Species interaction and Niche
... literally means “living together” • Any relationship between two species of animals is symbiosis and includes both positive and negative interactions ...
... literally means “living together” • Any relationship between two species of animals is symbiosis and includes both positive and negative interactions ...
Natural Selection
... Resource competition Preemptive competition Exploitation competition Interference competition ...
... Resource competition Preemptive competition Exploitation competition Interference competition ...
worksheet interaction between species
... 1. A relationship in which two organisms live together; one benefits while the other is Unaffected 2. A group of organisms, all of the same species that live in the same area 3. A relationship between two organisms in which one is harmed and the other benefits 5. An organism that derives nutrition f ...
... 1. A relationship in which two organisms live together; one benefits while the other is Unaffected 2. A group of organisms, all of the same species that live in the same area 3. A relationship between two organisms in which one is harmed and the other benefits 5. An organism that derives nutrition f ...
Interspecific Relationships
... • Role each species plays in its ecosystem • Habitat - area where it lives • Interactions with other organisms (interspecific relationships) ...
... • Role each species plays in its ecosystem • Habitat - area where it lives • Interactions with other organisms (interspecific relationships) ...
Convergent Evolution
... Open sandy deserts pose severe problems for their inhabitants: (1) windblown sands are always loose and provide little traction; (2) surface temperatures at midday rise to lethal levels; and (3) open sandy areas offer little food or shade or shelter for evading predators. Even so, natural selection ...
... Open sandy deserts pose severe problems for their inhabitants: (1) windblown sands are always loose and provide little traction; (2) surface temperatures at midday rise to lethal levels; and (3) open sandy areas offer little food or shade or shelter for evading predators. Even so, natural selection ...
Lecture 6 and 7 California Floristic Province
... • May be physical or physiological • Spines • Tolerance to salty soils • An adaptation is a trait with survival value ...
... • May be physical or physiological • Spines • Tolerance to salty soils • An adaptation is a trait with survival value ...
Booklet
... Indirect effect on birds feeding on insects Deer browse the vegetation, which becomes scarce. → Insects who feed on the vegetation do not have enough food anymore and become scarce too. → Insects who feed or parasitize these insects do not have enough food to survive themselves and become scarce t ...
... Indirect effect on birds feeding on insects Deer browse the vegetation, which becomes scarce. → Insects who feed on the vegetation do not have enough food anymore and become scarce too. → Insects who feed or parasitize these insects do not have enough food to survive themselves and become scarce t ...
Is Facilitation a True Species Interaction?
... Holbrook 2003) or symbionts (Baker 2003). All of the above interactions use positive or negative symbols for both species involved (the grey area of Fig. 1). Ecological theory has made clear how these interactions have considerable consequences over evolutionary time, either shaping niche space (Cha ...
... Holbrook 2003) or symbionts (Baker 2003). All of the above interactions use positive or negative symbols for both species involved (the grey area of Fig. 1). Ecological theory has made clear how these interactions have considerable consequences over evolutionary time, either shaping niche space (Cha ...
FACTORS FOR INSECTS ABUNDANCE Measures of dominance 1
... Large number of individuals in a single species: e.g., Locust swarm comprising of 109 number of individuals, occupying large area. ...
... Large number of individuals in a single species: e.g., Locust swarm comprising of 109 number of individuals, occupying large area. ...
Powerpoint 2
... 4. B 5. C 6. B Overall Summary: Punnett squares enable the prediction of traits offspring should have based on the traits the parents have. Homozygous means ‘the same’ and Heterozygous means ‘different.’ Dominant traits are capitalized and recessive traits are in lower case letters. Discussion? ...
... 4. B 5. C 6. B Overall Summary: Punnett squares enable the prediction of traits offspring should have based on the traits the parents have. Homozygous means ‘the same’ and Heterozygous means ‘different.’ Dominant traits are capitalized and recessive traits are in lower case letters. Discussion? ...
An Origin of Species
... The population on the north side of the largest island grows gradually. Dispersal from the large island to other islands in the chain is rare, though, due to the low population density on the large island, the small size of other islands in the chain, and the distance between the islands. There is v ...
... The population on the north side of the largest island grows gradually. Dispersal from the large island to other islands in the chain is rare, though, due to the low population density on the large island, the small size of other islands in the chain, and the distance between the islands. There is v ...
Social but not solitary bees reject dangerous flowers where a
... Bees are isolated All females fertile Builds own nest N. strigata ...
... Bees are isolated All females fertile Builds own nest N. strigata ...
Chapter 22-25 Packet O` Fun
... 2. In a population of mice, some individuals have brown fur and some have black fur. At present, both phenotypes are equally fit. What could happen to change the relative fitness of the two phenotypes in the population? For example, what could cause individuals with brown fur to show reduced fitness ...
... 2. In a population of mice, some individuals have brown fur and some have black fur. At present, both phenotypes are equally fit. What could happen to change the relative fitness of the two phenotypes in the population? For example, what could cause individuals with brown fur to show reduced fitness ...
