Overfishing and habitat loss drives range contraction of iconic marine fishes to near extinction

Helen F. Yan; Peter M. Kyne; Rima W. Jabado; Ruth H. Leeney; Lindsay N.K. Davidson; Danielle H. Derrick; Brittany Finucci; Robert P. Freckleton; Sonja V. Fordham; Nicholas K. Dulvy

doi:10.1126/sciadv.abb6026

Overfishing and habitat loss drives range contraction of iconic marine fishes to near extinction

Helen F. Yan, Peter M. Kyne, Rima W. Jabado, Ruth H. Leeney, Lindsay N.K. Davidson, Danielle H. Derrick, Brittany Finucci, Robert P. Freckleton, Sonja V. Fordham, Nicholas K. Dulvy

Research Institute for Environment and Livelihoods

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129 Citations (Scopus)

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Abstract

Extinctions on land are often inferred from sparse sightings over time, but this technique is ill-suited for wide-ranging species. We develop a space-for-time approach to track the spatial contraction and drivers of decline of sawfishes. These iconic and endangered shark-like rays were once found in warm, coastal waters of 90 nations and are now presumed extinct in more than half (n = 46). Using dynamic geography theory, we predict that sawfishes are gone from at least nine additional nations. Overfishing and habitat loss have reduced spatial occupancy, leading to local extinctions in 55 of the 90 nations, which equates to 58.7% of their historical distribution. Retention bans and habitat protections are urgently necessary to secure a future for sawfishes and similar species.

Original language	English
Article number	eabb6026
Pages (from-to)	1-12
Number of pages	10
Journal	Science Advances
Volume	7
Issue number	7
DOIs	https://doi.org/10.1126/sciadv.abb6026
Publication status	Published - 10 Feb 2021

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10.1126/sciadv.abb6026

36394024-oaFinal published version, 1.85 MBLicence: Other

Cite this

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title = "Overfishing and habitat loss drives range contraction of iconic marine fishes to near extinction",

abstract = "Extinctions on land are often inferred from sparse sightings over time, but this technique is ill-suited for wide-ranging species. We develop a space-for-time approach to track the spatial contraction and drivers of decline of sawfishes. These iconic and endangered shark-like rays were once found in warm, coastal waters of 90 nations and are now presumed extinct in more than half (n = 46). Using dynamic geography theory, we predict that sawfishes are gone from at least nine additional nations. Overfishing and habitat loss have reduced spatial occupancy, leading to local extinctions in 55 of the 90 nations, which equates to 58.7% of their historical distribution. Retention bans and habitat protections are urgently necessary to secure a future for sawfishes and similar species.",

author = "Yan, {Helen F.} and Kyne, {Peter M.} and Jabado, {Rima W.} and Leeney, {Ruth H.} and Davidson, {Lindsay N.K.} and Derrick, {Danielle H.} and Brittany Finucci and Freckleton, {Robert P.} and Fordham, {Sonja V.} and Dulvy, {Nicholas K.}",

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AU - Yan, Helen F.

AU - Kyne, Peter M.

AU - Jabado, Rima W.

AU - Leeney, Ruth H.

AU - Davidson, Lindsay N.K.

AU - Derrick, Danielle H.

AU - Finucci, Brittany

AU - Freckleton, Robert P.

AU - Fordham, Sonja V.

AU - Dulvy, Nicholas K.

PY - 2021/2/10

Y1 - 2021/2/10

N2 - Extinctions on land are often inferred from sparse sightings over time, but this technique is ill-suited for wide-ranging species. We develop a space-for-time approach to track the spatial contraction and drivers of decline of sawfishes. These iconic and endangered shark-like rays were once found in warm, coastal waters of 90 nations and are now presumed extinct in more than half (n = 46). Using dynamic geography theory, we predict that sawfishes are gone from at least nine additional nations. Overfishing and habitat loss have reduced spatial occupancy, leading to local extinctions in 55 of the 90 nations, which equates to 58.7% of their historical distribution. Retention bans and habitat protections are urgently necessary to secure a future for sawfishes and similar species.

AB - Extinctions on land are often inferred from sparse sightings over time, but this technique is ill-suited for wide-ranging species. We develop a space-for-time approach to track the spatial contraction and drivers of decline of sawfishes. These iconic and endangered shark-like rays were once found in warm, coastal waters of 90 nations and are now presumed extinct in more than half (n = 46). Using dynamic geography theory, we predict that sawfishes are gone from at least nine additional nations. Overfishing and habitat loss have reduced spatial occupancy, leading to local extinctions in 55 of the 90 nations, which equates to 58.7% of their historical distribution. Retention bans and habitat protections are urgently necessary to secure a future for sawfishes and similar species.

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Overfishing and habitat loss drives range contraction of iconic marine fishes to near extinction

Abstract

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