Age and implications of the Forest Bed, Falkland Islands, southwest Atlantic Ocean: Evidence from fossil pollen and spores

2006 ◽  
Vol 240 (3-4) ◽  
pp. 602-629 ◽  
Author(s):  
Mike Macphail ◽  
David J. Cantrill
Keyword(s):  
Atlantic Ocean ◽  
Falkland Islands ◽  
Fossil Pollen ◽  
Southwest Atlantic ◽  
Pollen And Spores

scholarly journals Occurrence of larval ascaridoid nematodes in the Argentinean short-finned squid Illex argentinus from the Southwest Atlantic Ocean (off Falkland Islands)

2019 ◽  
Vol 297 ◽  
pp. 27-31 ◽  
Author(s):  
Paolo Cipriani ◽  
Lucilla Giulietti ◽  
Marialetizia Palomba ◽  
Simonetta Mattiucci ◽  
Miguel Bao ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Falkland Islands ◽  
Southwest Atlantic ◽  
Illex Argentinus

Benthic communities in the Southwest Atlantic Ocean: Conservation value of animal forests at the Burdwood Bank slope

2020 ◽  
Vol 30 (3) ◽  
pp. 426-439 ◽  
Author(s):  
Laura Schejter ◽  
Gabriel Genzano ◽  
Esteban Gaitán ◽  
Carlos D. Perez ◽  
Claudia S. Bremec
Keyword(s):  
Atlantic Ocean ◽  
Benthic Communities ◽  
Conservation Value ◽  
Southwest Atlantic ◽  
Bank Slope ◽  
Burdwood Bank ◽  
Ocean Conservation

A Late Holocene Paleoecological Record from Torrey Pines State Reserve, California

2000 ◽  
Vol 53 (3) ◽  
pp. 341-351 ◽  
Author(s):  
Kenneth L. Cole ◽  
Eugene Wahl
Keyword(s):  
Late Holocene ◽  
Climate Changes ◽  
Regional Climate ◽  
Sediment Chemistry ◽  
Fossil Pollen ◽  
Plant Type ◽  
The North ◽  
Low Genetic Diversity ◽  
Core Site ◽  
Pollen And Spores

AbstractPaleoenvironments of the Torrey Pines State Reserve were reconstructed from a 3600-yr core from Los Peñasquitos Lagoon using fossil pollen, spores, charcoal, chemical stratigraphy, particle size, and magnetic susceptibility. Late Holocene sediments were radiocarbon dated, while the historical sediments were dated using sediment chemistry, fossil pollen, and historical records. At 3600 yr B.P., the estuary was a brackish-water lagoon. By 2800 yr B.P., Poaceae (grass) pollen increased to high levels, suggesting that the rising level of the core site led to its colonization by Spartina foliosa (cord-grass), the lowest-elevation plant type within regional estuaries. An increase in pollen and spores of moisture-dependent species suggests a climate with more available moisture after 2600 yr B.P. This change is similar to that found 280 km to the north at 3250 yr B.P., implying that regional climate changes were time-transgressive from north to south. Increased postsettlement sediment input resulted from nineteenth-century land disturbances caused by grazing and fire. Sedimentation rates increased further in the twentieth century due to closure of the estuarine mouth. The endemic Pinus torreyana (Torrey pine) was present at the site throughout this 3600-yr interval but was less numerous prior to 2100 yr B.P. This history may have contributed to the low genetic diversity of this species.

scholarly journals Medusae and ctenophores from the Bahía Blanca Estuary and neighboring inner shelf (Southwest Atlantic Ocean, Argentina)

2017 ◽  
Vol 10 (1) ◽  
Author(s):  
M. Sofía Dutto ◽  
Gabriel N. Genzano ◽  
Agustín Schiariti ◽  
Julieta Lecanda ◽  
Mónica S. Hoffmeyer ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Inner Shelf ◽  
Bahía Blanca Estuary ◽  
Southwest Atlantic ◽  
Blanca Estuary

scholarly journals Composition of Trichiuridae and Gempylidae larvae (Teleostei) and their association with water masses in the Southwest Atlantic Ocean

2009 ◽  
Vol 38 (4) ◽  
Author(s):  
Paulo Júnior ◽  
Christiane de Souza ◽  
Graciela Weiss
Keyword(s):  
Temperature Gradient ◽  
Atlantic Ocean ◽  
Continental Shelf ◽  
Mesh Size ◽  
Water Masses ◽  
Southwest Atlantic ◽  
Patos Lagoon ◽  
La Plata ◽  
Tropical Water ◽  
The Relationship

Composition of Trichiuridae and Gempylidae larvae (Teleostei) and their association with water masses in the Southwest Atlantic OceanIn this paper the relationship between temporal changes in the occurrence of water masses and Trichiuridae and Gempylidae larvae composition and distribution in the Southwest Atlantic ocean were analysed between 25° and 40° S. Ichthyoplankton was collected during the three expeditions of the Subtropical Convergence Project: Winter and Spring 1977, Autumn 1978 and Summer 1981, realized in the Southwest Atlantic waters. Oblique tows were conducted using a Hensen net with 250 μm mesh size. Steep salinity and temperature gradient were found, where the river outflows from La Plata river (Argentina) and Patos Lagoon (Brazil) met the Tropical Water over the continental shelf between 32 and 36° S. We examined 524 Hensen-net samples that contained about 283 larvae from five species of Trichiuridae and Gempylidae. The most abundant and frequent specie were

Uterine dynamics of the southern eagle rayMyliobatis goodei(Chondrichthyes: Myliobatidae) from the southwest Atlantic Ocean

2013 ◽  
Vol 80 (2) ◽  
pp. 187-194 ◽  
Author(s):  
J. H. Colonello ◽  
H. E. Christiansen ◽  
M. B. Cousseau ◽  
G. J. Macchi
Keyword(s):  
Atlantic Ocean ◽  
Southwest Atlantic
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