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Note: This page contains sample records for the topic "bluestem andropogon gerardii" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Rangeland Ecol Manage 59:267274 | May 2006 Nutritive Quality of Big Bluestem (Andropogon gerardii) and  

E-Print Network [OSTI]

to rural areas important to agricultural and forestry practices. Reports regarding O3 effects have focused can be as important as quantity, we determined various effects on nutritive quality characteristics in addition to biomass yield. Big bluestem exhibited little response to O3 exposure. For eastern gamagrass, we

Ditchkoff, Steve

2

Bluestem Electric Coop Inc | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin: Energy ResourcesJersey:formBlue Energy Address:Bluestem Electric Coop Inc Jump

3

Do yield and quality of big bluestem and switchgrass feedstock decline over winter?  

SciTech Connect (OSTI)

Switchgrass (Panicum virgatum L.) and big bluestem (Andropogon gerdardii Vitman) are potential perennial bioenergy feedstocks. Feedstock storage limitations, labor constraints for harvest, and environmental benefits provided by perennials are rationales for developing localized perennial feedstock as an alternative or in conjunction with annual feedstocks (i.e., crop residues). Little information is available on yield, mineral, and thermochemical properties of native species as related to harvest time. The study’s objectives were to compare the feedstock quantity and quality between grasses harvested in the fall or the following spring. It was hypothesized that biomass yield may decline, but translocation and/or leaching of minerals from the feedstock would improve feedstock quality. Feedstock yield did not differ by crop, harvest time, or their interactions. Both grasses averaged 6.0 Mg ha-1 (fall) and 5.4 Mg ha-1 (spring) with similar high heating value (17.7 MJ kg-1). The K/(Ca + Mg) ratio, used as a quality indicator declined to below a 0.5 threshold, but energy yield (Megajoule per kilogram) decreased 13% by delaying harvest until spring. Only once during the four study-years were conditions ideal for early spring harvest, in contrast during another spring, very muddy conditions resulted in excessive soil contamination. Early spring harvest may be hampered by late snow, lodging, and muddy conditions that may delay or prevent harvest, and result in soil contamination of the feedstock. However, reducing slagging/fouling potential and the mass of mineral nutrients removed from the field without a dramatic loss in biomass or caloric content are reasons to delay harvest until spring.

Jane M.F. Johnson; Garold L. Gresham

2014-03-01T23:59:59.000Z

4

Partitioning the effects of plant biomass and litter on Andropogon gerardi in old-field vegetation  

E-Print Network [OSTI]

We examined the effects of living plant neighbors and litter on the performance of a native C4 grass, Andropogon gerardi, at five old-field sites that differ in community biomass and soil fertility. We used plant removal experiments in which both...

Foster, Bryan L.; Gross, Katherine L.

1997-10-01T23:59:59.000Z

5

Performance of selected clones of little bluestem, sand bluestem, switchgrass and sideoats grama on a mixedland site of the Rolling Plains of Texas  

E-Print Network [OSTI]

#507U.......... ................ 77 7* Photograph of switchgrass #5013.............. ........... 77 8. Photograph of switchgrass #5001;.*............ ............ 78 9* Photograph of switchgrass #5171........... ..... .......... 78 10* Photograph... to equal its 1955 yield by only h*9 grains, a figure which 28 29 Table 3* Flowering dates of little bluestem clones, 1955 Bate Clone Nos, 7/7 U57 7 /i i 1088 7/L6 1087 8/2 1022 8/h 1029 8/6 1097 8/8 1115 8M m )i 8A8 1162 9/5 1107 9/18 1059 9...

Duvall, Vinson Lamar

1959-01-01T23:59:59.000Z

6

Nutritive value of eastern little bluestem and sweetgum as influenced by canopy condition and soil  

E-Print Network [OSTI]

loam (c. l. ) under an open and closed canopy during the months of June, August, and October within the loblolly-shortleaf pine region of central east Texas. Means followed by the same letter are not significantly different at the 95% level.... f. s. l. ), and Lacezda clay loam (c. l. ) under an open and closed canopy for the months of June, August, and October within the loblolly-shortleaf pine region of central east Texas. 31 Mean crude protein (%) of eastern little bluestem leaves...

