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34-469: For centuries, cattle were kept over the summer near the Erlenbach stream by a grazing co-operative. Since the soils at 1,300 metres above sea level are not suitable for intensive agricultural use, it was primarily young cattle that were grazed. The pasture cooperative appointed a so-called herder who managed the cattle hut. In former times a herdsman, who was responsible for the cattle, assisted him. Today

68-405: A native species is indigenous to a given region or ecosystem if its presence in that region is the result of only local natural evolution (though often popularised as "with no human intervention") during history . The term is equivalent to the concept of indigenous or autochthonous species. A wild organism (as opposed to a domesticated organism) is known as an introduced species within

102-414: A conifer forest. Alders are common among the first species to colonize disturbed areas from floods, windstorms, fires, landslides, etc. Alder groves often serve as natural firebreaks since these broad-leaved trees are much less flammable than conifers. Their foliage and leaf litter does not carry a fire well, and their thin bark is sufficiently resistant to protect them from light surface fires. In addition,

136-407: A continued mutualistic interaction with a certain animal pollinator , and the pollinating animal may also be dependent on that plant species for a food source. Many species have adapted to very limited, unusual, or harsh conditions, such as cold climates or frequent wildfires . Others can live in diverse areas or adapt well to different surroundings. The diversity of species across many parts of

170-420: A degree of edibility, and may be rich in protein. Reported to have a bitter and unpleasant taste, they are more useful for survival purposes. The wood of certain alder species is often used to smoke various food items such as coffee , salmon , and other seafood. Alder is notably stable when immersed, and has been used for millennia as a material for pilings for piers and wharves. Most of the pilings that form

204-422: A native ecological system disturbed by economic development or other events, they may be historically inaccurate, incomplete, or pay little or no attention to ecotype accuracy or type conversions. They may fail to restore the original ecological system by overlooking the basics of remediation. Attention paid to the historical distribution of native species is a crucial first step to ensure the ecological integrity of

238-414: A particular place. A native species may occur in areas other than the one under consideration. The terms endemic and native also do not imply that an organism necessarily first originated or evolved where it is currently found. Native species form communities and biological interactions with other specific flora, fauna, fungi, and other organisms. For example, some plant species can only reproduce with

272-452: A result of this mutually beneficial relationship, alder improves the fertility of the soil where it grows, and as a pioneer species , it helps provide additional nitrogen for the successional species to follow. Because of its abundance, red alder delivers large amounts of nitrogen to enrich forest soils. Red alder stands have been found to supply between 130 and 320 kilograms per hectare (120 and 290 pounds per acre) of nitrogen annually to

306-582: A stable for the animals of the herder . In subsequent documents, the Erlenbacher Hof is pledged and sold several times. In this case the (usually 12 or 13) members of the Erlenbach Grazing Cooperative ( Erlenbacher Weidegenossenschaft ) are often named as owners. Since the 17th century an almost unbroken line of herders and innkeepers have occupied the hut. In 1769 a new combined domestic house and cattle hut were built. In

340-676: A variety of tumors. The inner bark of the alder, as well as red osier dogwood , or chokecherry , is used by some Indigenous peoples of the Americas in smoking mixtures, known as kinnikinnick , to improve the taste of the bearberry leaf. Alder is illustrated in the coat of arms for the Austrian town of Grossarl . Electric guitars, most notably those manufactured by the Fender Musical Instruments Corporation , have been built with alder bodies since

374-762: Is accessible by car from Oberried and is usually used as the starting point for numerous walks in the Feldberg region. It is especially suited as a base for the Alpine Path ( Alpiner Pfad ), one of the highest trails in the Black Forest , which runs through the Alpine terrain of the northern cliffs of the Feldberg and Stübenwasen . The exposed nature and Alpine character of the Alpiner Pfad are unusual for

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408-425: Is much slower than human-caused climate change ) changes sea level, ice cover, temperature, and rainfall, driving direct changes in habitability and indirect changes through the presence of predators, competitors, food sources, and even oxygen levels . Species do naturally appear, reproduce, and endure, or become extinct, and their distribution is rarely static or confined to a particular geographic location. Moreover,

442-558: Is often veneered , either by stained light woods such as oak, ash, or figured maple, or by darker woods such as teak or walnut. Alder bark and wood (like oak and sweet chestnut ) contain tannin and are traditionally used to tan leather. A red dye can also be extracted from the outer bark, and a yellow dye from the inner bark. Ermanno Olmi 's movie The Tree of Wooden Clogs ( L' Albero Degli Zoccoli , 1978) refers in its title to alder, typically used to make clogs as in this movie's plot. Native species In biogeography ,

