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Point at which a population cannot survive
Extinction threshold is a term used in conservation biology to explain the point at which a species, population or metapopulation, experiences an abrupt
Extinction_threshold
List of extinct species
lists of species and organisms that have become extinct. The reasons for extinction range from natural occurrences, such as shifts in the Earth's ecosystem
Lists_of_extinct_species
Concept in population ecology
this threshold will ultimately lead to the extinction of that parasite in that population. Facilitation processes increase the extinction threshold, making
Density_dependence
Termination of a taxon in a region which it previously inhabited
though it still exists elsewhere. Local extinctions are contrasted with global extinctions. Local extinctions mark a change in the ecology of an area
Local_extinction
Mass extinction event c. 444 million years ago
Marine extinction intensity during Phanerozoic % Millions of years ago (H) K–Pg Tr–J P–Tr Cap Late D O–S The Late Ordovician mass extinction (LOME), sometimes
Late Ordovician mass extinction
Late_Ordovician_mass_extinction
Mass extinction event about 66 million years ago
Cretaceous–Paleogene (K–Pg) extinction event, formerly known as the Cretaceous-Tertiary (K–T) extinction event, was a major mass extinction of three-quarters of
Cretaceous–Paleogene extinction event
Cretaceous–Paleogene_extinction_event
Class of models about the dynamics of extinctions of species
in extinction vortices include reduced fecundity, changes in dispersal patterns, and decreased population density. Error catastrophe Error threshold Muller's
Extinction_vortex
Environmental movement
The Voluntary Human Extinction Movement (VHEMT) is an environmental movement that calls for all people to abstain from reproduction in order to cause the
Voluntary Human Extinction Movement
Voluntary_Human_Extinction_Movement
Mass extinction ending the Triassic period
Marine extinction intensity during Phanerozoic % Millions of years ago (H) K–Pg Tr–J P–Tr Cap Late D O–S The Triassic–Jurassic (Tr-J) extinction event
Triassic–Jurassic_extinction
Future extinction of species due to events in the past
In ecology, extinction debt is the future extinction of species due to events in the past. The phrases dead clade walking and survival without recovery
Extinction_debt
Termination of a species' lineage
Extinction is the termination of a species via the death of its last member. A taxon may become functionally extinct before the death of its last member
Extinction
Level of extinction from which a species cannot recover
demographic, or environmental factors. The quasi-extinction threshold, or sometimes called the quasi-extinction risk is the population size below which a species
Quasi-extinction
End of the human species
Human extinction, or omnicide, refers to the possible ending of the human species, either by population decline due to singular natural events—for example
Human_extinction
End of viability for a population
called "functional extinction," which takes a more ecological approach. Some scientists argue that the threshold for extinction should not be the complete
Functional_extinction
Earth's most severe extinction event
Marine extinction intensity during Phanerozoic % Millions of years ago (H) K–Pg Tr–J P–Tr Cap Late D O–S The Permian–Triassic extinction event, colloquially
Permian–Triassic extinction event
Permian–Triassic_extinction_event
Rapid decrease in Earth's biodiversity
Marine extinction intensity during Phanerozoic % Millions of years ago (H) K–Pg Tr–J P–Tr Cap Late D O–S An extinction event (also known as a mass extinction
Extinction_event
Extinction of large animals at the end of the last Ice Age
The Late Pleistocene to the beginning of the Holocene saw the extinction of the majority of the world's megafauna, typically defined as animal species
Late_Pleistocene_extinctions
Bioengineering project with the goal of replicating an extinct species
two males represent the first living examples of the species since its extinction approximately 10,000 years ago. Khaleesi, a female, was born later, on
Colossal Biosciences dire wolf project
Colossal_Biosciences_dire_wolf_project
Standard rate of extinction
Background extinction rate (BER), also known as the normal extinction rate, refers to the standard rate of extinction in Earth's geological and biological
Background_extinction_rate
Indication of the chance of extinction
Highest risk of extinction in the wild Endangered (EN) – Higher risk of extinction in the wild Vulnerable (VU) – High risk of extinction in the wild Near
Conservation_status
Indian organisation for big cat conservation (established 2023)
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
International Big Cat Alliance
International_Big_Cat_Alliance
This is a list of extinction events, both mass and minor: "Big Five" major extinction events (see graphic) Marine extinction intensity during Phanerozoic
List_of_extinction_events
2014 nonfiction book by Elizabeth Kolbert
sixth extinction. In the book, Kolbert chronicles previous mass extinction events, and compares them to the accelerated, widespread extinctions during
The Sixth Extinction: An Unnatural History
