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67-534: The Jamanxim National Forest is in the Amazon biome . It has an area of 1,301,683.04 hectares (3,216,528.8 acres). It was created by decree on 13 February 2006 and is administered by the Chico Mendes Institute for Biodiversity Conservation (ICMBio). It is contained in the municipality of Novo Progresso in the state of Pará. The forest consists of about 85% open rainforest and 14% dense rainforest. It

134-415: A given ecoregion are more similar to each other than to those of surrounding ecoregions and together form a conservation unit. Freshwater systems include rivers , streams , lakes , and wetlands . Freshwater ecoregions are distinct from terrestrial ecoregions, which identify biotic communities of the land, and marine ecoregions, which are biotic communities of the oceans. A map of Freshwater Ecoregions of

201-469: A holistic, "weight-of-evidence" approach where the importance of various factors may vary. An example of the algorithmic approach is Robert Bailey 's work for the U.S. Forest Service, which uses a hierarchical classification that first divides land areas into very large regions based on climatic factors, and subdivides these regions, based first on dominant potential vegetation, and then by geomorphology and soil characteristics. The weight-of-evidence approach

268-962: A large area of this habitat. Of the 1,149 federal and state protected areas in Brazil in 2014, 247 covering 1,100,000 square kilometres (420,000 sq mi) were in the Amazon biome and accounted for 73% of the total area protected at the federal and state levels in Brazil. Federal units covered 587,000 square kilometres (227,000 sq mi) and state units covered 523,000 square kilometres (202,000 sq mi). These included fully protected national and state parks (22%), ecological stations (9%), biological reserves (4%) and wildlife refuges as well as sustainable use national and state forests (26%), environmental protection areas (17%), extractive reserves (12%), sustainable development reserves (10%),and areas of ecological interest . More than 15,000 square kilometres (5,800 sq mi) of

335-517: A set of ecoregions identified by WWF whose conservation would achieve the goal of saving a broad diversity of the Earth's ecosystems, includes a number of areas highlighted for their freshwater biodiversity values. The Global 200 preceded Freshwater Ecoregions of the World and incorporated information from regional freshwater ecoregional assessments that had been completed at that time. Sources related to

402-666: A similar scope, where the Amazon biome includes the Guiana Shield rain forests in the north and the Chiquitano dry forests of Bolivia. The biome covers parts of Brazil, Bolivia, Peru, Ecuador, Colombia, Venezuela, Guyana, Suriname and French Guiana. In Brazil the biome covers more than 4,100,000 square kilometres (1,600,000 sq mi) and covers all or parts of the states of Acre , Amazonas , Roraima , Rondônia , Pará , Amapá , Maranhão , Tocantins and Mato Grosso . The Amazon biome covers 49.29% of Brazil. 16% of

469-407: A web application developed by Resolve and Google Earth Engine. An ecoregion is a "recurring pattern of ecosystems associated with characteristic combinations of soil and landform that characterise that region". Omernik (2004) elaborates on this by defining ecoregions as: "areas within which there is spatial coincidence in characteristics of geographical phenomena associated with differences in

536-547: Is an ecologically and geographically defined area that is smaller than a bioregion , which in turn is smaller than a biogeographic realm . Ecoregions cover relatively large areas of land or water, and contain characteristic, geographically distinct assemblages of natural communities and species . The biodiversity of flora , fauna and ecosystems that characterise an ecoregion tends to be distinct from that of other ecoregions. In theory, biodiversity or conservation ecoregions are relatively large areas of land or water where

603-426: Is analogous to that used for terrestrial ecoregions. Major habitat types are identified: polar, temperate shelves and seas, temperate upwelling, tropical upwelling, tropical coral, pelagic (trades and westerlies), abyssal, and hadal (ocean trench). These correspond to the terrestrial biomes . The Global 200 classification of marine ecoregions is not developed to the same level of detail and comprehensiveness as that of

670-517: Is carried by winds from the Atlantic, and the other half from evapotranspiration within the biome. There are wide variations in total rainfall and distribution of rainfall throughout the year. The Amazon watershed covers about 5,846,100 square kilometres (2,257,200 sq mi). The Amazon River accounts for 15–16% of the total water discharged by rivers into the oceans of the world. Rivers may be blackwater , whitewater or clearwater. Thus

