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58-866: The Una Biological Reserve, which is in the Atlantic Forest biome and covers 18,715 hectares (46,250 acres), was created on 10 December 1980. It became part of the Central Atlantic Forest Ecological Corridor , created in 2002. It is in the Una municipality of Bahia. The climate is hot and humid, with annual rainfall over 1,800 millimetres (71 in). The temperature varies from 19 to 28 °C (66 to 82 °F), with an average of 24 °C (75 °F). Elevation ranges from 0 to 400 metres (0 to 1,312 ft) above sea level. The terrain has isolated plateaus, mostly around 200 to 300 metres (660 to 980 ft) in height, within

116-556: A cave environment limits an organism's ability to disperse, since caves are often not connected to each other. One hypothesis for how closely related troglobite species could become isolated from one another in different caves is that their common ancestor may have been less restricted to cave habitats. When climate conditions became unfavorable, the ancestral species was extirpated from the surface, but some populations survived in caves, and diverged into different species due to lack of gene flow between them. Isolated islands commonly develop

174-631: A corridor, which will be known as the Central Biodiversity Corridor , in the Atlantic Forest and one in the Amazon. The Brazilian Development Bank has been financing, with non-reimbursable loans, 16 to 18 ecosystem restoration projects totaling 3,500 hectares and costing approximately $ 22 million under the so-called Iniciativa BNDES Mata Atlântica. In order to preserve diversity, the state of São Paulo has created

232-455: A defined geographical area. Other terms that sometimes are used interchangeably, but less often, include autochthonal, autochthonic, and indigenous; however, these terms do not reflect the status of a species that specifically belongs only to a determined place. The word endemic is from Neo-Latin endēmicus , from Greek ἔνδημος, éndēmos , "native". Endēmos is formed of en meaning "in", and dēmos meaning "the people". The word entered

290-478: A euendemic the vicariance was geologic in nature, such as the movement of tectonic plates, but in a cryptoendemic the disjunct distribution was due to the extinction of the intervening populations. There is yet another possible situation that can cause a disjunct distribution, where a species is able to colonize new territories by crossing over areas of unsuitable habitat, such as plants colonizing an island – this situation they dismiss as extremely rare and do not devise

348-597: A flat coastal plain. Removal of the original forest cover has caused accelerated erosion of the plateaus. The reserve is in the basin of the Una River , which is fed by the Aliança and São Pedro rivers. The Serra River runs through the reserve from the west to the south east. The Maruim River forms the natural border of the north west of the reserve. The flora is a diverse example of Atlantic Forest biome. Fauna include three species of seriously threatened endemic primates:

406-402: A holoendemic is a cosmopolitan species. Stenoendemics, also known as local endemics, have a reduced distribution and are synonymous with the word 'endemics' in the traditional sense, whereas euryendemics have a larger distribution -both these have distributions that are more or less continuous. A rhoendemic has a disjunct distribution . Where this disjunct distribution is caused by vicariance, in

464-452: A large range but be rare throughout this range. The evolutionary history of a species can lead to endemism in multiple ways. Allopatric speciation , or geographic speciation, is when two populations of a species become geographically separated from each other and as a result develop into different species. In isolated areas where there is little possibility for organisms to disperse to new places, or to receive new gene flow from outside,

522-437: A limited range. Paleoendemism is more or less synonymous with the concept of a ' relict species ': a population or taxon of organisms that were more widespread or more diverse in the past. A 'relictual population' is a population that currently occurs in a restricted area, but whose original range was far wider during a previous geologic epoch . Similarly, a 'relictual taxon' is a taxon (e.g. species or other lineage) that

580-513: A much larger area, but died out in most of their range, are called paleoendemic , in contrast to neoendemic species, which are new species that have not dispersed beyond their range. The ginkgo tree, Ginkgo biloba , is one example of a paleoendemic species. In many cases biological factors, such as low rates of dispersal or returning to the spawning area ( philopatry ), can cause a particular group of organisms to have high speciation rates and thus many endemic species. For example, cichlids in

638-522: A name for. Traditionally, none of Myers and de Grave's categories would be considered endemics except stenoendemics. Some environments are particularly conducive to the development of endemic species, either because they allow the persistence of relict taxa that were extirpated elsewhere, or because they provide mechanisms for isolation and opportunities to fill new niches. Serpentine soils act as ' edaphic islands' of low fertility and these soils lead to high rates of endemism. These soils are found in

