Remains of mosses and freshwater animals in some Holocene lake and bog sediments from Greenland

by Kap Farvel ekspeditionen 1970.

Publisher: C. A. Reitzel in København

Written in English
Published: Pages: 44 Downloads: 499
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Places:

  • Greenland.
  • Subjects:

    • Freshwater invertebrates -- Greenland.,
    • Mosses -- Greenland.
    • Edition Notes

      StatementKap Farvel Ekspeditionen 1970 ; by Bent Fredskild, Niels Jacobsen and Ulrik Røen.
      SeriesMeddelelser om Grønland ; bd. 198, nr. 5, Meddelelser om Grønland ;, bd. 198, nr. 5.
      ContributionsFredskild, Bent., Jacobsen, Niels, 1945-, Røen, Ulrik.
      Classifications
      LC ClassificationsQ115 .D39 bd. 198, nr. 5, QL105 .D39 bd. 198, nr. 5
      The Physical Object
      Pagination44 p. :
      Number of Pages44
      ID Numbers
      Open LibraryOL4947838M
      ISBN 108742101077
      LC Control Number76375735

  The lake sediments of Hässeldala Port in south-east Sweden provide an archive of local and regional environmental conditions ~– ka BP (thousand years before present) and allow testing DNA sequencing techniques to reconstruct past vegetation changes. We combined shotgun sequencing with plant micro- and macrofossil analyses to investigate sediments dating to the Allerød . Younger Dryas: | | ||| | Three temperature |proxies| showing the Younger Dryas World Heritage Encyclopedia, the aggregation of the largest online encyclopedias.   2. Regional setting. The Inn valley is one of the largest valleys in the Alps, characterised by overdeepening due to repeated Pleistocene glaciations, e.g. at Kramsach, (40 km northeast of Innsbruck), where a drill hole reached the base of the Quaternary sediment fill m below today's valley floor level (Preusser et al., ).Surrounded by mountains with altitudes of up to m a.s.l. Analyses of early and mid‐Holocene raised bog deposits from Britain and Ireland show at least two distinctive pathways across the fen–bog transition. At Abbeyknockmoy Bog, near Galway in Ireland, the first oligotrophic community began forming over fen peat at cal. BP, in wet lawn and mud bottom conditions (Hughes ).

The geochemical diagram for the early and mid Holocene part of the Nagymohos profile indicates high Al and K frequencies in the early Holocene with a sharp decline at cm (c. cal. bc), just before lake mud is replaced by reedswamp and fen peat, followed by . AbstractTwo sections of sediment from small oxbow-lake infillings located in. Higher points and the ridges between streams were still covered in drift, but clay was exposed on the valley sides. The swollen rivers oozed through a morass of silt. Vegetation returned, followed by animals and, some 10 years ago, by human beings. They found plateaux and ridges dry and firm, patchily wooded, with heath on the stoniest areas.   The remains of a young man found in a Laois bog in Ireland have been dated back 4, years, making it the world’s oldest ‘bog body’ ever recovered in the world. The chemical composition of bogs can preserve human bodies for thousands of years.

Lake sediments vary spatially in their composition, so one part of a lake may have marl, while another may not. Koschel et al. for example, looked at sediments in some German planktonic marl lakes and found that the CaCO 3 content varied from 20 % to 60 % dry wt. A change in the definition of the calcium carbonate content to > 50 % would ensure.   The storyline states Mastodons met their ma to 11, years ago. Mastodons are any species of extinct proboscideans in the genus Mammut (family Mammutidae), distantly related to elephants, that inhabited North and Central America during the late Miocene or late Pliocene up to their extinction at the end of the Pleistoc to 11, Climate Change and Cultural Dynamics explores the cause and effect relationship between climatic change and cultural transformations across the mid-Holocene (c. B.C.).* Explores the role of climatic change on the development of society around the world* Chapters detail diverse geographical regions* Co-written by noted archaeologists and. The word "estuary" is derived from the Latin word aestuarium meaning tidal inlet of the sea, which in itself is derived from the term aestus, meaning have been many definitions proposed to describe an estuary. The most widely accepted definition is: "a semi-enclosed coastal body of water, which has a free connection with the open sea, and within which seawater is measurably diluted.

