Ecoregions in the Philippines

In today's world, Ecoregions in the Philippines has become a topic of great relevance and interest to a wide spectrum of people. Both professionally and personally, Ecoregions in the Philippines has generated debates and discussions about its impact and influence on society. From its origin to its current evolution, Ecoregions in the Philippines has been the subject of studies and research that have tried to shed light on its implications and consequences. In this article, we will explore some fundamental aspects of Ecoregions in the Philippines and analyze its role in different contexts. From its connection with technology, through its relationship with culture and politics, to its importance in everyday life, Ecoregions in the Philippines is a topic that continues to generate interest and reflection today.

The Philippine archipelago is one of the world's great reservoirs of biodiversity and endemism. The archipelago includes over 7000 islands, and a total land area of 300,780 km2.

The Philippines was never connected to mainland Asia via land bridges,[dubious – discuss] so the flora and fauna of the islands had to cross ocean straits to reach the Philippines. The Philippines is part of the Indomalayan realm, and its flora and fauna is mostly derived from tropical Asia. Botanically, the Philippines are part of Malesia, a floristic province that includes the Malay Peninsula, Indonesia, and New Guinea. Most of the Malesian flora is derived from tropical Asia, including the dipterocarps, which are the characteristic tree of the Philippine forests. Elements of the Antarctic flora, which originated in the ancient southern hemisphere supercontinent of Gondwana, are also present, including ancient conifers like podocarps (Podocarpus, Nageia, Sundacarpus) and araucarias (Agathis).

The ecoregions of the Philippines are defined primarily by the sea levels during the Ice Ages, which were 120 meters lower than at present, as billions of gallons of water were locked away in huge continental ice sheets. This drop in sea level connected many presently separate islands into larger islands, which allowed for exchanges of flora and fauna:

These formerly-linked islands each constitute a separate ecoregion, as does Mindoro, which remained separate from the rest, along with a few smaller islands, notably Camiguin, Sibuyan, and Siquijor.

Each group of islands that were linked by land bridges in the ice ages also constitutes a separate faunal region. The lack of a land bridge to the Asian continent prevented most of the Asian megafauna, including elephants, rhinoceros, tapirs, tigers, leopards, and gibbons, from reaching the Philippines, although they do inhabit the adjacent Indonesian islands of Sundaland, which were formerly linked to the Asian continent by lowered sea levels.

The other main factor that defines the Philippine ecoregions is elevation; the high mountains of Luzon and Mindanao host distinct montane rain forest ecoregions. The mountains of Luzon are also home to the Luzon tropical pine forests.

Terrestrial ecoregions

by major habitat type[1]
Tropical and subtropical moist broadleaf forests

Tropical and subtropical coniferous forests

Freshwater ecoregions

Source:[2]

  • Northern Philippine Islands
  • Palawan – Busuanga – Mindoro
  • Mindanao
  • Lake Lanao

Marine ecoregions

by marine province[3]

Central Indo-Pacific

See also

References

  1. ^ Wikramanayake, Eric; Eric Dinerstein; Colby J. Loucks; et al. (2002). Terrestrial Ecoregions of the Indo-Pacific: a Conservation Assessment. Washington, DC: Island Press.
  2. ^ Spalding, Mark D., Helen E. Fox, Gerald R. Allen, Nick Davidson et al. "Marine Ecoregions of the World: A Bioregionalization of Coastal and Shelf Areas". Bioscience Vol. 57 No. 7, July/August 2007, pp. 573–583.
  3. ^ Spalding, Mark D., Helen E. Fox, Gerald R. Allen, Nick Davidson et al. "Marine Ecoregions of the World: A Bioregionalization of Coastal and Shelf Areas". Bioscience Vol. 57 No. 7, July/August 2007, pp. 573–583.