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Ash Archive
The Ash Archive is a project founded in 2019 to restore ash trees to the landscape in England. English ash trees experienced massive dieback beginning in 2012 as a result of a fungal pathogen, ''Hymenoscyphus fraxineus''. The archive contains over 3,000 trees, all of which propagated from the shoots of trees that had demonstrated some resistance to the fungus. The archive was established with £1.9 million (about USD 2.5 million) in government funding, and followed a five-year project to identify ash trees that were resistant to the fungus. One of the final trees in the archive was planted in January 2020 by Nicola Spence, the Chief Plant Health Officer of the UK government. Spence said, "I'm delighted to acknowledge the successes of the Ash Archive project and welcome the International Year of Plant Health by planting an ash dieback-tolerant tree." The Ash Archive trees were planted in the county of Hampshire in an unspecified location by the Future Trees Trust. Propagated sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fraxinus
''Fraxinus'' (), common name, commonly called ash, is a genus of flowering plants in the olive and lilac family, Oleaceae. It contains 45–65 species of usually medium to large trees, mostly deciduous, though a number of Subtropics, subtropical species are evergreen. The genus is widespread across much of Europe, Asia, and North America. The leaf, leaves are opposite leaves, opposite (rarely in Whorl (botany), whorls of three), and mostly pinnate, pinnately compound, though simple in a few species. The seeds, popularly known as "keys" or "helicopter seeds", are a type of fruit known as a samara (fruit), samara. Some ''Fraxinus'' species are Dioecy, dioecious, having male and female flowers on separate plants but sex in ash is expressed as a continuum between male and female individuals, dominated by unisexual trees. With age, ash may change their sexual function from predominantly male and hermaphrodite towards femaleness ; if grown as an ornamental and both sexes are present, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest Dieback
Forest dieback (also "", a German loan word) is a condition in trees or woody plants in which peripheral parts are killed, either by pathogens, parasites or conditions like acid rain, drought, and more. These episodes can have disastrous consequences such as reduced resiliency of the ecosystem, disappearing important symbiotic relationships and thresholds. Some tipping points for major climate change forecast in the next century are directly related to forest diebacks. Definition Forest dieback refers to the phenomenon of a stand of trees losing health and dying without an obvious cause. This condition is also known as forest decline, forest damage, canopy level dieback, and stand level dieback. This usually affects individual species of trees, but can also affect multiple species. Dieback is an episodic event and may take on many locations and shapes. It can be along the perimeter, at specific elevations, or dispersed throughout the forest ecosystem. Forest dieback presents i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hymenoscyphus Fraxineus
''Hymenoscyphus fraxineus'' () is an ascomycete fungus that causes ash dieback, a chronic fungal disease of ash trees in Europe characterised by leaf loss and crown dieback in infected trees. The fungus was first scientifically described in 2006 under the name ''Chalara fraxinea''. Four years later it was discovered that ''Chalara fraxinea'' is the asexual (anamorphic) stage of a fungus that was subsequently named ''Hymenoscyphus pseudoalbidus'' and then renamed as ''Hymenoscyphus fraxineus''. Trees reported dying in Poland in 1992 are now believed to have been infected with this pathogen. It is now widespread in Europe, with up to 85% mortality rates recorded in plantations and 69% in woodlands. It is closely related to a native fungus '' Hymenoscyphus albidus'', which is harmless to European ash trees. According to a 2016 report published in the Journal of Ecology a combination of ''H. fraxineus'' and emerald ash borer attacks could wipe out European ash trees. Genetics The f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shoot (botany)
In botany, a plant shoot consists of any plant stem together with its appendages like, leaves and lateral buds, flowering stems, and flower buds. The new growth from seed germination that grows upward is a shoot where leaves will develop. In the spring, perennial plant shoots are the new growth that grows from the ground in herbaceous plants or the new stem or flower growth that grows on woody plants. In everyday speech, shoots are often synonymous with stems. Stems, which are an integral component of shoots, provide an axis for buds, fruits, and leaves. Young shoots are often eaten by animals because the fibers in the new growth have not yet completed secondary cell wall development, making the young shoots softer and easier to chew and digest. As shoots grow and age, the cells develop secondary cell walls that have a hard and tough structure. Some plants (e.g. bracken) produce toxins that make their shoots inedible or less palatable. File:Cucumber leaf.jpg, The shoot of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicola Spence
