Tracing marine flooding surface equivalents across freshwater peats and other wetland deposits by integrated sedimentological and pollen data

2021 ◽  
pp. 103830
Author(s):  
A. Amorosi ◽  
L. Bruno ◽  
M. Cacciari ◽  
B. Campo ◽  
V. Rossi
Keyword(s):  
Pollen Data

scholarly journals Holocene vegetation record of upland northern Calabria, Italy: Environmental change and human impact

The Holocene ◽  
2019 ◽  
Vol 29 (4) ◽  
pp. 633-647 ◽  
Author(s):  
Jan Sevink ◽  
Corrie C Bakels ◽  
Peter AJ Attema ◽  
Mauro A Di Vito ◽  
Ilenia Arienzo
Keyword(s):  
Bronze Age ◽  
Forest Decline ◽  
Human Impacts ◽  
Time Frame ◽  
Archaeological Record ◽  
Pollen Data ◽  
Plant Remains ◽  
Middle Bronze Age ◽  
Climatic Event ◽  
Mobile Pastoralism

Earlier studies on Holocene fills of upland lakes (Lago Forano and Fontana Manca) in northern Calabria, Italy, showed that these hold important palaeoecological archives, which however remained poorly dated. Their time frame is improved by new 14C dates on plant remains from new cores. Existing pollen data are reinterpreted, using this new time frame. Two early forest decline phases are distinguished. The earliest is linked to the 4.2 kyr BP climatic event, when climate became distinctly drier, other than at Lago Trifoglietti on the wetter Tyrrhenian side, where this event is less prominent. The second is attributed to human impacts and is linked to middle-Bronze Age mobile pastoralism. At Fontana Manca (c. 1000 m a.s.l.), it started around 1700 BC, in the higher uplands a few centuries later (Lago Forano, c. 1500 m a.s.l.). In the Fontana Manca fill, a thin tephra layer occurs, which appears to result from the AP2 event (Vesuvius, c. 1700 BC). A third, major degradation phase dates from the Roman period. Land use and its impacts, as inferred from the regional archaeological record for the Raganello catchment, are confronted with the impacts deduced from the palaeoarchives.

scholarly journals Comment on reinterpreting the pollen data from Dos Cabezas

2007 ◽  
Vol 17 (5) ◽  
pp. 531-541 ◽  
Author(s):  
Karl J. Reinhard ◽  
Vaughn M. Bryant ◽  
Sheila Dorsey Vinton
Keyword(s):  
Pollen Data

A Review of the Earliest Evidence of Agriculture in Lithuania and the Earliest Direct AMS Date on Cereal

2017 ◽  
Vol 21 (2) ◽  
pp. 264-279 ◽  
Author(s):  
Mindaugas Grikpėdis ◽  
Giedre Motuzaite Matuzeviciute
Keyword(s):  
Bronze Age ◽  
Current Knowledge ◽  
Indirect Evidence ◽  
Cultivated Plants ◽  
Neolithic Period ◽  
Pollen Data ◽  
Baltic Region ◽  
Stratigraphic Sequence ◽  
Crop Cultivation ◽  
The Bronze Age

Current knowledge of the beginnings of crop cultivation in Lithuania is based mainly on Cerealia-type pollen data supplemented by other indirect evidence such as agricultural tools. We argue that these records, predating carbonized remains of cultivated plants, are not substantial enough indicators of the early stages of agriculture in Lithuania. Here, we demonstrate that the macroremains of cultural plants that were previously reported from two Neolithic settlements in Lithuania were either mistakenly identified as domestic crops or incorrectly ascribed to the Neolithic period due to movement through the stratigraphic sequence and the absence of direct dating of cereal grains. Furthermore, we present a charred Hordeum vulgare grain from the Bronze Age settlement of Kvietiniai in western Lithuania. It was AMS-dated to 1392–1123 cal bc, and at present represents the earliest definite evidence for a crop in the eastern Baltic region. We conclude that, presently, there are no grounds to suggest that crop cultivation took place in Lithuania during the Neolithic.

German pollen calendar 4.0 – update based on 2011–2016 pollen data

2018 ◽  
Vol 27 (3) ◽  
pp. 69-71 ◽  
Author(s):  
Matthias Werchan ◽  
Barbora Werchan ◽  
Karl-Christian Bergmann
Keyword(s):  
Pollen Calendar ◽  
Pollen Data

Environmental evolution and anthropogenic forcing in the Garigliano coastal plain (Italy) during the Holocene

The Holocene ◽  
2021 ◽  
pp. 095968362110032
Author(s):  
Halinka Di Lorenzo ◽  
Pietro Aucelli ◽  
Giuseppe Corrado ◽  
Mario De Iorio ◽  
Marcello Schiattarella ◽  
...  
Keyword(s):  
Human Activity ◽  
Coastal Plain ◽  
Forest Cover ◽  
Environmental Changes ◽  
Pollen Data ◽  
Human Environment ◽  
The Holocene ◽  
Natural Processes ◽  
History Of ◽  
The Rich

