Results 21 to 30 of about 523 (166)

Diversity of mtDNA in Southern River Otter (Lontra provocax) from Argentinean Patagonia [PDF]

Journal of Heredity, 2008
Lontra provocax is an endemic species from Patagonia that has been categorized as "endangered" by the International Union for Conservation of Nature. In this study, noninvasive molecular methods were used to investigate the genetic diversity and haplotype distribution of L. provocax in Argentinean Patagonia.
Centron, Daniela, Ramírez, Benjamín Alejandro, Fasola, Laura, Macdonald, David W., Chehébar, Claudio, Schiavini, Adrian Carlos Miguel, Cassini, Marcelo Hernan   +6 more
openaire   +3 more sources

Appendicularians and marine snowin situvertical distribution in Argentinean Patagonia

Journal of Plankton Research, 2023
AbstractDetailed in situ vertical and temporal distribution of appendicularians, marine snow, fecal pellets, nano- and microplankton were recorded simultaneously with environmental data in the San Jorge Gulf, Argentinean Patagonia (45°–47°S). Data were taken at a fixed station over 36 h in February 2014 with an autonomous Video Plankton Recorder and a ...
Eloísa M Giménez, Ariadna C Nocera, Brenda Temperoni, Gesche Winkler   +3 more
openaire   +2 more sources

Sellaphora mayrii (Bacillariophyceae), a new diatom from the Argentinean Patagonia

Phytotaxa, 2020
A new species of Sellaphora was found in modern and fossil sediments from shallow-lake Laguna Gemelas Este, Santa Cruz, Argentina. The new taxon was studied with light microscopy and scanning electron microscopy. We present a detailed analysis of its morphology, supporting its placement in the genus Sellaphora Mereschkowsky, and report the physico ...
García, M. Luján, Morales, Eduardo A., Mann, David G., Maidana, Nora I.   +3 more
openaire   +2 more sources

Viajando pelo campo e pelas coleções: aspectos de uma controvérsia paleontológica Fieldtrips and collections: aspects of a Paleontology controversy

História, Ciências, Saúde: Manguinhos, 2001
O campo, os museus, as coleções e os catálogos entrelaçam-se nas redes de relações estabelecidas entre os naturalistas que desenvolveram suas carreiras na construção das ciências paleontológicas no Brasil e na Argentina, na transição para o século XX ...
Maria Margaret Lopes
doaj   +1 more source

Pollen analysis of honey from Chubut (Argentinean Patagonia) [PDF]

Grana, 2008
The pollen content of 140 samples collected between 1995 and 2004 was used to characterise the honey and determine the source of nectar that Apis mellifera L. uses in Chubut (Argentinean Patagonia). A diverse spectrum of 139 pollen types from 53 families was identified with the Asteraceae and Fabaceae being most frequent.
openaire   +1 more source

Two new species of Neotyphloceras (Siphonaptera: Ctenophthalmidae) from Argentinean Patagonia

Zootaxa, 2014
Two new species of Neotyphloceras Rothschild, parasites of sigmodontine rodents from Argentinean Patagonia, are described and illustrated: N. crackensis n. sp. and N. pardinasi n. sp. These species are compared with their morphologically closest relatives. Males are characterized by the shape of the upper lobe of the fixed process of clasper; the shape
Sánchez, Juliana Patricia, Lareschi, Marcela   +1 more
openaire   +3 more sources

Spatial variation in molluscan assemblages from coralline turfs of Argentinean Patagonia [PDF]

Journal of Molluscan Studies, 2007
Patterns of spatial variation of molluscan communities associated with coralline algal turfs were evaluated over 1,000 km of the coast of Argentinean Patagonia. A hierarchically-nested experimental design was used to determine the relative importance of molluscan assemblage variation at three different spatial scales (shores, sites and cores ...
Kelaher, Brendan P., Castilla, Juan Carlos, Prado, Luis, York, Paul, Schwindt, Evangelina, Bortolus, Alejandro   +5 more
openaire   +2 more sources

First report the role of benthic macroinvertebrates as preys for native fish in Toltén river (38° S, Araucania region Chile) [PDF]

Brazilian Journal of Biology
The Toltén river is located in the 137 years old Araucania region, Chile (38° S), and is characterized by low alterations through human interference due agriculture and towns in its surrounding basin, the presence of native fishes and salmonids, and by ...
J. Barile, R. Vega, P. De los Ríos-Escalante   +2 more
doaj   +2 more sources

Distribution and environmental determinants of darkling beetles assemblages (Coleoptera: Tenebrionidae) in Península Valdés (Argentinean Patagonia) [PDF]

Anais da Academia Brasileira de Ciências, 2021
Arid lands provide several products and services to humankind, but human activities affect this environment, increasing the extinction risk of the native species. Thus, to successfully conserve the biodiversity of these ecosystems, it is necessary to identify which environmental factors influence the spatial distribution of the organisms that offer ...
GERMÁN H. CHELI, RODOLFO CARRARA, LUCAS BANDIERI, GUSTAVO E. FLORES   +3 more
openaire   +6 more sources

REVISION OF THE MIOCENE CAVIOMORPH RODENTS FROM THE RÍO SANTA CRUZ (ARGENTINEAN PATAGONIA)

Publicación Electrónica de la Asociación Paleontológica Argentina, 2020
Fossil rodents from the Río Santa Cruz (RSC) classic localities (Santa Cruz Formation, Early–Middle Miocene) are known by the works of F. Ameghino and W.B. Scott since the end of the 19th and beginning of the 20th centuries. These caviomorph rodents have not been comprehensively reviewed since then.
Arnal, Michelle, Pérez, María Encarnación, Deschamps, Cecilia Marcela   +2 more
openaire   +5 more sources