Slide 1
... Amphibian populations are in rapid decline around the globe. Habitats that amphibians currently occupy should be studied to determine the complex habitat requirements of each species. Many amphibian populations in the North East require vernal pools (or depressional wetlands) to use as breeding site ...
... Amphibian populations are in rapid decline around the globe. Habitats that amphibians currently occupy should be studied to determine the complex habitat requirements of each species. Many amphibian populations in the North East require vernal pools (or depressional wetlands) to use as breeding site ...
Behavioral barriers to non-migratory movements of birds
... clearcuts (Machtans et al. 1996). One implication of these observations is that the transient nature of regenerating clearcuts should reduce their long-term impact on population persistence of forest birds compared to other habitat types that fragment forests, such as agricultural fields and roads ( ...
... clearcuts (Machtans et al. 1996). One implication of these observations is that the transient nature of regenerating clearcuts should reduce their long-term impact on population persistence of forest birds compared to other habitat types that fragment forests, such as agricultural fields and roads ( ...
niche principles and 4 case studies
... If a pair of species have similar niches in allopatric areas, and dissimilar niches in sympatric areas, this is good evidence for character displacement, which is a shift in niche to avoid interspecific competition. Can also use translocation experiments to shift individuals from areas of allopatry ...
... If a pair of species have similar niches in allopatric areas, and dissimilar niches in sympatric areas, this is good evidence for character displacement, which is a shift in niche to avoid interspecific competition. Can also use translocation experiments to shift individuals from areas of allopatry ...
population dynamics
... 1. The age at which reproduction begins 2. How often the organism reproduces 3. How many offspring are produced per reproductive episode ...
... 1. The age at which reproduction begins 2. How often the organism reproduces 3. How many offspring are produced per reproductive episode ...
The interplay of pollinator diversity, pollination services
... fragmentation study is the inclusion of the landscape context at multiple spatial scales. They found that stingless bee abundance is enhanced by the proportion of forested area in the surrounding landscape with the most significant scale of response providing an estimate of average foraging distance ...
... fragmentation study is the inclusion of the landscape context at multiple spatial scales. They found that stingless bee abundance is enhanced by the proportion of forested area in the surrounding landscape with the most significant scale of response providing an estimate of average foraging distance ...
Relationships in Ecosystems
... Water is a major ingredient of the fluid inside the cells of all organisms. Soil is a mixture of mineral and rock particles, the remains of dead organisms, water, and air. The decaying matter found in soil is called humus. Sunlight is the energy source for almost all life on Earth. Temperatu ...
... Water is a major ingredient of the fluid inside the cells of all organisms. Soil is a mixture of mineral and rock particles, the remains of dead organisms, water, and air. The decaying matter found in soil is called humus. Sunlight is the energy source for almost all life on Earth. Temperatu ...
What is ecology?
... What is Ecology?? • The study of interactions that take place between organisms and their environment. • It explains how living organisms affect each other and the world they live in. copyright cmassengale ...
... What is Ecology?? • The study of interactions that take place between organisms and their environment. • It explains how living organisms affect each other and the world they live in. copyright cmassengale ...
Large Copper Action Plan
... which have great similarities to extinct British ones, are particularly at risk as they are probably restricted to one locality in the Netherlands. It is protected in the UK for sale only. In north-west Europe L. dispar breeds in open fenland habitat where its larvae feed exclusively on Great Wate ...
... which have great similarities to extinct British ones, are particularly at risk as they are probably restricted to one locality in the Netherlands. It is protected in the UK for sale only. In north-west Europe L. dispar breeds in open fenland habitat where its larvae feed exclusively on Great Wate ...
Density-Dependent Limiting Factors
... eat so much balsam fir that the population of these favorite food plants drops. When this happens, moose may suffer from lack of food. ...
... eat so much balsam fir that the population of these favorite food plants drops. When this happens, moose may suffer from lack of food. ...
442_2011_2138_MOESM1_ESM - Springer Static Content Server
... Bacteria can improve their habitat by increasing water permeability of the leaf cuticle. Differences in habitat quality are primarily responsible for the variation in population density of yeast-like fungi among leaves in nature. Habitat suitability for multiplication of bacteria can enhance dispers ...
... Bacteria can improve their habitat by increasing water permeability of the leaf cuticle. Differences in habitat quality are primarily responsible for the variation in population density of yeast-like fungi among leaves in nature. Habitat suitability for multiplication of bacteria can enhance dispers ...
Within outlying mean indexes: refining the OMI analysis for
... across subsets, because average habitat conditions most likely vary from one subset to another. To our best knowledge, K-select analyses have not yet been performed on species assemblages, but rather on several populations of one species (reindeer) (Pape & Löffler, 2015). In this case study, the au ...
... across subsets, because average habitat conditions most likely vary from one subset to another. To our best knowledge, K-select analyses have not yet been performed on species assemblages, but rather on several populations of one species (reindeer) (Pape & Löffler, 2015). In this case study, the au ...
Lecture - Amphibians
... • Can function in mate choice (e.g., male size) • Vocalization is a tradeoff: • Costs: 1) Vocalization energetically expensive 2) Vocalization announces location • Benefits: Tungara Frogs: “Whine – cluck” Females prefer / bats prefer “Whine” Females / bats less preference “Whine – cluck” only observ ...
... • Can function in mate choice (e.g., male size) • Vocalization is a tradeoff: • Costs: 1) Vocalization energetically expensive 2) Vocalization announces location • Benefits: Tungara Frogs: “Whine – cluck” Females prefer / bats prefer “Whine” Females / bats less preference “Whine – cluck” only observ ...
Ecology
... • Affects populations ability to survive • small populations - more likely to go extinct ...
... • Affects populations ability to survive • small populations - more likely to go extinct ...
