除外來鹿保護生態系統

為了保護當地生態系統，美國加州聖卡塔利娜島上的 2,000 隻外來騾鹿將被清除。這些鹿約於一個世紀前被獵人引入島上，以供狩獵活動之用。環保組織之所以推動這項撲殺行動，是因為這些鹿過度啃食原生植物，導致植物難以再生；同時，牠們也助長了易燃入侵性草種的蔓延，增加了山火發生的風險。

In California, 2,000 non-native mule deer on Santa Catalina Island will be removed to protect the local ecosystem. These deer were introduced to the island by hunters about a century ago for sport hunting. Conservation organizations are carrying out the cull because the deer have overgrazed native plants, making it difficult for them to regenerate. Their grazing has also facilitated the spread of highly flammable invasive grasses, increasing the risk of wildfires.

https://www.theguardian.com/us-news/2026/sep/03/catalina-island-deer-california

融冰開通海域令鯨魚北遷

過去三十年來，數以千計的鯨魚——包括長鬚鯨、座頭鯨和普通小鬚鯨——陸續進入東格陵蘭沿岸原本被海冰阻隔的海域。這項前所未見的變化透過空中調查、船隻觀察紀錄以及衛星追蹤被完整記錄下來。科學家警告，這正在引發重大的生態擾動：依賴海冰的獨角鯨如今被迫與這些新來的鯨魚共享棲地，而大量大型掠食者的湧入可能加劇牠們與海鳥、海豹及大型魚類之間對食物資源的競爭。

Over the past three decades, thousands of whales—including fin whales, humpback whales, and common minke whales—have moved into waters along East Greenland that were once blocked by sea ice. This unprecedented shift has been documented through aerial surveys, ship‑based observations, and satellite tracking. Scientists warn that the change is driving a major ecological disruption: ice‑associated narwhals are now forced to share their habitat with these incoming whales, and the surge of large predators may intensify competition for food resources relied on by seabirds, seals, and larger fish.

https://scitechdaily.com/thousands-of-giant-whales-are-suddenly-flooding-into-an-arctic-feeding-frenzy/

以貌取袋狼？！

https://www.earth.com/animals/tasmanian-tiger-skull-sheep-myth/

選擇多反阻繁殖

一項針對可普灰雨蛙（Dryophytes chrysoscelis）的研究指出，當雌蛙同時面對過多彼此競爭的雄蛙鳴叫時，會陷入「選擇困難」。隨著雄蛙數量增加，雌蛙的擇偶決策速度明顯變慢，最終成功選定配偶的機率亦隨之下降。這種困境並非因雄蛙的鳴叫變得難以分辨，而是源於雌蛙在處理大量資訊時的認知限制。研究結果顯示，在擁擠的繁殖環境中，動物的認知能力會影響其擇偶過程與繁殖成功率。

A study on Cope’s gray treefrogs (Dryophytes chrysoscelis) shows that females experience choice overload when confronted with too many competing male calls. As the number of calling males increases, females become slower to make mating decisions and are less likely to select a mate. This difficulty does not stem from the calls becoming harder to distinguish, but from cognitive limits in processing large amounts of information. The findings indicate that, in crowded breeding environments, an animal’s cognitive capacity can influence mate choice and reproductive success.

https://www.cell.com/iscience/fulltext/S2589-0042(26)02464-8

為流浪狗絕育救近危鳥

在印度拉達克地區，專家正透過為流浪狗絕育，試圖挽救列為近危的黑頸鶴。當地許多流浪狗會捕食黑頸鶴幼鳥並干擾其巢穴。保育團隊已為超過 2,950 隻流浪狗實施絕育，並致力改善廚餘與垃圾管理，以協助控制流浪狗數量的增長。

In Ladakh, India, experts are trying to save the Near Threatened black‑necked crane by sterilizing stray dogs. Many stray dogs in the area prey on crane chicks and disturb their nests. A conservation team has sterilized more than 2,950 dogs and is also improving food‑waste management to help curb the growth of the stray dog population.

https://www.downtoearth.org.in/wildlife-biodiversity/bnhs-sterilises-over-2950-dogs-to-save-black-necked-cranes-and-wildlife-in-ladakh