Comparing the genetic population structure of two species of arctic
... resulted in the tundra covering smaller areas (Ehrich et al. 2000). In general, the magnitude of FST estimates depends not only on the level of differentiation among subpopulations but also on the total amount of variation and notably the intra-population variability. Variability in mtDNA sequences ...
... resulted in the tundra covering smaller areas (Ehrich et al. 2000). In general, the magnitude of FST estimates depends not only on the level of differentiation among subpopulations but also on the total amount of variation and notably the intra-population variability. Variability in mtDNA sequences ...
CH. 4 POPULATION ECOLOGY
... – But you will see similar population growth trends in similar economies • Demographic transition is the change in a population from high birth and deaths to low birth and deaths • Developing countries add more people to the world population vs. industrial countries, pg. 103, Table 1 ...
... – But you will see similar population growth trends in similar economies • Demographic transition is the change in a population from high birth and deaths to low birth and deaths • Developing countries add more people to the world population vs. industrial countries, pg. 103, Table 1 ...
68 Field work - Blue Coat Church of England School
... Sampling of plant communities To standardise the areas where biotic and abiotic components of ecosystems are investigated, quadrats and/or transects are usually used and sampling is restricted to the areas of the quadrats or transects. Frame quadrats are metal or wooden frames which form a square of ...
... Sampling of plant communities To standardise the areas where biotic and abiotic components of ecosystems are investigated, quadrats and/or transects are usually used and sampling is restricted to the areas of the quadrats or transects. Frame quadrats are metal or wooden frames which form a square of ...
Word Document
... A total of 107 observations of Atelopus varius have been logged since January of 2005, representing 26 unique individuals. Each individual toad is recognized based on a unique color pattern which is recorded in a population database. Although age-related color changes have been observed in individua ...
... A total of 107 observations of Atelopus varius have been logged since January of 2005, representing 26 unique individuals. Each individual toad is recognized based on a unique color pattern which is recorded in a population database. Although age-related color changes have been observed in individua ...
Global Amphibian Declines: What Have We Done? Outline
... – Embryonic period = 5-6 weeks, duration of exposure is factor in survival Ecological Applications 18: 724-734, Arch. Environ. Contam. Toxicol. 51: 458-466 ...
... – Embryonic period = 5-6 weeks, duration of exposure is factor in survival Ecological Applications 18: 724-734, Arch. Environ. Contam. Toxicol. 51: 458-466 ...
AP Biology Reading Guide Chapter 50 An Introduction To
... science articles. To return to fruit fly mating, a single gene called fru controls male mating behavior. If males lack a functional fru gene (short for fruitless), what happens? 26. And what occurs if females are genetically manipulated to express this gene? Concept 51.4 Selection for individual sur ...
... science articles. To return to fruit fly mating, a single gene called fru controls male mating behavior. If males lack a functional fru gene (short for fruitless), what happens? 26. And what occurs if females are genetically manipulated to express this gene? Concept 51.4 Selection for individual sur ...
AP Bio
... Explain how the transfer of energy is related to biological magnification of toxins. UNIT 6: EVOLUTION Understand the Darwinian theory of evolution through descent with modification. Evaluate morphological & molecular evidence of evolution in fossils & living species. Understand the main causes of m ...
... Explain how the transfer of energy is related to biological magnification of toxins. UNIT 6: EVOLUTION Understand the Darwinian theory of evolution through descent with modification. Evaluate morphological & molecular evidence of evolution in fossils & living species. Understand the main causes of m ...
Exploitative Interactions - Cal State LA
... diversity if the competitive interaction causes the species to partition resources (niche space) more finely ...
... diversity if the competitive interaction causes the species to partition resources (niche space) more finely ...
One elephant at a time
... the way exotic species respond to being repatriated to North American environments. These studies would start with less dramatic species—tortoises, llamas—and would progress to more challenging species like big cats. Many species, such as cheetahs, already exist in captivity in the US; they would be ...
... the way exotic species respond to being repatriated to North American environments. These studies would start with less dramatic species—tortoises, llamas—and would progress to more challenging species like big cats. Many species, such as cheetahs, already exist in captivity in the US; they would be ...
David L .Wilson Chapter 4 Understanding Why We Age We now are
... longer time, as a species, to fix any such errors. By this simplistic analysis, one might conclude mice should live longer than we do! In reality, today’s mice and today’s humans both evolved from a common ancestor, tens of millions of years ago, and our rates of aging have evolved to match other li ...
... longer time, as a species, to fix any such errors. By this simplistic analysis, one might conclude mice should live longer than we do! In reality, today’s mice and today’s humans both evolved from a common ancestor, tens of millions of years ago, and our rates of aging have evolved to match other li ...
adaptation, speciation, and convergence: a hierarchical analysis of
... on broad surfaces near the ground, on twigs, in grassy areas). Detailed functional and behavioral analyses support the hypothesis that the morphological differences between the species—in traits such as hindlimb length and toepad size—are adaptations to the functional demands imposed by living in di ...
