A glimpse to Laguna de los Cisnes, a field laboratory and natural monument in the Chilean Patagonia

Fuentes, Norka; Gajardo, Gonzalo

doi:10.3856/vol45-issue2-fulltext-24

Cited by 8 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Los Cisnes lagoon is an area with diverse habitats (Fuentes-González & Gajardo, 2017). This wetland is formed by a lagoon with a long peninsula protruded into it and surrounded by several temporary shallow water bodies and muddy areas used as feeding places for charadriiforms such as White-rumped Sandpiper Calidris fuscicollis , Baird’s Sandpiper C. bairdii , Two-banded Plover Charadrius falklandicus , Rufous-chested Plover C. modestus and the Magellanic Plover Pluvianellus socialis .…”

Section: Discussionmentioning

confidence: 99%

First report of cestode infection in the crustaceanArtemia persimilisfrom Southern Chilean Patagonia and its relation with the Neotropical aquatic birds

Redón

Vasileva

Georgiev

et al. 2019

PeerJ

Self Cite

View full text Add to dashboard Cite

The brine shrimp genusArtemiaLeach (Crustacea, Branchiopoda), a keystone group in hipersaline wetlands all over the world, offers an excellent model to study species interactions (parasitism) and to explore “hidden fauna” (avian endoparasites). The present study is the first report on the parasite infection of the South American speciesArtemia persimilisfrom the Southern Chilean Patagonia (50°S–53°S). Samples were collected in Los Cisnes and Amarga lagoons, the two most austral populations of this crustacean described to date, during two seasons (spring and autumn). A total of 98 larvae of cestodes of the family Hymenolepididae (Cestoda, Cyclophyllidea) were found and identified as belonging to the following taxa:Confluaria podicipina(adult parasitic in grebes),Flamingolepissp. (a cestode parasite of flamingos),Fimbriarioides(?) sp. (adults of the species of this genus infect waterfowl and shorebirds) andWardiumsp. (definitive host unknown, most probably charadriiform birds). This is a new geographical record ofC. podicipinaand the genusFimbriarioidesfor the Neotropical Region, the latter being the most widely distributed species at both localities and seasons surveyed, and the only species recorded in autumn (April). Cestode community composition in Los Cisnes population was characterised by dominance ofFlamingolepissp., representing more than 65% of the total cestode species recorded, whereas in the Amarga population the most abundant parasite (>83%) wasFimbriarioides(?) sp. Significant seasonal variations were detected in Los Cisnes lagoon forFlamingolepissp. andC. podicipina, with exclusive presence of them in spring (November). Besides providing novel information on cestodes infection inA. persimilis,this study provides new data on the life cycle of cestodes of Neotropical aquatic birds such as South American flamingos and grebes. Our finding expands the knowledge on the biodiversity and population dynamics of extreme and unique environments from high latitudes (Patagonia) and makes evident the need of further taxonomical and ecological studies for better understanding the life cycles of avian helminth parasites in the Neotropics and the role of aquatic invertebrates in them.

show abstract

Section: Discussionmentioning

confidence: 99%

First report of cestode infection in the crustaceanArtemia persimilisfrom Southern Chilean Patagonia and its relation with the Neotropical aquatic birds

Redón

Vasileva

Georgiev

et al. 2019

PeerJ

Self Cite

View full text Add to dashboard Cite

show abstract

“…(figura 2g). (Soto, 2016;Fuentes y Gajardo, 2017). Se realizó un práctico para medir la salinidad de diferentes cuerpos de agua, con énfasis en ambientes hipersalinos.…”

Section: Resultsunclassified

“…La región de Magallanes y Antártica chilena es un laboratorio natural que aloja variadas especies de microalgas adaptadas a condiciones extremas, que se desarrollan tanto en las costas oceánicas como en ríos y lagos (Franzmann y Dobson 1993;Taton et al, 2006;Alves de Souza et al, 2008;Cañete et al, 2013;Díaz et al, 2014;Fuentes y Gajardo, 2017). Esta región se ubica en el extremo sur de Chile y presenta ríos caudalosos, fiordos y lagos, así como áreas amplias cubiertas de hielo.…”

Section: áRea De Estudiounclassified

Microalgas entre escolares de la región de Magallanes-sur de Chile. Una experiencia para desarrollar competencias científicas y divulgar la ciencia