Remains of mosses and freshwater animals in some Holocene lake and bog sediments from Greenland by Kap Farvel ekspeditionen 1970. Download PDF EPUB FB2

Get this from a library. Remains of mosses and freshwater animals in some Holocene lake and bog sediments from Greenland. [Bent Fredskild; Niels Jacobsen. ¨ cher et al. Holocene insect remains from Greenland. and freshwater animals in some Holocene lake and bog sediments.

The pioneer vegetation around the lake was dominated by mosses and. During the Holocene most West Greenland lakes passed from an early eutrophic stage, rich in both flora and fauna, through a mesotrophic to an oligotrophic stage with very low productivity.

Remains of mosses and freshwater animals in some holocene lake and bog sediments from Greenland. Meddel. Grønland 1– Google Scholar;Cited by: During the Holocene most West Greenland lakes passed from an early eutrophic stage, Remains of mosses and freshwater animals in some holocene lake and bog sediments from Greenland.

Meddel. Grønland 1– Google by:   Palaeoecological studies of lake sediments in west Greenland were pioneered by Iversen (), and followed by Fredskild,Fredskild,Fredskild, b, Böcher and Fredskild (), Bennike ()and Eisner et al.

().Studies of Holocene diatom floras have been reported by Foged,Foged,Foged, A review of the Holocene development in Greenland is Cited by:   On the occurrence of lignin or polyphenols in some mosses and liverworts.

Phytochemistry, Remains of mosses and freshwater animals in some Holocene lake and bog sediments from Greenland. Meddelelser om Grenland. Lake Pilvelis is a small overgrowing lake of a glacial origin at the elevation m asl., situated in the western part of Raznavas Hilly Area, northwest Latgale Upland, in the Eastern part of area of the lake is ha.

The average water depth is m, and maximum m. There are no inflow–outflow streams in the lake. Some of the caves of Europe had mammoth remains mixed with other animals including ground sloth, rhinoceros, horse, camel.

bison, antelope and tapir (E,F2). Large quantities of bones and skulls of horses, buffaloes, oxen and sheep are found in some areas of the tundra indicating that there were large herds of these animals as well (F1,G).

The remains or impressions of plants, animals, and humans preserved in sedimentary rock. Paleontology. The study of fossils formed when animals or plants are buried rapidly by water and sediments. Mold fossil. Forms when mud buries a plant or animal and quickly hardens into rock Darwin's second book which proposed that mankind evolved.

occur when animal tracks, leaf and feather outlines, or imprints of skin were preserved in mud that quickly hardened and then was buried by more sediments resin fossils form when plant parts, insects, frogs, lizards, or other small animals are trapped in large masses of tree sap, which later hardens into a rocklike substance called amber.

Remains of mosses and freshwater animals in some Holocene lake and bog sediments from Greenland. Meddelelser om Grønland (5). C.A. Reitzel. Copenhagen, [Google Scholar] Funder S. Ice-age plant refugia in east Greenland. Palaeogeography, Palaeoclimatology, Palaeoecology.

; – /polar.v31i Moss remains in a sediment sample from Narsaarsuk near the Thule Air Base, NW Greenland (76° 27′ N, 69° 35′ W), were identified to obtain insights into vegetation and environmental. Holocene freshwater diatoms: palaeoenvironmental implications from south Kamchatka, Russia. Boreas, Vol.

43, Issue. 1, p. The ionic composition of some bog and fen waters in the English Lake District. Journal of Ecology, 44, – Gorham, Diatom assemblages in sediments of Lake Juusa, southern Estonia with an assessment of their. Two extensive peat deposits on Nordvestø, between Greenland and Canada, were examined for macroscopic remains of plants and animals.

One of the peat deposits accumulated during the period from c. 7, to 5, cal. years BP. This peat is guanogenic and completely dominated by the coprophilous bryophyte Aplodon wormskioldii, and also contains frequent remains of feathers. The. Wood from the top of an unexcavated island of sediment located above the mastodon remains was Holocene ( ± 50 yr B.P.; Menking et al., ), indicating that some Holocene sediment may have been present in the basin prior to the two episodes of pond excavation.

But because the basin is shallow and most of the sediment filling is late. Some chemical observations on post-glacial lake sediments. Stable carb~n- and hydrogen-isotope ratios of subfossil oaks in southern Germany: methodology and applIcatIon to a composite record for the Holocene.

The origins of the freshwater fauna that inhabits Antarctic lakes are poorly known. The species present today could be relict species that have survived Quaternary glaciations on the continent, or Holocene migrants from more temperate regions.

