Unit 2 Homework Sheet
... 39. What is the difference between exponential and logistic growth? Explain the role of r and K in these types of growth. 40. Why does logistical growth occur in the environment? 41. What is the rule of 70? Be able to use it to estimate doubling time or percent growth rate. 42. What is the differenc ...
... 39. What is the difference between exponential and logistic growth? Explain the role of r and K in these types of growth. 40. Why does logistical growth occur in the environment? 41. What is the rule of 70? Be able to use it to estimate doubling time or percent growth rate. 42. What is the differenc ...
Estimating competition coefоcients: strong competition among three
... independently so that both the total number of larvae per fruit and the relative frequency of each competitor varied. I used all factorial two-species treatments of 0, 4, and 8 larvae of each species per fruit. Because larvae of Chlorops sp. and Taeneaptera sp. were more abundant, I established addi ...
... independently so that both the total number of larvae per fruit and the relative frequency of each competitor varied. I used all factorial two-species treatments of 0, 4, and 8 larvae of each species per fruit. Because larvae of Chlorops sp. and Taeneaptera sp. were more abundant, I established addi ...
Ecology Powerpoint - Warren County Schools
... decrease from starvation or low birth numbers. When food if plentiful, numbers increase because of low death rates and high birth rates. ...
... decrease from starvation or low birth numbers. When food if plentiful, numbers increase because of low death rates and high birth rates. ...
Theory and its correction
... enormous cost of migration from deep ocean to upstream fresh water. Thus the curve rises very sharply at low reproductive effort. However, the additional cost to spawn more eggs is basically the metabolic cost of the egg tissue, that is much more modest and basically flat (i.e. each egg costs about ...
... enormous cost of migration from deep ocean to upstream fresh water. Thus the curve rises very sharply at low reproductive effort. However, the additional cost to spawn more eggs is basically the metabolic cost of the egg tissue, that is much more modest and basically flat (i.e. each egg costs about ...
the geography of evolution
... distribution patterns of plants and animals. Ecozones represent large areas of the earth's surface where plants and animals developed in relative isolation over long periods of time, and are separated from one another by geologic features, such as oceans, broad deserts, or high mountain ranges, that ...
... distribution patterns of plants and animals. Ecozones represent large areas of the earth's surface where plants and animals developed in relative isolation over long periods of time, and are separated from one another by geologic features, such as oceans, broad deserts, or high mountain ranges, that ...
The Importance of Motivation, Weapons, and Foul Odors in Driving
... Abstract. Encounter competition is interference competition in which animals directly contend for resources. Ecological theory predicts the trait that determines the resource holding potential (RHP), and hence the winner of encounter competition, is most often body size or mass. The difficulties of ...
... Abstract. Encounter competition is interference competition in which animals directly contend for resources. Ecological theory predicts the trait that determines the resource holding potential (RHP), and hence the winner of encounter competition, is most often body size or mass. The difficulties of ...
Inclusion of facilitation into ecological theory
... of competition vary across environmental gradients of stress or resource availability. Such environmental stress models can be modified to incorporate positive interactions (Box 2), sometimes with surprising results. However, species interactions often comprise both negative (competitive) and positi ...
... of competition vary across environmental gradients of stress or resource availability. Such environmental stress models can be modified to incorporate positive interactions (Box 2), sometimes with surprising results. However, species interactions often comprise both negative (competitive) and positi ...
From Energy Gradient and Natural Selection to Biodiversity and
... Department of Mathematics, University of Nebraska-Lincoln, Lincoln, NE 68588, USA Abstract: The purpose of this paper is to incorporate well-established ecological principles into a foodweb model consisting of four trophic levels --- abiotic resources, plants, herbivores, and carnivores. The underli ...
... Department of Mathematics, University of Nebraska-Lincoln, Lincoln, NE 68588, USA Abstract: The purpose of this paper is to incorporate well-established ecological principles into a foodweb model consisting of four trophic levels --- abiotic resources, plants, herbivores, and carnivores. The underli ...
