Linking plant communities on land and at sea: The effects of Posidonia oceanica wrack on the structure of dune vegetation

2017 ◽  
Vol 184 ◽  
pp. 30-36 ◽  
Author(s):  
Silvia Del Vecchio ◽  
Tommaso Jucker ◽  
Marta Carboni ◽  
Alicia T.R. Acosta
Keyword(s):  
Plant Communities ◽  
Posidonia Oceanica ◽  
Dune Vegetation

scholarly journals Assessment of the Restoration of the Remolar Dune System (Viladecans, Barcelona): The Resilience of a Coastal Dune System

2021 ◽  
Vol 9 (2) ◽  
pp. 113
Author(s):  
Antoni Calafat ◽  
Sara Vírseda ◽  
Raúl Lovera ◽  
Joan Ramon Lucena ◽  
Carme Bladé ◽  
...  
Keyword(s):  
Grain Size ◽  
Plant Communities ◽  
Ground Penetrating Radar ◽  
Coastal Dune ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Dune Vegetation ◽  
Dune System ◽  
Coastal Dune System ◽  
Ground Penetrating

The Remolar beach-dune system (700 m long and more than 100 m wide, 070N direction) borders a campground that was closed (2003), due to the Barcelona airport expansion. In order to recover and restore the dune ecosystem, a series of soft measures were performed. After 10 years, a study of the morphology, sedimentology, and vegetation of the ecosystem was carried out to evaluate the results of these measures. For this purpose, a series of topographic and ground-penetrating radar (GPR) profiles, grain-size analysis, and an analysis of plant communities found along the profiles were carried out. The data obtained were compared with data from a former 2004 study. The results show that the morphology of the dunes recovered, and a new primary dune has arisen. The system now has a greater process of aggradation than of progradation. The vegetation has recovered the global composition of dune systems, with a typical community of embryo dunes and others of primary dunes that are set in strips parallel to the coast. Despite this improvement, the opportunistic and ruderal component in the primary dune vegetation evidences a strong anthropic inheritance in the system.

Plant communities of the British sand dunes

1989 ◽  
Vol 96 ◽  
pp. 53-74
Author(s):  
A. J. C. Malloch
Keyword(s):  
Plant Communities ◽  
Sand Dune ◽  
Sand Dunes ◽  
Geographic Location ◽  
Dune Vegetation ◽  
Dune System ◽  
Ecological Relationships ◽  
Major Direction ◽  
Pattern Of Variation ◽  
Calcium Status

SynopsisThe National Vegetation Classification has details of some 2000 samples of sand dune vegetation collected nationally. Analysis of these data has resulted in the recognition of about thirteen plant communities of the sand dune system. Details of these communities are presented, elaborating on their species composition, variability, ecological relationships and distribution. As might be expected, the major direction of variation is from strandline, through the vegetation of active dunes, to the fixed dune grasslands, heath and scrub. The precise pattern is affected by the calcium status of the dune and by its geographic location. The vegetation of dune slacks is also dependent on the calcium status of the sand, as well as the amount and persistence of standing water. Superimposed on this natural pattern of variation is the use of dune systems by the grazing of domestic animals as seen on the machair of the Hebrides in particular.

scholarly journals Dune vegetation and coastal thicket plant communities in threatened limestone fynbos of Andrew’s Field and Tsaba-Tsaba Nature Reserve, Struisbaai, Western Cape

Koedoe ◽  
2006 ◽  
Vol 49 (1) ◽  
Author(s):  
M.M. Zietsman ◽  
G.J. Bredenkamp
Keyword(s):  
Plant Communities ◽  
Nature Reserve ◽  
Floristic Composition ◽  
Soil Surface ◽  
Western Cape ◽  
Ammophila Arenaria ◽  
Dune Vegetation ◽  
Grassland Community ◽  
Shrub Community ◽  
Dune Grassland

The coastal thicket and dune vegetation of Andrew’s Field and Tsaba-Tsaba Nature Reserve was classified using Braun-Blanquet procedures and TWINSPAN. The vegetation was sampled using 74 randomly stratified sample plots. The floristic composition, cover- abundance of each species, and several environmental variables were recorded in each sample plot. Six plant communities were identified, namely, Rhus glauca - Euclea racemosa low to tall closed thicket community; Chrysanthemoides monilifera - Solanum africanum low closed dune shrub community; Chrysanthemoides monilifera - Ehrharta villosa var. maxima low to high closed dune shrub community; Ehrharta villosa var. maxima low to short closed dune grassland community; Ammophila arenaria low to short closed dune grassland community; and Arcthotheca populifolia - Thinopyrum distichum low to short open beach community. These were subdivided into eight subcommunities and four variants. All communities, sub-communities and variants were described and ecologically interpreted. The distribution of the communities, sub-communities and variants can mainly be ascribed to differences in landform, rockiness of the soil surface the degree of protection / exposure of the vegetation to the dominating winds of the area.

Weed plant communities of orchards in Siwa Oasis, Egypt

1994 ◽  
Vol 105 (5-6) ◽  
pp. 387-398
Author(s):  
M. M. Abd El-Ghani
Keyword(s):  
Plant Communities ◽  
Weed Plant

Temporal dynamics of mycorrhizal fungal communities and co-associations with grassland plant communities following experimental manipulation of rainfall

2019 ◽  
Author(s):  
Coline Deveautour ◽  
Sally Power ◽  
Kirk Barnett ◽  
Raul Ochoa-Hueso ◽  
Suzanne Donn ◽  
...  
Keyword(s):  
Community Composition ◽  
Plant Community ◽  
Plant Communities ◽  
Fungal Community ◽  
Mycorrhizal Fungi ◽  
Temporal Dynamics ◽  
Arbuscular Mycorrhizal ◽  
Fungal Communities ◽  
Plant Responses ◽  
Rainfall Regimes

Climate models project overall a reduction in rainfall amounts and shifts in the timing of rainfall events in mid-latitudes and sub-tropical dry regions, which threatens the productivity and diversity of grasslands. Arbuscular mycorrhizal fungi may help plants to cope with expected changes but may also be impacted by changing rainfall, either via the direct effects of low soil moisture on survival and function or indirectly via changes in the plant community. In an Australian mesic grassland (former pasture) system, we characterised plant and arbuscular mycorrhizal (AM) fungal communities every six months for nearly four years to two altered rainfall regimes: i) ambient, ii) rainfall reduced by 50% relative to ambient over the entire year and iii) total summer rainfall exclusion. Using Illumina sequencing, we assessed the response of AM fungal communities sampled from contrasting rainfall treatments and evaluated whether variation in AM fungal communities was associated with variation in plant community richness and composition. We found that rainfall reduction influenced the fungal communities, with the nature of the response depending on the type of manipulation, but that consistent results were only observed after more than two years of rainfall manipulation. We observed significant co-associations between plant and AM fungal communities on multiple dates. Predictive co-correspondence analyses indicated more support for the hypothesis that fungal community composition influenced plant community composition than vice versa. However, we found no evidence that altered rainfall regimes were leading to distinct co-associations between plants and AM fungi. Overall, our results provide evidence that grassland plant communities are intricately tied to variation in AM fungal communities. However, in this system, plant responses to climate change may not be directly related to impacts of altered rainfall regimes on AM fungal communities. Our study shows that AM fungal communities respond to changes in rainfall but that this effect was not immediate. The AM fungal community may influence the composition of the plant community. However, our results suggest that plant responses to altered rainfall regimes at our site may not be resulting via changes in the AM fungal communities.

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