• In biology, a species is the basic unit of biological classification and a taxonomic rank, as well as a unit of biodiversity, but it has proven difficult to find a satisfactory definition. (wikipedia.org)
  • As a practical matter, species concepts may be used to define species that are then used to measure biodiversity, though whether this is a good measure is disputed, as other measures are possible. (wikipedia.org)
  • Invasive alien species are a major driver of biodiversity loss. (iucn.org)
  • U.S. Department of the Interior, State agencies and others use the results of our work to better understand species' response to environmental change, inform conservation and management needs, and conserve biodiversity and ecosystem function across our landscapes. (usgs.gov)
  • Invasive vertebrate species cause substantial damage to crops and livestock, property, and natural resources (including threatened and endangered species, biodiversity, and ecosystem health), and pose a disease hazard to humans and livestock. (usda.gov)
  • Biologists have long known that insects make up the vast bulk of the planet's biodiversity -- a previous estimate held that there were up to 30 million different insect species in the rainforest alone. (treehugger.com)
  • Britain is already home to around 2000 introduced species which have increased biodiversity while causing few, if any, major problems. (newscientist.com)
  • Here we investigate the effect of barriers on biodiversity by simulating the expansion of a population around a barrier to form a ring species, in which the two ends of the population are reproductively isolated despite ongoing gene flow around the ring. (pnas.org)
  • First, the manifest empirical importance of selection in the traits of species appears to be counter to the ability to describe biodiversity by using neutral models of speciation ( 1 ⇓ ⇓ - 4 ). (pnas.org)
  • The IUCN Red List is critical as an indicator of the health of biodiversity, in identifying conservation needs and informing necessary changes in policy and legislation to drive conservation forward, says Jean-Christophe Vi , Deputy Director of IUCN s Global Species Programme. (care2.com)
  • How is climate change affecting food networks and other species interactions, and what are the implications for biodiversity? (europa.eu)
  • Species diversity is often equated with biodiversity, as it is the most obvious form of biodiversity and easier to study than genetic diversity or habitat diversity. (wsl.ch)
  • The ETH Board is strengthening the biodiversity research of WSL and Eawag in order to find answers to the challenges of species loss as quickly as possible. (wsl.ch)
  • The first part of a binomial is the genus to which the species belongs. (wikipedia.org)
  • For example, Boa constrictor is one of four species of the Boa genus. (wikipedia.org)
  • The butterfly genus Heliconius contains some species extremely difficult to tell apart. (wikipedia.org)
  • Euonymus , genus of about 130 species of shrubs, woody climbers, and small trees, in the staff tree family ( Celastraceae ), native to temperate Asia, North America , and Europe. (britannica.com)
  • Within the genus Tarsius , formerly regarded as a single species, Tarsius spectrum , we recognize 8 allopatric and parapatric species, 9 if the inclusion of pumilus is warranted, and note that more are likely to be described in the near future. (springer.com)
  • The genus Patersonia includes about twenty species of small strap-leaf plants resembling the exotic iris whose family, Iridaceae, is not well represented in Australia. (anbg.gov.au)
  • Scientists and conservationists need a species definition which allows them to work, regardless of the theoretical difficulties. (wikipedia.org)
  • There is a need to develop methods and strategies for invasive vertebrate species so that scientists can (1) assess the risks of an introduction occurring, (2) detect and monitor populations, (3) manage or eliminate populations, (4) mitigate the adverse effects where invasive species cannot be effectively controlled, and (5) prevent future introductions. (usda.gov)
  • NEW YORK - In a discovery sure to fuel an old debate about our evolutionary history, scientists have found a remarkably complete skeleton of a 3-year-old female from the ape-man species represented by "Lucy. (redorbit.com)
  • Scientists have just completed the most accurate tally of the planet's species yet (though the projection still has a pretty healthy margin of error ). (treehugger.com)
  • The Guardian also spoke to Dr. Camilo Mora of the University of Hawaii and Dalhousie University in Halifax, Nova Scotia, who said that this quest is growing increasingly urgent: "Scientists have been working on this question of how many species for so many years. (treehugger.com)
  • According to the latest study Scientists have just completed the most accurate tally of the planet's species yet (though the projection still has a pretty healthy margin of error). (treehugger.com)
