Regional Environmental Gradients Influence Ecophysiological Responses of Dominant Coastal Dune Plants to Changes in Local Conditions

Fidalgo, Fernanda; Santos, Álvaro da Silva; Pimenta, Sofia; Marques, Joana; Honrado, João P.

doi:10.2112/jcoastres-d-11-00161.1

Cited by 3 publications

(2 citation statements)

References 64 publications

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“…Markers of plant stress could represent early signals of change before strong ecological impacts take place and could integrate the information acquired through the classical approaches, i.e. floristic and geological investigations (Fidalgo et al, 2014). Physiological responses of plants to the environment may involve photosynthesis, redox status and water balance and can be accurately measured, thus making them good candidates as early indices of environmental changes (Galmés, 2009;Al Hassan et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Seasonal and microclimatic influences on the ecophysiology of Mediterranean coastal dune plants

Sorce

Bottega

Spanò

2019

Estuarine, Coastal and Shelf Science

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Coastal dune environment, due to the complex coast-to-inland gradient, contributes greatly to plant biodiversity. The ability of plants to withstand the harsh conditions of this habitat leads to a peculiar vegetation profile which may be affected by the natural and artificial degradation of the coast. Given that these disturbances are bound to increase in the future, there is a great interest in the deepening of knowledge of resistance mechanisms allowing plants to colonize this stressful environment. Our focus was on physiological stress markers that could be early signals of changes before ecological disturbances become evident. Three representative species of the different dune zones, Achillea maritima, Ammophila arenaria and Helichrysum stoechas were studied during the four seasons. Winter and summer were confirmed as the most critical seasons with different levels of stress depending on the coast profile where plants grew. The shoreline-inland gradient of stress conditions was evident only for A. arenaria, whose physiology was negatively affected in foredune during summer and for this reason this species could be a useful indicator of increasingly harsh environmental conditions. Physiological performances of the studied species changed across the seasons and the occupied niches, in accordance with the respective strategies of resistance.

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Section: Introductionmentioning

confidence: 99%

Seasonal and microclimatic influences on the ecophysiology of Mediterranean coastal dune plants

Sorce

Bottega

Spanò

2019

Estuarine, Coastal and Shelf Science

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“…Coastal dune habitats around the world are highly dynamic biogeographic and ecological systems maintaining substantial biological diversity (Provoost et al, 2011;Keijsers et al, 2015;CiCCarelli & BaCaro, 2016). Sand accretion in coastal habitats, including beaches and dunes, is among environmental factors having a significant effect on plant species distribution as well as growth and reproduction of individual coastal plants (Maun & PeruMal, 1999;GilBert et al, 2008;FidalGo et al, 2014). Native sand dune species possess a high tolerance to burial by sand, being able to complete generative reproduction even after almost complete burial (ievinsh, 2006).…”

Section: Introductionmentioning

confidence: 99%

Variation in Growth Response of Coastal Dune-Building Grass Species Ammophila Arenaria and Leymus Arenarius to Sand Burial

Ievinsh

Andersone-Ozola

2020

Botanica

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Ammophila arenaria and Leymus arenarius are dune-building grass species native to European seacoasts. The present study aimed to compare growth responses to the sand burial of A. arenaria and L. arenarius from coastal habitats of the Baltic Sea, when the intensity of sand accretion was relatively low under controlled conditions. Plants were grown from seeds collected from natural coastal habitats, transplanted into individual containers, buried in the sand at different depths in the rapid shoot elongation stage, and further cultivated (11 or 9 weeks) in an automated greenhouse. Burial in sand significantly stimulated the growth of shoots of A. arenaria, the effect was earlier at high burial intensities (46 and 60%) and was evident ten days after the start of treatment. Both shoot and root dry mass increased for plants buried at 13%; however, increased burial depth (37, 46 and 60%) resulted in a significant increase in root biomass. In comparison, shoot biomass decreased significantly at the highest burial intensity (60%). For L. arenarius, there was no direct dependence of shoot elongation rate on burial depth. There was a tendency for increased elongation growth and biomass allocation to leaf sheaths despite a decrease in total shoot mass. Most strikingly, root biomass decreased with sand burial in parallel with increased burial depth up to 21% intensity. In conclusion, although both grass species showed a positive shoot growth response to moderate sand burial intensity, differences in individual responses at the morphological and physiological level indicate the existence of different genetically based adaptation strategies.

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Different responses but complementary views: patterns of cross-taxa diversity under contrasting coastal dynamics in secondary sand dunes

Vaz

Hespanhol

Vieira

et al. 2019

Plant Biosystems - An International Journal Dealing with all As

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Regional Environmental Gradients Influence Ecophysiological Responses of Dominant Coastal Dune Plants to Changes in Local Conditions

Cited by 3 publications

References 64 publications

Seasonal and microclimatic influences on the ecophysiology of Mediterranean coastal dune plants

Seasonal and microclimatic influences on the ecophysiology of Mediterranean coastal dune plants

Variation in Growth Response of Coastal Dune-Building Grass Species Ammophila Arenaria and Leymus Arenarius to Sand Burial

Different responses but complementary views: patterns of cross-taxa diversity under contrasting coastal dynamics in secondary sand dunes

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