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1. Environmental Dynamics in Salinas Grandes, Catamarca, Argentina

Author:
Karlin, Marcos S.; Bachmeier, Omar A.; Dalmasso, Antonio; Sayago, José M.; Sereno, Roberto
Source:
Arid land research and management 2011 v.25 no.4 pp. 328-350
ISSN:
1532-4990
Subject:
biodiversity; biomass; climate; deforestation; dunes; ecosystems; electrical conductivity; exergy; overgrazing; plant communities; primary succession; rangelands; salinity; salts; secondary succession; soil salinity; soil surveys; topsoil; Argentina
Abstract:
... Saline systems are open systems where energy and matter fluxes produce modifications in the ecosystem, especially in plant communities, defined by species abundance and plant cover. Based on these changes, it is possible to define vectors that show the tendencies of such communities to reach mature or stationary states and their modifications by natural or anthropic disturbances. Salinity and tops ...
DOI:
10.1080/15324982.2011.602176

2. A phytosociological and phytogeographical survey of the coastal vegetation of western North America: beach and dune vegetation from Baja California to Alaska

Author:
Peinado, Manuel; Ocaña-Peinado, Francisco Manuel; Aguirre, Juan Luis; Delgadillo, José; Macías, Miguel Ángel; Díaz-Santiago, Gustavo
Source:
Applied vegetation science 2011 v.14 no.4 pp. 464-484
ISSN:
1654-109X
Subject:
vegetation types; chemical elements; dunes; plant communities; botanical composition; surveys; beaches; edaphic factors; phytogeography; coasts; indigenous species; shorelines; phytosociology; climate; Alaska; Mexico
Abstract:
... Questions: What is the floristic composition of the plant communities that inhabit the beaches and dunes of the Pacific coast of North America? What are their ecological relationships in the zonal and successional gradients typical of coastal dune systems? Does climate affect the latitudinal distribution of the azonal vegetation? What other environmental factors influence their distribution on the ...
DOI:
10.1111/j.1654-109X.2011.01134.x

3. Reconstruction of Holocene coastal foredune progradation using luminescence dating — An example from the Świna barrier (southern Baltic Sea, NW Poland)

Author:
Reimann, Tony; Tsukamoto, Sumiko; Harff, Jan; Osadczuk, Krystyna; Frechen, Manfred
Source:
Geomorphology 2011 v.132 no.1-2 pp. 1-16
ISSN:
0169-555X
Subject:
Littorina; climate; coasts; dunes; forests; luminescence; quartz; sea level; sediments; vegetation cover; Baltic Sea; Central European region; Poland
Abstract:
... Two sandy spits on the Świna barrier (Wolin and Uznam) provide a very detailed succession of Holocene coastal foredunes and dunes and are regarded as key sites along the southern Baltic Sea coast. Optically Stimulated Luminescence (OSL) dating is proven to be a powerful tool for the reconstruction of Holocene coastal spit evolution and foredune accretion; quartz extracted from the coastal sediment ...
DOI:
10.1016/j.geomorph.2011.04.017

4. Biomass carbon storage and net primary production in different habitats of Hunshandake Sandland, China

Author:
Gang, Li; Gaoming, Jiang; Yonggeng, Li; Meizhen, Liu
Source:
Acta ecologica Sinica 2011 v.31 no.4 pp. 217-224
ISSN:
1872-2032
Subject:
Ulmus pumila; aboveground biomass; carbon; carbon sequestration; climate; dunes; ecosystem services; ecosystems; forage production; forests; grasslands; habitats; primary productivity; rain; savannas; trees; China
Abstract:
... Terrestrial ecosystems are playing important roles in global carbon cycling. However, the information is still limited with regard to the semi-arid sandland or desert area, compared with the thorough studies on forest and grassland. We here estimated the biomass carbon storage, net primary production (NPP) and rain use efficiency (RUE) of Hunshandake Sandland, a semi-arid sandy region in Inner Mon ...
DOI:
10.1016/j.chnaes.2011.04.006

