A Late-glacial–Holocene Fossil Insect Succession from Vallée des Merveilles, French Alps, and its Paleoecological Implications

Ponel, Philippe; Parchoux, Franck; Andrieu‐Ponel, Valérie; Juhász, Imola; Beaulieu, Jacques‐Louis de

doi:10.1080/15230430.2001.12003458

Cited by 8 publications

(3 citation statements)

References 3 publications

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“…2003). Lake deposits have been studied in terms of insect assemblages (Ponel et al . 2001; Gandouin & Franquet 2002), pollen spectra and 14 C dating (Jorda 1983; Dijkstra et al .…”

mentioning

confidence: 99%

Exposure age dating and Equilibrium Line Altitude reconstruction of an Egesen moraine in the Maritime Alps, Italy

Federici

Granger

Pappalardo

et al. 2007

Boreas

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“…2003). Lake deposits have been studied in terms of insect assemblages (Ponel et al . 2001; Gandouin & Franquet 2002), pollen spectra and 14 C dating (Jorda 1983; Dijkstra et al .…”

mentioning

confidence: 99%

Exposure age dating and Equilibrium Line Altitude reconstruction of an Egesen moraine in the Maritime Alps, Italy

Federici

Granger

Pappalardo

et al. 2007

Boreas

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“…In addition, in periglacial environments, wet climates and water stress can coexist, as moisture availability may be reduced by permanent freezing (permafrost) rather than by decreases in the hydrological balance (precipitation/evaporation ratio) characteristic of arid climates. The vegetation of these environments is known as periglacial desert and occurs on highland tundra-like biomes (Ponel et al, 2001;Bertran et al, 2013). Care must be taken when assigning well-defined vegetational terms to unknown past vegetation types.…”

Section: Climate Changes Vegetation Shifts and Firementioning

confidence: 99%

A continuous centennial Lateglacial-Early Holocene (15-10 cal kyr BP) palynological record from the Iberian Pyrenees and regional comparisons

Rull

Blasco

Calero

et al. 2023

Preprint

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This paper presents the first continuous (gap-free) Lateglacial-Early Holocene (LGEH) pollen record for the Iberian Pyrenees resolved at centennial resolution. The main aims are (i) to provide a standard chronostratigraphic correlation framework, (ii) to unravel the relationships between vegetation shifts, climatic changes and fire, and (iii) to obtain a regional picture of LGEH vegetation for the Pyrenees and the surrounding lowlands. Seven pollen assemblage zones were obtained and correlated with the stadial/interstadial phases of the Greenland ice cores that serve as a global reference. Several well-dated datums were also derived for keystone individual taxa that are useful for correlation purposes. Four vegetation types were identified, two of them corresponding to conifer and deciduous forests (Cf, Df) and two representing open vegetation types with no modern analogs (periglacial herbs, or PH, and Saxifraga-Cichorioideae, or SC). The first two forests dominated during interstadial phases (Bolling/Allerod and Early Holocene), and PH dominated during stadials (Oldest Dryas and Younger Dryas), with SC being important only in the first half of the Younger Dryas. The use of pollen-independent proxies for temperature (oxygen isotopes) and moisture (titanium) allowed the reconstruction of paleoclimatic trends and the responses of the four vegetation types defined. The most relevant observation in this sense was the finding of wet climates during the Younger Dryas, which challenges the traditional view of arid Pyrenean conditions for this phase on the basis of former pollen records. Fire incidence was low until the early Holocene, when regional fires were exacerbated, probably due to the combination of higher temperatures and forest biomass accumulation. These results are compared with the pollen records available for the whole Pyrenean range and the surrounding lowlands within the framework of elevational, climatic and biogeographical gradients. Some potential future developments are suggested on the basis of the obtained results, with an emphasis on the reconsideration of the LGEH spatiotemporal moisture patterns and the comparison of the Pyrenees with other European ranges from different climatic and biogeographical regions.

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“…On the other hand, it should be noted that, in periglacial environments, wet climates and water stress can coexist, as moisture availability may be reduced by permanent freezing (permafrost) rather than by decreases in the hydrological balance characteristic of arid climates. Indeed, the vegetation of these environments, also known as periglacial deserts, occurs on highland tundra-like wet biomes [60,61]. Care must be taken when assigning well-defined vegetational terms to unknown past vegetation types.…”

Section: Gs-1 (Younger Dryas)mentioning

confidence: 99%

A Continuous Centennial Late Glacial-Early Holocene (15–10 cal kyr BP) Palynological Record from the Iberian Pyrenees and Regional Comparisons

Rull,

Blasco,

Calero

et al. 2023

Plants

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This paper presents the first continuous (gap-free) Late Glacial-Early Holocene (LGEH) pollen record for the Iberian Pyrenees resolved at centennial resolution. The main aims are (i) to provide a standard chronostratigraphic correlation framework, (ii) to unravel the relationships between vegetation shifts, climatic changes and fire, and (iii) to obtain a regional picture of LGEH vegetation for the Pyrenees and the surrounding lowlands. Seven pollen assemblage zones were obtained and correlated with the stadial/interstadial phases of the Greenland ice cores that serve as a global reference. Several well-dated datums were also derived for keystone individual taxa that are useful for correlation purposes. Four vegetation types were identified, two of them corresponding to conifer and deciduous forests (Cf, Df) and two representing open vegetation types (O1, O2) with no modern analogs, dominated by Artemisia-Poaceae and Saxifraga-Cichorioideae, respectively. Forests dominated during interstadial phases (Bølling/Allerød and Early Holocene), whereas O1 dominated during stadials (Oldest Dryas and Younger Dryas), with O2 being important only in the first half of the Younger Dryas. The use of pollen-independent proxies for temperature and moisture allowed the reconstruction of paleoclimatic trends and the responses of the four vegetation types defined. The most relevant observation in this sense was the finding of wet climates during the Younger Dryas, which challenges the traditional view of arid conditions for this phase on the basis of former pollen records. Fire incidence was low until the Early Holocene, when regional fires were exacerbated, probably due to the combination of higher temperatures and forest biomass accumulation. These results are compared with the pollen records available for the whole Pyrenean range and the surrounding lowlands within the framework of elevational, climatic and biogeographical gradients. Some potential future developments are suggested on the basis of the obtained results, with an emphasis on the reconsideration of the LGEH spatiotemporal moisture patterns and the comparison of the Pyrenees with other European ranges from different climatic and biogeographical regions.

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A Late-glacial–Holocene Fossil Insect Succession from Vallée des Merveilles, French Alps, and its Paleoecological Implications

Cited by 8 publications

References 3 publications

Exposure age dating and Equilibrium Line Altitude reconstruction of an Egesen moraine in the Maritime Alps, Italy

Exposure age dating and Equilibrium Line Altitude reconstruction of an Egesen moraine in the Maritime Alps, Italy

A continuous centennial Lateglacial-Early Holocene (15-10 cal kyr BP) palynological record from the Iberian Pyrenees and regional comparisons

A Continuous Centennial Late Glacial-Early Holocene (15–10 cal kyr BP) Palynological Record from the Iberian Pyrenees and Regional Comparisons

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