Macroalgas submareales de los canales interiores del Parque Nacional Bernardo O&amp;#8217;Higgins (~49°- 51° S), región de Magallanes, Chile

Palacios, Mauricio

doi:10.4067/s0718-686x2018000300041

Cited by 3 publications

(3 citation statements)

References 14 publications

(17 reference statements)

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“…The rocky bottoms inside the channels and fjords host abundant and diverse macroalgae, which, in turn, provide a variety of microhabitats for benthic fauna. Moreover, Palacios (2018) reported the presence of extensive kelp forests dominated by Macrocystis pyrifera and with the presence of Durvillaea antarctica , which are identified as keystone species, playing an important ecological role by providing structural support ( Miller et al 2018 , Mills 2003 ) and enhancing dispersal ( López et al 2018 ) of benthic invertebrates.…”

Section: Sampling Methodsmentioning

confidence: 99%

“…The sedimentary bottoms were surveyed by the scientific expedition CIIMAR Fiordo 2 ( Silva and Palma 2008 , Palma and Silva 2008 ) from which general results for the macrofauna were presented by Mutschke (2008) , who stressed the scarcity of knowledge of the amphipod fauna in the region; species lists and biogeographic remarks have been carried out for the Polychaeta ( Montiel et al 2001 ) and Crustacea Decapoda ( Retamal and Arias 2000 ). On the other hand, the hard substrates of this central zone had never been surveyed until the survey carried out in Bernardo O’Higgins National Park (henceforward BONP) on-board the R/V Nueva Galicia ( Aldea et al 2011 , Aravena et al 2018 , Esquete and Aldea 2015 , Esquete et al 2012 , Palacios 2018 ) and whose data pertaining to peracarid crustaceans are presented here.…”

Section: Introductionmentioning

confidence: 99%

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Benthic Peracarids (Crustacea) from an unexplored area of Patagonian channels and Fjords

Esquete¹,

Aldea²

2020

BDJ

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The intricate geomorphology of the coastline in the Chilean Channels and Fjords region, together with the freshwater inputs from the ice fields provide the area with very unique ecological characteristics and a variety of habitats that favour great marine biodiversity. However, although Chilean Patagonia has been the focus of several expeditions and ecological surveys, the greatest emphasis has been either on the populated coasts of the Beagle Channel and the Straits of Magellan to the south or the area to the north of Golfo de Penas, leaving vast areas that remain largely unexplored. This leads to a latitudinal gap in the faunistic information and hinders zoogeographic studies to assess biogeographical connections along the eastern coasts of the Pacific. Peracarida is a taxonomic group that provides an excellent model for such studies because of their high abundance and biodiversity, benthic habits, small size and limited dispersal capacity. A dataset providing the first and only records of the benthic Peracarida between the latitudes 48–51.5°S of the Pacific coast of Chile is presented here, hence closing a geospatial gap for the study of the biogeographical connections of the Peracarida along the Eastern Pacific coast. The dataset comprises a total of 141 georeferenced records of 60 sublittoral species of Tanaidacea, Isopoda and Amphipoda. This and other studies reveal that the coastal fauna of the region follow a latitudinal distribution pattern at a larger scale and nested assemblages inside the channels and fjords that can be regarded as a consequence of the more restrictive conditions in the inner parts. In the present scenario of global warming that is expected to affect particularly polar and subpolar regions, the present dataset serves as a reference for the distribution patterns of benthic organisms with low dispersal capacity.

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Section: Sampling Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Benthic Peracarids (Crustacea) from an unexplored area of Patagonian channels and Fjords

Esquete¹,

Aldea²

2020

BDJ

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“…Esta especie de alga roja es originaria del noreste de Asia y se ha convertido en una especie invasora en Europa, Australia, Nueva Zelanda y América del Sur (Geoffroy et al 2012;Kim et al 2004). P. morrowii ha sido previamente reportada en otros sitios de alto tránsito marino en la Provincia Magallánica (Mansilla et al 2013), y se registra con una frecuencia creciente en los hábitats intermareales y submareales de la ecorregión subantártica de Magallanes (Jofre et al 2021;Palacios, 2018). El monitoreo y control de especies exóticas de macroalgas es prioritario para la conservación e integridad de estos hábitats costero-marinos subantárticos de Magallanes (Rozzi et al 2017(Rozzi et al , 2020.…”

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First catalogue of benthic marine macroalgae from glacier-influenced environments of the Beagle Channel, deposited in the new Sub-Antarctic Cryptogamic Herbarium (SCH) of the University of Magallanes

Rodriguez Provoste,

Gibelli,

Bahamonde

et al. 2024

AIP

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The environmental characteristics and geomorphological landscape in the sub-Antarctic Magellanic ecoregion underpin a biological diversity that evolved adapting to the microhabitats produced by these heterogeneous ecological conditions. The high level of endemism found in these biological communities is nowadays protected thanks to the creation of the Cape Horn Biosphere Reserve (CHBR), a natural laboratory at the southern end of the sub-Antarctic Magellanic ecoregion. Studies produced in this region offer a valuable knowledge of its biological, ecological and cultural facets in a state still scarcely impacted by anthropogenic activities. The retreat of glaciers present along the channels and fjords of the CHBR due to global climate change impacts the marine benthic and macroalgae communities hosted in these water bodies. European expeditions in the 18th and 19th centuries pioneered the works which provided our current knowledge about this subantarctic marine flora. Nevertheless, there is still a gap of taxonomic information of macroalgae diversity in the CHBR. To solve this gap, with support of the Cape Horn Internationional Center (CHIC), we created the Sub-Antarctic Cryptogamic Herbarium (SCH) hosted at the Antarctic and Sub-Antarctic Marine Ecosystems Laboratory (LEMAS), University of Magallanes. In 2020, the New York Botanical Garden indexed the SCH in its Index Herbariorum. This indexation granted by this world-renowned institution places the SCH's biological collection as the world's southernmost cryptogamic repository. As such, the SCH's botanical collection is currently the only gateway to the subantarctic ecosystem's biological legacy. The catalogue below provides information about the ecological and morphological characteristics of macroalgae deposited in the SCH, with particular focus on those species present in the CHBR. We identified 54 species. Among them 23 belong to the Rhodophyta division (43%), 19 species to the Chlorophyta division (35%), and 12 species to the Ochrophyta division (22%). In the context of rapid global change, involving increasingly threatened taxa due to human impact, baseline studies and records deposited at the SCH will provide an essential tool for assessing patterns of change and defining conservation practices to protect the rich biodiversity of these sub-Antarctic ecosystems.

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Better Urban Transport Improves Labour Market Outcomes: Evidence from a Subway Expansion in Chile

Asahi

2016

SSRN Journal

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Macroalgas submareales de los canales interiores del Parque Nacional Bernardo O’Higgins (~49°- 51° S), región de Magallanes, Chile

Cited by 3 publications

References 14 publications

Benthic Peracarids (Crustacea) from an unexplored area of Patagonian channels and Fjords

Benthic Peracarids (Crustacea) from an unexplored area of Patagonian channels and Fjords

First catalogue of benthic marine macroalgae from glacier-influenced environments of the Beagle Channel, deposited in the new Sub-Antarctic Cryptogamic Herbarium (SCH) of the University of Magallanes

Better Urban Transport Improves Labour Market Outcomes: Evidence from a Subway Expansion in Chile

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