Nearly two-thirds of 珊瑚 暗礁 shark and ray 種類 are at 危険 of EXTINCTION ? with overfishing 指名するd as the biggest 脅し, 熟考する／考慮する 明らかにする／漏らすs

  • A 熟考する／考慮する has 設立する that 59 per cent of 暗礁 sharks and rays are at 危険 of 絶滅
  • 専門家s say we need to take 即座の 自然保護 活動／戦闘 in the habitat
  • Around 70 per cent of the 種類 saw a 拒絶する／低下する in their 全住民 size
  • Only one 種類, the bluespotted ribbontail ray, saw a 全住民 rise??

By Eirian Jane Prosser For Mailonline

Published: | Updated:

Nearly two-thirds of 珊瑚 暗礁 shark and ray 種類 are at 危険 of 絶滅, with overfishing 指名するd as the biggest 脅し, a new 熟考する／考慮する has 設立する.

The 熟考する／考慮する?looked the 種類 on the International Union for 自然保護 of Nature (IUCN) Red 名簿（に載せる）／表（にあげる）, 脅すd with 絶滅.?

研究員s 熟考する／考慮するd 134 shark and ray 種類, and say the findings 示す the need for 即座の 自然保護 活動／戦闘 on 珊瑚 暗礁s.?

This 含むs putting 合法的な 保護 in place, managing and 施行するing 支配するs amongst 漁業s more 効果的に and creating more 海洋 保護するd Areas.?

Just some of the 危うくするd 珊瑚 暗礁 sharks and rays at 危険 of becoming extinct, によれば a 熟考する／考慮する published in Nature Communications

The most 脅すd 珊瑚 暗礁 sharks and rays

The 熟考する／考慮する, 行為／行うd by 研究員s at the Simon Fraser University in Vancouver, 設立する 59 per cent of 珊瑚 暗礁 shark and ray 種類 are 脅すd with 絶滅.

There are 14 種類, five sharks and nine rays, that are 名簿（に載せる）／表（にあげる）d as 批判的に 危うくするd.?

These 含む:

  • Stripenose guitarfish
  • ありふれた shovelnose ray
  • Smalltooth sawfish
  • Green sawfish
  • Bowmouth guitarfish
  • Brown guitarfish
  • Bottlenose wedgefish
  • Whitespotted wedgefish
  • Smoothnose wedgefish
  • Grey nurse shark
  • Whitefin topeshark
  • Shorttail nurse shark
  • Scalloped hammerhead
  • 広大な／多数の／重要な hammerhead
宣伝

As a result of 気候 change, 珊瑚 暗礁s are some of the most 壊れやすい ecosystems in the world.?

In the 熟考する／考慮する, published in?Nature Communications, 研究員s from Simon Fraser University in Vancouver, led by Dr Samantha Sherman, said: '全住民 拒絶する／低下するs have occurred over more than half a century, with the greatest 拒絶する／低下するs 事前の to 2005.

'即座の 活動／戦闘 through 地元の 保護s, 連合させるd with 幅の広い-規模 漁業s 管理／経営 and 海洋 保護するd Areas, is 要求するd to 避ける 絶滅s and the loss of 批判的な ecosystem 機能（する）／行事 非難するing 暗礁s to a loss of shark and ray biodiversity and ecosystem services, 限界ing 暮らしs and food 安全.'

There are 現在／一般に 150,388 種類 世界的な on the ICUN Red 名簿（に載せる）／表（にあげる）, with 42,108 of those 存在 脅すd with 絶滅.

This means 28 per cent of all 種類 could disappear off the 直面する of the Earth if 活動／戦闘 is not taken.

The IUCN 見積（る）s that around 37 per cent of all types of sharks and rays, in all habitats, are 直面するing 絶滅.?

The 熟考する／考慮する by Dr Sherman その上の 明らかにする／漏らすd that the 絶滅 危険 of sharks and rays who live in and around 珊瑚 暗礁s, as a 百分率 of 脅すd 種類, is almost 二塁打 that of all 1,199 known shark and ray 種類.

The fact that 59 per cent of 珊瑚 暗礁 sharks and rays, 含むing the topeshark and coach whipray, are 危うくするd means that they are the second most 脅すd group in the world.

The bluespotted ribbontail ray (pictured) was the only species of coral reef shark and rays that saw an increase in population

The bluespotted ribbontail ray (pictured) was the only 種類 of 珊瑚 暗礁 shark and rays that saw an 増加する in 全住民

Graph shows the increase in extinction risks of coral reef sharks and rays over the past half century, comparing dates from 1970, 1980,2005 and 2021

Graph shows the 増加する in 絶滅 危険s of 珊瑚 暗礁 sharks and rays over the past half century, comparing dates from 1970, 1980,2005 and 2021

How many 種類 are 脅すd with 絶滅??

