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Speciation

open access: yesCold Spring Harbor Perspectives in Biology
What drives the emergence of new species has fascinated biologists since Darwin. Reproductive barriers to gene flow are a key step in the formation of species, and recent advances have shed new light on how these are established. Genetic, genomic, and comparative techniques, together with improved theoretical frameworks, are increasing our ...
Peichel, C.L.   +4 more
openaire   +5 more sources

Plant Speciation [PDF]

open access: yesScience, 2007
Like the formation of animal species, plant speciation is characterized by the evolution of barriers to genetic exchange between previously interbreeding populations. Prezygotic barriers, which impede mating or fertilization between species, typically contribute more to total reproductive isolation in plants than do postzygotic barriers, in which ...
Loren H, Rieseberg, John H, Willis
openaire   +2 more sources

Remediation of azo-dyes based toxicity by agro-waste cotton boll peels mediated palladium nanoparticles

open access: yesJournal of Saudi Chemical Society, 2020
The present study reports an environmental benign route for the synthesis of palladium nanoparticles (Pd NPs) using agro-waste empty cotton boll peels aqueous extract for the first time.
Boya Palajonnala Narasaiah   +1 more
doaj   +1 more source

Mechanisms of Speciation [PDF]

open access: yesInternational Journal of Evolutionary Biology, 2012
“Speciation” was largely “speculation” two decades ago, at least with respect to a detailed and comprehensive mechanistic understanding of the origin of new species. Despite elegant classical work examining the genetic basis of interspecific differences and reproductive isolation and complementary studies of the ecological factors that can contribute ...
Sawamura, Kyoichi   +3 more
openaire   +2 more sources

Cadmium Speciation Distribution Responses to Soil Properties and Soil Microbes of Plow Layer and Plow Pan Soils in Cadmium-Contaminated Paddy Fields

open access: yesFrontiers in Microbiology, 2021
Cadmium (Cd) speciation ratio in arable land determines the Cd exposure risk and Cd uptake in crops. However, the driving mechanisms of Cd speciation change on the vertical scale of paddy fields remain poorly understood.
Xiaodong Hao   +11 more
doaj   +1 more source

Biogenic Ceria Nanoparticles (CeO2 NPs) for Effective Photocatalytic and Cytotoxic Activity

open access: yesBioengineering, 2020
Ceria nanoparticles (CeO2 NPs) are generally considered in various functional applications, such as catalysts in fuel cells, sensors, and antioxidant and oxidase-like enzymes in the biological environment.
Siripireddy Balaji   +3 more
doaj   +1 more source

Invasive species and biodiversity crises: testing the link in the late devonian. [PDF]

open access: yesPLoS ONE, 2010
During the Late Devonian Biodiversity Crisis, the primary driver of biodiversity decline was the dramatic reduction in speciation rates, not elevated extinction rates; however, the causes of speciation decline have been previously unstudied.
Alycia L Stigall
doaj   +1 more source

Ability of Current Phylogenetic Clustering to Detect Speciation History

open access: yesFrontiers in Ecology and Evolution, 2021
Phylogenetic diversity aims to quantify the evolutionary relatedness among the species comprising a community, using the phylogenetic tree as the metric of the evolutionary relationships.
Athanasios S. Kallimanis   +4 more
doaj   +1 more source

SPECIATION AND MACROEVOLUTION [PDF]

open access: yesEvolution, 1982
Species and higher taxa represent, phenomenologically, two very different levels in the hierarchical organization of the living world. Ever since there has been a concept of evolution, there has been the problem how one can get from the species level to that of the higher categories.
openaire   +2 more sources

Trace metals in the open oceans: speciation modelling based on humic type ligands [PDF]

open access: yes, 2011
The speciation of trace metals in the oceans is typically explained by invoking the concept of metal binding to specific organic ligands, but a lack of detailed knowledge about the ligands has impeded the formulation of comprehensive models to predict ...
Stockdale, Anthony   +7 more
core   +1 more source

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