Both lake regime and fish introduction shape autotrophic planktonic communities of lakes from the Patagonian Plateau (Argentina)

Saad, Juan Francisco; Porcel, Sol; Lancelotti, Julio L.; O’Farrell, Inés; Izaguirre, Irina

doi:10.1007/s10750-018-3660-6

Cited by 14 publications

(1 citation statement)

References 43 publications

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“…analyzed changes in phytoplankton, zooplankton, and periphyton in a tropical lake, observing that phytoplankton size classes varied similarly to the smaller size classes of zooplankton in the pelagic zone, whereas most periphyton size classes coincided with the larger zooplankton in the littoral zone. On the other hand, the paper by Saad et al (2019) showed differences in phytoplankton structure between fishless and fish-stocked lakes from Patagonia, with the presence of phycocyanin-rich picocyanobacteria only in fish-stocked lakes, and also the dominance of cyanobacteria in these systems. Another article dealt with biotic interactions between cyanobacteria and zooplankton at community level (Josué et al, 2019), evidencing that eutrophication and cyanobacterial dominance change the composition of zooplankton traits and reduce functional dispersion, leading to zooplankton niche overlap.…”

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Phytoplankton and its biotic interactions: Colin Reynolds’ legacy to phytoplankton ecologists

et al. 2019

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The 18th workshop of the International Association for Phytoplankton Taxonomy and Ecology (IAP), the first ''tropical'' IAP ever, the third one outside Europe, and the first one in South America, was held in Natal, Brazil, from August 27 to September 3, 2017, and its main ecological theme was the Phytoplankton and its biotic interactions. The taxonomic topic of the workshop was chosen based on function instead of phylogeny, and to link to the ecological theme of the

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Phytoplankton and its biotic interactions: Colin Reynolds’ legacy to phytoplankton ecologists

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Climate variability and trends in the reproductive habitat of the critically endangered hooded grebe

Lancelotti

Pessacg

Roesler

et al. 2020

Aquatic Conservation

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The population of the critically endangered hooded grebe (Podiceps gallardoi) has decreased drastically during recent decades. The effects of climate change on their reproductive area (Southern Patagonia) have been proposed as one of the potential causes of their critical situation. However, there is much uncertainty about climate variability and climate trends at local scales in Patagonia, and their effects on the hooded grebe habitat. Variability and trends in temperature, precipitation, and wind from 1960 to 2016 in one of the most important reproductive areas of hooded grebe – the Lake Strobel plateau – were analysed. A Landsat satellite image series (1973–2016) was used to evaluate changes in lake area in the region. Generalized linear models were used to analyse the relationship between the variation in lake area and climatic variables, including the Antarctic Oscillation Mode (AAO) index, which is the most important year to year pattern in climate variability at high latitudes of the Southern Hemisphere. High inter‐annual variability and increasing coefficients of variation in precipitation and wind were found, as well as a significant positive trend in temperature. Total lake area, as well as the area specifically used by hooded grebe to reproduce, decreased significantly over time, with high inter‐annual variability. Variation in lake area was significantly correlated with variation in precipitation, and with the AAO index. The loss of reproductive habitat may force the hooded grebe to use sub‐optimal environments, such as lakes with lower food supply, lower macrophyte cover, and less protection from wind – a potential major handicap for this declining species. Information on lake variation in response to climatic variability could be used to guide hooded grebe conservation strategies, directing more resources and special efforts to those reproductive lakes that are more resilient to the effects of climate fluctuations.

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Influence of the Fish Introduction in Lakes of the Arid Southern Patagonia

Porcel

Saad²,

Marinone³

et al. 2022

Natural and Social Sciences of Patagonia

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Both lake regime and fish introduction shape autotrophic planktonic communities of lakes from the Patagonian Plateau (Argentina)

Cited by 14 publications

References 43 publications

Phytoplankton and its biotic interactions: Colin Reynolds’ legacy to phytoplankton ecologists

Phytoplankton and its biotic interactions: Colin Reynolds’ legacy to phytoplankton ecologists

Climate variability and trends in the reproductive habitat of the critically endangered hooded grebe

Influence of the Fish Introduction in Lakes of the Arid Southern Patagonia

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