enteromoropha flexuosa
... green alga found wherever there is freshwater intrusion, such as freshwater stream or underwater spring input to the ocean. It is often associated with coastal areas of high nutrients, including areas with residential and industrial development. E. flexuosa is considered an invasive and fouling spec ...
... green alga found wherever there is freshwater intrusion, such as freshwater stream or underwater spring input to the ocean. It is often associated with coastal areas of high nutrients, including areas with residential and industrial development. E. flexuosa is considered an invasive and fouling spec ...
Genetic diversity - THE GEOGRAPHER ONLINE
... 2. All the giraffes have competition for resources (food and space) 3. This competition would lead to the death of some individuals (mainly shorter necked ones, as their food is also eaten by all the other short necked animals). Whereas others would survive (the longer necked ones have an advantage ...
... 2. All the giraffes have competition for resources (food and space) 3. This competition would lead to the death of some individuals (mainly shorter necked ones, as their food is also eaten by all the other short necked animals). Whereas others would survive (the longer necked ones have an advantage ...
TE Notes word version
... Shows the decrease in usable energy available at each succeeding trophic level in a food chain or web. Energy Flow in an Ecosystem: Losing Energy in Food Chains and Webs In accordance with the 2nd law of thermodynamics, there is a decrease in the amount of energy available to each succeeding org ...
... Shows the decrease in usable energy available at each succeeding trophic level in a food chain or web. Energy Flow in an Ecosystem: Losing Energy in Food Chains and Webs In accordance with the 2nd law of thermodynamics, there is a decrease in the amount of energy available to each succeeding org ...
Change and the Environment Completed Notes
... C. The pioneer species breakdown the rock to form soil. This allows other species to grow among the mosses and lichens. Eventually the other species out compete with the pioneer species and change the community. D. At each stage, competition among the species causes a change in the dominant communit ...
... C. The pioneer species breakdown the rock to form soil. This allows other species to grow among the mosses and lichens. Eventually the other species out compete with the pioneer species and change the community. D. At each stage, competition among the species causes a change in the dominant communit ...
4 Species Interactions and Community Ecology
... 2. Introduced species may become invasive when limiting factors that regulate their population growth are absent. 3. In most cases, ecologists view invasive species as having overall negative impacts on ecosystems. 4. In rare cases, non-native species like the honeybee provide important economic ben ...
... 2. Introduced species may become invasive when limiting factors that regulate their population growth are absent. 3. In most cases, ecologists view invasive species as having overall negative impacts on ecosystems. 4. In rare cases, non-native species like the honeybee provide important economic ben ...
PRINCIPLES OF PHYLOGENETICS: ECOLOGY
... community assembly processes and community phylogenetic structure. If we use a single metric, such as NRI, it can either be positive, not different from 0, or negative. Yet, there are many different processes that may shape this statistic, depending on the scale of the study, including filtering, co ...
... community assembly processes and community phylogenetic structure. If we use a single metric, such as NRI, it can either be positive, not different from 0, or negative. Yet, there are many different processes that may shape this statistic, depending on the scale of the study, including filtering, co ...
How can they be stopped? - Environmental Studies Program
... maintenance of genetic diversity source and sink populations controls on immigration ...
... maintenance of genetic diversity source and sink populations controls on immigration ...
Ch. 2 - Ecology
... Depend directly or indirectly for food, shelter, reproduction, or protection ...
... Depend directly or indirectly for food, shelter, reproduction, or protection ...
Chapter 17 Factors Influencing the Structure of Communities
... 17.6 Environmental Heterogeneity Influences Community Diversity As environmental conditions change from location to location, so will the set of species that can potentially occupy the area and the way they interact. Environmental conditions are typically not homogeneous even within a given commu ...
... 17.6 Environmental Heterogeneity Influences Community Diversity As environmental conditions change from location to location, so will the set of species that can potentially occupy the area and the way they interact. Environmental conditions are typically not homogeneous even within a given commu ...
Are transformer weeds ecological rule breakers?
... explored ecologically. Here we consider transformer weed invasion in the context of ecological community assembly theory. In each case we ask whether and how transformer species break these ecological rules and flaunt ecological theory. Are transformer weeds ecologically different from other plant i ...
... explored ecologically. Here we consider transformer weed invasion in the context of ecological community assembly theory. In each case we ask whether and how transformer species break these ecological rules and flaunt ecological theory. Are transformer weeds ecologically different from other plant i ...
Document
... Some species of fish, wildlife and plants are now extinct “as a consequence of economic growth and development untempered by adequate concern and conservation.” ...
... Some species of fish, wildlife and plants are now extinct “as a consequence of economic growth and development untempered by adequate concern and conservation.” ...
File
... 438 MYA – marine organism’s 360 MYA – marine organism’s 245 MYA – 80% of all species 65 MYA – dinosaurs ...
... 438 MYA – marine organism’s 360 MYA – marine organism’s 245 MYA – 80% of all species 65 MYA – dinosaurs ...
