The internal structure of vegetated coastal sand dunes, Sable Island, Nova Scotia

Rosa rugosa is described for the first time as an invasive species associated with coastal sand dunes in Atlantic Canada. Our surveys of 24 beaches on western Cape Breton Island and the mainland of northern Nova Scotia from Cheticamp to Fox Harbour showed that 11 of the dune systems (ca. 45%) were colonized. This was more prevalent in Cape Breton where R. rugosa occurred on 9 of 13 systems, whereas only 2 of 9 mainland systems were colonized. Four dunes (three in Cape Breton) were considered heavily colonized with 0.4 - 8.8% of the dune area with cover of R. rugosa. These beaches had 12 - 42 independent clumps with almost monospecific stands over 90% cover. In general, heavily colonized beaches were found adjacent to communities where extensive domestic planting and hedges of R. rugosa occurred and where escapes onto roadsides had occurred. In most colonized beach systems, rhizomes from clones extended 1 - 5 m to produce younger shoots. The absence of Ammophila breviligulata, Lathyrus maritimus and Myrica pensylvanica, from the interior of many clumps of R. rugosa suggests that native dune communities are being negatively impacted. This exacerbates dune integrity already compromised by impacts of sea level rise.

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Insects Fauna from the Coastal Sand-dunes of Korea

Korean Journal of Nature Conservation ◽

10.30960/kjnc.2003.1.1.27 ◽

2003 ◽

Vol 1 (1) ◽

pp. 27-45 ◽

Cited By ~ 4

Author(s):

Jin III KIM

Keyword(s):

Sand Dunes ◽

Coastal Sand Dunes ◽

Coastal Sand

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Elaeagnus umbellata (autumn olive).

10.1079/fc.20728.20210115041 ◽

2021 ◽

Author(s):

Julissa Rojas-Sandoval ◽

Nick Pasiecznik

Keyword(s):

Sand Dunes ◽

Pinus Thunbergii ◽

Shaanxi Province ◽

Annual Rainfall ◽

Coastal Sand Dunes ◽

Elaeagnus Umbellata ◽

Autumn Olive ◽

Pioneer Tree ◽

Coastal Sand ◽

Deciduous Shrub

Abstract E. umbellata is an important deciduous shrub which reaches up to 5 m high and 10 cm in d.b.h. It is found in thickets and sparse woods of Japan, Korea and China. E. umbellata is a shade intolerant pioneer tree and is also commonly found along riversides and seashores in Japan. This species is growing in humid areas with 1000-4000 mm of annual rainfall in Japan. In China it is reported to grow even in semi-arid areas of Nei Menggu, Gansu and Shaanxi province, where annual rainfall is around 400 mm (Niu, 1990). E. umbellata can fix nitrogen and it is tolerant to salt winds, this species is therefore used for fixation of coastal sand dunes in Japan, and is frequently planted mixed with Pinus thunbergii as a soil improving tree. E. umbellata is also planted in eroded areas of mountainous zones to re-establish and develop vegetation. In China, E. umbellata is occasionally cultivated in gardens (Zhang, 1997).

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Pans in humus podzols (Humods and Aquods) in coastal southern Queensland

Soil Research ◽

10.1071/sr9960161 ◽

1996 ◽

Vol 34 (1) ◽

pp. 161 ◽

Cited By ~ 13

Author(s):

CH Thompson ◽

EM Bridges ◽

DA Jenkins

Keyword(s):

Soil Depth ◽

Sand Dunes ◽

Coastal Dunes ◽

Particle Packing ◽

Sand Mining ◽

Coastal Sand Dunes ◽

Organic Complex ◽

Coastal Sand ◽

Coastal Lowlands

An exploratory examination has been made of three different kinds of hardpans found in humus podzols (Humods and Aquods) of the coastal lowlands of southern Queensland, by means of slaking tests, a reactive aluminium test, acid oxalate and pyrophosphate extractions and electron microscopy. Samples from three indurated layers exposed by erosion or sand-mining in large coastal dunes were included for comparison. The investigation confirmed that, a pan in a bleached A2 (albic E) horizon is most likely caused by particle packing and that a pan in a black B2h (spodic) horizon is cemented by an aluminium-organic complex. Yellow-brown pans underlying black organic pans (spodic horizons) were found to be cemented by both a proto-imogolite/allophane complex and an organic substance. An inorganic reactive Al complex differing from the proto-imogolite allophane recorded in the overlying giant podzols appeared to be main cement of three indurated layers in the nearby coastal sand dunes. Mechanical disturbance of the pans, e.g. ripping, is unlikely to improve drainage and effective soil depth in the long term, because the disturbed zones are expected to be re-sealed by packed particles or by the aluminium-organic complex cement.

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