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| Borromei,Ana M.; Quattrocchio,Mirta. |
| An early-middle Holocene section in Bahía Lapataia (54º 50' S, 68º 34' W), Beagle Channel, Tierra del Fuego, Argentina has been examined taking into account its sporomorphs and organic-walled microplankton. The palynological assemblage suggests nearshore environments. Two relatively higher sea levels were identified by the increased abundance of organic-walled dinoflagellate cysts (Brigantedinium spp., Selenopemphix sp., Operculodinium centrocarpum sensu Wall and Dale, Spiniferites spp.), the acritarch Halodinium sp. and zoomorph remains (test linings of foraminifera and copepod egg-envelopes). The littoral vegetation at the time of the marine incursion was mainly arboreal, as can be seen in the pollen records by significant increase in Nothofagus dombeyi... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Palynology; Paleoenvironment; Holocene transgression; Bahía Lapataia; Beagle Channel; Tierra del Fuego; Argentina. |
| Ano: 2007 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142007000100011 |
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| Brandt, Angelina. |
| During an expedition with RV Victor Hensen (1994) and the RV Polarstern (1996) Isopoda Sphaeromatidae were collected in and off the eastern entrance of the Beagle Channel. The species found, Caecocassidias patagonica Kussakin, 1967, Cassidinopsis emarginata (Guérin-Méneville, 1843) and Moruloidea darwinii (Cunningham, 1871), were previously all poorly or insufficiently described; therefore a redescription is presented herein. Exosphaeroma gigas (Leach, 1818) was also collected frequently, but it was already redescribed earlier and thus only the localities are presented. Moreover, a new species, Cymodopsis beageli, n.sp., which is most closely allied to Cymodopsis sphyracephalata Hurley & Janssen, 1977, is described from the Beagle Channel. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Crustacea; Isopoda; Taxonomy; Beagle Channel; South America; Southern Ocean; Subantarctic. |
| Ano: 1998 |
URL: http://www.repository.naturalis.nl/record/504937 |
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| Chen, G.T.; Herman, R.L.; Vincx, M.. |
| Meiofauna from 20 stations (ranging between 8 and 550 m) in the Magellan Straits and the Beagle Channel revealed 28 small sized taxa of higher categories including the temporary meiofauna. Nematoda, Copepoda Harpacticoidea and Polychaeta occurred in all samples; Turbellaria, Bivalvia, Kinorhyncha and Ostracoda were regularly present. Nematodes represented between 68% and 94% of the meiofauna at each station, followed by the copepods (2.3% to 14.5%) and polychaetes (1.1% to 11.5%). Maximal total density, 9700 individuals 10 cm(-2), was found in the surroundings of Picton Island, while the mean abundance per station was 3374 individuals 10 cm(-2). The vertical pattern within the sediment showed that 87% of meiofauna components concentrated in the upper 0-5... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Channels Community composition Meiobenthos Straits Taxa Vertical distribution Zonal distribution Zoobenthos Bivalvia Copepoda [copepods] Harpacticoida Kinorhyncha [spiny-crown worms] Nematoda [Nematodes] Ostracoda Polychaeta [Bristle worms] Turbellaria [Flatworms] PSW; Argentina; Tierra del Fuego; Beagle Channel PSW; Chile; Magellan Straits PSW; Chile; Tierra del Fuego; Beagle Channel. |
| Ano: 1999 |
URL: http://www.vliz.be/imisdocs/publications/256154.pdf |
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