737-536: Is distinguished as being completely treeless. The term "campinarana" is used for the transition between campina and the rainforest. Campinarana is found in isolated areas of the Rio Negro and Rio Branco basins in the north of Brazil. Patches of campinarana, which may cover several thousand square kilometres, are found in the transitional region from the Guyana Shield to the Amazon basin. Campinarana

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804-622: Is exemplified by James Omernik's work for the United States Environmental Protection Agency , subsequently adopted (with modification) for North America by the Commission for Environmental Cooperation . The intended purpose of ecoregion delineation may affect the method used. For example, the WWF ecoregions were developed to aid in biodiversity conservation planning, and place a greater emphasis than

871-650: Is in a region that contains 12 sustainable use conservation areas and 6 fully protected areas. The fully protected areas, which cover 6,670,422 hectares (16,482,970 acres), are the Amazônia , Jamanxim , Rio Novo and Serra do Pardo national parks, the Nascentes da Serra do Cachimbo Biological Reserve and the Terra do Meio Ecological Station . The sustainable use areas include the Tapajós environmental protection area and

938-413: Is open forest on sandy soil where sunlight can reach the ground. More than half the species of orchid in the Amazon lowlands are found in this type of forest. The terms campina and campinarana both describe white sand savannas that are very poor in nutrients. They may be flooded periodically or seasonally, in which case the roots suffer from lack of aeration. The vegetation is stunted. For some, campina

1005-526: Is optimal for all taxa. Ecoregions reflect the best compromise for as many taxa as possible. Secondly, ecoregion boundaries rarely form abrupt edges; rather, ecotones and mosaic habitats bound them. Thirdly, most ecoregions contain habitats that differ from their assigned biome . Biogeographic provinces may originate due to various barriers, including physical (plate tectonics, topographic highs), climatic (latitudinal variation, seasonal range) and ocean chemical related (salinity, oxygen levels). The history of

1072-917: Is similar to the Rio Negro Campinarana. The Northeastern Brazil restingas are coastal dune habitats that extend along the coast of northeastern Brazil, interspersed with lagoons, mangroves and patches of caatinga savanna. The land behind the dunes may include dwarf palms, bromeliads, ferns, shrubs, grasses and scrub trees. The more exposed areas mainly hold medium-tall grasses and scrub trees, while sheltered areas hold patches of cactus and low dry thicket. Fauna include marmosets and jaguarundis , proboscis bats , lesser sac-winged bats , bulldog bats , and Davy's naked-backed bats , wood stork , roseate spoonbill , white-necked heron , great egret , cattle egret , black-crowned night heron , and Neotropic cormorant . The ecoregion has various endemic species. The Lençóis Maranhenses National Park protects

1139-479: Is typically found on leached white sands around circular swampy depressions in lowland tropical moist forest. The soil is low in nutrients, with highly acidic humus. Campinarana includes savannah, scrub and forests. The savannah is mainly composed of grasses and lichens, found in the wet plains beside lakes and rivers. The scrub has bare sand, herbaceous plants, shrubs and trees less than 7 metres (23 ft) high. The nutrient-poor Japurá-Solimões-Negro moist forest

1206-454: The Altamira , Amaná , Jamanxim, Trairão , Itaituba I , Itaituba II and Tapajós national forests, covering a total of 7,555,889 hectares (18,671,010 acres). Amazon biome The Amazon biome ( Portuguese : Bioma Amazônia ) contains the Amazon rainforest , an area of tropical rainforest , and other ecoregions that cover most of the Amazon basin and some adjacent areas to

1273-608: The Himalayas and the Sahara . The boundaries of ecoregions are often not as decisive or well recognized, and are subject to greater disagreement. Ecoregions are classified by biome type, which are the major global plant communities determined by rainfall and climate. Forests, grasslands (including savanna and shrubland), and deserts (including xeric shrublands ) are distinguished by climate ( tropical and subtropical vs. temperate and boreal climates) and, for forests, by whether