The_Sixth_Extinction:_An_Unnatural_History
Symbol to represent mass extinction
The extinction symbol represents the threat of holocene extinction on Earth; a circle represents the planet and a stylised hourglass is a warning that
Extinction_symbol
Second of the big five mass extinctions
Marine extinction intensity during Phanerozoic % Millions of years ago (H) K–Pg Tr–J P–Tr Cap Late D O–S The Late Devonian mass extinction, also known
Late_Devonian_mass_extinction
Topics referred to by the same term
Ecological threshold Error threshold (evolution) Extinction threshold Lasing threshold Percolation threshold Polygyny threshold model Threshold cryptosystem
Threshold
Mass extinction event 33.9 million years ago
E-OG Marine extinction intensity during Phanerozoic % Millions of years ago (H) K–Pg Tr–J P–Tr Cap Late D O–S The Eocene–Oligocene extinction event, also
Eocene–Oligocene extinction event
Eocene–Oligocene_extinction_event
IUCN conservation category
alphabetical list Ex situ conservation Extinction Ecological extinction Lists of extinct species Local extinction Nature conservation Wildlife conservation
Extinct_in_the_wild
Process of re-creating an extinct organism
De-extinction (also known as resurrection biology, or species revivalism) is the process of human intervention to generate an organism that either resembles
De-extinction
Termination of a species caused by conservation of a different species
Conservation-induced extinction is where efforts to save endangered species lead to the extinction of other species. This mostly threatens the parasite
Conservation-induced extinction
Conservation-induced_extinction
Process by which a natural habitat becomes incapable of supporting its native species
the balance of species keeping up with the extinction threshold leading to a higher likelihood of extinction. Habitat loss is one of the main environmental
Habitat_destruction
Ecology term
the ecological extinction of a keystone predator can reduce species diversity in an ecosystem. The threshold of ecological extinction has passed due to
Ecological_extinction
Type of evolutionary extinction vortex
In evolutionary genetics, mutational meltdown is a sub class of extinction vortex in which the environment and genetic predisposition mutually reinforce
Mutational_meltdown
list of recently extinct butterflies, their former ranges, and dates of extinction. Libythea cinyras (Mauritius, 1866) Mbashe River buff, Deloneura immaculata
List_of_extinct_butterflies
Ecological trend recorded since the late 20th century
activity or meteor impact. The Permian–Triassic extinction event saw the greatest level of insect extinction, and the Cretaceous–Paleogene the second highest
Decline_in_insect_populations
Last known individual of a species or subspecies
matching ancient descriptions. Conservation status De-extinction Extinction Holocene extinction Lists of extinct animals Rare species Terminal speaker
Endling
Evolutionarily Significant Unit - Extinction - Extinction event - Ex-situ conservation - Extinct in the wild - Extinction threshold Flagship species - Forest
Index of conservation articles
Index_of_conservation_articles
Practice of protecting wild plant and animal species and their habitats
IUCN estimates that 42,100 species of the ones assessed are at risk for extinction. Expanding to all existing species, a 2019 UN report on biodiversity put
Wildlife_conservation
Paleoproterozoic surge in atmospheric oxygen
is toxic to the then-mostly anaerobic biosphere, may have caused the extinction/extirpation of many early organisms on Earth—mostly archaeal colonies
Great_Oxidation_Event
Type of species requiring human intervention
predators, human disturbance. The threats render the species at risk of extinction, absent ongoing conservation management. Management actions sufficient
Conservation-reliant_species
Restoring of wilderness environments
remained vulnerable to extinctions if populations were small and isolated. In 1987, William D. Newmark's study of extinctions in national parks in North
Rewilding
Risk of plant or animal species becoming extinct due to climate change
several plausible pathways that could lead to plant and animal species extinction from climate change. Every species has evolved to exist within a certain
Extinction risk from climate change
Extinction_risk_from_climate_change
Species with a large effect on its environment
populations to crash, or may allow predators to drive other prey species to extinction; and removing a plant species may result in the loss of animals that depend
Keystone_species
Depleting a renewable resource
for reproduction. Such practices can result in extinction at the population level and even extinction of whole species. In conservation biology, the term
Overexploitation
Conservation status assigned by NatureServe
extensive and intensive searches, with rediscovery not reasonably expected). Extinction is here considered a global (range-wide) phenomenon, while extirpation
NatureServe conservation status
NatureServe_conservation_status
Ubangi River Transportation of logs "Has the final countdown to wildlife extinction in Northern Central African Republic begun?" (PDF). Africa Journal Ecology:Blackwell
Wildlife of the Central African Republic
Wildlife_of_the_Central_African_Republic
