Banca de DEFESA: EDUARDO FREITAS MOREIRA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : EDUARDO FREITAS MOREIRA
DATA : 09/06/2020
HORA: 14:00
LOCAL: Webconferência (Google Meet)
TÍTULO:

EFFECTS OF LANDSCAPE HETEROGENEITY AND DYNAMICS ON POLLINATORS AND POLLINATION SERVICES

PALAVRAS-CHAVES:

Landscape ecology; Landscape heterogeneity; Landscape dynamics; Pollinators; Pollination service

PÁGINAS: 166
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
SUBÁREA: Ecologia Aplicada
RESUMO:

In the first chapter of this thesis we present a theoretical framework that aims to
contribute to the solution of compatibility problems between the hypotheses of positive effect of
landscape heterogeneity and biological diversity with the hypotheses of habitat loss and fragmentation,
proposing a hierarchical approach for the construction of mechanistic explanations, in addition to the
incorporation of the temporal dimension in a more explicit way in the estimation of landscape
heterogeneity. In the second chapter we discuss the theoretical implications of this framework for the
study of ecological interaction networks, showing how a hierarchical and mechanistic approach can help
to interpret the effects of landscapes on the interaction networks described in the literature. In the third
chapter we present a study on the interaction between the effects of substituting native vegetation for
agricultural areas and the heterogeneity of the landscape on plant-pollinator interaction networks in
Chapada Diamantina-BA, where interaction networks showed a positive response to the proportion of
agriculture, but in less heterogeneous landscapes this relationship is also associated with a loss of
diversity of pollinators in relation to more homogeneous landscapes. In the fourth chapter we explore the
effect of landscape heterogeneity on the stability of the pollination service and the formation of coffee
fruits over time in coffee plantations in Chapada Diamantina - BA. In this chapter we show how more
heterogeneous landscapes favor a more stable pollination service over time and how this stability
promotes higher average productivity, with a 44% increase in fruit formation over a five-year period. We
conclude the thesis by arguing that landscape heterogeneity is fundamental for maintaining more diverse
communities, with more complex plant-pollinator interaction networks and with more stable pollination
services, which promotes greater agricultural productivity over time. In addition, we conclude that there
is empirical evidence that we can expand the application of the same framework beyond pollination
services, including ecosystem services mediated by biodiversity in general.

MEMBROS DA BANCA:
Presidente - 262.945.658-71 - DANILO BOSCOLO - USP
Interno - 3062840 - BRUNO VILELA DE MORAES E SILVA
Interno - 1739395 - EDUARDO MARIANO NETO
Externo à Instituição - MARINA WOLOWSKI TORRES
Externo à Instituição - TEREZA CRISTINA GIANINI - USP