1340-513: The Rio Negro ("Black River") has clear, jet-black water caused by decomposition of organic matter in swamps along its margins, combined with low levels of silt. The Rio Branco ("White River") and the Amazon itself have yellowish waters loaded with silt. The Tahuayo River in the Tamshiyacu Tahuayo Regional Conservation Area of Peru is classed as a blackwater river, but often has similar chemistry to

1407-548: The phosphorus necessary for life is blown by the wind from Africa; as diatomeous dust from the Bodélé Depression and as smoke due to biomass burning in Africa. There are wide regional variations in soil types. Thus 20% of the Rio Negro basin is covered by podzols and 55% by acrisols and ferralsols , with the remainder covered by alluvial and litholic soils and scattered areas of hydromorphic plinthosols . In

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1474-450: The "ecoregion" as a unit of analysis. The " Global 200 " is the list of ecoregions identified by WWF as priorities for conservation . Terrestrial ecoregions are land ecoregions, as distinct from freshwater and marine ecoregions. In this context, terrestrial is used to mean "of land" (soil and rock), rather than the more general sense "of Earth " (which includes land and oceans). WWF (World Wildlife Fund) ecologists currently divide

1541-454: The 1,300 bird species 20% are endemic and 8.4% are endangered. A relatively small area may contain a variety of ecoregions. Thus the Pico da Neblina National Park in the north of Amazonas, Brazil contains campinarana , dense rainforest and contact between campinarana and rainforest. The vegetation formations include terra firme forests and igapós . Submontane forests climb the first steps of

1608-421: The 53 ecosystems, of which 19 are forests with 77.5% of the area. The borders of the biome hold ecotones where it blends into other biomes such as the cerrado. Within and across the ecosystems of the biome there is huge biological diversity. One source says there are an estimated 60,000 plant species, of which 30,000 are endemic. Another says there are 30,000 to 50,000 plant species. The Brazilian Ministry of

1675-428: The 6,700,000 to 6,900,000 square kilometres (2,600,000 to 2,700,000 sq mi) Amazon biome. The somewhat vague numbers are because the rainforest merges into similar biomes across its boundaries. The rainforest is Tropical Broadleaf Forest , so-called because most of the trees have broad leaves. The basin also holds flooded riparian forest or várzea , seasonal forest and savanna . Seasonal forest covers much of

1742-601: The Amazon basin, but excludes areas of the Andes to the west and cerrado (savannah) to the south, and includes lands to the northeast extending to the Atlantic ocean with similar vegetation to the Amazon basin. J. J. Morrone (2006) defines the Amazonian subregion in this broader sense, divided into the biogeographical provinces of Guyana, Humid Guyana, Napo, Imeri, Roraima, Amapá, Várzea, Ucayali, Madeira, Tapajós-Xingu, Pará, Yungas and Pantanal. The World Wildlife Fund takes

1809-576: The Brazilian Amazon biome was deforested in 2008–12, of which only 6% took place within protected areas. 71% of federal and state protected areas in Brazil suffered no deforestation in this period. Although the World Economic Forum ranks Brazil first in the world in terms of nature tourism potential, the country is 52nd in tourism competitiveness when factors such as infrastructure are considered. Low public use, in part due to

1876-558: The Earth. The use of the term ecoregion is an outgrowth of a surge of interest in ecosystems and their functioning. In particular, there is awareness of issues relating to spatial scale in the study and management of landscapes . It is widely recognized that interlinked ecosystems combine to form a whole that is "greater than the sum of its parts". There are many attempts to respond to ecosystems in an integrated way to achieve "multi-functional" landscapes, and various interest groups from agricultural researchers to conservationists are using

1943-470: The Environment as of January 2013 listed 2,500 species of trees and 30,000 species of plants. There are 1,400 species of fish, 163 amphibians, 387 reptiles and more than 500 mammals including 90 primates. 87% of the amphibians, 62% of reptiles, 20% of birds and 25% of mammals are endemic to the biome. 109 species of lizards and amphisbaena reptiles are known to be present, and 138 species of snakes. Of

