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相关概念视频

Ecological Disturbance02:26

Ecological Disturbance

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An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.
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Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
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All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
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The confirmation bias is the tendency to focus on information that confirms our existing beliefs and ignore information that is inconsistent with our expectations. For example, if you think that your professor is not very nice, you notice all of the instances of rude behavior exhibited by the professor while ignoring the countless pleasant interactions he is involved in on a daily basis. Have you ever fallen prey to the confirmation bias, either as the source or target of such bias?
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Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now? 
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Bias refers to any tendency that prevents a question from being considered unprejudiced. In research, bias occurs when one outcome or answer is selected or encouraged over others in sampling or testing. Bias can occur during any research phase, including study design, data collection, analysis, and publication.
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PCR偏差影响微生物组生态分析

Dharmik R Rathod1, Justin D Silverman1,2,3,4

  • 1College of Information Sciences and Technology, Penn State University, University Park, Pennsylvania, United States of America.

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概括
此摘要是机器生成的。

聚合酶链反应 (PCR) 放大偏差影响微生物生态学的研究. 扰乱不变多样性测量是强大的,但像香农多样性这样的常见指标是敏感的,需要仔细选择才能获得可靠的结果.

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科学领域:

  • 微生物生态学 微生物生态学
  • 分子生物学分子生物学
  • 生物信息学是一种生物信息学.

背景情况:

  • 聚合酶连锁反应 (PCR) 对于基于安普利康的微生物社区概况是必不可少的.
  • PCR放大偏差,由诸如初始器不匹配和序列属性等因素引起,是已知的问题.
  • 对于PCR偏差对生态多样性指标的影响尚不清楚.

研究的目的:

  • 综合评估PCR偏差如何影响α-多样性和β-多样性分析.
  • 为了确定对PCR诱导偏差敏感或强大的多样性指标.
  • 为微生物生态学中偏差纠正策略提供指导.

主要方法:

  • 对多样性指标的PCR偏差影响进行全面评估.
  • 分析样本内部 (α) 和样本间 (β) 的多样性.
  • 利用理论和经验的洞察力来研究生态分析中的偏差变化.

主要成果:

  • 扰乱不变多样性测量不受PCR偏差的影响.
  • 广泛使用的指标,如Shannon多样性和加权-Unifrac,显示出对PCR偏差的敏感性.
  • 在不同的生态分析和社区结构中,PCR诱导的偏见有所不同.

结论:

  • 选择多样性指标对于基于PCR的精确微生物生态学至关重要.
  • 在处理PCR偏差时,某些多样性指标比其他指标更可靠.
  • 为应用偏差校正方法提供了指导,以提高多样性分析的可靠性.