Results 21 to 30 of about 123,390 (150)
野生动物学报, 1993 灰鹤Grus grus,在我国分布较广除台湾省外,其它各省、区均有分布,以往文献记载在辽宁境内为旅鸟。就目前所知,灰鹤繁殖于俄罗斯和我国内蒙古及新疆等地,越冬地在印度和我国长江以南等一些地区,在山东、河北等地灰鹤越冬也有报导 ...
张跃文, 金连奎, 郑继民
doaj +2 more sources
野生动物学报, 2020 白鹤(Grus leucogeranus)为国家Ⅰ级重点保护动物及IUCN极危(CR)物种,野外种群数量4 000只左右。江西鄱阳湖是全球白鹤最主要的越冬地,几乎全球整个白鹤种群(超过99%)在该区域越冬。学者研究显示:气候、水位、生境类型、人为干扰等因素会对白鹤停歇地及越冬地的种群数量、活动节律、食性等产生影响。白鹤春秋迁徙期会以不同的策略,沿着相似的路线迁徙,具有一定的专一性。白鹤以植物性食物为主,对栖息地有选择偏好。近年来,人工生境成为白鹤重要的觅食越冬地。本文在总结前人的研究基础上 ...
刘 鹏 1 孙志勇 1 刘美娟 2 韩卫杰 1 刘 俊 1 冯莹莹 1 张壹萱 1 雷小勇 3 宋 琼 4 黄晓凤 1
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Trends and progress in studying butterfly migration 蝴蝶迁徙行为的研究趋势与进展
Integrative Conservation, Volume 1, Issue 1, Page 8-24, December 2022., 2022 We show (i) the potential importance of non‐English‐language literature for understanding butterfly migration globally, (ii) studies are mostly concentrated in North America and Europe with very few from the tropics, (iii) most studies are focused on three species: the Monarch (Danaus plexippus), Painted Lady (Vanessa cardui) and Red Admiral (Vanessa ...
Shawan Chowdhury +10 more
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Unravelling the processes between phenotypic plasticity and population dynamics in migratory birds
Journal of Animal Ecology, Volume 91, Issue 5, Page 983-995, May 2022., 2022 This work highlights the critical role of the stopover stage of northward migration in the influence of migration tactics and population dynamics of migratory birds across the whole annual cycle. The authors also demonstrate the key processes linking individual migration tactics and population dynamics.
Jin Liu +5 more
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Lughawiyah: Journal of Arabic Education and Linguistics, 2022 Amin al-Khouli is the pioneer of Balaghah renewal in modern era. Balaghah renewal that is called Fann al-Qaul (Art of Speaking) appeared in a period close to the appearance period of stylistic study in Europe. The purpose of this research is to reveal the connection between Amin al-KhouliÔÇÖs ideas about Balaghah renewal in his book Fann al-Qaul and ...
openaire +1 more source
Named Entity Recognition of Ancient Poems Based on Albert‐BiLSTM‐MHA‐CRF Model
Wireless Communications and Mobile Computing, Volume 2022, Issue 1, 2022., 2022 The extraction and construction of the knowledge graph related to the entity of ancient poems are helpful to excavate the connection between ancient poems, and it is of great significance to inherit the traditional Chinese culture. This paper proposes an Albert‐BiLSTM‐MHA‐CRF model for entity extraction in ancient poems.
Faguo Zhou +3 more
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Ecological Applications, Volume 31, Issue 6, September 2021., 2021 Abstract Species loss has attracted much attention among scientists for more than half a century. However, we have little information on the trends in phylogenetic and functional changes behind the species loss although this information is always asynchronous and important for conservation and management. We measured community trends in Anatidae (ducks
Xianli Che +6 more
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Lughawiyah: Journal of Arabic Education and Linguistics, 2019 Ϻ┘ä┘àÏ┤┘â┘äÏ® Ϻ┘äÏúÏ│ϺÏ│┘èÏ® ┘ä┘çÏ░Ϻ Ϻ┘äϿϡϽ ┘ç┘è ┘ç┘ä ┘è┘êϼϻ ϬÏúϽ┘èÏ▒ Ϻ┘äÏÀÏ▒┘è┘éÏ® Ϻ┘ä┘àÏ▓Ï»┘êϼϮ Ï╣┘ä┘ë ┘à┘çϺÏ▒Ï® Ϻ┘ä┘éÏ▒ϺÏíÏ® Ï╣┘åÏ» Ϻ┘äϬ┘äϺ┘à┘èÏ░ ┘ü┘è ┘àÏ╣┘çÏ» Ϻ┘äϺÏ│Ϭ┘éϺ┘àÏ® Ϻ┘ä┘àϬ┘âϺ┘à┘äÏ® Ϻ┘äÏÑÏ│┘äϺ┘à┘èÏ® Ï¿Ï│┘è┘àϺ┘êϺ┘åϼ Ïú┘ê┘àÏ¿┘è┘ä┘è┘å.
Septika Rudiamon +2 more
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Habitat and spatial trends of U.K. wintering waterbird populations over 50 years
Conservation Biology, EarlyView.Abstract The United Kingdom is an important wintering ground for millions of waterbirds. Most U.K. wintering waterbird populations increased between 1970 and the mid‐1990s, but declined thereafter. We examined U.K. population indices in 46 wintering waterbird species in two 25‐year periods, 1970–1994 and 1995–2019, to identify which waterbird groups ...
Blaise Martay +8 more
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