What do you mean by wallacea?
Geography. Wallacea is defined as the series of islands stretching between the two continental plates of Sunda and Sahul, but excluding the Philippines. The islands of Wallacea have few land mammals, land birds, or freshwater fish of continental origin, which find it difficult to cross open ocean.
What type of ecosystem is wallacea?
Wallacea water is exceptionally rich in coral species with the main types of coral reefs being fringing reefs and atolls. Compared to other subregions, the Lesser Sundas also have large area of seagrass that covers more than 700,000 hectares.
What is Wallace’s line and what does it represent?
The Wallace and Weber lines are imaginary dividers used to mark the difference between species found in Australia and Papua New Guinea and Southeast Asia. This is especially apparent when considering the difference in mammals between the two regions.
Is Philippines part of wallacea?
Wallacea (Fig. 1) is a biogeographical region separat- ing Asia from Australasia. It and the adjacent areas of Sundaland (Borneo, Java, Sumatra, and Peninsula Malaya) and the Philippines are recognized as inter- nationally important biodiversity hotspots by Conser- vation International (http://www.biodiversityhotspots.
Why is wallacea a hotspot?
Wallacea had such a high rate of endemism due to the formation of a speciation region between the species of Asian and Australian continental shelves, with colonisation events happening from both sides. Wallacea is delimited by a line called Wallace line.
What are the 15 biogeographic zones in the Philippines?
The terrestrial biogeographic regions are as follows: (1) Batanes, (2) Babuyanes, (3) Greater Luzon, (4) Lubang, (5) Greater Mindoro, (6) Greater Palawan, (7) Burias, (8) Sibuyan, (9) Romblon-Tablas, (10) Greater Negros-Panay, (11) Greater Mindanao, (12) Camotes, (13) Siquijor, (14) Camiguin, (15) Greater Sulu, and (16 …
What are the plants in the Philippines?
Philippine Style Garden Plants
- Indian heliotrope.
- Coat Buttons.
- Malabar nightshade.
- Star of Bethlehem.
- Fringed spiderflower.
- Butterfly pea.
- Forest ghost flower.
- Wax hoya.
How many species are there in Philippines?
50,000 species
What are the types and subtypes of ecosystem in the Philippines?
The different types of ecosystems found in the Philippines are the Terrestrial ecosystem, Freshwater ecosystem, Brakish/Esuarine ecosystem, Saltwater/Marine ecosystem. Further, many of these organisms are endemic to the Philippines.
Why is the Philippines a hotspot?
The Philippines is also one of the world’s biodiversity hotspots with at least 700 threatened species, thus making it one of the top global conservation areas. This unique biodiversity is supported by a large variety of ecosystems, landscapes and habitats, most of which are also greatly threatened by human activities.
How do you classify the ecosystem of the Philippines?
Among the natural ecosystems are forest, grassland and coastal zone ecosystems. In the Philippines, the primary forests in the lowlands include mangrove forests, dipterocarp forests and molave forests.
What freshwater ecosystems can be found in the Philippines?
Swamps or marshes are water-logged areas with grassy vegetation. The major freshwater swamps of the Philippines are the Liguasan Marsh (220,000 hal and the Agusan Marsh (89,359 ha) in Mindanao and the Candaba Swamp (32,000 ha) in Central Luzon (IUCN 1990).
What is the percentage of freshwater in the Philippines?
The level of water stress, or freshwater withdrawal as a proportion of available freshwater resources, also increased from 25.5 percent in 2010 to 28.7 percent in 2019 (Figure 7).
What are the main causes of pollution of the bodies of water in the Philippines?
The discharge of domestic and industrial wastewater and agricultural runoff has caused extensive pollution of the receiving water-bodies. This effluent is in the form of raw sewage, detergents, fertilizer, heavy metals, chemical products, oils, and even solid waste.
How clean is the water in the Philippines?
In the Philippines, 91% of the country’s estimated 100.7 million population have access to at least basic water services; but access is highly inequitable across the country, with regional basic water services access ranging from 62% to 100%.
What is the biggest source of pollution in the Philippines?
In the Philippines, coal-fired plants contribute a lion’s share to air pollution in host provinces, while vehicular emissions are the main culprit in the country’s urban centers.
Why does Philippines have a large amount of domestic waste?
The culprits? Corruption, lack of political will – and an addiction to single-use plastic sachets. Masses of plastic trash swirling in waterways, garbage clogging drainage canals and huge stinking dump sites are among the most visible manifestations of the waste crisis in the Philippines.
Does fossil fuel pollute the air?
Burning fossil fuels such as coal and oil produces greenhouse gases that trap solar radiation in the atmosphere and cause climate change. But it also releases tiny poisonous particles known as PM2. 5.