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CEGL005947 Baccharis (emoryi, salicina) - Salix exigua Wet Shrubland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: (Emory''s Baccharis, Willow Baccharis) - Narrowleaf Willow Wet Shrubland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This riparian association is found in the Colorado Plateau and Pecos Basin in southeastern New Mexico and may occur in Trans-Pecos Texas. Baccharis emoryi or Baccharis salicina forms dense shrub thickets in association with Salix exigua. Canopies can exceed 85% cover and reach up to 2.5 m (8 feet) in height. The herbaceous layer is low to moderate in cover. Species may include Agrostis stolonifera, Eleocharis palustris, Equisetum spp., Juncus arcticus ssp. littoralis, Muhlenbergia asperifolia, Oxytenia acerosa, Phragmites australis, Saccharum ravennae, Schoenoplectus pungens, and Typha domingensis. Stands occur along low-gradient rivers with sandy-bottomed channels of wide lowland valleys at elevations from 450 to 1150 m (1500-3775 feet). Soils are moderately well-drained to well-drained silt loams or sandy loams derived from alluvium. Occasionally, they may have a thin, clayey surface layer that retains greater moisture. Underlying layers have less than 35% cobbles or gravels.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This association is largely known and described from National Park Service inventory efforts in the Colorado Plateau. It is distinguished from others in the alliance by the codominance of Salix exigua and the relatively low herbaceous cover.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: Baccharis emoryi and/or Baccharis salicina forms typically dense shrub thickets in association with Salix exigua. Canopies can exceed 85% cover and reach up to 2.5 m (8 feet) in height. Other woody species may include Symphoricarpos longiflorus. The herbaceous layer is dominated by graminoids and has low to moderate cover; it may include Agrostis stolonifera, Juncus arcticus ssp. littoralis (= Juncus balticus), Eleocharis palustris, Equisetum hyemale, Equisetum laevigatum, Muhlenbergia asperifolia, Oxytenia acerosa, Phragmites australis, Saccharum ravennae, Schoenoplectus pungens (= Scirpus pungens), and Typha domingensis. The exotic species Melilotus officinalis and Tamarix spp. may be present in some stands.

Dynamics:  No Data Available

Environmental Description:  This riparian shrubland occurs along low-gradient rivers with sandy-bottomed channels of wide lowland valleys at elevations from 450 to 1150 m (1500-3775 feet), or in spring-fed alcoves and canyon slopes. Soils are reported as weakly developed Aquic Ustipsamments and Oxyaquic Torrifluvents that are composed of deep sandy sediments that are well-drained. Occasionally, they may have a thin, clayey surface layer that retains greater moisture. Underlying layers have less than 35% cobbles or gravels.

Geographic Range: This riparian association is found in the Colorado Plateau in northern Arizona and southern Utah, the Pecos Basin in southeastern New Mexico and may occur in Trans-Pecos Texas and westward.

Nations: US

States/Provinces:  AZ, NM, TX?, UT




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G3

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Emory Baccharis-Coyote Willow CT (Muldavin et al. 2000a)

Concept Author(s): E. Muldavin et al. (2000a)

Author of Description: E. Muldavin et al. (2000a) and K.A. Schulz

Acknowledgements: No Data Available

Version Date: 09-01-16

  • Kearsley, M. J. C., K. Green, M. Tukman, M. Reid, M. Hall, T. J. Ayers, and K. Christie. 2015. Grand Canyon National Park-Grand Canyon / Parashant National Monument vegetation classification and mapping project. Natural Resource Report NPS/GRCA/NRR--2015/913. National Park Service, Fort Collins, CO. 75 pp. plus appendices.
  • Muldavin, E., P. Durkin, M. Bradley, M. Stuever, and P. Mehlhop. 2000a. Handbook of wetland vegetation communities of New Mexico. Volume I: Classification and community descriptions. Final report to the New Mexico Environment Department and the Environmental Protection Agency prepared by the New Mexico Natural Heritage Program, University of New Mexico, Albuquerque.
  • NHNM [Natural Heritage New Mexico]. No date. Unpublished data on file. Natural Heritage New Mexico, University of New Mexico, Albuquerque.
  • Reid, M. S., and M. E. Hall. 2010. Vegetation classification of Grand Canyon National Park. Draft report submitted to National Park Service, Fort Collins, CO.
  • Tendick, A., J. Spence, M. Reid, K. Shulz, G. Kittel, K. Green, A. Wight, and G. Wakefield. 2017. Vegetation classification and mapping project report, Glen Canyon National Recreation Area and Rainbow Bridge National Monument. Natural Resource Report NPS/NCPN/NRR—2017/1500. National Park Service, Fort Collins, CO. 1464 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.