Great Cats and Rare Canids Act of 2005
... throughout a vast region in Tibet and other parts of China. Threats to this population include habitat fragmentation, diminished prey base, hunting and poisoning programs intended for other animals, as well as conflict with local villages due to livestock depredation. There is demand for snow leopar ...
... throughout a vast region in Tibet and other parts of China. Threats to this population include habitat fragmentation, diminished prey base, hunting and poisoning programs intended for other animals, as well as conflict with local villages due to livestock depredation. There is demand for snow leopar ...
Knapweed in the Web
... doesn’t work in areas where many species of exotics occupy huge areas. A common approach is to kill these plants with herbicides. Yet while effective, this can also negatively influence native plant species as well as wildlife. It can also be prohibitively expensive. An alternative approach to remov ...
... doesn’t work in areas where many species of exotics occupy huge areas. A common approach is to kill these plants with herbicides. Yet while effective, this can also negatively influence native plant species as well as wildlife. It can also be prohibitively expensive. An alternative approach to remov ...
Speciation - WordPress.com
... Intrinsic mechanisms invol ve changes to organisms that prevent interbreeding In allopatric s peciation, intrinsic mechanisms come into pl ay once populations are physically separated In sympatric s peciati on, intrinsic mechanisms are the onl y ones invol ved ...
... Intrinsic mechanisms invol ve changes to organisms that prevent interbreeding In allopatric s peciation, intrinsic mechanisms come into pl ay once populations are physically separated In sympatric s peciati on, intrinsic mechanisms are the onl y ones invol ved ...
Biology I Jeopardy Chapters 2-5: Ecology
... Exotic species- grow at an exponential rate because they are not immediately vulnerable to local competitors or predators as are native species. This can lead to the disappearance of native species. ...
... Exotic species- grow at an exponential rate because they are not immediately vulnerable to local competitors or predators as are native species. This can lead to the disappearance of native species. ...
Varanus rosenbergi Heath Goanna
... Para Reservoir and Hale CP.3 It may also occur at Newland Head CP (M. Hutchinson pers. comm.). A recent call for community sightings of the Heath Goanna generated 50 records for the period 20042009 (K. Long pers. comm. 2009). These observations confirm core populations occur in the Mount Compass are ...
... Para Reservoir and Hale CP.3 It may also occur at Newland Head CP (M. Hutchinson pers. comm.). A recent call for community sightings of the Heath Goanna generated 50 records for the period 20042009 (K. Long pers. comm. 2009). These observations confirm core populations occur in the Mount Compass are ...
Invasive Species
... Step 2.1: Additional human disturbances can continue to occur long after the initial disturbance that allowed the invasive species to become established. For example, after house development is built on an area that previously had habitat, disturbances may continue to occur from the repeated mow ...
... Step 2.1: Additional human disturbances can continue to occur long after the initial disturbance that allowed the invasive species to become established. For example, after house development is built on an area that previously had habitat, disturbances may continue to occur from the repeated mow ...
Extinctions: Past and Present
... Ohio, on my way to Louisville. In passing over the barrens a few miles beyond Hardensburgh, I observed the pigeons flying from northeast to southwest, in greater numbers than I though I had ever seen them before…” ...
... Ohio, on my way to Louisville. In passing over the barrens a few miles beyond Hardensburgh, I observed the pigeons flying from northeast to southwest, in greater numbers than I though I had ever seen them before…” ...
Complicated Relationships in Nature
... organisms can eat it, and the ability to reproduce. In other words, the niche is the role that an organism plays in its ecosystem. It also refers to the temperature, nutrients, and habitat necessary to survive. ...
... organisms can eat it, and the ability to reproduce. In other words, the niche is the role that an organism plays in its ecosystem. It also refers to the temperature, nutrients, and habitat necessary to survive. ...
Jeff Leppo, Stoel Rives
... species are listed as endangered • ESA take prohibitions do not automatically apply to “threatened” species • FWS has adopted a general 4(d) rule applying take prohibitions subject to species specific limitations • NMFS adopts species specific 4(d) regulations that apply or limit application of the ...
... species are listed as endangered • ESA take prohibitions do not automatically apply to “threatened” species • FWS has adopted a general 4(d) rule applying take prohibitions subject to species specific limitations • NMFS adopts species specific 4(d) regulations that apply or limit application of the ...
Now you see them, now you don`t! – population crashes of
... Less well known is the phenomenon of a spontaneous collapse, in which a non-indigenous species is well into the increase phase of an invasion, or even fairly widely established, but then, without management actions, undergoes an apparently spontaneous decline, sometimes all the way to local extincti ...
... Less well known is the phenomenon of a spontaneous collapse, in which a non-indigenous species is well into the increase phase of an invasion, or even fairly widely established, but then, without management actions, undergoes an apparently spontaneous decline, sometimes all the way to local extincti ...
Food Chains - Montgomery County Schools
... particular community. They occupy specific habitats and have specific niches in their native environment. They have natural predators that help to keep their populations in check. ...
... particular community. They occupy specific habitats and have specific niches in their native environment. They have natural predators that help to keep their populations in check. ...
Introduced species
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.