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arctic tundra biodiversity

The buried organic-rich layer, as shown at the 24- to 26-inch depth, usually has an age of 800011000years bp, which puts the time of burial within the Hypsithermal Interval. Interesting note: There is new exciting research looking into the possibility of restoring large herds of animals to help slow melting in the arctic tundra. There are very few year-round resident vertebrates in the Arctic. The arctic tundra is found almost entirely in the Northern Hemisphere, from 60 to 70 degrees latitude North. If you have a pair of headsets, put them on now. The boreal tundra woodland ecological zone (10 million km2), which is about one-half forested, spans a range of woody plant densities from shrub tundra to woodland.

In the case of mammals and birds, such as polar bears (Ursus maritimus), arctic foxes (Vulpes lagopus), muskoxen (Ovibos moschatus) and more, some of the strategies are the same. Domestic livestock breeds adapted to cooler environments are also present in various arctic or alpine tundra communities of the world (e.g., cattle, sheep, goats, horses, llamas, and yak).

We treat alpine tundra biomes in their own section, here. Both Nenets languages are endangered, but in the areas where the languages remain vigorous, oral literature and the traditional way of life are also flourishing.

The arctic tundra is truly an incredible ecosystem with unique plants and animals that are very vulnerable to our actions, and whose future depends on us. In many instances the material is nearly clear ice. fish arctic cod ocean saida cods ice fishes sea species carnivores arcodiv

This is a big way you can help, through individual choices and by encouraging your government to make greener policy choices.

In addition to these issues, plants need to stay warm.

Lack of food and higher competition can also lead them to more often search for food in towns, causing human-animal conflict, which can sometimes result in the animal having to be euthanized, if relocation does not work the first time.

In contrast, tropical alpine tundra communities of Africa, South America, and Oceania exist in conditions of freezing or near-freezing temperatures each night, with daytime temperatures allowing for active plant growth throughout the year.

Questions? As forests expand into tundra during permafrost thaw, detrital inputs to soil may increase, but changes in SOC may occur in either direction (Hartley etal., 2012; Parker etal., 2015; Steltzer, 2004). stream Many bird species and some mammals migrate to the tundra during the brief summer. Tundra plants are highly adapted to survive harsh conditions: the very short growing season, low summer temperatures, brutally cold winters, and lack of moisture. This truly fascinating region can seem lifeless at first, yet, despite its challenges, it hosts a diverse and unique range of organisms.

Interestingly, dry air and driving winds also makes for plants that have similar adaptations to those in the desert, such as thick waxy leaves that prevent water loss. tundra biome biomes arctic The nighttime temperature is usually below freezing.

(Read more on the mosquito and its life cycle here). J Tedrow. As discussed above, atmospheric circulation patterns bring air pollution from lower latitudes, and the pollutants tend to concentrate in polar-regions.

This permafrost does a few key things: (1) it prevents the growth of large trees, because they can not put their roots deep into the ground; (2) The melting of its top layer provides much of the water in the ecosystem and creates the ponds and wetlands throughout the landscape; (3) it prevents the draining of water, which causes the water-logged soils mentioned above; (4) it stores large amounts of carbon, methane and other gases. Due to this, most birds that are migrants are monogamous, meaning that they mate with the same individual for life, and both parents help to raise and feed the chicks, as their food demand is very high to allow for this rapid growth. The water does not soak into the ground because the permafrost blocks it.

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not only put on thicker fur for the winter, they also change the color from dark browns to white, and vice versa, to better help them camouflage, no matter the season. 6I- ~_MqfzL6dEd> "Y7~5 L=&X9W--'r8_r}vRgOnNmj o@4)+QE/wY~uPZ+>ERY Zke"0r?=YH-K3N[)!wI?PV!Haf"rd_Q[9C( Governments, corporations, and individuals are becoming more conscious about their greenhouse gas emissions and are making changes though we still have a long way to go. The horizon varies from frozen mineral soil to ground ice. From left: tundra near Churchill, Manitoba, Canada; tundra in the Arctic National Wildlife Refuge, Alaska.

and can go all the way down to 450 meters (~1475 ft) below the surface. J. Boone Kauffman, David A. Pyke, in Encyclopedia of Biodiversity (Second Edition), 2001. A curious fact about lemmings is that they have large cycles in their populations, over 3-4 years, where they experience large spikes and drops in the population. C, dark gray (2.5Y 4/0) silt loam, mottled, very wet. . For example, in Alaska USA parts of a pipeline have been built raised-up to allow passage of caribou herds.