  • Approximately 86 percent of land species and 91 percent of creatures in the ocean have yet to be discovered, according to the findings by scientists at Dalhousie University in Canada and the University of Hawaii. (ibtimes.com)
  • The question of how many species exist has intrigued scientists for centuries and the answer, coupled with research by others into species' distribution and abundance, is particularly important now because a host of human activities and influences are accelerating the rate of extinctions, said lead author Camilo Mora of the University of Hawaii. (ibtimes.com)
  • The term 'minor grasses' refers to the degree of attention paid to these species by scientists, plant breeders, germplasm conservationists, and the commercial sector. (springer.com)
  • A team of scientists uncovered a new species of extinct turtle in southern Utah that features bizarre anatomy including a pig-like snout. (cnn.com)
  • Scientists at the University of Rochester and the J. Craig Venter Institute have discovered a copy of the genome of a bacterial parasite residing inside the genome of its host species. (redorbit.com)
  • The research, reported in today's Science, also shows that lateral gene transfer""the movement of genes between unrelated species""may happen much more frequently between bacteria and multicellular organisms than scientists previously believed, posing dramatic implications for evolution. (redorbit.com)
  • Youd think that if scientists were to discover a new species, it would be in some remote, uncharted tropical forest, not a laboratory in New York. (amnh.org)
  • NEW DELHI, India (CNN) -- Indian scientists have discovered three new species of bacteria in Earth's upper stratosphere that are resistant to ultraviolet radiation, researchers said. (cnn.com)
  • Scientists say a dead whale on a desolate beach and a skeleton hanging in a high school gym are a new species. (nationalgeographic.com)
  • Scientists say it is a newly discovered species of beaked whale. (nationalgeographic.com)
  • Advances in DNA research have helped scientists identify five new cetaceans in the past 15 years but two were dolphins and most were simple category splits between fairly similar species. (nationalgeographic.com)
  • Scientists include species and ecosystem factors among the mechanisms that, when combined, establish invasiveness in a newly introduced species. (rug.nl)
  • SUNDAY, Sept. 4, 2016 (HealthDay News) -- The discovery of a new species of pterosaur in Argentina is helping scientists learn about the evolution of these ancient flying reptiles. (medicinenet.com)
  • Wide-ranging generalists visit early succession stage habitats, but are not obligate species of those habitats because they use a mosaic of different habitats. (wikipedia.org)
  • The numbers of extinctions are only matched by the displaced species which have become greater in number as they struggle to establish in new niches and habitats, including the pathogens, the unwanted and the invasive. (earthtimes.org)
  • Note: For a species to be identified as invasive can depend on its establishment and spreading behaviors, non-native host habitats or regions, environmental laws, scientific study, and even popular attitudes. (wikimedia.org)
  • Invasive species - Humans have introduced non-native species (both intentionally and accidentally) to a wide variety of habitats, often with devastating consequences. (arkive.org)
  • The Center for Biological Diversity in Tucson, Arizona, has found that the US Fish and Wildlife Service (FWS) systematically ignored recommendations to increase habitats for endangered species between 2002 and 2007. (newscientist.com)
  • The European Community has provisions regarding species protection, the Habitats Directive concerning the protection of wild fauna and flora and the Birds Directive. (ymparisto.fi)
  • The Directives demand that species and their habitats are protected, and their hunting and other exploitation is regulated. (ymparisto.fi)
  • In addition there must be enough habitats for the species to ensure the survival of the species' population in the long term. (ymparisto.fi)
  • Plants are a crucial resource for human wellbeing and are a critical part for wildlife habitats, yet they often play second fiddle in the media to animal species that are in danger. (care2.com)
  • In the right habitats, several species-such as the Asian carp-provide food for hundreds of thousands of people. (brighthub.com)
  • The term as most often used applies to introduced species (also called "non-indigenous" or "non-native") that adversely affect the habitats and bioregions they invade economically, environmentally, or ecologically. (rug.nl)
  • Such invasive species may be either plants or animals and may disrupt by dominating a region, wilderness areas , particular habitats, or wildland-urban interface land from loss of natural controls (such as predators or herbivores ). (rug.nl)
  • To survive in so many different habitats, the world's 10,000 or so bird species have evolved into a spectacular diversity of forms. (nationalgeographic.com)
