Coral reefs in the Indo-Pacific constitute the centre of diversity for marine fishes, whereas continental freshwater fishes are most diverse in large river basins of tropical rainforests, especially the Amazon, Congo, and Mekong basins.
Where is most marine biodiversity?
The ocean contains a wealth of biodiversity, and most of this diversity lives in the sunlit area called the euphotic zone (see Distribution of Life, page 45, for more information).
What areas have higher biodiversity?
#1: Brazil. Brazil is the Earth’s biodiversity champion. Between the Amazon rainforest and Mata Atlantica forest, the woody savanna-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.
Which lake has the greatest diversity of fishes?
With more than 1000 fish species, Lake Malawi has more distinct fish species than any other lake in the world.
Which country has the richest marine biodiversity?
Tropical reefs are the richest marine ecosystems on earth and those found in the Philippines boast a diversity of life and colour that is unparalleled. The Philippines is part of the Coral Triangle, the epicenter for marine biodiversity and what is considered the Amazon of the Sea.
Which ecosystem is richest in biodiversity?
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 leads to high 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.
Do lakes have high or low biodiversity?
Ecosystems that are based upon freshwater, such as lakes and rivers, also have high biodiversity. Habitats that are both marine and freshwater (estuaries and salt marshes) are some of the harshest areas on the planet to live. Therefore, the biodiversity in these areas is quite low.
What is largest freshwater fish in North America?
The white sturgeon is the largest freshwater fish in North America. White sturgeon have been reported to reach lengths of 15-20 feet and weights of nearly one ton. The second largest freshwater fish in North America is the alligator gar.
What is the biggest fish in Lake Malawi?
The Chimwi fish weighed 3.6 kg and measured 63 cm long, and Clement said, “People in the village were shocked to see such a big fish again. Many had not seen this species of fish for more than 15 years and for some it was their first time to see this fish.”
Which country has the lowest biodiversity?
This is causing species around the planet to decline at a concerning speed. A new analysis looking into how much biodiversity is left in different countries around the world has shown that the UK has some of the lowest amounts of biodiversity remaining.
Which ocean is rich in fish?
It occupies about one-fifth of the Earth’s surface. The ocean has some of the world’s richest fishing resources, especially in the waters covering the shelves.