Sunday, February 13, 2011

Ecosystems in Hong Kong!!

Posted by gmygotravel

Mangroves are habitats of enclosed intertidal mud flats with wave action greatly reduced, located near sources of fresh water. Popular mangrove habitats in Hong Kong are located along Deep Bay, such as Pak Nai and Tsim Bei Tsui, where salinity is very low under the influence of fresh water from the Pearl River, and along some mud flats where salinity is lowered by surrounding streams, such as Three Fathoms Cove and Ting Kok. Trees living in this habitat are called mangrove trees.

The following are the sites of Mangroves in Hong Kong:
-          Deep Bay
-          Tolo Harbour
-          Hoi Ha Wan
-          Long Harbour
-          Hebe Haven
-          Tai O
-          Tung Chung
-          Tai Tam Harbour
-          Pui O

Rocky Shores, The tidal range of Hong Kong is about 2.5 meters and the distribution of species is situated into this area must be tolerant of both conditions that the shores are covered with sea water during high tide and the shores are exposed to the air directly during low tide, for hours or days. Species which have adapted to these different conditions are described as specialized to successfully exploit narrow vertical zones on the rocky shore.

The species inhabiting Hong Kong rocky shores varies in accordance with the exposure to the wave action from the sea. The sessile filter feeding organisms inhabit the wave exposed shores. They are able to attach on the rock surface and remove food particles in the turbulent water while the mobile herbivores and carnivores inhabit in the sheltered shores. The varieties of the organisms also different from seasons, especially in Hong Kong where oceanic currents change with season: very few erect foliose macro-algae are found in summer because they may suffer from the burning heat; a lot of foliose algae are found on the shores in winter.

The following are the sites of rocky shores in Hong Kong:
-          Luk Keng
-          Kei Ling Ha Lo Wai
-          Cape D'Aguilar Marine Reserve

Streams, There are two kinds of freshwater habitats: lentic water, such as lakes, ponds, ditches, and lotic water, such as rivers, streams. Streams are an example of a lotic habitat Hong Kong.
There are three main factors to differentiate the habitats in Hong Kong: variability of current, amount of detritus and variable oxygen content. These factors contribute to make the animals adapted in different ways. They have to attach themselves to the surfaces, become predominantly detritus feeders and have a mechanism for obtaining maximum oxygen supply.

The followings are the sites of streams in Hong Kong:
-          Wa Mei Shan
-          Lam Tsuen River

Sandy Shores
The following are the site of sandy shores in Hong Kong:
-          Starfish Bay

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