As well, a notable drop in lichen is one of the reasons caribou numbers are dropping.

%sh]]Uo)g8z{%m4ZowZa.(wTrBL{;]+GiR$A -@=n!-I # Z J x~n1cqIlBlmy6ChDh&tM? The arctic is known for its cold, desert-like conditions. from The Wild on how these squirrels are being studied in order to look at helping humans hibernate during space travel. This truly fascinating region can seem lifeless at first, yet, despite its challenges, it hosts a diverse and unique range of organisms.

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As in the boreal zone, the flora of eastern polar Siberia is richer than that of western Siberia due to its lack of Pleistocene glaciation. There are even some plants that are able to store energy in their roots during the growing season to maintain them, or even to grow, underneath the snow in winter.

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Lichens and mosses for example are able to grow on rock and absorb water out of the air. There is also a population of non-traditional peoples that live here. The original biomes pages were created in fall 1996 by the Biomes Group, Biology 1B class, section 115, at UC Berkeley; all were reformatted, with many new photos added, in March, 2007. In high mountains, tundra-like ecosystems occur above the alpine treeline and are generally called alpine tundra.

This article was revised and written primarily by Kirstynn Joseph, Designed by Elegant Themes | Powered by WordPress, is believed to come from the Finnish word, which refers to a treeless plain.

Additionally, these increased temperatures are vastly changing the plant communities which impacts the already delicate balance of this harsh ecosystem. Examples of migrating birds are Snow Geese (, Each and every one of these migrations are impressive, for example, 5 million snow geese come to the arctic tundra to breed in spring from the Gulf of Mexico, a 3 month long journey, and the peregrine falcon can come all the way from South America, but the largest yearly migration is undertaken by the arctic tern which spends some of the year in The Arctic and the other in The Antarctic (, Since the arctic tundra has such a harsh climate, there is also a very low number of people that live there, less than 4 million. Figure 6.

Usually very wet, but loose and friable when dried. Unless noted, content on these pages have not been updated. XrEl.j soqBGOR%:^:F*Gcf^"C 2}`v'm\8bTFVqV9&|Z99Jk3LDawqAnzosV/.3 Pollen from these buried layers is generally rich in Ericaceae, Cyperaceae, Betula, and Salix.

The few resident birds, such as rock ptarmigan (Lagopus muta) and willow ptarmigan (Lagopus lagopus), burrow under the snow in winter, thus avoiding the deathly cold air temperatures at the surface. These animals are much more active and mainly reproduce in the summer, while in winter they make intricate burrows beneath the snow, where it is warmer, and live among the roots of the largely dormant vegetation.

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There are also similar habitats in the southern hemisphere, found on isolated islands off the coast of Antarctica and the Antarctic Peninsula, but note that not everyone considers this true Arctic Tundra because it is in the south.

University of California Museum of Paleontology, Home | Online exhibits | The world's biomes. A, dark brown to black organic matter, consisting of partially decomposed sedges, sphagnum, and heaths. In contrast to this ambiguity, it is clear that N inputs have positive effects on SOC. As well, the patchy water logged versus rocky-dry areas make it so plants either need to be able to survive in lots of water, or with little water. Figure 1. The morphology of herbaceous plants are often cushion or rosette growth forms and lichens are usually a foliose form. From: Reference Module in Earth Systems and Environmental Sciences, 2016, R. Harmsen, in Encyclopedia of Ecology, 2008. Both plants and animals show adaptations to extreme cold, short-growing seasons, and other aspects of the tundra climate and geomorphology.

There are also more and more people moving into the north, especially with better and better technology making it easier to live here, even in the difficult winters. These fish are able to survive in the very cold, and oxygen-poor, water underneath the ice in the winter. Most plants of the tundra can grow very quickly in a short amount of time.

