A5088840784- Paleontology and Stratigraphy of Fossils
- Marine Biology and Ecology Research
- Geology and Paleoclimatology Research
- Evolution and Paleontology Studies
- Paleontology and Evolutionary Biology
- Ocean Acidification Effects and Responses
- Isotope Analysis in Ecology
- Geological formations and processes
- Coral and Marine Ecosystems Studies
- Geological and Geochemical Analysis
- Marine Bivalve and Aquaculture Studies
- Geochemistry and Elemental Analysis
- Marine and environmental studies
- Marine and fisheries research
- Cephalopods and Marine Biology
- Mollusks and Parasites Studies
- Hydrocarbon exploration and reservoir analysis
- Space Exploration and Technology
- Physiological and biochemical adaptations
- Geological and Geophysical Studies
- Ichthyology and Marine Biology
- Sustainable Development and Environmental Policy
- Fossil Insects in Amber
- Environmental Conservation and Management
- Environmental and Cultural Studies in Latin America and Beyond
Museum für Naturkunde
2016-2025
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2024
Potsdam Institute for Climate Impact Research
2024
University of Bayreuth
2024
Weatherford College
2024
University of Exeter
2024
Institute for Biodiversity
2021
Friedrich-Alexander-Universität Erlangen-Nürnberg
2008-2016
University of California, Berkeley
2015-2016
Stanford University
2015-2016
It has previously been thought that there was a steep Cretaceous and Cenozoic radiation of marine invertebrates. This pattern can be replicated with new data set fossil occurrences representing 3.5 million specimens, but only when older analytical protocols are used. Moreover, analyses employ sampling standardization more robust counting methods show modest rise in diversity no clear trend after the mid-Cretaceous. Globally, locally, at both high low latitudes, less than twice as Neogene...
Summary Priority question exercises are becoming an increasingly common tool to frame future agendas in conservation and ecological science. They effective way identify research foci that advance the field also have high policy relevance. To date, there has been no coherent synthesis of key questions priority areas for palaeoecology, which combines biological, geochemical molecular techniques order reconstruct past environmental systems on time‐scales from decades millions years. We adapted...
Abstract Anthropogenic global warming is redistributing marine life and may threaten tropical benthic invertebrates with several potential extinction mechanisms. The net impact of climate change on geographical risk nevertheless remains uncertain. Evidence widespread climate‐driven extinctions potentially unidentified mechanisms exists in the fossil record. We quantify organism across thermal habitats, estimated by paleoclimate reconstructions, over past 300 million years. Extinction...
Time‐averaging caused by sedimentological, biological, or digenetic factors is widespread in marine environments. It can be recognized using stratigraphic, ecological, taphonomic, sedimcntologic criteria. Community parameters such as diversity, relative abundance of species, taxonomic and, to a lesser extent, trophic and life habit composition may seriously differ between thanatocoenosis (death assemblage) time‐averaged taphocoenosis, depending on the degree community stability....
Many aspects of the supposed hyperthermal Toarcian Oceanic Anoxic Event (T-OAE, Early Jurassic, c. 182 Ma) are well understood but a lack robust palaeotemperature data severely limits reconstruction processes that drove T-OAE and associated environmental biotic changes. New oxygen isotope from calcite shells benthic fauna suggest bottom water temperatures in western Tethys were elevated by 3.5 °C through entire T-OAE. Modelling supports idea widespread marine anoxia was induced...
Abstract Aim To evaluate the influence of geographical distribution on extinction risk benthic marine invertebrates using data from fossil record, both during times background and across a mass‐extinction episode. Total range is contrasted with proxies global abundance to assess relationships between two essential components risk. Location A occurrence base macro‐organisms Triassic Jurassic periods was used for this study. Methods Geographical distributions biodiversity dynamics were...
Evaluating the relative importance of biotic versus abiotic factors in governing macroevolutionary patterns is a central question paleobiology.Here, we analyzed changes global abundances and diversity ecological groups to infer role biological interactions as driving evolutionary forces mid-Mesozoic macrobenthic marine ecosystems.Specifically, tested hypothesis escalation, which states that were controlled by an increasing pressure exerted enemies on their victims.Associated with evidence...
Ecological interactions, such as predation and bioturbation, are thought to be fundamental determinants of macroevolutionary trends. A data set containing global occurrences Phanerozoic fossils benthic marine invertebrates shows escalatory trends in the relative frequency ecological groups, carnivores noncarnivorous infaunal or mobile organisms. Associations between these either statistically insignificant interpretable preservational effects. Thus, there is no evidence that escalation...
Abstract Ecology is thought to be of crucial importance in determining taxonomic turnover at geological time scales, yet general links between ecology and biodiversity dynamics are still poorly explored deep time. Here we analyze the relationships environmental affinities Triassic–Jurassic marine benthic genera their dynamics, using a large, taxonomically vetted data set occurrences. On basis binomial probabilities proportional occurrence counts, identify for (1) carbonate versus...
Contemporary biodiversity loss and population declines threaten to push the biosphere toward a tipping point with irreversible effects on ecosystem composition function. As potential example of global-scale regime shift in geological past, we assessed ecological changes across end-Cretaceous mass extinction based molluscan assemblages at four well-studied sites. By contrasting preextinction postextinction rank abundance numerical 19 modes life--each defined as unique combination mobility...
Abstract A mismatch of species’ thermal preferences to their environment may indicate how they will respond future climate change. Averaging this across species forewarn that some assemblages undergo greater reorganization, extirpation, and possibly extinction, than others. Here, we examine regional warming determines occupancy assemblage composition marine bivalves, brachiopods, gastropods over one-million-year time steps during the Early Jurassic. Thermal bias, difference between modelled...
Research Article| December 01, 2003 Selective extinction among Early Jurassic bivalves: A consequence of anoxia Martin Aberhan; Aberhan 1Museum für Naturkunde, Institut Paläontologie, Invalidenstrasse 43, D-10115 Berlin, Germany Search for other works by this author on: GSW Google Scholar Tomasz K. Baumiller 2Instytut Paleobiologii, Polish Academy Sciences, Twarda 51/55, 00-818 Warsaw, Poland, and Museum Paleontology, University Michigan, Ann Arbor, Michigan 48109, USA Geology (2003) 31...
Biological veracity of the sharp diversity increase observed in many analyses post-Paleozoic marine fossil record has been debated vigorously recent years. To assess this question for sample-level (“alpha”) diversity, we used bulk samples shelly invertebrates, representing three major groups (brachiopods, bivalves, and gastropods), to compare Jurassic late Cenozoic benthos. After restricting data set single-bed, whole-fauna, ( n ≥ 30 specimens) from comparable open siliciclastic facies, were...
<strong class="journal-contentHeaderColor">Abstract.</strong> The Late Jurassic to Early Cretaceous Tendaguru Beds (Tanzania, East Africa) have been well known for nearly a century their diverse dinosaur assemblages. Here, we present sedimentological and palaeontological data collected by the German-Tanzanian Expedition 2000 in an attempt reconstruct palaeo-ecosystems of at type locality. Our reconstructions are based on palaeoecological analysis macroinvertebrates, microvertebrates, plant...
Abstract The Toarcian Oceanic Anoxic Event (TOAE, Early Jurassic, ~182 Ma ago) was characterised by severe environmental perturbations which led to habitat degradation and extinction of marine species. Warming-induced anoxia is usually identified as main driver, but because life also affected in oxygenated environments the role raised temperature its effects on need be addressed. Body size a fundamental characteristic organisms expected decrease response heat stress. We present quantitative...