This is because, just like humans, organisms in the ocean need nutrients to grow. The oceans get these essential nutrients from water that has run off from land.
Do oceans have high biodiversity?
The world’s oceans contain somewhere between 500,000 and 10 million marine species. bacteria, other microbes and viruses. Much of the biodiversity in the ocean, particularly in the deep sea and in the microbial ocean, is unknown, and up to 2,000 new species are described per year.
Why is ocean life so diverse?
“The oceans we see today are filled with a dizzying array of species in groups like fishes, arthropods, and mollusks, not because they had higher origination rates than groups that are less common, but because they had lower extinction rates over very long intervals of time.”
What causes higher biodiversity?
Unique Climates and Conditions
One of the most significant and naturally occurring causes of differences in biodiversity across the world is differences in climate. … On the other extreme, moist, tropical zones like the Amazon rainforest support some of the highest levels of biodiversity in the world.
What is biodiversity in the ocean?
Biodiversity can be defined in several ways, but it generally refers to the number of species types in a particular ecosystem. Marine biodiversity therefore refers to the species richness and abundance in the world’s oceans and seas. … Having diverse ecosystems makes organisms and systems more resilient to changes.
How does the ocean allow for such rich biodiversity?
Scientists estimate that 25 percent of all marine species live on coral reefs, making them one of the most diverse habitats in the world. Ocean life is not evenly distributed. Life in the euphotic zone is very diverse due to availability of sunlight and diversity of producers found in this zone.
Why is deep sea diversity so high?
He suggested that because the deep sea is monotonous and predictable (i.e., it is stable), populations have the evolutionary time to become newly specialized in how they feed. Over time, these populations become so specialized they evolve into totally new species, eventually driving diversity up.
What is high biodiversity?
High biodiversity is a habitat or ecosystem that has a high number of different species.
Which ocean has the most biodiversity?
It contains 45,389 km of coastline. There are 400 known fish species living in Arctic seas and adjacent waters, most living on or near the bottom. So, based on global fisheries and the overall biodiversity of coral reef ecosystems, the Pacific Ocean wins for most marine life.
Why do deserts have high biodiversity?
This is due to the high temperatures, low rainfall and a lack of available water. However, biodiversity increases close to desert water sources such as seasonal rivers and lakes and near to an oasis. … Some plants have the bulk of their biomass below the surface of the Earth where temperatures are cooler.
What ecosystem has a high biodiversity?
Example of ecosystem with high biodiversity is tropical rain forest as seen in Amazon basin of south America. Such forests are also thriving in parts of central Africa and also in islands of Indonesia. In marine environment, coral reefs are example of high biodiversity aquatic ecosystems.
What happens when there is high biodiversity?
Greater biodiversity in ecosystems, species, and individuals leads to greater stability. For example, species with high genetic diversity and many populations that are adapted to a wide variety of conditions are more likely to be able to weather disturbances, disease, and climate change.