Surviving after an eruption: Ecosystem dynamics and mycorrhizae in Nothofagus pumilio forests affected by the 2011 Puyehue Cordón-Caulle tephra

Moguilevsky, Denise; Fernández, Natalia; Puntieri, Javier; Outes, Valeria; Fontenla, Sonia

doi:10.1016/j.foreco.2020.118535

Cited by 7 publications

(5 citation statements)

References 55 publications

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“…Moreno et al (2019) also show a high-resolution vegetation reconstruction in Patagonia since the Late Pleistocene despite the presence of numerous tephra layers, inferring a high resilience of the Nothofagus forest when facing stochastic disturbing events. Volcanic eruptions have been demonstrated to affect both plant growth and productivity (Moguilevsky et al, 2018) as well as causing massive tree mortality (up to 80% in North Patagonia) and burial of understory species, reducing plant richness (Moguilevsky et al, 2021). We do not infer major changes in vegetation after tephra deposition in this region, probably due to secondary ash sedimentation in both basins as supported by the minimum pollen concentration at every sediment layer, related to continuous pollen deposition over time, even after volcanic events.…”

Section: Local Vegetation and Fire Historymentioning

confidence: 55%

Late Pleistocene to Holocene vegetation changes in southeastern Patagonia (49° S): landscape changes related to disturbances

Merino‐Campos,

Sottile,

de Porras

et al. 2024

J Quaternary Science

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Southeastern Patagonia's (49° S) post‐glacial history inferred from high Andean lake sediments provides new insights regarding Late Pleistocene and Holocene vegetation dynamics at the eastern margin of the Southern Patagonian Icefield. The fossil records of pollen, charcoal and geochemical data from tephra layers from Laguna Chiquita and Laguna Gemelas Este were analysed to reveal past landscape dynamics related to vegetation changes, fire and volcanic events from ca. 15 200 cal a bp to the present. Nothofagus forest expanded over shrubland communities sometime between 15 200 and 4600 cal a bp, along with at least three disturbance sources related to the volcanic eruptions of Lautaro, Aguilera and Hudson, important local fire episodes, and neoglacial advances. Major charcoal deposition reveals moderate fire activity during the Late Pleistocene related to an open landscape characterised by a grass/shrub steppe. Local glacier advances may have affected the Laguna Gemelas Este sedimentation. Tephra deposition events do not correlate to vegetation changes inferred from the Laguna Gemelas Este and Laguna Chiquita pollen records. Late Holocene eastern Andean forest changes and fire activity at 49° S match other southern palaeoenvironmental records (50–52° S) suggesting that changes in the Southern Westerly Wind latitudinal position and intensity drove major palaeovegetation and fire dynamics before the European settlement. In the last centuries, fire and vegetation changes have been closely related to an increase in local ignition sources and the introduction of alien species.

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Section: Local Vegetation and Fire Historymentioning

confidence: 55%

Late Pleistocene to Holocene vegetation changes in southeastern Patagonia (49° S): landscape changes related to disturbances

Merino‐Campos,

Sottile,

de Porras

et al. 2024

J Quaternary Science

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“… 39 No Exotic Vegetation description Yes NHNP Moguilevsky et al . 40 2019 1 No Exotic Vegetation description Yes NHNP NHNP management plan 41 2018 1 No Introduced Vegetation description Yes NHNP Martín-Albarracín et al . 42 2017 1 Yes Exotic Register of length, growth and architecture No Las Golondrinas Stecconi et al .…”

Section: Resultsmentioning

confidence: 99%

Common juniper, an overlooked conifer with high invasion potential in protected areas of Patagonia

Franzese

Ripa

2023

Sci Rep

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The benefits of early detection of biological invasions are widely recognized, especially for protected areas (PAs). However, research on incipient invasive plant species is scarce compared to species with a recognized history of invasion. Here, we characterized the invasion status of the non-native conifer Juniperus communis in PAs and interface areas of Andean Patagonia, Argentina. We mapped its distribution and described both the invasion and the environments this species inhabits through field studies, a literature review, and a citizen science initiative. We also modeled the species’ potential distribution by comparing the climatic characteristics of its native range with those of the introduced ranges studied. The results show that J. communis is now widely distributed in the region, occurring naturally in diverse habitats, and frequently within and close to PAs. This species can be considered an incipient invader with a high potential for expansion in its regional distribution range, largely due to its high reproductive potential and the high habitat suitability of this environment. Early detection of a plant invasion affords a valuable opportunity to inform citizens of the potential risks to high conservation value ecosystems before the invader is perceived as a natural component of the landscape.

