Устройство радиационного контроля для кабинета флюорографии

The comparison of palaeoenvironmental and archaeological records of fossil insects with modern red data books can provide a picture of local extinctions. Buckland & Buckland (2012) performed such a study on the Coleoptera of the British Isles, using the BugsCEP database for the fossil data, and looking at broad chronological divisions. The ecology of these regionally extinct beetles, all of which are extant in other parts of the World, may be used to investigate the environmental and climatic changes which may have lead to their extirpation. This process can be semi-automated and habitats quantified through the use of ecological classification and a database infrastructure which links fossil and modern ecological and climate data (Buckland & Buckland 2006; http://www.bugscep.com). Preliminary results indicate that the majority of extirpated species with mid-Holocene records were dependent on woodland environments (Buckland 2014). These investigations can be refined by using narrower time-slices, interpolating dating evidence and including more comprehensive archaeological dating evidence. The expansion of the analysis to include the full assemblages found in the samples containing the extirpated species also allows for a more comprehensive picture of the long-term relationships between biodiversity, environmental and climatic change and human activity.Abstract will be published in conference abstract volume.BugsCE

The European palaeoecological record of Swedish red-listed beetles

Recent global changes have triggered a biodiversity crisis. However, climate fluctuations have always influenced biodiversity and humans have affected species distributions since prehistoric times. Conservation palaeobiology is a developing field that aims to understand the long-term dynamics of such interactions by studying the geohistorical records in a conservation perspective. Case studies exist for vertebrates and plants, but insects have largely been overlooked so far. Here, we analysed the current red-listed beetle species (Coleoptera) in Sweden and investigated their occurrence and representation in the European Quaternary fossil record. Fossil data currently exist for one third of the Swedish red-listed beetle species. All the red-list conservation classes are represented in the fossil record, which may allow for comparative studies. We found significantly different representations in the fossil records among taxonomic groups and ecological traits, which may depend on the fossil depositional and sampling environments and variation in how difficult species are to identify. Species that are today associated with modern urban environments were mostly found in Quaternary sites with archaeological human settlements, reflecting early human-driven environmental change. Combining modern and fossil insect species data for biodiversity conservation needs to be undertaken with care, and attention paid to biases in both modern and palaeo-data. Nevertheless, this approach opens new opportunities for conservation biology by providing a millennial-scale perspective on biodiversity change, including consideration of the long-term dynamics of species range shifts, species invasions and regional extinctions under changing climates

An Early Pleistocene interglacial deposit at Pingorsuit, North-West Greenland

At the Pingorsuit Glacier in North-West Greenland, an organic-rich deposit that had recently emerged from the retreating icecap was discovered at an elevation of 480 m above sea level.This paper reports on macrofossil analyses of a coarse detritus gyttja and peaty soil, which occurred beneath a thin cover of till and glacifluvial deposits. The sediments contained remains of vascular plants, mosses, beetles, caddisflies, midges, bryozoans, sponges and other invertebrates. The flora includes black spruce, tree birch, boreal shrubs and wetland and aquatic taxa, which shows that mires,lakes and ponds were present in the area.We describe an ewextinct water wort species Elatineodgaardii.The fossils were deposited in a boreal environment with a mean July air temperature that was at least 9°C higher than at present. The fossil assemblages show strong similarities with others from Greenland that have been assigned an Early Pleistocene age, and we suggest a similar age for the sediments found at the margin of the Pingorsuit Glacier. At the Pingorsuit Glacier in North-West Greenland, an organic-rich deposit was discovered at an elevation of 480 m above sea level. The sediments contained remains of vascular plants, mosses, beetles, caddisflies, midges, bryozoans,sponges and other invertebrates. The fossils were deposited in aboreal environment with a mean July air temperature that was at least 9°C higher than at present

Regional variability in peatland burning at mid- to high-latitudes during the Holocene