Howell, Joe Wynn

1981-01-01T23:59:59.000Z

7

Effect of clipping at several stages of growth of first year plants of cane Bluesteam (Andropogon barbinodis Lag.) on subsequent development  

E-Print Network [OSTI]

in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1965 Major Subject: Range Management EFFECT OF CLIPPING AT SEVERAL STAGES OF GROWTH OF FIRST YEAR PLANTS OF CANE BLUESTEM (~Ad P S S d I S. ) ON SUBSEQUENT DEVELDPMENT... L. Leinweber. Also, thanks to Mr. Paul Ohlenbusch, graduate student of Range Management, for his help and suggestions during the study. Appreciation is extended to Dr. Eldred E. Dayhoff, staff member of the Institute of Statistics, and Mr...

Bernardon, Abel Eduardo

1965-01-01T23:59:59.000Z

8

A cytogenetical survey of the Andropogon ischaemum complex  

E-Print Network [OSTI]

to U) O U3 o DOm sO 4> O O 4> O O 00- 4> O P DOc NO v/t vO VO vO A*52S O to Cd UJ ?8 OQ g H * CD ? *i CO ET O O ? 4>O S s o s ? to to O V-n CD ?U P...

Celarier, Robert Paul

1956-01-01T23:59:59.000Z

9

Effects of One Year of Intensive Clipping on Big Bluestem  

E-Print Network [OSTI]

to the lab, and cold-water washed, rhizomes only were retained. In 1969 the rhizome samples were analyzed mill (40 mesh screen), then stored in sealed glass bottles in the dark. Total nonstructural). Kjeldahl nitrogen also was run on each sample. In mid-July 1970, grams dry matter/1000 cm* and tiller

Owensby, Clenton E.

10

Bridging the Divide: Linking Genomics to Ecosystem Responses to Climate Change: Final Report  

SciTech Connect (OSTI)

Over the project period, we have addressed the following objectives: 1) assess the effects of altered precipitation patterns (i.e., increased variability in growing season precipitation) on genetic diversity of the dominant C4 grass species, Andropogon gerardii, and 2) experimentally assess the impacts of extreme climatic events (heat wave, drought) on responses of the dominant C4 grasses, A. gerardii and Sorghastrum nutans, and the consequences of these response for community and ecosystem structure and function. Below is a summary of how we have addressed these objectives. Objective 1 After ten years of altered precipitation, we found the number of genotypes of A. gerardii was significantly reduced compared to the ambient precipitation treatments (Avolio et al., 2013a). Although genotype number was reduced, the remaining genotypes were less related to one another indicating that the altered precipitation treatment was selecting for increasingly dissimilar genomes (based on mean pairwise Dice distance among individuals). For the four key genotypes that displayed differential abundances depending on the precipitation treatment (G1, G4, and G11 in the altered plots and G2 in the ambient plots), we identified phenotypic differences in the field that could account for ecological sorting (Avolio & Smith, 2013a). The three altered rainfall genotypes also have very different phenotypic traits in the greenhouse in response to different soil moisture availabilities (Avolio and Smith, 2013c). Two of the genotypes that increased in abundance in the altered precipitation plots had greater allocation to root biomass (G4 and G11), while G1 allocated more biomass aboveground. These phenotypic differences among genotypes suggests that changes in genotypic structure between the altered and the ambient treatments has likely occurred via niche differentiation, driven by changes in soil moisture dynamics (reduced mean, increased variability and changes in the depth distribution of soil moisture) under a more variable precipitation regime, rather than reduced population numbers (A. gerardii tiller densities did not differ between altered and ambient treatments; p = 0.505) or a priori differences in genotype richness (Avolio et al.2013a). This ecological sorting of genotypes, which accounts for 40% of all sampled individuals in the altered plots, is an important legacy of the press chronic climate changes in the RaMPs experiment. Objective 2 In May 2010, we established the Climate Extremes Experiment at the Konza Prairie Biological Station. For the experiment, a gradient of temperatures, ranging from ambient to extreme, were imposed in 2010 and 2011 as a mid-season heat wave under well-watered or severe drought conditions. This study allowed us for the first time to examine species-specific thresholds of responses to climate extremes and assess how these phenotypic responses may impact selection of particular genotypes, with the ultimate goal of linking alterations in individual performance and genetic diversity to ecosystem structure and functioning. We found that tallgrass prairie was resistant to heat waves, but it was not resistant to extreme drought, which reduced aboveground net primary productivity (ANPP) below the lowest level measured in this grassland in almost thirty years (Hoover et al. in press(a)). This extreme reduction in ecosystem function was a consequence of reduced productivity of both C4 grasses and C3 forbs. This reduction in biomass of the C4 grasses (Andropogon gerardii and Sorghastrum nutans) was, in part, due to significant reductions in photosynthesis, leaf water potential and productivity with drought in the dominant grasses species, with S. nutans was more sensitive than A. gerardii to drought (Hoover et al. in press(b)). However, the dominant forb was negatively impacted by the drought more than the dominant grasses, and this led to a reordering of species abundances within the plant community. Although this change in community composition persisted post-drought, ANPP recovered completely the year after drought