The Garigliano alluvial-coastal plain, at the Latium-Campania border (Italy), witnessed a long-lasting history of human-environment interactions, as demonstrated by the rich archaeological knowledge. With the aim of reconstructing the evolution of the landscape and its interaction with human activity during the last millennia, new pollen results from the coastal sector of the Garigliano Plain were compared with the available pollen data from other nearby sites. The use of pollen data from both the coastal and marine environment allowed integrating the local vegetation dynamics within a wider regional context spanning the last 8000 years. The new pollen data presented in this study derive from the analysis of a core, drilled in the coastal sector, which intercepted the lagoon-marshy environments that occurred in the plain as a response to the Holocene transgression and subsequent coastal progradation. Three radiocarbon ages indicate that the chronology of the analyzed core interval ranges from c. 7200 to c. 2000 cal yr BP. The whole data indicate that a dense forest cover characterized the landscape all along the Prehistoric period, when a few signs of human activity are recorded in the spectra, such as cereal crops, pasture activity and fires. The main environmental changes, forced by natural processes (coastal progradation) but probably enhanced by reclamation works, started from the Graeco-Roman period and led to the reduction of swampy areas that favoured the colonisation of the outer plain.

A natural intergeneric hybrid of Gesneriaceae from Brazil

Phytotaxa ◽  
2021 ◽  
Vol 497 (2) ◽  
pp. 79-96
Author(s):  
ANDRÉA ONOFRE DE ARAUJO ◽  
MAURO PEIXOTO ◽  
CINTIA NEVES DE SOUZA ◽  
EDUARDO CUSTÓDIO GASPARINO ◽  
JULIANA TOLEDO FARIA ◽  
...  
Keyword(s):  
Chromosome Numbers ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
Intergeneric Hybrid ◽  
Morphological Characters ◽  
Natural Hybrid ◽  
Pollen Data ◽  
Cytological Data ◽  
High Viability ◽  
Structural Abnormalities

A natural hybrid between Goyazia and Mandirola (Gloxiniinae, Gesneriaceae) from Cerrado (Brazil) is here described, supported by pollen morphology, cytological data and morphological characters. The microsporogenesis of Mandirola hirsuta and that of the hybrid were analyzed in order to evaluate the cytogenetic characteristics. The haploid chromosome numbers observed were n = 12 for M. hirsuta and n = 11, 13, 16 and 26 for the hybrid. Structural abnormalities (monads, dyads, triads and micronuclei) were observed at the final of the hybrid’s meiosis. High viability rates of the pollen were recorded for Goyazia and Mandirola (>90%) and low viability for the hybrid (34.7%). The pollen grains were acetolyzed, measured and photographed for pollen morphology analysis. Quantitative pollen data were analyzed through descriptive and multivariate statistics. The hybrid has intermediate pollen characteristics between G. petraea and M. hirsuta; it is more related to G. petraea by the measures of diameters and ectoapertures; it is more similar to M. hirsuta mainly regarding the microreticulum on the mesocolpium region. The hybrid and Mandirola share vegetative and flower size, while the colors of the hybrid are similar to Goyazia. Pollen morphology, cytological data and morphological characters brought clear evidence for the recognition of the intergeneric hybrid, which we named as Goydirola x punctata.

Late-Glacial Cooling in Amazonia Inferred from Pollen at Lagoa do Caçó, Northern Brazil

2001 ◽  
Vol 55 (1) ◽  
pp. 47-56 ◽  
Author(s):  
Marie-Pierre Ledru ◽  
Renato Campello Cordeiro ◽  
José Maria Landim Dominguez ◽  
Louis Martin ◽  
Philippe Mourguiart ◽  
...  
Keyword(s):  
Amazon Basin ◽  
Ice Core ◽  
Late Glacial ◽  
Climatic Conditions ◽  
Convective Precipitation ◽  
Pollen Data ◽  
Moisture Source ◽  
Northern Latitudes ◽  
Low Latitudes ◽  
Northern Brazil

AbstractNew pollen data from a core at Lagoa do Caçó, Maranhão state, Brazil (2°58′S 43°25′W; 120 m elevation), show higher frequencies of Podocarpus at the end of the Pleistocene than today. The increase in Podocarpus, which follows the successive increase of various pioneer species such as Didymopanax, Melastomataceae/Combretaceae, and Cecropia, implies a progressive late-glacial increase of moist and cool climatic conditions. A comparable increase in Podocarpus is found in other lowland records in Amazonia. A review of published pollen data from Amazonia suggests that the moisture source was from the southeast. By contrast, present-day moisture comes from the tropical Atlantic and from the Amazon basin, with its convective precipitation. The likely cause for the southeastern moisture source between ca. 15,000 and 14,500 cal yr B.P. was enhanced polar (Antarctic) advection that reached low latitudes and maintained year-round the meteorological equator in its austral-winter position at northern latitudes or reduced drastically its southward summer displacement. This hypothesis is consistent with marine and ice core records.

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