Sequoia sempervirens

Sequoia sempervirens (səˈkwɔɪ.ə_,sɛmpərˈvaɪrənz) is the sole living species of the genus Sequoia in the cypress family Cupressaceae (formerly treated in Taxodiaceae). Common names include coast redwood, coastal redwood, and California redwood. It is an evergreen, long-lived, monoecious tree living 1,200–2,200 years or more. This species includes the tallest living trees on Earth, reaching up to in height (without the roots) and up to in diameter at breast height. These trees are also among the longest-living organisms on Earth. Before commercial logging and clearing began by the 1850s, this massive tree occurred naturally in an estimated along much of coastal California (excluding southern California where rainfall is not sufficient) and the southwestern corner of coastal Oregon within the United States. The name sequoia sometimes refers to the subfamily Sequoioideae, which includes S. sempervirens along with Sequoiadendron (giant sequoia) and Metasequoia (dawn redwood). Here, the term redwood on its own refers to the species covered in this article but not to the other two species. The coast redwood is known to have reached tall, with a trunk diameter of . It has a conical crown, with horizontal to slightly drooping branches. The trunk is remarkably straight. The bark can be very thick, up to , and quite soft and fibrous, with a bright red-brown color when freshly exposed (hence the name redwood), weathering darker. The root system is composed of shallow, wide-spreading lateral roots. The leaves are variable, being long and flat on young trees and shaded lower branches in older trees. The leaves are scalelike, long on shoots in full sun in the upper crown of older trees, with a full range of transition between the two extremes. They are dark green above and have two blue-white stomatal bands below. Leaf arrangement is spiral, but the larger shade leaves are twisted at the base to lie in a flat plane for maximum light capture. The species is monoecious, with pollen and seed cones on the same plant.

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Stability of tropical forest tree carbon-water relations in a rainfall exclusion treatment through shifts in effective water uptake depth

Charlotte Grossiord

Increasing severity and frequency of drought is predicted for large portions of the terrestrial biosphere, with major impacts already documented in wet tropical forests. Using a 4-year rainfall exclusion experiment in the Daintree Rainforest in northeast A ...

WILEY2021

Disturbance-grazer-vegetation interactions maintain habitat diversity in mountain pasture-woodlands

Alexandre Buttler, François Gillet, Alexander Ludwig Johannes Peringer

Low-intensity livestock grazing is a widespread management tool in order to maintain habitat diversity in mountain pasture-woodlands for nature conservation purposes. Historical photographs indicate that forest disturbance significantly contributed to fore ...

Elsevier Science Bv2017

Canopy wake measurements using multiple scanning wind LiDARs

Fernando Porté Agel, Corey Dean Markfort, Giacomo Valerio Iungo, Fernando Carbajo Fuertes

Canopy wakes have been shown, in controlled wind tunnel experiments, to significantly affect the fluxes of momentum, heat and other scalars at the land and water surface over distances of O(1 km), see Markfort et al. (EFM, 2013). However, there are current ...

2014

Explores risks in hydraulic developments, including economic, technological, and human risks, emphasizing risk analysis and mitigation measures.

Explores the physical features and main uses of Scot Pine, emphasizing its suitability for construction timber and packaging.