Coastal squeeze on rocky shores in northern Scotland and some possible ecological impacts

Potentiel de migration des écosystèmes côtiers meubles québécois de l’estuaire et du golfe du Saint-Laurent dans le contexte de la hausse appréhendée du niveau de la mer

“…Les modèles récents de prévision de l'augmentation du niveau marin à l'échelle mondiale montrent aussi que les côtes du Québec et de l'est du Canada font partie des régions où la hausse future du niveau marin sera parmi les plus élevées (Slangen et collab., 2012;Han et collab., 2015). À l'international, bien que quelques études sur le coincement côtier aient été réalisées sur des côtes sablonneuses (Schleupner, 2008) et sur des côtes rocheuses (Jackson et McIlvenny, 2011), la plupart ont porté sur les marais côtiers (Cooper et collab., 2001;Doody, 2004;Torio et Chmura, 2013). Au Québec, il n'existe encore aucun portrait d'ensemble de la répartition des écosystèmes côtiers de l'EGSL.…”

Coastal use accelerated the regional sea-level rise

“…coi.gov.cn). The cases in the UK have also shown that use of seawalls and embankments can exacerbate the steepening process of coasts by halting the landward movement of high tide, which has resulted in an intertidal squeeze and ultimately the changes in beach profiles would accelerate the tidal range (Taylor et al, 2004;Jackson and McIlvenny, 2011). In addition, the possible funneling effects in confined spaces in the Bohai Sea due to excessive groundwater depletion may also lead to loss of accommodation space in unhardened coastlines (Taniguchi et al, 2008).…”

Explaining Ocean Warming: Causes, scale, effects and consequences

“…Nevertheless, in light of the predicted reduction in spatial extent, through loss of natural intertidal rocky habitats as sea levels rise ("coastal squeeze", e.g. Jackson and McIlvenny (2011)), these artificial structures may provide surrogate habitats for rocky shore organisms (see Para. 3.7.5).…”

“…Here we emphasize two important points. Firstly, climate change is not just about temperature; the intertidal zone will be very strongly influenced by changes in storminess and the return-time of extreme events influencing wave action gradients and disturbance regimes (Perkol-Finkel and Airoldi, 2010;Walsh et al, 2014;Benedetti-Cecchi et al, 2015), as well as sea-level rise on a centennial scale (Jackson and McIlvenny, 2011;Church et al, 2013) (Box 3.7.5 Figures 1 and 2). Secondly, whilst temperature (including aerial temperature) is undoubtedly extremely important, it is necessary to consider, not only average temperatures (warming), but also the frequency and extent of extreme events Smale and Wernberg, 2013).…”