As expected, the correlation between the abundance and sampling intensity of tree species was significant and positive (Kendall's rank correlation test; τ = 0.59; p-value<0.001).
The objectives of this study were to determine the influence of intensity of tree thinning on the dry matter yield of herbaceous plants (notably grasses) and to investigate differences in herbaceous species composition between defined subhabitats (under tree canopies, between tree canopies and where trees have been removed).
Seven plots (65 × 180 m) were subjected to different intensities of tree thinning, ranging from a totally cleared plot (0 %) to plots thinned to the equivalent of 10%, 20 %, 35 %, 50%and75%5 % of the leaf biomass of a control plot (100%%) with a tree density of 2711 plants ha-1.
At the block scale, a 20% canopy opening after logging was observed for a logging intensity of 3.5 trees ha−1.
A follow up of the bloom intensity of these trees during their first 12 years (P. L. Forsline and G. M. Volk, pers. comm).
We therefore defined the sampling intensity of a tree taxon as the total number of DSF records for all types of damage (i.e. damage caused by insects, mammals, human activities or abiotic stresses).
In the future, the intensity of debarking of tree would increase if deer density remains at this level or increases.
The same test was performed to assess the relationships between the sampling intensity of a given tree taxon and rank in the nested structures.
Correlation among the pollen types ranged from weakly negative to moderately positive (shown in the Additional file 1: Table S1).> Figure 2 shows the intensity of the level of tree pollens averaged across eleven years.
The article presents the results of the research on a condition, decoration and intensity of growth of different trees in the Volgograd agglomeration parks.
