Testing of lupine varieties for alkaloids was performed in the period 2006-2010 at the Voke Branch of the Lithuanian Institute of Agriculture in the course of a competitive trial of feeding lupine (Lupinus sp.). Samples of feeding yellow lupine (Lupinus luteus L.) varieties as well as narrow-leaved lupine (Lupinus angustifolius L.) were used. The alkaloid concentration was assessed in the perio...

A dissected-leaved form of Ranunculus repens L. occurs in the temporary limestone lakes (turloughs) across the west of Ireland. Turloughs fill with groundwater for up to 8 months of the year. Under experimental conditions, these turlough populations demonstrated a higher rate of aerial and submerged photosynthesis than populations of the more typical broad-leaved ruderal form. The turlough popu...

In this study, Groenlandia densa (L.) Fourr. (opposite-leaved pondweed), was exposed to prepared stock solution of cadmium and copper with 1.0, 3.0, 5.0 and 7.0 mg L(-1) concentration in certain periods (24, 48, 72 and 96 h) and changing amount of accumulation of plants in depending on time and concentration was measured by atomic absorption spectrophotometer. The results show that under experi...

The forest stock volume (FSV) is one of the crucial indicators to reflect quality resources. Variable selection methods are usually used for FSV estimated models. However, few studies have explored which variable can make selected data set better explanatory and robustness same dominant tree species in different regions after feature variables were filtered by methods. In this study, we chose s...

Relations between crown width and tree height and trunk diameter and tree height were measured for trees of all sizes of six large emergent species (Balizia elegans, Dipteryx panamensis, Hieronyma alchorneoides, Hymenolobium mesoamericanum, Lecythis ampla and Terminalia oblonga) in the lowland tropical wet forest at La Selva, Costa Rica. Thirty to 45 individuals were chosen per species to provi...

Photosynthetic traits suggest that shade tolerance may explain the contrasting success of two conifer taxa, Podocarpaceae and Pinaceae, in tropical forests. Needle-leaved species from Pinus (Pinaceae) are generally absent forests, whereas krempfii, a flat-leaved pine, numerous abundant. Respiration (R) provide additional insight into drivers needle- conifers We measured short-term respiratory t...

Tiny leaf-mining jewel beetle Trachys minutus (Linnaeus, 1758) (Coleoptera: Buprestidae: Trachysini), being a species with wide food specialization and distributed throughout the Palearctic, causes periodic outbreaks in linden plantations. Larvae of tiny mine leaves feed on their tissues, adults crown trees. Up-to-date information obtained during monitoring T. number from end May to beginning S...