Geographic expansion and dominance of the invading species Drosophila nasuta (Diptera, Drosophilidae) in Brazil

2020 ◽  
Vol 24 (3) ◽  
pp. 525-534
Author(s):  
Danubia Guimarães Silva ◽  
Hermes José Schmitz ◽  
Hermes Fonseca de Medeiros ◽  
Cláudia Rohde ◽  
Martín Alejandro Montes ◽  
...  
Keyword(s):  
Invading Species ◽  
Geographic Expansion ◽  
Drosophila Nasuta

First Records of the Invading Species Drosophila Nasuta (Diptera: Drosophilidae) in the Amazon

2022 ◽  
Author(s):  
Hermes Fonseca de Medeiros ◽  
Márcia Pereira Monteiro ◽  
Antônio Wesley Barros Caçador ◽  
Camila Miranda Pereira ◽  
Catarina de Lurdes Bezerra Praxedes ◽  
...  
Keyword(s):  
Invading Species ◽  
Drosophila Nasuta

The early stages of spontaneous forest regeneration on poor soils and continental sand dunes in northern Belgium

1983 ◽  
Vol 49 ◽  
Author(s):  
M. Van Miegroet
Keyword(s):  
Scots Pine ◽  
Age Differences ◽  
Forest Regeneration ◽  
Sand Dunes ◽  
Mixed Forest ◽  
Pedunculate Oak ◽  
White Poplar ◽  
Technical Problems ◽  
Homogeneous Groups ◽  
Invading Species

Spontaneous  natural regeneration under variable conditions on sandy soils and continental  sand dunes were analysed in 5 locations in N.E. Belgium.     The number of seedlings varies between 14.000 and 522.000/ha. The most  prominent invading species are red oak, pedunculate oak and Scots pine.    Two principal types of regeneration are recognized : homogeneous groups of  oak or pine and mixtures, predominantly composed by the same species.  Pioneers such as birch, willow, white poplar and wild black cherry do not  play an important role.    Social differentiation sets in quite early and is mainly provoked by age  differences. Therefore early silvicultural intervention is advisable. The  growth relationships between the species indicate that Scots pine is not in  danger of spontaneous elemination by other species. Because of the density  and variability of spontaneous forest regeneration, the conversion of pure  pine stands into mixed forest, using group regeneration to this end, poses no  real technical problems.

scholarly journals Directional changes in Levallois core technologies between Eastern Africa, Arabia, and the Levant during MIS 5

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
James Blinkhorn ◽  
Huw S. Groucutt ◽  
Eleanor M. L. Scerri ◽  
Michael D. Petraglia ◽  
Simon Blockley
Keyword(s):  
Homo Sapiens ◽  
Environmental Parameters ◽  
Detailed Comparison ◽  
Eastern Africa ◽  
Middle Pleistocene ◽  
Reduction Activity ◽  
Core Technology ◽  
Geographic Expansion ◽  
First Time ◽  
Mis 5

AbstractMarine Isotope Stage (MIS) 5, ~ 130 to 71 thousand years ago, was a key period for the geographic expansion of Homo sapiens, including engagement with new landscapes within Africa and dispersal into Asia. Occupation of the Levant by Homo sapiens in MIS 5 is well established, while recent research has documented complementary evidence in Arabia. Here, we undertake the first detailed comparison of Levallois core technology from eastern Africa, Arabia, and the Levant during MIS 5, including multiple sites associated with Homo sapiens fossils. We employ quantitative comparisons of individual artefacts that provides a detailed appraisal of Levallois reduction activity in MIS 5, thereby enabling assessment of intra- and inter-assemblage variability for the first time. Our results demonstrate a pattern of geographically structured variability embedded within a shared focus on centripetal Levallois reduction schemes and overlapping core morphologies. We reveal directional changes in core shaping and flake production from eastern Africa to Arabia and the Levant that are independent of differences in geographic or environmental parameters. These results are consistent with a common cultural inheritance between these regions, potentially stemming from a shared late Middle Pleistocene source in eastern Africa.

Does the geographic expansion of banks reduce risk?

2016 ◽  
Vol 120 (2) ◽  
pp. 346-362 ◽  
Author(s):  
Martin R. Goetz ◽  
Luc Laeven ◽  
Ross Levine
Keyword(s):  
Reduce Risk ◽  
Geographic Expansion

scholarly journals Separating sources of density-dependent and density-independent establishment limitation in invading species

2016 ◽  
Vol 105 (2) ◽  
pp. 436-444 ◽  
Author(s):  
Erica N. Spotswood ◽  
Pierre Mariotte ◽  
Emily C. Farrer ◽  
Liana Nichols ◽  
Katharine N. Suding
Keyword(s):  
Density Dependent ◽  
Invading Species

Geographic Expansion of Dengue: The Impact of International Travel

2008 ◽  
Vol 92 (6) ◽  
pp. 1377-1390 ◽  
Author(s):  
Annelies Wilder-Smith ◽  
Duane J. Gubler
Keyword(s):  
International Travel ◽  
Geographic Expansion ◽  
The Impact

Aquatic Biofilms and Their Responses to Disinfection and Invading Species

1992 ◽  
Author(s):  
G. A. Smithers ◽  
E. B. Rodgers ◽  
D. C. Obenhuber ◽  
T. L. Huff
Keyword(s):  
Invading Species

scholarly journals The Effects of Geographic Expansion on Bank Efficiency

2001 ◽  
Vol 2001 (03) ◽  
pp. 1-42
Author(s):  
Allen N. Berger ◽  
◽  
Robert DeYoung
Keyword(s):  
Bank Efficiency ◽  
Geographic Expansion
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