01. Universidade Federal Rural de Pernambuco - UFRPE (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/1
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6 resultados
Resultados da Pesquisa
Item Levantamento e caracterização dos macroinvertebrados bentônicos do naufrágio Pirapama (PE)(2022-10-07) Bezerra, Natanael Cicero Cavalcanti; Amaral, Fernanda Maria Duarte do; Santos, José Carlos Pacheco dos; http://lattes.cnpq.br/2185193566880590; http://lattes.cnpq.br/7026011892824176; http://lattes.cnpq.br/6395940424269126Coral reefs have great biodiversity, serving as a shelter, nursery and feeding place for several species of vertebrates and invertebrates. As with natural reefs, the consolidated artificial substrate character gives these structures the ability to recruit larvae from the most diverse marine organisms. For this reason, these artificial ecosystems have been described as facilitating the arrival of exotic species to the coast. Thus, the objective was to carry out a survey and characterization of the benthic macroinvertebrate community of the centenary Naufrágio Pirapama, seeking to classify it according to its occurrence status, geographic distribution and trophic groups, as well as to compare these data with the results published ten years ago in similar research on the same shipwreck, allowing a temporal evaluation of this community. The entire structure of the wreck was observed through scuba diving, and sessile and sedentary macroinvertebrates were recorded with the aid of underwater cameras, pencils and PVC plates. All individuals were photographed and/or filmed in as much detail as possible, with all data being recorded in situ for their classification and location in the wreck. Minimal collections were performed with the aid of a hammer, chisel, Zip Lock plastic bags, nylon clamps and conditioned in 70% or 95% alcohol. In the laboratory, all fauna was identified at the lowest possible taxonomic level, with the help of microscopes, specialists and pertinent bibliography, and all species characterization was done through specific academic literature. In total, 44 taxa distributed among the phyla Cnidaria, Echinodermata, Annelida, Porifera, Arthropoda, Chordata, Mollusca and Bryozoa were identified. Compared to the 2010 survey, of the 76 taxa, 31 of them were not registered, but, on the other hand, there were 12 new ones for the shipwreck. Currently, three trophic groups were observed (Suspensivores, Detritivores and Carnivores), while for the previous check-list, in addition to these, the Herbivore and Omnivore groups were recorded. For both periods, the Filtered suspensivores showed a predominance greater than 80%. Regarding its status, the evaluated community showed a predominance of cryptogenic and native species from 2010 to the present, with only three non-invasive exotic species: the octocoral Carijoa riisei, the red lobster Panulirus argus and the barnacle Balanus trigonus. All organisms currently observed in the Pirapama wreck are commonly reported from the Brazilian coast and Pernambuco coast, making the benthic macroinvertebrate community of the studied artificial reef very similar to those observed in coastal reef environments.Item Mudanças na comunidade macrobentônica associada à atividade de bioturbação do camarão Neocallichirus maryae Karasawa, 2004 na Praia de Mangue Seco, Igarassu - PE(2020-01-27) Brito, Joyce Carina Barbosa; Carvalho, Mônica Lúcia Botter; Marinho, Nidia Cristiane de Mélo; http://lattes.cnpq.br/9994922802609034; http://lattes.cnpq.br/1762304533046987; http://lattes.cnpq.br/4492135358829944Benthic biodiversity is responsible for providing various ecosystem services to the environment, and from it arises a trophic base that helps maintain these services and the quality of human life. However, several processes can change this dynamic, since the species that inhabit the benthos are sensitive to environmental changes. In this work we will focus on a natural activity that can change the properties of sediments, called bioturbation. It is pointed out as a natural activity that disturbs the environment by disturbing sediment particles in the modeling of their burrows. This process is well studied in terrestrial environments and in other taxonomic groups. However, more research is still needed on the effects of bioturbation carried out in the process of excavation of Axiidea crustaceans in beach environments, areas of great ecological and economic value for the livelihood of riverside families and the like. Thus, the present study aims to evaluate the effects of spatial changes in the macrofauna community associated with the presence of the burrowing shrimp Neocallichirus maryae Karasawa, 2004. The work was carried out on the beach of Mangue Seco, in the municipality of Igarassu, in the north coast of the state. from Pernambuco. We defined four types of treatments between proximity and depth of samples. We collected 7 samples close to the gallery opening (P) and distant from the gallery opening (L), with a distance of 50 cm between them. These samples were divided into two strata: shallow (0-5cm) and deep (5-10 cm). Thus, our treatments were: Near (P) and Far (L) from the opening of galleries. And two stratum levels of the samples: Superficial (0-5 cm) and deep (5-10 cm). We observed differences in abundance between the sample extracts, which were accounted for. We found a total of 149 organisms in total. Which, separated by the respective treatments, were collected: 3 organisms in the Deep treatment (5-10 cm), 71 organisms in the Superficial treatment (0-5 cm), 8 organisms in the Far treatment (L) and 66 organisms in the Near treatment ( P). The presence of shrimp N. maryae demonstrated a direct influence on the composition of the macrofauna, on the treatments close to the gallery of N. maryae and on the superficial areas of the sediment. Which leads us to believe that other factors such as the biotic and abiotic properties of the beach have influenced the distribution of benthic organisms. Further studies are needed to measure how anthropic impacts may have influenced our results and to show the role of ecosystem engineering in burrower shrimp bioturbation activity. This research brings insights on bioturbation related to macrobenthic communities, which can serve as