Model analysis of the effect of environmental fluctuation on the species replacement pattern of pelagic fishes under interspecific competition

1992 ◽  
Vol 34 (2) ◽  
pp. 309-319 ◽  
Author(s):  
Hiroyuki Matsuda ◽  
Tokio Wada ◽  
Yasuhiro Takeuchi ◽  
Yoshiharu Matsumiya
Keyword(s):  
Interspecific Competition ◽  
Model Analysis ◽  
Species Replacement ◽  
Environmental Fluctuation ◽  
Pelagic Fishes ◽  
Replacement Pattern

Successional trends in soil seed banks of abandoned pastures of a Neotropical dry region

2010 ◽  
Vol 27 (1) ◽  
pp. 35-49 ◽  
Author(s):  
Susana Maza-Villalobos ◽  
Celina Lemus-Herrera ◽  
Miguel Martínez-Ramos
Keyword(s):  
Seed Bank ◽  
Tropical Dry Forest ◽  
Woody Species ◽  
Dry Forest ◽  
Herbaceous Species ◽  
Species Replacement ◽  
Old Growth ◽  
Soil Seed Banks ◽  
Old Growth Forest ◽  
Replacement Pattern

Abstract:A chronosequence was used to study seed-bank communities during the first 12 y of tropical-dry-forest regeneration in abandoned pastures in Chamela, Mexico. Prediction that seeds of woody species replace those of herbaceous species during succession was tested and mechanisms of species replacement (facilitation, tolerance, inhibition) were assessed. Four successional categories (three sites each) were considered: pasture (0–1 y since abandonment), early (3–5 y), intermediate (10–12 y), and old-growth forest. At the end of the dry season, 20 cylindrical soil samples (10 cm diameter, 15 cm depth) were randomly obtained within a 20 × 50-m plot in each site. Seeds ≥1 mm were counted and identified. Overall, 2941 seeds and 102 morphospecies (52 taxonomically identified) were recorded. Seed bank density reduced, species diversity remained fairly constant and seeds of herbaceous species were replaced by those of woody species over the chronosequence. A clear species-by-species replacement pattern was detected, as expected under a mechanism of succession by facilitation. Twelve years after abandonment, a diverse seed bank of woody species did exist, indicating a fast recovery of the tropical-dry-forest regenerative potential; nonetheless, the structure and composition of the seed bank was still different from that in the old-growth forest.

Alternative models for species replacement of pelagic fishes

1991 ◽  
Vol 33 (1) ◽  
pp. 41-56 ◽  
Author(s):  
Hiroyuki Matsuda ◽  
Tokio Wada ◽  
Yasuhiro Takeuchi ◽  
Yoshiharu Matsumiya
Keyword(s):  
Species Replacement ◽  
Alternative Models ◽  
Pelagic Fishes

Rasch Model Analysis of Alcohol Use and Problems in Adolescents and Young Adults

2008 ◽  
Author(s):  
Bettina B. Hoeppner ◽  
Christopher W. Kahler ◽  
Kristina M. Jackson
Keyword(s):  
Young Adults ◽  
Alcohol Use ◽  
Rasch Model ◽  
Model Analysis ◽  
Adolescents And Young Adults
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