476-465: Is particularly noted for its important symbiotic relationship with Frankia alni , an actinomycete , filamentous , nitrogen-fixing bacterium . This bacterium is found in root nodules , which may be as large as a human fist, with many small lobes, and light brown in colour. The bacterium absorbs nitrogen from the air and makes it available to the tree. Alder, in turn, provides the bacterium with sugars , which it produces through photosynthesis . As

510-545: Is the equivalent Latin name, from whence French aulne and Spanish Alamo (Spanish term for " poplar "). Alders are commonly found near streams, rivers, and wetlands. Sometimes where the prevalence of alders is particularly prominent these are called alder carrs . In the Pacific Northwest of North America, the white alder ( Alnus rhombifolia ) unlike other northwest alders, has an affinity for warm, dry climates, where it grows along watercourses, such as along

544-567: The Society for Ecological Restoration , native plant societies, Wild Ones , and Lady Bird Johnson Wildflower Center encourage the use of native plants. The identification of local remnant natural areas provides a basis for this work. Many books have been written on the subject of planting native plants in home gardens. The use of cultivars derived from native species is a widely disputed practice among native plant advocates. When ecological restoration projects are undertaken to restore

578-560: The herder manages the Erlenbacher Hut and looks after the animals. Thanks to well-developed roads and its own mains electricity, the Erlenbacher Hut can be occupied all year round by the herder and his family. The name Erlenbach could refer to a community of alder trees or it could be a person's name such as Erlebrand or Erlebrecht. It is clear from documents that the Erlenbach pasture cooperative already existed around A.D. 1000 or 1100. However, whether they were already using

612-499: The 1950s. Alder is appreciated for its tone that is claimed to be tight and evenly balanced, especially when compared to mahogany, and has been adopted by many electric guitar manufacturers. It usually is finished in opaque lacquer ( nitrocellulose , polyurethane , or polyester ), as it does not have a prominent grain. As a hardwood , alder is used in making furniture, cabinets, and other woodworking products. In these applications, its aforementioned lack of prominent grain means that it

646-585: The 1960s it was planned to open up the Erlenbach area for ski tourism, but this plan did not come to fruition. Currently Axel Brüstle and his wife, Karin Arens, are the herder and innkeeper at the Erlenbacher Hut, which is still maintained as a grazing cooperative. In summer the family looks after about 120 head of cattle on the Erlenbacher Weide, which covers 80 hectares at a height of between 1,100 and 1,300 metres above sea level. The Erlenbach

680-511: The Black Forest. 47°54′00″N 7°57′54″E  /  47.9000°N 07.9650°E  / 47.9000; 07.9650 Alder Alders are trees that compose the genus Alnus in the birch family Betulaceae . The genus includes about 35 species of monoecious trees and shrubs , a few reaching a large size, distributed throughout the north temperate zone with a few species extending into Central America , as well as

714-471: The Erlenbach as a highland pasture is not proven. In the 12th century, the place name "Erlibach" as a designation for a forest located under the Feldberg , first appeared in a bill of sale. The Erlenbach was sold several times over the course of the centuries, inter alia around 1327 to the Williamites . In 1472, the Erlenbach farm is first mentioned, which at that time consisted of a dwelling house and

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748-526: The coastal Northwest. Groves of red alder 25 to 50 centimetres (10 to 20 in) in diameter intermingle with young Douglas-fir forests west of the Cascades, attaining a maximum height of 30 to 33 m (100 to 110 ft) in about sixty years and then are afflicted by heart rot . Alders largely help create conditions favorable for giant conifers that replace them. Alder roots are parasitized by northern groundcone . The catkins of some alder species have

782-491: The distinction between native and non-native as being tied to a local occurrence during historical times has been criticised as lacking perspective, and a case was made for more graded categorisations such as that of prehistoric natives , which occurred in a region during prehistory but have since suffered local extinction there due to human involvement. A native species in a location is not necessarily also endemic to that location. Endemic species are exclusively found in

816-399: The family) in that the female catkins are woody and do not disintegrate at maturity, opening to release the seeds in a similar manner to many conifer cones . The largest species are red alder ( A. rubra ) on the west coast of North America, and black alder ( A. glutinosa ), native to most of Europe and widely introduced elsewhere, both reaching over 30 metres (100 ft). By contrast,