One approach to investigating these questions is to study faunal microfossils in lake sediment. Record of volcanism since B.C. from the GISP2 Greenland ice core and implications for the volcano-climate system.

Records of a lake's life in time: the sediments. Records of vegetation in time and space: the principles of pollen analysis. Recruitment of pollen to the seston and sediment of some Lake District.

Hence, moss–animals. No chlorophyll required. In some bryozoans, individual animals specialize their function for feeding, defense (some bryozoans can even “walk” along on their little. determine why some organisms became extinct ____ Groups of fossil plants and animals succeed each other in a definite and determinable order, and any period of geologic time can be recognized by its respective fossils.

This is a statement of the ____. law of. The Sirok Nyírjes-tó peat bog provides an almost full Holocene climatic record reconstructed by bog surface wetness investigations based on plant macrofossil analysis. We compared our macrofossil data to anthracological material derived from archaeological sites and to the newest bioclimatological models of the Carpathian basin.

On the basis of environmental historical and climatic data we. Studies of plant and animal macrofossils have been carried out on early-Holocene lake marls from the southwestern Baltic.

The records have been dated to the interval from c. to 14 C years BP by correlating pollen assemblages to an onshore radiocarbon dated pollen diagram.

The sediments contain from 5 to 81% carbonate, and only few macroscopic remains of wetland and terrestrial taxa. Abstract. The freshwater ostracod Tonnacypris glacialis (Sars, ) is reported from the European Pleistocene for the first time. The historical allocation of the species is discussed, and the species composition and characteristics of Tonnacypris Diebel & Pietrzeniuk () and its phylozoogeography are considered.

The significance of T. glacialis is reviewed, particularly from the viewpoint. Frey D.G. Remains of animals in Quaternary lake and bog sediments and their interpretation.

Archiv für Hydrobiologie, Ergebnisse der Limnologie 2, 1– Frey D.G. Cladocera analysis. In Berglund B.E. (eds.) Hand-book of Holocene Palaeoecology and Palaeohydrology, – John Wiley and Sons, New York.

Frey D.G. δ 13 C values for freshwater aquatic plant matter varies from −11 to −50‰ and is not a clear indicator of photosynthetic pathway as in terrestrial plants. Several factors affect δ 13 C of aquatic plant matter.

These include: (1) The δ 13 C signature of the source carbon has been observed to range from +1‰ for HCO 3 − derived from limestone to −30‰ for CO 2 derived from. Some mosses are able to take up nutrients from water flowing over them, thus they have very effective absorptive surfaces.

Other mosses, such as Polytrichum, sequester nutrients directly from the soil or substrate on which they are growing and transfer the nutrients to their growing tips. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

Lake sediments accumulate material from the entire catchment and thus can be understood as a record of OM and many major and trace elements, including Hg [7,8]. Because new material is deposited on top of older deposits, these sediments are also natural archives for temporal changes in trace element loadings [9,10,11].

In hunters' Stone Age, occurred the hottest time throughout the Holocene, which is called the Holocene Optimum, and lasted almost until the Neolithic period about 4, years before present, then the temperature continued to drop through bronze- iron-age and historical times until it reached a low point in the Little Ice Age in 's.

We studied twelve late Holocene organic deposits in West-Frisia, The Netherlands. Pollen, spores, non-pollen palynomorphs, mosses, other botanical macrofossils and insect remains were recorded for reconstructions of changing environmental conditions. Eastern West-Frisia was a cultivated landscape during the Bronze Age, but it became a freshwater wetland in the Late Bronze Age.

At some point between the depths of and cm, a prominent marginal fen mat was initiated, marking the beginning of Stage II. The fen phase (Stage II) was characterized by abundant remains of the moss Drepanocladus aduncus at approximately radiocarbon ([]) y BP.Field techniques.

The Lake Turangmoroke record is composed from two cores. A m core (LTC1) was recovered from the near-centre of the lake using the percussion coring method outlined in Cook and a m core (LTC2) taken near the western shore of the basin using a PVC pipe-in-pipe technique after that of Tratt and Burne (), to attain and integrate data on local shore conditions into.

The mid-Holocene Thermal Maximum was associated with relatively open summer waters in Baffin Bay, as evidenced by driftwood delivery to ancient beaches (Dyke et al., ) and diatom microfossils in marine sediments (Levac et al., ), which also suggest a larger and longer-lasting ice-free polynya than currently.