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2 wrz 2011 · The geometric mean of relative abundance indices, G, is increasingly being used to examine trends in biological diversity and to assess whether biodiversity targets are being met. Here, we explore the mathematical and statistical properties of G that make it useful for judging temporal change in biological diversity, and we discuss its ...
21 lip 2017 · Landmark-based geometric morphometrics is a powerful approach to quantifying biological shape, shape variation, and covariation of shape with other biotic or abiotic variables or factors. The resulting graphical representations of shape differences are visually appealing and intuitive.
10 paź 2007 · Because the geometric mean is G≈μ−σ 2 /(2 μ), where μ is the (arithmetic) mean and σ 2 is the variance in absolute fitness, the allele favored by natural selection is the one that best boosts μ while reducing σ 2.
31 sie 2011 · Complex geometry is a feature of both free-living unicellular organisms and cells inside multicellular animals. Where does the geometry of a cell come from? Many of the same questions that arise in developmental biology can also be asked of cells, but in most cases we do not know the answers.
1 gru 2007 · Because the geometric mean is G ≈μ−σ 2 / (2 μ), where μ is the (arithmetic) mean and σ 2 is the variance in absolute fitness, the allele favored by natural selection is the one that best boosts μ while reducing σ 2.
1 sty 2020 · Here we review the building blocks of modern geometric morphometrics: the representation of organismal geometry by landmarks and semilandmarks, the computation of shape or form variables via ...
Biological structures run the gamut in sizes from the nanometer scale of the individual macromolecules of life all the way up to the gigantic cyanobacterial blooms in the ocean that can be seen from satellites.
