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Neritic Jellyfishes (Cnidaria: Cubozoa and Scyphozoa) from the coast of Rio Gra...
Soares, Marcelo de Oliveira; Morandini, André Carrara; Matthews-Cascon, HelenaFor the entire Brazilian coast, there are 22 published records of scyphozoans. On the other hand, only 35 species of cubozoans were described worldwide, four of them reported for the Brazilian coast. However, little is known about the species of cubozoans and scyphozoans in the Northeastern states of Brazil. The aim of this study was to perform a survey of the jellyfish (Cnidaria: Cubozoa and Scyphozoa) on the ...
Marine hardbottom environments in the beaches of Ceará state, equatorial coast ...
Carneiro, Pedro Bastos de Macêdo; Ximenes Neto, Antônio Rodrigues; Feitosa, Antônio Rodrigues Caroline Vieira; Barroso, Cristiane XerezThis paper is a literature review on marine hardbottom environments (MHE) that emerge in coastal regions in the Brazilian state of Ceará. This stretch of the Brazilian coast houses several rock formations, which are widely distributed in the intertidal zone. These formations have various origins and composition, ranging from crystalline rocks to biogenic structures, but most are composed by sandstones. These su...
Ecological indicators and functional groups of copepod assemblages
Campos, C. C.; Garcia, T.M.; Neumann-Leitão, Sifrid; Soares, Marcelo de OliveiraCopepods are important ecological indicators of ecosystem functioning. In this study, we analyzed the structure of copepod assemblages and cross-shelf patterns based on functional traits and indicator value analysis. Copepod samples were collected from 54 stations distributed along the inner, middle, and outer continental shelves covering a wide geographical area (20,100 km2). Overall, 38 species were identifie...
Diatom accumulations on a tropical meso-tidal beach: Environmental drivers on p...
Franco, Andréa de Oliveira da Rocha; Soares, Marcelo de Oliveira; Moreira, Maria Odete ParenteDiatom accumulations are important phenomena that occur on many sandy beaches worldwide, but little is known about their seasonal occurrence and environmental drivers at lower latitudes. The results revealed that the diatom Anaulus cf. australis and Asterionellopsis tropicalis were accumulated on a tropical beach near the Equator (3 410S; northeastern Brazil). The highest frequency of diatom accu- mulation (81%...
Evaluating ten years of management effectiveness in a mangrove protected area
Almeida, Luiza Teixeira de; Olímpio, João Luís Sampaio; Pantalena, Ana Flávia; Almeida, Beatriz Soares de; Soares, Marcelo de OliveiraCreating protected areas (PAs) intended to counteract the effects of human activities on the environment is a significant step towards conserving coastal and marine ecosystems. Various countries have intro- duced legal mechanisms to create and manage their important ecosystems, such as mangroves. Despite the significance of evaluating the effectiveness of PAs, literature on the topic is scarce, especially per- ...
Increased anthropogenic pressure decreases species richness in tropical interti...
Portugal, Adriana Brizon; Carvalho, Fabrício Lopes; Carneiro, Pedro Bastos de Macedo; Rossi, Sergio; Soares, Marcelo de OliveiraMultiple human stressors affect tropical intertidal sandstone reefs, but little is known about their biodiversity and the environmental impacts of these stressors. In the present study, multiple anthropogenic pressures were integrated using the relative environmental pressure index (REPI) and related to benthic community structure across an intertidal gradient in five sandstone reefs in the tropical South Atlan...
Northward range expansion of the invasive coral (Tubastraea tagusensis) in the ...
Soares, Marcelo de Oliveira; Davis, Marcus; Carneiro, Pedro Bastos de MacêdoInvasive species are recognized as a major threat to marine biodiversity. The scleractinian coral Tubastraea tagusensis has been expanding its range into the southwest Atlantic Ocean, causing negative impacts on marine ecosystems. In 2016, the species was recorded on a shipwreck located 40 km off the Brazilian coast of Ceará State (latitude 2°30′ S), at densities ranging from 16 to 872 colonies × m−2 . This is ...
Primeiro registro de branqueamento no litoral do Ceará (NE-Brasil): Indicador d...
Soares, Marcelo de Oliveira; Rabelo, Emanuelle FonteneleCoral Bleaching is an environmental phenomena that has been used worldwide to demonstrate environmental changes in tropical marine ecosystems. This study reports the first occurrence of coral bleaching for the Ceará coast (NE Brazil). Although the monitoring covers the period from 2005 to 2010 taken on an artificial reef within a port area, and a sandstone intertidal reef, the bleaching event in corals (Sideras...
Effects of salinity on Zoanthus sociatus (Cnidaria: Anthozoa): Is low salinity ...
Soares, Marcelo de Oliveira; Sousa, Leonardo Peres deAbiotic factors, such as variations on salinity, exert influence on the animal distribution in the intertidal zone, including zoanthids. This study evaluated the osmotic, morphological and ethological effects of salinity variations on tropical zoanthid Zoanthus sociatus. In order to analyze the hypothesis of osmotic conformation, the zoanthid was submitted to salinity stress. To estimate the osmotic capabilitie...
Gestão de unidades de conservação marinhas: o caso do Parque Estadual Marinho d...
Soares, Marcelo de Oliveira; Paiva, Carolina Cerqueira de; Freitas, João Eduardo Pereira de; Lotufo, Tito Monteiro da CruzThe importance Protected Areas as a tool for conservation and sustainable resource use has been widely acknowledged. Historically, the concept and management of protected areas was developed with the focus on terrestrial environments. In the past few decades, the Marine Protected Areas (MPA) has gained increasing attention in regards to the management of coastal and oceanic ecosystems. In this context, the envi...