  • Instead, the biggest hurdles are the same that conservationists face when reintroducing endangered species to native habitats. (sciencenews.org)
  • The Burmese python is an invasive species with established populations in the Everglades National Park in Florida. (earthtimes.org)
  • 2.1.1 MBL also distinguishes and treats non-local species of native species as non-indigenous based on an assumption that populations may possess distinct traits or genetic diversity and may also possess associated non-native pathogens or other commensal or parasitic organisms. (mbl.edu)
  • I would argue it is now the only realistic way to maintain wild populations of some species. (newscientist.com)
  • One of the aims of species protection is to maintain the vital populations and areas of distribution of the native and established species. (ymparisto.fi)
  • In the past, the two morphologically distinct crocodile populations were believed to be different genera, then later different species, and then finally different subspecies,' explains first-author Mitchell Eaton. (amnh.org)
  • A study in the journal Proceedings of the National Academy of Sciences reports that hunting, fishing and plant gathering can speed up rates of species evolution, which may have negative effects on plant and animal populations. (npr.org)
  • This species is a prolific seeder and is fast-growing, and therefore it can expand rapidly from small populations. (iucnredlist.org)
  • A number of wild populations of species were born in captivity and now live free: Bald Eagle, Golden Lion Tamarin, Andean condors, red wolves. (umich.edu)
  • Controlling the exchange of genetic information between sexually reproducing populations has applications in agriculture, eradication of disease vectors, control of invasive species, and the safe study of emerging biotechnology applications. (nature.com)
  • Analytics really underpins the whole thing, potentially giving insights into species populations that WildTrack never had before. (sas.com)
  • Examples are ring species or species with subspecies , where it is often unclear if these should be considered separate species. (wikipedia.org)
  • sub_species($newval) Function: Get or set the scientific subspecies name. (cpan.org)
  • Our results match the distribution of subspecies, the principal components of genetic diversity, and the linear spatial-genetic correlation of the observed data, even though selection is expected to be important for traits of this species. (pnas.org)
  • The reassessments of several rhino species show that the subspecies of the black rhino in western Africa-the western black rhino-is officially extinct. (care2.com)
  • This not only ends a long debate about the taxonomy of this group, previously thought to consist of two closely related subspecies, but also defines a new, distinct species from genetic samples. (amnh.org)
  • The software is customised for each species and current projects include tracing the world's most endangered black rhino subspecies in Cameroon. (computerweekly.com)
  • Intrigued by the subspecies, Colin Groves, now an anthropologist at the Australian National University in Canberra, examined the skulls in 1970 and determined that they were indistinguishable from western gorillas, one of the two known species of gorilla. (nationalgeographic.com)
  • Large scale changes are occurring to our natural landscapes, often resulting in changes to the distribution and abundance of species living within these landscapes. (usgs.gov)
  • However, independent studies have shown that observed changes in the distribution and abundance of Populus species (a group of trees that are relatively weak competitors) in the Late Glacial (ca. 13 000-10 000 years ago) and in the 20th century could only be explained when the effects of climate change on its competitors were taken into account [ii] . (europa.eu)
  • An alien species is a species introduced by humans - either intentionally or accidentally - outside of its natural past or present distribution, however not all alien species have negative impacts, and it is estimated that between 5% and 20% of all alien species become problematic. (iucn.org)
  • Minor species" are all animals other than humans that are not one of the major species. (fda.gov)
  • This provision is limited to minor species that are not used as food for humans or other animals. (fda.gov)
  • Ancient humans presumably domesticated wolves or some other closely related species a long time ago -- perhaps multiple times on different continents. (techdirt.com)
  • From a biological perspective, humans are the species Homo sapiens . (stanford.edu)
  • The species used for a specific test depends on the predictive value for humans or on legislation. (tno.nl)
  • However, rodents are not always the best model for humans and so other species and transgenic mice are sometimes used. (tno.nl)
  • Strange and endangered species - A schoolboy reaches out to touch a humpheaded Maori wrasse as it swims in the world's largest Great Barrier Reef exhibit at the Sydney Aquarium in June 2003. (cnn.com)
