Lect14CommunityInteractions
... • Gause’s principle of competitive exclusion can be restated – No two species can occupy the same niche indefinitely • When niches overlap, two outcomes are possible – Competitive exclusion or resource partitioning ...
... • Gause’s principle of competitive exclusion can be restated – No two species can occupy the same niche indefinitely • When niches overlap, two outcomes are possible – Competitive exclusion or resource partitioning ...
Evolution Patterns
... 4. Coevolution 5. Punctuated equilibrium 6. Changes in Developmental Genes ...
... 4. Coevolution 5. Punctuated equilibrium 6. Changes in Developmental Genes ...
BIOLOGY- Mechanisms of Evolution Unit Outline I. MICRO
... Speciation (The Mechanism of Macroevolution) a. What is the biological species concept? Describe how a single population can evolve into two populations that no longer interbreed. ...
... Speciation (The Mechanism of Macroevolution) a. What is the biological species concept? Describe how a single population can evolve into two populations that no longer interbreed. ...
Animal Symbioses and Interactions
... • An insect that lays eggs on a host • Larvae hatch and feed off of the host • Host may eventually die, but not until larvae has obtained all its nutrients ...
... • An insect that lays eggs on a host • Larvae hatch and feed off of the host • Host may eventually die, but not until larvae has obtained all its nutrients ...
No Slide Title
... • "The introduction of a few rabbits could do little harm and might provide a touch of home, in addition to a spot of hunting.” ...
... • "The introduction of a few rabbits could do little harm and might provide a touch of home, in addition to a spot of hunting.” ...
Survival Relationships
... Female stings and paralyzes prey and then deposits her eggs into the prey. The larvae feed off of the living organism until they are large enough and able to break through the skin eventually killing the host organism. ...
... Female stings and paralyzes prey and then deposits her eggs into the prey. The larvae feed off of the living organism until they are large enough and able to break through the skin eventually killing the host organism. ...
invasive species
... – Unrelated protected species resemble one another. predators learn more quickly Several distasteful butterflies look alike ...
... – Unrelated protected species resemble one another. predators learn more quickly Several distasteful butterflies look alike ...
Community Ecology
... • Niche Differences or anatomical differences evolve that lessen competition • Character displacement • A bunch of finches live in the same area but have dif. beaks and eat slightly dif foods. • Resource Partitioning – I’ll use this part of the resource, you use that part. ...
... • Niche Differences or anatomical differences evolve that lessen competition • Character displacement • A bunch of finches live in the same area but have dif. beaks and eat slightly dif foods. • Resource Partitioning – I’ll use this part of the resource, you use that part. ...
Monday September 10th Bellwork: Complete the Energy Pyramid
... Symbiosis close relationship between two or more organisms of different species that live in direct contact with one another. ...
... Symbiosis close relationship between two or more organisms of different species that live in direct contact with one another. ...
Concepts in the study of Evolution
... bat and wing of an insect are analogous structures because while the underlying structures are fundamentally different, the function in both cases is flight. This overlaps the concept of convergent evolution (see below). Coevolution - When species evolve in response to one another, they co-evolve. T ...
... bat and wing of an insect are analogous structures because while the underlying structures are fundamentally different, the function in both cases is flight. This overlaps the concept of convergent evolution (see below). Coevolution - When species evolve in response to one another, they co-evolve. T ...
BIOLOGY Ch 15 Populations
... Back and forth evolutionary adjustments between interacting members of a community are called __________________. E.g. adaptations in flowering plants that promoted efficient dispersal of their pollen by insects and other animals. In turn, adaptations appeared in pollinators that enabled them to obt ...
... Back and forth evolutionary adjustments between interacting members of a community are called __________________. E.g. adaptations in flowering plants that promoted efficient dispersal of their pollen by insects and other animals. In turn, adaptations appeared in pollinators that enabled them to obt ...
Coevolution: A synergy in biology and ecology
... In a broad sense, coevolution refers to the mutual dependence between species and between species and the environment in the evolution (Luo and Zhang, 2014). Compared to Darwin’s theory, coevolution stresses the between-species interactions and the adaptation of species to their biological environme ...
... In a broad sense, coevolution refers to the mutual dependence between species and between species and the environment in the evolution (Luo and Zhang, 2014). Compared to Darwin’s theory, coevolution stresses the between-species interactions and the adaptation of species to their biological environme ...
