31 documents found, page 1 of 4
How are local fish communities structured in Brazilian semiarid headwater streams?
Rodrigues-Filho, Carlos Alberto de Sousa; Gurgel-Lourenço, Ronaldo Cesar; Bezerra, Luis Artur Valões; Oliveira, Edson Fontes de; Leitão, Rafael PereiraEnvironmental and spatial factors are known as the main determinants of community variation in aquatic organisms. However, historical factors may interact with local processes to regulate community structure patterns. Here we compared historical, environmental, and spatial factors in a multi-scale approach in order to identify the main drivers structuring species composition and functional diversity of fish com...
Fish diversity in tidepools: assembling effects of environmental heterogeneity
Bezerra, Luis Artur Valões; Padial, André Andrian; Mariano, Filipe Brasil; Garcez, Danielle Sequeira; Sánchez-Botero, Jorge IvánTidepools are considered ecosystems of high interchangeable fish biota. However, natural and anthropogenic actions that alter negatively marine ecosystems functioning (e.g., algal exploitation) are causing homogenization of fish biodiversity. Here, we describe the functional and taxonomic assembling of fishes in beach rocks of northeastern Brazil. Traits of fish species were retrieved from Fishbase and beta div...
Ictiofauna associada às macrófitas aquáticas Eichhornia azurea (SW.) Kunth. e E...
Sánchez-Botero, Jorge Iván; Farias, Maristela Lima de; Piedade, Maria Teresa; Garcez, Danielle SequeiraFish fauna associated to aquatic macrophytes Eichhornia azurea (SW.) Kunth. and Eichhornia crassipes (Mart.) Solms. at Camaleão lake, Central Amazonia, Brazil. This research describes the influence of biotic and abiotic characteristics on fish fauna structure that inhabits the stands of aquatic macrophytes Eichhornia azurea and Eichhornia crassipes. 182 individuals were sampled belonging to 27 fish species in C...
Metacommunity organization in an intermittent riverin Brazil: the importance of...
Rodrigues-Filho, Carlos A. S.; Gurgel-Lourenço, Ronaldo C.; Ramos, Eliêta A.; Novaes, José L. C.; Garcez, Danielle Sequeira; Costa, Rodrigo S.Fish diversity is generally high in drainage networks in perennial systems. On the other hand, little is known about the importance of drainage networks in semiarid regions. The scant attention given to rivers in semiarid regions so far may in part be explained by the high intermittency and low ramification of these drainage networks and their incorrect classification as systems of low diversity and productivit...
A multiple hypothesis approach to explain species richness patterns in neotropi...
Vieira, Thiago Bernardi; Pavanelli, Carla Simone; Casatti, Lilian; Smith, Welber Senteio; Benedito, Evanilde; Mazzoni, RosanaSeveral hypotheses are used to explain species richness patterns. Some of them (e.g. species-area, species-energy, environment-energy, water-energy, terrestrial primary productivity, environmental spatial heterogeneity, and climatic heterogeneity) are known to explain species richness patterns of terrestrial organisms, especially when they are combined. For aquatic organisms, however, it is unclear if these hyp...
Áreas verdes públicas urbanas e sua relação com a melhoria da qualidade de vida...
Lima, Sabrina Morais de; Garcez, Danielle SequeiraThis study aimed at identify the functions of Coco River Ecological Park as urban green area of Fortaleza, Ceará, Brazil, and examined how these functions contribute to increase the quality of life of park users. This research interviewed 64 people about the importance of the Coco River Ecological Park. According to the answers provided, it was confirmed the significance of urban green areas for a good quality ...
Análise integrada de unidades geoecológicas relacionadas com as atividades pesq...
Basilio, Thiago Holanda; Garcez, Danielle Sequeira; Bodart, Cristiano das Neves; Silva, Edson Vicente daThis study aims to present an integrated analysis of geoenvironmental units related to fisheries activities in Piúma, southern coast of Espírito Santo state. The units identification were accessed through geo referenced cartographical images, describing information about fisheries activities, uses and occupation, the impacts and the management proposals for each environment. Nine geo environmental units were id...
Caracterização produtiva de um projeto de assentamento rural no semiárido norde...
Baracho, Rossyanne Lopez; Guerrero, Rafael Eduardo Lopez; Garcez, Danielle SequeiraOs assentamentos rurais são unidades de produção agrícola criadas com objetivo de reordenar o uso da terra em benefício dos trabalhadores rurais sem terra ou com pouca terra. Entretanto, é preciso observar se esses cumprem adequadamente sua função após os primeiros anos de instalação. Assim, o objetivo desse estudo foi caracterizar aspectos da produção agrícola do Projeto de Assentamento Maisa, localizado no es...
Relação entre características limnológicas e abundância de peixes em reservatór...
Gurgel-Lourenço, Ronaldo César; Rodrigues-Filho, Carlos Alberto de Sousa; Angelini, Ronaldo; Garcez, Danielle Sequeira; Sánchez-Botero, Jorge IvánTo evaluate possible nycthemeral and seasonal temporal patterns in fish assemblage associated with limnological aspects and biotic factors in two reservoirs in semarid Northeastern Brazil. Methods: Fish were sampled with gillnets in nycthemeral cycles throughout the dry and rainy season in two reservoirs (Paulo Sarasate/PS and Edson Queiroz/EQ). The stomach contents of the predator species were surveyed. The li...
A influência dos componentes geoambientais e das intervenções antropogênicas no...
Cordeiro, Abner Nunes; Garcez, Danielle Sequeira; Bastos, Frederico de HolandaThis paper analyzes the influences of the geoenvironmental components and anthropogenic interventions to the earthflows at the watershed of Pirapora river, located in Maranguape town in Ceará state. These morphodynamic processes are closely related to the geological and geomorphological aspects, hydro-climatic conditions, the situation and physiognomy of vegetation, the geometry of the slopes and the human acti...