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Population dynamics and key stages in two Japanese riparian elements

  • Yuko Kaneko
  • Takenori Takada

Abstract

The vegetative landseapes in riparian forests differ from those in upper hill-slope forests (Hiroki 1987; Oshima et al. 1990; Yamanaka et al. 1993; Sugita et al. 1995; Suzuki et al. 2002). Riparian forests suffer more frequently from disturbance than do upper hill-slope forests because active water channels constitute the most powerful geomorphic processes in riparian areas. (Nakamura 1990; Gregory et al. 1991; Ito & Nakamura 1994; Kaneko 1995). Riparian forests are suitable subjects with which to study the effects of natural disturbance regimes on plant populations. The effects of natural disturbance will vary among plant species in different habitats and may be reflected in the vital rates, i.e., plant growth rate, survival rate, and fecundity. We analyzed the demographic structure and population dynamics of two typical dominant riparian tree species based on census data collected for eight years, from 1989 through 1996, in a cool-temperate forest in Japan. Censuses were conducted of all individuals, from current-year seedlings to mature trees. The results of these long-term demographic studies and matrix analyses provide much new knowledge concerning the demographic parameters and population dynamics of two typical riparian species.

Keywords

Population Growth Rate Riparian Forest Disturbance Regime Vital Rate Floodplain Habitat 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer 2008

Authors and Affiliations

  • Yuko Kaneko
    • 1
  • Takenori Takada
    • 2
  1. 1.Lake Biwa Environmental Research InstituteOtsu, ShigaJapan
  2. 2.Graduate School of Environmental Earth ScienceHokkaido UniversitySapporoJapan

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