scholarly journals Estructura, composición y diversidad del matorral de duna costera en el litoral yucateco

2019 ◽  
Vol 86 ◽  
pp. 37
Author(s):  
Wendy Torres ◽  
Martha Méndez ◽  
Alfredo Dorantes ◽  
Rafael Durán
Keyword(s):  
Vascular Plants ◽  
Sand Dune ◽  
Anthropogenic Activities ◽  
Alpha Diversity ◽  
Coastal Dune ◽  
Coastal Sand Dune ◽  
Coastal Sand ◽  
Shrub Dominance ◽  
Future Management

In order to provide elements to make decisions in future management programs, the scrub vegetation of coastal sand dune was characterized in Yucatan, Mexico. This ecosystem has been deteriorated and fragmented due to anthropogenic activities. We recorded the height, coverage and taxonomic identity of individuals ≥ 50 cm in height, in ten locations. A total of 71 species of vascular plants in 36 families were recorded. Two types of communities, one with a shrub dominance and individuals lees than 3 m and other one with larger individuals ≥ 3 m. Values of alpha diversity (26.6), gamma (71) and beta (2.66) were determined. Classification and ordenation analyzes distinguished three groups of vegetation: G1) in the western part of the coast was characterized by species such as <em>Pithecellobium keyense/<em> and <em>Sideroxylon americanum</em>, G2) in the central part by <em>Coccothrinax readii, Bravaisia berlandieriana</em> and <em>Metopium brownei</em>, G3) in the east, was characterized by <em>Coccothrinax readii, Thrinax radiata</em> and <em>Pseudophoenix sargentii</em>. This study provides ecological elements to take decisions on future programs of restoration and management of the coastal dune in Yucatan, Mexico.</em></em>

The Flora of Vascular Plants on Hasidong Coastal Sand Dune

2010 ◽  
Vol 8 (4) ◽  
pp. 231-246
Author(s):  
Moon-Pyo HONG ◽  
Bo-Ram HONG ◽  
Young-Moon CHUN
Keyword(s):  
Vascular Plants ◽  
Sand Dune ◽  
Coastal Sand Dune ◽  
Coastal Sand

Nước dưới đất trong cồn cát ven biển phía nam Quảng Bình và định hướng khai thác sử dụng

2018 ◽  
Vol 28 (3) ◽  
pp. 336-345
Author(s):  
Nguyễn Xuân Tặng
Keyword(s):  
Sand Dune ◽  
Coastal Sand Dune ◽  
The South ◽  
Coastal Sand ◽  
Dune Area

Groundwater in coastal sand dune area in the south of Quang Binh province and posibility for exploitation

Vegetation of a coastal sand dune system in southern New Zealand

1991 ◽  
Vol 2 (4) ◽  
pp. 531-538 ◽  
Author(s):  
Martin T. Sykes ◽  
J. Bastow Wilson
Keyword(s):  
New Zealand ◽  
Sand Dune ◽  
Coastal Sand Dune ◽  
Dune System ◽  
Coastal Sand

Stabilité phénotypique de la croissance en hauteur et cinétique journalière de la pression de sève et de la transpiration chez le pin maritime (Pinuspinaster Ait.)

1982 ◽  
Vol 12 (4) ◽  
pp. 936-946 ◽  
Author(s):  
J. P. Guyon ◽  
A. Kremer
Keyword(s):  
Sand Dune ◽  
Dry Weight ◽  
Height Growth ◽  
Coastal Sand Dune ◽  
Loss Of Weight ◽  
Coastal Sand ◽  
Total Dry Weight ◽  
Physiologic Activity ◽  
Response To Environmental Change ◽  
Pin Maritime

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.

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

1982 ◽  
Vol 33 (1) ◽  
pp. 77 ◽  
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.

Ecological drivers of plant diversity patterns in remnants coastal sand dune ecosystems along the northern Adriatic coastline

2018 ◽  
Vol 33 (6) ◽  
pp. 1157-1168 ◽  
Author(s):  
Enrico Tordoni ◽  
Rossella Napolitano ◽  
Simona Maccherini ◽  
Daniele Da Re ◽  
Giovanni Bacaro
Keyword(s):  
Plant Diversity ◽  
Sand Dune ◽  
Coastal Sand Dune ◽  
Northern Adriatic ◽  
Diversity Patterns ◽  
Coastal Sand

Hymenobacter Taeanensis Sp. Nov., Radiation Resistant Bacterium Isolated from Coastal Sand Dune

2021 ◽  
Author(s):  
Ji Hee Lee ◽  
Jong-Hyun Jung ◽  
Min-Kyu Kim ◽  
Han Na Choe ◽  
Sangyong Lim
Keyword(s):  
Gamma Radiation ◽  
Sand Dune ◽  
Rrna Gene ◽  
Sand Sample ◽  
Coastal Sand Dune ◽  
Respiratory Quinone ◽  
Protein Coding ◽  
Radiation Resistant ◽  
Coastal Sand ◽  
The 16S Rrna Gene

Abstract An aerobic, Gram-stain-negative, non-motile, non-spore-forming, rod-shaped, and light pink-colored bacterial strain, designated TS19T, was isolated from a sand sample obtained from a coastal sand dune after exposure to 3 kGy of gamma radiation. Phylogenetic analysis based on the 16S rRNA gene sequences revealed that the isolate was a member of the genus Hymenobacter and was most closely related to H. wooponensis WM78T (98.3% similarity). Strain TS19T and H. wooponensis showed resistance to gamma radiation with D10 values (i.e., the dose required to reduce the bacterial population by tenfold) of 7.3 kGy and 3.5 kGy, respectively. The genome of strain TS19T consists of one contig with 4,879,662 bp and has a G+C content of 56.2%. The genome contains 3,955 protein coding sequences, 44 tRNAs, and 12 rRNAs. The predominant fatty acids of strain TS19T were iso-C15:0, summed feature 4 (iso-C17:1 I and/or anteiso-C17:1 B), summed feature 3 (C16:1 ω6c and/or C16:1 ω7c), and C16:1 ω5c. The major polar lipids were phosphatidylethanolamine, and one unknown aminophospholipid. The main respiratory quinone was menaquinone-7. Based on the phylogenetic, physiological, and chemotaxonomic characteristics, strain TS19T represents a novel species, for which the name Hymenobacter taeanensis sp. nov. is proposed. The type strain is TS19T (=KCTC 72897T =JCM 34023T).

Spatial Distribution of Halophytes in the Goraebul Coastal Sand Dune, Korea

2017 ◽  
Vol 35 (3) ◽  
pp. 380-388 ◽  
Author(s):  
Min-Hyeong Jeong ◽  
Seok Cheol Kim ◽  
Bo Ram Hong ◽  
Kyu Song Lee
Keyword(s):  
Spatial Distribution ◽  
Sand Dune ◽  
Coastal Sand Dune ◽  
Coastal Sand
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