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696-465: A number of endemics. Many species and other higher taxonomic groups exist in very small terrestrial or aquatic islands, which restrict their distribution. The Devil's Hole pupfish, Cyprinodon diabolis , has its whole native population restricted to a spring that is 20 x 3 meters, in Nevada 's Mojave Desert . This 'aquatic island' is connected to an underground basin; however, the population present in

754-529: A species from being endemic. In theory, the term "endemic" could be applied on any scale; for example, the cougar is endemic to the Americas, and all known life is endemic to Earth. However, endemism is normally used only when a species has a relatively small or restricted range. This usage of "endemic" contrasts with "cosmopolitan." Endemics are not necessarily rare; some might be common where they occur. Likewise, not all rare species are endemics; some may have

812-504: A very restrictive range, due to the unique environmental characteristics. The Kula Volcano , one of the fourteen volcanoes in Turkey , is home to 13 endemic species of plants. Endemics might more easily become endangered or extinct because they are already restricted in distribution. This puts endemic plants and animals at greater risk than widespread species during the rapid climate change of this century. Some scientists claim that

870-625: A wide variety of evolutionary histories, so researchers often use more specialized terms that categorize endemic species based upon how they came to be endemic to an area. Different categorizations of endemism also capture the uniqueness and irreplaceability of biodiversity hotspots differently and impact how those hotspots are defined, affecting how resources for conservation are allocated. The first subcategories were first introduced by Claude P. E. Favager and Juliette Contandriopoulis in 1961: schizoendemics, apoendemics and patroendemics. Using this work, Ledyard Stebbins and Jack Major then introduced

928-437: A wider distributed taxon that has become reproductively isolated without becoming (potentially) genetically isolated – a schizoendemic has the same chromosome count as the parent taxon it evolved from. An apoendemic is a polyploid of the parent taxon (or taxa in the case of allopolyploids ), whereas a patroendemic has a lower, diploid chromosome count than the related, more widely distributed polyploid taxon. Mikio Ono coined

986-663: Is a South American forest that extends along the Atlantic coast of Brazil from Rio Grande do Norte state in the northeast to Rio Grande do Sul state in the south and inland as far as Paraguay and the Misiones Province of Argentina , where the region is known as Selva Misionera . The Atlantic Forest has ecoregions within the following biome categories: seasonal moist and dry broad-leaf tropical forests, tropical and subtropical grasslands, savannas, and shrublands , and mangrove forests . The Atlantic Forest

1044-435: Is active in reforestation efforts in the northeastern state of Pernambuco , Brazil. During 2007, Joao Milanez and Joanne Stanulonis have planted 5,500 new trees in the mountains commencing with Gravata, adding to the precious little, ancient forest left. The Pact for Atlantic Forest Restoration has assembled over 100 businesses, nongovernmental and governmental organizations around the goal of having 15 million hectares of

1102-529: Is characterized by a high biodiversity and endemism . It was the first environment that the Portuguese colonists encountered over 500 years ago, when it was thought to have had an area of 1,000,000–1,500,000 km (390,000–580,000 sq mi), and stretching an unknown distance inland, making it, back then, the second largest rainforest on the planet, only behind the Amazon rainforest . Over 85% of

1160-434: Is only possible where 1.) the taxonomy of the species in question is not in dispute; 2.) the species distribution is accurately known; and 3.) the species have relatively small distributional ranges. In a 2000 article, Myers et al . used the standard of having more than 0.5% of the world's plant species being endemic to the region to designate 25 geographical areas of the world as biodiversity hotspots . In response to

1218-484: Is predicted that many regional, fruit-bearing tree species in the Atlantic forest will become extinct due to failure of seedling recruitment and recolonisation. With all these species already threatened, it is predicted that with the persistence of current deforestation rates the Atlantic forest will see continued extinction of species. Due to the Atlantic Forest's vast diversity of endemic plants and animals as well as

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1276-618: Is the sole surviving representative of a formerly diverse group. The concept of phylogenetic endemism has also been used to measure the relative uniqueness of the species endemic to an area. In measurements that incorporate phylogenetic endemism, branches of the evolutionary tree are weighted by how narrowly they are distributed. This captures not only the total number of taxa endemic to the area (taxonomic endemism), but also how distant those species are from their living relatives. Schizoendemics, apoendemics and patroendemics can all be classified as types of neoendemics. Schizoendemics arise from

1334-451: Is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be endemic to that particular part of

1392-554: Is to fully preserve the biota and their natural attributes without direct human interference. Protected birds in the reserve include the Atlantic black-breasted woodpecker (Celeus tinnunculus), black-headed berryeater (Carpornis melanocephala), red-billed curassow (Crax blumenbachii), banded cotinga (Cotinga maculata), Stresemann's bristlefront (Merulaxis stresemanni), band-tailed antwren (Myrmotherula urosticta), ochre-marked parakeet (Pyrrhura cruentata) and striated softtail (Thripophaga macroura). Other protected species in

