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Johora Singaporensis
''Johora singaporensis'', the ''Singapore stream crab'' or ''Singapore freshwater crab'', is a critically endangered species of freshwater crab endemic to Singapore. It grows to a size of wide. Ecology ''J. singaporensis'' lives in streams running through undisturbed forest, where it hides under rocks at the stream's edge, or inside aggregations of leaves and detritus. It is mostly nocturnal, feeding on detritus and oligochaete worms which live in the muddy stream bed. Distribution ''J. singaporensis'' only lives in Singapore, and has only ever been recorded from two locations. One of these was inside Bukit Timah Nature Reserve, but that population is believed to have been extirpated, as recent surveys have failed to find any examples there. The second population is outside the nature reserve at Bukit Batok, partly on private land, and partly on military land. Acidification of the first stream may have caused the first population to die out, while a lowering of the water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raffles Bulletin Of Zoology
''The Raffles Bulletin of Zoology'' is a peer-reviewed open-access scientific journal published by the Lee Kong Chian Natural History Museum at the National University of Singapore. It covers the taxonomy, ecology, and conservation of Southeast Asian fauna.Supplements are published as and when funding permits and may cover topics that extend beyond the normal scope of the journal depending on the targets of the funding agency. It was established as the ''Bulletin of the Raffles Museum'' in 1928 and renamed ''Bulletin of the National Museum of Singapore'' in 1961, before obtaining its current title in 1971. See also * List of zoology journals This is a list of scientific journals which cover the field of zoology. A * '' Acta Entomologica Musei Nationalis Pragae'' * '' Acta Zoologica Academiae Scientiarum Hungaricae'' * '' Acta Zoologica Bulgarica'' * ''Acta Zoologica Mexicana'' * '' ... References Zoology journals Biannual journals Open access journals English-language ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Level
Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth's coastal bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardised geodetic datumthat is used, for example, as a chart datum in cartography and marine navigation, or, in aviation, as the standard sea level at which atmospheric pressure is measured to calibrate altitude and, consequently, aircraft flight levels. A common and relatively straightforward mean sea-level standard is instead the midpoint between a mean low and mean high tide at a particular location. Sea levels can be affected by many factors and are known to have varied greatly over geological time scales. Current sea level rise is mainly caused by human-induced climate change. When temperatures rise, Glacier, mountain glaciers and the Ice sheet, polar ice caps melt, increasing the amount of water in water bodies. Because most of human settlem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johora Intermedia
''Johora'' is a genus of freshwater crabs found in the Malay Peninsula and surrounding islands. It includes the following species: *''Johora aipooae'' (Ng, 1986) *''Johora counsilmani'' (Ng, 1985) *'' Johora gapensis'' (Bott, 1966) *'' Johora grallator'' Ng, 1988 *'' Johora gua'' Yeo, 2001 *'' Johora hoiseni'' Ng & Takeda, 1992 *'' Johora intermedia'' (Ng, 1986) *''Johora johorensis'' (Roux, 1936) *''Johora murphyi'' (Ng, 1986) *''Johora punicea'' (Ng, 1985) *'' Johora singaporensis'' (Ng, 1986) *''Johora tahanensis'' (Bott, 1966) *'' Johora thaiana'' Leelawathanagoon, Lheknim & Ng, 2005 *''Johora thoi'' Ng, 1990 *''Johora tiomanensis'' (Ng & L. W. H. Tan, 1984) Four of the species are listed as vulnerable species by the International Union for Conservation of Nature, one is Near Threatened, one is Data Deficient A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johora Gapensis
''Johora'' is a genus of freshwater crabs found in the Malay Peninsula and surrounding islands. It includes the following species: *''Johora aipooae'' (Ng, 1986) *''Johora counsilmani'' (Ng, 1985) *'' Johora gapensis'' (Bott, 1966) *''Johora grallator'' Ng, 1988 *''Johora gua'' Yeo, 2001 *''Johora hoiseni'' Ng & Takeda, 1992 *''Johora intermedia'' (Ng, 1986) *''Johora johorensis'' (Roux, 1936) *''Johora murphyi'' (Ng, 1986) *''Johora punicea'' (Ng, 1985) *'' Johora singaporensis'' (Ng, 1986) *''Johora tahanensis'' (Bott, 1966) *''Johora thaiana'' Leelawathanagoon, Lheknim & Ng, 2005 *''Johora thoi'' Ng, 1990 *''Johora tiomanensis'' (Ng & L. W. H. Tan, 1984) Four of the species are listed as vulnerable species by the International Union for Conservation of Nature, one is Near Threatened, one is Data Deficient A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johora Johorensis
''Johora'' is a genus of freshwater crabs found in the Malay Peninsula and surrounding islands. It includes the following species: *''Johora aipooae'' (Ng, 1986) *''Johora counsilmani'' (Ng, 1985) *'' Johora gapensis'' (Bott, 1966) *'' Johora grallator'' Ng, 1988 *'' Johora gua'' Yeo, 2001 *'' Johora hoiseni'' Ng & Takeda, 1992 *'' Johora intermedia'' (Ng, 1986) *'' Johora johorensis'' (Roux, 1936) *''Johora murphyi'' (Ng, 1986) *''Johora punicea'' (Ng, 1985) *'' Johora singaporensis'' (Ng, 1986) *''Johora tahanensis'' (Bott, 1966) *'' Johora thaiana'' Leelawathanagoon, Lheknim & Ng, 2005 *''Johora thoi'' Ng, 1990 *''Johora tiomanensis'' (Ng & L. W. H. Tan, 1984) Four of the species are listed as vulnerable species by the International Union for Conservation of Nature, one is Near Threatened, one is Data Deficient A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient informatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johora Murphyi