  • The world's smallest and rarest species of wild pig was once believed to be extinct - but it may now be saved thanks to conservation efforts. (iucn.org)
  • The IUCN Red List was founded in 1963 and is the world's most comprehensive inventory of the global conservation status of biological species. (care2.com)
  • The Australian Spotted Jellyfish is an invasive species found in many of the world's oceans. (amnh.org)
  • Climate change - Droughts, ocean acidification, the loss of sea ice and an increase in storms and extreme weather events can all threaten species' survival. (arkive.org)
  • Climate change has already produced shifts in the distribution of some species , such as amphibians, grasses, migratory birds and butterflies. (telegraph.co.uk)
  • The study employed computer models to simulate the ways species' ranges are expected to move in response to changing temperatures and climatic conditions under three different climate change scenarios. (telegraph.co.uk)
  • Another co-author, Alison Cameron, from the University of Leeds, said: "A key aspect of this work is that it shows that even species existing in protected areas can be under imminent threat from climate change. (telegraph.co.uk)
  • Some places are ideal havens for species threatened by climate change. (newscientist.com)
  • Climate change is affecting the interaction of species that depend on each other for food or other reasons. (europa.eu)
  • Climate change has already lead to temporal mismatches between species that depend on each other for feeding and for pollination. (europa.eu)
  • What impact does climate change have on species diversity? (wsl.ch)
  • Before this text in 1686, the term species just meant some sort or kind of organism. (scienceblogs.com)
  • 3.1.3 May be requested to develop and submit a Non-indigenous Aquatic Organism Risk Analysis Protocol or a Species Specific Containment Protocol ( both to be written ) for review by the Non-indigenous Species Risk and Management Committee ( to be constituted ). (mbl.edu)
  • Ideally, the introduction of species-like barriers would result in an engineered organism that behaves and can be propagated in an identical fashion to its non-modified counterpart. (nature.com)
  • In new research, he asks: Could organism interactions be described without mentioning species at all? (eurekalert.org)
  • Instead of thinking about species, what if we imagined a microbial community as a free-for-all organism soup and add structure bit by bit - like this gene tends to associate with that gene," said Tikhonov. (eurekalert.org)
  • Pioneer species will die creating plant litter , and break down as " leaf mold " after some time, making new soil for secondary succession (see below), and nutrients for small fish and aquatic plants in adjacent bodies of water. (wikipedia.org)
  • Aquatic invasive species may include plants or animals. (ncsl.org)
  • Aquatic invasive species are of particular concern for a variety of reasons. (ncsl.org)
  • Coordinated prevention and enforcement campaigns are of particular importance when dealing with aquatic invasive species, as waters often cross or form state boundaries and people move species between state lines knowingly or unknowingly. (ncsl.org)
  • For more information on specific aquatic invasive species, visit the National Invasive Species Information Center's partial listing of aquatic invasive species. (ncsl.org)
  • 3.1 The Marine Resources Department coordinates all aspects of aquatic non-indigenous species. (mbl.edu)
  • The Convention on Migratory Species (UNEP/CMS) , also known as the Bonn Convention , aims to conserve terrestrial, aquatic and avian migratory species throughout their range. (cms.int)
  • The Invasive Species Team work across three major areas to reduce the impact of invasive alien species by providing robust scientific knowledge, support policy development and work on the ground. (iucn.org)
  • What is an Invasive Alien Species? (iucn.org)
  • It is these species that are termed ' invasive alien species' (IAS). (iucn.org)
  • "An invasive alien species (IAS) is a species that is established outside of its natural past or present distribution, whose introduction and/or spread threaten biological diversity " Convention on Biological Diversity. (iucn.org)
  • For example within Europe the numbers of invasive alien species has increased by 76% between 1970 and 2007. (iucn.org)
  • Plants, mud, and animals such as mussels can often cling to the exterior of boats and boat trailers, while water contained in ballast tanks and other boat compartments can also inadvertently spread alien species. (ncsl.org)
  • When is an alien species really alien? (earthtimes.org)
  • An IAS is an Invasive Alien Species, whether human-directed or not, whether plant or animal, or the disease/parasites they carry. (earthtimes.org)
  • The European Union defines "Invasive Alien Species" as those that are, firstly, outside their natural distribution area, and secondly, threaten biological diversity . (rug.nl)