... on broad surfaces near the ground, on twigs, in grassy areas). Detailed functional and behavioral analyses support the hypothesis that the morphological differences between the species—in traits such as hindlimb length and toepad size—are adaptations to the functional demands imposed by living in di ...
A General Approach to the Modelling of Trophic Chains
... most ecologists prefer to adjust time series data with empirical models that have no connection to the specific ecological processes (Solow, 1995). For single-species population dynamics, the logistic equation is the basic paradigm, introduced in almost any ecology textbook. It accurately predicts p ...
... most ecologists prefer to adjust time series data with empirical models that have no connection to the specific ecological processes (Solow, 1995). For single-species population dynamics, the logistic equation is the basic paradigm, introduced in almost any ecology textbook. It accurately predicts p ...
Yarnell et al. 2010
... instream habitat • Creates ecological niche partitioning with native species utilizing refugia • More effective when geormorphic diversity provides varied refugia • Reduces extent of exotic species not adapted to limiting conditions ...
... instream habitat • Creates ecological niche partitioning with native species utilizing refugia • More effective when geormorphic diversity provides varied refugia • Reduces extent of exotic species not adapted to limiting conditions ...
Community assembly and the emergence of ecosystem pattern*
... are made more rapidly, so that the assemblage does not have time to come to equilibrium between introductions, there is no limit to the amount of diversity that can be achieved, even within a fixed range of fecundities. In particular, they found that if a large number of species are introduced into ...
... are made more rapidly, so that the assemblage does not have time to come to equilibrium between introductions, there is no limit to the amount of diversity that can be achieved, even within a fixed range of fecundities. In particular, they found that if a large number of species are introduced into ...
Sperm Precedence and Remating Propensity in Female D
... Estimate CMP and P2 • Harshman and Clark (1998) • Ravenswood sample (females and progeny) • Microsatellite genotypes of field females and laboratory progeny (19 families, average 13 progeny per family) • Direct enumeration of male gametes among the progeny suggested that the female concurrent remati ...
... Estimate CMP and P2 • Harshman and Clark (1998) • Ravenswood sample (females and progeny) • Microsatellite genotypes of field females and laboratory progeny (19 families, average 13 progeny per family) • Direct enumeration of male gametes among the progeny suggested that the female concurrent remati ...
Introduction to population growth models
... 5. Graph paper (PowerPoint slide 7), at least 1 per student 6. Pencils and erasers Activity Preparation and Procedure 1. (10 minutes): Using the PowerPoint presentation, introduce the charismatic spoonbill, including important aspects of its biology and ecology (slides 1-4). 2. (5 minutes): Using th ...
... 5. Graph paper (PowerPoint slide 7), at least 1 per student 6. Pencils and erasers Activity Preparation and Procedure 1. (10 minutes): Using the PowerPoint presentation, introduce the charismatic spoonbill, including important aspects of its biology and ecology (slides 1-4). 2. (5 minutes): Using th ...
Global Dispersal of Free-Living Microbial Eukaryote Species
... Others may be genetically identical to each other [e.g., the ciliate Tetrahymena americanis harbors eight sibling species, each with an identical sequence of 190 bases in a variable region of the 23S rRNA (27)], so in some ciliates at least, genetic isolation and genetic divergence are not correlate ...
... Others may be genetically identical to each other [e.g., the ciliate Tetrahymena americanis harbors eight sibling species, each with an identical sequence of 190 bases in a variable region of the 23S rRNA (27)], so in some ciliates at least, genetic isolation and genetic divergence are not correlate ...
Priorities for expansion of the National Reserve System (PDF
... The broader the scale at which an ecosystem is threatened the higher its priority for protection because threat at a national scale implies there are few if any areas where the ecological community is not threatened. A regional threat rating may mean the ecological community is only threatened in th ...
... The broader the scale at which an ecosystem is threatened the higher its priority for protection because threat at a national scale implies there are few if any areas where the ecological community is not threatened. A regional threat rating may mean the ecological community is only threatened in th ...
Biology 30 Detail Objectives
... 1. humans and other organisms have complex reproductive systems to ensure the survival of the species 2. reproductive success is regulated by chemical control systems 3. cell differentiation and organism development are regulated by a combination of genetics and environmental influence Unit 3: Cells ...
... 1. humans and other organisms have complex reproductive systems to ensure the survival of the species 2. reproductive success is regulated by chemical control systems 3. cell differentiation and organism development are regulated by a combination of genetics and environmental influence Unit 3: Cells ...
Populations - Cloudfront.net
... scale, it can have a drastic effect on the size of the prey population ...
... scale, it can have a drastic effect on the size of the prey population ...
Communities - SinclairsBio
... – Abiotic limiting factors includes sunlight, climate, temperature, water, nutrients, fire, soil chemistry, and space – Biotic limiting factors include other plant and animal species ...
... – Abiotic limiting factors includes sunlight, climate, temperature, water, nutrients, fire, soil chemistry, and space – Biotic limiting factors include other plant and animal species ...