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Rumex Rupestris
''Rumex rupestris'', commonly known as shore dock, is a species of flowering plant belonging to the family Polygonaceae. Its native range is Western Europeand is one of the world's rarest dock species.Lousley JE, Kent DH. 1981. ''Docks and Knotweeds of the British Isles''. BSBI Handbook No. 3. BSBI, London. Description ''R. rupestris'' is a coarse stout woody perennial measuring 30 – 50 cm (sometimes up to 70 cm) in height, with one or two shoots arising from the stock. The thick, dull bluish green leathery basal leaves are 10 – 30 cm long with entire, undulate leaf margins. They are oblong or broadly ovate-lanceolate shaped, narrowing rather abruptly to a truncate or subcordate base. The petiole is less than one third the length of the leaf blade. The stem leaves are oblong-lanceolate that gradually narrow to the base, with an acute leaf tip at the leaf end. The leaf margin is undulate, crenulate and subsessile. The inflorescence comprises a dense panicle with ascending br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flowering Plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. They include all forbs (flowering plants without a woody stem), grasses and grass-like plants, a vast majority of broad-leaved trees, shrubs and vines, and most aquatic plants. The term "angiosperm" is derived from the Greek words ἀγγεῖον / ('container, vessel') and σπέρμα / ('seed'), meaning that the seeds are enclosed within a fruit. They are by far the most diverse group of land plants with 64 orders, 416 families, approximately 13,000 known genera and 300,000 known species. Angiosperms were formerly called Magnoliophyta (). Angiosperms are distinguished from the other seed-producing plants, the gymnosperms, by having flowers, xylem consisting of vessel elements instead of tracheids, endosperm within their seeds, and fruits that completely envelop the seeds. The ancestors of flowering plants diverged from the common ance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metapopulations
A metapopulation consists of a group of spatially separated populations of the same species which interact at some level. The term metapopulation was coined by Richard Levins in 1969 to describe a model of population dynamics of insect pests in agricultural fields, but the idea has been most broadly applied to species in naturally or artificially habitat fragmentation, fragmented habitats. In Levins' own words, it consists of "a population of populations". A metapopulation is generally considered to consist of several distinct populations together with areas of suitable habitat which are currently unoccupied. In classical metapopulation theory, each population cycles in relative independence of the other populations and eventually goes extinct as a consequence of demographic stochasticity (fluctuations in population size due to random demographic events); the smaller the population, the more chances of inbreeding depression and prone to extinction. Although individual populations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bern Convention On The Conservation Of European Wildlife And Natural Habitats
The Bern Convention on the Conservation of European Wildlife and Natural Habitats, also known as the Bern Convention (or Berne Convention), is a binding international legal instrument in the field of Nature Conservation, it covers the natural heritage in Europe, as well as in some African countries. The Convention was open for signature on 19 September 1979 and came into force on 1 June 1982. It is particularly concerned about protecting natural habitats and endangered species, including migratory species. Aims and objectives The convention has three main aims, which are stated in Article 1:Council of Europe, 1979. Convention on the Conservation of European Wildlife and Natural Heritage. Bern, Switzerland. Available at: http://conventions.coe.int/Treaty/EN/Treaties/Html/104.htm * to conserve wild flora and fauna and their natural habitats * to promote cooperation between states * to give particular attention to endangered and vulnerable species including endangered and vulne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitats Directive
The Habitats Directive (more formally known as Council Directive 92/43/EEC on the Conservation of natural habitats and of wild fauna and flora) is a directive adopted by the European Community in 1992 as a response to the Berne Convention. The European Community was reformed as the European Union the following year, but the directive is still recognised. The Habitats Directive required national governments to specify areas that are expected to be ensuring the conservation of flora and fauna species. This led to the setting up of a network of protected areas across the EU, along with 'Special Areas of Conservation', which together with the existing Special Protection Areas, became the so-called Natura 2000 network established to protect species and habitats. This directive is one of the main pillars of the European Union's system of wildlife and nature conservation, another being the Birds Directive. The Habitats Directive, together with the Birds Directive, are also called the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wildlife And Countryside Act 1981
The Wildlife and Countryside Act 1981 is an Act of Parliament in the United Kingdom implemented to comply with European Council Directive 79/409/EEC on the conservation of wild birds. In short, the act gives protection to native species (especially those at threat), controls the release of non-native species, enhances the protection of Sites of Special Scientific Interest and builds upon the rights of way rules in the National Parks and Access to the Countryside Act 1949. The Act is split into 4 parts covering 74 sections; it also includes 17 schedules. The legislation has strength; few amendments have been made to it, and it has acted as a foundation for later legislation to build upon. The compulsory 5 year review of schedules 5 and 8 make it dynamic in terms of the species which it protects. History Wild Birds Protection Act 1902 The Wild Birds Protection Act 1902 ( 2 Edw 7 c. 6) was an Act of Parliament of the Parliament of the United Kingdom, given the royal assent on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Red Data Book
A Regional Red List is a report of the threatened status of species within a certain country or region. It is based on the IUCN Red List of Threatened Species, an inventory of the conservation status of species on a global scale. Regional Red Lists assess the risk of extinction to species within a political management unit and therefore may feed directly into national and regional planning. This project is coordinated by the Zoological Society of London, the World Conservation Union (IUCN) and partners in national governments, universities and organizations throughout the world. Regional Red Lists may assist countries or regions in: * Determining the conservation status and trends of species * Identifying species or ecosystems under greatest threat * Informing conservation planning and priority setting * Raising awareness of threatened species Assessing extinction risk on a regional scale The IUCN Categories and Criteria were initially designed to assess the conservation s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agrochemical
An agrochemical or agrichemical, a contraction of ''agricultural chemical'', is a chemical product used in industrial agriculture. Agrichemical refers to biocides (pesticides including insecticides, herbicides, fungicides and nematicides) and synthetic fertilizers. It may also include hormones and other chemical growth agents. Agrochemicals are counted among speciality chemicals. Categories Biological action In most of the cases, agrochemicals refer to pesticides. *Pesticides ** Insecticides ** Herbicides ** Fungicides ** Algaecides ** Rodenticides ** Molluscicides ** Nematicides * Fertilisers * Soil conditioners * Liming and acidifying agents *Plant growth regulators Application method * Fumigants * Penetrant Ecology Many agrochemicals are toxic, and agrichemicals in bulk storage may pose significant environmental and/or health risks, particularly in the event of accidental spills. In many countries, use of agrichemicals is highly regulated. Government-issued permi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecological Succession
Ecology () is the study of the relationships between living organisms, including humans, and their physical environment. Ecology considers organisms at the individual, population, community, ecosystem, and biosphere level. Ecology overlaps with the closely related sciences of biogeography, evolutionary biology, genetics, ethology, and natural history. Ecology is a branch of biology, and it is not synonymous with environmentalism. Among other things, ecology is the study of: * The abundance, biomass, and distribution of organisms in the context of the environment * Life processes, antifragility, interactions, and adaptations * The movement of materials and energy through living communities * The successional development of ecosystems * Cooperation, competition, and predation within and between species * Patterns of biodiversity and its effect on ecosystem processes Ecology has practical applications in conservation biology, wetland management, natural resource management ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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