Ecofisiologia de Allagoptera arenaria (Gomes) Kuntze no processo de restauração de área degradada em restinga

• Autor(a) principal: Gasparini Júnior, Alcemar José
• Data de Publicação: 2021
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/15937
• topic: Agronomia; Crescimento; facilitação ecológica; fatores abióticos; restauração da paisagem; subject.br-rjbn

The Allagoptera arenaria (Gomes) Kuntze palm is a key species in restinga restoration. It is a pioneer species and ecologically considered a facilitator plant promoting the entry and survival of other species that use the environment under its canopy as a filter, attenuating the environmental stress characteristic of restingas. To verify the role of plant facilitating A. arenaria, seedlings of the species Dalbergia ecastaphyllum (L.) Traub (Rabo de Bugio) and Eugenia uniflora L. (Pitanga) were planted in two positions: 1 – Inside the thicket of A. arenaria (MOITA) and, 2 – In an open area, without vegetation (OPEN AREA). After 1 year the following parameters were verified: mortality, biometry, biomass, photosynthetic pigments and chlorophyll a fluorescence. The data obtained, in the two planting positions were compared by the T test at 5% probability. The analyzes were performed using the R software. The results indicated that A. arenaria significantly influenced the increase of the averages of the parameters analyzed in the bush planting position, confirming the hypothesis that this species exerts ecological facilitation, improving the performance of transplanted seedlings under your cup. Another important aspect is to know how A. arenaria grows and develops in a natural environment? To answer this question, we performed morphophysiological analysis on three populations with different planting ages in a natural environment. The restoration planting was used at Degredo beach in Linhares ES, where two plantings were carried out: G II: planting in 2011 (7 years) and, G III: planting in 2014 (4 years). The GI consisted of seedlings provided by the nursery for planting with (8 months). The data were subjected to analysis of variance and compared by the Tukey test at 5% and to verify which components are associated with each group, the PCA (Main Component Analysis was performed. All were performed using the R software. in condition of the field and without cultural care the development of this palm is very slow and unsatisfactory to meet the objectives of a restoration project, we suggest the use of forestry treatments so that the plants present a better development. up an experiment in DBC 4x5x6 (four blocks, five treatments and six repetitions) in a greenhouse to verify the morphophysiological responses of A. arenaria seedlings to different doses of fertilizer NPK 4.14.8 (Control : 0g; Treatment 1: 5g; Treatment 2 : 10g; Treatment 3: 15g and Treatment 4: 25g of NPK 4.14.8 per plant / pot). The regression analysis at 5% probability and by the Tukey test at 5% probability performed in the SISVAR software. It shows that altered the physiologically morph plants, producing more robust and more suitable seedlings to be used in restoration planting in a sandbank environment. We can conclude that A. arenaria is a plant that can be used in restinga restoration plantations, has slow growth in the field and benefits from phosphate fertilization, which produces more developed and robust seedlings.