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Species Diversity
Species Diversity

... Indeed, specific identification is not needed for most comparative studies; the individuals collected may simply be identified as taxon 1. taxon 2, and so on, as long as such nomenclature is consistent from collection to collection. If you want to compare diversity indices of different communities o ...
Viability of an endangered population of ortolan buntings: The effect
Viability of an endangered population of ortolan buntings: The effect

... from the estimate altogether. However, unmarked males showing feeding behaviour were included in the low estimate regardless of the time observed. As initial population sizes for the PVA we used the low, mean, and high estimates of total population size for 2004. There was a deficit of females in th ...
Ch.5 population notes-Parikh
Ch.5 population notes-Parikh

... species) vulnerable to disease, etc..- spread easily Diversity among individuals in a population is important to resistance of population as a whole (genetically different) Biological diversity causes ecological stability ...
Community Ecology - Dr. Mufti Sudibyo, M.Si
Community Ecology - Dr. Mufti Sudibyo, M.Si

...  A niche is an organism’s habitat and its way of making a living.  An organism’s niche is reflected by its place in a food web: i.e, what it eats, what it competes with, what eats it.  Each organism has the potential to create niches for others. ...
View PDF - tropecol.com
View PDF - tropecol.com

... together more or less by chance, while if they are not indifferent (i.e. dependent) they will occur together more often or less often than can be expected by chance, which is expressed in terms of Coles index. As we have encountered in this study, many species do not express any significant associat ...
Predation discussion papers:
Predation discussion papers:

... 2. What are the direct vs indirect effects of Pisaster? 3. Examine Figure 1: The feeding relationships at Mukkow Bay. What data supports the assertion that “the food web revolves on a barnacle economy” 4. At Mukkow Bay, what happened to the algae following Pisaster removal? Which species came to dom ...
Chapter 27: Behavioral Ecology
Chapter 27: Behavioral Ecology

pages 36 to 42
pages 36 to 42

... Ecological Area of Rotoehu Forest. An unidentified bat, probably longtailed bat, was recently detected in the Papamoa Hills. Neither species is easy to detect due to their near-exclusive nocturnal behaviour and it is likely they are more widely distributed within the larger and more intact forest ha ...
Population Dynamics of Exotic Insects
Population Dynamics of Exotic Insects

... common occurrence, particularly in cases where species that evolved in other associations are introduced to new areas. This, of course, includes the case of colonization of exotics. 1£ it is a common occurrence it is improbable that identity of ecological niches is involved. Nor does it seem necessa ...
Chapter 21: Community Structure
Chapter 21: Community Structure

... within communities is their relative abundance: in most communities, a few species achieve dominance while most are rare, represented by relatively few individuals  ecologists have portrayed relative abundances in rank-order ...
Behavior and conservation: a bridge too far?
Behavior and conservation: a bridge too far?

... because they influence effective population size (Ne), a measure of the ability of a population to maintain genetic diversity. When mating systems deviate from monogamy to increasing degrees of polygyny or polyandry, Ne declines because fewer males (polygyny) or females (polyandry) contribute genetic ...
PowerPoint Presentation - Natural Selection
PowerPoint Presentation - Natural Selection

... Neck of Giraffe Antibiotic resistance of bacteria Moth color (melanin) Camouflage/Mimics Many sexually selected traits ...
13.1 Ecologists Study Relationships
13.1 Ecologists Study Relationships

Curriculum Vitae - Salamander Genome Project
Curriculum Vitae - Salamander Genome Project

... declines: Population substructure and molecular differentiation in the Yosemite Toad, Bufo Canorus (Anura, Bufonidae) based on SSCP and mtDNA sequence data. Molecular Ecology ...
Threatened Eiders of North America
Threatened Eiders of North America

15 Competition 2009
15 Competition 2009

... 2 species can’t coexist on the same limiting resource. ...
How Will You Build a New Protected Area in Patagonia?
How Will You Build a New Protected Area in Patagonia?

Issue - Pennsylvania Natural Heritage Program
Issue - Pennsylvania Natural Heritage Program

Process error in non-linear, statistical catch-at
Process error in non-linear, statistical catch-at

... as predators and prey, and for whom diet data are available as a time series;  incorporate the predator-prey interactions into an age-based, statistical assessment of the populations simultaneously, and  compare the outcomes between the single-species and multispecies versions of the models repres ...
Making Phylogenetic Trees
Making Phylogenetic Trees

... most phylogenies are constructed with molecular evidence. Cytochrome c is a common large protein found in nearly all organisms. This protein varies, however, in its composition. Table 2 shows how amino acids vary within the protein depending on the species. The amino acids are written in one of the ...
Unit V
Unit V

... 2. Study of how living things interact with each other and with the physical environment 3. Modern ecology not just descriptive, also predictive 4. One goal of ecology is to develop models that explain and predict the abundance of populations. ...
Fish Pop. Biol.
Fish Pop. Biol.

• Life History of Aquatic Organisms
• Life History of Aquatic Organisms

... • Population size = (births + immigration) (deaths + emigration) ...
2007 YRBOOK UNDER
2007 YRBOOK UNDER

... Continental drift and glaciation; Theories of biogeography and biogeographic reconstruction; Phylogeography; Latitudinal gradients in diversity; Interactions of body and population size on diversity and distribution; Island biogeography theory and its applications for conservation Main Outcomes: Lae ...
Flash Summary of MEDPINE 2
Flash Summary of MEDPINE 2

... shock were presented. Silvicultural and regeneration aspects of P. brutia and P. halepensis were deeply reviewed. Shelterwood, clearcutting and strip-clear-cut methods could be applied to P. brutia forests; density and vigour of pine seedlings were both higher when the natural regeneration methods ...
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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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