This dataset contains data supporting the paper: DeCrappeo, N.M., DeLorenze, E.J., Giguere, A.T., Pyke, D.A., and Bottomley, P.J. Fungal and bacterial contributions to nitrogen cycling in cheatgrass-invaded and uninvaded native sagebrush soils of the western USA (accepted at the journal Plant and Soil). The purpose of the study was to evaluate the relative contributions of soil bacteria and fungi to inorganic nitrogen (N) cycling in sagebrush and cheatgrass-invaded soils using a 15N isotope dilution experiment. Soils were collected from sagebrush and cheatgrass rhizospheres at six paired sites in southwest Idaho and southeast Oregon. In order to partition the contribution of each microbial group to N cycling, soils were treated with isotopically labeled N sources and protein synthesis inhibitors. Bronopol and cycloheximide block protein synthesis in bacteria and fungi, respectively; nitrogen can still be taken up by the organisms, but the organisms are unable to assimilate the nutrient into biomass. Laboratory incubations were carried out to study the partitioning of N to microbial biomass and dissolved inorganic nitrogen pools, which were then used to calculate the following nitrogen transformation rates: gross mineralization, net mineralization, ammonium consumption, and net nitrification.

The dataset supports a larger study that examined the impacts of three tackifiers (guar, psyllium, and polyacrylamide) on growth of two dryland mosses (Bryum argenteum and Syntrichia ruralis). Moss fragments were grown in petri dishes and subjected to individual tackifiers in one of three possible concentrations (0.5x, 1x, or 2x) of the respective manufacturer's recommended application rate. Distilled water was used as a control treatment, giving a total of ten treatments (nine tackifier-concentration combinations and a water control). Bryum fragments were watered four times daily for six weeks and Syntrichia fragments were watered twice daily for five weeks, after which the experiments were concluded. Shoot length, shoot number, gemma presence, protonema presence, bound sand mass, and moss organic matter mass were all measured at the end of the experiments. This dataset reports all measurements and calculations related to Bryum argenteum and Syntrichia ruralis and additional information describing mass determinations.

The dataset supports a larger study that examined the impacts of three tackifiers (guar, psyllium, and polyacrylamide) on growth of two dryland mosses (Bryum argenteum and Syntrichia ruralis). Moss fragments were grown in petri dishes and subjected to individual tackifiers in one of three possible concentrations (0.5x, 1x, or 2x) of the respective manufacturer's recommended application rate. Distilled water was used as a control treatment, giving a total of ten treatments (nine tackifier-concentration combinations and a water control). Bryum fragments were watered four times daily for six weeks and Syntrichia fragments were watered twice daily for five weeks, after which the experiments were concluded. Shoot length, shoot number, gemma presence, protonema presence, bound sand mass, and moss organic matter mass were all measured at the end of the experiments. This dataset reports all measurements and calculations related to Bryum argenteum and Syntrichia ruralis and additional information describing mass determinations.

Soil data includes carbon (total, organic, mineral-associated, particulate-organic) and texture. Bulk density data includes bulk density values used to calculate carbon stocks. Plant data includes microsite coverage percents and sagebrush demographics. Data is from uninvaded and cheatgrass invaded points near Grand Junction, Colorado and Rock Springs, Wyoming in October and November 2023.

This dataset includes global rasters of terrestrial biological nitrogen fixation (BNF) rates (in kgN/(ha*y)) for each major N-fixing niche in natural biomes (trees, shrubs, herbs, soil, litter, dead wood, ground mosses, biocrusts, and epiphytic lichens) and agricultural biomes (legume crops, forage legumes, and rice). It also includes total natural terrestrial, total agricultural, and total terrestrial BNF rasters. The dataset contains rasters with central and confidence interval values at 0.004 and 1-degree resolution.

This dataset includes global rasters of terrestrial biological nitrogen fixation (BNF) rates (in kgN/(ha*y)) for each major N-fixing niche in natural biomes (trees, shrubs, herbs, soil, litter, dead wood, ground mosses, biocrusts, and epiphytic lichens) and agricultural biomes (legume crops, forage legumes, and rice). It also includes total natural terrestrial, total agricultural, and total terrestrial BNF rasters. The dataset contains rasters with central and confidence interval values at 0.004 and 1-degree resolution.

