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Which location would you expect to find the greater species diversity?
Species diversity is greatest in the tropics, particularly in tropical forests and coral reefs.
Where would you expect to find the greatest species richness?
Species richness is generally highest in tropical latitudes, and then decreases to the north and south, with zero species in the Arctic regions.
Under what conditions is species diversity the greatest?
“Species diversity is defined as the number of different species present in an ecosystem and relative abundance of each of those species.” Diversity is greatest when all the species present are equally abundant in the area.
Which ecosystem is richest in biodiversity?
Amazonia
Summary: Amazonia represents the quintessence of biodiversity – the richest ecosystem on earth. Yet a study by Smithsonian scientists, published this week in the journal Science, shows that differences in species composition of tropical forests are greater over distance in Panama than in Amazonia.
What evidence suggest that we could be experiencing a sixth mass extinction?
What evidence suggests that we could be experiencing a sixth extinction? Today, species loss seems to be accelerating as human population growth puts an increasing strain on habitats and wildlife.
Where would you expect to find the least species richness?
The arctic regions of the world have the least biodiversity because plants don’t survive in the extreme cold and ice that cover these regions year-round.
Which forest is richest in animal and plant diversity?
#1: Brazil. Brazil is the Earth’s biodiversity champion. Between the Amazon rainforest and Mata Atlantica forest, the woody savana-like cerrado, the massive inland swamp known as the Pantanal, and a range of other terrestrial and aquatic ecosystems, Brazil leads the world in plant and amphibian species counts.
What increases species diversity?
At regional scales, diversity is also increased by speciation and decreased by extinction. These decreases in diversity include those caused by regional extinction events that extirpate species from the region in question but not necessarily from all other regions.
What country has the lowest biodiversity?
The arctic regions of the world have the least biodiversity because plants don’t survive in the extreme cold and ice that cover these regions year-round. However, life does exist in the arctic regions, mostly affiliated with the seas that surround them.
Which region of the earth has the greatest biodiversity on earth?
Biodiversity and Conservation. Amazonian rain forest has the greatest biodiversity on earth. List any two hypotheses that are proposed by the biologists to account for the greater biological diversity. Tropical Amazonian rain forests in South America has greatest biodivesity.
What are the 5 mass extinctions on Earth?
Top Five Extinctions
- Ordovician-silurian Extinction: 440 million years ago.
- Devonian Extinction: 365 million years ago.
- Permian-triassic Extinction: 250 million years ago.
- Triassic-jurassic Extinction: 210 million years ago.
- Cretaceous-tertiary Extinction: 65 Million Years Ago.
What are the 6 extinctions?
Sea-level falls are associated with most of the mass extinctions, including all of the “Big Five”—End-Ordovician, Late Devonian, End-Permian, End-Triassic, and End-Cretaceous.