850-503: The following species is unresolved: The following hybrids have been described: The status of the following hybrids is unresolved: The oldest fossil pollen that can be identified as Alnus is from northern Bohemia , dating to the late Paleocene , around 58 million years ago. The common name alder evolved from the Old English word alor , which in turn is derived from Proto-Germanic root aliso . The generic name Alnus

884-552: The foundation of Venice were made from alder trees. Alder bark contains the anti-inflammatory salicin , which is metabolized into salicylic acid in the body. Some Native American cultures use red alder bark ( Alnus rubra ) to treat poison oak, insect bites, and skin irritations. Blackfeet Indians have traditionally used an infusion made from the bark of red alder to treat lymphatic disorders and tuberculosis . Recent clinical studies have verified that red alder contains betulin and lupeol , compounds shown to be effective against

918-491: The light weight of alder seeds – numbering 1.5 million per kilogram or 680,000 per pound – allows for easy dispersal by the wind. Although it outgrows coastal Douglas-fir for the first 25 years, it is very shade intolerant and seldom lives more than 100 years. Red alder is the Pacific Northwest's largest alder and the most plentiful and commercially important broad-leaved tree in

952-530: The lower Columbia River east of the Cascades and the Snake River, including Hells Canyon. Alder leaves and sometimes catkins are used as food by numerous butterflies and moths. A. glutinosa and A. viridis are classed as environmental weeds in New Zealand. Alder leaves and especially the roots are important to the ecosystem because they enrich the soil with nitrogen and other nutrients. Alder

986-411: The northern and southern Andes . With a few exceptions, alders are deciduous , and the leaves are alternate, simple, and serrated . The flowers are catkins with elongate male catkins on the same plant as shorter female catkins, often before leaves appear; they are mainly wind-pollinated , but also visited by bees to a small extent. These trees differ from the birches ( Betula , another genus in

1020-717: The project. For example, to prevent erosion of the recontoured sand dunes at the western edge of the Los Angeles International Airport in 1975, landscapers stabilized the backdunes with a "natural" seed mix (Mattoni 1989a). Unfortunately, the seed mix was representative of coastal sage scrub , an exogenous plant community, instead of the native dune scrub community. As a result, the El Segundo blue butterfly (Euphilotes battoides allyni) became an endangered species. The El Segundo blue butterfly population, which had once extended over 3200 acres along

1054-496: The regions where it was anthropogenically introduced. If an introduced species causes substantial ecological, environmental, and/or economic damage, it may be regarded more specifically as an invasive species . The notion of nativity is often a blurred concept, as it is a function of both time and political boundaries. Over long periods of time, local conditions and migratory patterns are constantly changing as tectonic plates move, join, and split. Natural climate change (which

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1088-422: The soil. From Alaska to Oregon, Alnus viridis subsp. sinuata ( A. sinuata , Sitka Alder or Slide Alder), characteristically pioneer fresh, gravelly sites at the foot of retreating glaciers. Studies show that Sitka alder, a more shrubby variety of alder, adds nitrogen to the soil at an average rate of 60 kg/ha (54 lb/acre) per year, helping convert the sterile glacial terrain to soil capable of supporting

1122-663: The widespread Alnus alnobetula (green alder) is rarely more than a 5 m-tall (16 ft) shrub. The genus is divided into three subgenera: Trees with stalked shoot buds, male and female catkins produced in autumn (fall) but stay closed over winter, pollinating in late winter or early spring, about 15–25 species, including: Trees or shrubs with stalked shoot buds, male and female catkins produced in autumn (fall) and expanding and pollinating then, three species: Shrubs with shoot buds not stalked, male and female catkins produced in late spring (after leaves appear) and expanding and pollinating then, one to four species: The status of

1156-1040: The world exists only because bioregions are separated by barriers, particularly large rivers , seas , oceans , mountains , and deserts . Humans can introduce species that have never met in their evolutionary history, on varying time scales ranging from days to decades (Long, 1981; Vermeij, 1991). Humans are moving species across the globe at an unprecedented rate. Those working to address invasive species view this as an increased risk to native species. As humans introduce species to new locations for cultivation, or transport them by accident, some of them may become invasive species, damaging native communities. Invasive species can have profound effects on ecosystems by changing ecosystem structure, function, species abundance , and community composition. Besides ecological damage, these species can also damage agriculture, infrastructure, and cultural assets. Government agencies and environmental groups are directing increasing resources to addressing these species. Native plant organizations such as

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