Banca de DEFESA: RENATO WILIAN SANTOS DE LIMA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : RENATO WILIAN SANTOS DE LIMA
DATE: 23/02/2024
TIME: 14:00
LOCAL: Auditório do IGDEMA
TITLE:

Bambusa vulgaris and Eucalyptus sp. IN AN ATLANTIC FOREST FRAGMENT: IMPACTS ON INVERTEBRATE BIODIVERSITY AND SOIL QUALITY

KEY WORDS:

Soil invertebrate fauna. Exotic species. Edaphoclimatic variables. Soil attributes. Horto Park.

PAGES: 133
BIG AREA: Ciências Humanas
AREA: Geografia
SUMMARY:

The Atlantic Forest stands out for its wide biodiversity of fauna and flora, however it has been impacted by the introduction of exotic species such as bamboo and eucalyptus, easily found in Urban Parks, which can alter the quality of the soil and litter, and consequently the invertebrate biota. The objective was to evaluate the impacts of the introduction of exotic species Bambusa vulgaris and Eucalyptus sp. have affected the biodiversity of invertebrates and soil quality in a fragment of the Atlantic Forest. The research was carried out in Parque do Horto de Maceió, in three areas: Atlantic Forest, Eucalyptus and Bamboo, with 10 points sampled per environment, in the months: May/2022, May and October/2023. To quantify the rate and intensity of damage caused by invertebrate herbivores in the species Paubrasilia echinata (Atlantic Forest), Eucalyptus sp. and B. vulgaris leaves were randomly collected from 10 matrices. Provid traps were used to survey aerial and soil macrofauna. For mesofauna, soil+litter samples were collected with metal rings (diameter=4.8 cm and height=5 cm) at a depth of 0-5 cm and the Berlese-Tullgren extractor method was used. To quantify the accumulation of litter, an iron frame (0.5x0.5 m) was used and the material was sorted, dried in an oven, weighed and the invertebrates were sampled. Soil samples were collected to determine physical and chemical parameters. A chemical analysis of the plant material and litter was carried out (Lignin, Cellulose and Hemicellulose, C, N, P, K. Mg and C:N ratio) and the edaphoclimatic factors (Soil Water Content-CAS, Soil Temperature- TS and RainfallPP). For invertebrates, abundance, richness, Shannon diversity (H) and Pielou uniformity (e) were quantified. All data were subjected to statistical analysis. The results indicate that invertebrate herbivores caused more damage to the leaves of P. echinata, with greater action by suckers during the dry period (October/2023), especially because it is a more palatable species with higher N contents; The soil, aerial and litter macrofauna and mesofauna were impacted by the presence of exotic plant species, since the groups found were homogeneous between areas, demonstrating the adaptation of these organisms to exotic environments. Soil physical parameters such as CC and AD and chemical parameters such as MOT, P, Na, K, Ca, Mg, SB and V were higher in exotic environments, favoring a receptive environment for these invertebrates, inducing a greater presence of groups such as millipedes that feed on decomposing material. The accumulation of litter in the areas of Atlantic Forest>Eucalyptus>Bamboo was attributed to the heterogeneity of plant species, influenced by lower levels of N, P, K, high C:N ratio and higher levels of lignin, which hinder the decomposition of the material. accumulated in the soil and influencing the lower presence of invertebrates; The physical composition of the soil showed few variations between areas, with higher results being seen in CC and AD in Bamboo, demonstrating that the soil in this area retains a lot of water, in addition to soil chemistry, higher levels of MOT, P, K, Ca, Mg, SB and V, due to intense human intervention.

COMMITTEE MEMBERS:
Interno(a) - 1717255 - ANA PAULA LOPES DA SILVA
Interno(a) - 1494403 - KALLIANNA DANTAS ARAUJO
Externo(a) à Instituição - MAYARA ANDRADE SOUZA - CESMAC
Interno(a) - 1574934 - NIVANEIDE ALVES DE MELO FALCAO