1450-719: The Critical Ecosystem Partnership Fund if they abide by its rules. These include the Species Protection Program, the Program for Supporting Private Natural Heritage Reserves and the Institutional Strengthening Program. Another strategy being implemented to maintain biodiversity within the Atlantic Forest is creating wildlife corridors . The World Bank is donating $ 44 million to create

1508-582: The Ethiopian Highlands , or large bodies of water far from other lakes, like Lake Baikal , can also have high rates of endemism. Endemism can also be created in areas which act as refuges for species during times of climate change like ice ages . These changes may have caused species to become repeatedly restricted to regions with unusually stable climate conditions, leading to high concentrations of endemic species in areas resistant to climate fluctuations. Endemic species that used to exist in

1566-486: The Pleistocene , the Atlantic Forest is known to have shrunk to extremely small fragmented refugia in highly sheltered gullies, being separated by areas of dry forest or semi-deserts known as caatingas. Some maps even suggest the forest actually survived in moist pockets well away from the coastline where its endemic rainforest species mixed with much cooler-climate species. Unlike refugia for equatorial rainforests,

1624-575: The Restinga de Bertioga State Park , a 9.3 thousand hectares park which also serves as a wildlife corridor linking the coastal regions to the Serra do Mar mountain range. Some organizations, such as the Nature Conservancy , are planning to restore parts of the forest that have been lost and to build corridors that are compatible with the lifestyles of the native people. The Amazon Institute

1682-426: The golden lion tamarin , black-tufted marmoset and golden-bellied capuchin . The environment has been damaged by deforestation, removal of riparian vegetation and cattle damage to the river banks causing more extreme flooding and greater levels of sediment in the water. This has had negative effects to the fauna. The Biological Reserve is a "strict nature reserve" under IUCN protected area category Ia. The purpose

1740-606: The Atlantic Forest. New species are continually being found in the Atlantic Forest. In fact, between 1990 and 2006 over a thousand new flowering plants were discovered. Furthermore, in 1990 researchers re-discovered a small population of the black-faced lion tamarin ( Leontopithecus caissara ), previously thought to have been extinct. In 1991, the butterfly Actinote zikani was rediscovered in southern Brazil, after being declared extinct ten years earlier. In southern Brazil A new species of blonde capuchin ( Cebus queirozi ), named for its distinguishing bright blonde hair,

1798-960: The Balkan Peninsula, Turkey, Alps, Cuba, New Caledonia, South Africa, Zimbabwe, the North American Appalachians, and scattered distribution in California, Oregon, and Washington and elsewhere. For example, Mayer and Soltis considered the widespread subspecies Streptanthus glandulosus subsp. glandulosus which grows on normal soils, to be a paleoendemic, whereas closely related endemic forms of S. glandulosus occurring on serpentine soil patches are neoendemics which recently evolved from subsp. glandulosus . Obligate cave-dwelling species, known as troglobites, are often endemic to small areas, even to single individual caves, because cave habitats are by nature restricted, isolated, and fragmented. A high level of adaptation to

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1856-571: The East African Rift Lakes have diversified into many more endemic species than the other fish families in the same lakes, possibly due to such factors. Plants that become endemic on isolated islands are often those which have a high rate of dispersal and are able to reach such islands by being dispersed by birds. While birds are less likely to be endemic to a region based on their ability to disperse via flight, there are over 2,500 species which are considered endemic, meaning that

1914-479: The English language as a loan word from French endémique , and originally seems to have been used in the sense of diseases that occur at a constant amount in a country, as opposed to epidemic diseases, which are exploding in cases. The word was used in biology in 1872 to mean a species restricted to a specific location by Charles Darwin . The less common term 'precinctive' has been used by some entomologists as

1972-546: The above, the World Wildlife Fund has split the world into a few hundred geographical ' ecoregions '. These have been designed to include as many species as possible that only occur in a single ecoregion, and these species are thus 'endemics' to these ecoregions. Since plenty of these ecoregions have a high prevalence of endemics existing within them, many National Parks have been formed around or within them to further promote conservation. The Caparaó National Park

2030-583: The concept. In their view, everything is endemic, even cosmopolitan species are endemic to Earth, and earlier definitions restricting endemics to specific locations are wrong. Thus the subdivisions neoendemics and paleoendemics are without merit regarding the study of distributions, because these concepts consider that an endemic has a distribution limited to one place. Instead, they propose four different categories: holoendemics, euryendemics, stenoendemics and rhoendemics. In their scheme cryptoendemics and euendemics are further subdivisions of rhoendemics. In their view,

