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The spoonworm Echiurus echiurus was first described by the Prussian naturalist Peter Simon Pallas in 1766; he placed it in the earth worm genus Lumbricus. [5] In the mid-nineteenth century Echiura was placed, alongside Sipuncula and Priapulida, in the now defunct class Gephyrea (meaning a "bridge") in Annelida, because it was believed that they provided a link between annelids and holothurians ...
Salt marsh showing salt pannes and ponds, spartina alternifolia and invasive phragmites communis in foreground. Brackish marsh panne variants occur in brackish marshes (short graminoid variant), one of the native dominant species is spike grass (Distichlis spicata), some brackish marsh pannes are dominated by the narrow-leaved cattail (Typha angustifolia) an invasive exotic species.
Besides simply living at lower tide heights, non-motile organisms may be more dependent on coping mechanisms. For example, high intertidal organisms have a stronger stress response, a physiological response of making proteins that help recovery from temperature stress just as the immune response aids in the recovery from infection. [11]
The high intertidal zone is submerged at high tide but remains dry for long periods between high tides. [15] Due to the large variance of conditions possible in this region, it is inhabited by resilient wildlife that can withstand these changes such as barnacles, marine snails, mussels and hermit crabs. [15] Tides flow over the middle ...
The banks and stream beds of the river system also support riparian woodlands that exhibit the tree species of kikar, mulberry and sheesham. Such geographical landforms accompanied by an excellent system of monsoon climate provides an excellent ground for diversity of flora and fauna species. However, the plains are equally appealing to humans ...
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] Several Hindu legends refer to this tree. For example, Valmiki Ramayan reads: [27] In the stands of Lodhra trees, [28] Padmaka trees [29] and in the woods of Devadaru, or Deodar trees, Ravana is to be searched there and there, together with Sita. [4-43-13] The deodar is the national tree of Pakistan, [30] and the state tree of Himachal ...
An intertidal wetland is an area along a shoreline that is exposed to air at low tide and submerged at high tide. This type of wetland is defined by an intertidal zone and includes its own intertidal ecosystems .