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Title: Patterns of Distribution of Bivalve Populations in a Mediterranean Temporary River
Authors: Gama, Mafalda 
Banha, Filipe
Moreira, Cristina 
Gama, Henrique
Graça, Manuel 
Anastácio, Pedro
Keywords: Unio delphinus; Corbicula fluminea; intermittent river; dry season; Guadiana basin; Mediterranean
Issue Date: 2020
Publisher: MDPI
Project: SOMINCOR—Sociedade Mineira de Neves Corvo, project MUSSELFLOW (PTDC/BIA-EVL/29199/2017) 
MARE (UID/MAR/04292/2019) 
Serial title, monograph or event: Diversity
Volume: 12
Issue: 4
Abstract: In the south of the Iberian Peninsula, many rivers are intermittent, a state most likely to be exacerbated by climate change, strongly a ecting 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 (Unio delphinus) and invasive (Corbicula fluminea) bivalves di ered 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. U. delphinus occurred in all pools, while C. fluminea occurred only in the two most downstream pools. U. delphinus, but not C. fluminea, was found preferentially in patches under riparian vegetation cover. Both species were found in similar sediment types (coarse and fine gravel respectively). Although U. delphinus 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 U. delphinus some advantage against C. fluminea.
ISSN: 1424-2818
DOI: 10.3390/d12040158
Rights: openAccess
Appears in Collections:I&D MARE - Artigos em Revistas Internacionais

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