  • They are identified by the rigorous study of differences between individual species, making use of minute morphological details, tests of reproductive isolation , or DNA -based methods such as molecular phylogenetics or DNA barcoding . (wikipedia.org)
  • French Marigold " and " human being " (arguments about Neanderthals not withstanding) are vernacular (or common) names, but still refer to individual species. (microformats.org)
  • These results imply that simulations can be used to accurately describe empirical data for complex spatial-genetic traits of an individual species. (pnas.org)
  • Researchers are working collaboratively with national and international organisations and institutions on a range of projects, spanning (but not limited to) genetic diversity in captive Amur leopards, development of keeper-animal interactions and relationships in captive rhinos, personality profiling in reintroduced species such as Telfair's skink and arid land foxes, and gastrointestinal health in captive tigers and cheetahs. (ntu.ac.uk)
  • Negative effects on single species are often amplified by changes in interactions with other species, in particular for specialist species. (europa.eu)
  • Similarly, many interactions between highly conserved proteins in one species are not conserved, even between very close species. (cmu.edu)
  • This part will rely on recent studies regarding the integration of expression data across species, combining, comparing and aligning protein interaction networks in multiple species and experimental studies that compare protein-DNA interactions across species and in hybrids. (cmu.edu)
  • In the final part of the class we will discuss methods that attempt to combine multiple functional genomics datasets for a systems biology comparison of interactions across species. (cmu.edu)
  • In fact, an analysis of the IUCN Red List shows that they are the second most common threat associated with species that have gone completely extinct, and are the most common threat associated with extinctions of amphibians, reptiles and mammals. (iucn.org)
  • Invasive species pose a significant threat to natural resources in the U.S. (ncsl.org)
  • Species of major concern for NWRC and all of Wildlife Services include starlings, pigeons, feral swine, nutria, foxes, cats, and rats.The research examined in this new project will focus on invasive rodent species because of the significant threat they pose and because they can serve as a model for other vertebrates. (usda.gov)
  • However, some species, such as the cheetah , have been persecuted after gaining a negative reputation for feeding upon livestock or crops or posing a threat to human safety. (arkive.org)
  • When hunting was the major threat to species, as it was with the alligator, solutions came easier. (csmonitor.com)
  • In the 19th century, biologists grasped that species could evolve given sufficient time. (wikipedia.org)
  • Biologists disagree on the definition of the term 'species,' and philosophers disagree over the ontological status of species. (stanford.edu)
  • The second is whether biologists should be species pluralists or species monists. (stanford.edu)
  • Biologists offer over twenty definitions of the term 'species' (Hey 2001). (stanford.edu)
  • Monists argue that biologists should attempt to find the correct definition of 'species. (stanford.edu)
  • Or, as some philosophers and biologists argue, is the term 'species' a theoretically empty designation? (stanford.edu)
  • Biologists have had a hard time finding biological traits that occur in all and only the members of a species. (stanford.edu)
  • Marine biologists off the coast of Australia have discovered what they believe to be hundreds of new species on the Great Barrier and Ningaloo Reefs. (scienceblogs.com)
  • Biologists plan to breed the panther in captivity to help propagate the species. (csmonitor.com)
  • Our species resources for schools encourages young people to find out more about our planet's wildlife and the threats they faces. (wwf.org.uk)
  • Our engaging species resources have been designed for both primary and secondary schools, enabling your pupils to get a better understanding of our planet's most endangered species, the threats they face, and how we can all take action to ensure their survival. (wwf.org.uk)
  • Learn incredible facts you'll want to share about some of our planet's most amazing species. (wwf.org.uk)
  • The total catch reported for this species to FAO for 1999 was 17 770 t. (fao.org)
  • According to Executive Order 13112 , which established the National Invasive Species Council in 1999, invasive species are "non-native (or alien) to the ecosystem under consideration and whose introduction causes or is likely to cause economic or environmental harm or harm to human health. (ncsl.org)
  • A new Amazon species was found roughly every three days between 1999 and 2009-among them a "bluetooth" tarantula and an electric fish. (nationalgeographic.com)
  • As informal taxonomic ranks , species group , species aggregate , and superspecies are also in use. (wikipedia.org)