5. Holocene eolian activation as a proxy for broad-scale landscape change on the Gila River Indian Community, Arizona

Author:
Wright, David K.; Forman, Steven L.; Waters, Michael R.; Ravesloot, John C.
Source:
Quaternary research 2011 v.76 no.1 pp. 10-21
ISSN:
0033-5894
Subject:
Entisols; catalysts; climate; data collection; dunes; landscapes; loess; luminescence; paleoclimatology; periodicity; quartz; rivers; watersheds; Arizona
Abstract:
... Eolian sediments are common within the middle Gila River Valley, southern Arizona, and reflect variability in eolian and fluvial processes during the late Holocene. This study focuses on deciphering the stratigraphic record of eolian deposition and associated luminescence dating of quartz extracts by single aliquot regeneration (SAR) protocols. Stratigraphic assessment coupled with luminescence ag ...
DOI:
10.1016/j.yqres.2011.04.008

6. Efficient fog harvesting by Stipagrostis sabulicola (Namib dune bushman grass)

Author:
Ebner, M.; Miranda, T.; Roth-Nebelsick, A.
Source:
Journal of arid environments 2011 v.75 no.6 pp. 524-531
ISSN:
0140-1963
Subject:
Stipagrostis; absorption; climate; deserts; dunes; grasses; harvesting; indigenous species; leaf water potential; leaves; root systems; runoff; soil water content; stemflow; stems; water supply; watersheds
Abstract:
... Stipagrostis sabulicola, an endemic grass species of the central Namib Desert, grows on dune fields under conditions of very low annual precipitation punctuated by regular nocturnal fog events. The objective of this study is to determine to what extent S. sabulicola relies on water supply by fog harvesting. The following parameters were monitored: 1) climate, 2) stem runoff, 3) leaf water potentia ...
DOI:
10.1016/j.jaridenv.2011.01.004

7. Acacia longifolia invasion impacts vegetation structure and regeneration dynamics in open dunes and pine forests

Author:
Rascher, Katherine G.; Große-Stoltenberg, André; Máguas, Cristina; Meira-Neto, João Augusto Alves; Werner, Christiane
Source:
Biological invasions 2011 v.13 no.5 pp. 1099-1113
ISSN:
1387-3547
Subject:
Acacia longifolia; canopy; climate; community structure; coniferous forests; drought; dunes; ecosystems; forest habitats; forest regeneration; indigenous species; leaf area index; light intensity; seedling growth; seedlings; shrubs; species diversity; trees; understory; Portugal
Abstract:
... Acacia spp. are among the most serious plant invaders worldwide, and Acacia longifolia specifically causes problems in Portugal. In this study, we evaluated the impacts of A. longifolia invasion on community structure, light climate, plant diversity and regeneration in pine forests and open stabilized dunes in northern and southern Portugal. Having the growth form of a small tree or shrub, between ...
DOI:
10.1007/s10530-011-9949-2

8. Terrestrial sensitivity to abrupt cooling recorded by aeolian activity in northwest Ohio, USA

Author:
Campbell, Melinda C.; Fisher, Timothy G.; Goble, Ronald J.
Source:
Quaternary research 2011 v.75 no.3 pp. 411-416
ISSN:
0033-5894
Subject:
climate; cold; cooling; deflation; dunes; ecotones; lakes; landscapes; luminescence; pollen; vegetation; Great Lakes region; Ohio
Abstract:
... Optically stimulated luminescence dated sand dunes and Pleistocene beach ridges in northwest Ohio are used to reconstruct landscape modification more than 5000yr after deglaciation. Four of the OSL ages (13.3–11.1ka) cluster around the Younger Dryas cold event, five ages (10.8–8.2ka) cluster around the Preboreal, one young age (0.9–0.7ka) records more recent aeolian activity, and one age of 15.1–1 ...
DOI:
10.1016/j.yqres.2011.01.009

9. Seasonal Erosion and Restoration of Mars' Northern Polar Dunes

Author:
Hansen, C.J.; Bourke, M.; Bridges, N.T.; Byrne, S.; Colon, C.; Diniega, S.; Dundas, C.; Herkenhoff, K.; McEwen, A.; Mellon, M.; Portyankina, G.; Thomas, N.
Source:
Science 2011 v.331 no.6017 pp. 575-578
ISSN:
0036-8075
Subject:
carbon dioxide; climate; dunes; environmental factors; image analysis; ravines; sand; spring; sublimation; wind
Abstract:
... Despite radically different environmental conditions, terrestrial and martian dunes bear a strong resemblance, indicating that the basic processes of saltation and grainfall (sand avalanching down the dune slipface) operate on both worlds. Here, we show that martian dunes are subject to an additional modification process not found on Earth: springtime sublimation of Mars' CO₂ seasonal polar caps. ...
DOI:
10.1126/science.1197636