Notes 8.2 How Species Interact
... One way competition can be reduced between species is by dividing up the niche in time or space Niche restriction-- when each species uses less of the niche than they are capable of using Example: two different barnacles use different depths of rock to cling to ...
... One way competition can be reduced between species is by dividing up the niche in time or space Niche restriction-- when each species uses less of the niche than they are capable of using Example: two different barnacles use different depths of rock to cling to ...
Magali Proffit
... fundamental levels. She has tried to reinforce this parallel approach throughout her Ph.D. and her post-doctoral positions. She showed that plant odour is the main signal promoting both the attraction and the specificity in different plant-pollinator as well as plant-herbivore interactions. In more ...
... fundamental levels. She has tried to reinforce this parallel approach throughout her Ph.D. and her post-doctoral positions. She showed that plant odour is the main signal promoting both the attraction and the specificity in different plant-pollinator as well as plant-herbivore interactions. In more ...
Symbiotic Relationships
... Symbiosis • Relationships between organisms in a community. • Include both beneficial & harmful relationships ...
... Symbiosis • Relationships between organisms in a community. • Include both beneficial & harmful relationships ...
The buzz on developing pollinator habitat on riparian forest buffers
... RFB. This mix of plant species will also provide habitat for other beneficial insects, such as ladybugs, that consume insect pests naturally, reducing the need for pesticides. A good pollinator RFB will also provide food and cover for many wildlife species, such as pheasant or quail. The planner wil ...
... RFB. This mix of plant species will also provide habitat for other beneficial insects, such as ladybugs, that consume insect pests naturally, reducing the need for pesticides. A good pollinator RFB will also provide food and cover for many wildlife species, such as pheasant or quail. The planner wil ...
Vocabulary Review
... in function and appearance, but not in evolutionary origin, to another anatomical structure in another species ...
... in function and appearance, but not in evolutionary origin, to another anatomical structure in another species ...
Types of Species Interactions
... What adaptations do each of these organisms have in their role as predator or prey? ...
... What adaptations do each of these organisms have in their role as predator or prey? ...
File
... resources. Interspecific is when two separate species compete. Intraspecific is when two organisms of the same species compete. 3. A limiting resource is in the shortest supply relative to demand. It is a resource that is most competed for. Resource partitioning is differences in species for resourc ...
... resources. Interspecific is when two separate species compete. Intraspecific is when two organisms of the same species compete. 3. A limiting resource is in the shortest supply relative to demand. It is a resource that is most competed for. Resource partitioning is differences in species for resourc ...
Coevolution
In biology, coevolution is ""the change of a biological object triggered by the change of a related object"". In other words, when changes in at least two species' genetic compositions reciprocally affect each other’s evolution, coevolution has occurred.There is evidence for coevolution at the level of populations and species. Charles Darwin briefly described the concept of coevolution in On the Origin of Species (1859) and developed it in detail in Fertilisation of Orchids (1862). It is likely that viruses and their hosts coevolve in various scenarios.However, there is little evidence of coevolution driving large-scale changes in Earth's history, since abiotic factors such as mass extinction and expansion into ecospaces seem to guide the shifts in the abundance of major groups. One proposed specific example was the evolution of high-crowned teeth in grazers when grasslands spread through North America - long held up as an example of coevolution. We now know that these events happened independently.Coevolution can occur at many biological levels: it can be as microscopic as correlated mutations between amino acids in a protein or as macroscopic as covarying traits between different species in an environment. Each party in a coevolutionary relationship exerts selective pressures on the other, thereby affecting each other's evolution. Coevolution of different species includes the evolution of a host species and its parasites (host–parasite coevolution), and examples of mutualism evolving through time. Evolution in response to abiotic factors, such as climate change, is not biological coevolution (since climate is not alive and does not undergo biological evolution).The general conclusion is that coevolution may be responsible for much of the genetic diversity seen in normal populations including: blood-plasma polymorphism, protein polymorphism, histocompatibility systems, etc.The parasite/host relationship probably drove the prevalence of sexual reproduction over the more efficient asexual reproduction. It seems that when a parasite infects a host, sexual reproduction affords a better chance of developing resistance (through variation in the next generation), giving sexual reproduction viability for fitness not seen in the asexual reproduction, which produces another generation of the organism susceptible to infection by the same parasite.Coevolution is primarily a biological concept, but researchers have applied it by analogy to fields such as computer science, sociology / international political economy and astronomy.