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| Firth, Louise B; Harris, Daniel; Blaze, Julie A; Marzloff, Martin; Boye, Aurelien; Miller, Peter I; Curd, Amelia; Vasquez, Mickael; Dunn, Julia D; O'Connor, Nessa E; Power, Anne-marie; Mieszkowska, Nova; O’riordan, Ruth M; Burrows, Michael T; Bricheno, Lucy M; Knights, Anthony M; Nunes, Flavia; Bordeyne, François; Bush, Laura E; Byers, James E; David, Carmen; Davies, Andrew J; Dubois, Stanislas; Edwards, Hugh; Foggo, Andy; Grant, Lisa; Mattias Green, Ja; Gribben, Paul E; Lima, Fernado P; Mcgrath, David; Noel, Laure Mlj; Seabra, Rui; Simkanin, Christina; Hawkins, Stephen J. |
| Aim To investigate some of the environmental variables underpinning the past and present distribution of an ecosystem engineer near its poleward range edge. Location >500 locations spanning >7,400 km around Ireland. Methods We collated past and present distribution records on a known climate change indicator, the reef‐forming worm Sabellaria alveolata (Linnaeus, 1767) in a biogeographic boundary region over 182 years (1836–2018). This included repeat sampling of 60 locations in the cooler 1950s and again in the warmer 2000s and 2010s. Using species distribution modelling, we identified some of the environmental drivers that likely underpin S. alveolata distribution towards the leading edge of its biogeographical range in Ireland. Results Through... |
| Tipo: Text |
Palavras-chave: Biogenic habitat; Biogeography; Cold event; Irish Sea; Macroecology; Tidal front. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00677/78938/81316.pdf |
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| Cadier, Mathilde; Sourisseau, Marc; Gorgues, Thomas; Edwards, Christopher A.; Memery, Laurent. |
| Tidal front ecosystems are especially dynamic environments usually characterized by high phytoplankton biomass and high primary production. However, the description of functional microbial diversity occurring in these regions remains only partially documented. In this article, we use a numerical model, simulating a large number of phytoplankton phenotypes to explore the three-dimensional spatial patterns of phytoplankton abundance and diversity in the Iroise Sea (western Brittany). Our results suggest that, in boreal summer, a seasonally marked tidal front shapes the phytoplankton species richness. A diversity maximum is found in the surface mixed layer located slightly west of the tidal front (i.e., not strictly co-localized with high biomass... |
| Tipo: Text |
Palavras-chave: Plankton functional traits; Biodiversity; Biogeography; Local adaptation; Dynamical transport; Tidal front. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00367/47861/48101.pdf |
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| Chevane, C. M.; Penven, Pierrick; Nehama, F. P. J.; Reason, C. J. C.. |
| The Sofala Bank, a wide shelf located along the central coast of Mozambique, hosts tides with high amplitudes. The Regional Ocean Modelling System (ROMS) was used to analyse the tidal currents on the bank and to investigate their effects on the stratification and generation of tidal fronts. During spring tides, barotropic tidal currents with maximum values ranging from 40 cm s–1 to 70 cm s–1 are found on the central bank. The major axis of the tidal ellipses for M2 and S2 follow a cross-shelf direction with mainly anticlockwise rotation. Similar to observations, three distinct regimes occur: (i) a warm well-mixed region on the inner shelf where the depths are <30 m; (ii) a wellmixed colder region above the shelf edge; and (iii) a stratified region... |
| Tipo: Text |
Palavras-chave: Barotropic tidal currents; ROMS; Sea surface temperature; Shallow seas; Tidal front. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00362/47276/47852.pdf |
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