Why must predators in ecosystems in low NPP cover huge ranges to survive?
When a predator lives in a ecosystem that has a low NPP, it means that the predator will have to cover a much wider range in order to have all the needed energy that’s produced by those primary producers.
Why are there only a limited number of top predators in an ecosystem?
Because of this inefficiency, there is only enough food for a few top level consumers, but there is lots of food for herbivores lower down on the food chain. There are fewer consumers than producers. … Apex Predators: These species are at the top of the food chain and the healthy adults have no natural predators.
How does disturbance affect the environment?
Although disturbances tend to negatively affect populations of resident plants, animals, and other organisms in a given ecosystem, they provide some fugitive species with opportunities to move into and gain footholds in ecosystems whose biological communities once excluded them.
Which ecosystem would you expect to have the highest resistance which would have the highest resiliency Why?
Which ecosystem would you expect to have the highest resistance? Which would have the highest resiliency? Why? Ecosystem C would have the hugest resistance because the organisms have adopted to the often disruptions in their ecosystem.
Why are predators important in an ecosystem?
Predators have profound effects throughout their ecosystems. Dispersing rich nutrients and seeds from foraging, they influence the structure of ecosystems. And, by controlling the distribution, abundance, and diversity of their prey, they regulate lower species in the food chain, an effect known as trophic cascades.
What would happen if there were no predators in the forest?
What would happen if there were no predators in the forest? … No they would not change because they already had the genetics to change and they would have no need for camouflage from predators and no need to be darker or light.
How do predators affect the biodiversity of ecosystems?
Predation can have large effects on prey populations and on community structure. Predators can increase diversity in communities by preying on competitive dominant species or by reducing consumer pressure on foundation species.
Why do high and low levels of disturbance usually reduce species diversity?
Why do high and low levels of disturbance usually reduce species diversity? … High levels of disturbance are generally so disruptive that they eliminate many species from communities, leaving the community dominated by a few tolerant species.
Are disturbances good for an ecosystem?
In some ecosystems, disturbance is the critical factor in maintaining coexisting species. Effects of disturbance can be temporary or long term, but time is relative. Disturbance can cause the elimination of a species and result in major changes in species composition.
How can changes and disturbance in the environment affect the survival of the species?
(a) Climate change, droughts, starvation and disease
Climate change has altered physical and biological components of the environment, causing shifts in temperature ranges and rainfall indexes and altering the abundance and distribution of predator and prey species, as well as of pathogens and hosts (MacLeod et al.