Another interesting characteristic of a few tundra animals is the changing of their fur coats between summer and winter. The UCMP is primarily a research museum and our collections are only open to the public during our annual open house on Cal Day. Between the harsh climate, short growing seasons (50-60 days), and poor soil conditions, the arctic tundra is a difficult biome for plants to grow.

The pages were re-designed in 2019 as part of a general UCMP website overhaul. Voice: (510) 642-1821 Clay minerals in Tundra (Molliturbel) soil generally consist of illite and kaolinite.

A variety of soils are now recognized within the tundra zone, including the mineral soils that have impeded drainage. A layer of permanently frozen subsoil called permafrost exists, consisting mostly of gravel and finer material. Many animals hibernate during the winter because food is not abundant. What adaptations do arctic tundra migratory animals have to allow them to travel such great distances so often?

Read more here or see the research paper here. Despite this, various native tribes have called the tundra their home for a long time.

We must protect this region so that future generations can enjoy its beauty, and so that the people that live here can continue their traditional way of life.

Rock ptarmigans feed on buds and other exposed plant material, rodents on roots and other plant parts under the snow, while muskoxen and caribou (Rangifer tarandus) use sharp powerful hooves to dig into snow and ice and feed on the buried grasses, shrubs and lichen. |Log in, Energy and nutrients in the form of dead organic material, low shrubs, sedges, reindeer mosses, liverworts, and grasses, Herbivorous mammals: lemmings, voles, caribou, arctic hares and squirrels, Carnivorous mammals: arctic foxes, wolves, and polar bears, Migratory birds: ravens, snow buntings, falcons, loons, sandpipers, terns, snow birds, and various species of gulls, Insects: mosquitoes, flies, moths, grasshoppers, blackflies and arctic bumble bees, tussock grasses, dwarf trees, small-leafed shrubs, and heaths, Mammals: pikas, marmots, mountain goats, sheep, elk, Insects: springtails, beetles, grasshoppers, butterflies.

Many times, these animals arrive exhausted and almost starving, but they do arrive. 76-}

20 0 obj KplDHfED]Int&LH>^5FD'eTZ*=*KZSmL2\}WpuB WAfsVMF|zh Bk}3~/-5Kq ?/xXrx`5(;/Yd:mVL-/+,S `VYkKe=fb'I:--cwvT>p"UO?_)DFe6=kf&}VfXK?K>J6+|+og6$>*1N8|fRGc'z y%vt{$>A3%1m\+nBuZ,s$]w,f#G"Uk@DA)b@0drH#L: \+ ["`qo For example, Canada now has 8 separate national parks within the arctic tundra and many other countries have done the same.

Life here is very interesting because it continually experiences freezing and thawing between the seasons. On the other hand, where the soils from on acid bedrock such as a granite, a Podzol-like (Spodic Psammoturbel) soil may develop. Lemmings exhibit different seasonal patterns of use within various parts of their habitats.

Throughout history, the arctic tundra has been considered a carbon sink, meaning that more carbon is trapped here than released.

As luck would have it, we actually run a 3 day Winter Survival Course that we call Snow Camp in northern Wisconsin every year if you would like to learn how to survive in the Frozen North! In mountains, two additional types can be identified. Additionally, unlike similar species to the south, many black flies and mosquitos here do not require a blood meal to lay their eggs. They have very round builds, which means less surface area to lose heat, short ears and tails, very thick insulating fur/feathers, feet that are wide (also with thick fur/feathers) that help them walk on the snow, and the ability to create fat stores in summer to help them last through, and stay warm during, the winter.

Throughout history, the arctic tundra has been considered a carbon sink, meaning that more carbon is trapped here than released.

Many flowering plants bud the moment the snow has melted.

Weakly acid to calcareous, depending upon parent material. Some animals, such as the arctic ground squirrel (. Species that normally live further south are encroaching into the habitat of tundra animals, causing new competition and difficulties for these animals, many of which already have low populations or are considered species at risk.

On a relative scale, the arctic tundra biome has low biodiversity, especially if you compare it to somewhere like the tropical rainforest.

This creates small communities of distinct plants dotted throughout the landscape.

