Results 261 to 270 of about 512,434 (294)

Phylogenetic diversity and the functioning of ecosystems

Ecology Letters, 2012
Abstract Phylogenetic diversity ( PD ) describes the total amount of phylogenetic distance among species in a community. Although there has been substantial research on the factors that determine community PD , exploration of the ...
Diane S, Srivastava, Marc W, Cadotte, A Andrew M, MacDonald, Robin G, Marushia, Nicholas, Mirotchnick   +4 more
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Functional and Phylogenetic Diversity of Cas10 Proteins

The CRISPR Journal, 2023
Cas10 proteins are large subunits of type III CRISPR RNA (crRNA)-guided surveillance complexes, many of which have nuclease and cyclase activities. Here, we use computational and phylogenetic methods to identify and analyze 2014 Cas10 sequences from genomic and metagenomic databases.
Tanner Wiegand, Royce Wilkinson, Andrew Santiago-Frangos, Mackenzie Lynes, Roland Hatzenpichler, Blake Wiedenheft   +5 more
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Computing Phylogenetic Diversity for Split Systems

IEEE/ACM Transactions on Computational Biology and Bioinformatics, 2008
In conservation biology it is a central problem to measure, predict, and preserve biodiversity as species face extinction. In 1992 Faith proposed measuring the diversity of a collection of species in terms of their relationships on a phylogenetic tree, and to use this information to identify collections of species with high diversity.
Andreas Spillner 0001, Binh T. Nguyen 0002, Vincent Moulton   +2 more
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Modelling phylogenetic diversity

Resource and Energy Economics, 2004
The paper proposes a model for measuring and valuing biodiversity based on evolutionary information, called the phylogenetic tree model. While avoiding the strong restrictions of Weitzman’s [Quart. J. Econ. 107 (1992) 363] “cladistic” approach, the phylogenetic tree model retains much of the mathematical simplicity of the cladistic model. In particular,
Nehring, Klaus, Puppe, Clemens
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A comparative test of phylogenetic diversity indices

Oecologia, 2008
Traditional measures of biodiversity, such as species richness, usually treat species as being equal. As this is obviously not the case, measuring diversity in terms of features accumulated over evolutionary history provides additional value to theoretical and applied ecology.
Oliver, Schweiger, Stefan, Klotz, Walter, Durka, Ingolf, Kühn   +3 more
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Phylogenetic Diversity

1999
Abstract In the previous two chapters we examined the distribution of language diversity across the globe and through time. In this chapter we shift attention to diversity at a different level, that of the family of languages. As I pointed out in Section 1.3, there is no necessary correlation between diversity of languages and diversity ...
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Phylogenetic Diversity of LHRH

1987
Early studies suggested mammalian hypothalamic luteinizing hormonereleasing hormone (here referred to as gonadotropin-releasing hormone (GnRH)) was a unique molecular form, but research over the past eight years established that there is considerable diversity in the structure of the corresponding releasing hormone in other species.
J. A. King, R. P. Millar
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Phylogenetic skew: an index of community diversity

Molecular Ecology, 2015
AbstractThe distribution of divergence times between member species of a community reflects the pattern of species composition. In this study, we contrast the species composition of a community against the meta‐community, which we define as the species composition of a set of target communities.
Hungyen, Chen, Kwang-Tsao, Shao, Hirohisa, Kishino   +2 more
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Maximizing the phylogenetic diversity of seed banks

Conservation Biology, 2014
Abstract Ex situ conservation efforts such as those of zoos, botanical gardens, and seed banks will form a vital complement to in situ conservation actions over the coming decades. It is therefore necessary to pay the same attention to the biological diversity represented in ex situ conservation facilities as is often paid to ...
Kate E, Griffiths, Sharon T, Balding, John B, Dickie, Gwilym P, Lewis, Tim R, Pearce, Richard, Grenyer   +5 more
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Phylogenetic diversity and ecology of environmental Archaea

Current Opinion in Microbiology, 2005
On the basis of culture studies, Archaea were thought to be synonymous with extreme environments. However, the large numbers of environmental rRNA gene sequences currently flooding into databases such as GenBank show that these organisms are present in almost all environments examined to date. Large sequence databases and new fast phylogenetic software
Charles E, Robertson, J Kirk, Harris, John R, Spear, Norman R, Pace   +3 more
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