01. Universidade Federal Rural de Pernambuco - UFRPE (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/1
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Resultados da Pesquisa
Item Dinâmica comportamental do atobá-marrom (Sula leucogaster) no Arquipélago de Fernando de Noronha(2024-03-05) Morais, Maria Eduarda Serafim de; Carmo, Rodrigo Felipe Rodrigues do; Santos, Lucas Penna Soares; http://lattes.cnpq.br/2928664459774625; http://lattes.cnpq.br/8603161096449726; http://lattes.cnpq.br/2136042887466270Seabirds are important bioindicators of marine ecosystems. Environmental changes, such as climate alterations and anthropogenic factors, affect the occupation and behavior of several species. The Brown Booby Sula leucogaster (BODDAERT, 1783) is one of the resident species in the Fernando de Noronha archipelago, an oceanic island located in the northeast region of Brazil. This study aimed to evaluate the behavioral dynamics of the Brown Booby in different regions of Fernando de Noronha. Data collection took place between September 23 and October 18, 2023, encompassing three sampling sites on the leeward coast (north-northwest face) and three on the windward coast (south-southeast face) of the main island. Visual samplings were divided between 7 am and 5 pm, conducted through scan and focal animal series, with 11 behaviors categorized into four classes: foraging, resting, interaction, and passage. Parameters of occurrence frequency (FO), point abundance index (IPA), and behavior frequency were analyzed. A total of 806 individuals were counted with an FO of 72.5% and an IPA of 10.1 individuals per sampling, across all study period. The windward coast showed higher abundance (max. 55 individuals) compared to the leeward coast (max. 20 individuals), although the occurrence frequency was similar between both (~73%). The highest numbers of individuals were recorded on Sueste and Caiera beaches (windward coast). A pattern of decline in individual abundance throughout the day was observed, as well as a general decrease in behavior frequency, including the quantity of attempts for deep dives. Resting activity predominated (59.6%), followed by foraging (40.1%), interactions (0.3%), and passage (0.1%), with more events occurring in the windward coast for all categories. Behavioral plasticity in seabirds is advantageous in dynamic regions such as marine environments, where prey availability varies greatly. This study helped understand the behavioral patterns of the local Brown Booby population, which is important for the development of effective visitation management strategies in Fernando de Noronha.Item Caracterização dos parâmetros físico-químicos no Arquipélago de Fernando de Noronha como indicador de qualidade de água(2022-05-27) Silva, João Victor Sulino da; Oliveira, Paulo Guilherme Vasconcelos de; Garcia, Gabriel Santos; http://lattes.cnpq.br/9212363423333565; http://lattes.cnpq.br/5700488412022830; http://lattes.cnpq.br/2859159241817877The Fernando de Noronha Archipelago is located in the equatorial South Atlantic and its climate is defined by two well-defined seasons (dry season and rainy season) with hydronidamic variations according to its position to the east or west. A part facing the African coast to the east (“Mar de Fora”) and another part facing the Brazilian coast to the west (Mar de Dentro). The increase in tourist demand in Fernando de Noronha has caused impacts over the years, such as the treatment inadequate effluent and waste dumping at sea. Faced with the need to analyze the different water masses and improve the understanding of the effects of seasonality and effluents on the physicalchemical parameters of seawater this work aimed to analyze and describe the seasonal variation of some physicochemical parameter from seawater from Fernando de Noronha Archipelago and verify that the parameters are in accordance with the Legislation. The samples were collected in places considering the predictors: Season of the year; “Mar de Dentro and Mar de Fora” (position facing West and east to the island respectively); Effluents and Circulation. It was found that all predictors were able to explain the response variables in a significant way, with the season of the year having the strongest effect on the data, followed by the presence of emissaries. The parameters proved to be inappropriate in the places with effluents when compared to the values stipulated in the Brazilian legislation. Based on what was seen in this study, we can identify the need to analyze more frequently Fernando de Noronha Archipelago, maintaining a monitoring of physicochemical and microbiological parameters in order to subsidize conservation actions of aquatic organisms and the well-being of the population that uses the beaches. It is also important to monitor the quality of the outfalls that reach the sea, maintaining a monitoring routine. As well as studying the interactions of parameters with marine life, considering that the island is surrounded by natural pools of great importance for the maintenance of marine life.Item Entre a história e as ruínas: (re) visitando o passado noronhense (século XVIII)(2019-12-10) Silva, Ana Carolina Gama da; Luna, Suely Cristina Albuquerque de; http://lattes.cnpq.br/4941715690112297; http://lattes.cnpq.br/3024527091264728