scholarly journals Influences of gap size on growth of native plants transplanted into an Imperata cylindrica grassland: Does growth form matter ?

2015 ◽  
Vol 41 (1) ◽  
pp. 91-96
Author(s):  
Shinha ABE ◽  
Susumu YAMADA ◽  
Masayuki NEMOTO ◽  
Toshiya OKURO
1998 ◽  
Vol 46 (1) ◽  
pp. 111 ◽  
Author(s):  
S.-I. Ishikawa ◽  
N. Kachi

Shoot population dynamics of Carex kobomugi Ohwi, a rhizomatous perennial sedge with a guerilla-type growth form, dominating on Japanese coastal dunes, were examined to detect factors generating the zonal distribution pattern of the plant species. Relative growth rate of shoot (RGRS) and number of branching shoots formed by a mother shoot in a year (NBr) were measured in three populations occurring at three different distances from the shoreline. In 1992, Carex kobomugi shoots at the most inland site (90 m from the shoreline), where Imperata cylindrica var. koenigii dominated and soil-water salinity is always low, showed the lowest RGRS (0.0172 g g-1 day-1 from April to June and 0.00079 g g-1 day-1 in July) and the smallest NBr (1.3 shoots shoot-1 year–1 averaged for 3 years). Shoots of the species at the most seaward site (40 m from the shoreline), where the soil-water salinity is always higher than that of more inland sites, showed the highest RGRS (0.0228 g g-1 day-1 from April to June and 0.0093 g g-1 day-1 in July) and the largest NBr (2.5 shoots-1). However, Carex kobomugi population at the 40 m site had a high fraction of injured shoots (46% of total shoots sampled), which were recorded as shoots without any greenish above-ground part, and high mortality (0.34) due to temporal flooding of sea water caused by storms. In the intermediate site (70 m from the shoreline), Carex kobomugi had intermediateRGRS and NBr with low injury rate. The NBr value, however, showed a decreasing trend over the 3 years of observation, suggesting deteriorating effects of intraspecific competition on population dynamics. In the spring of the fourth year, shoots of Carex kobomugi at 70 m and 90 m from the shoreline produced 1.2 to 2.0 times higher number of buds per shoot than the 3-year-averaged NBrs. This suggests that some fractions of the buds were terminated or became dormant through intra- and/or inter-specific competition. The sparse distribution of Carex kobomugi at the 90 m site may be dictated by its competitive inferiority to Imperata cylindrica which has a denser root system and an aggressive growth form of a phalanx type.


1995 ◽  
Vol 13 (1) ◽  
pp. 84-89 ◽  
Author(s):  
Ileana Espejel ◽  
Lina Ojeda
Keyword(s):  

2013 ◽  
Vol 14 (1) ◽  
pp. 71-71 ◽  
Author(s):  
R. K. Dumroese ◽  
T. D. Landis ◽  
T. Luna
Keyword(s):  

2020 ◽  
Vol 21 (3) ◽  
pp. 275-280
Author(s):  
Richard Martinson

2017 ◽  
Vol 18 (1) ◽  
pp. 4-19
Author(s):  
Robert Ament ◽  
Monica Pokorny ◽  
Jane Mangold ◽  
Noelle Orloff
Keyword(s):  

2008 ◽  
Vol 10 (1) ◽  
Author(s):  
Lorraine Johnson

Video presentation of the opening keynote address given at the 2007 Greenscapes conference at Brock University (St. Catharines, ON). Lorraine Johnson is the author of numerous books related to environmental issues and gardening, including The New Ontario Naturalized Garden; 100 Easy-to-Grow Native Plants for Canadian Gardens; and The Gardener's Manifesto. In this address Johnson discusses some key ideas relating to the theme of "the garden in the city."


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