population ecology 2010
... • All populations have this ability, although not all populations realized this type of growth • Darwin pondered the question of exponential growth. He knew that all species had the potential to grow exponentially • He used elephants as an example because elephants are one of the slowest breeders on ...
... • All populations have this ability, although not all populations realized this type of growth • Darwin pondered the question of exponential growth. He knew that all species had the potential to grow exponentially • He used elephants as an example because elephants are one of the slowest breeders on ...
Metacommunity Dynamics: Decline of Functional
... Background: The metacommunity framework is crucial to the study of functional relations along environmental gradients. Changes in resource grain associated with increasing habitat fragmentation should generate uncoupled responses of interacting species with contrasted dispersal abilities. Methodolog ...
... Background: The metacommunity framework is crucial to the study of functional relations along environmental gradients. Changes in resource grain associated with increasing habitat fragmentation should generate uncoupled responses of interacting species with contrasted dispersal abilities. Methodolog ...
Some Questions to Ponder
... In a population of mice, 50% of the females survive to the first breeding season when they are one year old. In each year they give rise to an average of 6 offspring with a 1:1 sex ratio. Between each breeding event and the next, 50% die. This continues to the end of their third breeding season at w ...
... In a population of mice, 50% of the females survive to the first breeding season when they are one year old. In each year they give rise to an average of 6 offspring with a 1:1 sex ratio. Between each breeding event and the next, 50% die. This continues to the end of their third breeding season at w ...
Populations & Population Growth
... population growth? • Create a model. • The simplest model assumes that people/organisms aren’t entering or leaving. • In this case growth rate (the speed of an increase or decrease in population size) depends only upon births and deaths. ...
... population growth? • Create a model. • The simplest model assumes that people/organisms aren’t entering or leaving. • In this case growth rate (the speed of an increase or decrease in population size) depends only upon births and deaths. ...
Chapter 42 – Population Ecology
... Population density – is the number of individuals per unit area or volume Population distribution – is the pattern of dispersal of individuals within the area of interest 3 patterns of distribution Uniform, Random, Clumped What factors can determine the density or distribution of a population? Abiot ...
... Population density – is the number of individuals per unit area or volume Population distribution – is the pattern of dispersal of individuals within the area of interest 3 patterns of distribution Uniform, Random, Clumped What factors can determine the density or distribution of a population? Abiot ...
Causes and Consequences of Spatial Heterogeneity
... Ecolog(ists) use(s) the concept of a landscape in two ways. The first, which considers a landscape as a specific area based on human scales, is intuitive: Landscapes are ecological systems that exist at the scale of kilometers and comprise recognizable elements such as forest patches, fields, and he ...
... Ecolog(ists) use(s) the concept of a landscape in two ways. The first, which considers a landscape as a specific area based on human scales, is intuitive: Landscapes are ecological systems that exist at the scale of kilometers and comprise recognizable elements such as forest patches, fields, and he ...
On the evolutionary ecology of species` ranges - People
... range of a species is a single habitat and this habitat has unstable dynamics, dispersal into a sink habitat may become advantageous. This implies that the array of habitats used by the species should expand. Such expansion can have both a direct effect on the range – namely, the sink habitat as wel ...
... range of a species is a single habitat and this habitat has unstable dynamics, dispersal into a sink habitat may become advantageous. This implies that the array of habitats used by the species should expand. Such expansion can have both a direct effect on the range – namely, the sink habitat as wel ...
Population Dynamics, Carrying Capacity
... • If the number of individuals added are balanced by those lost then there is zero population growth (ZPG) • Populations vary in their capacity for growth, also known as biotic potential. Intrinsic rate of growth (r) is the rate at which a population will grow if it had unlimited resources. • Carryi ...
... • If the number of individuals added are balanced by those lost then there is zero population growth (ZPG) • Populations vary in their capacity for growth, also known as biotic potential. Intrinsic rate of growth (r) is the rate at which a population will grow if it had unlimited resources. • Carryi ...
