Results 21 to 30 of about 1,103 (205)
Progress in the studies of vivipary in mangrove plants [PDF]
, 2016 【中文摘要】植物胎生是指有性繁殖产生的后代在母体上直接萌发的现象, 在红树植物中最为常见。红树植物生长在热带亚热带海岸潮间带, 耐受高盐、高温、淹水缺氧和海浪冲击等复杂环境。胎生被认为是红树植物对这种特殊生境的重要适应方式。 该文从形态发育、生理生化、分子水平、生态适应4个层次讨论红树植物胎生现象对复杂生境的适应性, 并指出现有研究存 在的不足, 对将来的研究方向进行了展望。与非胎生胚胎发育相比, 红树植物胎生是一个遗传的程序, 在进化过程中形成了 一些特殊的结构 ...
Cai Ling-ling +11 more
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Island restoration to rebuild seabird populations and amplify coral reef functioning
Conservation Biology, Volume 39, Issue 1, February 2025.Abstract Mobile organisms like seabirds can provide important nutrient flows between ecosystems, but this connectivity has been interrupted by the degradation of island ecosystems. Island restoration (via invasive species eradications and the restoration of native vegetation) can reestablish seabird populations and their nutrient transfers between ...
Ruth E. Dunn +5 more
wiley +1 more source
Observation on Some Activities of Reproduction in Little Egrets (Egretta garzetta) at Jiyu Island in Xiamen [PDF]
, 2003 于 2 0 0 1年 3～ 7月采用颜色标记法 ,记录厦门白鹭保护区内鸡屿岛白鹭 (Egrettagarzetta)卵产出和孵出的顺序和时间 ,并称重卵和雏鸟。有 91 4 %的窝卵数为 4～ 5枚 ,产卵期 7 0± 1 9d ,出壳期 4 2± 1 4d ;卵孵化时间与产卵顺序显著负相关 ;不同产出顺序卵重无差异 ;不同孵出顺序雏鸟早期 (≤ 5d)发育无差异 ,之后差异显著 ,第 4出壳的雏鸟发育水平和成活率较低 ,而第 5出壳的雏鸟最低 ;亲鸟在产卵期的孵化是非连续的 ,而产卵结束后相对连续 ...
胡慧娟 +3 more
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Integrative Conservation, Volume 3, Issue 4, Page 330-341, December 2024.Despite the availability of data on plants and their pollinators from the Indian sub‐continent, detailed investigations that explain the intricacy of the mutualistic interaction at both population and community levels have largely been limited. This review explores the current status of pollination ecology research in India and suggests future ...
Arjun Adit +3 more
wiley +1 more source
Integrative Conservation, Volume 3, Issue 4, Page 294-311, December 2024.Freshwater biodiversity in China is threatened by multiple anthropogenic factors, and while there are some reasons to suppose it may be possible to bend the curve of biodiversity loss, the variety of threats and their likely interactions with ongoing climate change provide little basis for optimism. For example, the historic overexploitation of Yangtze
David Dudgeon
wiley +1 more source
Preliminary Studies on the Nestling Growth，Hatching and Reproductivity of Three Specices of Herons [PDF]
, 2009 本实验于2006～2008年间在厦门的鸡屿、大屿、大兔屿，漳浦的菜屿列岛和福鼎的日屿岛初步调查了黄嘴白鹭（Egrettaeulophotes）、白鹭（Egrettagarzetta）和池鹭（Ardeolabacchus）的繁殖生态，取得了三种鹭的窝卵数、卵的大小、孵化率和成活率等生物学数据，对白鹭进行了鹭鸟卵和雏鸟的识别实验，对白鹭和池鹭研究了窝卵数人为改变对亲鸟繁殖行为及雏鸟成活的影响，对黄嘴白鹭卵进行了人工孵化和雏鸟人工养殖的探讨。 三种鹭的窝卵数分别是白鹭3.69±0.70枚（n=16），池鹭3 ...
刘华全
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Wildlife Letters, Volume 2, Issue 4, Page 169-178, December 2024.Canada Warblers are declining sharply across their range throughout several genetically distinct population units, but habitat preferences are unknown for the population segment occurring in Pennsylvania, United States. We addressed this knowledge gap by leveraging machine learning methods and a large existing acoustic data set to uncover several ...
Chapin Czarnecki +4 more
wiley +1 more source
The Intersexual Differences of Sexual Dimorphism,Feeding Habits and Locomotor Performance at Different Temperatures of Southern Grass Lizard(Takydromus sexlineatus) in Zhaoqing,China [PDF]
, 2014 通过测量头、尾、体和胃检,研究肇庆南草蜥TAkydrOMuS SEXlInEATuS个体发育过程中两性异形和食性差异。南草蜥成体个体两性大小无显著差异,雄性头部显著大于雌性,两性头部大小异形可能是受到性选择压力的结果。雌雄个体食物生态位重叠度较高,两性生态位差异微弱,食性差异与两性头部异形无明显相关性。通过设计13种不同的环境温度,研究体温变化对南草蜥两性个体运动能力表现的影响。结果显示环境温度通过影响体温而影响南草蜥的运动表现,两性个体疾跑速均具有在低体温范围内随体温升高而加快 ...
刘文华 +4 more
core +2 more sources
Wildlife Letters, Volume 2, Issue 4, Page 192-203, December 2024.Knowledge of the reproductive success of organisms in urban habitat fragments is needed to conserve biodiversity in our urbanizing world. We found that differences in nest success among birds in urban forest patches is explained by factors on three distinct spatial scales even across a limited urban development gradient.
Ohad J. Paris, Colin E. Studds
wiley +1 more source
A rapid cryo-sectioning method for micro-structural observation of woody stems [PDF]
[Objective] The woody stems of plants are difficult to obtain satisfactory microscopic image in both freehand and paraffin sections due to the high content of secondary vascular tissues and high degrees of lignification of cell walls.
LIU Wenzhe, MA Fang, SONG Yuxi
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