Results 61 to 70 of about 26,666 (201)
生物编目(biological inventory)主要是调查和收集物种、生态系统以及遗传资源的信息,并建立数据库。数据库能够提供生物多样性和生物资源管理所必需的数据,利用这些数据可以建立生物多样性信息系统,信息系统的目的主要在于利用系统中各种数据库建立有关生物多样性监测和评估模型、生物多样性空间分布及其形成机制模型、关键物种长期种群动态模型 ...
汪松, 解焱
doaj
Automating the analysis of public saliency and attitudes toward biodiversity from digital media
Abstract Measuring public attitudes toward wildlife provides crucial insights into human relationships with nature and helps monitor progress toward Global Biodiversity Framework targets. Yet, conducting such assessments at a global scale presents challenges.
Noah Giebink +8 more
wiley +1 more source
Geographic risks to functional groups of mammals and birds from habitat loss in Mexico
Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás +4 more
wiley +1 more source
为探究圈养梅花鹿(Cervus nippon)肠道菌群的结构、多样性以及肠道菌群组成的性别差异,利用Illumina MiSeq高通量测序平台对10只圈养健康梅花鹿粪便中的细菌16S rRNA V3—V4区扩增子进行PCR扩增,采用生物信息学手段以性别作为分组因素,分析雄、雌圈养梅花鹿肠道菌群的结构、多样性和差异物种。结果显示:在门水平上,圈养梅花鹿肠道菌群的优势菌门为厚壁菌门(Firmicutes;雄性61.69%,雌性58.23%)和拟杆菌门(Bacteroidetes;雄性27.40%,雌性31 ...
史倍宁 +7 more
doaj
Isolation and exopolysaccharide screening of halophiles from Zhoushan Islands(舟山地区嗜盐菌的分离和产胞外多糖菌株的筛选)
对浙江舟山地区近海和盐田的样品进行分离检测.从11份泥样和16份水样中共分离纯化120株嗜盐菌,其中多数为中度嗜盐菌或耐盐菌,颜色以白色为主,其次是红色和黄色,细胞形态多为杆状或球状,革兰氏阴性菌株占81.6%.研究表明,嗜盐菌在该地区具有广泛的分布和一定的多样性.以分离菌株为材料筛选产胞外多糖的菌株,发现19株能产生胞外多糖,其中菌株HS239产量较高.
ZHOUXu-hua(周旭华) +2 more
doaj +1 more source
Abstract There exists a growing suite of technologies that support significant and exciting progress in biodiversity conservation and research. Citizen scientist participation is common in this research and often focuses on data collection and labeling.
Joycelyn Longdon +5 more
wiley +1 more source
研究机场及其周边地区鸟类群落的时空变化规律可为鸟击防范提供科学依据。为了评估鸟击风险等级和制定有针对性的鸟击防范措施,2012年3月~2013年2月,我们采用样线法(共设置8条涵盖净空区树林、水域、农田、村落和灌草丛5种生境类型的样线),对张家界荷花国际机场净空区不同季节的鸟类资源进行了实地调查,并通过比较5种生境中鸟类的物种多样性指数、均匀度指数、物种数和种群密度,分析机场鸟类物种多样性与群落结构时空特征。在荷花机场净空区共记录到92种鸟类,隶属于14目、30科,其中候鸟比例接近50%。春 ...
王海燕 张志强 李益得 李中原 程 军 杨道德
doaj
Abstract The design of experiments to investigate the combined effects of multiple stressors requires exposing target organisms to multiple combinations of stressor doses. Concurrent manipulation of stressors is often infeasible with wildlife, but long‐lasting health effects allow individual health to be used as an integrator of prior stressor exposure.
Enrico Pirotta +24 more
wiley +1 more source

