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Plant fitness in a rapidly changing world
Plant fitness in a rapidly changing world

... Fig. 1 Climate change could disrupt local adaptation. Climate change exposes natural populations to novel combinations of climatic and nonclimatic conditions, which likely causes fitness landscapes to shift. Migrants that disperse to upslope elevations or poleward latitudes could remain within their ...
Population genetics, food-plant specialization, and local
Population genetics, food-plant specialization, and local

... The genetic differentiation and divergence in plant secondary chemistry among foodplant populations can potentially cause differential natural selection among herbivore populations that may lead to the genetic differentiation of populations (Gols et al. 2008, Magalhaes et al. 2011). Furthermore, the ...
19-Population ecology
19-Population ecology

... that are distributed densely, or sparsely. There are also populations with small numbers of individuals that may be dense or very sparsely distributed in a local area. Population size can affect potential for adaptation because it affects the amount of genetic variation present in the population. De ...
Predator-prey-code
Predator-prey-code

Species vs. Ecosystem Recovery
Species vs. Ecosystem Recovery

... manageable size with key experts ! Intensive population assessment and monitoring can be undertaken for all known sites where it is still extant ! Recovery efforts can be more easily identified and implemented and can focus on key populations for species survival. ...
Populations Notes PPT
Populations Notes PPT

Reading Quiz - AP Environmental Science
Reading Quiz - AP Environmental Science

... 7. A short-distance migratory bat species pollinates cactus plants in northern Mexico on its way to southern Arizona, where it spends the summer eating insects and reproducing. Farmers spraying pesticides affect these bats, which eat the insects and also feed them to their young. This scenario coul ...
Community ecology and dynamics
Community ecology and dynamics

Flow of genetic information DNA --> RNA -
Flow of genetic information DNA --> RNA -

... deposited in the HTG division. A typical HTG record might consist of all the first pass sequence data generated from a single cosmid, BAC, YAC, or P1 clone which together comprise more than 2 kb and contain one or more gaps. A single accession number is assigned to this collection of sequences and e ...
Impacts of biological invasions: what`s what and - UNIV-TLSE3
Impacts of biological invasions: what`s what and - UNIV-TLSE3

... from the great explorations until the early 20th century, non-native species introduced by acclimatization societies were considered ‘exotic’ curiosities, often viewed as a resource [11]. Today, some still see many introduced populations as assets, because of aesthetic properties, popularity as orna ...
WHY LINK SPECIES AND ECOSYSTEMS?
WHY LINK SPECIES AND ECOSYSTEMS?

... nutrient retention and energy flow. Biotic interactions such as the replacement of nonfixers by fixers, competition for N between producers and decomposers, and grazing are at the heart of changes in system state. But this static view does not consider the influence of disturbances (floods and dryin ...
The dnrM gene in Streptomyces peucetius contains a
The dnrM gene in Streptomyces peucetius contains a

... elongation (70 "C, 90 s). Amplification products were bluntended with Klenow and 0.1 mM dNTPs, separated by agarose gel electrophoresis, and purified with Qiaex resin (Qiagen). The resulting DNA fragment was ligated into M13mp18 and 19 for sequencing. Expression of dnrM in E. coli. The GST gene fusi ...
Section 4: Population Samplings
Section 4: Population Samplings

... Competition- One of the biological interactions that can limit population growth; occurs when two species vie with each other for the same resource. Commensalism- A symbiotic relationship in which one species benefits and the other is not affected. Death rate- The ratio between deaths and individual ...
Anti-beta-Galactosidase, Rabbit IgG Fraction
Anti-beta-Galactosidase, Rabbit IgG Fraction

... The Escherichia coli gene lacZ encoding β-galactosidase is an important reporter gene for detecting the expression of recombinant genes in animal cells. In situations where enzymatic detection of β-galactosidase is not practical, anti–β-galactosidase antibody has been widely used. Anti–β-galactosida ...
Population Growth
Population Growth

... are two other examples of density-dependent factors. Density-Independent Factors  Density-independent factors are limiting factors whose influence is not affected by population density. Catastrophic events such as floods, fires, and landslides are considered density-independent factors. It does not ...
Speciation
Speciation

... - Extremely good at what they do, but vulnerable to change • Generalists = species with broad niches that can use a wide array of habitats and resources - Able to live in many different places Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings ...
WB Ecosystems
WB Ecosystems

... hierarchy. ◆ A species is a group of closely related organisms that can reproduce with one another. ◆ All the members of a species within an ecosystem are referred to as a population. ◆ Populations of different species that interact in a specific ecosystem form a community. ● ...
On the evolutionary ecology of species` ranges - People
On the evolutionary ecology of species` ranges - People

... experience selection favouring dispersal, thus accelerating the rate of invasion. Given genetic variation in dispersal rates, individuals with higher dispersal rates will tend to be found in increasing frequency near the range limits (simply because they move more), hence the rate of range expansion ...
Slide 1
Slide 1

Competition Theory, Hypothesis-Testing, and Other Community
Competition Theory, Hypothesis-Testing, and Other Community

... everydaylife, "by buildinga convincingcase forthe fact" (p. 583), throughhis native abilities, common sense, and experience. In everydaylife, he feels, we rarelyif ever adhere to formalrules in constructinga convincingcase, so it is rarelyifever appropriateforscientiststo abide by formalrules. I am ...
Lesson Overview
Lesson Overview

... Ecology and Economics Economics is concerned with interactions based on money. Economics and ecology share the same word root oikos (economics). Indeed, human economics and ecology are linked. Humans live within the biosphere and depend on ecological processes to provide such essentials as food and ...
Mathematical Challenges in Spatial Ecology, Volume 48, Number 11
Mathematical Challenges in Spatial Ecology, Volume 48, Number 11

... value in E . The dynamics of the model are described by rate functions that indicate how a site changes its state based on the current states of sites in a local neighborhood. The rate functions define exponentially distributed times, and we say that a change occurs at rate µ if the waiting time T f ...
5-1 How Populations Grow
5-1 How Populations Grow

Patterns of Biodiversity III
Patterns of Biodiversity III

... seasons. Also, the planet was much drier over all during the glacial periods – even the tropical rainforests were reduced to islands with the only large expanses driven by rain shadow effects. However, there is no doubt that these droughts were not as sever as glaciers. And, based on niche measureme ...
Topic 4 - OoCities
Topic 4 - OoCities

... could, which allowed them to reproduce more moths with the genes for speckled color. Then, the trees began to get covered in suit due to the industrialization, and the black moth was able to be more camouflaged than the speckled moths. Because of this more black moths than speckled moths evaded pred ...
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Molecular ecology

Molecular ecology is a field of evolutionary biology that is concerned with applying molecular population genetics, molecular phylogenetics, and more recently genomics to traditional ecological questions (e.g., species diagnosis, conservation and assessment of biodiversity, species-area relationships, and many questions in behavioral ecology). It is virtually synonymous with the field of ""Ecological Genetics"" as pioneered by Theodosius Dobzhansky, E. B. Ford, Godfrey M. Hewitt and others. These fields are united in their attempt to study genetic-based questions ""out in the field"" as opposed to the laboratory. Molecular ecology is related to the field of Conservation genetics.Methods frequently include using microsatellites to determine gene flow and hybridization between populations. The development of molecular ecology is also closely related to the use of DNA microarrays, which allows for the simultaneous analysis of the expression of thousands of different genes. Quantitative PCR may also be used to analyze gene expression as a result of changes in environmental conditions or different response by differently adapted individuals.
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