Buscar
Mostrando ítems 1-10 de 7704
Seasonal and interannual variability in population abundances of the intertidal macroinfauna of Queule river estuary, south-central Chile
(Sociedad de Biología de Chile, 2001)
Abundance and Population Trends of the South American Fur Seal (Arctocephalus australis) in Uruguay
(European Association for Aquatic Mammals, 2019-01)
The report describes counts and trends of South American fur seals in Uruguay. Authors used digital aerial photography to count the fur seals, and also derived a correction factor for adjusting the photographic counts ...
A Noninvasive Demographic Assessment of the Sea Lions Base on Stage-Specific Abundance.
(Ecological Applications, 2008-01-01)
A pressing need exists to develop new approaches for obtaining information on demographic rates without causing further threats to imperiled animal populations. In this paper, we illustrate and apply a data-fitting technique ...
Seasonal variation of estuarine birds from Trapandé Bay, Cananéia, Brazil
(2022-01-01)
Estuaries are important environments for birds as resting and foraging sites. Therefore, information about the abundance, distribution, and biology of bird populations are necessary for preservation of such ecosystems. In ...
Diffusive dispersal in a growing ungulate population: guanaco expansion beyond the limits of protected areas
(Springer Berlin Heidelberg, 2018-04)
Growth of wild ungulate populations within protected areas can cause an expansion towards surrounding non-protected areas and lead to conflicts with human activities. The spatial and demographic structure of colonizing ...
Abundance ratios of red giants in low-mass ultra-faint dwarf spheroidal galaxies
(EDP SCIENCES, 2016-04)
Context. Low-mass dwarf spheroidal galaxies are key objects for our understanding of the chemical evolution of the pristine Universe and the Local Group of galaxies. Abundance ratios in stars of these objects can be used ...
Diffusive dispersal in a growing ungulate population: guanaco expansion beyond the limits of protected areas
(Springer, 2018)
Growth of wild ungulate populations within protected areas can cause an expansion towards surrounding non-protected areas and lead to conflicts with human activities. The spatial and demographic structure of colonizing ...
OXYGEN ABUNDANCES IN LOW- AND HIGH-alpha FIELD HALO STARS AND THE DISCOVERY OF TWO FIELD STARS BORN IN GLOBULAR CLUSTERS
(IOP PUBLISHING LTDBRISTOL, 2012)
Oxygen abundances of 67 dwarf stars in the metallicity range -1.6 < [Fe/H] < -0.4 are derived from a non-LTE analysis of the 777 nm O I triplet lines. These stars have precise atmospheric parameters measured by Nissen ...