WILDLIFE PRESERVES
... Broadly speaking, wildlife preserves are areas of importance for wildlife, flora and fauna, or features of geological or other special interest, which are reserved and managed for conservation and to provide special opportunities for study and research. In turn, we can gain a better understanding ...
... Broadly speaking, wildlife preserves are areas of importance for wildlife, flora and fauna, or features of geological or other special interest, which are reserved and managed for conservation and to provide special opportunities for study and research. In turn, we can gain a better understanding ...
Shrublands habitat profile in the NH Wildlife Action Plan
... and Tash 2005). American woodcock are found in areas with an overstory canopy cover of 53-64% in diurnal sites and a shrub canopy cover of 75-87% (Dunford and Owen 1973, Morgenweck 1977). The vegetation structure requirements are not clear for the other species covered under this profile. Habitat Pa ...
... and Tash 2005). American woodcock are found in areas with an overstory canopy cover of 53-64% in diurnal sites and a shrub canopy cover of 75-87% (Dunford and Owen 1973, Morgenweck 1977). The vegetation structure requirements are not clear for the other species covered under this profile. Habitat Pa ...
Population Biology
... a) predation, parasitism (and disease, which is a form of parasitism) reduce growth rate b) predators and parasites are more likely to encounter and attack members of a population as its density increases c) competition, both between species and among members of this population, has greater impact a ...
... a) predation, parasitism (and disease, which is a form of parasitism) reduce growth rate b) predators and parasites are more likely to encounter and attack members of a population as its density increases c) competition, both between species and among members of this population, has greater impact a ...
Version o1 o2
... 32. A habitat meets most of the needs of the organisms that live in it. __________________ 33. Density- dependent limiting factors usually affect only small populations. __________________ 34. All of the members of a community belong to the same species. __________________ 35. An organism that eats ...
... 32. A habitat meets most of the needs of the organisms that live in it. __________________ 33. Density- dependent limiting factors usually affect only small populations. __________________ 34. All of the members of a community belong to the same species. __________________ 35. An organism that eats ...
Community Ecology (Bio 3TT3) - McMaster Department of Biology
... variables that the species utilizes in its habitat. This subset of the fundamental niche is known as the realized niche. Fundamental niche represents species potential or capability while the realized niche is often seen as being reduced by biotic factors such as competition or predation. For examp ...
... variables that the species utilizes in its habitat. This subset of the fundamental niche is known as the realized niche. Fundamental niche represents species potential or capability while the realized niche is often seen as being reduced by biotic factors such as competition or predation. For examp ...
Sink habitats can alter ecological outcomes for competing species
... environment for N breeding sites. Individuals exhibit lottery recruitment for breeding sites. To allow for competitive asymmetries in the species acquisition of breeding sites, let ci denote the rate at which an individual of species i acquires a breeding site, i.e. on average, an individual of spec ...
... environment for N breeding sites. Individuals exhibit lottery recruitment for breeding sites. To allow for competitive asymmetries in the species acquisition of breeding sites, let ci denote the rate at which an individual of species i acquires a breeding site, i.e. on average, an individual of spec ...
Plankton - MATES-Biology-I
... As adults the meroplankton are benthos (including intertidal organisms) or nekton. The meroplankton often ________________________________, to the extent that some were once thought to be separate species. Meroplanktonic larvae promote survival of the species: ____________________ carry the offspr ...
... As adults the meroplankton are benthos (including intertidal organisms) or nekton. The meroplankton often ________________________________, to the extent that some were once thought to be separate species. Meroplanktonic larvae promote survival of the species: ____________________ carry the offspr ...
Wildlife Lectures - CST Personal Home Pages
... significantly in size and then recovers • Events such as habitat loss, over harvest, or reintroduction can create bottlenecks and the magnitude of the effect on genetic diversity depends upon: – Number of individuals at lowest point – Length of time population remains depressed ...
