Uma abordagem socioecológica para gerenciar a invasão de plantas no rio Pangdan, cidade de Naga, Cebu, Filipinas
DOI:
https://doi.org/10.48017/dj.v10iSpecial_3.3642Palavras-chave:
Indices Bioticos, recuperação de ecossistemas, programa de recuperação de ecossistema, especies vegetaisResumo
A invasão de plantas ameaça as funções ecológicas e a biodiversidade dos ecossistemas ribeirinhos. Várias estratégias de gestão foram propostas para preservar a sua vitalidade ecológica; no entanto, vários desafios são observados em muitos esforços de gestão. Este estudo adotou uma abordagem socioecológica para compreender a paisagem ribeirinha ao longo do rio Pangdan, cidade de Naga, ilha de Cebu, Filipinas. Utilizando o Método Belt Transect-Quadrat, foram avaliados componentes ecológicos, nomeadamente índices biológicos e parâmetros climáticos e de solo; entrevistas semiestruturadas com partes interessadas também foram utilizadas para coletar dados sociais e históricos. Os resultados mostraram um gradiente na diversidade de plantas, com a região a montante apresentando a maior riqueza de plantas nativas (N = 67,57%) e a região a jusante apresentando a menor riqueza de plantas nativas (N = 5,41%). A intensidade da luz e a temperatura surgiram como factores-chave na formação das comunidades vegetais, com a riqueza de espécies nativas e exóticas diminuindo à medida que estes factores aumentavam. As propriedades do solo dentro da faixa examinada tiveram efeitos independentes mínimos na diversidade das plantas. A análise histórica revelou a prevalência de atividades antrópicas, nomeadamente extração, mineração artesanal e introdução de plantas invasoras. O declínio documentado na diversidade vegetal e a prevalência de espécies exóticas levantam preocupações sobre a saúde do ecossistema fluvial. Fornecer dados de base valiosos e compreender o estado actual da zona ribeirinha é crucial para o desenvolvimento de estratégias de gestão eficazes para os ecossistemas ribeirinhos.
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