白尾鹿對馴鹿增添威脅

由於氣候變暖,美國的白尾鹿開始向北遷徙,擴散到加拿大西部的北方森林——易危馴鹿的棲息地。牠們的天敵狼,於這些地區的數量也因此增加。隨著森林中狼的數量增多,對馴鹿等其他野生動物的壓力也隨之加重,進一步威脅到馴鹿。

Due to warming climate, white-tailed deer in America are moving and expending north into the boreal forest in western Canada, where the vulnerable caribou inhabit. when the deer moved north, their predators, wolves, also increased in those areas. with more wolves in the forest, the pressure on other wildlife like caribou has increased, further threatened caribous’ population.

https://news.ok.ubc.ca/2024/04/25/deer-are-expanding-north-and-thats-not-good-for-caribou/

冰蓋融化導致雛鳥死亡

2023年南極冰蓋數量再創新低,出現皇帝企鵝大規模繁殖失敗。冰蓋迅速融化並以往提早了,雛鳥在換上保暖的防水羽毛之前就被迫下水,導致雛鳥淹死或凍死的情況。66 個皇帝企鵝群落中有 14 個都受到影響,大大增加了雛鳥的死亡率。

In Antarctic, sea ice level reached new lows in 2023, and emperor penguin suffered mass breeding failures. The sea ice breaks up too early, the chicks went into the sea before they grow their waterproof feathers, and resulted in high chick mortality. 14 out of 66 emperor penguin colonies were affected.

https://en.mercopress.com/2024/04/29/emperor-penguin-colonies-in-antarctica-suffer-as-sea-ice-diminishes

計劃建立鸚鵡資料庫

小葵花鳳頭鸚鵡及桑巴島折衷鸚鵡等鸚鵡被非法貿易的情況越來越嚴重。科學家正計劃透過採集羽毛或雛鳥的血液來收集野生鸚鵡的 DNA,並建立牠們的資料庫。當有鸚鵡被查獲時,工作人員可以利用DNA資料庫追蹤牠們的來源,並野放回到原本的棲息地。執法機構還可以透過該資料庫,追查偷獵活動的地點,並有望揭發這些販運集團。

Parrots like the yellow-crested cockatoo and sumba eclectus are increasing targeted by illegal trade. Scientists are planning to collect wild parrots’ DNA by collecting their feather or blood from nestling, and build a database of them. Officials will be able to take seized birds’ DNA and track their origin then return them home. The database can also be access by law enforcement agencies to help discover locations of poaching actives and hopefully reveal trafficking networks.

https://www.earth.com/news/saving-parrots-in-the-illegal-wildlife-trade-with-dna-technology/

馬島獴捕食極危冕狐猴

於馬達加斯加一個小型自然保護區,頂級捕食者馬島獴被發現捕食極度瀕臨滅絕的冕狐猴。馬島獴屬易危物種,通常捕食囓齒類、鳥類或野豬等較小型的動物。冕狐猴是冕狐猴中體型最大的物種,但由於保護區被農地包圍,棲息地被孤立,近親繁殖削弱了冕狐猴的健康及數量,令牠們更容易成為馬島獴的目標。

Critically endangered diademed sifakas are being hunted by vulnerable fosa, the top predator in a small nature reserve in Madagascar. Fosa usually preys on smaller animals like rodents, birds or wild pigs. The diademed sifaka is the largest sifaka species, but because the nature reserve is surrounded by farmland and became an isolated habitat, inbreeding has weakened the sifaka’s population, and they became easy target for the fosas.

https://www.popsci.com/environment/lemur-madagascar-predator/

年輕白鸛喜歡跟大隊

大部分白鸛會選擇與其他白鸛一同遷徙,尤其是年輕的白鸛。研究人員認為,年輕白鸛在遷徙過程中會依賴其他白鸛的幫助,例如熱氣流定位及尋找食物來源等來增加自己的生存機會。而具有更多遷徙經驗的年長白鸛,獨自飛行的意願亦相對較高。

White storks prefer to fly on the same route with other storks, especially younger storks. Researchers believe young storks rely more on the other storks to survive during the migrations with things like locating thermals and finding food sources. Older storks with more migration experience are more independent and willing to fly alone.

https://www.mpg.de/21823848/0412-ornr-storks-fly-with-a-little-help-from-their-friends-987453-x

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