Search Results - "Lawton, R. O."

Climatic Impact of Tropical Lowland Deforestation on Nearby Montane Cloud Forests by Lawton, R. O., Nair, U. S., Pielke, R. A., Welch, R. M.

“…Tropical montane cloud forests (TMCFs) depend on predictable, frequent, and prolonged immersion in cloud. Clearing upwind lowland forest alters surface energy…”
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Impact of land use on Costa Rican tropical montane cloud forests: Sensitivity of cumulus cloud field characteristics to lowland deforestation by Nair, U. S., Lawton, R. O., Welch, R. M., Pielke Sr, R. A.

“…Recent studies have shown that there has been a reduction in dry season moisture input from direct interception of cloud water and wind‐blown mist at the lee…”
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Natural disturbance and gap-phase regeneration in a wind-exposed tropical cloud forest by Lawton, Robert O., Putz, Francis E.

“…The patterns and processes of canopy tree death and replacement were studied in the elfin forest of Monteverde, Costa Rica. Natural treefalls and limbfalls in…”
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Lupeol is the cytotoxic principle in the leaf extract of Dendropanax cf. querceti by Moriarity, D M, Huang, J, Yancey, C A, Zhang, P, Setzer, W N, Lawton, R O, Bates, R B, Caldera, S

“…The crude ethanol extract from the leaves of Dendropanax cf. querceti (Araliaceae) from Monteverde, Costa Rica, exhibits cytotoxic activity against Hep-G2,…”
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Wind Stress and Elfin Stature in a Montane Rain Forest Tree: An Adaptive Explanation by Lawton, Robert O.

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A cytotoxic diacetylene from Dendropanax arboreus by Setzer, W N, Green, T J, Whitaker, K W, Moriarity, D M, Yancey, C A, Lawton, R O, Bates, R B

“…The crude ethanol extract from the leaves of Dendropanax arboreus (Araliaceae) from Monteverde, Costa Rica, exhibits cytotoxic activity against Hep-G2, A-431,…”
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An antibacterial vitamin E derivative from Tovomitopsis psychotriifolia by Setzer, W N, Green, T J, Lawton, R O, Moriarity, D M, Bates, R B, Caldera, S, Haber, W A

“…The crude ethanol extract from the leaves of Tovomitopsis psychotriifolia (Clusiaceae) exhibits antibacterial activity against Bacillus cereus, Staphylococcus…”
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Habitat and Host Preferences of Ficus Crassiuscula, A Neotropical Strangling Fig of the Lower-Montane Rain Forest by Daniels, James D., Lawton, Robert O.

“…(1) Ficus crassiuscula, of the subgenus Pharmacosycea, has evolved the strangling habit independently of the better-known strangling figs of the subgenus…”
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Ecological Constraints on Wood Density in a Tropical Montane Rain Forest by Lawton, Robert O.

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Floral essential oil of Guettarda poasana inhibits yeast growth by Cotterill, F.P.D, Fergusson, R.A

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Factors Influencing Reproductive Activity of Juniperus virginiana in the Tennessee Valley by Lawton, Robert O., Cothran, Paul

“…In the dioecious conifer Juniperus virginiana L. reproductive activity and the sex ratio among reproductively active trees are strongly influenced by local…”
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Host preferences of Rhus radicans (Anacardiaceae) in a southern deciduous hardwood forest by Talley, Sharon M., Lawton, Robert O., Setzer, William N.

“…Rhus radicans, a root-climbing liana, is not distributed randomly among potential host tree species in old-growth mixed mesophytic forest on the southern…”
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Impact of land use on Costa Rican tropical montane cloud forests: Sensitivity of orographic cloud formation to deforestation in the plains by Ray, Deepak K., Nair, Udaysankar S., Lawton, Robert O., Welch, Ronald M., Pielke Sr, Roger A.

“…The current study provides new insights into the coupling of land use in lowland and premontane regions (i.e., regions below 1000 m) and orographic cloud…”
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A Phytochemical investigation of Alchornea latifolia by Setzer, William N, Shen, Xiaoming, Bates, Robert B, Burns, Jennifer R, MCClure, Kelly J, Zhang, Ping, Moriarity, Debra M, Lawton, Robert O

“…A phytochemical investigation of the chloroform leaf extract of Alchornea latifolia has been undertaken. Along with the triterpenoids taraxerone, friedelin,…”
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The Breeding Biology of the Brown Jay in Monteverde, Costa Rica by Lawton, Marcy F., Lawton, Robert O.

“…In an expanding population of Brown Jays (Cyanocorax morio) in the Cordillera de Tilaran of Costa Rica, flocks exhibit a broad range of breeding behavior…”
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Impact of land use on Costa Rican tropical montane cloud forests: Sensitivity of cumulus cloud field characteristics to lowland deforestation by NAIR, U. S, LAWTON, R. O, WELCH, R. M, PIELKE, R. A

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Ecological constraints on wood density in a tropical montane rain forest [Costa Rica] by Lawton, Robert O.

“…In a Costa Rican tropical lower montane rain forest the wood densities of canopy tree species are related to the windiness of their preferred habitats, and to…”
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Biogeography of Tropical Montane Cloud Forests. Part II: Mapping of Orographic Cloud Immersion by Nair, Udaysankar S., Asefi, Salvi, Welch, Ronald M., Ray, D. K., Lawton, Robert O., Manoharan, Vani Starry, Mulligan, Mark, Sever, Tom L., Irwin, Daniel, Pounds, J. Alan

“…This study details two unique methods to quantify cloud-immersion statistics for tropical montane cloud forests (TMCFs). The first technique uses a new…”
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Biogeography of Tropical Montane Cloud Forests. Part I: Remote Sensing of Cloud-Base Heights by Welch, Ronald M., Asefi, Salvi, Zeng, Jian, Nair, Udaysankar S., Han, Qingyuan, Lawton, Robert O., Ray, Deepak K., Manoharan, Vani Starry

“…Cloud-base heights over tropical montane cloud forests are determined using Moderate Resolution Imaging Spectroradiometer (MODIS) cloud products and National…”
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Chemical composition of the floral essential oil of Randia matudae from Monteverde, Costa Rica by Setzer, William N., Noletto, Joseph A., Lawton, Robert O.

“…The floral essential oil of Randia matudae Lorence & Dwyer (Rubiaceae) from Monteverde, Costa Rica, was isolated by hydrodistillation in a yield of 0.0243%…”
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