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In ecology, stratification refers to the vertical layering of a habitat; the arrangement of vegetation in layers. [1][2] It classifies the layers (sing. stratum, pl. strata) of vegetation largely according to the different heights to which their plants grow. The individual layers are inhabited by different animal [3] and plant communities ...
The term stratification can be traced back to at least 1664 in John Evelyn's Sylva, or A Discourse of Forest-Trees and the Propagation of Timber, [2] where seeds were layered (stratified) between layers of moist soil and the strata were exposed to winter conditions. Thus, stratification became the process by which seeds were artificially ...
Seventeen countries grew a total of 55.2 million hectares of genetically modified maize and fifteen grew 23.9 hectares of genetically modified cotton. Nine million hectares of genetically modified canola was grown with 8 million of those in Canada. Other GM crops grown in 2014 include Alfalfa (862 000 ha), sugar beet (494 000 ha) and papaya (7 ...
Bignoniaceae (trumpet creeper family) Handroanthus impetiginosus. purple tabebuia; purple trumpet tree. Bignoniaceae (trumpet creeper family) Jacaranda: jacaranda trees. Jacaranda mimosifolia. blue jacaranda; black poui. Bignoniaceae (trumpet creeper family) Kigelia: sausage trees.
A single hectare of rainforest may contain 42,000 different species of insect, up to 807 trees of 313 species and 1,500 species of higher plants. [5] Tropical rainforests have been called the " world's largest pharmacy ", because over one quarter of natural medicines have been discovered within them.
Secondary succession is the secondary ecological succession of a plant's life. As opposed to the first, primary succession, secondary succession is a process started by an event (e.g. forest fire, harvesting, hurricane, etc.) that reduces an already established ecosystem (e.g. a forest or a wheat field) to a smaller population of species, and as such secondary succession occurs on preexisting ...
This is a list of Southern African trees, shrubs, suffrutices, geoxyles and lianes, and is intended to cover Angola, Botswana, Eswatini, Lesotho, Malawi, Mozambique, Namibia, South Africa, Zambia and Zimbabwe. [1] The notion of 'indigenous' is of necessity a blurred concept, and is clearly a function of both time and political boundaries.
Lawsonia alba Lam. nom. illeg. Lawsonia inermis, also known as hina, the henna tree, the mignonette tree, and the Egyptian privet, [4] is a flowering plant and one of the only two species of the genus Lawsonia, with the other being Lawsonia odorata. The species is named after the Scottish physician Isaac Lawson, a good friend of Linnaeus.
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