2088-518: The concepts of neoendemics and paleoendemics in 1965 to describe the endemics of California. Endemic taxa can also be classified into autochthonous, allochthonous, taxonomic relicts and biogeographic relicts. Paleoendemism refers to species that were formerly widespread but are now restricted to a smaller area. Neoendemism refers to species that have recently arisen, such as through divergence and reproductive isolation or through hybridization and polyploidy in plants, and have not dispersed beyond

2146-609: The cool climates of mountain peaks are geographically isolated. For example, in the Alpes-Maritimes department of France, Saxifraga florulenta is an endemic plant that may have evolved in the Late Miocene and could have once been widespread across the Mediterranean Basin . Volcanoes also tend to harbor a number of endemic species. Plants on volcanoes tend to fill a specialized ecological niche , with

2204-484: The environment cause species to undergo range shifts (potentially expanding their range into a larger area, or becoming extirpated from an area they once lived), go extinct, or diversify into more species. The extreme opposite of an endemic species is one with a cosmopolitan distribution , having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to species (and other taxonomic levels) that are restricted to

2262-586: The equivalent of 'endemic'. Precinctive was coined in 1900 by David Sharp when describing the Hawaiian insects, as he was uncomfortable with the fact that the word ' endemic ' is often associated with diseases. 'Precinctive' was first used in botany by Vaughan MacCaughey in Hawaii in 1917. A species is considered to be endemic to the area where it is found naturally, to the exclusion of other areas; presence in captivity or botanical gardens does not disqualify

2320-591: The extent of human disturbances, including habitat destruction , in the Atlantic Forest has led to an extinction crisis. The endemic species in this region are especially vulnerable to extinction due to fragmentation because of their small geographic ranges and low occurrence. In a study of the Atlantic Forest fragments, community level biomass was reduced to 60% in plots less than 25 hectares. Key ecological processes such as seed dispersal , gene flow , colonization and other processes are disturbed by fragmentation. With many key vertebrate seed dispersers going extinct, it

2378-658: The fragmentation affecting these species, many groups and organizations are working to restore this unique ecosystem . Non-governmental organizations (NGO) are huge benefactors in Brazil, providing funding as well as professional help to the Atlantic Forest due to the Brazilian Environmental Movement . One organization, called BirdLife International , uses its research to preserve the area's bird biodiversity and teach people about sustainable natural resource use. Some organizations receive grants from

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2436-500: The original area has been deforested , threatening many plant and animal species with extinction . The Atlantic Forest region includes forests of several variations: The Atlantic Forest is unusual in that it extends as a true tropical rain forest to latitudes as far as 28°S. This is because the trade winds produce precipitation throughout the southern winter. In fact, the northern Zona da Mata of northeastern Brazil receives much more rainfall between May and August than during

2494-689: The original ecosystem restored by 2050. The Pontifícia Universidade Católica do Rio Grande do Sul keeps a private reserve of the Araucaria moist forest ecoregion of approximately 3.100 ha called Pró-Mata , near the city of São Francisco de Paula in the state of Rio Grande do Sul . This reserve is used for research and biodiversity conservation. Terrestrial ecoregions within the Atlantic Forest Biome include: 16°30′S 39°15′W  /  16.500°S 39.250°W  / -16.500; -39.250 Endemism Endemism

2552-677: The pool remains isolated. Other areas very similar to the Galapagos Islands of the Pacific Ocean exist and foster high rates of endemism. The Socotra Archipelago of Yemen, located in the Indian Ocean, has seen a new endemic species of parasitic leech, Myxobdella socotrensis, appear. This species is restricted to freshwater springs, where it may attach to and feed upon native crabs. Mountains can be seen as ' sky islands ': refugia of endemics because species that live in

2610-404: The presence of endemic species in an area is a good method to find geographical regions that can be considered priorities for conservation. Endemism can thus be studied as a proxy for measuring biodiversity of a region. The concept of finding endemic species that occur in the same region to designate 'endemism hotspots' was first proposed by Paul Müller in a 1973 book. According to him, this

2668-619: The rate of endemism is particularly high. For example, many endemic species are found on remote islands , such as Hawaii , the Galápagos Islands and Socotra . Populations on an island are isolated, with little opportunity to interbreed with outside populations, which eventually causes reproductive isolation and separation into different species. Darwin's finches in the Galápagos archipelago are examples of species endemic to islands. Similarly, isolated mountainous regions like