2010-745: The Guiana Plateau to about 1,000 metres (3,300 ft), followed by montane forests. Lichens and bromeliads are found up to 2,000 metres (6,600 ft). There is also alpine tundra in the tabular plateaus. The Amazon basin contains several large areas of moist forest, collectively called the Amazon rainforest. These are the Caquetá , Japurá–Solimões–Negro , Juruá–Purus , Madeira–Tapajós , Napo , Purus–Madeira , Solimões–Japurá , Southwest Amazon , Tapajós–Xingu , Tocantins–Araguaia–Maranhão , Uatuma–Trombetas , Ucayali , and Xingu–Tocantins–Araguaia moist forests. Each has distinctive vegetation. In

2077-622: The Gurupa Arch to the west of Marajó . Under the Paleoarch model, paleobasins between the arches form centers for biological diversification. Thus the Iquitos arch is considered the main reason for the different species of frogs and rodents and different forest types on either side of the ridge. The soil is generally very poor in nutrients, and areas that have been deforested are often unsuitable for agriculture or pasture. A large part of

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2144-552: The Omernik or Bailey systems on floral and faunal differences between regions. The WWF classification defines an ecoregion as: A large area of land or water that contains a geographically distinct assemblage of natural communities that: According to WWF, the boundaries of an ecoregion approximate the original extent of the natural communities prior to any major recent disruptions or changes. WWF has identified 867 terrestrial ecoregions, and approximately 450 freshwater ecoregions across

2211-502: The Tapajós, while the white-nosed saki ( Chiropotes albinasus ) is only found east of the river. The World Wildlife Fund divides the biome into ecoregions , often defined as the regions lying between major tributaries of the Amazon. Most of the interior of the Amazon basin is covered by rainforest. The dense tropical Amazon rainforest is the largest tropical rainforest in the world. It covers between 5,500,000 and 6,200,000 square kilometres (2,100,000 and 2,400,000 sq mi) of

2278-571: The WWF concept prioritizes biogeography, that is, the distribution of distinct species assemblages. In 2017, an updated terrestrial ecoregions dataset was released in the paper "An Ecoregion-Based Approach to Protecting Half the Terrestrial Realm" led by E. Dinerstein with 48 co-authors. Using recent advances in satellite imagery the ecoregion perimeters were refined and the total number reduced to 846 (and later 844), which can be explored on

2345-523: The World (TEOW), led by D. Olsen, E. Dinerstein, E. Wikramanayake, and N. Burgess. While the two approaches are related, the Bailey ecoregions (nested in four levels) give more importance to ecological criteria and climate zones, while the WWF ecoregions give more importance to biogeography, that is, the distribution of distinct species assemblages. The TEOW framework originally delineated 867 terrestrial ecoregions nested into 14 major biomes, contained with

2412-783: The World, released in 2008, has 426 ecoregions covering virtually the entire non-marine surface of the earth. World Wildlife Fund (WWF) identifies twelve major habitat types of freshwater ecoregions: Large lakes, large river deltas, polar freshwaters, montane freshwaters, temperate coastal rivers, temperate floodplain rivers and wetlands, temperate upland rivers, tropical and subtropical coastal rivers, tropical and subtropical floodplain rivers and wetlands, tropical and subtropical upland rivers, xeric freshwaters and endorheic basins, and oceanic islands. The freshwater major habitat types reflect groupings of ecoregions with similar biological, chemical, and physical characteristics and are roughly equivalent to biomes for terrestrial systems. The Global 200 ,

2479-480: The authors was to support global biodiversity conservation by providing a "fourfold increase in resolution over that of the 198 biotic provinces of Dasmann (1974) and the 193 units of Udvardy (1975)." In 2007, a comparable set of Marine Ecoregions of the World (MEOW) was published, led by M. Spalding, and in 2008 a set of Freshwater Ecoregions of the World (FEOW) was published, led by R. Abell. Bailey's ecoregion concept prioritizes ecological criteria and climate, while

2546-430: The biome as a whole podzols cover just 136,000 square kilometres (53,000 sq mi), or 2.7% of the area. In Brazil the average temperature of the biome is 22 to 26 °C (72 to 79 °F) and average rainfall is 2,300 millimetres (91 in), but there are wide variations from one region to another. The biome as a whole has annual rainfall from 1,500 to 3,000 millimetres (59 to 118 in), about half of which

