Erratum: Koeleria macrantha and K. pyramidata (Poaceae): Nomenclatural Problems and Biological Distinctions

1994 ◽  
Vol 19 (3) ◽  
pp. 485 ◽  
Author(s):  
Lois A. Arnow
Keyword(s):  
Koeleria Macrantha

Slope, aspect, and slope position as factors controlling grassland communities in the coulees of the Oldman River, Alberta

1987 ◽  
Vol 65 (7) ◽  
pp. 1371-1378 ◽  
Author(s):  
V. J. Lieffers ◽  
P. A. Larkin-Lieffers
Keyword(s):  
Environmental Variables ◽  
Bouteloua Gracilis ◽  
Slope Position ◽  
Slope Aspect ◽  
Artemisia Frigida ◽  
Energy Aspect ◽  
Koeleria Macrantha ◽  
Stipa Comata ◽  
Direct Ordination ◽  
Oldman River

Vegetation and environmental variables were examined in some coulees of the Oldman River near Lethbridge, Alta. Principal components analysis of environmental variables indicated that solar energy, aspect, soil Mg2+, [Formula: see text], and moisture were related to the first axis of variation. Slope position, soil [Formula: see text], moisture, K+, [Formula: see text], and amount of bare ground were related to a second axis of variation. There was a large range in species diversity among plots; most diverse plots were on north-facing slopes. Direct ordination of vegetation data indicated that slope position and aspect were most important in describing distribution of species. Koeleria macrantha, Bouteloua gracilis, Stipa comata, and Artemisia frigida were found on most coulee positions. Hymenoxys richardsonii, Machaeranthera grindeloides, Astragalus spatulatus, and Eriogonum flavum were mostly restricted to summit and upper slope positions. Anemone patens, Geum triflorum, Thermopsis rhombifolia, and others were most abundant on north- and east-facing slopes. Fewer species (e.g., the C4 Aristida longiseta and the cactus Coryphantha vivipara) were mostly confined to south-facing positions.

scholarly journals Plants with Horticultural and Ecological Attributes for Green Roofs in a Cool, Dry Climate

HortScience ◽  
2019 ◽  
Vol 54 (10) ◽  
pp. 1703-1711
Author(s):  
John Erwin ◽  
Jonathan Hensley
Keyword(s):  
Plant Species ◽  
Panicum Virgatum ◽  
Green Roof ◽  
Weather Conditions ◽  
Green Roofs ◽  
Dragon’S Blood ◽  
Ecological Attributes ◽  
Koeleria Macrantha ◽  
Cold Hardy ◽  
Well Data

Green roofs are building surface treatments where plants are grown in medium on a rooftop to cool or insulate buildings and/or to ameliorate negative environmental impacts of buildings. We initiated a 2-year study to characterize medium and weather conditions on a rooftop in a cool-dry climate and to identify plant species with horticultural and ecological attributes that survive and thrive on an unirrigated semi-intensive green roof in a cool-dry climate. Eighty-eight cold-hardy, drought-tolerant species with horticultural or ecological attributes were identified and planted into 12.7-cm-deep medium in trays that were placed on a rooftop. Medium temperatures and moistures were recorded, and plant survival and vigor were quantified. Hourly medium temperatures varied from –22.3 to 43 °C. Monthly medium water moistures varied from –2.5 to –73.3 kPa from May to September, and from –7.6 to –195 kPa from October to April. Monthly air temperature, relative humidity and irradiance varied from –9.4 to 21.7 °C, 44% to 80%, and from 206 to 1222 μmol·m−2·s−1. Mean survival scores decreased (4 = 100% survival) from 2.6 with grasses, to 2.3 with succulents, to 1.8 with temperate perennials, to 0 for geophytes (all died). Among grasses, Festuca ovina VNS, Koeleria macrantha 07-901 ND, Panicum virgatum, and Sporobolus heterolepis performed well. Among succulents, Sedum acre, S. album ‘Coral Carpet’, S. cauticola ‘Sunset Cloud’, S. ‘Czar’s Gold’, S. ellecombianum, S. hybridum ‘Immergruchen’, S. requieni, S. sexangulare, S. spurium ‘Dragon’s Blood’, ‘John Creech’, ‘Pearly Pink’, ‘Ruby Mantle’, and ‘Tricolor’ performed well. Among temperature nonsucculent perennials, Allium ceranum and senescens ‘Glaucum’, Geum triflorum, Talinum calycinum, and Thymus praecox ‘Red Creeping’ performed well. Data on Sedum suggested that medium-low temperature was more limiting to survival than moisture level. The differences in species that performed well here, compared with other studies, underscores the importance of regionally specific green roof plant species studies.

scholarly journals Additions to the «Flora...» by P. F. Maevsky (2014) for the Penza Region

2021 ◽  
Vol 21 (2) ◽  
pp. 179-184
Author(s):  
Vladimir M. Vasjukov ◽  
Keyword(s):  
Plant Species ◽  
Vascular Plant ◽  
European Russia ◽  
Vascular Plant Species ◽  
Koeleria Macrantha

