Banca de QUALIFICAÇÃO: LARISSA NASCIMENTO DOS SANTOS SILVA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : LARISSA NASCIMENTO DOS SANTOS SILVA
DATA : 02/05/2019
HORA: 09:00
LOCAL: Departamento de Ecologia
TÍTULO:

Ecological patterns and butterfly diversity in Tropical Dry forests

PALAVRAS-CHAVES:

richness patterns; geographic distribution; seasonality; diversity; community structure; fragmented landscapes.

PÁGINAS: 70
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

It is known that the dynamics of the assemblies in space and time reflect the adjustment of the biological characteristics of the species to the environmental conditions and to the biotic interactions, according to their adaptive and phylogenetic precursor elements. Although the smallest historical research effort in the dry regions of the globe, scientific research in these areas has increased in recent decades. In addition to the concern with the high rates of conversion of dry forests and savannas in areas of agriculture and wood extraction, it is nowadays known how important these ecosystems are for the maintenance of species, especially in transitional florets with humid environments, as well as issues ecological and adaptive approaches to be investigated. In addition to historical factors, climatic seasonality and resource availability are the abiotic elements that most influence the geographic distribution and regional coexistence of species in these forests. As well, studies have shown that habitat fragmentation and loss are strong modifiers of natural processes and community structure, but natural patterns are unclear. In order to investigate the distribution of butterfly species in dry tropical forests and how environmental elements influence the diversity and dynamics of communities in fragmented landscapes in the Northeast of Brazil, the thesis will be divided into three main thematic axes, respectively: environmental gradients and wealth patterns, fragmentation effects on community structure, and influence of landscape changes on species diversity at different scales. From our results we observe that, there is influence of the environmental gradient and the patterns of wealth are mainly related to the latitude globally and to the altitude, regionally. Butterfly families are found in all biomes that comprise seasonal tropical florets, but their distribution differs between continents and regions, where both the historical issues of rate and environmental evolution must be considered, with emphasis on Australia and Central America by the high number of species. In fragmented landscapes, frugivorous butterflies suffer from the impacts of forest degradation on rural landscapes, and the structure of communities responds to environmental variations in the landscape, as expected. In general, the richness and abundance of butterflies tend to decrease with habitat loss and anthropic pressure, and species composition mainly responds to structural differences between intermediate scale landscapes (up to 5000m), with environmental and biotic complementarities at different scales. In addition, the influence of spatial structure (local and between landscapes) on the diversity and abundance of butterflies was positively associated with the local coverage of arboreal-shrub forest and of country vegetation and habitat heterogeneity, but negatively in more modified environments (pasture and agriculture). Information that is useful in identifying regions and environmental elements to be monitored for biodiversity conservation in fragmented landscapes. In short, we confirm that the system of dry tropical florets is complex and has several important biotic and abiotic elements in determining the patterns of richness and distribution of the species and their habitats.

MEMBROS DA BANCA:
Presidente - 1451741 - MARCIO ZIKAN CARDOSO
Interno - 1718346 - EDUARDO MARTINS VENTICINQUE
Interna - 1914239 - MIRIAM PLAZA PINTO