Banca de QUALIFICAÇÃO: EDILANE MARIA DE LIMA EDUARDO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : EDILANE MARIA DE LIMA EDUARDO
DATE: 01/12/2021
TIME: 08:00
LOCAL: Videoconferência online
TITLE:

Morphometric variations of passerines: effects of climatic factors, primary productivity and latitude

KEY WORDS:

Passerines, morphometry, precipitation, primary productivity, diet.

PAGES: 51
BIG AREA: Ciências Biológicas
AREA: Ecologia
SUMMARY:

How the body mass of birds varies as a function of climatic and environmental variables has been discussed in several studies in temperate regions, but little is known about how seasonal variations affect the weight of tropical birds. The objective of this work was to describe the weight variations of 29 species of passerines, to evaluate whether there is a difference in weight between different age and sex, and to analyze whether precipitation, primary productivity, and diet influence passerine weight. Weights were collected between 2010 and 2014 at the Barreira do Inferno Launch Center (CLBI), ParnamirimRN, northeastern Brazil. The average annual precipitation of the region is 1746 mm, concentrated between March and August, and the vegetation is a mosaic of herbaceous, shrub and restinga forest. The precipitation data are from the CLBI weather station, and the NDVI (Normalized Difference Vegetation Index) was extracted from the SatVeg website (www.satveg.cnptia.embrapa.br) and used as a proxy for primary productivity. We performed t-tests to assess differences in weights between sex and age, and linear regressions to assess whether precipitation and NDVI from the month of capture and months prior to collection influence the weight of individuals. Using standardized weight (Z-score) we saw that juveniles were lighter than adults. We did not detect significant differences in weight between males and females. Rainfall in the month prior to collection and NDVI in the month of collection were the temporal variables that most influenced the weight of adult passerines, while the weight of juveniles was not influenced by temporal variables. The guilds were also influenced by the precipitation of the month before and NDVI of the month of collection, being the insectivorous species the only ones in which the weight did not correspond to the precipitation of the month before.

BANKING MEMBERS:
Interno - 1545394 - FULVIO AURELIO DE MORAIS FREIRE
Externo à Instituição - JOÃO PAULO TAVARES DAMASCENO
Presidente - 1439088 - MAURO PICHORIM