Accumulation of harmful mutations
experiments have confirmed the existence of the ratchet and the consequent extinction of populations in many organisms (under intense drift and when recombinations
Muller's_ratchet
Movement to protect the biosphere
philosophy and conservation movement focused on protecting species from extinction, maintaining and restoring habitats, enhancing ecosystem services, and
Nature_conservation
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Conservation in the Republic of Ireland
Conservation_in_the_Republic_of_Ireland
Taxon that disappears from the fossil record, only to reappear later
observational artifacts that appear to occur either because of (local) extinction, later resupplied, or as a sampling artifact. The fossil record is inherently
Lazarus_taxon
humanity Durrell Wildlife Conservation Trust - mission to save species from extinction EcoHealth Alliance - protecting the health of people, animals, and the
List of nature conservation organizations
List_of_nature_conservation_organizations
Evolutionary process
the expense of the smaller, rarer species, eventually driving them to extinction. Eventually, only a few species remain, each distinctly different from
Speciation
Group of separated yet interacting ecological populations
given percolation threshold, habitat fragmentation effects take place in these configurations predicting more drastic extinction thresholds. For conservation
Metapopulation
Previously inhabited areas reclaimed by vegetation and wildlife
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Passive_rewilding
Potential for a species to become threatened or extinct
In conservation biology, latent extinction risk is a measure of the potential for a species to become threatened. Latent risk can most easily be described
Latent_extinction_risk
Conservation status indicator
the conservation status of major species groups, and measures trends in extinction risk over time. By conducting conservation assessments at regular intervals
Red_List_Index
2014 film by Michael Bay
Transformers: Age of Extinction is a 2014 science fiction action film based on Hasbro's Transformers toy line. It is the sequel to Transformers: Dark of
Transformers: Age of Extinction
Transformers:_Age_of_Extinction
Extinct subspecies of Iberian ibex
The Pyrenean ibex is the first animal to have been brought back from extinction through cloning and also the only one to become extinct twice. Multiple
Pyrenean_ibex
Organism resembling a form long shown in the fossil records
endangered, possibly extinct and has the unofficial status of functional extinction. Casane, Didier; Laurenti, Patrick (1 April 2013). "Why coelacanths are
Living_fossil
Ongoing mass extinction of amphibian species worldwide
amphibian populations, including population decline and localized mass extinctions, have been observed in locations all over the world. This type of biodiversity
Decline in amphibian populations
Decline_in_amphibian_populations
UN awareness effort to protect the environment
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
World_Environment_Day
Statistical effects of small numbers on a population
Therefore, small populations are often considered at risk of endangerment or extinction, and are often of conservation concern. The influence of stochastic variation
Small_population_size
American conservation organization
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Ducks_Unlimited
IUCN conservation category
species (including animals, plants and fungi) which is vulnerable to extinction in the near future. Species that are threatened are sometimes characterised
Threatened_species
management of bears and their habitat with a view to preventing their extinction. Bears face serious threats on many fronts, most of which are due to human
Bear_conservation
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Conservation_in_Indonesia
rate of extinction may be up to 140,000 species per year. List of extinct animals Extinction event Quaternary extinction event Holocene extinction Timeline
Timeline of extinctions in the Holocene
Timeline_of_extinctions_in_the_Holocene
Global environmental organization
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
The_Nature_Conservancy
Protected area in the European Union under the Habitats Directive
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Special_Area_of_Conservation
Postulated extinct species without evidence
concepts Extinction debt Extinction risk from climate change Extinction threshold Quasi-extinction Field of bullets Hypothetical species Latent extinction risk
Hypothetical_species
Bee conservation charity in Ireland
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Irish Bee Conservation Project
Irish_Bee_Conservation_Project
of Polar Bears. Specifically in ecology, morphology, reproduction, and extinction risk. According to the World Wildlife Fund, the polar bear is important
Polar_bear_conservation
Organization
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Painted_Dog_Conservation
Wildlife sanctuary in Malaysia
concepts Extinction debt Extinction risk from climate change Extinction threshold Quasi-extinction Field of bullets Hypothetical species Latent extinction risk
Sepilok Orangutan Rehabilitation Centre
Sepilok_Orangutan_Rehabilitation_Centre
