БҚМУ Хабаршы №1-2019ж.
Table 5. – Abundance (A in thousands of individuals per square meter), number
of species (S), Shannon-Weaver species diversity (H’), Pielou’s community eveness(J’)
in unevenly aged Tilio-Carpinetum in N Poland [27]
Age of Tilio-Carpinetum
16
35
57
80
102
125
Acari
31.16 38.83 28.98 27.51 25.44 37.65
Oribatida 21.83 28.92 18.49 14.42 16.3 24.95
Gamasida
A
6.07
4.9
7.7
3.79
5.36
8.5
S
59
64
52
61
66
66
H’
2.009 3.140 1.929 2.991 2.756 2.056
J’
0.493 0.755 0.488 0.728 0.658 0.492
In Leucobryo-Pinetum stands [28] the density of mite communities increased
from the youngest stand to the 99 years old stand while in the oldest stand it decreased
to the level found in about 60 years old plot (Table 6). The density of Gamasida was
the lowest in the youngest plot and the highest in the oldest one, however, two peaks of
abundance (in 64yo and 134yo stands) were found.
Table 6 –Abundance (A in thousands of individuals per square meter), number
of species (S), Shannon-Weaver species diversity (H’), Pielou’s community eveness
(J’) in unevenly aged Leucobryo-Pinetumin N Poland[28]
Age of Leucobryo-Pinetum
6
14
23
42
63
79
99
134
Acari
22.7
32.6
83.3 101.1 159.3 194.7 197.2 146.8
Gamasida
A
2.0
2.1
2.3
4.5
5.0
4.7
3.5
7.2
S
11
18
17
23
17
20
20
19
H’
1.880 2.334 2.240 2.313 1.860 2.241 1.916 2.061
In younger (6yo and 14yo) stands Zercon zelawaiensis predominated while the
23 years old stand was dominated by Parazercon radiatus (which also dominated in
community inhabiting the oldest stand). Paragamasus runciger dominated in 42 years
old pine forest, 63 and 99 years old stands were most abundantly inhabited by Zercon
triangularis and in 79 years old plot Veigaia nemorensis dominated.Some species
(Ascaaphidioides, Gamasellodes bicolor, Rhodacarus coronatus and Zercon
zelawaiensis) had higher dominance in the younger (6-23 years old) stands when
compared to older stands in which their dominance decreased or they were absent.
Interestingly Zercon zelawaiensis was relatively abundant in younger (6-14 years old)
stands, in older pine forests (23-42 years old) it was evidently less abundant and absent
in other, older stands. Oppositely Zercon triangularis dominated in 63 and 99 years old
stands where the Z. zelawaiensis was absent. Moreover in older stands the higher
dominance of Parasitidae, Uropodidae and Veigaiidae was evident.Trachytes aegrota
(Trachytidae) was also found only in older pine forests [28]. In similar studies of
Kaczmarek et al. [29] a similar trend of abundance was found (Table 7). In the all age
classes the dominant species were Veigaia nemorensis, Paragamasus runcigerand
Parazercon radiatus, and in case of families Veigaiidae, Parasitidae and Zerconidae
the increase of abundance was found during succession, however these families differ
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