Acknowledgements This work developed from the PAGES (Past Global Changes) C-PEAT (Carbon in Peat on EArth through Time) working group. PAGES has been supported by the US National Science Foundation, Swiss National Science Foundation, Swiss Academy of Sciences and Chinese Academy of Sciences. We acknowledge the following financial support: UK Natural Environment Research Council Training Grants NE/L002574/1 (T.G.S.) and NE/S007458/1 (R.E.F.); Dutch Foundation for the Conservation of Irish Bogs, Quaternary Research Association and Leverhulme Trust RPG-2021-354 (G.T.S); the Academy of Finland (M.V); PAI/SIA 80002 and FONDECYT Iniciación 11220705 - ANID, Chile (C.A.M.); R20F0002 (PATSER) ANID Chile (R.D.M.); Swedish Strategic Research Area (SRA) MERGE (ModElling the Regional and Global Earth system) (M.J.G.); Polish National Science Centre Grant number NCN 2018/29/B/ST10/00120 (K.A.); Russian Science Foundation Grant No. 19-14-00102 (Y.A.M.); University of Latvia Grant No. AAp2016/B041/Zd2016/AZ03 and the Estonian Science Council grant PRG323 (TrackLag) (N.S. and A.M.); U.S. Geological Survey Land Change Science/Climate Research & Development Program (M.J., L.A., and D.W.); German Research Foundation (DFG), grant MA 8083/2-1 (P.M.) and grant BL 563/19-1 (K.H.K.); German Academic Exchange Service (DAAD), grant no. 57044554, Faculty of Geosciences, University of Münster, and Bavarian University Centre for Latin America (BAYLAT) (K.H.K). Records from the Global Charcoal Database supplemented this work and therefore we would like to thank the contributors and managers of this open-source resource. We also thank Annica Greisman, Jennifer Shiller, Fredrik Olsson and Simon van Bellen for contributing charcoal data to our analyses. Any use of trade, firm, or product name is for descriptive purposes only and does not imply endorsement by the U.S. Government.Peer reviewedPostprin

Fossil insect faunas from Late-glacial deposits in Scania (South-Sweden)

Palaeoentomological studies have been carried out on Late Weichselian deposits from three sites in Scania (S Sweden]. The preliminary results are presented. From the insect record it was possible to define five different faunal zones which cover the Late Weichselian' from the Billing so the beginning of the Preboreal Chronozones. A tentative climatic interpretation of results is proposed. The climatic model based on the palaeoentomological studies gives a picture rather different from the traditional South Scandinavian model based on palaeobotany. According to the palaeoentomological evidence a very sudden amelioration took place at around 12600 years BP. A gradual climatic deterioration is recorded from c. 12300 years BP and reached its maximum at c. 11300 years BP. It was followed by a period with arctic conditions. Around 10500 years BP a climatic amelioration is demonstrated ; temperate conditions were reached rather rapidly.Les résultats préliminaires d'une étude paléoentomologique des sédiments lacustres tardiglaciaires (Late Weichselian) de trois sites de Scanie (Skåne, Sud de la Suède) sont présentés. Grâce à la détermination des insectes fossiles, cinq zones "faunistiques" ont été décrites ; elles couvrent l'ensemble du Tardiglaciaire, de la chronozone Billing jusqu'au début de la chronozone Préboréal. Une première interprétation des résultats en termes climatiques est tentée. Le modèle climatique obtenu grâce aux études paléoentomologiques est assez différent du modèle classique proposé pour le Sud de la Suède et basé sur les résultats de la paléobotanique. D'après les informations données par la paléoentomologie, une amélioration climatique subite est datée d'environ 12 600 ans BP. Un refroidissement progressif du climat est démontré depuis environ 12 300 ans BP et atteint un maximum vers environ 11 300 ans BP. Cette évolution se poursuit par une période à caractère arctique. Vers 10 500 ans BP, la faune entomologique indique une nouvelle amélioration climatique conduisant assez rapidement à des conditions tempérées.Lemdahl Geoffrey. Fossil insect faunas from Late-glacial deposits in Scania (South-Sweden). In: Ecologia mediterranea, tome 11 n°1, 1985. Changements hydrologiques dans la zone tempérée au cours des quinze derniers millénaires / Paleohydrological changes in the temperate zone in the last 15000 years. Marseille (France) 3-5/07/1984. pp. 185-191