Food-Web Models Predict Species Abundances in Response to Habitat Change
... upper trophic levels of food webs [1–3]. However, several pieces of evidence suggest that habitat area alone may be insufficient to predict changes in population size. Predictions of ecological models [4,5], patterns of food-web structure in small versus large habitat fragments [6], and recent observ ...
... upper trophic levels of food webs [1–3]. However, several pieces of evidence suggest that habitat area alone may be insufficient to predict changes in population size. Predictions of ecological models [4,5], patterns of food-web structure in small versus large habitat fragments [6], and recent observ ...
AN ABSTRACT OF THE THESIS OF
... procedures and farming practices create unevenly distributed aquatic vegetation patches ...
... procedures and farming practices create unevenly distributed aquatic vegetation patches ...
population - AP Environmental Science
... As population density increases, each individual has access to an increasingly smaller share of available resources. Ultimately, there is a limit to the number of individuals that can occupy a habitat. Ecologists define carrying capacity (K) as the maximum stable population size that a ...
... As population density increases, each individual has access to an increasingly smaller share of available resources. Ultimately, there is a limit to the number of individuals that can occupy a habitat. Ecologists define carrying capacity (K) as the maximum stable population size that a ...
in population size
... A fur seal population on St. Paul Island, Alaska The numbers of male fur seals with harems were reduced to very low numbers due to hunting until 1911. After hunting was banned, the population increased dramatically and now oscillates around an equilibrium number, presumably the islands carrying capa ...
... A fur seal population on St. Paul Island, Alaska The numbers of male fur seals with harems were reduced to very low numbers due to hunting until 1911. After hunting was banned, the population increased dramatically and now oscillates around an equilibrium number, presumably the islands carrying capa ...
Lesson 1 - Introduction to Ecology - Hitchcock
... How are all living things connected? • Each individual organism has a role to play in the flow of energy and matter. • In this way, organisms are connected to all other organisms, and their relationships affect each one’s growth and survival. • A biotic factor is an interaction between organisms in ...
... How are all living things connected? • Each individual organism has a role to play in the flow of energy and matter. • In this way, organisms are connected to all other organisms, and their relationships affect each one’s growth and survival. • A biotic factor is an interaction between organisms in ...
POPULATIONS
... the fastest rate at which its populations can grow. This rate is limited by the maximum number of offspring that each member of the population can produce, which is called its reproductive potential. Some species have much higher reproductive potentials than others. Darwin calculated that it could t ...
... the fastest rate at which its populations can grow. This rate is limited by the maximum number of offspring that each member of the population can produce, which is called its reproductive potential. Some species have much higher reproductive potentials than others. Darwin calculated that it could t ...
intermediate disturbance hypothesis
... are restricted to square metres”. However, the community extent is not relevant, what is relevant is the relative sizes of the disturbance patch and the sampling area. If the disturbance patch is larger than the sampling area, we are considering withinpatch mechanisms (Fig. 1a); if the disturbancepa ...
... are restricted to square metres”. However, the community extent is not relevant, what is relevant is the relative sizes of the disturbance patch and the sampling area. If the disturbance patch is larger than the sampling area, we are considering withinpatch mechanisms (Fig. 1a); if the disturbancepa ...
Non-optimal animal movement in human
... individuals that are motivated to move away from their current site. X’s represent individuals that died while attempting to move through the matrix to reach a new site. When habitat is patchy and the matrix is risky (a), movements across the habitat boundary into the matrix frequently result in mor ...
... individuals that are motivated to move away from their current site. X’s represent individuals that died while attempting to move through the matrix to reach a new site. When habitat is patchy and the matrix is risky (a), movements across the habitat boundary into the matrix frequently result in mor ...
WESTERN SCREECH OWL
... How could your design recommendations be strengthened by specific aesthetic approaches to make them a desirable part of the urban fabric, especially if those recommendations are not part of common landscape practices or aesthetics? What critical knowledge gaps might exist for this species? Western S ...
... How could your design recommendations be strengthened by specific aesthetic approaches to make them a desirable part of the urban fabric, especially if those recommendations are not part of common landscape practices or aesthetics? What critical knowledge gaps might exist for this species? Western S ...
Ecology
... 167. Distinguish between a quantitative and a qualitative survey by writing a sentence about each. 168. 1. Name one plant from the ecosystem you have studied. 2. Describe how you carried out a quantitative survey to determine its frequency. 169. As a result of pollution, a species of plant disappear ...
... 167. Distinguish between a quantitative and a qualitative survey by writing a sentence about each. 168. 1. Name one plant from the ecosystem you have studied. 2. Describe how you carried out a quantitative survey to determine its frequency. 169. As a result of pollution, a species of plant disappear ...
Spatial dynamics of mutualistic interactions
... whom does not affect the reproductive output of the source community, persistence of sink communities is guaranteed as long as the survivorship of long-distance dispersers exceeds a lower threshold. In contrast, if dispersal involves emigrants that constitute a fraction of the source community’s rep ...
... whom does not affect the reproductive output of the source community, persistence of sink communities is guaranteed as long as the survivorship of long-distance dispersers exceeds a lower threshold. In contrast, if dispersal involves emigrants that constitute a fraction of the source community’s rep ...
The effect of land-use gradients on composition
... study species, it has been suggested this is due to human aversion to rotting substances in combination with the ephemeral nature of carrion has led to a paucity of information on scavenger communities, ecology and dynamics (Houston, 1979). Additionally, previous research on ecology of scavengers ha ...
... study species, it has been suggested this is due to human aversion to rotting substances in combination with the ephemeral nature of carrion has led to a paucity of information on scavenger communities, ecology and dynamics (Houston, 1979). Additionally, previous research on ecology of scavengers ha ...