Banca de DEFESA: CANDELARIA ESTAVILLO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : CANDELARIA ESTAVILLO
DATE: 28/06/2017
TIME: 08:30
LOCAL: Sala de videoconferência da STI
TITLE:

Linking environmental change and ecosystem processes via response-and-effect functional traits: “The quest for the Holy Grail”

KEY WORDS:

ecosystem functioning; environmental filtering; forest loss; small mammals; trait overlap;  functional traits; response group; effect group; ecosystem service; landscape change

PAGES: 80
BIG AREA: Ciências Biológicas
AREA: Ecologia
SUBÁREA: Ecologia de Ecossistemas
SUMMARY:

Chapter 1: Traits-based approaches are a promising line of research to understand the effects of environmental change on ecosystem functioning through changes in community dynamics. Even when this framework represents a fundamental advance in understanding natural systems, many difficulties arouse to its implementation. In this work we detailed three steps that hope will clarify the application of a response-and – effect framework. The procedure was applied to understand the response of small mammals to forest loss and the impacts that the changed community have on forest regeneration and disease spreading. Firstly, the relevant response and effect traits were identified; secondly, the degree of overlap between traits was analyzed through statistical procedures. Finally, a conceptual model linking environmental change and ecosystem processes via overlap of response and effect trait was built. Main advances and difficulties were discussed.

Chapter 2: The current biodiversity crisis, which is mainly driven by habitat loss, raises concern about the future of ecosystems functioning and the services they provide. In this work, a response-and-effect trait framework was applied to predict the effects of forest loss on ecosystem services mediated by small mammals of the Atlantic forest. To this end, statistical procedures were used to group species with similar traits to respond to forest loss, and to impact ecosystem functioning. Responses were translated into effects following the trajectory of functional group abundances along a gradient of habitat loss at the landscape scale. Empirical findings point to the negative effects of forest loss on response groups with certain combination of traits, with the potential of disrupting ecosystem services delivery in more degraded landscapes. The regulating role of diversity in disease transmission can be jeopardized by forest loss, as well as the contribution of the community to forest regeneration.

COMMITTEE MEMBERS:
Presidente - 1099875 - PEDRO LUIS BERNARDO DA ROCHA
Interno - 1576452 - RICARDO DOBROVOLSKI
Interna - ***.779.391-** - BLANDINA FELIPE VIANA - UFBA
Externa à Instituição - MAÍRA BENCHIMOL DE SOUZA
Externo à Instituição - JULIÁN NORBERTO LESCANO