Lonicera maackii - USDA Forest Service
... USDA hardiness zones: 3-8; found in a variety of different habitats. Leaves appear earlier than many native trees and shrubs and fall later than several native species – leading to a prolonged growing period. Flowers start off white but age to yellow. Plants usually must be 5-8 years old before they ...
... USDA hardiness zones: 3-8; found in a variety of different habitats. Leaves appear earlier than many native trees and shrubs and fall later than several native species – leading to a prolonged growing period. Flowers start off white but age to yellow. Plants usually must be 5-8 years old before they ...
Our Genes, Our Selves
... Which of the following is a possible explanation for why there were no white flowers in the second generation of pea plants? A) ...
... Which of the following is a possible explanation for why there were no white flowers in the second generation of pea plants? A) ...
Introduction Family Capillariidae (Neveu
... protuberance (Fig. 5). The eggs resemble the shape of a lemon, the shell is thin, forming collars at the poles of the egg. The eggs also have bipolar plugs. Characteristic feature in E. contortus females is an imbrication of the eggs, which have not yet descended to the uterus. Due to the quality of ...
... protuberance (Fig. 5). The eggs resemble the shape of a lemon, the shell is thin, forming collars at the poles of the egg. The eggs also have bipolar plugs. Characteristic feature in E. contortus females is an imbrication of the eggs, which have not yet descended to the uterus. Due to the quality of ...
chapter review—biodiversity and evolution
... d. people kill sharks in a ratio of 5:1 for humans deaths e. people do not kill sharks because we cannot catch them 2. Which of the following are reasons why sharks should be considered important to humans? a. They eat sea urchins, thus protecting kelp forests. b. They are an important source of foo ...
... d. people kill sharks in a ratio of 5:1 for humans deaths e. people do not kill sharks because we cannot catch them 2. Which of the following are reasons why sharks should be considered important to humans? a. They eat sea urchins, thus protecting kelp forests. b. They are an important source of foo ...
Chapter 21
... holding a community together because other species depend on it. The removal of a keystone species has a dramatic impact on the community. • A community is a group of interacting populations of different species living together in the same area. ...
... holding a community together because other species depend on it. The removal of a keystone species has a dramatic impact on the community. • A community is a group of interacting populations of different species living together in the same area. ...
Slide 1 - Images
... • Insects have developed several passive and aggressive defenses to help them survive. • One form of passive defense is camouflage which helps them hide. They may look like sticks or leaves. ...
... • Insects have developed several passive and aggressive defenses to help them survive. • One form of passive defense is camouflage which helps them hide. They may look like sticks or leaves. ...
Chapter 30 Evolution
... • Because there are many organisms with similar nutritional requirements, there must be competition between them for the resources needed to survive ...
... • Because there are many organisms with similar nutritional requirements, there must be competition between them for the resources needed to survive ...
2012 chapter5
... Each Other’s Evolution Intense natural selection pressures between predator and prey populations Coevolution • Changes in 1 species can lead to changes in another species ...
... Each Other’s Evolution Intense natural selection pressures between predator and prey populations Coevolution • Changes in 1 species can lead to changes in another species ...
Evolution Course Notes Theory of Evolution
... It is no accident that the various races (or "subspecies") of animals almost never occupy the same territory. Their distribution is allopatric ("other country"). Leopard Frogs - are found over the entire eastern half of North America, from southern Canada to northern Mexico. All leopard frogs were t ...
... It is no accident that the various races (or "subspecies") of animals almost never occupy the same territory. Their distribution is allopatric ("other country"). Leopard Frogs - are found over the entire eastern half of North America, from southern Canada to northern Mexico. All leopard frogs were t ...
Biological Control Agents - Orchids
... such as viruses and bacteria, can be directly transmitted between hosts of the same species. Parasitoids are parasitic organisms that spend part of their life cycle attached to or inside a single host. Unlike parasites, parasitoids ultimately kill, and in most cases consume their host. The main diff ...
... such as viruses and bacteria, can be directly transmitted between hosts of the same species. Parasitoids are parasitic organisms that spend part of their life cycle attached to or inside a single host. Unlike parasites, parasitoids ultimately kill, and in most cases consume their host. The main diff ...
Sculpt a Parasite
... Listen carefully to the teacher’s instructions when carrying out activities. ...
... Listen carefully to the teacher’s instructions when carrying out activities. ...
2009 APS Fieldtrip to Mexico
... a series of ecological zones as it rises from 100 feet to the 7800 feet elevation of Creel. These range from semi-desert scrub to lush tropical areas to a gradual gradation of forest ecotypes as you head northeast up the face of the scarp. To accomplish this engineering feat the track passes over so ...
... a series of ecological zones as it rises from 100 feet to the 7800 feet elevation of Creel. These range from semi-desert scrub to lush tropical areas to a gradual gradation of forest ecotypes as you head northeast up the face of the scarp. To accomplish this engineering feat the track passes over so ...
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.