Evaluación del Hábitat que Ofrece el Hospedero a un Bejuco Usado para Extracción de Fibra

Abstract

Studies about the importance of the ecosystem to provide services have focused particularly on regulation services and few ranging support and provisioning services. It has been shown that characteristics of host trees favor the establishment of structurally dependent plants, but the relationship between ecosystems such as forests and providing habitat for nomadic vines, which in turn provide provisioning services such as Non Timber Forest Products –PFNM, is unknown. Thus, we ask if features of the dominant host tree species of oak forest contribute to greater abundance and fiber supply of the nomadic vine Philodendron longirrhizum. The number of individuals, total roots and number and length of harvestable roots of P. longirrhizum by host tree were counted; crops on 93 harvestable roots to estimate the weight of remaining roots sampled were conducted; 11 features over 210 host and non-host individuals of the ten dominant forest species were evaluated, including endangered species Trigonobalanus excelsa; In addition, 639 individuals observed tree in the forest were sampled verifying whether the nomadic vine was present. P. longirrhizum was established in individuals of the most species of the forest and no differences between host and non-host for the variables evaluated in trees were found; on average, 1.4 nomadic vines, 5.1 total roots and 2.8 harvestable roots, which represent 0.03 kg of fiber processed by host tree, were observed; the abundance of nomadic vines was not related to the characteristics of host trees, but the fiber supply itself was associated with the size and the host tree species. The provision of habitat from the oak forest as support service occurs at a generalist level (basic specificity), since a wide range of attributes of the most of its species guarantees the presence of nomadic vine. The generation of the provisioning service (NTFP) occurs through the structural specificity to the host species and characteristics to express their size in relation to the fiber supply and not to the abundance of nomadic vine. Management activities of P. longirrhizum could have two directions: (1) to establish individuals on trees of the most forest species when the purpose is the enrichment or (2) on individuals of larger sizes of the species T. excelsa, Cl. multiflora, H. huilensis y P. macrophylla when the purpose is the production of fiber.