Florística and fitossociological structure of ciliar bush in the basin of the river Goiana-PE. / Florística e estrutura fitossociológica de mata ciliar na Bacia do Rio Goiana PE.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The importance of the preservation or restoration of the forests to the long one of the rivers, as also, around of lakes, springs and reservoirs is based on the ample specter of benefits that this type of vegetation brings to the ecosystem, exerting protective function on the bióticos and abióticos natural resources. In this context, the study it was carried through in four fragmentos, remainders of ciliar bush, by means of florístico-fitossociológico survey, located respectively in four pertaining rivers to the basin of the River Goiana, Zone of Mata North of the State of Pernambuco: I break up of Mata of the Alcaparra, in the River Tracunhaém; I break up of bush of the Guararema, in the River Capibaribe Mirim; I break up of bush of Águas Tortas, in the River of Águas Tortas; e, I break up bush of the Eng Água Azul, in the River Cruangi. Being thus, the objective was to evaluate the conditions that if find these fragmentos in florística terms and structure. The arbóreos individuals had been mensurados in the level of inclusion of circumference the height of the chest (CAP) 15 cm had been distributed to the long one of the edges of each river, 11 parcels of perpendicular form to the river, of 10,0 m X 24,0 m (240 m2), totalizing an area amostral of 10.560 m2. The parcels had been distributed of systematic form, to a distance between them of 15,0 m, and inside of each parcel three sub-parcels of 10,0m X 8,0 m had been leased and analyzed in accordance with distance of the water course. The esteem fitossociológicos parameters had been: the frequency, density, dominância, value of importance. Of the studied areas, three are forests park semi-deciduais and one ombrófila dense. 1089 individuals, being 199 in the bush of the Alcaparra had been showed, 282 in thebush of the Guararema, 278 in the bush of Águas Tortas and 330 in the bush of the Eng Água Azul. In the carried through florístico survey in the bush of the Alcaparra, 29 species, distributed in 14 sorts and 29 botanical families had been observed. In the bush of the Guararema, 36 species, distributed in 30 sorts and 18 botanical families met. In the bush of Águas Tortas, 41 species, distributed in 36 sorts and 20 botanical families were gotten. In the bush of the Eng Água Azul, 63 species, distributed in 51 sorts and 28 botanical families had been observed. The indices of joined Shannon-Wiener diversities had been of: 2,56; 3,08; 3,06 and 3,69 nats/ind., respectively in the order of the worked areas. The similarity of the studied areas could be observed that the bushes of the Alcaparra, Guararema and Águas Tortas are distinct in relation to the bush of the Eng Água Azul. Having a bigger necessity in recouping the bush of the Alcaparra, for if dealing with I break up it that it suffers to greater effect from antrópicas actions. The comparison inside of the parcels, in the bush of the Alcaparra, had greater similarity of the species, between sub-parcels B and C, in the bush of the Guararema, enters the sub-parcels and C, in the bush of Águas Tortas, between sub-parcels B and C and in the bush of the Eng Água Azul enters the sub-parcels and the B.

ASSUNTO(S)

mata ciliar pernambuco(br) ciências florestais bacia hidrográfica fitossociologia recursos florestais e engenharia florestal goiana,rio(pe)

ACESSO AO ARTIGO

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