Records of 94 vascular plant species from the Penza Region published before 2013 are missing from the 11th edition of the «Flora of the Central Part of European Russia» by P. F. Mayevsky (2014). An additional 22 species were discovered in the region recently. At least 29 species known in the Penza Region are completely missing from the «Flora…» – Stellaria subulata Boeber ex D. F. K. Schltdl., Polygala vaillantii Bess., Lotus zhegulensis Klokov, Astragalus olgianus Krytzka, Alchemilla hians Juz., Alchemilla homoeophylla Juz., Alchemilla lessingiana Juz., Alchemilla macrescens Juz., Alchemilla mininzonii Czkalov, Alchemilla pustynensis Czkalov, Alchemilla schmakovii Czkalov, Alchemilla tichomirovii Czkalov, Alchemilla tzvelevii Czkalov, Alchemilla vorotnikovii Czkalov, Jurinea charcoviensis Klokov, Carduus stenocephalus Tamamsch., Pilosella suecica (Fries) F. W. Schultz et Sch. Bip., Artemisia nitrosa Weber ex Stechm., Thymus goginae Vasjukov, Glandularia tenuisecta (Briq.) Small, Typha × soligorskiensis D. Dubovik, Juncus turkestanicus V. Krecz. et Gontsch., Koeleria dubjanskyi Tzvelev, Koeleria macrantha (Ledeb.) Spreng., Koeleria spryginii Tzvelev, Koeleria valdevestita Tzvelev, Agrostis breviramea (Roshev. ex Tzvelev) Kurczenko, Festuca spryginii Tzvelev, Echinochloa tzvelevii Mosyakin ex Mavrodiev et H. Scholz. A list of additions based upon specimens and published references is presented.

Threatened dry grasslands in the continental boreal forests of Wood Buffalo National Park: commentary

1999 ◽  
Vol 77 (7) ◽  
pp. 913-917
Author(s):  
Kevin P Timoney
Keyword(s):  
Boreal Forests ◽  
National Park ◽  
Ecological Factors ◽  
Clear Understanding ◽  
Dry Grasslands ◽  
Calamagrostis Canadensis ◽  
Koeleria Macrantha ◽  
Hordeum Jubatum ◽  
Wood Buffalo National Park ◽  
Agropyron Trachycaulum

There are three primary types of graminoid-dominated communities in or near Wood Buffalo National Park, Canada: freshwater meadows and marshes composed of Calamagrostis canadensis (Michx.) Beauv., Carex atherodes Spreng., Carex aquatilis Wahlenb., Scolochloa festucacea (Willd.) Link, and Poa L.; saline meadows composed of Hordeum jubatum L., Puccinellia nuttalliana (Schult.) A.S. Hitchc.,Agropyron trachycaulum (Link) Malte, Calamagrostis stricta (Timm) Koeler, and Calamagrostis inexpansa A. Gray; and dry grasslands composed of Agropyron trachycaulum, Stipa L., Carex siccata Dewey, Carex obtusata Lilj., and Koeleria macrantha (Ledeb.) J.A. Schultes f. Except for the Peace Point area, it is not known whether dry grasslands have declined in areal extent. Including various wetlands under "dry grasslands", and concluding that these areas no longer support dry grassland is misleading. Dry grasslands exist in Wood Buffalo National Park, but most graminoid-dominated communities in the park are, and have been, freshwater and saline meadows and marshes. A clear understanding of the ecological factors operating in these different ecosystems is critical to informed management.Key words: fire, grassland, prairie, vegetation, wetland, Wood Buffalo National Park.

scholarly journals Broad-sense Heritability Estimates of Turfgrass Performance Characteristics in Native Prairie Junegrass Germplasm

HortScience ◽  
2012 ◽  
Vol 47 (9) ◽  
pp. 1228-1233 ◽  
Author(s):  
Matthew D. Clark ◽  
Eric Watkins
Keyword(s):  
Block Design ◽  
Performance Characteristics ◽  
Broad Sense ◽  
Lateral Spread ◽  
Broad Sense Heritability ◽  
Native Prairie ◽  
Crown Density ◽  
Koeleria Macrantha ◽  
Heritability Estimates ◽  
Positive Correlations

Prairie junegrass [Koeleria macrantha (Ledeb.) Shultes] is a perennial, short-grass prairie species distributed throughout the Northern Hemisphere that is being evaluated for use as a low-input turf. In June 2007, 300 genotypes representing collection locations derived from Colorado, Nebraska, and Minnesota germplasm were grown and evaluated 3 years for turfgrass performance characteristics in a randomized complete block design with five clonal replications at two locations (St. Paul, MN, and Becker, MN). After establishment, plots received no supplemental irrigation or fertility and were mowed weekly to a height of 6.4 cm. Broad-sense heritability estimates were calculated on a clonal mean (Hc) and single-plant (Hsp) basis for turf quality (Hc = 0.62, Hsp = 0.13), crown density (Hc = 0.55, Hsp = 0.09), mowing quality (Hc = 0.59, Hsp = 0.09), and genetic color (Hc = 0.45, Hsp = 0.06). The heritability estimates indicate that selection for these traits should result in significant gains in germplasm improvement. Differences were observed in the means and variances among clones, collection locations, and/or collection regions for many of the traits evaluated including rust severity (Puccinia spp.), spring green-up, plant height, lateral spread, vertical regrowth, and flowering traits. The positive correlations among some of these traits and those with moderate heritability estimates should allow for multi-trait selection in cultivar development.

scholarly journals The responses of Briza media and Koeleria macrantha to drought and re-watering

1998 ◽  
Vol 12 (4) ◽  
pp. 665-672 ◽  
Author(s):  
K. J. Milnes ◽  
W. J. Davies ◽  
J. S. Rodwell ◽  
B. J. Francis
Keyword(s):  
Koeleria Macrantha
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