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- W1991900118 abstract "Human activities such as logging and agriculture can severely damage forest ecosystems by changing forest structure, ecosystem function, and biodiversity. These changes may have long-lasting consequences, which influence forest recovery. We investigated the effect of past human disturbance on the current distribution of an understory, achlorophyllous orchid, Wullschlaegelia calcarata in Puerto Rico's tropical rain forest after 70 yr of recovery. Our study site was the 16-ha Luquillo Forest Dynamics Plot located in the Luquillo Experimental Forest, which has four areas with differing intensity of land use that have been distinguished from variation in canopy cover seen in aerial photographs taken in 1936. We recorded orchids in six 10-m-wide, 500-m-long transects across four different areas of land-use history. We found that the orchid was not present in an area of the plot which had 80 percent canopy cover, which had been minimally impacted by human activity. Tree species composition varied among land-use history areas, and our observations suggested that this variation might be influencing the local distribution of W. calcarata. We also measured leaf litter biomass and identified the leaves of litter in areas with and without the orchid. Litter with a high proportion of Buchenavia tetraphylla leaves had more orchids. Even though human disturbance ceased in 1932, land-use history in the Luquillo Forest still casts a shadow over the distribution of W. calcarata." @default.
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- W1991900118 date "2006-07-01" @default.
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- W1991900118 title "Land-use History Affects the Distribution of the Saprophytic Orchid Wullschlaegelia calcarata in Puerto Rico's Tabonuco Forest1" @default.
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- W1991900118 doi "https://doi.org/10.1111/j.1744-7429.2006.00167.x" @default.
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