... significantly in size and then recovers • Events such as habitat loss, over harvest, or reintroduction can create bottlenecks and the magnitude of the effect on genetic diversity depends upon: – Number of individuals at lowest point – Length of time population remains depressed ...
Clash of Classes Review Ecology 2014 2015.notebook
... 20 Which are two ways a population can decrease in size? A immigration and emigration B increased death rate and immigration C decreased birthrate and emigration D emigration and increased birthrate 21 When individuals of a population reproduce at a constant rate, it ...
... 20 Which are two ways a population can decrease in size? A immigration and emigration B increased death rate and immigration C decreased birthrate and emigration D emigration and increased birthrate 21 When individuals of a population reproduce at a constant rate, it ...
Population Dynamics, Carrying Capacity
... • If the number of individuals added are balanced by those lost then there is zero population growth (ZPG) • Populations vary in their capacity for growth, also known as biotic potential. • Intrinsic rate of growth (r)- is the rate at which a population will grow if it had unlimited resources. • Car ...
... • If the number of individuals added are balanced by those lost then there is zero population growth (ZPG) • Populations vary in their capacity for growth, also known as biotic potential. • Intrinsic rate of growth (r)- is the rate at which a population will grow if it had unlimited resources. • Car ...
Competition 1. What is competition? 2. Intra
... Competition occurs when individuals use a shared resource in short supply: There may not be enough of the resource for any given individual to survive or to reproduce as well as when more resource is present. Competition does not necessarily involve competitors ever meeting (if the competitors are m ...
... Competition occurs when individuals use a shared resource in short supply: There may not be enough of the resource for any given individual to survive or to reproduce as well as when more resource is present. Competition does not necessarily involve competitors ever meeting (if the competitors are m ...
WILDLIFE CORRIDORS
... Dispersal of the arboreal Sugar Glider (Petaurus breviceps) (see Figure 4.3) along a forested roadside in eastern Victoria was documented by Suckling (1984). He studied populations of gliders living in several forest fragments and a roadside corridor, and found that all known dispersal movements, of ...
... Dispersal of the arboreal Sugar Glider (Petaurus breviceps) (see Figure 4.3) along a forested roadside in eastern Victoria was documented by Suckling (1984). He studied populations of gliders living in several forest fragments and a roadside corridor, and found that all known dispersal movements, of ...
Lesson 2
... prevent the spread of disease-causing organisms that can lead to death. • Human populations in some parts of the world are decreasing in size because of factors like disease, drought, and natural disasters. ...
... prevent the spread of disease-causing organisms that can lead to death. • Human populations in some parts of the world are decreasing in size because of factors like disease, drought, and natural disasters. ...
Notes3 - McMaster Department of Biology
... dispersed ferns and flowering plants continued to increase at a steady pace (Fig. 3.**). However, sea dispersed flowering plants appear to have reached their maximum number during the first 30 years of colonization and then registered no further gains. The reason could be that no more species use th ...
... dispersed ferns and flowering plants continued to increase at a steady pace (Fig. 3.**). However, sea dispersed flowering plants appear to have reached their maximum number during the first 30 years of colonization and then registered no further gains. The reason could be that no more species use th ...
Food web structure and habitat loss
... critical values of habitat destruction, dc , at which a given species goes extinct. The inverse of such an extinction threshold could be considered as a measure of vulnerability to extinction due to habitat loss. In addition to the extinction threshold, the dependence of patch occupancy on habitat d ...
... critical values of habitat destruction, dc , at which a given species goes extinct. The inverse of such an extinction threshold could be considered as a measure of vulnerability to extinction due to habitat loss. In addition to the extinction threshold, the dependence of patch occupancy on habitat d ...
NOTES: Chapter 8.1 - How Populations Change In Size
... Small organisms, such as bacteria and insects, have short generation times and can reproduce when they are only a few hours or a few days old. ...
... Small organisms, such as bacteria and insects, have short generation times and can reproduce when they are only a few hours or a few days old. ...