Auflistung Paläontologie, Geobiologie nach Titel
Anzeige der Dokumente 276-295 von 380
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Quantifying the impact of chemicals on stable carbon and oxygen isotope values of raw pollen
; Hennig, Julian; Riedel, Frank; Helle, Gerhard (Journal of Quaternary Science, 2021-03-23)
Purification protocols to extract pollen from lake sediments contain chemicals that alter the carbon and oxygen pollen‐isotope values according to pollen characteristics and family affiliation. Modern (raw) pollen of ... -
Quantitative critique of leaf‐based paleo‐CO2 proxies: Consequences for their reliability and applicability
; Royer, Dana L.; Franks, Peter J.; Roth‐Nebelsick, Anita (Geological Journal, 2020-03-18)
A variety of proxies have been developed to reconstruct paleo‐CO2 from fossil leaves. These proxies rely on some combination of stomatal morphology, leaf δ13C, and leaf gas exchange. A common conceptual framework for ... -
Quantitative estimation of aerobic diagenetic overprint of palaeoproductivity signals
(Univ. Bremen, 2008)Organic-walled dinoflagellate cysts, oxidation, degradation, organic matter. - Species-selective aerobic decomposition affects fossil organic-walled dinoflagellate cyst (dinocyst) records and hence dinocyst-based interpretations ... -
Reconstructing the Paleo‐Ecological Diet of Snow Petrels (Pagodroma nivea) From Modern Samples and Fossil Deposits: Implications for Southern Ocean Paleoenvironmental Reconstructions
; ; ; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Biogeosciences, 2023-04-19)
Abstract Snow petrels (
Pagodroma nivea ), which are endemic to the Antarctic ... -
Remarkably high and consistent tolerance of a Red Sea coral to acute and chronic thermal stress exposures
; Fine, Maoz; Perna, Gabriela; ; Barshis, Daniel J. (Limnology and Oceanography, 2021-02-15)
Global warming is resulting in unprecedented levels of coral mortality due to mass bleaching events and, more recently, marine heatwaves, where rapid increases in seawater temperature cause mortality within days. Here, we ... -
Renewed study of the type material of Palaeospongilla chubutensis Ott and Volkheimer (1972)
Volkmer-Ribeiro, C.; (Fossil and recent spongesFossil and recent sponges, 1991)
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Renewed study of the type material of Palaeospongilla chubutensis Ott and Volkheimer (1972)
Volkmer-Ribeiro, C.; (Fossil and recent sponges, 1991)
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Response of large benthic foraminifera to climate and local changes: Implications for future carbonate production
; Reymond, Claire E.; ; Doo, Steve; Schmidt, Christiane; ; Westphal, Hildegard (Sedimentology, 2021-05-18)
Large benthic foraminifera are major carbonate components in tropical carbonate platforms, important carbonate producers, stratigraphic tools and powerful bioindicators (proxies) of environmental change. The application ... -
Reversals in Temperature‐Precipitation Correlations in the Northern Hemisphere Extratropics During the Holocene
; ; ; ; ; ; ; (Geophysical Research Letters, 2022-11-11)
Future precipitation levels remain uncertain because climate models have struggled to reproduce observed variations in temperature‐precipitation correlations. Our analyses of Holocene proxy‐based temperature‐precipitation ... -
Review of Devonian-Carboniferous Boundary sections in the Rhenish Slate Mountains (Germany)
; ; (Palaeobiodiversity and Palaeoenvironments, 2021-03-25)
Thirty Devonian-Carboniferous Boundary sections of the Rhenish Slate Mountains and adjacent subsurface areas are reviewed with respect to litho-, event, conodont, ammonoid, sequence, and chemostratigraphy. In the interval ... -
Revisiting global trends in freshwater insect biodiversity: A reply
; ; ; (Wiley Interdisciplinary Reviews: Water, 2020-12-31)
Jähnig et al. make some useful points regarding the conclusions that can be drawn from our meta‐analysis; however, some issues require clarification. First, we never suggested that there was a globally increasing trend of ... -
Revisiting Global Vegetation Controls Using Multi‐Layer Soil Moisture
; ; ; ; ; (Geophysical Research Letters, 2021-06-07)
The productivity of terrestrial vegetation is determined by multiple land surface and atmospheric drivers. Water availability is critical for vegetation productivity, but the role of vertical variability of soil moisture ... -
Rhizobien in der Pflanzenmikrobiota
(Biologie in unserer Zeit, 2019)Für das Wachstum und Überleben der Pflanze im Boden ist ihre Mikrobiota von maßgeblicher Bedeutung. Pflanzen-Mikrobiota-Interaktionen können unter Laborbedingungen durch definierte Gemeinschaften von Kommensalen nachgestellt ... -
Role of trait combinations, habitat matrix, and network topology in metapopulation recovery from regional extinction
; ; (Limnology and Oceanography, 2019)
We studied the role of oceanographic conditions and life history strategies on recovery after extinction in a metapopulation of marine organisms dispersing as pelagic larvae. We combined an age-structured model with scenarios ... -
Salinity effects on cultured Neogloboquadrina pachyderma (sinistral) from high latitudes: new paleoenvironmental insights
; ; ; ; (Geo-Marine Letters, 2021-01-05)
This study presents culture experiments of the cold water species Neogloboquadrina pachyderma (sinistral) and provides new insights into the incorporation of elements in foraminiferal calcite of common and newly established ... -
Scheinbare Großkolonien von Graptolithen
(Beiträge zur Geologie von Thüringen, 1944)Der Beitrag liefert eine Betrachtung von 3 verschiedenen Graptolithenfunden. -
Scotiadiscus nom. nov., a replacement name for Actinodiscus SMITH & PAUL, 1982 (Cyclocystoidea), preoccupied by Actinodiscus DE BLAINVILLE, 1830 (Anthozoa)
; Smith, Andrew B. (Paläontologische Zeitschrift, 2008)
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Sea shell diversity and rapidly evolving secretomes: insights into the evolution of biomineralization.
(Frontiers in zoology, 2016)An external skeleton is an essential part of the body plan of many animals and is thought to be one of the key factors that enabled the great expansion in animal diversity and disparity during the Cambrian explosion. ... -
Seasonal dynamics and characterization of coccolithophore export production in two major upwelling regions - Cape Blanc (NW-Africa) & Chile (30 °S)
(Univ. Bremen, 2008)Coccolithophores, a major group of the nanophytoplankton, belong to the class Prymnesiophyceae.The cells of coccolithophores are typically surrounded by layer(s) of calcium carbonate plates, the coccoliths. Certain ...
