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![Half a century of global decline in oceanic sharks and rays](https://www.mbrl.ae/o/mbrl-theme/images/site-assets/generic/no-book-image.png)
Half a century of global decline in oceanic sharks and rays
by
Herman, Katelyn B
, Pollom, Riley A
, Fernando, Daniel
, Barreto, Rodrigo
, Francis, Malcolm P
, Rigby, Cassandra L
, Marshall, Andrea D
, Carlson, John K
, Liu, Kwang-Ming
, Pacoureau, Nathan
, Simpfendorfer, Colin A
, Fordham, Sonja V
, Dulvy, Nicholas K
, Romanov, Evgeny V
, Yin, Jamie S
, Sherley, Richard B
, Winker, Henning
, Jabado, Rima W
, Kindsvater, Holly K
, Kyne, Peter M
in
Abundance
/ Animals
/ Aquatic Organisms - isolation & purification
/ Biodiversity
/ Biological diversity conservation
/ Commercial fishing
/ Conservation of Natural Resources - legislation & jurisprudence
/ Conservation of Natural Resources - methods
/ Depletion
/ Endangered & extinct species
/ Endangered Species - statistics & numerical data
/ Extinction
/ Extinction, Biological
/ Female
/ Fisheries
/ Fishes
/ Fishing
/ Food Chain
/ Forecasts and trends
/ Goals
/ History, 20th Century
/ History, 21st Century
/ Mass extinctions
/ Mathematical analysis
/ Oceans and Seas
/ Overfishing
/ Population
/ Population Dynamics - statistics & numerical data
/ Predators
/ Predatory Behavior
/ Protection and preservation
/ Rays (Fishes)
/ Risk Assessment
/ Sharks
/ Skates, Fish
/ Species extinction
/ Statistics
/ Stingrays
/ Sustainable Development
/ Threatened species
/ Trends
/ Wildlife conservation
2021
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Half a century of global decline in oceanic sharks and rays
by
Herman, Katelyn B
, Pollom, Riley A
, Fernando, Daniel
, Barreto, Rodrigo
, Francis, Malcolm P
, Rigby, Cassandra L
, Marshall, Andrea D
, Carlson, John K
, Liu, Kwang-Ming
, Pacoureau, Nathan
, Simpfendorfer, Colin A
, Fordham, Sonja V
, Dulvy, Nicholas K
, Romanov, Evgeny V
, Yin, Jamie S
, Sherley, Richard B
, Winker, Henning
, Jabado, Rima W
, Kindsvater, Holly K
, Kyne, Peter M
in
Abundance
/ Animals
/ Aquatic Organisms - isolation & purification
/ Biodiversity
/ Biological diversity conservation
/ Commercial fishing
/ Conservation of Natural Resources - legislation & jurisprudence
/ Conservation of Natural Resources - methods
/ Depletion
/ Endangered & extinct species
/ Endangered Species - statistics & numerical data
/ Extinction
/ Extinction, Biological
/ Female
/ Fisheries
/ Fishes
/ Fishing
/ Food Chain
/ Forecasts and trends
/ Goals
/ History, 20th Century
/ History, 21st Century
/ Mass extinctions
/ Mathematical analysis
/ Oceans and Seas
/ Overfishing
/ Population
/ Population Dynamics - statistics & numerical data
/ Predators
/ Predatory Behavior
/ Protection and preservation
/ Rays (Fishes)
/ Risk Assessment
/ Sharks
/ Skates, Fish
/ Species extinction
/ Statistics
/ Stingrays
/ Sustainable Development
/ Threatened species
/ Trends
/ Wildlife conservation
2021
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![Half a century of global decline in oceanic sharks and rays](https://www.mbrl.ae/o/mbrl-theme/images/site-assets/generic/no-book-image.png)
Half a century of global decline in oceanic sharks and rays
by
Herman, Katelyn B
, Pollom, Riley A
, Fernando, Daniel
, Barreto, Rodrigo
, Francis, Malcolm P
, Rigby, Cassandra L
, Marshall, Andrea D
, Carlson, John K
, Liu, Kwang-Ming
, Pacoureau, Nathan
, Simpfendorfer, Colin A
, Fordham, Sonja V
, Dulvy, Nicholas K
, Romanov, Evgeny V
, Yin, Jamie S
, Sherley, Richard B
, Winker, Henning
, Jabado, Rima W
, Kindsvater, Holly K
, Kyne, Peter M
in
Abundance
/ Animals
/ Aquatic Organisms - isolation & purification
/ Biodiversity
/ Biological diversity conservation
/ Commercial fishing
/ Conservation of Natural Resources - legislation & jurisprudence
/ Conservation of Natural Resources - methods
/ Depletion
/ Endangered & extinct species
/ Endangered Species - statistics & numerical data
/ Extinction
/ Extinction, Biological
/ Female
/ Fisheries
/ Fishes
/ Fishing
/ Food Chain
/ Forecasts and trends
/ Goals
/ History, 20th Century
/ History, 21st Century
/ Mass extinctions
/ Mathematical analysis
/ Oceans and Seas
/ Overfishing
/ Population
/ Population Dynamics - statistics & numerical data
/ Predators
/ Predatory Behavior
/ Protection and preservation
/ Rays (Fishes)
/ Risk Assessment
/ Sharks
/ Skates, Fish
/ Species extinction
/ Statistics
/ Stingrays
/ Sustainable Development
/ Threatened species
/ Trends
/ Wildlife conservation
2021
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Half a century of global decline in oceanic sharks and rays
![Half a century of global decline in oceanic sharks and rays](https://syndetics.com/index.aspx?isbn=/mc.gif&issn=0028-0836&client=MBRL&type=mbrl)
Journal Article
Half a century of global decline in oceanic sharks and rays
2021
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Overview
Overfishing is the primary cause of marine defaunation, yet declines in and increasing extinction risks of individual species are difficult to measure, particularly for the largest predators found in the high seas
. Here we calculate two well-established indicators to track progress towards Aichi Biodiversity Targets and Sustainable Development Goals
: the Living Planet Index (a measure of changes in abundance aggregated from 57 abundance time-series datasets for 18 oceanic shark and ray species) and the Red List Index (a measure of change in extinction risk calculated for all 31 oceanic species of sharks and rays). We find that, since 1970, the global abundance of oceanic sharks and rays has declined by 71% owing to an 18-fold increase in relative fishing pressure. This depletion has increased the global extinction risk to the point at which three-quarters of the species comprising this functionally important assemblage are threatened with extinction. Strict prohibitions and precautionary science-based catch limits are urgently needed to avert population collapse
, avoid the disruption of ecological functions and promote species recovery
.
Publisher
Nature Publishing Group
Subject
/ Animals
/ Aquatic Organisms - isolation & purification
/ Biological diversity conservation
/ Conservation of Natural Resources - legislation & jurisprudence
/ Conservation of Natural Resources - methods
/ Endangered & extinct species
/ Endangered Species - statistics & numerical data
/ Female
/ Fishes
/ Fishing
/ Goals
/ Population Dynamics - statistics & numerical data
/ Sharks
/ Trends
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