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“…2014; Moguilevsky et al . 2021), soil processes (i.e. microbial enzymatic activity, litter decomposition, nutrient availability; Berenstecher et al .…”

Section: Discussionmentioning

confidence: 99%

“…Mt St Helens, Antos and Zobel 2005) can also provide useful insights into the response of terrestrial ecosystems to ash inundation that ultimately affects the up-building architecture of the cover-bed stratigraphy. For example, in the aftermath of the PCC-2011 eruption, impacts on plant growth (floristic changes, plant mortality, succession trajectories; Bermúdez and Delpino 2011;Gonzaĺez et al 2014;Moguilevsky et al 2021), soil processes (i.e. microbial enzymatic activity, litter decomposition, nutrient availability; Berenstecher et al 2017) and soil faunal communities (Pirk 2014;Ruggiero and Werenkraut 2014) are well-documented and collectively suggest that flora and biotic processes across the Andean montane and steppe environments are more resistant and resilient to ash disturbance than previously thought, with substantial capacity to positively respond even within short (decadal) time frames.…”

Section: Rates Of Soil Up-building In the Aftermath Of Ice-lobe Reces...mentioning

confidence: 99%

Refinement of the tephrostratigraphy straddling the northern Patagonian Andes (40–41°S): new tephra markers, reconciling different archives and ascertaining the timing of piedmont deglaciation

Alloway

Pearce

Moreno

et al. 2021

J Quaternary Science

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We describe the stratigraphy, age, geochemistry and correlation of tephra from west to east across the northern Patagonian Andes (c. 40-41°S) with a view to further refining the eruptive history of this region back to the onset of the Last Glacial Termination (~18 cal. ka). Eastwards across the Andes, rhyodacite to rhyolitic tephra markers of dominantly Puyehue-Cordón Caulle source are persistently recognised and provide a stratigraphic context for more numerously erupted intervening tephra of basalt to basaltic-andesite composition. Tephra from distal eruptive centres are also recognised.West of the Andean Cordillera, organic-rich cores from a small closed lake basin (Lago Pichilafquén) reveal an exceptional high-resolution record of lowland vegetation-climate change and eruptive activity spanning the last 15 400 years. Three new rhyodacite tephra (BT6-T1, -T2 and -T4) identified near the base of the Pichilafquén record, spanning 13.2 to 13.9 cal. ka BP, can be geochemically matched with correlatives in basal andic soil sequences closely overlying regolith and/or basement rock. The repetitiveness of this tephrostratigraphy across this Andean transect suggests near-synchronous tephra accretion and onset of up-building soil formation under more stable (revegetating) ground-surface conditions following rapid piedmont deglaciation on both sides of the Cordillera by at least ~14 cal. ka BP.

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Surviving after an eruption: Ecosystem dynamics and mycorrhizae in Nothofagus pumilio forests affected by the 2011 Puyehue Cordón-Caulle tephra

Cited by 7 publications

References 55 publications

Late Pleistocene to Holocene vegetation changes in southeastern Patagonia (49° S): landscape changes related to disturbances

Late Pleistocene to Holocene vegetation changes in southeastern Patagonia (49° S): landscape changes related to disturbances

Common juniper, an overlooked conifer with high invasion potential in protected areas of Patagonia

Refinement of the tephrostratigraphy straddling the northern Patagonian Andes (40–41°S): new tephra markers, reconciling different archives and ascertaining the timing of piedmont deglaciation

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