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	<title>Yayasan Peduli Konservasi Alam Indonesia - PEKA-INDONESIA.ORG &#187; island</title>
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	<description>Konservasi, Yayasan, Foundation, Indonesia, Indonesia Foundation, Indonesia Conservation Foundation, Konservasi Hutan, Konservasi Alam Indonesia, Pendidikan Lingkungan, Pengembangan Masyarakat, Serangga, Penelitian Serangga, Insect Conservation, Insect Research, PEKA Indonesia Foundation, Peduli Konservasi Alam Indonesia Foundation</description>
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		<title>Spesies Asing Invasif: Akankah Mengubah Wajah Bumi Kita?</title>
		<link>http://www.peka-indonesia.org/research/spesies-asing-invasif-akankah-mengubah-wajah-bumi-kita/</link>
		<comments>http://www.peka-indonesia.org/research/spesies-asing-invasif-akankah-mengubah-wajah-bumi-kita/#comments</comments>
		<pubDate>Wed, 21 Oct 2009 16:17:55 +0000</pubDate>
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		<category><![CDATA[Biodiversity]]></category>
		<category><![CDATA[insect]]></category>
		<category><![CDATA[island]]></category>

		<guid isPermaLink="false">http://www.peka-indonesia.org/?p=471</guid>
		<description><![CDATA[Mungkinkah wajah bumi kita akan berubah karena penyebaran spesies invasif yang begitu cepat dari tempat asalnya ke ke berbagai belahan dunia?.  Pertanyaan ini muncul dalam Konferensi Internasional “Biodiversity Crisis in Tropical Islands” yang diselenggarakan di Brunei Darussalam 11-13 Juni 2007 lalu.   Para Ilmuwan dari berbagai penjuru dunia, termasuk Indonesia hadir pada konferensi ini untuk membicarakan berbagai isu terkait dengan krisis keanekaragaman hayati di wilayah kepulauan tropis.  Salah satu isu hangat yang mengemuka adalah penyebaran spesies asing invasif dari negara asal ke berbagai penjuru dunia yang diperkirakan akan mampu mengubah lansekap permukaan bumi ini.  Perubahan ini sangat dimungkinkan karena masuknya spesies asing yang bersifat invasif ke dalam suatu wilayah yang sama sekali baru akan dapat mempengaruhi keanekaragaman dan struktur komunitas organisme lokal.  Umumnya, spesies seperti ini memiliki sifat mudah beradaptasi dengan lingkungan baru dan mampu berkompetisi dengan spesies lokal di habitat yang sama.  Beberapa contoh yang dapat dengan mudah dilihat adalah tumbuhan enceng gondok (Eichornia crasipes) yang merupakan tumbuhan air yang menginvasi permukaan perairan tawar di berbagai wilayah di Indonesia,  Kirinyu (Cromolaena Odorata), tumbuhan darat yang mampu menginvasi baik di dataran rendah hingga dataran tinggi, dan semut Anoplolepis gracilipes.

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		<item>
		<title>Indonesia and Islands</title>
		<link>http://www.peka-indonesia.org/conservation/indonesia-and-islands/</link>
		<comments>http://www.peka-indonesia.org/conservation/indonesia-and-islands/#comments</comments>
		<pubDate>Mon, 15 Dec 2008 06:27:41 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[conservation]]></category>
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		<category><![CDATA[Global Warming]]></category>
		<category><![CDATA[indonesia]]></category>
		<category><![CDATA[insect]]></category>
		<category><![CDATA[island]]></category>
		<category><![CDATA[wallace]]></category>

		<guid isPermaLink="false">http://peka-indonesia.org/?p=137</guid>
		<description><![CDATA[It is not too much to say that when we have mastered the difficulties presented by the peculiarities of island life we shall find it comparatively easy to deal with the more complex and less clearly defined problems of continental distribution (Wallace, 1902) These words taken from Alfred Russell Wallaces Island Life encapsulate an over-aching idea that could be termed the central paradigm of island biogeography. It is that islands, being discrete, internally quantifiable, numerous, and varied entities, provide us with a suite of natural laboratories, from which the discerning natural scientist can make a selection that simplifies the complexity of the natural world, enabling theories of general importance to be developed and tested (Whittaker, 2007). The scarcity of kinds-the richness in endemic forms in particular classes or section of classes, - the absence of whole group, as of batrachians, and of terrestrial mammals notwithstanding the presence of aerial bats, - the single proportions of certain orders of plants, - herbaceous forms having developed into trees,- seem to me to accord better with the view of occasional means of transport having been largely efficient in the long course of time, than with the view of all our oceanic islands having been formerly connected by contiguous land with the nearest continent (Darwin, 1859).In terms of biodiversity, the issue is clearer: islands boast a truly unique assemblage of life. Species become island dwellers either by drifting on islands, like castaways, as they break off from larger landmasses (in the case of continental islands) or by dispersing across the ocean to islands newly emerged from the ocean floor (oceanic islands). Henceforth they are confined to small, isolated areas located some distance from other large landmasses. Over time, this isolation exerts unique evolutionary forces that result in the development of a distinct genetic reservoir
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