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Conservation_in_Malaysia
Habitat destruction • Holocene extinction • Invasive species • Poaching • Pollinator decline • Species extinction • Threshold host density • Wildlife trade
List_of_environmental_issues
International ecological preservation initiative
near reserve edges, and show that enlarging protected areas can reduce extinction risk by creating larger core zones that are difficult for extractive users
30_by_30
Non-profit organisation based in Namibia
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Cheetah_Conservation_Fund
Geological process
fossil group or a reduction, these may equate to speciation events or extinction events, or may only represent migration. Records of the appearance and
Bioevent
UK-based nature conservation charity
through to worms and woodlice. Buglife's aim is to prevent invertebrate extinctions and to maintain sustainable populations of invertebrates in the United
Buglife
Study of threats to biological diversity
protecting species, their habitats, and ecosystems from excessive rates of extinction and the erosion of biotic interactions. It is an interdisciplinary subject
Conservation_biology
Interdisciplinary study of extinction avoidance
management, conservation of genetic diversity, and the prevention of species extinction. Scientists involved in conservation genetics come from a variety of fields
Conservation_genetics
American evolutionary biologist and ecologist (born 1951)
particular, his model on the effect of habitat fragmentation on the extinction threshold of territorial species was central to the debate about the conservation
Russell_Lande
Large animals
widely, though a common threshold is approximately 45 kilograms (99 lb), this lower end being centered on humans, with other thresholds being more relative
Megafauna
This timeline of extinctions is a chronological list of biological species, subspecies, and other evolutionary significant units recorded to have disappeared
Timeline of extinctions in the 20th century
Timeline_of_extinctions_in_the_20th_century
This timeline of extinctions is a chronological list of biological species, subspecies, and other evolutionary significant units recorded to have disappeared
Timeline of extinctions in the 19th century
Timeline_of_extinctions_in_the_19th_century
Scientific study of renewing and restoring ecosystems
Scientists estimate that the current species extinction rate, or the rate of the Holocene extinction, is 1,000 to 10,000 times higher than the normal
Ecological_restoration
IUCN conservation category
Endangered Species Act of 1973. This act is said to protect species from extinction by concerns and acts of conservation. Conservation-dependent species rely
Conservation-dependent species
Conservation-dependent_species
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Wildlife_of_Oman
Reduction in frequency of deleterious alleles through inbreeding
because inbreeding depression may be a relevant factor determining the extinction risk of endangered populations, and because conservation programs can
Genetic_purging
primarily driven by darkness after the Chicxulub impact and by extinction thresholds influenced by body size. The first record of Plumalina sp. (an organism
2026_in_paleontology
Phenomenon where a species is perpetuated by a daughter species
Pseudoextinction (or phyletic extinction) of a species occurs when all members of the species are extinct, but members of a daughter species remain alive
Pseudoextinction
UK wildlife charity
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Whale and Dolphin Conservation
Whale_and_Dolphin_Conservation
Practice of protecting the natural environment
with Australia being the world leader in coal exportation and species extinctions. Some have been motivated to proclaim it is Australia's responsibility
Environmental_protection
Conservation policy
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Roadless_area_conservation
Effort to increase bison in North America
diverse effort to bring American bison (Bison bison) back from the brink of extinction. Plains bison, a subspecies (Bison bison bison), are a keystone species
Conservation of American bison
Conservation_of_American_bison
Law enforcement officers responsible for protecting wildlife
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Conservation_officer
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Raptor_conservation
Areas protected for having ecological or cultural importance
genetic diversity, and potential for adaptations, lowering the risk of extinction. The objective of protected areas is to conserve biodiversity and to provide
Protected_area
US non-profit organization
Conservation-induced extinction Conservation status Endemism Ex-situ conservation Extinction threshold In-situ conservation Latent extinction risk Marine conservation
Sea_Turtle_Conservancy
EXTINCTION THRESHOLD
EXTINCTION THRESHOLD
Girl/Female
Australian, French, Indian, Latin, Malayalam
Cultural; Goddess of the Threshold
Female
English
Modern English name derived from the Sanskrit word nirvana, NIRVANA means "disappearance, extinction (of the soul)."Â
Boy/Male
Arabic, Muslim
Gateway; Threshold
Boy/Male
Indian
Threshold
Boy/Male
Biblical
Threshold, silver cup.