1.4.1 - 1.4.4 Ecology, Ecosystem, Biosphere, Habitat
... Lichens Two lichens on a rock, in two different ecological niches. Can you explain why they are different niches? ...
... Lichens Two lichens on a rock, in two different ecological niches. Can you explain why they are different niches? ...
A2 level Biology Revision Notes - A
... Abiotic features that influence size population include: ____________: each species has different optimum at which best survive. Further away from optimum small population be supported. In plants enzymes work more slowly & metabolic rate reduced. Populations grow more slowly. Above optimum, enzymes ...
... Abiotic features that influence size population include: ____________: each species has different optimum at which best survive. Further away from optimum small population be supported. In plants enzymes work more slowly & metabolic rate reduced. Populations grow more slowly. Above optimum, enzymes ...
Competition, predation and species responses to environmental
... extinction or dominance occurs at extreme temperatures (Park 1954, Hairston and Kellermann 1965, Wilson et al. 1984, Phillips et al. 1995, Davis et al. 1998a,b, Taniguchi and Nakano 2000). A probable explanation is that at 268C the higher feeding rate of Colpidium outweighed its lower density (compa ...
... extinction or dominance occurs at extreme temperatures (Park 1954, Hairston and Kellermann 1965, Wilson et al. 1984, Phillips et al. 1995, Davis et al. 1998a,b, Taniguchi and Nakano 2000). A probable explanation is that at 268C the higher feeding rate of Colpidium outweighed its lower density (compa ...
Ecological community integration increases with added trophic
... reality, perhaps this phenomenon is common to more complicated, realistic models and, more importantly, actually operates in nature. The ability of Lotka-Volterra communities to compete en masse presents a scenario in which, given some initial degree of spatial segregation, a population of communiti ...
... reality, perhaps this phenomenon is common to more complicated, realistic models and, more importantly, actually operates in nature. The ability of Lotka-Volterra communities to compete en masse presents a scenario in which, given some initial degree of spatial segregation, a population of communiti ...
Inclusion of facilitation into ecological theory
... Fig. 1. Four fundamental models of ecology, with and without facilitation. (a) When facilitation is considered, the realized niche (green circle) can be larger than the spatial range predicted by the fundamental niche (dashed line) (ai). Incorporating facilitation into the niche concept (aii) recogn ...
... Fig. 1. Four fundamental models of ecology, with and without facilitation. (a) When facilitation is considered, the realized niche (green circle) can be larger than the spatial range predicted by the fundamental niche (dashed line) (ai). Incorporating facilitation into the niche concept (aii) recogn ...
Biology Topic 4
... than organism B, organism A will survive and reproduce more than organism B. It is very important to understand that longer life is not a "goal" of natural selection. An organism that is better suited to an environment will be able to reproduce and pass on their superior genes. ...
... than organism B, organism A will survive and reproduce more than organism B. It is very important to understand that longer life is not a "goal" of natural selection. An organism that is better suited to an environment will be able to reproduce and pass on their superior genes. ...
Appendix 1
... seedbank until the next census. These estimations did not include germination of seeds ...
... seedbank until the next census. These estimations did not include germination of seeds ...
Concordia University BASIC POPULATION ECOLOGY (BIOL 351/4
... Office Hours: XXXXXX or by appointment Email: XXXXXXXXXXX (Include BIOL 351 in the subject line of your email). ...
... Office Hours: XXXXXX or by appointment Email: XXXXXXXXXXX (Include BIOL 351 in the subject line of your email). ...
Carrying Capacity of Ecosystems
... As population increases, individuals will compete for food, water, space, sunlight, etc. The more crowded an area is, the sooner resources will be used up. Those individuals who are better competitors survive and reproduce, those who aren’t, die out (survival of the fittest). ...
... As population increases, individuals will compete for food, water, space, sunlight, etc. The more crowded an area is, the sooner resources will be used up. Those individuals who are better competitors survive and reproduce, those who aren’t, die out (survival of the fittest). ...
Doncaster et al 2000 paper - Department of Zoology, University of
... © 2000 Macmillan Magazines Ltd ...
... © 2000 Macmillan Magazines Ltd ...