''Johora'' is a genus of freshwater crabs found in the Malay Peninsula and surrounding islands. It includes the following species: *''Johora aipooae'' (Ng, 1986) *''Johora counsilmani'' (Ng, 1985) *'' Johora gapensis'' (Bott, 1966) *'' Johora grallator'' Ng, 1988 *'' Johora gua'' Yeo, 2001 *'' Johora hoiseni'' Ng & Takeda, 1992 *'' Johora intermedia'' (Ng, 1986) *'' Johora johorensis'' (Roux, 1936) *'' Johora murphyi'' (Ng, 1986) *''Johora punicea'' (Ng, 1985) *'' Johora singaporensis'' (Ng, 1986) *''Johora tahanensis'' (Bott, 1966) *'' Johora thaiana'' Leelawathanagoon, Lheknim & Ng, 2005 *''Johora thoi'' Ng, 1990 *''Johora tiomanensis'' (Ng & L. W. H. Tan, 1984) Four of the species are listed as vulnerable species by the International Union for Conservation of Nature, one is Near Threatened, one is Data Deficient A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient informati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johora Counsilmani
''Johora'' is a genus of freshwater crabs found in the Malay Peninsula and surrounding islands. It includes the following species: *'' Johora aipooae'' (Ng, 1986) *'' Johora counsilmani'' (Ng, 1985) *'' Johora gapensis'' (Bott, 1966) *'' Johora grallator'' Ng, 1988 *'' Johora gua'' Yeo, 2001 *'' Johora hoiseni'' Ng & Takeda, 1992 *'' Johora intermedia'' (Ng, 1986) *'' Johora johorensis'' (Roux, 1936) *'' Johora murphyi'' (Ng, 1986) *'' Johora punicea'' (Ng, 1985) *'' Johora singaporensis'' (Ng, 1986) *'' Johora tahanensis'' (Bott, 1966) *'' Johora thaiana'' Leelawathanagoon, Lheknim & Ng, 2005 *'' Johora thoi'' Ng, 1990 *'' Johora tiomanensis'' (Ng & L. W. H. Tan, 1984) Four of the species are listed as vulnerable species by the International Union for Conservation of Nature, one is Near Threatened, one is Data Deficient A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient inf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johora Tiomanensis
''Johora'' is a genus of freshwater crabs found in the Malay Peninsula and surrounding islands. It includes the following species: *''Johora aipooae'' (Ng, 1986) *''Johora counsilmani'' (Ng, 1985) *'' Johora gapensis'' (Bott, 1966) *'' Johora grallator'' Ng, 1988 *'' Johora gua'' Yeo, 2001 *'' Johora hoiseni'' Ng & Takeda, 1992 *'' Johora intermedia'' (Ng, 1986) *'' Johora johorensis'' (Roux, 1936) *'' Johora murphyi'' (Ng, 1986) *'' Johora punicea'' (Ng, 1985) *'' Johora singaporensis'' (Ng, 1986) *'' Johora tahanensis'' (Bott, 1966) *'' Johora thaiana'' Leelawathanagoon, Lheknim & Ng, 2005 *'' Johora thoi'' Ng, 1990 *'' Johora tiomanensis'' (Ng & L. W. H. Tan, 1984) Four of the species are listed as vulnerable species by the International Union for Conservation of Nature, one is Near Threatened, one is Data Deficient A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient infor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, the equivalent Latin term ''cladus'' (plural ''cladi'') is often used in taxonomical literature. The common ancestor may be an individual, a population, or a species (extinct or extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed monophyletic (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming taxa that are not clades; that is, taxa that are not monophyletic. Some of the relationships between organisms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sister Group
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and taxon B are sister groups to each other. Taxa A and B, together with any other extant or extinct descendants of their most recent common ancestor (MRCA), form a monophyletic group, the clade AB. Clade AB and taxon C are also sister groups. Taxa A, B, and C, together with all other descendants of their MRCA form the clade ABC. The whole clade ABC is itself a subtree of a larger tree which offers yet more sister group relationships, both among the leaves and among larger, more deeply rooted clades. The tree structure shown connects through its root to the rest of the universal tree of life. In cladistic standards, taxa A, B, and C may represent specimens, species, genera, or any other taxonomic units. If A and B are at the same taxonomic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoologica Scripta
''Zoologica Scripta'' is a bimonthly peer-reviewed scientific journal on systematic zoology, published by Wiley-Blackwell on behalf of the Norwegian Academy of Science and Letters and the Royal Swedish Academy of Sciences. It was established in 1972. The current chief editor is Per Sundberg. According to the ''Journal Citation Reports'', the journal has a 2020 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as i ... of 3.140, ranking it 12th out of 174 journals in the category "Zoology". See also * '' Arkiv för Zoologi'' References External links * * Zoology journals Royal Swedish Academy of Sciences Publications established in 1972 Bimonthly journals Wiley-Blackwell academic journals Academic journals associated with learned and professional societies [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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