2613-456: The biome is in Peru. As of 2015 about 23.4% of Peru's Amazon biome was protected, but of this less than half was fully protected. Much of the terrain of the Amazon biome, particularly around the rivers, is lowland plains. The Guiana Shield is an area of highlands along the border between Brazil and Venezuela and Guyana. The southern Amazonian highlands cross parts of Rondonia and Mato Grosso and

2680-800: The broad definition favored by the World Wide Fund for Nature (WWF) the Amazon biome would also include the Tepuis , table-top mountains with unique vegetation, the Negro-Branco , Guianan Highlands , Guianan piedmont and lowland and Guianan moist forests and the Guianan savanna . In the southwest Amazon at least 161,500 square kilometres (62,400 sq mi) of forest are dominated by bamboos . These occur in areas where there has been recent tectonic uplift combined with fast mechanical erosion and poor drainage. In each patch of bamboos all

2747-677: The broad latitudinal divisions of polar, temperate, and tropical seas, with subdivisions based on ocean basins (except for the southern hemisphere temperate oceans, which are based on continents). Major marine biogeographic realms, analogous to the eight terrestrial biogeographic realms , represent large regions of the ocean basins: Arctic , Temperate Northern Atlantic , Temperate Northern Pacific , Tropical Atlantic , Western Indo-Pacific , Central Indo-Pacific , Eastern Indo-Pacific , Tropical Eastern Pacific , Temperate South America , Temperate Southern Africa , Temperate Australasia , and Southern Ocean . A similar system of identifying areas of

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2814-401: The delineation of ecoregions an imperfect science. Another complication is that environmental conditions across an ecoregion boundary may change very gradually, e.g. the prairie-forest transition in the midwestern United States, making it difficult to identify an exact dividing boundary. Such transition zones are called ecotones . Ecoregions can be categorized using an algorithmic approach or

2881-405: The early 1970s, the term 'ecoregion' was introduced (short for ecological region), and R.G. Bailey published the first comprehensive map of U.S. ecoregions in 1976. The term was used widely in scholarly literature in the 1980s and 1990s, and in 2001 scientists at the U.S. conservation organization World Wildlife Fund (WWF) codified and published the first global-scale map of Terrestrial Ecoregions of

2948-654: The forest lost 60 square kilometres (23 sq mi) of coverage, with 18.8 square kilometres (7.3 sq mi) removed in June 2009 alone. About 12% of the forest area had been cleared, with about half the land abandoned rather than converted to agricultural use. IBAMA had arranged for the National Supply Company (Conab) to remove 6,000 head of cattle from the forest, and another 15,000 were to be removed. Weapons, chainsaws, fuel, tractors and other equipment had also been seized by IBAMA. Proposals to reduce

3015-436: The government to move to the area in the 1970s, but had not been given any land title and therefore were not entitled to compensation. In August 2009 senator Flexa Ribeiro said that under a draft agreement between ICMBio and the inhabitants of the national forest there would be no fines for deforestation before November 2007. In 2009 deforestation and burning was continuing at a rapid rate in previously untouched areas. That year

3082-624: The inaccessibility of the Amazon national and federal parks, mean that they fail to support the local economies and therefore lack support from society, especially the local communities. The national and state forests have low levels of formal sustainable logging contracts, the Tapajós National Forest in Pará being an exception. Brazil has strong systems for monitoring land cover and deforestation, but as of 2014 64% of managers of protected areas said they had not monitored biodiversity in

3149-501: The land surface of the Earth into eight biogeographical realms containing 867 smaller terrestrial ecoregions (see list ). The WWF effort is a synthesis of many previous efforts to define and classify ecoregions. The eight realms follow the major floral and faunal boundaries, identified by botanists and zoologists, that separate the world's major plant and animal communities. Realm boundaries generally follow continental boundaries, or major barriers to plant and animal distribution, like

