Análise morfométrica e distribuição espacial de bolachas de praia (Mellita Quinquiesperforata) na baía de Santos
Data
2023-12-08
Autores
Oliveira, Camilla Modesto 
Orientadores
Gusmão, Luiz Felipe Mendes de
Tipo
Trabalho de conclusão de curso
Título da Revista
ISSN da Revista
Título de Volume
Resumo
Os ecossistemas costeiros possuem grande importância econômica e ecológica, já que recursos naturais são constantemente retirados desses locais. No entanto, o estudo sobre esses lugares ainda não mostram os resultados de toda a exploração e apropriação resultante da presença humana. Dentre os ecossistemas costeiros, as praias possuem importância econômica com o turismo, e oferece serviços ambientais como fonte de alimentos para moradores locais e moradia para diversos animais, tanto os que vivem na água, como os peixes, quanto os associados ao sedimento, como poliquetas e bolachas de praia. As bolachas de praia possuem um papel fundamental na ecologia nas praias, sendo desde controladoras de populações de algas, tanto sendo integrantes importantes da teia alimentar desses ambientes. O presente trabalho tem como objetivo de estudar a distribuição espacial desses organismos, além de analisar as medidas morfométricas, como peso, comprimento e largura ao longo da baía de Santos, tendo como referência os canais presentes em Santos. Ao analisar as medidas morfométricas dos 809 organismos encontrados em duas saídas de campo, fevereiro e outubro, a média do comprimento foi de 7,30±1,18 cm em fevereiro para 6,08±1,43 cm em outubro; quanto a largura, em fevereiro a média foi de 6,60±1,06 cm em fevereiro para 5,42±1,28 cm em outubro; já em relação ao peso, os organismos tinham em média 19,57±8,59 g em fevereiro e 19,11±10,31 g em outubro. Além disso, a densidade dos organismos e dos fragmentos também foram contabilizados e analisados e sugerem uma redistribuição dos mesmos ao longo das praias.
Coastal ecosystems have great economic and ecological importance, as natural resources are constantly removed from these locations. However, the study of these places still does not show the results of all the exploration and appropriation resulting from human presence. Among coastal ecosystems, beaches have economic importance with tourism, and offer environmental services such as a source of food for local residents and housing for various animals, both those that live in the water, such as fish, and those associated with sediment, such as polychaetes. and beach cookies. Beach cookies play a fundamental role in the ecology of beaches, from controlling algae populations to being important members of the food web in these environments. The present work aims to study the spatial distribution of these organisms, in addition to analyzing morphometric measurements, such as weight, length and width throughout the Santos Bay, taking as a reference the channels present in Santos. When analyzing the morphometric measurements of the 809 organisms found in two field trips, February and October, the average length went from 7.30±1.18 cm in February to 6.08±1.43 cm in October; as for width, in February the average went from 6.60±1.06 cm in February to 5.42±1.28 cm in October; Regarding weight, the organisms had an average of 19.57±8.59 g in February and 19.11±10.31 g in October. Furthermore, the density of organisms and fragments were also counted and analyzed and suggest a redistribution of them along the beaches.
Coastal ecosystems have great economic and ecological importance, as natural resources are constantly removed from these locations. However, the study of these places still does not show the results of all the exploration and appropriation resulting from human presence. Among coastal ecosystems, beaches have economic importance with tourism, and offer environmental services such as a source of food for local residents and housing for various animals, both those that live in the water, such as fish, and those associated with sediment, such as polychaetes. and beach cookies. Beach cookies play a fundamental role in the ecology of beaches, from controlling algae populations to being important members of the food web in these environments. The present work aims to study the spatial distribution of these organisms, in addition to analyzing morphometric measurements, such as weight, length and width throughout the Santos Bay, taking as a reference the channels present in Santos. When analyzing the morphometric measurements of the 809 organisms found in two field trips, February and October, the average length went from 7.30±1.18 cm in February to 6.08±1.43 cm in October; as for width, in February the average went from 6.60±1.06 cm in February to 5.42±1.28 cm in October; Regarding weight, the organisms had an average of 19.57±8.59 g in February and 19.11±10.31 g in October. Furthermore, the density of organisms and fragments were also counted and analyzed and suggest a redistribution of them along the beaches.
Descrição
Citação
MODESTO, Camilla. Análise morfométrica e distribuição espacial de bolachas de praia (Mellita Quinquiesperforata) na Baía de Santos. 2023. 37 f. Trabalho de conclusão de curso (Graduação em Bacharelado Interdisciplinar em Ciência e Tecnologia do Mar) - Universidade Federal de São Paulo, Instituto do Mar, Santos, 2023.