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Ansonia penangensis is a species of toad in the family Bufonidae. It is endemic to Penang Island, Malaysia. [2] Records from elsewhere represent other species; the mainland records are referable to Ansonia malayana and Ansonia jeetsukumarani. [2] [3] Its natural habitats are rocky streams in rainforests. [1]
The waters around Sipadan island are the most biodiverse in the world. [1] Bordering East Malaysia, the Sulu Sea is a biodiversity hotspot, with around 600 coral species and 1200 fish species. Five species of sea turtles inhabit the area, [16] along with 20 species of sea snake. [1] The dugong is found around Sabah and in the Strait of Johor. [5]
Penang Island is physically connected to mainland Seberang Perai by two road bridges – the 13.5 km (8.4 mi) Penang Bridge and the 24 km (15 mi) Second Penang Bridge. [204] Seberang Perai is accessible through the North-South Expressway , a 966 km-long (600 mi) expressway that stretches along the western part of Peninsular Malaysia .
As a result, island ecosystems comprise 30% of the world’s biodiversity hotspots, 50% of marine tropical diversity, and some of the most unusual and rare species. [2] Many species still remain unknown. The diversity of species on islands is highly impacted by human activities such as deforestation and introduction of the exotic species.
The wild Atlantic salmon fishery is commercially dead; after extensive habitat damage and overfishing, wild fish make up only 0.5% of the Atlantic salmon available in world fish markets. The rest are farmed, predominantly from aquaculture in Norway, Chile, Canada, the UK, Ireland, Faroe Islands, Russia and Tasmania in Australia. Atlantic herring
It can be seen that a larger island close to the mainland has the most species richness and a smaller one far from the mainland has the least. The rate of extinction once a species manages to colonize an island is affected by island size; this is the species-area curve or effect. Larger islands contain larger habitat areas and opportunities for ...
The Theory of Island Biogeography has its roots in Wilson's work on the ants of Melanesia.MacArthur synthesized Wilson's ideas about competition, colonization and equilibrium into a simple graphical representation of immigration and extinction curves, from which one can determine the equilibrial species number on an island. [3]
World map of fish and seafood consumption Historical development of seafood consumption. This list of countries by seafood consumption gives a comprehensive overview that ranks nations worldwide based on their annual seafood consumption per capita. Seafood includes fish and other important marine animals.