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Marine Lake
A marine lake is a lake situated very close to the sea, which has a connection to this sea, via tunnels or cracks in the soil. Marine lakes are fed with seawater but are usually also fed with rainwater, meaning that the salt content of the water is usually lower. The measure of salt greatly depends on the size of the tunnel or crack connecting it to the sea. Due to the specific level of salt in the water, and the fact that the lakes are so secluded, marine lakes house a large amount of unique species, often found nowhere else on the planet. Destruction of one such lake means that many species can become extinct with it. Lakes around the world There are about 200 known marine lakes. Most of these are located in Vietnam, Palau, and Indonesia. A notable marine lake is Ongeim’l Tketau, in Palau, known for its vast numbers of jellyfish, to which it owes its nickname, Jellyfish Lake. Threats Marine lakes are vulnerable to threats from human activities and climate change. Common thre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hutt Lagoon, Western Australia
Hutt can refer to: Places New Zealand * Hutt River (New Zealand), name after William Hutt (politician). ** Hutt Valley, an area inland from Wellington ** Hutt County, a former county in the Hutt Valley ** Lower Hutt ('Hutt City'), a territorial authority (formerly part of Hutt County) ** Upper Hutt ('Upper Hutt City'), a territorial authority (formerly part of Hutt County) ** Hutt (New Zealand electorate), a former electorate, 1983-1956 * Mount Hutt Mount Hutt () rises to the west of the Canterbury Plains in the South Island of New Zealand, above the braided upper reaches of the Rakaia River, and 80 kilometres west of Christchurch. Its summit is 2190 metres above sea level. The New Zeala ..., a mountain and ski field in the Southern Aps Australia * Hutt River (South Australia) * Hutt River (Western Australia) * Hutt Lagoon, Western Australia * Hutt Street, Adelaide, South Australia Antarctica * Hutt Peak, Marie Byrd Land Other uses * Hutt (surname) * Hutt (''Star ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake
A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from the ocean, although they may be connected with the ocean by rivers. Lakes, as with other bodies of water, are part of the water cycle, the processes by which water moves around the Earth. Most lakes are fresh water and account for almost all the world's surface freshwater, but some are salt lakes with salinities even higher than that of seawater. Lakes vary significantly in surface area and volume of water. Lakes are typically larger and deeper than ponds, which are also water-filled basins on land, although there are no official definitions or scientific criteria distinguishing the two. Lakes are also distinct from lagoons, which are generally shallow tidal pools dammed by sandbars or other material at coastal regions of ocean ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vietnam
Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and dependencies by population, fifteenth-most populous country. One of two communist states in Southeast Asia, Vietnam shares land borders with China to the north, and Laos and Cambodia to the west. It shares Maritime boundary, maritime borders with Thailand through the Gulf of Thailand, and the Philippines, Indonesia, and Malaysia through the South China Sea. Its capital is Hanoi and its largest city is Ho Chi Minh City. Vietnam was inhabited by the Paleolithic age, with states established in the first millennium BC on the Red River Delta in modern-day northern Vietnam. Before the Han dynasty's invasion, Vietnam was marked by a vibrant mix of religion, culture, and social norms. The Han dynasty annexed Northern and Central Vietnam, which were subs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palau
Palau, officially the Republic of Palau, is an island country in the Micronesia subregion of Oceania in the western Pacific Ocean. The Republic of Palau consists of approximately 340 islands and is the western part of the Caroline Islands, while the eastern and central parts make up the Federated States of Micronesia. It has a total area of , making it the sixteenth smallest country in the world. The most populous island is Koror, home to the country's most populous city of the same name. The capital, Ngerulmud, is located on the largest island of Babeldaob, in Melekeok State. Palau shares maritime boundaries with international waters to the north, the Federated States of Micronesia to the east, Indonesia to the south, and the Philippines to the northwest. The country was originally settled approximately 3,000 years BP by migrants from Maritime Southeast Asia. Palau was first drawn on a European map by the Bohemian missionary Paul Klein based on a description g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guinea, Indonesia is the