Results 41 to 50 of about 2,074,354 (157)
Integrative Conservation, Volume 5, Issue 2, Page 192-204, June 2026.We developed an effective ex‐situ conservation approach for an endangered orchid species, Dendrobium sinominutiflorum. A compatible fungal strain Tulasnella sp. was obtained by using in‐situ seed baiting technique. The Symbiotic germination with Tulasnella sp. significantly promotes seed germination and seedling growth.
Han‐Xiao Huang +6 more
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Shuitu Baochi Xuebao, 2005 在塔克拉玛干沙漠腹地特殊的生态条件下,通过植物固沙试验,对植物固沙中重要环节的植物种选择、配置、造林密度和造林季节以及合理灌溉问题进行了研究,并对不同灌溉条件下沙地盐分积累状况,以及对植物生长发育的影响进行了比较深入的研究。指出用矿化度>7.41g/L的咸水灌溉,对耐盐性较弱的固沙灌木的生长发育有限制作用。用矿化度<4.13g/L的咸水灌溉,在沟灌条件下对一般固沙灌木生长发育在短期内没有不利影响。而在滴灌条件下,林地盐分积累有逐年增加的趋势,这对固沙灌木的生长发育有一定的影响 ...
赵存玉 陈广庭 王涛
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European Policy Analysis, Volume 12, Issue 3, Summer 2026.ABSTRACT Taking a perspective that combines policy studies and comparative law, this article examines how European University Alliances (EUAs), originating from the European Universities Initiative (EUI), dynamically challenge the national legal frameworks for higher education and traditional notions of institutional autonomy. The article finds the EUI
Hedwig Unger
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Functional Ecology, Volume 40, Issue 4, Page 800-815, April 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Studies have shown that organisms may adjust metabolic rates in response to thermal variability, highlighting metabolic plasticity as a key adaptive mechanism. Understanding the extent of metabolic plasticity of an organism is key to predicting its adaptation to climate
Qian Hu +6 more
wiley +1 more source
, 2009 对连续3年人工养殖的暗纹东方鲀的体重、体长、肝重、肝体系数、性腺系数和肥满度等指标进行分析,并用体长、体重相关式W=aLb进行拟合,研究其生长、发育情况.结果表明:池养暗纹东方鲀体长与体重的相关式为W=0.0557L2.9029,性成熟前肝脏与体长的相关式为W=0.0033L3.1875,肥满度为0.05±0.01,明显高于野生暗纹东方鲀.通过对性腺系数和肝体系数的分析得出,池养暗纹东方鲀如果培育良好 ...
吴旭, 李钟杰, 严美姣
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四川大学学报. 自然科学版, 2001 作者在室内控温条件下 ,研究了具瘤长须螨 (Agistemusexsertus)的生长发育、繁殖及捕食习性 .研究结果表明 ,其生长发育历期长短与温度有密切关系 ,全生育期发育起点为 6 .8℃ ,需有效积温 2 82 .6日度 ,每雌平均卵量及内禀增长能力均受到温度的制约 ,日平均卵量与雌成螨的年龄有关 .该螨可捕食叶螨的各种虫态 ,但对螨卵有明显的选择捕食习性 ,各温度下的功能反应参数表明 ,30 ...
岳碧松, 邹方东, 徐柳
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Hobbyist preferences for pet freshwater turtles
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract The burgeoning pet trade is a primary threat to wild freshwater turtles worldwide. Although the risks from commercial exploitation of turtles have been discussed widely, there is little empirical research on preferences for pet turtles from a hobbyists’ perspective.
Jingjing Zhao +7 more
wiley +1 more source
, 1986 短尾秀体溞(Diaphanosoma brachyurum)是东湖6—9月的优势种群。作者在实验室恒温条件下,观察了它的发育与生长。这种溢的卵与胚胎发育时间随温度升高而缩短。卵与胚胎发育时间(D)与温度(T)间的迥归方程为: logD=2.0195-1.3784logT 短尾秀体溞的生长速度随龄数而变化,一般可分为3个时期:幼龄为高速生长期,成龄前期为中速生长期,后期则为缓慢生长期。在25℃时有4个幼龄,10个成龄;而在30、35℃时有3个幼龄,12或11个成龄。幼龄的脱皮频率远大于成龄 ...
黄祥飞
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In vitro culture, cryopreservation, and field reintroduction of the endangered Mingan thistle
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract Current plant conservation efforts are hindered by, for example, poor seed germination, low viability, and insufficient propagation and preservation technologies. To address these problems, we devised an approach to plant conservation that integrates conservation, preservation, and restoration (CPR), which uses advanced in vitro techniques. We
Mukund R. Shukla +4 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 1987 为了解广州市婴儿生长发育与喂养情况,以期为婴幼儿保健提供科学依据,我组从1984年10月起开展自出生至3岁婴幼儿生长发育与喂养情况的观察。现将6个月内的情况小结报告如下:
彭秋香
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