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Plagiomnium Medium
''Plagiomnium medium'', commonly known as Alpine thyme-moss or intermediate plagiomnium moss, is a moss found in montane habitats in the Northern Hemisphere. Research published in 1988 showed that is a hybrid of '' P. ellipticum'' and '' P. insigne'' via an allopolyploid process, previously considered to be absent in bryophyte evolution.Wyatt, Robert ''et al.'' (1988"Allopolyploidy in bryophytes: Multiple origins of Plagiomnium medium"PNAS 85 pp. 5601-04. Retrieved 5 July 2008. In the UK it is classified as near threatened. More than 10% of all UK populations occur in the Cairngorms National Park in Scotland including sites in the Lairig Ghru and on the plateau of Lochnagar Lochnagar or is a mountain in the Mounth, in the Grampians of Scotland. It is about south of the River Dee near Balmoral. It is a popular hill with hillwalkers, and is a noted venue for summer and winter climbing. Names The English nam ....Rothero, Gordon "Bryophytes", in Shaw, Ph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moss
Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (, ) '' sensu stricto''. Bryophyta (''sensu lato'', Schimp. 1879) may also refer to the parent group bryophytes, which comprise liverworts, mosses, and hornworts. Mosses typically form dense green clumps or mats, often in damp or shady locations. The individual plants are usually composed of simple leaves that are generally only one cell thick, attached to a stem that may be branched or unbranched and has only a limited role in conducting water and nutrients. Although some species have conducting tissues, these are generally poorly developed and structurally different from similar tissue found in vascular plants. Mosses do not have seeds and after fertilisation develop sporophytes with unbranched stalks topped with single capsules containing spores. They are typically tall, though some species are much larger. ''Dawsonia'', the tallest moss in the world, can grow to in height. There are a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montane
Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial factor in shaping plant community, biodiversity, metabolic processes and ecosystem dynamics for montane ecosystems. Dense montane forests are common at moderate elevations, due to moderate temperatures and high rainfall. At higher elevations, the climate is harsher, with lower temperatures and higher winds, preventing the growth of trees and causing the plant community to transition to montane grasslands, shrublands or alpine tundra. Due to the unique climate conditions of montane ecosystems, they contain increased numbers of endemic species. Montane ecosystems also exhibit variation in ecosystem services, which include carbon storage and water supply. Life zones As elevation increases, the climate becomes cooler, due to a decrease in a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Hemisphere
The Northern Hemisphere is the half of Earth that is north of the Equator. For other planets in the Solar System, north is defined as being in the same celestial hemisphere relative to the invariable plane of the solar system as Earth's North Pole. Owing to Earth's axial tilt of 23.439281°, winter in the Northern Hemisphere lasts from the December solstice (typically December 21 UTC) to the March equinox (typically March 20 UTC), while summer lasts from the June solstice through to the September equinox (typically on 23 September UTC). The dates vary each year due to the difference between the calendar year and the astronomical year. Within the Northern Hemisphere, oceanic currents can change the weather patterns that affect many factors within the north coast. Such events include El Niño–Southern Oscillation. Trade winds blow from east to west just above the equator. The winds pull surface water with them, creating currents, which flow westward due to the Coriolis e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents (such as in blending inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridisation, which include genetic and morphological differences, differing times of fertility, mating behaviors and cues, and physiological rejection of sperm cells or the developing embryo. Some act before fertilization and others after it. Similar barriers exist in plants, with differences in flowering tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiomnium Ellipticum
''Plagiomnium'' is a genus of mosses in the family Mniaceae. It was formerly a part of a more encompassing genus '' Mnium'' and in 1968 Finish bryologist Timo Juhani Koponen justified splitting the genus into a number of smaller genera. Description This genus is characterized by singly placed marginal teeth. ''Plagiomnium'' are commonlyg found along shaded stream banks, seeps and springs, generally on soil with a high humus content. Species The genus ''Plagiomnium'' contains the following species: *''Plagiomnium acutum'' *'' Plagiomnium affine'' *'' Plagiomnium arbusculum'' *'' Plagiomnium carolinianum'' *'' Plagiomnium ciliare'' *'' Plagiomnium cinclidioides'' *'' Plagiomnium confertidens'' *'' Plagiomnium cordatum'' *'' Plagiomnium cuspidatum'' *'' Plagiomnium drummondii'' *''Plagiomnium ecklonii'' *'' Plagiomnium elatum'' *'' Plagiomnium elimbatum'' *'' Plagiomnium ellipticum'' *''Plagiomnium insigne'' *''Plagiomnium integroradiatum'' *''Plagiomnium in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiomnium Insigne
''Plagiomnium insigne'', the badge moss or coastal leafy moss, is a species of moss found on humus in moist, shaded, lowland forests. It can also be found on soil along trails and other shaded, open areas. The moss sometimes forms lush, extensive mats. Description The plants are large and showy, usually between high. They have wide-spreading, glistening leaves when moist that become shrivelled and dull when dry. The fertile plants are unisexual Dioecy (; ; adj. dioecious , ) is a characteristic of a species, meaning that it has distinct individual organisms (unisexual) that produce male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproducti .... The male plants can be distinguished by their conspicuously flattened heads. The sterile stems are arched, like those of strawberries. Badge moss is the largest mnium. It can be distinguished from magnificent moss by its unisexual plants, leaf edges that extend down the stems for a noti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allopolyploid
