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cover of episode When Eavesdropping Pays Off

When Eavesdropping Pays Off

2025/6/25
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Short Wave

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A
Andrew Drelin
A
Andy Boyce
E
Emily Kwong
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Andy Boyce: 作为一名生态学家,我主要研究草原生态系统中的鸟类,特别是长嘴丘鹬。在研究过程中,我发现土拨鼠在草原生态系统中扮演着至关重要的角色。它们不仅是许多物种的食物来源,还通过建造洞穴和啃食植被来改变环境,维持草原的开阔性。然而,由于人类的迫害和疾病的威胁,土拨鼠的数量急剧减少,这对整个草原生态系统造成了严重的威胁。因此,我认为我们应该更加重视土拨鼠的保护,通过恢复它们的栖息地和控制疾病的传播,来维护草原生态系统的平衡和稳定。另外,草原能够固存大量的碳,保护草原对于应对气候变化也具有重要意义。 Andrew Drelin: 为了验证土拨鼠的警报声是否能帮助长嘴丘鹬躲避捕食者,我们设计了一个实验。我们使用遥控车搭载动物标本剥制师制作的獾,模拟捕食者接近丘鹬的巢穴。通过比较在有和没有土拨鼠警报声的情况下,丘鹬的反捕食行为,我们发现当丘鹬能听到土拨鼠的警报声时,它们能更早地发现捕食者并采取防御措施。这项研究表明,土拨鼠在草原生态系统中发挥着重要的预警作用,对其他物种的生存至关重要。因此,保护土拨鼠不仅是为了保护它们自身,也是为了保护整个草原生态系统的生物多样性。

Deep Dive

Chapters
Prairie dogs are keystone species in grasslands, playing a vital role in maintaining the ecosystem's health. Their burrowing activities and grazing habits shape the landscape, influencing which other animals can survive there. The decline of prairie dog populations poses a significant threat to the grassland ecosystem.
  • Grasslands are the most threatened ecosystem on Earth and store one-third of all land-based carbon.
  • Prairie dogs are keystone species, disproportionately impacting their environment relative to their size.
  • They modify the environment by building burrows, grazing vegetation, and removing woody plants, which helps maintain the grassland ecosystem.

Shownotes Transcript

Why did the ornithologist strap a taxidermy badger to a remote controlled car and drive it around the prairie? To interrogate the secret world of animal eavesdropping in the grasslands, of course! Today on the show, we travel to the most imperiled ecosystem on the planet to unravel a prairie mystery and find out why prairie dogs are grassland engineers worth keeping tabs on.Got a question about other animal ecosystem engineers? Email us at [email protected]). *Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave).*Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)