Surname or Lastname
English
English : probably a variant spelling of Purcell, or alternatively of Percil (from Old French percer ‘to pierce’ + soel, suel ‘threshold’).
Boy/Male
Muslim/Islamic
Threshold
Surname or Lastname
English
English : variant of Selman.German (Sillmann) : possibly a variant of Sieler, or a topographic name for someone living on a ridge, from Low German süll, sill ‘sill’, ‘threshold’, ‘ramp’.
Boy/Male
Arabic, French, Gujarati, Hindu, Indian, Muslim, Sindhi
Old Arabic Name; Threshold
Boy/Male
Muslim
Threshold
Girl/Female
Latin
Goddess of the threshold.
Biblical
threshold; silver cup
Boy/Male
Arabic, Muslim
Threshold; Gateway
Girl/Female
Latin
Goddess of the threshold.
EXTINCTION THRESHOLD
EXTINCTION THRESHOLD
Boy/Male
American, Anglo, Australian, British, English, Jamaican
From the Water Meadow; Enchanting; Cunning; Charming
Boy/Male
Hindu
Light of the Sun, Astrologer, Luminous or bright or glowing
Boy/Male
Gujarati, Hindu, Indian, Malayalam, Marathi, Telugu
Sweet Sounding Recitation
Boy/Male
Australian, French, German
Strong Counselor
Girl/Female
Tamil
Dyumna | தயà¯à®®à¯à®¨à®¾
Glorious
Girl/Female
Tamil
Prapti | பà¯à®°à®¾à®ªà¯à®¤à®¿
Achievement, Discovery, Gain, Determination
Boy/Male
Tamil
Girl/Female
Teutonic
Strong like an eagle.
Biblical
answerings; singings; afflicted
Girl/Female
Irish
Formed like Aidan from aed â€fire.†Aideen loved her husband Oscar, a grandson of Fionn Mac Cool (read the legend), so much that when he fell in battle she died of a broken heart.
EXTINCTION THRESHOLD
EXTINCTION THRESHOLD
EXTINCTION THRESHOLD
EXTINCTION THRESHOLD
EXTINCTION THRESHOLD
n.
A coming to a close; cessation; extinction; termination; end.
n.
End; conclusion; termination; extinction.
v. i.
Total privation or loss; extinction; cessation; as, the death of memory.
n.
The annihilation or extinction of a right or obligation.
n.
Extraction.
n.
Descent; pedigree; extraction.
n.
State of being extinguished or of ceasing to be; destruction; suppression; as, the extinction of life, of a family, of a quarrel, of claim.
n.
A method or practice of the administration of the sacrament by dipping the bread or wafer in the wine and administering both together.
n.
The act of extracting, or drawing out; as, the extraction of a tooth, of a bone or an arrow from the body, of a stump from earth, of a passage from a book, of an essence or tincture.
n.
Act of quenching or extingishing.
n.
Lineage; extraction; descent; sometimes, high birth; noble extraction.
n.
The act of tingeing or dyeing.
n.
Act of wasting away; a consuming; extinction.
a.
Of mean extraction.
n.
Good extraction; dignity of birth.
n.
Extinction.
n.
The act of extinguishing or making extinct; a putting an end to; the act of putting out or destroying light, fire, life, activity, influence, etc.
n.
Extraction; descent.
n.
A building up; construction.
n.
The act of obliterating, or the state of being obliterated; extinction.