によれば the International Union for 自然保護 of Nature (IUCN) Red 名簿（に載せる）／表（にあげる）, 42,100 種類 are 脅すd with 絶滅.

That 量s to 28 per cent of all 種類.

  • Amphibians: 41 per cent
  • 哺乳動物s: 27 per cent
  • Conifers: 34 per cent
  • Birds: 13 per cent
  • Sharks and Rays: 37 per cent
  • 暗礁 珊瑚s: 36 per cent
  • Selected crustaceans: 28 per cent
  • Reptiles: 21 per cent
  • Cycads: 69 per cent??
宣伝

They are just behind 海洋 哺乳動物s, such as イルカs and manatees.?

Most of the shark and ray 種類 (around 70 per cent) saw a 拒絶する／低下する in 全住民 levels, with only 10 per cent remaining stable.??

全体にわたる, rays were more 脅すd than sharks, with only the?bluespotted ribbontail ray seeing its 全住民 増加する.

For larger 種類 such as Bull sharks and 暗礁 Manta Rays, who live off the 暗礁, 絶滅 危険 is greater.?

Several 推論する／理由s were given for the 増加するd 脅し of 絶滅, 含むing loss of habitat and 気候 change.

Overfishing,?however, accounted for 75 per cent of the sharks and rays 熟考する／考慮するd.??

Fishermen 的ing sharks or rays were a 脅し for two thirds of the 種類, 反して unintentional catching was a 脅し for 98 per cent of 種類.

Of the 134 種類 手段d, 109 were still 存在 used in some form for human 消費.?

This 含むd creating leather out of ray 肌 and selling fins and shark meat on the international market.?

In countries with greater fishing 圧力s and 女性 政府s, such as Brazil, Tanzania and Indonesia, 絶滅 危険 of sharks and rays was even greater.

The study found 59 per cent of coral reef shark and ray species are threatened with extinction. Pictured: a cowtail ray in the sand

The 熟考する／考慮する 設立する 59 per cent of 珊瑚 暗礁 shark and ray 種類 are 脅すd with 絶滅. Pictured: a cowtail ray in the sand?

For larger species such as Bull sharks and Reef Manta Rays, who live off the reef, extinction risk is greater

For larger 種類 such as Bull sharks and 暗礁 Manta Rays, who live off the 暗礁, 絶滅 危険 is greater

What is the IUCN's Red 名簿（に載せる）／表（にあげる） of 脅すd 種類??

The IUCN's Red 名簿（に載せる）／表（にあげる） of 脅すd 種類 was created in 1964.

It has since 発展させるd to 供給する a 包括的な 名簿（に載せる）／表（にあげる） of animals, fungus and 工場／植物 種類 most at 危険 from 絶滅.

It 供給するs （警察などへの）密告，告訴（状） about popul ation size, habitat and 生態学.

It 文書s each 種類 use or 貿易（する）, 脅しs and 自然保護 決定／判定勝ち（する）s made to help 保護する the 種類.

The 名簿（に載せる）／表（にあげる） is used by 政府 機関s, 野性生物 departments, 自然保護 NGOs, students and 商売／仕事s.??

Source: IUCN??

宣伝

The paper 結論するd that, if 自然保護s 成果／努力s to 改善する sharks and rays are not 改善するd, the health of 珊瑚 暗礁s could continue to 拒絶する／低下する, with 消極的な 影響s for millions of people that rely on them.

It said: 'Sharks and rays are 重要な 機能の 構成要素s of 珊瑚 暗礁 ecosystems, yet many 全住民s of a few 種類 展示（する） 調印するs of depletion and 地元の 絶滅s.?

'と一緒に 海洋 哺乳動物s, sharks and rays are の中で the most 脅すd groups 設立する on 珊瑚 暗礁s.?

'Overfishing is the main 原因（となる） of elevated 絶滅 危険, 構内／化合物d by 気候 change and habitat degradation.

'The question is whether these 拒絶する／低下するs forewarn of a 全世界の 絶滅 危機.'

珊瑚 暗礁s are becoming an ますます at-危険 habitat that are 極端に 極度の慎重さを要する to small changes in their 環境.?

A University of Hawaii 熟考する／考慮する 設立する that half of the Earth's 珊瑚 暗礁s will be 永久的に 損失d by 2035 if 気候 change continues unabated.

This was based on the 影響s of sea surface 気温, ocean acidification, 熱帯の 嵐／襲撃するs, land use and the human 全住民.

Their results 明らかにする／漏らすd that, when looking at a 選び出す／独身 stressor under 現在の 条件s, half of the world's 珊瑚 暗礁s will be 永久的に 損失d by 2050.?

However, when 多重の stressors are considered, this date 落ちるs to 2035.?

Most watched News ビデオs