scholarly journals Acorn Dispersal by California Scrub-Jays in Urban Sacramento, California

Western Birds ◽  
2019 ◽  
Vol 50 (4) ◽  
pp. 243-254
Author(s):  
Daniel A. Airola
Keyword(s):  
Ecosphere ◽  
2019 ◽  
Vol 10 (12) ◽  
Author(s):  
Loreto Martínez‐Baroja ◽  
Lorenzo Pérez‐Camacho ◽  
Pedro Villar‐Salvador ◽  
Salvador Rebollo ◽  
Pablo Quiles ◽  
...  

1996 ◽  
Vol 11 (2) ◽  
pp. 187-192 ◽  
Author(s):  
Koichi Soné ◽  
Aki Kohno

Oecologia ◽  
1981 ◽  
Vol 50 (2) ◽  
pp. 231-232 ◽  
Author(s):  
Susan Darley-Hill ◽  
W. Carter Johnson

2010 ◽  
Vol 92 (3) ◽  
pp. 157-161 ◽  
Author(s):  
Hiromi Yamagawa ◽  
Mitsuha Ikebuchi ◽  
Satoshi Ito ◽  
Hiroka Ito ◽  
Ryoko Hirata

2011 ◽  
Vol 12 (5) ◽  
pp. 432-439 ◽  
Author(s):  
Ramón Perea ◽  
Alfonso San Miguel ◽  
Luis Gil
Keyword(s):  

2006 ◽  
Vol 229 (1-3) ◽  
pp. 120-127 ◽  
Author(s):  
Kazuaki Takahashi ◽  
Kaori Sato ◽  
Izumi Washitani

2004 ◽  
Vol 82 (9) ◽  
pp. 1402-1408 ◽  
Author(s):  
Mi Yoon Chung ◽  
Myong Gi Chung

Multilocus, putative allozyme genotypes were mapped and sampled from two local populations of Quercus mongolica Fischer ex Turcz var. grosseserrata (Bl.) Rehder & Wilson (Fagaceae) (each area is 100 m × 100 m, one with Sasa cover (N = 62) versus a second without it (N = 384)) occurring in undisturbed forests near Nogodan, Mount Jiri in southern Korea. Ripley's L-statistics and spatial autocorrelation analysis (a coancestry coefficient, fij) were used to test the prediction that because of low seedling establishment in a population with dense Sasa cover, there would be no spatial aggregation or hyperdispersion of individual trees and little evidence of fine-scale genetic structure in the population. As predicted, the Sasa-covered population showed no evidence of significant aggregation of individuals (P < 0.01) up to an interplant distance of 50 m and a random distribution of putative genotypes in the population. By contrast, the L-statistics conducted in the Sasa-free population indicated significant aggregation of individuals at interplant distances extending from 4 to 50 m. Spatial autocorrelation analysis revealed small but significant (P < 0.01), positive, fine-scale genetic structure extending from 10 to 30 m. A very similar result was obtained from 100 replicates each consisting of 62 trees in the Sasa-free populations by applying rarefaction and bootstrapping. These findings support the hypothesis that ground vegetation such as Sasa spp. has an impact on fine-scale genetic structure. The weak spatial genetic structure found in the Sasa-free population may primarily be due to limited acorn dispersal coupled with overlapping seed shadows and (or) secondary acorn dispersal by rodents.Key words: allozymes, Fagaceae, ground cover, Quercus mongolica var. grosseserrata, Sasa spp., spatial genetic structure.


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