The non-indigenous Oithona davisae in a Mediterranean transitional environment: coexistence patterns with competing species

Abstract The Venice lagoon (VL) has been recognized as a hot spot of introduction of non-indigenous species (NIS), due to several anthropogenic factors and environmental stressors that combined may facilitate NIS invasions. In the last decades an increasing number of zooplankton NIS have been observ...

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Autores principales:	Marco Pansera, Elisa Camatti, Anna Schroeder, Giacomo Zagami, Alessandro Bergamasco
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c032892987b94dbea47b47491acbbd90
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spelling	oai:doaj.org-article:c032892987b94dbea47b47491acbbd902021-12-02T15:51:16ZThe non-indigenous Oithona davisae in a Mediterranean transitional environment: coexistence patterns with competing species10.1038/s41598-021-87662-52045-2322https://doaj.org/article/c032892987b94dbea47b47491acbbd902021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87662-5https://doaj.org/toc/2045-2322Abstract The Venice lagoon (VL) has been recognized as a hot spot of introduction of non-indigenous species (NIS), due to several anthropogenic factors and environmental stressors that combined may facilitate NIS invasions. In the last decades an increasing number of zooplankton NIS have been observed in the VL. This work aims to provide a picture of the annual cycle and distribution of the recently recorded non-indigenous copepod Oithona davisae, considering the coexistence patterns with the congeneric resident Oithona nana. Therefore, zooplankton samplings were carried out monthly from August 2016 to July 2017 at five Long-Term Ecological Research LTER stations in the VL. Oithona davisae showed a persistent occurrence throughout the year with the highest abundances in the warm season and in the inner areas, while the congeneric O. nana, showing a different distribution pattern, resulted more abundant near the inlets of the Lagoon, where O. davisae reached the minimum density. Oithona davisae seems to find local conditions that promote its settlement and distribution, especially in the inner and more trophic lagoon sites. In other European coastal embayments or transitional waters, O. davisae occupied the niche left by the indigenous O. nana or can replace this congeneric species through competitive exclusion mechanisms. Our data indicate that, for now, such species replacement has not occurred in the VL. One of the causes is the extreme variety of habitats and niches offered by this environment allowing a balanced coexistence with O. nana and in general with the resident copepod community.Marco PanseraElisa CamattiAnna SchroederGiacomo ZagamiAlessandro BergamascoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marco Pansera Elisa Camatti Anna Schroeder Giacomo Zagami Alessandro Bergamasco The non-indigenous Oithona davisae in a Mediterranean transitional environment: coexistence patterns with competing species
description	Abstract The Venice lagoon (VL) has been recognized as a hot spot of introduction of non-indigenous species (NIS), due to several anthropogenic factors and environmental stressors that combined may facilitate NIS invasions. In the last decades an increasing number of zooplankton NIS have been observed in the VL. This work aims to provide a picture of the annual cycle and distribution of the recently recorded non-indigenous copepod Oithona davisae, considering the coexistence patterns with the congeneric resident Oithona nana. Therefore, zooplankton samplings were carried out monthly from August 2016 to July 2017 at five Long-Term Ecological Research LTER stations in the VL. Oithona davisae showed a persistent occurrence throughout the year with the highest abundances in the warm season and in the inner areas, while the congeneric O. nana, showing a different distribution pattern, resulted more abundant near the inlets of the Lagoon, where O. davisae reached the minimum density. Oithona davisae seems to find local conditions that promote its settlement and distribution, especially in the inner and more trophic lagoon sites. In other European coastal embayments or transitional waters, O. davisae occupied the niche left by the indigenous O. nana or can replace this congeneric species through competitive exclusion mechanisms. Our data indicate that, for now, such species replacement has not occurred in the VL. One of the causes is the extreme variety of habitats and niches offered by this environment allowing a balanced coexistence with O. nana and in general with the resident copepod community.
format	article
author	Marco Pansera Elisa Camatti Anna Schroeder Giacomo Zagami Alessandro Bergamasco
author_facet	Marco Pansera Elisa Camatti Anna Schroeder Giacomo Zagami Alessandro Bergamasco
author_sort	Marco Pansera
title	The non-indigenous Oithona davisae in a Mediterranean transitional environment: coexistence patterns with competing species
title_short	The non-indigenous Oithona davisae in a Mediterranean transitional environment: coexistence patterns with competing species
title_full	The non-indigenous Oithona davisae in a Mediterranean transitional environment: coexistence patterns with competing species
title_fullStr	The non-indigenous Oithona davisae in a Mediterranean transitional environment: coexistence patterns with competing species
title_full_unstemmed	The non-indigenous Oithona davisae in a Mediterranean transitional environment: coexistence patterns with competing species
title_sort	non-indigenous oithona davisae in a mediterranean transitional environment: coexistence patterns with competing species
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c032892987b94dbea47b47491acbbd90
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The non-indigenous Oithona davisae in a Mediterranean transitional environment: coexistence patterns with competing species

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