Smith, Melinda D.

2014-03-15T23:59:59.000Z

11

Reseeding trials with seedhay material of little bluestem in western Williamson County, Texas  

E-Print Network [OSTI]

total for the plot. This total was used as a '~e to compute the percentage composition of each speoiss for t. &e plot, The number of weed and forb plants per acre was recorded by actual stem count on a three inch belt on one ide of each line...?f established seedlings of little blusstem found within the three inch belt transsot wss recorded in the fall readings. To arrive at an indication of vigor in the established seedlings& biseote were made of average siaed seedlings. T? obtaining a bisect a...

Yarlett, Lewis L

1954-01-01T23:59:59.000Z

12

Use of tristimulus colorimetry to measure ornamental color in little bluestem grass (Schizachyrium scoparium [Michx.] Nash)  

E-Print Network [OSTI]

performance of a plant species. Knowledge of color response to horticultural media is important for efficient production and public appeal at sale. This is especially important with grasses, where the color performance is manifested in the entire visible... subjective numerical scale. Cool season and native grasses exhibited the best winter survival in Nebraska. Ornamental qualities for these species were stated as inferior to those of imported species. Another publication (Meyer, 1975) dealt primarily...

Snowden, John Seward

2012-06-07T23:59:59.000Z

13

NUTRITIVE QUALITY OF EASTERN GAMAGRASS, BIG BLUESTEM, AND HIGHBUSH BLACKBERRY EXPOSED TO TROPOSPHERIC OZONE  

E-Print Network [OSTI]

metropolitan areas to rural areas important to agricultural and forestry practices. Many studies regarding O3) the ambient concentration of O3. Because forage quality can be just as important as quantity, I chose to investigate effects on nutritive quality parameters in addition to biomass yield. Mean 12-hr daytime (0900

Ditchkoff, Steve

14

The use of regression equations to determine utilization of little bluestem  

E-Print Network [OSTI]

of stubble-height at 50 percent utilization for sites I, III, IV and V in 1950................... . 37 X. Analysis of variance of stubble-height at 50 percent utilization for site I in 1949 and 1950 ........................... 37 XI. Correlation... artificially-grazed little blue? st ejk plants at three different times by two different methods................ 69 V 1. Map of Texas showing location of study areas and adjacent weather stations .............. 8 2 . Aspect of site I showing the widely...

McArthur, James Andrew Bell

1951-01-01T23:59:59.000Z

15

Fertilization of yellow beardgrass, Andropogon Ischaemum L., with special reference to forage yield, seed yield, and seed quality  

E-Print Network [OSTI]

February 28, lq/+Q. Ths fertilizers vere partly covered by running a plow lightly through the middles. The Zertilizers vere applied at random to the plots in ecch reps. cation, The seed IBateriai was ~sted Nay @, and October 8 by cLLpping the psduncles...

Bates, Richard P

1950-01-01T23:59:59.000Z

16

The effect of burning, under proper grazing, on bluestem pastures in the Flint Hills of Kansas in relation to the botanical, chemical, and nutritional composition of the vegetation  

E-Print Network [OSTI]

s ........................................ M+ Steer G r a d e s ...................................... 52 S U M M A R Y .................................................. 56 LITERATURE CITED ........................................ ..60 Page I. Precipitation by month and year...-soil relationships on the pastures Anderson and F l y (1955) delineated six range sites. Plate 1 shows these sites. Site 1 presented the largest comparable grass sampling area among all the pastures. All other sites with the possible exception of Site 2 make up...