  • In the nomenclature codes of zoology and bacteriology, no taxonomic ranks are defined at the level between subgenera and species, while the botanical code defines four ranks below genera (section, subsections, series and subseries). (wikipedia.org)
  • Different informal taxonomic solutions have been used to indicate a species complex. (wikipedia.org)
  • Species are the fundamental taxonomic units of biological classification. (stanford.edu)
  • http://www.spacefornature.co.uk/biorec/taxoncheck.htm Taxon Checker] - a software tool which, given a common name, searches for the relevant taxonomic data and outputs the selected species' details as (among other options) an HTML fragment. (microformats.org)
  • People use the vernacular AND taxonomic names of species in everyday speech and writing - just read or watch any populist gardening magazine or television programme. (microformats.org)
  • All are the taxonomic (or scientific) names of unique species. (microformats.org)
  • Or supposing someone writes a long, chronologically-ordered web page about all the birds, insects, mammals and plants they saw on a wildlife safari, with lots of prose description about the paces where they saw them and the people they were with, but you want to extract a list of species, sorted into alphabetical order within taxonomic class (birds first, then insects then. (microformats.org)
  • Human DNA made it into the top five most abundant species in NYC subways, after insects and microbes. (techdirt.com)
  • This new species of "digger wasp" is known for how the female paralyzes other insects, buries them, and then lays eggs on top of them, providing food for their offspring. (yahoo.com)
  • With over 2,500 species of cicada scattered across the globe, it's a wonder that there isn't more misinformation about these unique insects. (brighthub.com)
  • The species name sanctus (Latin for "sacred") occurs in several binomial names in the taxonomy of life. (wikipedia.org)
  • Accurate taxonomy is necessary for conservation management of each species, and now we can calculate subsistence hunting levels that are manageable. (amnh.org)
  • Western juniper may hybridize with Utah juniper ( J. osteosperma ) where the two species occur together in northwestern Nevada east of California's Warner Mountains. (fed.us)
  • Minor use" drugs are for intended uses in major species (horses, dogs, cats, cattle, pigs, turkeys, and chickens) for diseases that occur infrequently or in limited geographic areas and in only a small number of animals annually. (fda.gov)
  • But almost all these extinctions either occurred in environments with high concentrations of "endemic" species that occur nowhere else, or involved moving species between continents. (newscientist.com)
  • Beds of Halophila stipulacea occur in the shallows (Jacobs 1985), but this species also occurs in much deeper water and has been recorded to depths greater than 50 m (Lipkin 1977). (iucnredlist.org)
  • More research is needed to evaluate this species where gaps in population trends occur within its range. (iucnredlist.org)
  • It is vital when saving plant species that fast action has to occur. (brighthub.com)
  • The underlying concept of addressing IAS and their impacts is that the most effective and cost efficient way is to prevent the introduction in the first place through the management of 'pathways', for example through regulation of trade or movement of certain species. (iucn.org)
  • Wildtrack, a conservation organisation, is using footprint identification technology to save endangered species in the wild. (computerweekly.com)
  • The WildTrack Footprint Identification Technique (FIT) is a tool for non-invasive monitoring of endangered species through digital images of footprints. (sas.com)
  • They are the largest sea turtle species and also one of the most migratory, crossing both the Atlantic and Pacific oceans. (cnn.com)
  • Introduced predators can decimate local species which are not adapted to avoid predation, for example ground dwelling birds like the kakapo . (arkive.org)
  • The USDA is responsible for enforcing regulations specific to the import and export of plants regulated by CITES as well as the Endangered Species Act (ESA). (usda.gov)
  • FWS also requires import permits for wild collected CITES Appendix l species. (usda.gov)
  • Strange and endangered species - Black spider-monkeys - also known as the Guiana or red-faced spider monkey - are one of the main monkey species encountered in healthy tropical rainforests. (cnn.com)
  • If as Linnaeus thought, species were fixed, there would be no problem, but evolutionary processes cause species to change continually, and to grade into one another. (wikipedia.org)
  • These species have been on their own evolutionary trajectory for a long time,' says George Amato , Director of the Sackler Institute. (amnh.org)
  • Eleven countries in the arid and semi-arid regions of the world participated in the systematic collection of seeds of some 281 provenances of 43 species, mainly of the genera Acacia and Prosopis , and in the establishment of comparative trials. (fao.org)
