Why does biodiversity change with latitude?

Species density is higher in the tropics (low latitude) than in temperate regions (high latitude) resulting in a latitudinal biodiversity gradient (LBG).

Why does latitude affect a region’s biodiversity?

Biodiversity higher in the tropics, but species more likely to arise at higher latitudes. Summary: … The results suggest that the latitudinal diversity gradient may be due higher species turnover — speciation counterbalanced by extinction — towards the poles than near the equator.

How does latitude affect species richness?

Global scale analyses have recently revealed that the latitudinal gradient in marine species richness is bimodal, peaking at low-mid latitudes but with a dip at the equator; and that marine species richness decreases with depth in many taxa.

Why does species diversity increase towards the equator?

A new study led by Oxford Earth Sciences’ Associate Professor Erin Saupe suggests that higher species diversity in equatorial regions may be caused by higher rates of speciation (the formation of new and distinct species in the course of evolution), driven by changes in precipitation across space and through time.

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What is latitude gradient of biodiversity?

Latitudinal gradients of biodiversity are biogeographic patterns that define the way in which components of taxonomic, phylogenetic, functional, genetic, or phenetic dimensions change with latitudinal position on the surface of the earth.

Which latitude will have more biodiversity?

For more than three centuries Western science has known that biodiversity is greatest in the tropics. European explorers and traders returned from Africa, Asia and the Americas with thousands of specimens of previously unknown kinds of animals and plants.

How does latitude affect species diversity and richness?

Explanation: This idea is also referred to as the latitudinal diversity gradient, meaning that as you move from the equator towards the poles, diversity lessens. This pattern is one of the oldest observed in ecology.

Why does species richness decrease with latitude?

Ultimately, the latitudinal gradient in species richness must be a consequence of a greater period of net diversification in the tropics, likely following the origins of life there, or higher speciation rates and/or lower extinction rates at low latitudes compared with other regions.

What is the relationship between diversity and latitude quizlet?

What is the relationship between diversity and latitude? As latitude increases, moving away from the equator at the center of the Earth toward either the North Pole or the South Pole, biodiversity decreases.

Is biodiversity has no effect on change in latitude?


Why is biodiversity so much greater in the tropics than in higher latitudes?

The higher temperatures in the tropics cause higher rates of metabolism, ecological dynamics and coevolutionary processes, which generate and maintain higher biodiversity.

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What latitude is Equator?

Latitude lines are labeled from the north pole (90 degrees north) to the equator (0 degrees) and down to the south pole (90 degrees south).