Winners and losers: prevalence of non-indigenous species under different simulated marine heatwaves and high propagule pressure in an oceanic island

2021 ◽  
Author(s):  
N Castro ◽  
P Ramalhosa ◽  
E Cacabelos ◽  
JL Costa ◽  
J Canning-Clode ◽  
...  
Keyword(s):  
Propagule Pressure ◽  
Oceanic Island ◽  
Indigenous Species ◽  
Non Indigenous Species

scholarly journals Variability in the settlement of non-indigenous species in benthic communities from an oceanic island

2018 ◽  
Vol 72 (1) ◽  
Author(s):  
Léa Riera ◽  
Patrício Ramalhosa ◽  
João Canning-Clode ◽  
Ignacio Gestoso
Keyword(s):  
Benthic Communities ◽  
Oceanic Island ◽  
Indigenous Species ◽  
Non Indigenous Species

scholarly journals The Role of Biofilms Developed under Different Anthropogenic Pressure on Recruitment of Macro-Invertebrates

2020 ◽  
Vol 21 (6) ◽  
pp. 2030
Author(s):  
Eva Cacabelos ◽  
Patrício Ramalhosa ◽  
João Canning-Clode ◽  
Jesús S. Troncoso ◽  
Celia Olabarria ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Propagule Pressure ◽  
Anthropogenic Pressure ◽  
Indigenous Species ◽  
Control Mechanisms ◽  
Microbial Biofilms ◽  
Composition Structure ◽  
Non Indigenous Species ◽  
And Control

Microbial biofilms can be key mediators for settlement of macrofoulers. The present study examines the coupled effects of microbial biofilms and local environmental conditions on the composition, structure and functioning of macrofouling assemblages. Settlement of invertebrates over a gradient of human-impacted sites was investigated on local biofilms and on biofilms developed in marine protected areas (MPAs). Special attention was given to the presence of non-indigenous species (NIS), a global problem that can cause important impacts on local assemblages. In general, the formation of macrofouling assemblages was influenced by the identity of the biofilm. However, these relationships varied across levels of anthropogenic pressure, possibly influenced by environmental conditions and the propagule pressure locally available. While the NIS Watersipora subatra seemed to be inhibited by the biofilm developed in the MPA, Diplosoma cf. listerianum seemed to be attracted by biofilm developed in the MPA only under mid anthropogenic pressure. The obtained information is critical for marine environmental management, urgently needed for the establishment of prevention and control mechanisms to minimize the settlement of NIS and mitigate their threats.

scholarly journals Widespread demographic explosion of a non-indigenous hydrozoan on an oceanic island

2020 ◽  
Vol 84 (2) ◽  
Author(s):  
Fernando Espino ◽  
Francisco J. Otero-Ferrer ◽  
Néstor E. Bosch ◽  
Josep Coca ◽  
Ricardo Haroun ◽  
...  
Keyword(s):  
Size Structure ◽  
Oceanic Island ◽  
Indigenous Species ◽  
Temporal And Spatial Variation ◽  
Seagrass Meadows ◽  
Rocky Reefs ◽  
Different Types ◽  
Temporal And Spatial ◽  
Non Indigenous Species ◽  
Structure Patterns

The arrival of non-indigenous species into new areas is one of the main processes altering the oceans globally. Macrorhynchia philippina is a large-sized colonial hydrozoan of an invasive nature. To obtain a deeper understanding of the process of colonization of new areas, it is essential to describe the ecological pattern through scales of temporal and spatial variation. In this study, we describe the colonization by M. Philippina of an oceanic island (Gran Canaria Island, Canary Islands, eastern Atlantic). We describe the abundance and size structure patterns of M. Philippina in three nearshore habitats, rocky reefs, seagrass meadows and rhodolith seabeds, at times before (2014), during (2016) and after (2017) the demographic explosion of this species. On rocky reefs and rhodolith seabeds, the abundance of colonies increased dramatically in 2017 rel­ative to 2014, e.g. from 0 to 138 colonies/100 m2. On seagrass meadows, however, the colonies were smaller. In summary, M. Philippina shows an ecological plasticity to rapidly colonize different types of nearshore habitats, but with varying success.

Meta-analysis on the ecological impacts of widely spread non-indigenous species in the Baltic Sea

2021 ◽  
pp. 147375
Author(s):  
Henn Ojaveer ◽  
Jonne Kotta ◽  
Okko Outinen ◽  
Heli Einberg ◽  
Anastasija Zaiko ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Meta Analysis ◽  
Ecological Impacts ◽  
Indigenous Species ◽  
The Baltic Sea ◽  
The Baltic ◽  
Non Indigenous Species

scholarly journals First Record of the Alien Species Procambarus virginalis Lyko, 2017 in Fresh Waters of Sardinia and Insight into Its Genetic Variability

Life ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 606
Author(s):  
Daria Sanna ◽  
Ilenia Azzena ◽  
Fabio Scarpa ◽  
Piero Cossu ◽  
Angela Pira ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Alien Species ◽  
Procambarus Clarkii ◽  
Mitochondrial Gene ◽  
First Record ◽  
Indigenous Species ◽  
Fresh Waters ◽  
Mediterranean Island ◽  
Marbled Crayfish ◽  
Non Indigenous Species

In the fresh waters of Sardinia (Italy), the non-indigenous crayfish species Procambarus clarkii has been reported from 2005, but, starting from 2019, there have been several reports of a new non-indigenous crayfish in southern and central areas of this Mediterranean island, and its morphology suggests that this species may be the marbled crayfish Procambarus virginalis. Forty-seven individuals of this putative species were analyzed, using the mitochondrial gene Cytochrome c Oxidase subunit I as molecular marker to identify this crayfish and investigate the level of genetic variability within the recently established population. Phylogenetic and phylogeographic analyses were carried out on a dataset including sequences from the Sardinian individuals and from all congenerics available in GenBank. Results showed that the new Sardinian crayfish belong to the species P. virginalis. All the sequences belonging to P. virginalis from European countries are identical, with only few exceptions found among Sardinian individuals. In conclusion, this paper highlights the occurrence of a new further alien species in the Sardinian fresh waters, which are already characterized by the high presence of non-indigenous species.

scholarly journals Economic and Environmental Impacts of Harmful Non-Indigenous Species in Southeast Asia

PLoS ONE ◽  
2013 ◽  
Vol 8 (8) ◽  
pp. e71255 ◽  
Author(s):  
Le T. P. Nghiem ◽  
Tarek Soliman ◽  
Darren C. J. Yeo ◽  
Hugh T. W. Tan ◽  
Theodore A. Evans ◽  
...  
Keyword(s):  
Southeast Asia ◽  
Environmental Impacts ◽  
Indigenous Species ◽  
Non Indigenous Species

scholarly journals Non indigenous species settle down in the Taranto Seas

2004 ◽  
Vol 25 ◽  
Author(s):  
Francesco Mastrototaro ◽  
Antonella Petrocelli ◽  
Ester Cecere ◽  
Alfonso Matarrese
Keyword(s):  
Indigenous Species ◽  
Non Indigenous Species
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