Wet Meadow Plant Associations, Double O Unit, Malheur National Wildlife Refuge, Harney County, Oregon Public Deposited

http://ir.library.oregonstate.edu/concern/technical_reports/w66348095

Jess Wenick and Chad Karges of Malheur National Wildlife Refuge (MNWR) provided guidance, logistical support, and funding to The Wetlands Conservancy (TWC) for this project. Esther Lev of TWC coordinated the project and provided guidance as a member of the Ecology Woring Group (EWG). Vegetation sampling was done by Bruce Newhouse, Richard Brainerd, Jess Wenick, and Barry Smith.

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  • This report summarizes vegetation data collected in July 2015 in wet meadow and marshy habitats on the Double O Unit of Malheur National Wildlife Refuge (MNWR). Because vegetation sampled at the Double O was wetter and more alkaline than wet meadows sampled at the south end of the refuge in 2012 and 2013 (Christy 2014), data from the Double O Unit were analyzed and summarized separately. A total of 83 plots were sampled in 2015, and analysis of the data identified 14 plant associations: Alopecurus aequalis - Juncus balticus, Alopecurus pratensis - Potentilla anserina, Carex praegracilis - Juncus balticus, Cicuta douglasii - Carex nebrascensis, Distichlis spicata - Amphiscirpus nevadensis, Distichlis spicata - Nitrophila occidentalis, Eleocharis palustris - Juncus balticus, Eleocharis rostellata, Juncus balticus - Glaux maritima, Hippuris vulgaris - Triglochin maritima, Leymus triticoides - Juncus balticus, Schoenoplectus americanus, Spartina gracilis, and Triglochin maritima. Plant associations spanned a wetland gradient from seasonally moist to seasonally or perennially flooded, but surface water had left most stands at time of sampling. Mean Wetland Indicator Status scores and species composition help to place the plant associations within gradients in soil moisture and alkalinity. Seven of the 14 plant associations are listed in the International Vegetation Classification, and the remaining types are provisional.
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  • Christy, John A. Wet meadow plant associations, Double O, Unit Malheur National Wildlife Refuge, Harney County, Oregon. INR Report. Oregon Biodiversity Information Center, Institute for Natural Resources Portland State University, Portland, Oregon. July 2016. 46 pp.
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  • description.provenance : Submitted by Maria Wright (maria.wright@oregonstate.edu) on 2017-02-01T17:51:58Z No. of bitstreams: 1 2015_Malheur wet meadow plant assoc_2015.pdf: 5659611 bytes, checksum: 0dea7af03928fe8a60d760fdff99e716 (MD5)
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