Results 41 to 50 of about 1,103 (205)
Collective effects of rising average temperatures and heat events on oviparous embryos
Conservation Biology, Volume 38, Issue 4, August 2024.Abstract Survival of the immobile embryo in response to rising temperature is important to determine a species’ vulnerability to climate change. However, the collective effects of 2 key thermal characteristics associated with climate change (i.e., rising average temperature and acute heat events) on embryonic survival remain largely unexplored. We used
Liang Ma +13 more
wiley +1 more source
Changes in the content of ABA, GA3 and carbohydrate in the viviparity of mangrove plants [PDF]
, 2012 应用高效液相色谱法（HPLC）和蒽酮硫酸比色法，对比显胎生红树植物木榄、秋茄，隐胎生红树植物桐花树、白骨壤繁殖器官在花蕾期、种子期、种子萌发早期、种子萌发晚期内源激素GA3、ABA含量以及可溶性糖、淀粉含量的动态变化，探讨胎生发生的可能机制，实验结果如下： 1、四种红树植物繁殖器官不同发育时期内源激素含量的变化 （1）四个发育时期GA3含量变化规律基本相同，从花蕾期到萌发晚期都表现出先升高后降低的趋势：在种子期GA3达到最高值；从花蕾期到种子期GA3含量增幅最大，进入种子萌发早期后GA3含量小幅下降 ...
卢磊
core
Integrating socioeconomic and ecological data into restoration practice
Conservation Biology, Volume 38, Issue 4, August 2024.Abstract Driven by the United Nations Decade on Restoration and international funding initiatives, such as the Mangrove Breakthrough, investment in mangrove restoration is expected to increase. Yet, mangrove restoration efforts frequently fail, usually because of ad hoc site‐selection processes that do not consider mangrove ecology and the ...
Jaramar Villarreal‐Rosas +11 more
wiley +1 more source
, 2007 以鳞片作为鉴定年龄的材料,对龙溪河厚颌鲂(Megalobrama pellegrini)种群开展年龄结构与生长特性的研究。结果表明,厚颌鲂鳞片年轮结构呈疏密切割型,年轮特征显著,可用于年龄鉴定,3~4月是年轮形成高峰时间。种群由0~7龄共8个龄组组成,以低龄个体为主,1~3龄个体占83.14%,体长分布主要集中在130~250 mm间(77.71%)。体质量分布主要集中在50~250 g(64.33%)。群体总性比为♀∶♂=1∶1.03,符合1∶1理论比值。体长和鳞径呈直线关系 ...
李文静 +3 more
core
野生动物学报, 2017 2014年5月至2014年10月间,在青海省海北自治州祁连县野牛沟乡达玉村附近,从动态的角度研究高原鼠兔在其生境地繁殖季节前后血常规、血气和性激素的变化,并与繁殖期间的各种环境因子相关联,探讨鼠兔繁殖策略对环境及行为的响应。结果表明,可将该地区高原鼠兔的繁殖期分为过渡恢复阶段(5月以前); 繁殖旺盛阶段(5月下旬～7月中旬); 繁殖抑制阶段(7月下旬～9月下旬); 繁殖静止阶段(10月及10月以后)4个阶段,不同的繁殖阶段高原鼠兔在体重、繁殖指数、血常规指标、血气指标、睾丸相对重量 ...
谢惠春 罗巧玉 陈 志 马永贵
doaj
People and Nature, Volume 6, Issue 3, Page 1262-1276, June 2024.Abstract Designing conservation interventions for rare species can be hindered by a lack of relevant data. Local ecological knowledge (LEK) has potential to provide rapidly collected, cost‐effective data across large spatio‐temporal scales, but has rarely been used as a source of conservation‐relevant information for the Asian Songbird Crisis. The Blue‐
Rosalind A. Gleave +8 more
wiley +1 more source
野生动物学报, 2008 针对我国野生白头鹤种群濒危现状,我们搜集近15a关于白头鹤的科学研究文献与报道,并将其按种群数量与分布和野外生态学进行归类。分析表明,目前我国白头鹤研究主要集中在种群数量分布调查与越冬生态的研究方面;此外还涉及到食性研究及迁徙等报道;关于白头鹤繁殖生态的生物学信息比较匮乏,尤其是繁殖期巢址生境的选择未见报道,有待于开展深入的研究。
张佰莲, 宋国贤
doaj
Wildlife Letters, Volume 2, Issue 2, Page 73-82, June 2024.Molecular markers are widely used in conservation genetics of wildlife. A total of 15 novel microsatellite loci with high polymorphism of Blue‐crowned laughingthrush were developed in this study. The genetic diversity level of wild individuals was higher than two captive populations including Ocean Park Hong Kong and Nanchang Zoo. The genetic diversity
Xinghe Gao +8 more
wiley +1 more source
野生动物学报, 2013 依据2012年4～5月在漳江口红树林自然保护区及其周边区域对繁殖期鹭科鸟类种类、数量、巢位情况、觅食生境类型调查数据,运用生态位理论,对5种鹭科鸟类的生态位分离进行了分析。结果表明:在漳江口地区繁殖的鹭科鸟类数量共计有2 439只,其中白鹭为该地区的优势种,数量1 422只,占到所有鹭科鸟类的58.29%;鹭科鸟类的巢位表现出明显的水平分布规律和对红树树种的选择性,通过错开繁殖的高峰期,利用不同的食物资源,在不同的时间段觅食以及在不同的生境觅食4个方式,对食物资源进行合理的分配 ...
谭飞, 林英华, 张明海
doaj
Dutch landscapes have lost insect‐pollinated plants over the past 87 years
Journal of Applied Ecology, Volume 61, Issue 6, Page 1323-1333, June 2024.This study implies that Dutch landscapes are losing insect‐pollinated plant species, which is likely due, at least in part, to the decline in pollination services. Our results of quantifying the decline in insect‐pollinated plants support the necessity and urgency of taking conservation initiatives.
Kaixuan Pan +3 more
wiley +1 more source