Patterns of Distribution of Bivalve Populations in a Mediterranean Temporary River
In the south of the Iberian Peninsula, many rivers are intermittent, a state most likely to be exacerbated by climate change, strongly affecting river biota. An additional challenge for native biota in this area is the arrival of new species, frequently aided by humans, and bivalves are particularly...
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MDPI AG
2020-04-01
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| Series: | Diversity |
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| Online Access: | https://www.mdpi.com/1424-2818/12/4/158 |
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| author | Mafalda Gama Filipe Banha Cristina Moreira Henrique Gama Manuel Graça Pedro Anastácio |
| author_facet | Mafalda Gama Filipe Banha Cristina Moreira Henrique Gama Manuel Graça Pedro Anastácio |
| author_sort | Mafalda Gama |
| collection | DOAJ |
| description | In the south of the Iberian Peninsula, many rivers are intermittent, a state most likely to be exacerbated by climate change, strongly affecting river biota. An additional challenge for native biota in this area is the arrival of new species, frequently aided by humans, and bivalves are particularly at risk. Here we assessed whether the native (<i>Unio delphinus</i>) and invasive (<i>Corbicula fluminea</i>) bivalves differed in habitat use. To address this question, we sampled populations of both species in six isolated permanent pools in the same river during summer in three consecutive years. <i>U. delphinus</i> occurred in all pools, while <i>C. fluminea</i> occurred only in the two most downstream pools. <i>U. delphinus</i>, but not <i>C. fluminea</i>, was found preferentially in patches under riparian vegetation cover. Both species were found in similar sediment types (coarse and fine gravel respectively). Although <i>U. delphinus</i> was present in all pools, recruitment was detected only in 2016, in one pool. We concluded that both species have the potential to compete for space, but a well-developed riparian vegetation cover may provide <i>U. delphinus</i> some advantage against <i>C. fluminea</i>. |
| first_indexed | 2024-03-10T20:21:59Z |
| format | Article |
| id | doaj.art-3079556a63454c7fb796198ded902d76 |
| institution | Directory Open Access Journal |
| issn | 1424-2818 |
| language | English |
| last_indexed | 2024-03-10T20:21:59Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Diversity |
| spelling | doaj.art-3079556a63454c7fb796198ded902d762023-11-19T22:05:58ZengMDPI AGDiversity1424-28182020-04-0112415810.3390/d12040158Patterns of Distribution of Bivalve Populations in a Mediterranean Temporary RiverMafalda Gama0Filipe Banha1Cristina Moreira2Henrique Gama3Manuel Graça4Pedro Anastácio5MARE—Marine and Environmental Sciences Centre, Departamento de Paisagem, Ambiente e Ordenamento, Escola de Ciências e Tecnologia, Universidade de Évora, 7000-671 Évora, PortugalMARE—Marine and Environmental Sciences Centre, Departamento de Paisagem, Ambiente e Ordenamento, Escola de Ciências e Tecnologia, Universidade de Évora, 7000-671 Évora, PortugalSOMINCOR—Sociedade Mineira de Neves Corvo, S.A. Santa Bárbara de Padrões, 7780-409 Castro Verde, PortugalSOMINCOR—Sociedade Mineira de Neves Corvo, S.A. Santa Bárbara de Padrões, 7780-409 Castro Verde, PortugalMARE—Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, 3004-517 Coimbra, PortugalMARE—Marine and Environmental Sciences Centre, Departamento de Paisagem, Ambiente e Ordenamento, Escola de Ciências e Tecnologia, Universidade de Évora, 7000-671 Évora, PortugalIn the south of the Iberian Peninsula, many rivers are intermittent, a state most likely to be exacerbated by climate change, strongly affecting river biota. An additional challenge for native biota in this area is the arrival of new species, frequently aided by humans, and bivalves are particularly at risk. Here we assessed whether the native (<i>Unio delphinus</i>) and invasive (<i>Corbicula fluminea</i>) bivalves differed in habitat use. To address this question, we sampled populations of both species in six isolated permanent pools in the same river during summer in three consecutive years. <i>U. delphinus</i> occurred in all pools, while <i>C. fluminea</i> occurred only in the two most downstream pools. <i>U. delphinus</i>, but not <i>C. fluminea</i>, was found preferentially in patches under riparian vegetation cover. Both species were found in similar sediment types (coarse and fine gravel respectively). Although <i>U. delphinus</i> was present in all pools, recruitment was detected only in 2016, in one pool. We concluded that both species have the potential to compete for space, but a well-developed riparian vegetation cover may provide <i>U. delphinus</i> some advantage against <i>C. fluminea</i>.https://www.mdpi.com/1424-2818/12/4/158<i>Unio delphinus</i><i>Corbicula fluminea</i>intermittent riverdry seasonGuadiana basinMediterranean |
| spellingShingle | Mafalda Gama Filipe Banha Cristina Moreira Henrique Gama Manuel Graça Pedro Anastácio Patterns of Distribution of Bivalve Populations in a Mediterranean Temporary River Diversity <i>Unio delphinus</i> <i>Corbicula fluminea</i> intermittent river dry season Guadiana basin Mediterranean |
| title | Patterns of Distribution of Bivalve Populations in a Mediterranean Temporary River |
| title_full | Patterns of Distribution of Bivalve Populations in a Mediterranean Temporary River |
| title_fullStr | Patterns of Distribution of Bivalve Populations in a Mediterranean Temporary River |
| title_full_unstemmed | Patterns of Distribution of Bivalve Populations in a Mediterranean Temporary River |
| title_short | Patterns of Distribution of Bivalve Populations in a Mediterranean Temporary River |
| title_sort | patterns of distribution of bivalve populations in a mediterranean temporary river |
| topic | <i>Unio delphinus</i> <i>Corbicula fluminea</i> intermittent river dry season Guadiana basin Mediterranean |
| url | https://www.mdpi.com/1424-2818/12/4/158 |
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