Population Ecology of the Biennials Cirsium Vulgare and Cynoglossum Officinale in a Coastal Sand-Dune Area

A study of geographic variation of maritime pine (Pinuspinaster Ait.) 9 years old, regarding height growth, transpiration and sap pressure daily kinetics has been performed in two sites, one in coastal sand dune and the other one in a more interior well-drained sandy moor. Successive height increments were measured from the 4th to the 9th year of growth and the year × provenance interaction was investigated. Transpiration and sap pressure were measured on 2-year-old needle fascicles. Results show discriminant variations between provenances and suggest some hypotheses about the possible ways of natural selection concerning drought resistance. The provenances North Landes (France) and Leiria (Portugal) grow best and strongly react to any variation of environmental factors as reflected by the high value of the slope of their regression lines (regression of their annual mean on the overall annual mean). Such a genotypie instability coincides with an intense physiologic activity (large flux of water correlated with a strong loss of weight by transpiration, reaching after 3 min 2% of the total dry weight of the separated needles and associated with the lowest sap pressure when the sun is around zenith). On the contrary, the Morocan provenance Tamjoute shows a large stability; its daily curves of transpiration and sap pressure reach early their maximum and minimum and therefore express a stress avoidance. Between these two extreme behaviours, the provenances Cazorla (south Spain) and Porto-Vecchio (Corsica) have intermediate values of transpiration and sap pressure, and their height growth shows a relative stability of response to environmental change.

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Structure of bee-flower system in the coastal sand dune of Abaeté, northeastern Brazil

Revista Brasileira de Entomologia ◽

10.1590/s0085-56262006000100008 ◽

2006 ◽

Vol 50 (1) ◽

pp. 53-63 ◽

Cited By ~ 10

Author(s):

Blandina F. Viana ◽

Astrid M. P. Kleinert

Keyword(s):

Sand Dune ◽

Northeastern Brazil ◽

Coastal Sand Dune ◽

Coastal Sand

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Identifying Landscape Perceptions of Visitors’ to the Taean Coast National Park Using Social Media Data - Focused on Kkotji Beach, Sinduri Coastal Sand Dune, and Manlipo Beach -

Journal of the Korean Institute of Landscape Architecture ◽

10.9715/kila.2018.46.5.010 ◽

2018 ◽

Vol 46 (5) ◽

pp. 10-21 ◽

Cited By ~ 1

Author(s):

Sung-Hee Lee ◽

Yong-Hoon Son

Keyword(s):

Social Media ◽

National Park ◽

Sand Dune ◽

Coastal Sand Dune ◽

Social Media Data ◽

Coastal Sand ◽

Media Data

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Dragonflies (Odonata) of coastal sand-dune fresh waters of South-eastren Queensland and North-eastern New South Wales

Marine and Freshwater Research ◽

10.1071/mf9820077 ◽

1982 ◽

Vol 33 (1) ◽

pp. 77 ◽

Cited By ~ 7

Author(s):

AH Arthington ◽

JAL Watson

Keyword(s):

Physicochemical Properties ◽

Sand Dune ◽

New South ◽

New South Wales ◽

Physicochemical Characteristics ◽

Coastal Sand Dune ◽

Freshwater Streams ◽

South Wales ◽

North Eastern ◽

Coastal Sand

The Odonata and physicochemical properties of freshwater streams, lakes, ponds and bogs in the sand-dune systems of Fraser, Moreton and North Stradbroke Islands and Cooloola, Queensland: and Wooli, New South Wales, are described. The odonate faunas of these dune masses show some differences from those of nearby areas, and there are close associations between some species and particular types of dune fresh water. Although no physicochemical characteristics were identified that might limit these dune dragonflies to their specific habitats, the lake-dwellers in particular may be useful indicators of environmental change.

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