Lemmings (Dicrostonyx spp. Likewise, many tundra insects live multiple years, unlike their counterparts in more temperate regions. There are about 1,700 kinds of plants in the arctic and subarctic, and these include: All of the plants are adapted to sweeping winds and disturbances of the soil.

Have any problems using the site? Many more localized species usually occur.

The mosquito of the arctic tundra actually has an antifreeze compound in their bodies that helps them resist freezing. Low soil temperatures in the active layer also slow the breakdown of pollutants, keeping them toxic to plants for decades or perhaps centuries after the initial contamination. Two other prominent features of the polar zone are the prevalence of permafrost and substrates divided into stone polygons by frost action. The extreme conditions of the arctic tundra biome lead to large fluxes in animal populations, seasonally and even through the years. Alpine tundra photos, from left: Gladys Lucille Smith 2000 California Academy of Sciences; U.S. Other rodents, such as voles (family Cricetidae) and lemmings (tribe Lemmini) stay awake during the winter. Note: do not forget that fungi and microbes are also super important parts of the ecosystem, especially for helping to cycle nutrients! Rock ptarmigans feed on buds and other exposed plant material, rodents on roots and other plant parts under the snow, while muskoxen and caribou (. This is a huge factor for what is able to survive here. For example, the Inuit peoples in Canada and Greenland (which consists of various distinct tribes), the Yupik, in Alaska, as well as Saami in Northern Europe, only to name very few of the distinct groups that call the tundra their home. It is not intended to provide medical or other professional advice. Table11.12.

F. Ackerman, T. Salminen, in Encyclopedia of Language & Linguistics (Second Edition), 2006.

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(or taiga). Some special cases of high levels of adaptation are presented. The tundra zone is characterized by a preponderance of hydric mineral soils. Nominals distinguish seven cases and three numbers; dual number nominals in local cases are expressed periphrastically. In the winter these pools freeze and the cycle repeats itself. Primarily living via resource extraction and tourism. One is the snow valleys (Schneetlchen), depressions with deep snow accumulations which have shorter snow-free seasons and specialized floras composed of plants which can complete their life cycles in periods as short as one month in summer.

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),, biting midges (Family Ceratopogonidae) AKA no-see-ums, and more. <> Other birds, such as ptarmigan, overwinter near the polar zone. A feature affecting both consonants and vowels is palatalizatin. New article by N. Van Vranken & C. Boyd, 08/19/21. Well as plant material grows, it takes in carbon, and because of low decomposition rates and permafrost, when plant material dies here it doesnt break down and release that carbon back into the atmosphere, instead it becomes buried in layers and stays trapped. Yearly precipitation, including melting snow, is 15 to 25 cm (6 to 10 inches). The basic word order is SOV, but any focused element can occur pre-verbally. Grizzly bears (Ursus arctos) hibernate through the arctic winter, while polar bears (Ursus maritimus) go out on the sea ice to hunt seals through the winter months, then hibernate on land during the summer. Examples of migrating birds are Snow Geese (Chen caerulescens), Barnacle Geese (Branta leucopsis), various shore birds, arctic terns (Sterna paradisaea) and even the peregrine falcon (Falco peregrinus), only to name a few. Also, liquid water is available for only short periods at a time, thus making these ecosystems effectively polar deserts. Due to these harsh climatic conditions and brief growing season (usually less than 60 days), plant growth and decomposition is slow and ecosystems are very slow to recover from disturbance. The combination of low temperatures and sunlight hours results in a growing season that is only about 6-10 weeks long.

Tundra vegetation is also particularly vulnerable to physical disturbance. !K{$Fd/

The bogs are generally acidic. In their predicative function nominals agree with the subject. z&AgN0/a"pQB.4);?n#L|<9BMRI$E

This grazing pattern results in piles of graminoid litter known as lemming hay.

Other rodents, such as voles (family Cricetidae) and lemmings (tribe Lemmini) stay awake during the winter. Soil is formed slowly.

Chemical pollution stays in the shallow active layer of soils. The mosquito of the arctic tundra actually has an antifreeze compound in their bodies that helps them resist freezing. Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly.

