis

KW - seabed disturbance

KW - systematic review

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DO - 10.1111/1365-2664.13278

M3 - Article

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EP - 1084

JO - Journal of Applied Ecology

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SN - 0021-8901

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Hiddink JG, Jennings S, Sciberras M, Bolam SG, Cambiè G, McConnaughey RA et al. Assessing bottom trawling impacts based on the longevity of benthic invertebrates. Journal of Applied Ecology. 2019 May;56(5):1075-1084. https://doi.org/10.1111/1365-2664.13278