Polyploidy is a condition in which the cells of an organism have more than one pair of ( homologous) chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two sets of chromosomes, where each set contains one or more chromosomes and comes from each of two parents, resulting in pairs of homologous chromosomes between sets. However, some organisms are polyploid. Polyploidy is especially common in plants. Most eukaryotes have diploid somatic cells, but produce haploid gametes (eggs and sperm) by meiosis. A monoploid has only one set of chromosomes, and the term is usually only applied to cells or organisms that are normally diploid. Males of bees and other Hymenoptera, for example, are monoploid. Unlike animals, plants and multicellular algae have life cycles with two alternating multicellular generations. The gametophyte generation is haploid, and produces gametes by mitosis, the sporophyte generation is diploid and produces spores by meiosi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Threatened Species
Threatened species are any species (including animals, plants and fungi) which are vulnerable to endangerment in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of ''critical depensation'', a mathematical measure of biomass related to population growth rate. This quantitative metric is one method of evaluating the degree of endangerment. IUCN definition The International Union for Conservation of Nature (IUCN) is the foremost authority on threatened species, and treats threatened species not as a single category, but as a group of three categories, depending on the degree to which they are threatened: *Vulnerable species *Endangered species * Critically endangered species Less-than-threatened categories are near threatened, least concern, and the no longer assigned category of conservation dependent. Species which have not been evaluated (NE), or do not have sufficient data ( data deficient) also are not considered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cairngorms National Park
Cairngorms National Park ( gd, Pàirc Nàiseanta a' Mhonaidh Ruaidh) is a national park in northeast Scotland, established in 2003. It was the second of two national parks established by the Scottish Parliament, after Loch Lomond and The Trossachs National Park, which was set up in 2002. The park covers the Cairngorms range of mountains, and surrounding hills. Already the largest national park in the United Kingdom, in 2010 it was expanded into Perth and Kinross. Roughly 18,000 people reside within the 4,528 square kilometre national park. The largest communities are Aviemore, Ballater, Braemar, Grantown-on-Spey, Kingussie, Newtonmore, and Tomintoul. Tourism makes up about 80% of the economy. In 2018, 1.9 million tourism visits were recorded. The majority of visitors are domestic, with 25 per cent coming from elsewhere in the UK, and 21 per cent being from other countries. Geography The Cairngorms National Park covers an area of in the council areas of Aberdeenshire, Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scotland
Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the north and west, the North Sea to the northeast and east, and the Irish Sea to the south. It also contains more than 790 islands, principally in the archipelagos of the Hebrides and the Northern Isles. Most of the population, including the capital Edinburgh, is concentrated in the Central Belt—the plain between the Scottish Highlands and the Southern Uplands—in the Scottish Lowlands. Scotland is divided into 32 administrative subdivisions or local authorities, known as council areas. Glasgow City is the largest council area in terms of population, with Highland being the largest in terms of area. Limited self-governing power, covering matters such as education, social services and roads and transportation, is devolved from the Scott ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lairig Ghru
The Lairig Ghru ( gd, Làirig Dhrù) is one of the mountain passes through the Cairngorms of Scotland. The route and mountain pass partially lies on the Mar Lodge Estate. Like many traditional routes, the ends of the route through the Lairig Ghru are like the ends of a frayed rope. From the south the Lairig Ghru can be approached from Braemar though Glen Lui, or Glen Dee, and from Blair Atholl through Glen Tilt. From the north the Lairig Ghru can be approached from Glenmore through the Chalamain Gap, and from Aviemore through the Rothiemurchus Forest by way of the ''Crossroads'' above Allt Drùidh. Name Watson gives the place name "Làirig Dhrù", meaning ''pass of Dhru or Druie'', with the local pronunciation "Laarig Groo". He suggests the "probable" derivation as from ''Drùdhadh'' meaning oozing. Any visitor to the summit of the Lairig Ghru would accept that as a possible derivation because two watercourses, one on each side of the summit, appear to "ooze" from the valley ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lochnagar
Lochnagar or is a mountain in the Mounth, in the Grampians of Scotland. It is about south of the River Dee near Balmoral. It is a popular hill with hillwalkers, and is a noted venue for summer and winter climbing. Names The English name refers to a mountain lake in the northeast corrie, , the 'little loch of the noisy sound'. or , 'mountain of breasts' or ' breast-shaped mountain', is probably the original Gaelic name for the mountain. The summit itself is , meaning 'small cairn of faeces' in Gaelic, or less euphemistically, 'little pile of shit'. Peter Drummond, former chairman of the Architectural Heritage Society of Scotland, has also suggested that is a corruption of ('slope'), which would lend a translation of 'little cairn of the slope'. Geography Lochnagar is located on the Royal Estate of Balmoral. Its principal feature is a north-facing corrie, around which most of the subsidiary tops, as well as the main peak, sit. The corrie is the location of many c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