Smith, Edgar F.

2013-10-04T23:59:59.000Z

17

Seeding Rangeland.  

E-Print Network [OSTI]

top (Digitaria ca/i(ornica) Caucasian bluestem (Bothriochloa caucasica) Common reed9 (Phragmites australis) Eastern gamagrass (Tripsacum dactyloides) Gordo bluestem (Dichanthium aristatum) ,___,.__ ~reen sp,ra_n~}.~~~!'- Variety1 Saltalk...

Welch, Tommy G.; Rector, Barron S.; Alderson, James S.

1993-01-01T23:59:59.000Z

18

UTILITIES -STOKER BOILER REPLACEMENT  

E-Print Network [OSTI]

HUGHESAVE COUNTRY CL UBBLVD GRAEBER ST BIG BLU ESTEMCOURT LI TTLE BLUESTEM COURT CO LLEGE MAPLE, WILLOW

Mayfield, John

19

Evaluation of four grasses for seeding on South Texas rangeland  

E-Print Network [OSTI]

annulatus Forsk cv. "Pretoria 90"), Gordo bluestem (Dicanthium aristatum (Poir. ) C. E. Hubb. cv. "Gordo"), King Ranch bluestem (Bothriochloa ishchaemum L. var. songaricus Rupr. ), Kleberg bluestem (Bothriochloa annulatus Forsk. ), Medio bluestem... (Dicanthium aristatum (Poir. ) C. E. Hubb. cv. "Medio" ), Higgins buffelgrass (Cenchrus ciliaris L. cv. "Higgins"), Wintergreen h dihgas kehlais~steet h k. ca. "ah t g e), d E 1 1 g (~Ett 1 lg h d. ) N NErmeloN). Selection cri teria included initial...

Polk, David Beck

1974-01-01T23:59:59.000Z

20

Brush Control and Range Improvement: In the Post Oak-Blackjack Oak Area of Texas.  

E-Print Network [OSTI]

limited amount of underbrush and such associated species as greenbrier, live oak and mesquite. A distinguishing feature of the fringe area is the abundance of buffalograss. Early settlers in the area report little bluestem as the principal species... produce little palatable forage. Productive bottom- land sites support stands of oaks, elm, pecan and bois d'arc with a forage cover of bluestems, Indiangrass, Canada wildrye and other climax species. EAST CROSS TIMBERS The oak belt characteristic...

Darrow, Robert A.; McCully, Wayne G.

1959-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "bluestem andropogon gerardii" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Utilization and composition of forage in a longleaf-pine-hardwood forest of Newton County, Texas  

E-Print Network [OSTI]

bluostem from s'tc 1& open& of forage clipped to simlulate grating as observed on site A Data on little bluestem from site B, intermediate ~ of fox age olipped to sgsulate graain" as observed on s" te B ~ ~ ~ o ~ o ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Data... on little bluestam from site C, intermediate& of forage clipped to simulate grasing as observed on site ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Cl IV ~ Vie Data on little bluestem fro= site D& heavy& of forage clipped to s+ulate grasping as observed on site...

Miller, William B

1951-01-01T23:59:59.000Z

22

Biological Invasions 3: 5168, 2001. 2001 Kluwer Academic Publishers. Printed in the Netherlands.  

E-Print Network [OSTI]

, invertebrates, Juncus gerardii, New England, Phragmites australis, Spartina patens, tidal marsh Abstract. On the eastern seaboard of the USA, Phragmites australis has invaded both brackish and salt marsh habitats. Phragmites australis influence on sediments and fauna was investigated along a salinity and invasion

Levin, Lisa

23

Establishment of grass mixtures on roadsides  

E-Print Network [OSTI]

of the mulch. Evaporabon of soil moisture from the seed zone can be reduced with a surface inulch for 6 days to 2 weeks, an advantage which can be crucial in the emergence and development of young plants. A hectare with 0. 9 tons of sorghum residue.../ha Buffalograss Green sprangletop Little bluestem Sideoats grama cv. Haskell Yellow Indiangrass cv. Cheyenne 5. 9 0. 7 1. 2 2. 0 1. 7 Lufkin Bermudagrass (Common) Green sprangletop Little bluestem Switchgrass Yellow Indiangrass 1. 0 0. 8 1. 6 1...