Sánchez

2021

Intropica

View full text Add to dashboard Cite

Con el objetivo de dar a conocer el mundo de las microalgas a estudiantes de la Región de Magallanes (extremo sur austral de Chile), en 2014 surgió la iniciativa “Microcazadores de luz”. Entre 2018 y 2020, niños de 10 a 12 años participaron en actividades teórico-prácticas que les permitieron conocer varios grupos de microalgas de la región de Magallanes, así como su ecología, importancia y potencial uso biotecnológico. Los talleres teórico-prácticos fueron diseñados en formato de juego, imaginando que las microalgas pertenecen a un ejército casi invisible llamado microcazadores de Luz. Se estudiaron ejemplos de diferentes grupos de microalgas tales como cianófitas (Anabaena), diatomeas (Didymosphenia geminata), clorófitas (Chlamydomonas nivalis) y haptófitas (Braarudosphaera bigelowii), abarcando aspectos biológicos, morfológicos y ecológicos. En total, participaron 109 niños en cinco talleres, realizados en las ciudades de Punta Arenas y Puerto Natales. Los temas fueron presentados mediante historias y/o personificaciones de varias especies de microalgas, representativas de algunos ecosistemas de la región. También se visitaron varios laboratorios donde se cultivan las microalgas y se colectaron muestras que posteriormente fueron revisadas por los niños en el laboratorio. Los talleres tuvieron buena recepción por parte de niños y apoderados, como se evidenció en la rápida terminación de cupos y la alta asistencia.

show abstract

“…A high‐resolution (4800 × 3689) image of the LLC obtained from this same software formed the basis for identifying the different coastlines that characterize the geomorphology of the basin. These data were correlated with historical lake descriptions (Jory et al ., 1974; Cordero, 2007; Fuentes & Gajardo, 2017) and plotted using Adobe Illustrator (Version 24.3). To ascertain the elevation of successive coastlines relative to the height of algal–microbial buildups, topographic profiles along the basin flanks were acquired using Global Mapper software (Version 22.1; Blue Marble Geographics, USA) and relied on the ALOS World 3D – 30 m (AW3D30) global digital surface model.…”

Section: Methodsmentioning

confidence: 99%

The hidden biotic face of microbialite morphogenesis – a case study from Laguna de Los Cisnes, southernmost Patagonia (Chile)

Pollier,

Guerrero,

Rabassa

et al. 2024

Sedimentology

View full text Add to dashboard Cite

Microbialites provide geological evidence into Earth's early ecosystems, recording long‐standing interactions between co‐evolving life and the environment. Yet, after more than 100 years of research, the complex interplay between environmental and biological forces involved in microbialite growth is still debated. Laguna de Los Cisnes, located in Chilean Tierra del Fuego, Patagonia, provides a unique opportunity to study these interactions. This lake, which became ice‐free around 10 000 years ago, features carbonate microbialites developed by algal–microbial communities. Macroscopically, the organo‐sedimentary deposits exhibit a consistent primary crater‐like architecture, showcasing macrostructural variations such as dish‐shaped, hemispherical, columnar and lenticular morphologies. This study explores the environmental and biological factors shaping microbialite macrostructure by analysing the distribution of dominant morphotypes across the basin. Concurrently, it examines the internal mesostructure and microstructure of microbialites in association with prevailing algal–microbial communities. The incremental development of these communities contributes to the distinct crater‐like morphology observed in microbialites from Laguna de Los Cisnes. The mineral encrustation of the green alga Percursaria percursa emerges as a primary driver of lithification, evidenced by the preservation of microfossils within the microstructure of the microbialites. Simultaneously, physical environmental factors, including waves, Langmuir cells and accommodation space influence the location of the algal–microbial carbonate factory, determining the spatial distribution and temporal succession of different crater architecture variants. Laguna de Los Cisnes, hosting well‐preserved subfossil outcrops and living microbialites, serves as a remarkable living laboratory for understanding microbialite morphogenesis. This study contributes to a novel model that captures the fundamental role of algal–microbial communities in determining the primary macrostructural architecture of microbialites before environmental factors come into play, merely reshaping this architecture into different morphotypes.

show abstract

A glimpse to Laguna de los Cisnes, a field laboratory and natural monument in the Chilean Patagonia

Cited by 8 publications

References 11 publications

First report of cestode infection in the crustaceanArtemia persimilisfrom Southern Chilean Patagonia and its relation with the Neotropical aquatic birds

First report of cestode infection in the crustaceanArtemia persimilisfrom Southern Chilean Patagonia and its relation with the Neotropical aquatic birds

Microalgas entre escolares de la región de Magallanes-sur de Chile. Una experiencia para desarrollar competencias científicas y divulgar la ciencia

The hidden biotic face of microbialite morphogenesis – a case study from Laguna de Los Cisnes, southernmost Patagonia (Chile)

Contact Info

Product

Resources

About