3216-474: The local people and many scientists called the permanently waterlogged swamp on the lower Amazon " igapó " and all types of periodically flooded land " várzea ". A more recent definition, from Prance, is: Major flooded areas include the Iquitos , Purus , Monte Alegre , Gurupa and Marajó várzeas. The Majaró várzea is at the mouth of the Amazon and is affected by both freshwater and tidal flows. Campina

3283-433: The north and east. The biome contains blackwater and whitewater flooded forest, lowland and montane terra firma forest , bamboo and palm forest, savanna, sandy heath and alpine tundra. Some areas of the biome are threatened by deforestation for timber and to make way for pasture or soybean plantations. The Amazon biome has an area of 6,700,000 square kilometres (2,600,000 sq mi). The biome roughly corresponds to

3350-472: The oceans for conservation purposes is the system of large marine ecosystems (LMEs), developed by the US National Oceanic and Atmospheric Administration (NOAA). A freshwater ecoregion is a large area encompassing one or more freshwater systems that contains a distinct assemblage of natural freshwater communities and species. The freshwater species, dynamics, and environmental conditions within

3417-462: The plants flower every 27–28 years, producing huge numbers of seeds, before dying. The Chandless State Park is in the centre of the bamboo forest region of the south western Amazon biome, and has three endemic species of the Guadua genus of bamboo. Vegetation is classified as forest with palms, forest with bamboo, alluvial forest with bamboo and dense forest. Before Ghillean Prance 's 1979 study,

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3484-472: The previous five years, and more than half said they did not have tools to monitor social and environmental development. The " Arc of Deforestation " is in the eastern and southern borders of the biome. As of 2006 about 16% of the Amazon biome in Brazil had been deforested. Satellite images show that in the 2006–11 period total deforestation in the Amazon biome was 45,100 square kilometres (17,400 sq mi), of which 34,700 hectares (86,000 acres) were in

3551-430: The probability of encountering different species and communities at any given point remains relatively constant, within an acceptable range of variation (largely undefined at this point). Ecoregions are also known as "ecozones" ("ecological zones"), although that term may also refer to biogeographic realms . Three caveats are appropriate for all bio-geographic mapping approaches. Firstly, no single bio-geographic framework

3618-551: The properties produced 78.09% of the crop in the cerrado biome, while 37.45% produced 21.91% of the crop in the Amazon biome. In 2000 the Brazilian government banned creation of sugarcane plantations in the Amazon biome. In 2010 a presidential decree made low-interest credit available to oil palm development, but only on land that had been deforested before 2008. This may prove an environmentally sustainable economic solution. Ecoregion An ecoregion ( ecological region )

3685-415: The quality, health, and integrity of ecosystems ". "Characteristics of geographical phenomena" may include geology , physiography , vegetation, climate, hydrology , terrestrial and aquatic fauna , and soils, and may or may not include the impacts of human activity (e.g. land use patterns, vegetation changes). There is significant, but not absolute, spatial correlation among these characteristics, making

3752-707: The settlers, but the farmers associations wanted 415,000 hectares (1,030,000 acres). The dispute was ongoing in February 2015 after failure of negotiations before the Brazilian general election of October 2014 . In July 2015 ICMBio reported that it had seized 850 recently felled logs detected by the Real Time Deforestation Detection System (DETER) of the National Institute for Space Research (INPE}. The national forest

3819-584: The size of the forest have been made by local companies and state politicians. Some parts of the national forest are heavily populated, with pineapple plantations and farms growing crops and raising pigs, chickens and cattle. Representatives of the settlers challenged the legality of the creation of the national forest, on the grounds that the law called for participation of local people in creation, deployment and management of conservation units through preliminary technical studies and public consultations. ICMBio had proposed allocating 250,000 hectares (620,000 acres) to

3886-524: The southeast border, with marked dry seasons when there are frequent fires. The Amazon biome contains areas of other types of vegetation including grasslands, swamps, bamboos, and palm forests. There are 53 major ecosystems and more than 600 types of land and freshwater habitat . Of the ecosystems, 34 are forest areas covering 78% of the biome, 6 are Andean covering 1.5%, 5 are floodplains covering 5.83%, 5 are savanna covering 12.75% and two are tropical steppes covering 1.89%. The Brazilian Amazon holds 30 of