  • Besides the five major grass genera used widely for both agriculture and non-agriculture purposes, there is quite a large group of neglected cool-season minor grass species which enrich the crop spectrum. (springer.com)
  • Hybrid speciation can be a component in the evolution of a species complex. (wikipedia.org)
  • Some authors apply the term also to a species with intraspecific variability , which might be a sign of ongoing or incipient speciation . (wikipedia.org)
  • Species are the result of speciation. (stanford.edu)
  • We find that ring species are often unstable to speciation or mixing but can persist for extended times depending on species and landscape features. (pnas.org)
  • Here we show that neutral models of speciation can also account for the genetic diversity of a single species in a context in which geographical barriers play a central role in that diversity. (pnas.org)
  • 19% of all mammals, 10% of all bird species have been bred in captivity. (umich.edu)
  • One in eight of the remaining species, 1,183 bird species (or 12%), have a real risk of becoming extinct in the next 100 years. (camacdonald.com)
  • The host's genes actually hold the coding information for a completely separate species. (redorbit.com)
  • A species complex is typically considered as a group of close, but distinct species. (wikipedia.org)
  • On 4 June 2018, information from the the Fire Case Study of the Sapsis [ 83 ] thesis was moved from this Species Review and integrated in the Research Project Summary of that study. (fed.us)
  • Researchers who have analysed the hierarchical categorisation of life on Earth to estimate how many undiscovered species exist say the diversity of life is not equally divided between land and ocean. (treehugger.com)
  • We compare the diversity of a neutral model to empirical findings about a ring species formed when population expansion occurred around a geographical barrier. (pnas.org)
  • We research the diversity of plants and animals, especially in the forests and mountains, and examine the factors that affect species composition. (wsl.ch)
  • Our work provides the scientific basis for monitoring and maintaining species diversity in Switzerland. (wsl.ch)
  • Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. (wikipedia.org)
  • True, there have been ecological changes, and we spend a lot of money trying to get rid of aliens, but Britain appears virtually immune to extinctions from introduced species. (newscientist.com)
  • This species has a much narrower ecological range in the eastern Mediterranean, being restricted to soft substrates only. (iucnredlist.org)
  • At present we don't know how many climate-threatened species with narrow distributions could thrive if they were transported elsewhere, but further research should reveal this. (newscientist.com)
  • It is one of the most threatened of the five rhino species, with as few as 35 individuals surviving. (cnn.com)
  • Dozens of Candida species--a group of fungi--cause infections, ranging from mild oral and vaginal yeast infections to severe invasive infections. (cdc.gov)
  • We run national data centres for lichen and fungi, thereby providing the basis for the protection of these two species groups. (wsl.ch)
  • Since some uncolonized land may have thin, poor quality soils with few nutrients, pioneer species are often hardy plants with adaptations such as long roots, root nodes containing nitrogen-fixing bacteria , and leaves that employ transpiration . (wikipedia.org)
  • Note that they are often photosynthetic plants, as no other source of energy (such as other species) except light energy is often available in the early stages of succession, thus making it less likely for a pioneer species to be non-photosynthetic. (wikipedia.org)
  • The Endangered Species Act (ESA) provides a critical safety net for America's native fish, wildlife and plants. (fws.gov)
  • The ability of animals and plants to move to new areas was also considered, using two alternatives - one where species could not spread at all, the other assuming "unlimited" or successful movement. (telegraph.co.uk)
  • There are many species of rare and endangered plants. (brighthub.com)
  • The causes of endangered species of plants are similar to those of endangered animals. (brighthub.com)
  • Many conservation projects are used to try and replenish the endangered species of plants. (brighthub.com)
  • Grazing animals are a large contributor to causing endangered species of plants. (brighthub.com)
  • When plants are collected for nurseries or florists, the plant species number decreases. (brighthub.com)
  • Plant collectors of rare plants are contributing to endangered species of plants. (brighthub.com)
  • The multiple causes of endangered species of plants often occurs over time. (brighthub.com)
  • This includes non-native invasive plant species labeled as exotic pest plants and invasive exotics growing in native plant communities . (rug.nl)