Results 141 to 150 of about 20,824 (277)
Long-term changes of diatom community in the frequent HAB areas of the East China Sea and the morphological response of typical species to physio-chemical variables [PDF]
硅藻是浮游植物的主要组成类群,与浮游植物群落演替和赤潮发生密切相关。我国长江口及临近海域近十几年来频发赤潮,其发生机制比较复杂,为了探讨硅藻长周期变化与赤潮发生的关系,本研究于2002年至2013年间,通过藻华973航次在长江口及临近海域典型赤潮高发区分别进行19个航次的浮游植物拖网和水样采集,共获得浮游植物样品3417个,进行了硅藻种类组成与数量分析,研究了其年际变化、季节变化和地理分布及其受控因素。 一般情况下,浮游植物群落中硅藻在种类和数量上都占优势地位 ...
刘昱涵
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Abstract Chinese consumer demand for ivory threatens vulnerable African elephant populations, despite long‐standing efforts to combat the illegal wildlife trade. Behavioural science approaches have been proposed to address these systemic behaviours. However, their robust use remains uncommon in demand management interventions.
Molly R. C. Brown +3 more
wiley +1 more source
Study on dinoflagellate cysts of Holocene and their environmental significance in Bohai Sea [PDF]
甲藻是一种非常古老的真核生物,许多甲藻能产生休眠孢囊。沉积物中的甲藻休眠孢囊对反映海水温度、盐度、营养盐及海平面变化等环境因子具有非常重要的意义,其还可以揭示赤潮发生的潜能。渤海是我国半封闭的内海,受地形地貌、气候、海洋水文及人类活动影响较为显著。本文对渤海表层及柱状沉积物中的甲藻孢囊进行研究,表层样结合现代数理统计软件细致地分析了甲藻孢囊的种类组成、分布特征及与环境因子的关系。柱状样结合地层年代通过优势种在各层位的含量变化,探讨了渤海近8000aBP年以来海水的温度、盐度 ...
郝赛赛
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Read the free Plain Language Summary for this article on the Journal blog. Abstract Non‐structural carbohydrates (NSC) are critical mediators of plant adaptation to fluctuating light environments. They are tightly coordinated with plant economic strategy, that is, leaf economics spectrum (LES) and root economics spectrum (RES).
Lulu Xie +6 more
wiley +1 more source
A study on the breeding-site fidelity of Chinese egret——based on stable carbon and nitrogen isotopic analyses [PDF]
稳定同位素技术因具有示踪、整合和指示等多项功能,以及检测快速、结果准确等特点,近二十几年来被作为一种比较成熟的技术应用于生态学及环境科学的各个领域。例如,研究生物与环境的相关关系,检测环境污染,研究动物的食性、食物构成、营养级层次、食物链及食物网结构,动物迁徙活动,农产品溯源,食品安全等方面。同时,稳定同位素技术在动物生态学研究,尤其是鸟类生态学研究中发挥了巨大的作用,解决了很多传统方法无法解决的难题。例如鸟类食性选择、迁徙路线及中途停留地选择、繁殖地忠实度等问题上。至此 ...
于小桐
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Underrepresentation of bats in Africa's protected areas
Abstract Biodiversity is severely threatened globally, with habitat loss and other human pressures accelerating species extinctions. Protected areas (PAs) are a critical conservation tool; however, their effectiveness in safeguarding many taxa, such as bats, remains unclear.
Cecilia Montauban +9 more
wiley +1 more source
萼花臂尾轮虫(Brachionus calyciflorus Pallas)休眠卵在不同萌发条件下累积萌发率的结果显示:保存在休眠卵形成的原液中,温度为20℃-30℃时萌发率均较高,30℃时用过滤湖水萌发时的萌发率最高(65%);保存在无机培养液中的休眠卵,用曝气自来水萌发时最高,用湖水次之,无机液萌发效果较差20℃和25℃时三种萌发液中的萌发率接近;母体投喂小球藻形成的休眠卵的累积萌发率高于投喂混合藻组,且以过滤湖水为孵化液时效果较佳;累积萌发率与光照时间的长短并无直接关系(P>0.05 ...
杨家新,黄祥飞
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Effects of landscape fragmentation on floodplain fishes as revealed by species–habitat networks
Abstract How species interact with habitat patches is influenced primarily by habitat configuration (e.g., connectivity) and species’ functional traits. As levels of fragmentation increase, identifying the intricate connections between these components is crucial for biodiversity conservation.
Chen Zhang +8 more
wiley +1 more source