a source for future studies on the effects of bioturbation on benthic organisms, which are still very scarce.Item Distribuição espaço-temporal da meiofauna em uma praia arenosa tropical(2022-10-03) Oliveira, Bruna Rodrigues Fidelis de; Guilherme, Betânia Cristina; http://lattes.cnpq.br/3131730022364100; http://lattes.cnpq.br/8456510680790890Sandy beaches have a high biodiversity and protect one of the most extent environments throughout the Brazilian coast. Presenting a fauna of invertebrates that are resistant and adapt to various changes. Meiofauna is projected by invertebrate metazoan organisms that measure 0.044 mm and 0.5 mm. The research aims to characterize the space-time structure of the medium-phained community based on composition and abundance. The collections were performed on Cup beach during the sea bass and two perpendicular transects were chosen to the waterline and equidistant in 100 meters. In each transect, four average collection points were defined in three portions (upper, middle and lower) and one in shallow infralitoral. In each of these points three replicated medium and additional replicated replicated were collected for analysis of particle size factors, using a 9.6 cm2 internal PVC cylindrical witness. As a sample of the biological material were added to 4% - prepared saline plastic pots. Meiofauna samples were washed through the overlapping geological sieves set, with 500 μm and 45 um laboratory mesh intervals and treches on Dolfuss plates under stereomicroscope for screening and identification of the middle -phanainistic organisms present. The half -black was composed of 11 taxa being: Nematoda, Copepoda, Polychaeta, Oligochaeta, Acoela, Acari, Gastrotricha, Ostracoda, Nemertea, Tardigrated and Amphipoda. The Nematoda group was the most abundant in both months. The total density of months,being higher, varied between the months (July and August) and lower in the dry period (September and November). Among the areas, average and infralittoral medium litoral stand out for the highest densities of organisms. Permanova's result also confirmed the significant differences in the meiofauna community between the months, transects and zones of the nMDS figures viewer. Among the abiotic variables, they confirm the average grain size that stands out having an influence of 68% of the meiofauna community.Item Diversidade da comunidade associada à Carijoa riisei em naufrágios de diferentes profundidades em Pernambuco(2019-12-10) Oliveira, Camilla Silva de; Gomes, Paula Braga; http://lattes.cnpq.br/3289333472399959; http://lattes.cnpq.br/7484128728382844The octocoral Carijoa riisei is distributed in the Western Atlantic Ocean, Pacific, Caribbean and most recently in Mexico, it can be found at depths of more than 30 meters, including in Pernambuco shipwrecks. This species has an arborescent estolonial structure that provides a favorable environment for the development of various organisms, among which are macroinvertebrates, organisms of utmost importance for ecosystem processes. This work aims to investigate if the difference in depth between Pernambuco shipwrecks influences the fauna composition associated with C. riisei. The octocoral samples were collected in four Pernambuco shipwrecks located in the Pernambuco Artificial Shipwreck Park, in Recife, with different depths (between 20 and 30 meters), during the dry (December) and rainy (July) seasons of 2018, using SCUBA equipment. Later, in the laboratory, the colonies passed by washing processes and the macrofauna was retained in a 250 μm sieve, sorted, counted and identified to the smallest possible taxonomic group. In total, 3143 individuals associated with C. riisei were collected, distributed in 52 taxa. The Amphipoda and Polychaeta groups were the most representative in all shipwrecks, with a relative abundance of 66% (dominant taxon) and 22% (slightly rare taxon), respectively. The Taurus shipwreck had a higher species richness associated with the octocoral colonies than the other shipwrecks, especially during the rainy season. The composition of the associated fauna was different among the shipwrecks, but the difference in depth between the shipwrecks was not relevant for this differentiation. Therefore, other abiotic factors may have been responsible for this difference in species richness and composition among shipwrecks.Item Variação espacial da macrofauna bentônica em uma praia urbanizada no litoral norte de Pernambuco(2021-07-13) Ximenes, Falber Fado Araújo Pina; Carvalho, Mônica Lúcia Botter; http://lattes.cnpq.br/1762304533046987; http://lattes.cnpq.br/6318894893166992Item A relação entre Carijoa riisei (Cnidaria, Octocorallia) e a comunidade da meiofauna com ênfase em nematoda em dois naufrágios do Atlântico Sul(2019-12-12) Silva, William Johnson da; Guilherme, Betânia Cristina; Gomes, Paula Braga; http://lattes.cnpq.br/3289333472399959; http://lattes.cnpq.br/3131730022364100; http://lattes.cnpq.br/1055946306253948This is the first study that sought to understand the influence that Carijoa riisei has on the meiofauna and nematode community, we start from the hypothesis that the colonies of this octocoral may increase the abundance and/or diversity of the meiofauna in comparison to areas without C.riisei. In addition, we believe that there is a difference in some trophic groups of the nematode community for a particular sedimentary or the structure of the octocoral. Our results indicated that there is a direct and significant relationship between the meiofauna community found in the sediment of the shiwrecks and that associated with the colonies of C. riisei, this pattern was also observed for nematode community. The highest values of abundance as well as diversity and evenness were observed in the octocoral community, it was also possible to verify significant difference between the dry and rainy periods. Trophic groups had a preference for certain habitat, and were also influenced by seasonal variation. In summary, from 839 individuals found, 652 were associated with the octocoral structure, and only 184 in the adjacent sediment. Future information regarding biogeographic patterns and migration indices may contribute significantly to a better understanding of the relationship between organisms as substrate and the fauna living within.