Reproductive Ecology of the Endangered Utah Endemic Hesperidanthus suffrutescens with Implications for Conservation

Lewis, Matthew; Schupp, Eugene W.

doi:10.1674/0003-0031-172.2.236

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…But as noted above, we found no evidence for this in our study. In addition, heavily dusting flowers experimentally apparently did not reduce fruit set, as 80% of dusted flowers set fruit, compared to the approximately 47% fruit set of hand-outcrossed flowers in a breeding system study of the same populations (Lewis and Schupp 2014). We have no data that can address the possibility that dust interferes with pollinator abundance or behavior.…”

Section: Effects Of Dust Deposition On Reproductionmentioning

confidence: 81%

“…Flowers mature acropetally beginning in mid-April, and the siliques mature and dehisce approximately 4 weeks after corolla loss (Tepedino 2009). It is an obligate outcrossing species that appears to depend on solitary bees for successful pollination (Lewis and Schupp 2014). As such, the plant species is potentially susceptible to indirect impacts (e.g., impacts on pollinator abundance, habitat, and foraging behavior), in addition to direct impacts on the plants themselves.…”

Section: Study Speciesmentioning

confidence: 99%

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Road Dust Correlated with Decreased Reproduction of the Endangered Utah Shrub Hesperidanthus suffrutescens

Lewis

Schupp

Monaco

2017

Western North American Naturalist

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Section: Effects Of Dust Deposition On Reproductionmentioning

confidence: 81%

Section: Study Speciesmentioning

confidence: 99%

Road Dust Correlated with Decreased Reproduction of the Endangered Utah Shrub Hesperidanthus suffrutescens

Lewis

Schupp

Monaco

2017

Western North American Naturalist

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“…In addition, herbivory by grazing livestock and feral horses is a possible source of SRM mortality that has not been studied (US Fish and Wildlife Service, 2010 (Glisson, 2004(Glisson, , 2005 indicate that SRM numbers are limited to about 3000 individuals in seven populations in three main areas, and a plan to update SRM species biology and distribution was outlined in the 2010 recovery plan (US Fish and Wildlife Service, 2010). Recent research indicates that although SRM is capable of self-pollination, seed set is lower in individuals that are self-pollinated compared with cross-pollination with other individuals, and SRM may be pollinator limited (Lewis and Schupp, 2014). Although the Bureau of Land Management (BLM) implements a buffer zone of 91 m (300 ft) for soil surface disturbances near known SRM locations, the proliferation of roads and well pads in the study area probably creates additional disturbances due to dust generation.…”

Section: Natural History Of Shrubby Reed-mustardmentioning

confidence: 99%

Modeling Rare Endemic Shrub Habitat in the Uinta Basin Using Soil, Spectral, and Topographic Data

Baker¹,

Fonnesbeck

Boettinger

2016

Soil Science Society of America Journal

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Conserving rare plants is important to biodiversity. Shrubby reed-mustard [Schoenocrambe suffrutescens (Rollins) S.L. Welsh and Chatterly] (SRM), a shrub endemic to the Uinta Basin, faces habitat loss due to energy development of fossil fuels. Little is known about the soil and site properties required for successful establishment, growth, and survival of SRM. Our goal was to create random forests models to identify potential SRM habitat and to verify habitat suitability in the field with easily measured properties. The soil properties (SP) model indicated that CaCO 3 equivalent, silt, and dry color value predicted the presence or absence of SRM with 10% out-of-bag (OOB) error. Soil properties were correlated with Landsat 5 Thematic Mapper spectral data and a digital elevation model in a Soil-Spectral Correlation (SSC) model. Yellowness, 3/2 normalized difference ratio (NDR), and 3/1 NDR were most strongly correlated with CaCO 3 equivalent and silt, and they predicted SRM habitat with 28% OOB error. guided by SSC model output, 250 additional field presence or absence points were used to train the Spectral-Topographic (ST) model, which was validated by an independent set of SRM plant locations. The ST model using area solar radiation, 7/2 NDR, 5/2 NDR, and the normalized difference vegetation index gave an OOB error of 23%. The ST model can be used to identify potential habitat across a large area. Once identified, easily measured soil and site data from the SP model can verify SRM habitat suitability. These models can help land managers locate and check key soil properties at potential SRM habitat sites.Abbreviations: BLM, Bureau of Land Management; DEM, digital elevation model; NDR, normalized difference ratio; NDVI, normalized difference vegetation index; OOB, outof-bag; SP, soil properties; SRM, shrubby reed-mustard; SSC, soil-spectral correlation; ST, spectral-topographic. P reserving populations of rare plants is important to maintain biodiversity, which increases genetic diversity, provides possible sources of food and medicinal plants, and provides ecosystem services such as protection of soil and water resources, nutrient cycling, and pollutant adsorption or uptake (Australian Department of the Environment, 1993). A species may be rare for a variety of reasons, including low tolerance to environmental change, preference for a very specific habitat, limited dispersal capabilities, etc. Endemic plants are often characterized by few populations concentrated in a narrow geographic distribution. Soil and geologic properties have been successfully used to explain the distribution of some rare endemic plants. For example, endemic species grow in soils formed on serpentinite with low Ca/Mg ratios and high levels of heavy metals (Cr, Co, Ni) inherited from the ultramafic parent material (Alexander et al., 2007;Lazarus et al., 2011;Proctor, 1971;van der Ent and Reeves, 2015 Core Ideas• Soil and site properties predict rare plant distribution.• Rare plant habitat can be predicted by random forests modeling of data...

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Intraspecific floral color variation as perceived by pollinators and non-pollinators: evidence for pollinator-imposed constraints?

2019

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Reproductive Ecology of the Endangered Utah Endemic Hesperidanthus suffrutescens with Implications for Conservation

Cited by 4 publications

References 29 publications

Road Dust Correlated with Decreased Reproduction of the Endangered Utah Shrub Hesperidanthus suffrutescens

Road Dust Correlated with Decreased Reproduction of the Endangered Utah Shrub Hesperidanthus suffrutescens

Modeling Rare Endemic Shrub Habitat in the Uinta Basin Using Soil, Spectral, and Topographic Data

Intraspecific floral color variation as perceived by pollinators and non-pollinators: evidence for pollinator-imposed constraints?

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