Beavers and their dams are so useful to the 環境 that animals 含むing moose, カワウソs and weasels all 利益 from their antics

  • 研究員s 述べる them as 'ecosystem engineers' because of their dams
  • The?semiaquatic rodents 上げる biodiversity in a number of different ways?
  • Their dams flood large areas, creating shallow ponds that harbour lots of insects?
  • The trees they fell create open spaces in the forest where young trees can grow?

By VICTORIA BELL FOR MAILONLINE

Published: | Updated:

An array of different animal 種類 利益 from having beavers in their 環境s because they 上げる biodiversity, 研究員s （人命などを）奪う，主張する.?

The semiaquatic rodents were 有能な of 容易にするing many groups of organisms to 栄える 近づく beaver patches 含むing moose, カワウソs, and weasels.

によれば the 熟考する／考慮する, they do this by 妨げるing?干ばつ, 炭素 sequestration, flood 管理／経営 and keeping streams 冷静な／正味の.?

The team, from the University of Helsinki in Finland, 述べる them as 'ecosystem engineers' because their dam-building work has such a good 影響 on habitats.??

Scroll 負かす／撃墜する for ビデオ

A selection of different animals benefit from having beavers in their environments because they boost biodiversity, researchers claim. The semiaquatic rodents benefit the environment by preventing drought, carbon sequestration, flood management and keeping streams cool

A 選択 of different animals 利益 from having beavers in their 環境s because they 上げる biodiversity, 研究員s （人命などを）奪う，主張する. The semiaquatic rodents 利益 the 環境 by 妨げるing 干ばつ, 炭素 sequestration, flood 管理／経営 and keeping streams 冷静な／正味の

HOW DO BEAVERS CREATE BIODIVERSITY??

Water from the dams beavers build flood large areas, creating shallow ponds that harbour lots of invertebrates, like insects and crustaceans, the 熟考する／考慮する said.

The trees they fell create open spaces in the forest where young saplings can grow.?

When beavers leave a pond and their dams break, the 以前 flooded area is rich in nutrients and can become a meadow.?

宣伝

Both the Eurasian beaver and the American beaver were almost driven extinct by 追跡（する）ing in the 早期に 20th century.

In?Britain, beavers became extinct around 400 years ago, おもに because of 追跡（する）ing?for their fur and meat.?

The 研究員s argue that 促進するing facilitative ecosystem 工学 by beavers could be very 価値のある in habitat 自然保護 or 復古／返還, 特に?in landscapes deficient in wetlands.

The team 始める，決める up camera 罠（にかける）s and looked at 跡をつけるs in southern Finland where the American beaver was introduced in the 1950s.?

After analysing the （映画の）フィート数 they compared the composition of 哺乳動物 fauna of 10 beaver-修正するd 場所／位置s with 10 支配（する）／統制する 場所／位置s.?

The 跡をつけるs showed that moose, カワウソs, weasels and pine martens were more active in beaver patches than other 場所／位置s.

'The カワウソ is a 種類 of some 関心 in Europe, so this may be important from that point of 見解（をとる）,'?Petri Nummi at the University of Helsinki, Finland told the New Scientist.?

They 設立する that water from the dams beavers build flood large areas, creating shallow ponds that harbour lots of invertebrates, like insects and crustaceans, the 熟考する／考慮する said.

A team, from the University of Helsinki in Finland describe them as 'ecosystem engineers' because their dam-building work has such a good effect on habitats. Beavers were hunted and disappeared from Britain around 400 years ago

A team, from the University of Helsinki in Finland 述べる them as 'ecosystem engineers' because their dam-building work has such a good 影響 on habitats. Beavers were 追跡（する）d and disappeared from Britain around 400 years ago

The trees they fell create open spaces in the forest where young saplings can grow, they said.

Felled trees, saplings and aquatic 工場／植物s can all 供給する food for moose.?

When beavers leave a pond and their dams break, the 以前 flooded area is rich in nutrients and can become a meadow.?

In forests where beavers have been introduced in Finland, their presence is linked to 増加するd activity of several 種類, によれば ?

Beavers have begun to re-設立する themselves in Europe, thanks in part to at least 157 reintroduction 事業／計画（する）s that have taken place in 24 European countries.?

In Scotland, they were first 再提出するd in 2009 as part of a 裁判，公判, and now enjoy 保護するd status. But their appetite for 破壊 has led to 衝突 with some 農業者s and landowner s.

A 裁判，公判 in Devon ends next year, when a 決定／判定勝ち（する） will be made whether or not to 延長する it to other parts of England.

The 研究 was published in the 定期刊行物 全世界の 生態学 and 自然保護.?

HOW AND WHY DO BEAVERS BUILD DAMS?

Beavers are 設立する across the northern 半球 and are の中で 惑星's most 技術d 建設業者s.

This 評判 has earnt them the 愛称 'nature's engineers'.

They fell trees by gnawing at their trunks and use the resulting sticks to 建設する dams to stop the movement of water in ponds, lakes, rivers and streams ? creating a 団体／死体s of water with a low 現在の.

The 哺乳動物s then use sticks and mud to create a second structure ? a large ドーム-形態／調整d island that can reach as high as ten feet (3m) tall and up to 1,600ft (500m) long.

Each island 含むs two underwater 入り口s and a living 議会 above water where the animals sleep and 避難所.

Beavers often line the 塀で囲むs of this 議会 with 乾燥した，日照りの leaves and 工場／植物s to 絶縁する it during winter.?

It remains 不明瞭な 正確に／まさに why beavers build dams, but scientists 推測する the creatures use it for warmth and 避難所 in the winter and as p rotection from predators.

Beavers are strong swimmers, and creating a 貯蔵所 of water 許すs the animals to play to their strengths to escape those higher in the food chain.

The biggest beaver dam ever discovered 手段d 2,790ft (850m) ? more than twice the length of the Hoover dam.

The woodland construction, 設立する in the?southern 辛勝する／優位 of 支持を得ようと努めるd Buffalo 国家の Park in Northern Alberta, Canada,?was so expansive it could be seen from space.

宣伝

?

Most watched News ビデオs

Comments 8

株 what you think

The comments below have not been 穏健なd.

The 見解（をとる）s 表明するd in the contents above are those of our 使用者s and do not やむを得ず 反映する the 見解（をとる）s of MailOnline.

We are no longer 受託するing comments on this article.