Why and how would a new species have effect on the ecosystems?
It would have effect on ecosystems because it could have dieses that other animals have never encountered before. It would have effect on it because it its new.
How do volcanoes affect the ecosystem?
Volcanoes have negative and positive effects on ecosystems. A negative effect would be that they destroy some ecosystems. A positive effect would be that volcanic soil is very good for planting crops and farming. Another positive effect would be that they create new land for civilizations. Pioneer species, such as moss and lichen, could start an ecosystem from the volcanic soil.
Why are some alien species a threat to ecosystems?
The two most common reasons non-indiginous species are threats to ecosystems are these: 1) The new species takes resources, thus depriving indiginous species of those resources, and 2) The new species upsets the predator / prey balance in the existing ecosystem. For example, if you were to introduce snakes in an area with no snakes, that could have the effect of depleting the population of rodents in that area, due to snakes' appetite for rodents…
What effect has humans had on endangered animals?
Nearly all endangered animals are endangered because of humans. We threaten them with habitat destruction, excessive hunting, or pollution. In addition, species such as rats that we've purposefully or accidentally put in environments where they didn't naturally live have caused extensive damage to their new ecosystems and threatened many species.
Why do alien speecies often thrive in their new ecosystems?
When an alien species enters into a new environment it has no natural predators. Anything that could eventually become a predator would be standoff-ish at first since the alien represents something new and is thus feared. Once the new predators realize how to kill the alien species their population will deminish and eventually become under control.
How do new species change ecosystems?
Invasive species enter ecosystems and can change them drastically. They often create new ecological niches that deprive the existing species of valuable resources. This will throw off the ecosystem's delicate cycle of life. For example, plants create the food for mice, and bees spread the pollen from these plants. If you introduce an invasive species such as a bird that eats the bees, then the plants do not pollinate. Therefore, the mice will die because…
How does ecosystems function as a dynamic systems?
Introduction of new elements, whether biotic or abiotic, into an ecosystem tend to have a disruptive effect. In some cases, this can lead to ecological collapse or "trophic cascading" and the death of many species within the ecosystem. Often, however, ecosystems have the ability to rebound from a disruptive agent. The difference between collapse or a gentle rebound is determined by two factors-the toxicity of the introduced element and the resiliency of the original ecosystem…
What is the effect of people introducing new species to an area?
well say now you put an owl into an area where there were a lot of moles, mice etc then there would be less moles and mice because the owls will be eating them. theres many other examples like that. just think of it that way. Acuatually the effect of peope introducing a new species can be good or bad it just changes it can be accidally or puorposley new spiecies can take the food…
How can new species develop from one current species?
This is called anagenesis and takes place when enough genetic change has happened to a whole species that a new species name is assigned, which is a bit controversial with taxonomists. Cladogenesis, the splitting of one species into two daughter species seems to be much more common. Some species would have too large a range to be subject to anagenesis it would seem.
What are the possible consequences of global warming for organisms living in arctic ecosystems?
There may be reduced space for ice-dwelling species and increased competition from temperate species. Arctics species may be forced to migrate in order to find food and habitat. The patterns of seasonal migration and distribution of prey species may also change. The activity of decomposes may increase. In addition, some species may be driven to extinction due to the inability to adapt quickly to new changes and pest species may become more successful.
What do animals need to travel through a food chain?
Well I think that the factor of extiction of one species ot he introduction of an alien species into the ecosystem will affect the food chain, for some species will mean going up and for other species will mean going down in the food chain. That is why many countries forbid the introduction of foreign plants or animals into their ecosystems. One big example I can think of is the migration of African bees in…
How can isolation of groups be involved in speciation?
Speciation is the evolution of new species from existing species and that is what has happened here. If a species was split up due to some sort of natural disaster, each party would evolve on their own because of the isolation. They will adapt to the new environment and eventually develop a new gene pool - this is when a new species has developed.
Do geographic barriers guarantee the formation of new species?
Not guarantee, but it is rather helpful. It is not too likely that two population split by a solid geographic barrier would not begin to speciate. To not speciate they would have to not have any beneficial mutations over time that would carry their gene pools apart. Then there is the possibility of founder effect by having the frequency of alleles vary between the two populations in a random manner. So, not guarantees, but even…
Is it difficult to discover a new species?
Probably the toughest thing about discovering a new species is being familiar with the ones that are known well enough to tell if a new example belongs to a new species. So, I would say yes, it is difficult, just because it takes a long time to learn about whatever species you are studying, and get to know it well enough.
What is an edge effect Explain how change in an ecosystem's edges can affect organisms?
Edge effects are different conditions along the boundaries of an ecosystem. Change in an ecosystem's edge can affect an organism because animals from one area might migrate from the area or move to the new edge, thereby bringing species from different ecosystems in contact with one another. Read more: http://wiki.answers.com/Q/How_change_in_an_ecosystem's_edge_can_affect_organism#ixzz1wV9rwfti
Introduced species can threaten biodiversity because they can?
Introducing new species threatens biodiversity in several ways. The new species may upset the food chain in an area. If a species grows faster than native species, they may eat all of the food, leaving little for the natural fauna. The new species may also, conversely, be great food for an existing species which would give one species a great growth advantage over others.
How can changes in landscapes and environment lead to new species?
If there is a new environment, it will likely attract species used to that environment. Maybe species not yet seen. If you don't count that as a new species then consider this, the new animals and species attracted to the new environment and landscapes might have a chance of breeding with other animals and species, creating a new species.
What is the impact of introduced species on native species?
Introduced species can either have a: positive effect, negative effect, or no effect at all. In most cases, introduced species will have no effect at all, and rarely a positive effect unless introduced for that exact reason. Ecologists usually use the "Tens Rule", which states that (on average) one out of every ten introduced species will become established; one out of every ten of those established species will become common enough to be pests. Following…
What is the difference between mass extinction and background extinction?
The difference between the two is that background extiction is apparent over long periods of time. Some exsiting species become extinct while new species appear through revolution. Mass extinction is thought to happen when there is a relatively sudden change to the Earth's ecosystems, making them both unsustainable and unsustaining.
How can two species stop being able to breed with one another?
If you have a species from which a new species is produces, how is it that that new species is produces such that it cannot breed with the parent species? We can say that a new species arises and that interbreeding is possible, but eventually you merge species, or the species weren't all that distinct to begin with. But how can a new species arise where interbreeding is impossible? if one member were to change…
When does the greenhouse effect become a problem?
It is only a problem when the changes become unpleasant for us. As the weather changes, new plant and animal species will move into and out of ecosystems, water levels will rise, rainfall patterns will change, and other changes will become evident. These changes could cause large migrations of people, loss of seaside cities, and farmers going out of business, not to mention droughts, floods, and new areas affected by diseases. Some of these problems…