A5058628051- Evolution and Genetic Dynamics
- Plant and animal studies
- Evolutionary Game Theory and Cooperation
- Ecology and Vegetation Dynamics Studies
- Physiological and biochemical adaptations
- Fish Ecology and Management Studies
- Olfactory and Sensory Function Studies
- Genetic diversity and population structure
- Algal biology and biofuel production
- Biochemical Analysis and Sensing Techniques
- Mathematical and Theoretical Epidemiology and Ecology Models
- Fungal and yeast genetics research
- Microbial Community Ecology and Physiology
- Protist diversity and phylogeny
- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine and coastal ecosystems
- Animal Ecology and Behavior Studies
- Aquatic Invertebrate Ecology and Behavior
- Insect and Arachnid Ecology and Behavior
- Evolution and Science Education
- Marine Biology and Ecology Research
- Advanced Thermodynamics and Statistical Mechanics
- Fermentation and Sensory Analysis
- Advanced Chemical Sensor Technologies
- Ocean Acidification Effects and Responses
McGill University
2016-2025
Sheffield Hallam University
2023
University of Manchester
2022
UNSW Sydney
1998-2020
Institute for Biodiversity
2020
Commonwealth Scientific and Industrial Research Organisation
1989-2018
University of Oxford
2004-2018
BioMed Central (United Kingdom)
2016
Gray's Inn
2016
Google (United States)
1985-2016
A genetic interaction network containing approximately 1000 genes and 4000 interactions was mapped by crossing mutations in 132 different query into a set of 4700 viable gene yeast deletion mutants scoring the double mutant progeny for fitness defects. Network connectivity predictive function because often occurred among functionally related genes, similar patterns tended to identify components same pathway. The exhibited dense local neighborhoods; therefore, position on partially is other...
This paper identifies the effects of different types reproductive cost on pattern life histories. By I mean generally deleterious effect present reproduction future survival or fecundity both. My approach is first to discover circumstances in which at a given age should be maximal, and then investigate conditions under zero; this leads discussion semelparity later optimal maturity. When all entries table are independent one another there no cost, it can shown that unlikely evolve if maturity...
Most flowers are bisexual in function, but counting secondary allocation to attractive structures such as the corolla equally male and female leads paradoxical conclusion that plants bearing perfect invariably allocate much more than function. A method of calculating gender floral is described, it speculated this predominantly male. Observations experiments with natural populations herbs, designed test hypothesis gave following major results, (i) Insects visit larger frequently ( Fragaria ),...
The ubiquity of global change and its impacts on biodiversity poses a clear urgent challenge for evolutionary biologists. In many cases, environmental is so widespread rapid that individuals can neither accommodate to them physiologically nor migrate more favourable site. Extinction will ensue unless the population adapts fast enough counter rate decline. According theory, whether populations be rescued by evolution depends upon several crucial variables: size, supply genetic variation,...
The patterns of abundance generated by a simple stochastic birth-death-immigration model are described in order to characterize the diversity neutral communities ecologically equivalent species. Diversity is species number S and variance frequency or log q∼. distribution very generally lognormal, skewed left immigration resembling descriptions natural communities. Increased community size always cause increase. Their effect on q∼ more complicated, but given biologically reasonable...
Dispersal and previous exposure to stress help yeast adapt highly stressful environments.
A novel class of antibiotics based on the antimicrobial properties immune peptides multicellular organisms is attracting increasing interest as a major weapon against resistant microbes. It has been claimed that cationic exploit fundamental features bacterial cell so resistance much less likely to evolve than in case conventional antibiotics. Population models evolutionary genetics have cast doubt this claim. We document experimental evolution peptide through continued selection laboratory....
Populations that experience severe stress may avoid extinction through adaptation by natural selection. This process is called evolutionary rescue and has been studied under different names in medicine, agriculture, conservation biology. It a component of the emerging field eco-evolutionary dynamics, which investigates how ecological attributes species evolve rapidly strong Its distinguishing feature to combine concept relative fitness with absolute synthetic theory persistent adaptation....
Abstract We discuss three interlinked issues: the natural pace of environmental change and adaptation, likelihood that a population will adapt to potentially lethal change, adaptation elevated CO 2 , prime mover global change. 1. Environmental variability is governed by power laws showing ln difference in conditions increases with elapsed time at rate 0.3–0.4. This leads strong but fluctuating selection many populations. 2. The effect repeated adverse on mean fitness depends its frequency...
Variation in the physical environment was investigated at scales of 0.1-50 m understorey a southern Quebec forest, dominated by Acer saccharum and Fagus grandifolia, to determine if spatial heterogeneity necessary account for evolution maintenance genetically diverse populations forest plants exists this old-growth forest. To characterize during late summer, soil pH availability K + NO 3 − ions solution were measured (...)
We investigated the dynamics of adaptation unicellular chlorophyte Chlamydomonas reinhardtii to new and hostile conditions growth provided by novel carbon substrates in dark. The experiment was designed contrast perennially asexual lines with that had experienced one or more sexual episodes. All were capable adapting environment. lines, however, showed greater over course experiment, especially complex environments. Moreover, effect sex on increased number successive time-course initially...
The diversity of specialized cell types ('complexity') is estimated for a wide range multicellular organisms. Complexity increases with size, independently phylogeny. This interpreted in economic terms as the consequence greater degree cooperative division labour within larger entities. rate increase complexity size less case (cell bodies) than analogous competitive (species communities). atttributed to inutility single cells whose goods must be shared among all many large organism. Major...
Whether evolution will be rapid enough to rescue declining populations depend upon population size, the supply of genetic variation, degree maladaptation and historical direction selection. We examined whether level environmental stress experienced by a prior abrupt change affects probability evolutionary (ER). Hundreds two species yeast, Saccharomyces cerevisiae paradoxus were exposed range sublethal concentrations salt for approximately hundred generations before transfer concentration...
We report an experiment designed to identify the effect of elevated CO2 on species phytoplankton in a simple laboratory system. Major taxa differ their ability take up CO2, which might lead predictable changes growth rate and thereby shifts composition communities response rising CO2. Six belonging three major (cyanobacteria, diatoms chlorophytes) were cultured atmospheres whose concentration was gradually increased from ambient levels 1000 parts per million over about 100 generations then...