Global S&T Development Trend Analysis Platform of Resources and Environment
Study Finds Even the Common House Sparrow Is Declining | |
admin | |
2021-02-11 | |
发布年 | 2021 |
语种 | 英语 |
国家 | 美国 |
领域 | 气候变化 |
正文(英文) | The European House Sparrow has a story to tell about survival in the modern world. In parts of its native range in Europe, House Sparrow numbers are down by nearly 60%. Their fate in the U.S. and Canada is less well known. A new study by Cornell Lab of Ornithology scientists aims to clarify the status of this non-native species, using 21 years of citizen science data from the Cornell Lab's Project FeederWatch. The results are published in the Wilson Journal of Ornithology. "We wanted to find out where and how much House Sparrows might be declining here," explains lead author Liam Berigan, who did this work while at the Cornell Lab and who is now a Ph.D. student at the University of Maine. "We also explored whether the declines would match up with an increase in hawk populations, as is true in European studies. Surprisingly, they didn't." FeederWatchers record observations during the non-breeding season when House Sparrows gather in flocks. Reports from nearly 12,500 sites were used and cross-referenced with the National Land Cover database to determine whether the U.S. sightings came from rural or urban locations. Findings for the U.S. and Canada:
House Sparrows were introduced in Brooklyn in 1851. They expanded rapidly to become one of the most common species in the U.S. and Canada. Latest estimates peg the population at 82 million individuals. The global breeding population is estimated at 740 million (Partners in Flight). "When even a bird as common as the House Sparrow is experiencing population declines, this is probably a reflection on the state of the environment," says Berigan. "In Europe, a lack of urban green space and nesting sites are threats. It's likely some of those same factors are at work in North America and contribute to House Sparrow declines here."
make a difference: sponsored opportunity
Story Source: Materials provided by Cornell University. Note: Content may be edited for style and length. Journal Reference:
Cite This Page: Cornell University. "Study finds even the common house sparrow is declining: Citizen scientists provide the research data." ScienceDaily. ScienceDaily, 11 February 2021.
Cornell University. (2021, February 11). Study finds even the common house sparrow is declining: Citizen scientists provide the research data. ScienceDaily. Retrieved February 11, 2021 from www.sciencedaily.com/releases/2021/02/210211114002.htm
Cornell University. "Study finds even the common house sparrow is declining: Citizen scientists provide the research data." ScienceDaily. www.sciencedaily.com/releases/2021/02/210211114002.htm (accessed February 11, 2021).
|
URL | 查看原文 |
来源平台 | Science Daily |
文献类型 | 新闻 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/314454 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | admin. Study Finds Even the Common House Sparrow Is Declining. 2021. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[admin]的文章 |
百度学术 |
百度学术中相似的文章 |
[admin]的文章 |
必应学术 |
必应学术中相似的文章 |
[admin]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论