FracFeed: 全球捕食捕食动物分量的数据库
Mark Novak1, Paige Foust1, Shannon Hennessey1
1Department of Integrative Biology, Oregon State University, Corvallis, Oregon, USA.
Ecology
|January 20, 2026
概括
FracFeed数据库汇编了捕食者饮食调查数据,包括空腹,以评估捕食者能量平衡和养和度. 这个资源有助于理解捕食者-猎物动态和生态系统健康.
科学领域:
- 生态生态学 生态生态学
- 动物学 动物学
- 保护生物学 保护生物学
背景情况:
- 捕食者群体中空腹的比例是个体能量平衡和食率和度的关键指标.
- 了解捕食者与猎物的相互作用对于生态系统健康至关重要,但关于空腹的数据往往被低估.
- FracFeed数据库通过汇编关于捕食动物养调查的现有数据来弥补这一差距.
研究的目的:
- 创建一个全面的数据库 (FracFeed) 捕食者养调查数据,专注于空腹的比例.
- 为研究掠食者-猎物动态,功能反应和生态系统影响的研究人员提供宝贵的资源.
- 鼓励从未来的饮食调查中报告和贡献空腹数据.
主要方法:
- 从4920个饮食调查中收集了1507个种类的数据,包括超过430万个个体.
- 包括来自全球陆地,海洋和淡水生态系统的数据,涵盖1887年至2023年.
- 收集的共同变量数据,如调查方法,地理位置,捕食者分类,体重和饮食组成.
主要成果:
- FracFeed数据库包含大量关于捕食者的食习惯和能量状态指标的数据.
- 它涵盖了广泛的分类学范围,地理分布和历史时期,提供了广泛的生态见解.
- 数据库包括每个调查的详细元数据,增强其分析实用性.
结论:
- FracFeed数据库是生态研究的重要资源,特别是在了解掠食者与猎物的关系和能量动态方面.
- 增加报告和空腹数据的贡献对于扩大数据库的范围和实用性至关重要.
- 该数据库支持各种生态系统和掠食者群体的研究,为保护和生态管理工作做出贡献.
相关概念视频
02:39Predator-Prey Interactions
21.1K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
21.1K
01:50Global Climate Change
28.7K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
28.7K
01:30Introduction to Global Positioning System
480
The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...
480
01:32Subcellular Fractionation
8.6K
The homogenate obtained after cell lysis contains various membrane-bound organelles that can be further separated into pure fractions by subcellular fractionation. These isolates are used to study specific cellular components, analyze localized protein activity, and are even employed in diagnostics. Fractionation is typically achieved using centrifugation methods, the most common being density-gradient and differential centrifugation.
Differential Centrifugation
Differential centrifugation is...
Differential Centrifugation
Differential centrifugation is...
8.6K
01:28Global Regulatory Systems
623
Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
623
01:26Errors in Global Positioning System
345
Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
345