A New Mechanism for Recurrent Adaptive Radiations
... assembly (Jansen and Mulder 1999; Bonsall et al. 2004; Loeuille and Loreau 2005). A recent review of findings in the related field of research on ecological character displacement (Brown and Wilson 1956) has been provided by Dayan and Simberloff (2005). The number of studies cited above indicates th ...
... assembly (Jansen and Mulder 1999; Bonsall et al. 2004; Loeuille and Loreau 2005). A recent review of findings in the related field of research on ecological character displacement (Brown and Wilson 1956) has been provided by Dayan and Simberloff (2005). The number of studies cited above indicates th ...
Evolutionary distributions and competition by way of reaction
... one cannot refute these claims with the scientific method. Such claims are therefore outside the purview of science. In taxonomy, a collection of phenotypes may be classified as belonging to a single species, or occasionally to a subspecies. There exist a number of definitions of species (Futuyma, 2 ...
... one cannot refute these claims with the scientific method. Such claims are therefore outside the purview of science. In taxonomy, a collection of phenotypes may be classified as belonging to a single species, or occasionally to a subspecies. There exist a number of definitions of species (Futuyma, 2 ...
CHAPTER 10 Changes in biodiversity over time
... proposed that species could evolve or be transformed to produce FIGURE 10.2 A representation of one new species, but none of these naturalists identified a testable mechmedieval view of the origin of birds and anism to explain how evolution could occur. This changed when ...
... proposed that species could evolve or be transformed to produce FIGURE 10.2 A representation of one new species, but none of these naturalists identified a testable mechmedieval view of the origin of birds and anism to explain how evolution could occur. This changed when ...
Chapter 7 The Evolution of Living Things-1n7p04n
... Your son's or daughter's science class will soon begin exploring the chapter entitled “The World of Physical Science.” In this chapter, students will learn about how the scientific method applies to the world of physical science and the role of physical science in the world. By the end of the chapte ...
... Your son's or daughter's science class will soon begin exploring the chapter entitled “The World of Physical Science.” In this chapter, students will learn about how the scientific method applies to the world of physical science and the role of physical science in the world. By the end of the chapte ...
Hui y McGeoch 2006
... Evidences reinforce the point that discontinuities in the geometry of vegetated landscape impose discontinuities on the morphology of animals (Morton, 1990). However, species richness and body size distribution in different tropic levels have been little investigated and compared. Several recent stu ...
... Evidences reinforce the point that discontinuities in the geometry of vegetated landscape impose discontinuities on the morphology of animals (Morton, 1990). However, species richness and body size distribution in different tropic levels have been little investigated and compared. Several recent stu ...
Darwin Evolution - Biology Junction
... –First to propose that organisms undergo change as a result of natural phenomenon –Lamarck ideas discredited when Mendel’s theories rediscovered around 1900 Copyright © 2005 Brooks/Cole — Thomson Learning ...
... –First to propose that organisms undergo change as a result of natural phenomenon –Lamarck ideas discredited when Mendel’s theories rediscovered around 1900 Copyright © 2005 Brooks/Cole — Thomson Learning ...
Vertebrate Land Invasions–Past, Present, and Future: An
... functional demands of two very different habitats, and studies rooted in the fossil record, which yield insight into why modern amphibious taxa perform as they do. With these complementary model systems, we endeavor to understand the complex transition to life on land and shed light on the evolution ...
... functional demands of two very different habitats, and studies rooted in the fossil record, which yield insight into why modern amphibious taxa perform as they do. With these complementary model systems, we endeavor to understand the complex transition to life on land and shed light on the evolution ...
Atomism, epigenesis, preformation and preexistence: a clarification
... (e.g. Mayr, 1982); however, at the same time the theoretical content of these notions is by no means clear. The reasons for this are twofold. I n the field of the history of science a controversy has been triggered by Jacques Roger (1971; first edition 1963), who distinguished between preformation a ...
... (e.g. Mayr, 1982); however, at the same time the theoretical content of these notions is by no means clear. The reasons for this are twofold. I n the field of the history of science a controversy has been triggered by Jacques Roger (1971; first edition 1963), who distinguished between preformation a ...
The Disturbing History of Intermediate Disturbance David M
... a later book Grime (1979: 163) provided a more generalised version of this graph calling it the 'hump-backed model'. If this characteristically shaped graph is taken as central to the intermediate disturbance hypothesis then it should be Grime rather than Connell who is cited as its originator. It w ...