In the peak of winter, the opposite occurs, and the entire landscape experiences complete darkness. %PDF-1.4

Towards the end of the season, and for some plants all year, you will also notice more reddish coloring, this helps these plants to absorb a wider spectrum of light and take advantage of the little sunlight coming over the horizon. On the other hand, plants like carnivorous bladderworts (. In winter, which lasts from 6-10 months depending how far north you are, the average temperature of the tundra is around -28C (-18.4 F) while extremes can dip to -70C (-94 F)! Because of constant immigration and emigration, the population continually oscillates. Tundra vegetation and soils are particularly vulnerable to chemical pollution.

The extensive area of Cambisols in this GEZ indicates the very wide range of parent materials, landforms, vegetation types, and SOC stocks associated with these soils, highlighting the difficulty of generalizing at broad scales. It occupies the area between. However, there are some key adaptations to make this possible. This is causing some areas to convert from a carbon sink to a carbon source, creating what we call a positive feedback loop where more carbon is released and increases temperatures, which leads to more carbon released, and so on.

Since they are an important prey species of many tundra predators, foxes and birds of prey like the snowy owl (. ) These soils, designated as Arctic Brown (Haplorthels), develop on sites where there is free drainage to a depth of at least 60cm. Plants include things like: low-lying grasess, like tundra grass (Dupontia fischeri), mosses, such as Sphagnum mosses, lichen, largely reindeer lichen (Cladonia rangiferina), low-lying shrubs, mountain cranberry (Vaccinium vitis-idaea) for example, cushion plants like the three toothed saxifrage (Saxifraga tricuspidata), some 400 flowering vascular plants, like the Dwarf Fireweed (Chamerion latifolium), and even bush-like willows (Family Salicaceae) that only grow around 8cm (3 inches) off the ground. There are even some plants that are able to store energy in their roots during the growing season to maintain them, or even to grow, underneath the snow in winter.

They even have helical nasal cavities, which causes the air they breathe to warm up before it enters their body! Driving vehicles over the tundra degrades the permafrost, leading to the melting of frozen ground (thermokarst). Deep scars from this melting can persist for many decades (Figure 6). Due to this, most birds that are migrants are monogamous, meaning that they mate with the same individual for life, and both parents help to raise and feed the chicks, as their food demand is very high to allow for this rapid growth. Tundra ecosystems are dominated by perennial grasses, forbs, shrubs, and biological soil crusts consisting of cyanobacteria, lichens, and mosses (Figure 1).

Infrastructure is being developed to help reduce fragmentation.

Surprisingly, arctic ground squirrels can actually super cool their body temperature to below 0 in order to stay asleep for longer periods and burn very little energy. They have all the adaptations necessary to live here, short stout bodies, thick fur, sharp hooves for digging and key behavioral strategies, such as huddling for warmth or forming tight circles around their young to defend themselves from predators such as the arctic wolf (. antarctic map earth global biomes climate theglobaleducationproject change succession project ocean globe ice currents sea zonation topic pollution endangered ecology

Luke Nave, Chris Swanston, in Developments in Soil Science, 2019. that have been stored there for a very long time. Thats what youll learn by spending a few minutes browsing this article and associated media..

