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Prosopis pallida - Pithecellobium dulce / Pennisetum setaceum Woodland & Scrub Group | NatureServe Biotics 2019
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Name: Prosopis pallida - Pithecellobium dulce / Pennisetum setaceum Woodland & Scrub Group
Reference: NatureServe Biotics 2019
Description: This ruderal Polynesian group includes all dry forests, woodlands and scrub that are strongly dominated (&gt;90% relative canopy cover) by non-native species in the tree canopy. <i>Prosopis pallida</i> is common in lowlands with other characteristic exotic trees such as <i>Pithecellobium dulce, Schinus terebinthifolius</i>, and <i>Tournefortia argentea</i> common along the coasts. Relatively mesic invasive trees such as <i>Morinda citrifolia, Psidium guajava</i>, and <i>Samanea saman</i> may be present, but do not dominate. This group also includes severely degraded stands still dominated by native trees such as <i>Sophora chrysophylla</i> with a ruderal understory strongly dominated by invasive, exotic species such as shrubs <i>Leucaena leucocephala</i> and <i>Lantana camara</i>, and herbaceous species <i>Microlaena stipoides, Melinis repens, Pennisetum ciliare, Pennisetum setaceum</i>, and <i>Urochloa maxima</i> to the degree that an ecologist cannot determine the natural plant community. Stands in this group have been converted to ruderal or novel vegetation usually with &gt;90% relative canopy cover of non-native species in the understory. This ruderal group occurs mostly along the coast and inland below 1000 m (3300 feet) elevation, but extends into the subalpine zone (2900 m [9510 feet]) on drier slopes of high volcanos of Maui and Hawai`i. Stands typically occur on the drier leeward sides of islands where there is a strong rainshadow effect from high mountains that reduce precipitation or occur above the inversion layer between 1600 and 3000 m, which dramatically reduces precipitation. Annual rainfall is generally 300-1200 mm. Substrates include well-drained, sandy loam soils derived from volcanic ash or cinder and weathered `a`â or pâhoehoe basaltic lava. 
Accession Code: urn:lsid:vegbank.org:commConcept:40144-{135FFEFE-9221-4918-A651-89F930969FF0}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-May-2016 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.860815 NatureServe ExplorerNatureServe Explorer logo
  Code: G407
  Scientific: Prosopis pallida - Pithecellobium dulce / Pennisetum setaceum Woodland & Scrub Group