February 1st to 5th 2016
Olhão, Portugal
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Winners and losers in expanding marine urban habitats: can we do it better?

Oral Presentation
Biological Invasions
Thursday, February 4, 2016 -
15:15 to 15:30

Airoldi, L. 1

1University of Bologna

Marine landscapes have been globally altered by the introduction of a variety of human-made artificial structures. Some of the most obvious and economically important negative effects on native ecosystems are already being seen in the coastal zone, and understanding the value and benefits of conserving biodiversity in these urban systems is becoming a pressing question.Amongst the less cognized impacts of urban infrastructures are the effects on connectivity in marine populations. In most instances structures are built in areas which would otherwise be sedimentary, thereby causing on one side the fragmentation and loss of native sedimentary habitats and on the other creating stepping stones or corridors for hard-bottom species. I will demonstrate that, as currently designed and managed, many artificial habitats tend to disproportionally favour non-indigenous over native hard bottom species, affecting their spread at regional scales. I will discuss the potential consequences of these changes, and options to promoting some level of habitat enhancement and environmental quality in marine urban environments
keywords: 
Marine infrastructures

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