332 research outputs found
Is Janzen-Connell hypothesis valid in temperate forests (Biological Interactions in Arable Land-Grassland-Forest Continuums and their Impact on the Ecosystem Functions, 7th International Symposium on Integrated Field Science)
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Recent Research Topics in Ecological and Genetic Approaches for Sustainable Forest Management
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Carbon allocation to defense, storage, and growth in seedlings of two temperate broad-leaved tree species (Biological Interactions in Arable Land-Grassland-Forest Continuums and their Impact on the Ecosystem Functions, 7th International Symposium on Integrated Field Science)
Get PDFDistance- and density-dependent seedling mortality and host specific differentiation of the fungal pathogen near the conspecific adult trees in a temperate forest (Biological Interactions in Arable Land-Grassland-Forest Continuums and their Impact on the Ecosystem Functions, 7th International Symposium on Integrated Field Science)
Get PDFHigher seedling mortality of conspecific seedling compared to heterospecific ones beneath the adults for three hardwood species (Biological Interactions in Arable Land-Grassland-Forest Continuums and their Impact on the Ecosystem Functions, 7th International Symposium on Integrated Field Science)
Get PDFConspecific Distance-dependent Seedling Performance and Replacement of Conspecific- by Heterospecific Seedlings in Five Hardwood Species in a Temperate Forest
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A comparative study of acquisition of conditioned response between delayed and trace conditioning paradigm
Get PDFThis study was examined the effects of trace interval on conditioned response between delayed and trace conditioning. Twenty subjects assigned to delayed conditioning group or trace conditioning group. A pure tone was used as CS, and an electric shock of 5 mA was used as UCS. Duration of CS was 10 seconds, and trace interval was 20 seconds. In delayed conditioning group, CS was immediately followed by UCS at CS-offset. In trace conditioning group, CS was followed by trace interval, and UCS was presented after trace interval. Six reinforcements were administered for subjects of both groups. Phasic changing pattern of HR were measured as indices of CR. The results were as follows : (1) In delayed conditioning group, HR during CS presentation showed triphasic changing pattern, while HR in trace conditioning group showed decelerative changing pattern. (2) Before UCS presentation, HR showed triphasic changing pattern both in delayed and trace conditioning. These results indicated that trace interval would affect CR acquisitive process
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