Simpkins, Cynthia Lynne

1992-01-01T23:59:59.000Z

24

Seed Production Characteristics of Some Introduced Warm-Season Grasses.  

E-Print Network [OSTI]

-63 Forage production1 Ssed production2 1961 1962 1963 Accession or variety Species 1961 1962 1963 Percent Percent ~eave.' pounds Pounds seed Pounds Pretoria 90 Dicanthium annulatum 3.4 1.5 2.6 27.1 90 8 4 2 11.7 70 Medio Dicanthium caricosum .9 .6 1... production characteristics, ;Ire numerous members of the introtluced bluestems, ey)e(i;~lly members of the Dicnnthizlm complex. Some nl (llcse include Medio, Pretoria 90, Angleton and li1ebe1.g bluestems. Kleingrass, Panicum coloratum, i5 anotller...

Holt, Ethan C.

1965-01-01T23:59:59.000Z

25

Impact of prescribed burning on Gulf Coast tick populations  

E-Print Network [OSTI]

included upland prairies consisting of lush and moderately tall little bluestem (~ski* h 1 ~i (Mt h . ] M h . ~f f. t. M bb bkbhbl kby(~sh(b(1t MhdRbp h btt t fth 1 h b; (Rh s ~)li L. ) h bft t fth d t1yd d t y; p ( (~oi y ~ii 1 L. ) habitat which...

Oldham, Thomas Walter

1983-01-01T23:59:59.000Z

26

Perennials, Grasses & Shrubs Colorado State Forest Service Nursery is proud to  

E-Print Network [OSTI]

maintenance evergreen is a must for your landscape. CALL TODAY! 970-491-8429 #12; sales season** Grasses Little Bluestem · Low maintenance cover plant · Prefers well drained soils is a great addition to your landscape. Mountain Mahogany This species provides attractive color year around

27

Effect of Brush Vegetation on Deep Drainage Using Chloride Mass Balance  

E-Print Network [OSTI]

is comparable to that by herbaceous vegetation (Wilcox, 2005). The canopy of an average-size, mature redberry and ashe juniper can intercept 26% and 37% of the annual precipitation, respectively. Redberry and ashe juniper litter can intercept 40% and 43..., superactive, thermic Pachic Paleustolls. Dominant woody-shrub vegetation cover includes juniper (Juniperus ashei) with other existing vegetation such as little bluestem (Schizachyrium scoparium) and threeawn (Aristida). Site G4 The soil at site G4...

Navarrete Ganchozo, Ronald J.

2011-02-22T23:59:59.000Z

28

Seeding Rangeland.  

E-Print Network [OSTI]

30 (Phragmites australis) 12 to 18 rhizomes in long per foot of row ( I" ~ (Enge m..,." nia pinnatifida) \\-:- ~-: . Engel laisy ( Eldorado 58.500 5.0 15.0 1 3 2 1 3 N C I X X X X X X X X X X X X X ~ ... Gordo bluestem 500.000 0.5 l.2 2 2 2 3 2...

Welch, Tommy G.; Haferkamp, Marshall R.

1987-01-01T23:59:59.000Z

29

Boalsburg, Pennsylvania: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin: Energy ResourcesJersey:formBlue Energy Address:Bluestem

30

The establishment, growth, and forage production of five grass species during their first growing season on an upland postoak site in Brazos County, Texas  

E-Print Network [OSTI]

showing good growth and its erect culms on July 16, 1953 King Ranch bluestem on July 16, 1953, showing its sprawling culms and slow initial growth 31 32 32 14. Silver beardgrass on July 16, 1953. Growth compares favorably with that of RF472... and isolation strips. When plantings were made and when readings were taken of the plots, the inside plots A I' ) Replications V Poi Poi Pci Bou 4sa RF472 Asa RF472 Asa Asa 4is N Bou Poi Cheek Asa RF472 Asa Ais Cheok Pci 1. 9 ' Cheek Bou Asa RF...

