This idea is also referred to as the latitudinal diversity gradient, meaning that as you move from the equator towards the poles, diversity lessens. … That the are is relatively stable in terms of environment when compared to polar regions has also been suggested as a reason for increased biodiversity at the equator.
Why does biodiversity decrease away from the equator?
Speciation is generally a function of time and environmental stability, so if conditions are too harsh, it is difficult for the species to survive and adapt. This results in decrease in biodiversity towards the poles. Species diversity decreases as we move away from the equator towards the poles.
Does biodiversity decrease closer to the equator?
Species diversity is higher at the equator than at the poles. In biological terms, this is referred to as the latitudinal diversity gradient (LDG), in which the number of species increases from the poles to the Equator. This ranks among the broadest and most notable biodiversity patterns on Earth.
Why is biodiversity higher near the equator?
There might be more biodiversity near the equator because it’s warmer year round, allowing organisms to continue growing. Locations away from the equator will have cold winters that will slow growth for microorganisms, plants and animals.
Why does biodiversity decrease with latitude?
Species density is higher in the tropics (low latitude) than in temperate regions (high latitude) resulting in a latitudinal biodiversity gradient (LBG).
What is the main cause of loss of biodiversity?
Biodiversity, or the variety of all living things on our planet, has been declining at an alarming rate in recent years, mainly due to human activities, such as land use changes, pollution and climate change.
What happens as we move away from the equator?
Answer: In any sphere the circumference is lengthier at 0°. So equator is lengthiest latitude and the degree increases or move away from equator to pole the circumference of globe decreases hence latitudinal length also decreases. The length of a parallel increases as we move away from the poles towards the equator.
Why does biodiversity tend to be higher in areas closest to the equator or tropical areas quizlet?
Why are areas near the equator have more species richness? Greater amounts of solar energy, heat, and humidity at tropical latitudes lead to more plant growth, making areas nearer the equator more productive and able to support larger numbers of animals.
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.
Why is there greater biodiversity in the tropics?
– Tropical latitudes produce more solar power than temperate zones, resulting in high productivity and high diversity of biodiversity. – There are fewer seasonal changes in tropical regions and they have a more or less stable climate. This encourages the specialization of the niche and hence the high wealth of animals.
How ecosystem productivity decreases as we move away from equator?
The intensity of sun light decreases as we move away from the equator towards the poles and hence productivity. 3. In polar regions the temperature is very low so most of the organisms cannot survive in that habitat.
Why species diversity increases as you move geographically from the polar regions to the equator?
Why does species diversity increase as you move geographically from the polar regions to the equator? The warmer climate around the equator provides a greater abundance of resources, more solar energy, and warmer temperatures that allow for longer growing seasons and more ectothermic species.
What happened to biodiversity with change in latitude?
Increasing latitude decreases biodiversity. The equator has zero degrees latitude and as a result receives the most direct sunlight.
How does biodiversity vary with latitude?
The decrease in diversity when moving from lower latitudes towards higher latitudes is referred to as Latitudinal Diversity Gradient. Generally it is observed that the diversity richness is more in the areas near the equator than at the poles. … Altitude also affects the diversity richness inversely.
Why does latitude affect a regions 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.