world's largest archipelagic state and the List of countries and dependencies by area, 14th-largest country by area, at . With over 280 million people, Indonesia is the world's List of countries and dependencies by population, fourth-most-populous country and the most populous Islam by country, Muslim-majority country. Java, the world's List of islands by population, most populous island, is home to more than half of the country's population. Indonesia operates as a Presidential system, presidential republic with an elected People's Consultative Assembly, legislature and consists of Provinces of Indonesia, 38 provinces, nine of which have Autonomous administrative divisi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jellyfish Lake
Jellyfish Lake () is a marine lake located on Eil Malk island in Palau. Eil Malk is a part of the Rock Islands, a group of small, rocky, mostly uninhabited islands in Palau's Southern Lagoon, between Koror and Peleliu. There are about 70 other marine lakes located throughout the Rock Islands. Millions of golden jellyfish migrate horizontally across the lake daily. Jellyfish Lake is connected to the ocean through fissures and tunnels in the limestone of an ancient Miocene reef. However, the lake is sufficiently isolated and the conditions are different enough that the Biodiversity, diversity of species in the lake is greatly reduced from the nearby lagoon. The golden jellyfish, ''Mastigias papua etpisoni'', and possibly other species in the lake, have evolved to be substantially different from their close relatives living in the nearby lagoons. Lake stratification Jellyfish Lake is Lake stratification, stratified into two layers, an Oxygenation (environmental), oxygenated upper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jellyfish
Jellyfish, also known as sea jellies or simply jellies, are the #Life cycle, medusa-phase of certain gelatinous members of the subphylum Medusozoa, which is a major part of the phylum Cnidaria. Jellyfish are mainly free-swimming marine animals, although a few are anchored to the seabed by stalks rather than being motile. They are made of an umbrella-shaped main body made of mesoglea, known as the ''bell'', and a collection of trailing tentacles on the underside. Via pulsating contractions, the bell can provide propulsion for animal locomotion, locomotion through open water. The tentacles are armed with cnidocyte, stinging cells and may be used to capture prey or to defend against predators. Jellyfish have a complex biological life cycle, life cycle, and the medusa is normally the sexual phase, which produces planula larvae. These then disperse widely and enter a sedentary #Life cycle, polyp phase which may include asexual budding before reaching sexual maturity. Jellyfish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Climate Change
Present-day climate change includes both global warming—the ongoing increase in Global surface temperature, global average temperature—and its wider effects on Earth's climate system. Climate variability and change, Climate change in a broader sense also includes previous long-term changes to Earth's climate. The current rise in global temperatures is Scientific consensus on climate change, driven by human activities, especially fossil fuel burning since the Industrial Revolution. Fossil fuel use, Deforestation and climate change, deforestation, and some Greenhouse gas emissions from agriculture, agricultural and Environmental impact of concrete, industrial practices release greenhouse gases. These gases greenhouse effect, absorb some of the heat that the Earth Thermal radiation, radiates after it warms from sunlight, warming the lower atmosphere. Carbon dioxide, the primary gas driving global warming, Carbon dioxide in Earth's atmosphere, has increased in concentratio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biodiversity Hotspot
A biodiversity hotspot is a ecoregion, biogeographic region with significant levels of biodiversity that is threatened by human habitation. Norman Myers wrote about the concept in two articles in ''The Environmentalist'' in 1988 and 1990, after which the concept was revised following thorough analysis by Myers and others into "Hotspots: Earth's Biologically Richest and Most Endangered Terrestrial Ecoregions" and a paper published in the journal ''Nature'', both in 2000. To qualify as a biodiversity hotspot on Myers' 2000 edition of the hotspot map, a region must meet two strict criteria: it must contain at least 1,500 species of vascular plants (more than 0.5% of the world's total) as Endemism, endemics, and it has to have lost at least 70% of its primary vegetation. Globally, 36 zones qualify under this definition. These sites support nearly 60% of the world's plant, bird, mammal, reptile, and amphibian species, with a high share of those species as endemics. Some of these hots ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
