Jura Canada And Subalpine Mountain Ranges

By Iva Cannon


Situated off the northern coast of Scotland are two clusters of islands, or archipelagos. These are the Inner and Outer Hebrides. Among the inner chain of islands are Mull, Islay, Skye, Coll and Jura, which some people confuse with Jura Canada. Both chains of islands enjoy what has been described as a mild oceanic climate with warm summers, cool winters and no discernible dry season.

Skye, with around 10,000 people, has by far the largest population of the Inner Hebrides. The populations of Mull and Islay are 2,800 and 3,228, respectively. At the other extreme is Rum, which can claim only 22 people living there. Tiree has a population of 653 and Eigg, 83. Much of the coastline is described as a machair, low-lying topography suitable for pastureland.

The economies of the Inner Hebrides are based on small family businesses like fishing, crofting, tourism, and the distilling of whisky, especially on the islands of Jura, Mull, Skye and Islay. A croft is simply a small farm. Many crofters are tenant farmers who pay rent to the landowner, while many others own their farms outright.

As regards the Outer Hebrides, although they are often considered as one island, Harris and Lewis are separate islands connected by a thin isthmus. The population of Lewis and Harris is just over 21,000. There are a total of 15 islands in the Outer Hebrides, of which the four islands with the next largest populations to Lewis and Harris are Barraigh, Barbencula, North Uist, and South Uist. The remaining ten islands have population distributions between 10 and 300.

Livelihoods in the Outer Hebrides are broadly similar to those on the Inner chain, with the addition of weaving. The famous Harris tweed comes from here. All aspects of production are located on the outer archipelago: dying, carding, weaving, warping, blending, finishing and inspecting.

There is a mountain chain called the Juras, but these are situated in Switzerland and France, with some parts extending into Germany. Interestingly, the name is derived from the Celtic word for forest. These mountains are an example of a sub-alpine range, meaning the biotic zone at an immediately lower altitude than the tree line. In Scotland, the tree line is only 1,500 feet. The types of fauna and flora that exist in sub-alpine zones differ depending on their position on the planet.

The Sumatran Montane Rainforest is another example of a sub-alpine forest, only much, much higher up than the Jura Mountains. Here, in Southeast Asia, the tree line goes up to 15,000 feet. Some of the most impressive plant species dwell here, such as Amorphophallus titanum, the stalks of which grow up to two metres. The largest flowering plant in the world is also here, Rafflesia arnoldii, with blossoms a full metre in width.

The Sumatran rainforest harbors interesting animals, too, including three of the most endangered species on the planet: the Sumatran rhinoceros, tiger and rabbit. The geologic history of Sumatra is intriguing. Sumatra, Borneo and Sulawesi were part of the super-continent of Gondwanaland until 150 million years ago, when they split off. For 70 million years, this land mass drifted northward until it collided with India and formed the Himalayas.




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