The dataset supports a larger study that examined the impacts of three tackifiers (guar, psyllium, and polyacrylamide) on growth of two dryland mosses (Bryum argenteum and Syntrichia ruralis). Moss fragments were grown in petri dishes and subjected to individual tackifiers in one of three possible concentrations (0.5x, 1x, or 2x) of the respective manufacturer's recommended application rate. Distilled water was used as a control treatment, giving a total of ten treatments (nine tackifier-concentration combinations and a water control). Bryum fragments were watered four times daily for six weeks and Syntrichia fragments were watered twice daily for five weeks, after which the experiments were concluded. Shoot length, shoot number, gemma presence, protonema presence, bound sand mass, and moss organic matter mass were all measured at the end of the experiments. This dataset reports all measurements and calculations related to Syntrichia ruralis.

The dataset supports a larger study that examined the impacts of three tackifiers (guar, psyllium, and polyacrylamide) on growth of two dryland mosses (Bryum argenteum and Syntrichia ruralis). Moss fragments were grown in petri dishes and subjected to individual tackifiers in one of three possible concentrations (0.5x, 1x, or 2x) of the respective manufacturer's recommended application rate. Distilled water was used as a control treatment, giving a total of ten treatments (nine tackifier-concentration combinations and a water control). Bryum fragments were watered four times daily for six weeks and Syntrichia fragments were watered twice daily for five weeks, after which the experiments were concluded. Shoot length, shoot number, gemma presence, protonema presence, bound sand mass, and moss organic matter mass were all measured at the end of the experiments. This dataset reports all measurements and calculations related to Syntrichia ruralis.

The dataset supports a larger study that examined the impacts of three tackifiers (guar, psyllium, and polyacrylamide) on growth of two dryland mosses (Bryum argenteum and Syntrichia ruralis). Moss fragments were grown in petri dishes and subjected to individual tackifiers in one of three possible concentrations (0.5x, 1x, or 2x) of the respective manufacturer's recommended application rate. Distilled water was used as a control treatment, giving a total of ten treatments (nine tackifier-concentration combinations and a water control). Bryum fragments were watered four times daily for six weeks and Syntrichia fragments were watered twice daily for five weeks, after which the experiments were concluded. Shoot length, shoot number, gemma presence, protonema presence, bound sand mass, and moss organic matter mass were all measured at the end of the experiments. This dataset reports mass adjustment ratios (average non-moss organic matter mass in milligrams per 1 milligram of bound sand mass) that were used to subtract non-moss organic matter mass from total organic matter mass measurements, ultimately calculating moss organic matter mass per fragment at the end of the experiment. Total organic matter mass was determined by placing fragments and attached substrate in a furnace and burning off organic matter. The post-furnace weight was subtracted from the pre-furnace weight to calculate total organic matter mass, with the remaining weight representing the bound sand mass. A separate experiment was performed without moss fragments, but with tackifier and sand, and subjected to the same furnace process to determine the proportion of total organic matter mass made up of sand organic matter and tackifier. Bryum and Syntrichia were grown on different sand types, which were composed of different amounts of organic matter and resulted in different adjustment ratios for Bryum and Syntrichia experiments.

The dataset supports a larger study that examined the impacts of three tackifiers (guar, psyllium, and polyacrylamide) on growth of two dryland mosses (Bryum argenteum and Syntrichia ruralis). Moss fragments were grown in petri dishes and subjected to individual tackifiers in one of three possible concentrations (0.5x, 1x, or 2x) of the respective manufacturer's recommended application rate. Distilled water was used as a control treatment, giving a total of ten treatments (nine tackifier-concentration combinations and a water control). Bryum fragments were watered four times daily for six weeks and Syntrichia fragments were watered twice daily for five weeks, after which the experiments were concluded. Shoot length, shoot number, gemma presence, protonema presence, bound sand mass, and moss organic matter mass were all measured at the end of the experiments. This dataset reports mass adjustment ratios (average non-moss organic matter mass in milligrams per 1 milligram of bound sand mass) that were used to subtract non-moss organic matter mass from total organic matter mass measurements, ultimately calculating moss organic matter mass per fragment at the end of the experiment. Total organic matter mass was determined by placing fragments and attached substrate in a furnace and burning off organic matter. The post-furnace weight was subtracted from the pre-furnace weight to calculate total organic matter mass, with the remaining weight representing the bound sand mass. A separate experiment was performed without moss fragments, but with tackifier and sand, and subjected to the same furnace process to determine the proportion of total organic matter mass made up of sand organic matter and tackifier. Bryum and Syntrichia were grown on different sand types, which were composed of different amounts of organic matter and resulted in different adjustment ratios for Bryum and Syntrichia experiments.