These were, for years, the benchmark soils of the northern polar regions. However, the reader should keep in mind that the descriptions of the nature of the Arctic coastal plain and discussion of the threats to its existence apply to many Low Arctic regions of the world. Towards the end of the season, and for some plants all year, you will also notice more reddish coloring, this helps these plants to absorb a wider spectrum of light and take advantage of the little sunlight coming over the horizon. There are also more and more people moving into the north, especially with better and better technology making it easier to live here, even in the difficult winters. These populations that burst to life in the short summers are part of what brings many migrating birds here. endobj Caribou are also famous migrants, with gigantic herds arriving in the hundreds in spring, however there are populations in certain areas that do stay year round. belt around the arctic ocean, a transition zone from taiga to the polar ice caps, covering about 20% of The Earths surface, in Alaska, the Northern Coast and islands of Canada, Coastal Greenland, Iceland, Northern Europe (Scandinavia), Svalbard (an island north of Norway), and most of the Northern Coast of Russia and Siberia. This does mean though that they need quite a bit of moisture, so when it is dry they will go temporarily dormant, and revive when there is more moisture again. The arctic tundra, though very cold for much of the year, is said to be more strongly defined by its cool summer temperatures, instead of its winter lows. Though it takes an extreme effort to migrate such long distances, these animals can get the best of both worlds with this strategy by taking advantage of the lack of predators, abundant fast-growing plants, and plentiful insects and fish. Tundra occurs around the Arctic Circle at latitudes above where trees can survive and also at high altitudes above the tree line in other regions. In northern Europe, where a larger fraction of boreal tundra woodlands are managed or subject to atmospheric N deposition, N inputs can improve tree growth for economic purposes, while increasing detritus inputs, slowing decomposition, and increasing C storage in O-horizons (Berg, 2000; Hyvonen etal., 2007; Makipaa, 1995; Prescott, 2010). In terms of animal life, much of the diversity is made up of migrant animals, those that come here in the spring and leave before winter, such as massive herds of caribou or large flocks of various bird species. Organic deposits having a thickness of greater than 10, There are many small, isolated areas of well-drained soils within the tundra zone. The aim of this chapter is to draw attention to the unique characteristics of the Alaskan North Slope Coastal Tundra.

Since resources are generally low, dispersed unevenly, and vary in abundance according to the season, the majority of tundra animals need very large habitats that they can move in between easily.

See this page for an excellent overview of Arctic Tundra peoples. Alpine tundra provides seasonal habitat for wild ungulates, including elk, deer, red deer, mountain sheep, and mountain goats.

In saying this, plants in the tundra must have shallow roots that stretch outwards instead of down into the soil.

How?

The arctic poppy (. ) By continuing you agree to the use of cookies. The water does not soak into the ground because the permafrost blocks it. Second, since most migrants go north to breed and raise their young, their offspring need to be able to grow extremely quickly to make it back south. Species that normally live further south are encroaching into the habitat of tundra animals, causing new competition and difficulties for these animals, many of which already have low populations or are considered species at risk.

However, we have a limited number of fossil exhibits on display, including a magnificent Tyrannosaurus rex .

During peak population cycles when densities are high, lemmings can consume between 20 and 70% of the available plant mass. , such as thick waxy leaves that prevent water loss. Reptiles and amphibians are few or absent because of the extremely cold temperatures.

The arctic ground squirrel in particular can hibernate for 7-8 months of the year.

Have a listen, its really interesting.

The upper part of the horizon is also darker than the central portion.

Fish & Wildlife Service, AK.

Animal diversity is similarly low, with a small number of permanent bird and mammal species and a number of seasonal insects. is even able to orient its flower towards the sun to always receive maximum light.

They must also be able to withstand the freeze-thaw dynamics and survive with little soil nutrients. Have a listen, its really interesting. These populations that burst to life in the short summers are part of what brings many migrating birds here. Rainfall may vary in different regions of the arctic.

Within the tundra zone there are extensive sectors of Bog soils (Histels).

Due to continentality effects, however, the Taimyr is also the area where boreal forest extends farthest north, reaching about 72.5 N (as larch forest) north of Khatanga. Most of the same genera, of vascular and nonvascular plants, also occur in the high-mountain tundra. During the winter, they use wetlands and graze the soil-level parts of plants while discarding the upper portions of the plants. Interesting note: Listen to this podcast from The Wild on how these squirrels are being studied in order to look at helping humans hibernate during space travel.

There is a variety of different strategies for reproduction: Mosses for example use spores, primroses (. ) agpc]i^Bx!pRRIh?]oC(%"%#:YbPjm`id=QK"\C J4WUhd%8GIF)"VqU??VE$ 9,j#Y s^:0(jg NL .-nuHD{Q^!a3))exwd Y&MKI&H{9,.Yh@Qp:%dr"1n0.SGOy)v. You can make a direct, charitable donation on behalf of UCMP via Berkeleys secureGive to Calwebsite. This feature helps define the tundra. Saami in Northern Europe, only to name very few of the distinct groups that call the tundra their home. In terms of animal life, much of the diversity is made up of migrant animals, those that come here in the spring and leave before winter, such as massive herds of caribou or large flocks of various bird species.

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arctic tundra biodiversity

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