Adcock, Willie Leroy

1954-01-01T23:59:59.000Z

31

Bluewater Wind LLC | Open Energy Information  

Open Energy Info (EERE)

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32

Blum, Texas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

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33

Blumau GEPP | Open Energy Information  

Open Energy Info (EERE)

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34

Blundell 2 Power Plant Details | Open Energy Information  

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35

Blythe, California: Energy Resources | Open Energy Information  

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36

Blytheville, Arkansas: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

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37

Boardman, Ohio: Energy Resources | Open Energy Information  

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38

Bob Lawrence Associates Inc | Open Energy Information  

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39

Bobst Group SA | Open Energy Information  

Open Energy Info (EERE)

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40

Boca Del Mar, Florida: Energy Resources | Open Energy Information  

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Note: This page contains sample records for the topic "bluestem andropogon gerardii" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Boca Pointe, Florida: Energy Resources | Open Energy Information  

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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin: Energy ResourcesJersey:formBlue Energy Address:BluestemBoardman,

42

Boca Raton, Florida: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin: Energy ResourcesJersey:formBlue Energy Address:BluestemBoardman,Raton, Florida:

43

Body Wave Tomography For Regional Scale Assessment Of Geothermal Indicators  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin: Energy ResourcesJersey:formBlue Energy Address:BluestemBoardman,Raton,

44

Response of Pan American Balsamscale, Soil, and Livestock to Prescribed Burning.  

E-Print Network [OSTI]

exclosure was har vested to a 2.5-cm stubble height on f\\pnl 3b' and July 16, 1980; on April 30 and June 29, 1981; and on April 12 and May 26, 1982. Green herb age was separated into grasses and forbs then dried at 60?C for 48 hr and weighed...(s) Pan American Little Ratio burned balsamscale bluestem PAB:LB None 73.0 cd 2.5 a 29.2:1 1981 45.3 b 14.2 ab 3.2:1 1982 60.5 be 2.0 a 30.3:1 1983 86.8 a 2.1 a 41.3:1 1981 & 1982 12.8 a 53.0 c 1 :4.1 1981 & 1983 26.8 a 51.4 c 1 :1.9 1982 & 1983 62...

Mutz, J.L.; Greene, T.G.; Scifres, C.J.; Koerth, B.H.

1985-01-01T23:59:59.000Z

45

Screening level model for ecological risk assessment at EF-Site Los Alamos National Laboratory, New Mexico. Final report  

SciTech Connect (OSTI)

In response to a paucity of data on the chemical toxicity of uranium to plants, a factorial experiment employing five uranium concentrations (0, 50, 500, 5000, 25000 ppm) and three moisture regimes (low, medium, high) was performed using three native grasses. Buchloe dactyloides (buffalograss-mid/late seral), Schizachyrium scoparium (little bluestem-late seral), and Aristida longiseta (purple threeawn-early/mid seral) were grown in monocultures and every mixture of two species under all combinations of uranium and moisture levels. This design allows for the analysis of uranium effects, as well as possible compound effects due to moisture stress. Several measures of plant health and viability were made, including: percent emergence, survivability of seedlings and mature plants, root and shoot biomass, and the number and mass of inflorescences. No significant differences between uranium levels were observed in terms of emergence and seedling survival. Effects are evident for plant biomass, fecundity, and long-term survivability.

Alldredge, A.W.; Kirchner, T.B.; McLendon, T. [and others

1995-12-01T23:59:59.000Z

46

The initial phase of a Longleaf Pine-Wiregrass Savanna restoration: species establishment and community responses.  

SciTech Connect (OSTI)

AbstractAbstract The significant loss of the longleaf pine-wiregrass ecosystem in the southeastern United States has serious implications for biodiversity and ecosystem functioning. In response to this loss, we have initiated a long-term and landscape-scale restoration experiment at the 80,125 ha (310 mi2) Department of Energy Savannah River Site (SRS) located near Aiken, South Carolina. Aristida beyrichiana (wiregrass), an important and dominant grass (i.e., a “matrix” species) of the longleaf pine savanna understory, and 31 other herbaceous “non-matrix” species were planted at six locations throughout SRS in 2002 and 2003. Of the 36,056 transplanted seedlings, 75% were still alive in June 2004, while mean 1–2 year survival across all planted species was 48%. Lespedeza hirta (hairy lespedeza) exhibited the greatest overall survival per 3 ×3 m cell at 95%, whereas Schizachyrium spp. (little bluestem) exhibited the greatest mean cover among individual species at 5.9%. Wiregrass survival and cover were significantly reduced when planted with non-matrix species. Aggregate cover of all planted species in restored cells averaged 25.9% in 2006. High rates of survival and growth of the planted species resulted in greater species richness (SR), diversity, and vegetative cover in restored cells. Results suggest that the loss of the longleaf pine-wiregrass ecosystem may be ameliorated through restoration efforts and illustrate the positive impact of restoration plantings on biodiversity and vegetative cover.