... a later book Grime (1979: 163) provided a more generalised version of this graph calling it the 'hump-backed model'. If this characteristically shaped graph is taken as central to the intermediate disturbance hypothesis then it should be Grime rather than Connell who is cited as its originator. It w ...
evolutio - The Skeptic Tank
... ----------------------------------------------"It is time for students of the evolutionary process, especially those who have been misquoted and used by the creationists, to state clearly that evolution is a FACT, not theory, and that what is at issue within bology are questions of details of the pr ...
... ----------------------------------------------"It is time for students of the evolutionary process, especially those who have been misquoted and used by the creationists, to state clearly that evolution is a FACT, not theory, and that what is at issue within bology are questions of details of the pr ...
DIVERSITY HYPOTHESIS
... "Bottom-Up" - more Energy, more sp. - qualitative effects: energy increasing types of diversity The tropics not only have MORE productivity, they have more KINDS of productivity – more types of plants, allowing greater specialization by more types of animals. We tend to see this diversity evolving ...
... "Bottom-Up" - more Energy, more sp. - qualitative effects: energy increasing types of diversity The tropics not only have MORE productivity, they have more KINDS of productivity – more types of plants, allowing greater specialization by more types of animals. We tend to see this diversity evolving ...
Cradle or museum?
... "Bottom-Up" - more Energy, more sp. - qualitative effects: energy increasing types of diversity The tropics not only have MORE productivity, they have more KINDS of productivity – more types of plants, allowing greater specialization by more types of animals. We tend to see this diversity evolving ...
... "Bottom-Up" - more Energy, more sp. - qualitative effects: energy increasing types of diversity The tropics not only have MORE productivity, they have more KINDS of productivity – more types of plants, allowing greater specialization by more types of animals. We tend to see this diversity evolving ...
Theodosius Dobzhansky: A Man For All Seasons
... Mendel’s discoveries, however, remained unknown to Darwin and, indeed, did not become generally known until 1900, when they were simultaneously rediscovered by several scientists. In the meantime, Darwinism in the latter part of the 19th century faced an alternative evolutionary theory known as neo- ...
... Mendel’s discoveries, however, remained unknown to Darwin and, indeed, did not become generally known until 1900, when they were simultaneously rediscovered by several scientists. In the meantime, Darwinism in the latter part of the 19th century faced an alternative evolutionary theory known as neo- ...
Theory and speciation
... essential for morphological, ecological or genetic divergence, or that we regard other aspects of divergence between sympatric or allopatric groups as being less interesting than the evolution of reproductive isolation. As with most areas of population biology, theories of speciation are generally v ...
... essential for morphological, ecological or genetic divergence, or that we regard other aspects of divergence between sympatric or allopatric groups as being less interesting than the evolution of reproductive isolation. As with most areas of population biology, theories of speciation are generally v ...
Theory and speciation
... essential for morphological, ecological or genetic divergence, or that we regard other aspects of divergence between sympatric or allopatric groups as being less interesting than the evolution of reproductive isolation. As with most areas of population biology, theories of speciation are generally v ...
... essential for morphological, ecological or genetic divergence, or that we regard other aspects of divergence between sympatric or allopatric groups as being less interesting than the evolution of reproductive isolation. As with most areas of population biology, theories of speciation are generally v ...
J. Seckbach (ed.), Genesis - In The Beginning: Precursors of Life
... several meanings, ranging from competition to cooperation. In this way, the term concurrency (struggle for life) would include competition but also cooperation. Kutschera (2009b) suggests an integrative model of macroevolution, where the Earth’s systemic dynamics were responsible for the creation of ...
... several meanings, ranging from competition to cooperation. In this way, the term concurrency (struggle for life) would include competition but also cooperation. Kutschera (2009b) suggests an integrative model of macroevolution, where the Earth’s systemic dynamics were responsible for the creation of ...
Fulltext PDF
... The first detailed theory of continental drift was put forward by the German meteorologist and geophysicist Alfred Wegener in 1912. Wegener proposed that about 280 my a all the continents were united in a vast supercontinent, which he called Pangaea. About 180 mya, Pangaea broke into two supercontin ...
