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USGS · 70250738

Matching existing and future native plant materials to disturbance-driven restoration needs

Abstract

Assessing the appropriateness of existing native plant materials can both determine which seed source to utilize for restoration projects, and identify locations for which new seed sources need to be developed. Here, we demonstrate an approach to meet these needs. This method identifies areas of high restoration need based on disturbance patterns, assesses the regional suitability of existing native plant materials based on climate similarity, and highlights geographic (and climatic) gaps where existing materials are likely unsuitable and where plant material development projects can be prioritized. We examined 12 high priority restoration species across the Colorado Plateau, a 38-million-ha region of the Intermountain West, United States to test our methodological pipeline. Fifty-four percent of the Colorado Plateau is disturbed by livestock grazing, wildfires that have burned in the past 20 years, or energy production from oil and gas wells, natural gas pipelines, and coal mines. Of the 28 commercially available plant materials for six of the focal species, only 3 have climate similarity that encompass more than 50% of the species modeled habitat on the Colorado Plateau. Across all commercial materials, most species (10 of 12) do not have any suitable plant material for 70% or more of their geographic range on the Colorado Plateau. Of those areas identified as not having any suitable plant materials, 47–56% are also disturbed. Our method provides usable, flexible protocols and spatially referenced data sources for optimizing the planning of new native plant materials in any region where restoration is needed and spatial data are available.

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90° N90° S · 180° W ← longitude → 180° E
Source-reported bounding extent: 32.21331270852155° to 40.0102806005563° latitude; -113.9655318957672° to -104.67109830201788° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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BibTeXRIS

Daniel E. Winkler, Sarah Sterner, John B. Bradford, Adrienne M. Pilmanis, Robert Massatti. 2023-12-25. Matching existing and future native plant materials to disturbance-driven restoration needs. https://doi.org/10.1111/rec.14088

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Biocrust restoration in novel climates: Assisted migration, habitat amelioration, and varied community composition as climate-smart techniques

Introduction Successful restoration of terrestrial drylands depends on stable, fertile soils that retain water. These functions are provided by biological soil crusts (biocrust), suggesting their reestablishment is a critical step in dryland restoration. Restoration may be hindered by the increasingly documented negative effects of climate change, while new climate-smart biocrust restoration methods may improve short- and long-term restoration outcomes. Objectives In this study, we evaluated three approaches to climate-smart biocrust restoration: assisted migration, habitat amelioration via shading, and varied community composition. Methods We collected biocrusts from across wide geographic gradients spanning multiple climate regimes, including wide ranges of mean annual temperature, mean annual precipitation, and precipitation seasonality. We used biocrust from these different environments as inoculum in two common garden restoration trials, in a research greenhouse testing shading and drying, and at a rangeland field site evaluating shading and warming. Results Community composition was related to climate across the natal (inoculum source) sites, and differences in the initial proportion of moss, lichen, and cyanobacteria resulted in different responses to experimental restoration treatments. We found mixed support for the efficacy of assisted migration and likely not enough success to outweigh the potential risks at present. Shading facilitated moss establishment even under warmer and drier conditions but inhibited lichen establishment and had little effect on cyanobacteria, which colonized quickly between mosses and lichens. Conclusion Overall, our results suggest several potential paths forward for biocrust restoration in warming drylands.

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Assessing working lands as habitat for disturbance-dependent birds using autonomous recording units

Introduction Working lands can provide habitat for declining disturbance-dependent birds, such as Bachman's Sparrow ( Peucaea aestivalis ) and Northern Bobwhite ( Colinus virginianus ), but it remains unclear whether restoration following intensive land use (e.g. surface mining) yields habitat comparable to less intensive land uses (e.g. timber production). Objectives We evaluated effects of land use both in working lands (recently replanted surface mine reclamation site and recently replanted timber production site) and reference sites explicitly managed for wildlife (recently restored young pine savanna and mature pine savanna) and understory vegetation characteristics on relative abundance of disturbance-dependent birds within upland pine ( Pinus spp.) communities in southeastern Georgia, United States. We hypothesized that the mine reclamation site would support similar bird species but in lower relative abundances than other land uses. Methods We conducted daily acoustic surveys using autonomous recording units (ARUs) and measured vegetation surveys once per point from May to June 2024. We used Royle-Nichols models, an adapted occupancy model, to estimate relative abundance for eight bird species. Results Land use influenced relative abundance for all species and explained more variation in relative abundance than measured understory vegetation characteristics. The mining reclamation site supported most disturbance-dependent species and, in some cases, equal or higher relative abundances, particularly for Northern Bobwhite and Common Nighthawk ( Chordeiles minor ). Responses across timber production and savanna sites varied by species. Vegetation effects were generally weaker and species-specific, suggesting that land use history and associated habitat legacies play an important role in structuring these bird communities. Conclusion Working lands, including reclaimed mines, can provide habitat for disturbance-dependent birds, and ARUs are effective for evaluating these patterns across land uses.

Restoration Ecology↗

Mesophotic octocoral larval settlement preferences and behaviors

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