GUEDES, A. F.; http://lattes.cnpq.br/8723083566764043; GUEDES, Andreza Ferreira.
Resumo:
Use of artificial perches in the restoration of degraded area in the Seridó of Paraíba. Environmental desertification is caused by physical and anthropogenic factors, such as
regional morphoclimatic conditions and inadequate agropastoral practices. Nuclear
techniques, such as artificial perches, assist in the restoration of desertified areas through the
dispersal of seeds by birds. In this way, the objective of the present study was to evaluate the
use of artificial perches, arranged in different spacings, in the process of restoration of
degraded area, in Seridó da Paraíba. The experiment was carried out at Fazenda Cachoeira de
São Porfírio, located in the municipality of Várzea-PB, from July 2015 to June 2016. The
design was in randomized blocks, with five treatments represented by different spacings
between the perches: T1: (5,0m x 5,0m), T2: (10m x 10m), T3: (15m x 15m), T4: (20m x 20m)
e T5: (Control). The rainfall of the study area was checked monthly; And seeds, excreta and
miscellaneous, deposited in the perch collectors, were collected in paper bags and weighed in
a precision scale. These seeds were sown in the forest nursery of the CSTR / UFCG, and
identified through specific literature and assistance from experts in the field. The use of
artificial perches by birds was evaluated through monthly visits to the study area. The data
were submitted to analysis of variance and the means were compared by the Tukey test at 5%
of significance. To compare the control treatment to the other treatments the Dunnett test was
applied. During the experimental period, 1121 seeds were collected, and the months with the
highest number of propagules were July (397) and August (367), 2015. For number and
weight of seeds and excreta, the 20m x 20m spacing obtained the highest values. And the
control treatment presented higher mean for miscellaneous. Twelve species of birds were
identified on the perches, belonging to nine families and four orders, predominantly the order
Passeriformes; and most birds (46.15%) are omnivorous. It is concluded that, the artificial
perching nucleator technique is efficient in the restoration of degraded environments,
accelerating the successional process and rescuing the environmental resilience, through the
ecological interaction between open areas and forest fragments.