... The first detailed theory of continental drift was put forward by the German meteorologist and geophysicist Alfred Wegener in 1912. Wegener proposed that about 280 my a all the continents were united in a vast supercontinent, which he called Pangaea. About 180 mya, Pangaea broke into two supercontin ...
Evolutionary Gems from Nature
... vanished from Earth. Some of them even document evolution in action, recording creatures moving from one environment to another. Whales, for example, are beautifully adapted to life in water, and have been for millions of years. But, like us, they are mammals. They breathe air, and give birth to and ...
... vanished from Earth. Some of them even document evolution in action, recording creatures moving from one environment to another. Whales, for example, are beautifully adapted to life in water, and have been for millions of years. But, like us, they are mammals. They breathe air, and give birth to and ...
Darwin`s Method: Induction, Deduction, or
... voyage at sea, he was aware of evolutionary ideas and their implications, and it is almost certain that he would have looked at evidence through a certain lens, maybe even more than one. Gruber states that ―since Darwin had been for so long acquainted with the existence of theories of evolution, sin ...
... voyage at sea, he was aware of evolutionary ideas and their implications, and it is almost certain that he would have looked at evidence through a certain lens, maybe even more than one. Gruber states that ―since Darwin had been for so long acquainted with the existence of theories of evolution, sin ...
New Scientist Evolution Special
... If you think you understand it, you don't know nearly enough about it It will soon be 200 years since the birth of Charles Darwin and 150 years since the publication of On the Origin of Species, arguably the most important book ever written. In it, Darwin outlined an idea that many still find shocki ...
... If you think you understand it, you don't know nearly enough about it It will soon be 200 years since the birth of Charles Darwin and 150 years since the publication of On the Origin of Species, arguably the most important book ever written. In it, Darwin outlined an idea that many still find shocki ...
Evolutionary Game Theory First published Mon Jan 14, 2002
... follow the second strategy.) However, this can fail to be true if more than two pure strategies exist. The connection between ESSs and stable states under an evolutionary dynamical model is weakened further if we do not model the dynamics by the replicator dynamics. For example, suppose we use a loc ...
... follow the second strategy.) However, this can fail to be true if more than two pure strategies exist. The connection between ESSs and stable states under an evolutionary dynamical model is weakened further if we do not model the dynamics by the replicator dynamics. For example, suppose we use a loc ...
Evolutionary History Uniting History and Biology to Understand Life
... insect species have become pests as a by-product of spraying that entomologists have a term for them: secondary pests.) Spraying did not create new species, but it helped populations of several species become plentiful enough to cause economic problems. This explained why the number of pest species ...
... insect species have become pests as a by-product of spraying that entomologists have a term for them: secondary pests.) Spraying did not create new species, but it helped populations of several species become plentiful enough to cause economic problems. This explained why the number of pest species ...
Life Changes - Miami Museum of Science
... Along the same lines, feathers evolved in small steps. Based on fossil evidence, we think that the first feathers were simple affairs—little more than fuzz. But through many generations of random mutation and natural selection, they evolved into more elaborate structures. Scientists are still invest ...
... Along the same lines, feathers evolved in small steps. Based on fossil evidence, we think that the first feathers were simple affairs—little more than fuzz. But through many generations of random mutation and natural selection, they evolved into more elaborate structures. Scientists are still invest ...
Punctuated equilibrium
Punctuated equilibrium (also called punctuated equilibria) is a theory in evolutionary biology which proposes that once species appear in the fossil record they will become stable, showing little net evolutionary change for most of their geological history. This state is called stasis. When significant evolutionary change occurs, the theory proposes that it is generally restricted to rare and geologically rapid events of branching speciation called cladogenesis. Cladogenesis is the process by which a species splits into two distinct species, rather than one species gradually transforming into another. Punctuated equilibrium is commonly contrasted against phyletic gradualism, the belief that evolution generally occurs uniformly and by the steady and gradual transformation of whole lineages (called anagenesis). In this view, evolution is seen as generally smooth and continuous.In 1972, paleontologists Niles Eldredge and Stephen Jay Gould published a landmark paper developing their theory and called it punctuated equilibria. Their paper built upon Ernst Mayr's model of geographic speciation, I. Michael Lerner's theories of developmental and genetic homeostasis, as well as their own empirical research. Eldredge and Gould proposed that the degree of gradualism commonly attributed to Charles Darwin is virtually nonexistent in the fossil record, and that stasis dominates the history of most fossil species.