3953-698: The southern parts of Amazonas and Para. The Amazon basin is crossed by ridges or "paleoarches" that connect the Guiana and Central Brazil shields and divide it into geological sub-basins. They are the Iquitos or Jutai Arch in Peru and Acre , the Carauari Arch across the Rio Negro and Solimões , the Purus Arch to the west of Manaus , the Monte Alegre Arch to the west of the Tapajós and

4020-617: The soybean farms in the Amazonia Legal mostly occupy cerrado areas, not the Amazon biome. A statement by Cargill in 2006 said, "Soy occupies less than 0.6 percent of the land in the Amazon biome today, and most of that soy is grown on the fringes of the Amazon biome in the transitional area between the Cerrado and the forest. A 2010 assessment of soybean farmers associated with the Grupo André Maggi found that 62.55% of

4087-408: The term is somewhat vague. It has been used in many contexts: forest classifications (Loucks, 1962), biome classifications (Bailey, 1976, 2014), biogeographic classifications ( WWF / Global 200 scheme of Olson & Dinerstein, 1998), etc. The phrase "ecological region" was widely used throughout the 20th century by biologists and zoologists to define specific geographic areas in research. In

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4154-454: The terrestrial ecoregions; only the priority conservation areas are listed. See Global 200 Marine ecoregions for a full list of marine ecoregions. In 2007, TNC and WWF refined and expanded this scheme to provide a system of comprehensive near shore (to 200 meters depth) Marine Ecoregions of the World (MEOW). The 232 individual marine ecoregions are grouped into 62 marine provinces , which in turn group into 12 marine realms , which represent

4221-581: The three soy-producing states of Mato Grosso, Para and Rondonia. A 2009 survey showed that of 620 recently deforested areas 203, or 32%, had been converted to pasture while 12, or less than 1%, were being used for soybeans. The biome is not the same as the Amazônia Legal , which covers a larger area of Brazil. The Amazon biome covers about 82% of the Legal Amazon if cerrado and campinarana are excluded. Defenders of soybean farming point out that

4288-913: The trees are predominantly conifers ( gymnosperms ), or whether they are predominantly broadleaf ( Angiosperms ) and mixed (broadleaf and conifer). Biome types like Mediterranean forests, woodlands, and scrub ; tundra ; and mangroves host very distinct ecological communities, and are recognized as distinct biome types as well. Marine ecoregions are: "Areas of relatively homogeneous species composition , clearly distinct from adjacent systems….In ecological terms, these are strongly cohesive units, sufficiently large to encompass ecological or life history processes for most sedentary species." They have been defined by The Nature Conservancy (TNC) and World Wildlife Fund (WWF) to aid in conservation activities for marine ecosystems . Forty-three priority marine ecoregions were delineated as part of WWF's Global 200 efforts. The scheme used to designate and classify marine ecoregions

4355-517: The whitewater rivers of the region since it is in the Amazon River floodplain, and receives water from the Amazon. The Amazon and its major tributaries such as the Xingu , Tapajós , Madeira , Purus and Rio Negro form barriers to the geodispersal of plants, animals and even insects. Thus the white-fronted capuchin ( Cebus albifrons ) and hairy saki ( Pithecia hirsuta ) are found west of

4422-491: The world's 8 major biogeographical realms. Subsequent regional papers by the co-authors covering Africa, Indo-Pacific, and Latin America differentiate between ecoregions and bioregions, referring to the latter as "geographic clusters of ecoregions that may span several habitat types, but have strong biogeographic affinities, particularly at taxonomic levels higher than the species level (genus, family)". The specific goal of

4489-637: Was created in the context of land planning in the area influenced by the BR-163 highway, with the objective of slowing deforestation in one of the areas with the highest rates of Amazon forest clearance. The Jamanxim National Forest is classed as IUCN protected area category VI (protected area with sustainable use of natural resources) with the objective of sustainable multiple use of forest resources, maintenance and protection of water resources and biodiversity, and supporting sustainable exploitation of natural resources . Almost 1,000 families had been encouraged by

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