نتایج جستجو برای: eleocharis

تعداد نتایج: 263  

2017
Jenny Yoo Nicola Koper

Grassland songbird populations across North America have experienced dramatic population declines due to habitat loss and degradation. In Canada, energy development continues to fragment and disturb prairie habitat, but effects of oil and gas development on reproductive success of songbirds in North American mixed-grass prairies remains largely unknown. From 2010-2012, in southeastern Alberta, ...

Journal: :Singmulbullyuhakoeji 2022

<i>Eleocharis</i> R. Br. (Cyperaceae) is characterized by unbranched culms, one terminal spikelet, bisexual flowers, and bristly perianths, occurring mainly in circumboreal marshes wetlands. There are about 250 species worldwide, 15 taxa Korea have been recognized. Chromosomes Cyperaceae known to be holocentric, missing constricted centromeres during cell division. For the first tim...

Journal: :Journal of the Brazilian Chemical Society 2006

2007
Sonya K. Auer Ronald D. Bassar Thomas E. Martin S. K. Auer

Biparental care in birds is less common during incubation than in other nesting stages. Males share in incubating eggs in a minority of bird species, and male effort is generally thought to be lower than females when sharing does occur. However, male assistance and incubation efficacy is poorly studied in such species. We examined sex differences in incubation effort in 12 pairs of a species wi...

2009
Harvey E. Kennedy

--After three growing seasons, green ash had produced 7,342 pounds per acre of above-ground dry matter compared to 3,572 for oak. Of the total biomass, ash had 53% in the bole (wood plus bark), 22% in old branches, 21% in leaves and 4% in new growth; oak had 50%, 21%, 24%, and 5% in the same components. These proportions changed after leaf fall. Concentrations of N, P, K, and Mg followed the ge...

Journal: :Advances in virus research 2013
Angus L Dawe Donald L Nuss

The idea that viruses can be used to control fungal diseases has been a driving force in mycovirus research since the earliest days. Viruses in the family Hypoviridae associated with reduced virulence (hypovirulence) of the chestnut blight fungus, Cryphonectria parasitica, have held a prominent place in this research. This has been due in part to the severity of the chestnut blight epidemics in...

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