Results 41 to 50 of about 512,434 (294)

Past and future of a century old Citrus tristeza virus collection: a California citrus germplasm tale. [PDF]

open access: yes, 2013
Citrus tristeza virus (CTV) isolates collected from citrus germplasm, dooryard and field trees in California from 1914 have been maintained in planta under quarantine in the Citrus Clonal Protection Program (CCPP), Riverside, California. This collection,
Georgios eVidalakis   +14 more
core   +2 more sources

Changes in taxonomic and phylogenetic diversity in the Anthropocene [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2020
To better understand how ecosystems are changing, a multifaceted approach to measuring biodiversity that considers species richness (SR) and evolutionary history across spatial scales is needed. Here, we compiled 162 datasets for fish, bird and plant assemblages across the globe and measured how taxonomic and phylogenetic diversity changed
Daijiang Li   +5 more
openaire   +2 more sources

Global priorities for conservation across multiple dimensions of mammalian diversity [PDF]

open access: yes, 2017
Conservation priorities that are based on species distribution, endemism, and vulnerability may underrepresent biologically unique species as well as their functional roles and evolutionary histories.
Brum, F. T.   +8 more
core   +1 more source

Temperature sensitivities of aboveground net primary production, species and phylogenetic diversity do not increase with increasing elevation in alpine grasslands

open access: yesGlobal Ecology and Conservation, 2023
Responses of aboveground net primary production (ANPP), species and phylogenetic α- and β-diversity of plant community to a long-term experimental warming are not fully understood in alpine grasslands on the Tibetan Plateau.
Fusong Han, Chengqun Yu, Gang Fu
doaj   +1 more source

The Shapley Value of Phylogenetic Trees [PDF]

open access: yes, 2007
Every weighted tree corresponds naturally to a cooperative game that we call a "tree game"; it assigns to each subset of leaves the sum of the weights of the minimal subtree spanned by those leaves.
Haake, Claus-Jochen   +2 more
core   +3 more sources

Altitudinal biodiversity patterns of seed plants along Gongga Mountain in the southeastern Qinghai–Tibetan Plateau

open access: yesEcology and Evolution, 2019
The mechanisms underlying elevation patterns in species and phylogenetic diversity remain a central issue in ecology and are vital for effective biodiversity conservation in the mountains.
Kuiling Zu   +5 more
doaj   +1 more source

Invasions but not extinctions change phylogenetic diversity of angiosperm assemblage on southeastern Pacific Oceanic islands.

open access: yesPLoS ONE, 2017
We assessed changes in phylogenetic diversity of angiosperm flora on six oceanic islands located in the southeastern Pacific Ocean, by comparing flora from two periods: the pre-European colonization of islands and current times.
Gastón O Carvallo, Sergio A Castro
doaj   +1 more source

The metagenomics of biosilicification: causes and effects [PDF]

open access: yes, 2008
In order to determine the links between geochemical parameters controlling the formation of silica sinter in hot springs and their associated microbial diversity, a detailed characterisation of the waters and of in situ-grown silica sinters was combined ...
D. J. Tobler   +3 more
core   +2 more sources

Optimizing phylogenetic diversity under constraints [PDF]

open access: yesJournal of Theoretical Biology, 2007
Phylogenetic diversity (PD) is a measure of the extent to which different subsets of taxa span an evolutionary tree, and provides a quantitative tool for studying biodiversity conservation. Recently, it was shown that the problem of finding subsets of taxa of given size to maximize PD can be efficiently solved by a greedy algorithm.
Moulton, Vincent   +2 more
openaire   +4 more sources

Spatial Pattern Analysis and Conservation Assessment of Apiaceae in Mongolia

open access: yesPlants
The family Apiaceae, distributed throughout the Northern Hemisphere, is the largest family of angiosperms. However, little is known about the conservation status, diversity, and distribution of Apiaceae species in Mongolia. This study had two main aims: (
Magsar Urgamal   +8 more
doaj   +1 more source

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