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Resource specialists at Dinosaur National Monument utilize both planned and unplanned wildland ignitions in big sagebrush (Artemisia tridentata)--dominated plant communities to restore successional processes, maintain vegetation vigor, and promote diversified landscapes. Short- and long-term effects of prescribed burning on small mammal populations are not well understood. The objectives of this study were to (1) compare small mammal species richness, similarity, and diversity between paired burned and unburned treatment plots, and (2) assess long-term trends of small mammal community responses to burning. Five paired burned/unburned sites having similar vegetation, soils, elevation, and annual precipitation were...
Physiological groups of soil microorganisms, total C and N and available nutrients were investigated in four heated (350 °C, 1 h) soils (one Ortic Podsol over sandstone and three Humic Cambisol over granite, schist or limestone) inoculated (1.5 μg chlorophyll a g−1 soil or 3.0 μg chlorophyll a g−1 soil) with four cyanobacterial strains of the genus Oscillatoria, Nostoc or Scytonema and a mixture of them. Cyanobacterial inoculation promoted the formation of microbiotic crusts which contained a relatively high number of NH4+-producers (7.4×109 g−1 crust), starch-mineralizing microbes (1.7×108 g−1 crust), cellulose-mineralizing microbes (1.4×106 g−1 crust) and NO2− and NO3− producers...
Pinyon and juniper have been expanding into sagebrush (Artemisia tridentata) ecosystems since settlement of the Great Basin around 1860. Herbaceous understory vegetation is eliminated as stand densities increase and the potential for catastrophic fires increases. Prescribed fire is increasingly used to remove trees and promote recovery of sagebrush ecosystems. We quantified the effects of prescribed fire, vegetation type, and time following fire on soil KCl extractable nitrogen and NaHCO3 extractable phosphorus in a pinyon?juniper woodland and its associated sagebrush ecosystem immediately before and for 4 years after a spring prescribed burn. Potassium chloride extractable NH4+ and total inorganic-N increased immediately...
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This soil and vegetation data were collected along a successional gradient at the Indiana Dunes National Park. Soil samples were processed for standard soil chemistry, texture, and nutrients. DNA extracted from soil samples were analyzed for bacterial communities using 16S rRNA amplicon sequencing technique to understand the composition and distribution of these communities along the successional gradient. Soils samples were collected in 2015 and 2017. Vegetation data were collected only in 2017, as the vegetation was dormant in 2015. We collected the data to examine the relationships among soils, vegetation, and composition of the microbial communities along a dunal chronosequence. A dunal chronosequence is a series...
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The Fire Restriction Areas represents a geographic location with similar timing for weather changes and resulting fire behavior potentials. Boundaries for each area generally follow county boundaries with some being placed along roadways, rivers, hydrologic divides or other known points that can be clearly described to the public and agency personnel. When a majority of land managers and agency administrators representing the jurisdictions within an area agree that the conditions warrant a restriction, the entire area will be placed in a restricted status. When land managers and agency administrators agree that the restrictions for that area can be removed, the entire area will rescind restrictions as a whole. ...


    map background search result map search result map Fire effects on small mammal communities in Dinosaur National Monument Fire Restriction Areas of Idaho Microbial Communities Across a Successional Gradient at Indiana Dunes National Park, 2015-2017 Microbial Communities Across a Successional Gradient at Indiana Dunes National Park, 2015-2017 Fire effects on small mammal communities in Dinosaur National Monument Fire Restriction Areas of Idaho