Nicola Jane Spence (born 22 February 1961) is the Chief Plant Health Officer and Civil Service (United Kingdom)#Grading schemes, Deputy Director for plant and bee health at the Department for Environment, Food and Rural Affairs. Early life and education Spence was educated at The Mount School, York and Bridlington School. She obtained a BSc in Botany from the University of Durham. Before starting her Master's degree, Masters, Spence volunteered at the Bermuda Marine Biology Research Institute then worked as a tutor for O level and A level students, and was unsure if she wanted to pursure a career in research. Spence undertook a Msc Microbiology from Birkbeck College, which she states 'turned out to be the best decision I made at the start of my career.' Spence then obtained a PhD in Plant Virus, Plant Virology from the University of Birmingham, her thesis was entitled ''The identification, distribution and ecology of bean common mosaic virus in Africa''. In December 2018 Spenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Year Of Plant Health
In December 2018, the United Nations General Assembly adopted a Resolution declaring 2020 as the International Year of Plant Health (IYPH). The purpose of the IYPH was to raise global awareness on how protecting plant health can help end hunger, reduce poverty, protect the environment, and boost economic development. Due to disruption of the planned activities during 2020, some IYPH activities have been continued into the next year, including the declaration by the United States Department of Agriculture's Animal and Plant Health Inspection Service making April 2021 the Invasive Plant Pest and Disease Awareness Month for the US. The European and Mediterranean Plant Protection Organization promoted an original awareness campaign with the mascot Beastie the Bug who travelled to 44 countries despite the travel restrictions associated to covid-19 (https://beastiebug.eppo.int/) The IYPH extended schedule lasted through July 2021 and greatly increased the news media coverage and number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hampshire
Hampshire (, ; abbreviated to Hants) is a ceremonial county, ceremonial and non-metropolitan county, non-metropolitan counties of England, county in western South East England on the coast of the English Channel. Home to two major English cities on its south coast, Southampton and Portsmouth, Hampshire is the 9th-most populous county in England. The county town of Hampshire is Winchester, located in the north of the county. The county is bordered by Dorset to the south-west, Wiltshire to the north-west, Berkshire to the north, Surrey to the north-east, and West Sussex to the south east. The county is geographically diverse, with upland rising to and mostly south-flowing rivers. There are areas of downland and marsh, and two national parks: the New Forest National Park, New Forest and part of the South Downs National Park, South Downs, which together cover 45 per cent of Hampshire. Settled about 14,000 years ago, Hampshire's recorded history dates to Roman Britain, when its chi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Future Trees Trust
The Future Trees Trust is a charity that aims to improve and increase the stock of hardwood trees in Britain and Ireland. History The British and Irish Hardwoods Improvement Programme (BIHIP) was established in 1991 with the aim of improving and increasing the stock of hardwood trees in Britain and Ireland. It was renamed the Future Trees Trust in 2008. The Future Trees Trust is a registered charity in England and Wales, and Ireland. It is supported by a network of organisations, and has six species groups that lead research on: ash, birch, cherry, oak, sycamore, and walnut. In 2019 and 2020, it helped plant 3,000 ash trees in England to establish the Ash Archive. The archive consists of trees that have demonstrated resistance to the fungal pathogen ''Hymenoscyphus fraxineus ''Hymenoscyphus fraxineus'' () is an ascomycete fungus that causes ash dieback, a chronic fungal disease of ash trees in Europe characterised by leaf loss and crown dieback in infected trees. The fung ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Anglia
East Anglia is an area in the East of England, often defined as including the counties of Norfolk, Suffolk and Cambridgeshire. The name derives from the Anglo-Saxon kingdom of the East Angles, a people whose name originated in Anglia, in what is now Northern Germany. Area Definitions of what constitutes East Anglia vary. The Anglo-Saxon Kingdom of East Anglia, established in the 6th century, originally consisted of the modern counties of Norfolk and Suffolk and expanded west into at least part of Cambridgeshire, typically the northernmost parts known as The Fens. The modern NUTS 3 statistical unit of East Anglia comprises Norfolk, Suffolk and Cambridgeshire (including the City of Peterborough unitary authority). Those three counties have formed the Roman Catholic Diocese of East Anglia since 1976, and were the subject of a possible government devolution package in 2016. Essex has sometimes been included in definitions of East Anglia, including by the London Society o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Environmental Mitigation
Environmental mitigation, compensatory mitigation, or mitigation banking, are terms used primarily by the United States government and the related environmental industry to describe projects or programs intended to offset known impacts to an existing historic or natural resource such as a stream, wetland, endangered species, archeological site, paleontological site or historic structure. To "mitigate" means to make less harsh or hostile. Environmental mitigation is typically a part of an environmental crediting system established by governing bodies which involves allocating debits and credits. Debits occur in situations where a natural resource has been destroyed or severely impaired and credits are given in situations where a natural resource has been deemed to be improved or preserved. Therefore, when an entity such as a business or individual has a "debit" they are required to purchase a "credit". In some cases credits are bought from "mitigation banks" which are large mitigati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