2726-447: The refuges for the Atlantic Forest have never been the product of detailed identification. Despite having only 28% of native vegetation cover remaining, the Atlantic Forest remains extraordinarily lush in biodiversity and endemic species , many of which are threatened with extinction . Approximately 40 percent of its vascular plants and up to 60 percent of its vertebrates are endemic species, meaning they are found nowhere else in

2784-508: The reserve include golden-headed lion tamarin (Leontopithecus chrysomelas), maned sloth (Bradypus torquatus), giant anteater (Myrmecophaga tridactyla), cougar (Puma concolor), Recife broad-nosed bat , Platyrrhinus recifinus, Hercules beetle (Dynastes hercules), the butterfly Napeogenes rhezia and the Characiformes fish Nematocharax venustus . Atlantic Forest The Atlantic Forest ( Portuguese : Mata Atlântica )

2842-673: The result of human activity in the past 400 years. Over 11,000 species of plants and animals are considered threatened today in the Atlantic Forest. Over 52% of the tree species and 92% of the amphibians are endemic to this area. The forest harbors around 20,000 species of plants, with almost 450 tree species being found in just one hectare in some locations. The Atlantic Forest is one of the best studied tropical ecosystems. For example, over 3000 tree species, 98 bat species, 94 large or medium-sized mammal species, over 2000 epiphyte species, 26 primate species, 528 amphibian species, 124 small mammal species, and over 800 bird species have been recorded in

2900-428: The size of the Atlantic Forest, which has resulted in species impoverishment. Almost 88% of the original forest habitat has been lost and replaced by human-modified landscapes including pastures , croplands , and urban areas . This deforestation continues at an annual rate of 0.5% and up to 2.9% in urban areas. Habitat fragmentation leads to a cascade of alterations of the original forest landscape. For example,

2958-419: The southern summer. The geographic range of Atlantic Forest vary depending on author or institution that published them. Information on four most important boundaries as well as their union and intersection was reviewed in 2018. The Atlantic Forest mainly covers regions of eastern Brazil (92% of the total area), but also reaches eastern Paraguay (6%) and northeastern Argentina (2%). During glacial periods in

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3016-484: The species is restricted to an area less than five million hectares (twelve million acres). Microorganisms were traditionally not believed to form endemics. The hypothesis 'everything is everywhere', first stated in Dutch by Lourens G.M. Baas Becking in 1934, describes the theory that the distribution of organisms smaller than 2 mm is cosmopolitan where habitats occur that support their growth. Endemism can reflect

3074-424: The term 'aneuendemics' in 1991 for species that have more or fewer chromosomes than their relatives due to aneuploidy . Pseudoendemics are taxa that have possibly recently evolved from a mutation. Holoendemics is a concept introduced by Richardson in 1978 to describe taxa that have remained endemic to a restricted distribution for a very long time. In a 2000 paper, Myers and de Grave further attempted to redefine

3132-572: The threatened nature of a geographic region. A similar pattern had been found regarding mammals, Lasioglossum bees, Plusiinae moths, and swallowtail butterflies in North America: these different groups of taxa did not correlate geographically with each other regarding endemism and species richness. Especially using mammals as flagship species proved to be a poor system of identifying and protecting areas of high invertebrate biodiversity. In response to this, other scientists again defended

3190-531: The world. An endemic species can also be referred to as an endemism or, in scientific literature, as an endemite . Similarly many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology , because it provides clues about how changes in

3248-443: The world. The official threatened species list of Brazil contains over 140 terrestrial mammal species found in Atlantic Forest. In Paraguay the Atlantic Forest has been heavily impacted in recent years. In Paraguay there are 35 species listed as threatened, and 22 species are listed as threatened in the interior portion of the Atlantic Forest of Argentina. Nearly 250 species of amphibians , birds, and mammals have become extinct due to

3306-499: Was discovered in northeastern Brazil at the Pernambuco Endemism Center in 2006. A species of endangered three-toed sloth, named the maned sloth ( Bradypus torquatus ) because of its long hair, is endemic to the Atlantic Forest. Hylid tree frog Dendropsophus branneri is also endemic to the Atlantic Forest. The incorporation of modern human societies and their needs for forest resources has greatly reduced

3364-449: Was formed in the Atlantic Forest , a biodiversity hotspot located in Brazil, in order to help protect valuable and vulnerable species. Other scientists have argued that endemism is not an appropriate measure of biodiversity, because the levels of threat or biodiversity are not actually correlated to areas of high endemism. When using bird species as an example, it was found that only 2.5% of biodiversity hotspots correlate with endemism and

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