The boom-bust dynamic of the invader Boccardia proboscidea mediated by sewage discharge: The response of the intertidal epilithic community in the Southwest Atlantic
| Autor: | Griselda Valeria Garaffo, Graciela V. Cuello, Maria Andrea Saracho Bottero, Emiliano Hines, Maria Lourdes Jaubet, Elizabeth Noemi Llanos, Rodolfo Elías |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Population Beta diversity Intertidal zone Introduced species 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences Proboscidea Animals education Ecosystem 0105 earth and related environmental sciences education.field_of_study biology Sewage Ecology 010604 marine biology & hydrobiology Polychaeta biology.organism_classification Pollution Geography Species evenness Nestedness Species richness |
| Zdroj: | Marine pollution bulletin. 164 |
| ISSN: | 1879-3363 |
| Popis: | Biological invasions produce an invader population boom but are often followed by an invader population bust. The decrease of the invader abundance ends with the coexistence of native species and the invader or with repeated boom and bust events. In the southwest Atlantic, the polychaete Boccardia proboscidea invaded the coasts influenced by sewage discharge. We studied the change in the intertidal benthic community during the boom-bust dynamic of the Bo. proboscidea invasion. During the boom, the invader polychaete was dominant forming monoculture reefs. Species richness, diversity, and evenness indices decrease in the boom phase. During the bust of the Bo.proboscidea invasion, the decrease of organic matter allowed Br. rodriguezii to coexist with Bo. proboscidea. Beta diversity comparing boom with the bust phase showed a greater nesting (nestedness component); reflecting a process of species loss. We found that both boom and bust phases of the polychaete Bo. proboscidea invasion were mediated by sewage. |
| Databáze: | OpenAIRE |
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