Aschenbach, Todd, A; Foster, Bryan, L.; Imm, Donald, W.

2010-09-01T23:59:59.000Z

47

Final Technical Report  

SciTech Connect (OSTI)

The following report contributes to our knowledge of how to economically produce wildlife-friendly grass mixtures for future fuel feedstocks in the northern plains. It investigates northern-adapted cultivars; management and harvest regimes that are good for yields, soils and wildlife; comparative analysis of monocultures and simple mixtures of native grasses; economic implications of growing grasses for fuel feedstocks in specific locations in the northern plains; and conversion options for turning the grasses into useful chemicals and fuels. The core results of this study suggest the following: ? Native grasses, even simple grass mixtures, can be produced profitably in the northern plains as far west as the 100th meridian with yields ranging from 2 to 6 tons per acre. ? Northern adapted cultivars may yield less in good years, but have much greater long-term sustainable yield potential than higher-yielding southern varieties. ? Grasses require very little inputs and stop economically responding to N applications above 56kg/hectare. ? Harvesting after a killing frost may reduce the yield available in that given year but will increase overall yields averaged throughout multiple years. ? Harvesting after a killing frost or even in early spring reduces the level of ash and undesirable molecules like K which cause adverse reactions in pyrolysis processing. Grasses can be managed for biomass harvest and maintain or improve overall soil-health and carbon sequestration benefits of idled grassland ? The carbon sequestration activity of the grasses seems to follow the above ground health of the biomass. In other words plots where the above ground biomass is regularly removed can continue to sequester carbon at the rate of 2 tons/acre/year if the stand health is strong and yielding significant amounts of biomass. ? Managing grasses for feedstock quality in a biomass system requires some of the same management strategies as managing for wildlife benefit. We believe that biomass development can be done in such a way that also maximizes or improves upon conservation and other environmental goals (in some cases even when compared to idled land). ? Switchgrass and big bluestem work well together in simple mixture plots where big bluestem fills in around the switchgrass which alone grows in bunches and leaves patches of bare soil open and susceptible to erosion. ? Longer-term studies in the northern plains may also find that every other year harvest schemes produce as much biomass averaged over the years as annual harvests ? Grasses can be grown for between $23 and $54/ton in the northern plains at production rates between 3 and 5 tons/acre. ? Land costs, yields, and harvest frequency are the largest determining factors in the farm scale economics. Without any land rent offset or incentive for production, and with annual harvesting, grass production is likely to be around $35/ton in the northern plains (farm gate). ? Average transportation costs range from $3 to $10/ton delivered to the plant gate. Average distance from the plant is the biggest factor - $3/ton at 10 miles, $10/ton at 50 miles. ? There is a substantial penalty paid on a per unit of energy produced basis when one converts grasses to bio-oil, but the bio-oil can then compete in higher priced fuel markets whereas grasses alone compete directly with relatively cheap coal. ? Bio oil or modified bio-oil (without the HA or other chemical fraction) is a suitable fuel for boiler and combustion turbines that would otherwise use residual fuel oil or number 2 diesel. ? Ensyn has already commercialized the use of HA in smokey flavorants for the food industry but that market is rather small. HA, however, is also found to be a suitable replacement for the much larger US market for ethanolamines and ethalyne oxides that are used as dispersants. ? Unless crude oil prices rise, the highest and best use of grass based bio-oil is primarily as a direct fuel. As prices rise, HA, phenol and other chemical fractions may become more attractive ? Although we were

Sara Bergan, Executive Director; Brendan Jordan, Program Manager; Subcontractors as listed on the report.

2007-06-06T23:59:59.000Z