Khaya grandifoliola C. DC. (Meliaceae), known as African mahogany, is used in the establishment of commercial plantations for high-value timber production. This work aims to report first occurrence genus Atta a plantation this species. An ant nest mound with 105 m2 loose soil and five active holes were observed. Leaves cut into crescent shaped sections pieces young branches found near these hol...

Hurricane Gilbert struck the northeastern portion of the Yucatan Peninsula in an area where we have been conducting studies of the vegetation and avifauna in a dry tropical forest since 1984. All trees in our study area were completely defoliated and most suffered heavy structural damage. Although few trees were killed outright, many died over the next 17 months, especially those that had been ...

Climate change and rising temperatures have been observed to be related to the increase of forest insect damage in the boreal zone. The common pine sawfly (Diprion pini L.) (Hymenoptera, Diprionidae) is regarded as a significant threat to boreal pine forests. Defoliation by D. pini can cause severe growth loss and tree mortality in Scots pine (Pinus sylvestris L.) (Pinaceae). In this study, log...

Defoliation by the European gypsy moth (Lymantria dispar L.) and subsequent tree mortality have been well documented in the northeastern United States. In this study we evaluate tree mortality after initial defoliation in mixed pine-hardwood stands in the southeastern United States as the range of European gypsy moth expands. In 1993, 46 mature pine-oak and pine-sweetgum stands were selected on...

After defoliation by herbivores, some plants exhibit enhanced rates of photosynthesis and growth that enable them to compensate for lost tissue, thus maintaining their fitness relative to competing, undefoliated plants. Our aim was to determine whether compensatory photosynthesis and growth would be altered by increasing concentrations of atmospheric CO2 , Defoliation of developing leaflets on ...

The PEA (Physiologically Explicit Approach) cotton model is a mechanistic, L-system (Hanan 1997) model of growth processes utilising carbohydrate production, translocation and allocation. In Thornby et al (2003), we used the PEA cotton model to investigate the phenomenon of compensatory growth in partially defoliated cotton seedlings. Experiments showed that the development rate of cotton seedl...

Background and Aims Nebbiolo grapes are used to produce Sfursat wine, following partial dehydration. This research aimed clarify the influence of fruit exposure light postharvest water loss on concentration green leaf volatiles (GLVs) lipoxygenase (LOX) alcohol dehydrogenase (ADH) activity grapes. Methods Results from Control vines (no defoliation) (ND) defoliated at fruitset (DFS) or post-vera...