Results 61 to 70 of about 143,176 (215)

DYNAMIC SPECIATION PROCESSES IN THE MEDITERRANEAN ORCHID GENUS OPHRYS L. (ORCHIDACEAE) [PDF]

open access: yes, 2011
GENERAL INTRODUCTION CHAPTER 1: MULTI-LOCUS NUCLEAR GENE PHYLOGENY OF THE SEXUALLY DECEPTIVE ORCHID GENUS OPHRYS L. (ORCHIDACEAE) CHAPTER 2: ANALYSIS OF VARIATION AND SPECIATION IN THE OPHRYS SPHEGODES SPECIES COMPLEX CHAPTER 3: FLORAL ISOLATION IS ...
Breitkopf, Hendrik
core  

Synchrotron XRF Imaging Reveals Manganese Accumulation in the Golgi and Post‐Synapses of Neurons and Enhanced Uptake in Astrocytes

open access: yesAdvanced Science
Manganese is an essential trace metal, but excessive exposure causes neurotoxicity, including parkinsonian syndromes, cognitive deficits, and may contribute to neurodegenerative diseases.
Ines Kelkoul   +12 more
doaj   +1 more source

Speciation and development

open access: yesEvolution & Development, 2023
AbstractUnderstanding general principles about the origin of species remains one of the foundational challenges in evolutionary biology. The genomic divergence between groups of individuals can spawn hybrid inviability and hybrid sterility, which presents a tantalizing developmental problem.
openaire   +2 more sources

Investigating the molecular basis of adaptation and speciation in divergent populations [PDF]

open access: yes, 2013
The creation of biodiversity involves the evolution of new species. Recent trends in the study of speciation have increased the emphasis on the role of ecology in adaptation and the evolution of reproductive isolation.
Smith, Gilbert
core  

Electroactive speciation studies for metal ion sensing [PDF]

open access: yes, 2006
Chemical speciation is an important factor in understanding the role of metals in the environment. Bioavailability of trace metals is influenced by the degree of the labile fraction of the metal that is readily available for interaction with a cell ...
Knell, Mark Α., Knell, Mark ?
core  

Solid-phase phosphorus speciation in Saharan Bodélé depression dusts and source sediments [PDF]

open access: yes, 2014
Phosphorus (P) is one of the most important limiting nutrients for the growth of oceanic phytoplankton and terrestrial ecosystems, which in turn contributes to CO2 sequestration. The solid-phase speciation of P will influence its solubility and hence its
Cibin, G   +13 more
core   +1 more source

Speciation and endemism under the model of island biogeography [PDF]

open access: yes, 2009
: Speciation has been considered as a primary process contributing to species diversity, but its contribution to the diversity of local communities has not been fully appreciated. Based on the theory of classic island biogeography, we derived a model for
Chen, X. Y., He, F. L.
core   +2 more sources

Stability and the competition-dispersal trade-off as drivers of speciation and biodiversity gradients

open access: yesFrontiers in Ecology and Evolution, 2015
The geography of speciation is one of the most contentious topics at the frontier between ecology and evolution. Here, building on previous hypotheses, I propose that ecological constraints on species co-existence mediate the likelihood of speciation ...
Loïc ePellissier
doaj   +1 more source

Adaptive speciation: Epilogue [PDF]

open access: yes, 2004
Unraveling the origin of biodiversity is fundamental for understanding our biosphere. This book clarifies how adaptive processes, rather than geographic isolation, can cause speciation.
Tautz, D.   +5 more
core   +1 more source

Predictability, an Orrery, and a Speciation Machine: Quest for a Standard Model of Speciation. [PDF]

open access: yes
Accurate predictions are commonly taken as a hallmark of strong scientific understanding. Yet, we do not seem capable today of making many accurate predictions about biological speciation. Why?
Roesti, Hannes   +6 more
core   +1 more source

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