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  • Zeitschriften
  • Artikel  (72)
  • Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung  (26)
  • Deutsches GeoForschungsZentrum GFZ  (12)
  • Springer  (12)
  • MDPI  (9)
  • IUGG Secretariat, CIRES Cooperative Institute for Research in Environmental Sciences, University of Colorado
  • PERGAMON-ELSEVIER SCIENCE LTD
  • 2020-2024  (29)
  • 2015-2019  (32)
  • 2000-2004  (11)
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  • 1
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    IUGG Secretariat, CIRES Cooperative Institute for Research in Environmental Sciences, University of Colorado
    Publikationsdatum: 2020-02-12
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/other
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  • 2
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    IUGG Secretariat, CIRES Cooperative Institute for Research in Environmental Sciences, University of Colorado
    Publikationsdatum: 2020-02-12
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/other
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  • 3
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    IUGG Secretariat, CIRES Cooperative Institute for Research in Environmental Sciences, University of Colorado
    Publikationsdatum: 2020-02-12
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/other
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  • 4
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    IUGG Secretariat, CIRES Cooperative Institute for Research in Environmental Sciences, University of Colorado
    Publikationsdatum: 2020-02-12
    Sprache: Englisch
    Materialart: info:eu-repo/semantics/other
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  • 5
    Publikationsdatum: 2024-04-24
    Beschreibung: Groundwater is a vital resource for humans, non-human species, and ecosystems. It has allowed the development of human evolution and civilizations throughout history (e.g., Wittfogel 1956, Tempelhoff et al. 2009, Cuthbert and Ashley 2014, Roberts 2014). However, it faces multiple potential threats that make it vulnerable and fragile. Climate change and human activities are the primary causes that have led to water cycle disruptions, particularly a decline in groundwater quality and quantity (e.g., Gleeson et al. 2020, Chaminé et al. 2022, Richardson et al. 2023). Climate variability has induced droughts, floods, and other extreme weather conditions, significantly impacting groundwater in many regions. Meanwhile, human activities such as over-abstraction, ground contamination, deforestation, land-use change, and other anthropogenic pressures have further compromised groundwater status. Nonetheless, groundwater continues to fulfill water demands in many regions or during specific periods. Therefore, concerted efforts are imperative to ensure its sustainability. So, conservation practices and nature-based solutions must be adopted to efficiently manage groundwater and shield it from additional potential hazards or risks (e.g., contamination, pollution, or over-abstraction). Failure to act quickly can result in the loss of this critical resource, with severe consequences for the economy, society, and ecosystems. From this perspective, it is imperative to prioritize actions underscored by technical-scientific integrity, environmental responsibility, societal sensitivity, and ethical practices.
    Beschreibung: Published
    Beschreibung: 97
    Beschreibung: OS: Terza missione
    Beschreibung: OSA5: Energia e georisorse
    Beschreibung: JCR Journal
    Schlagwort(e): groundwater ; resource management ; sustainability ; hydrogeoethics ; geoethics ; societal well-being ; 05.03. Educational, History of Science, Public Issues ; 03.02. Hydrology ; 04.04. Geology ; 05.09. Miscellaneous
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: article
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  • 6
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    Springer
    In:  EPIC3Building Bridges at the Science-Stakeholder Interface, Building Bridges at the Science-Stakeholder Interface, Springer, 133 p., pp. 73-78, ISBN: 978-3-319-75919-7
    Publikationsdatum: 2019-08-15
    Repository-Name: EPIC Alfred Wegener Institut
    Materialart: Inbook , peerRev , info:eu-repo/semantics/other
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  • 7
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    PERGAMON-ELSEVIER SCIENCE LTD
    In:  EPIC3Deep-Sea Research Part II-Topical Studies in Oceanography, PERGAMON-ELSEVIER SCIENCE LTD, online, pp. 1-14, ISSN: 0967-0645
    Publikationsdatum: 2017-12-31
    Beschreibung: The snow crab Chionoecetes opilio and Arctic lyre crab Hyas coarctatus are prominent members of the Chukchi Sea epifaunal community. A better understanding of their life history will aid in determining their role in this ecosystem in light of the changing climate and resource development. In this study, the size frequency distribution, growth, and mortality of these two crab species was examined in 2009, 2010, 2012, and 2013 to determine temporal and spatial patterns within the eastern Chukchi Sea, and to identify potential environmental drivers of the observed patterns. Temporally, the mean size of both sexes of C. opilio and H. coarctatus decreased significantly from 2009 to 2013, with the number of rare maximum sized organisms decreasing significantly to near absence in the latter two study years. Spatially, the mean size of male and female crabs of both species showed a latitudinal trend, decreasing from south to north in the investigation area. Growth of both sexes of C. opilio and H. coarctatus was linear over the sampled size range, and mortality was highest in the latter two study years. Life history features of both species related to different environmental parameters in different years, ranging from temperature, the sediment carbon to nitrogen ratio of the organic content, and sediment grain size distribution. Likely explanations for the observed temporal and spatial variability are ontogenetic migrations of mature crabs to warmer areas possibly due to cooler water temperatures in the latter two study years, or interannual fluctuations, which have been reported for C. opilio populations in other areas where successful waves of recruitment were estimated to occur in eight year intervals. Further research is suggested to determine if the spatial and temporal patterns found in this study are part of the natural variability in this system or if they are an indication of long-term trends.
    Repository-Name: EPIC Alfred Wegener Institut
    Materialart: Article , isiRev
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  • 8
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    PERGAMON-ELSEVIER SCIENCE LTD
    In:  EPIC3Deep-Sea Research Part I-Oceanographic Research Papers, PERGAMON-ELSEVIER SCIENCE LTD, ISSN: 0967-0637
    Publikationsdatum: 2018-10-08
    Beschreibung: The manganese nodule belt within the Clarion and Clipperton Fracture Zones (CCZ) in the abyssal NE Pacific Ocean is characterized by numerous seamounts, low organic matter (OM) depositional fluxes and meter-scale oxygen penetration depths (OPD) into the sediment. The region hosts contract areas for the exploration of polymetallic nodules and Areas of Particular Environmental Interest (APEI) as protected areas. In order to assess the impact of potential mining on these deep-sea sediments and ecosystems, a thorough determination of the natural spatial variability of depositional and geochemical conditions as well as biogeochemical processes and element fluxes in the different exploration areas is required. Here, we present a comparative study on (1) sedimentation rates and bioturbation depths, (2) redox zonation of the sediments and element fluxes as well as (3) rates and pathways of biogeochemical reactions at six sites in the eastern CCZ. The sites are located in four European contract areas and in the APEI3. Our results demonstrate that the natural spatial variability of depositional and (bio)geochemical conditions in this deep-sea sedimentary environment is much larger than previously thought. We found that the OPD varies between 1 and 4.5 m, while the sediments at two sites are oxic throughout the sampled interval (7.5 m depth). Below the OPD, manganese and nitrate reduction occur concurrently in the suboxic zone with pore-water Mn2+ concentrations of up to 25 µM. The thickness of the suboxic zone extends over depth intervals of less than 3 m to more than 8 m. Our data and the applied transport-reaction model suggest that the extension of the oxic and suboxic zones is ultimately determined by the (1) low flux of particulate organic carbon (POC) of 1–2 mg Corg m−2 d−1 to the seafloor, (2) low sedimentation rates between 0.2 and 1.15 cm kyr−1 and (3) oxidation of pore-water Mn2+ at depth. The diagenetic model reveals that aerobic respiration is the main biogeochemical process driving OM degradation. Due to very low POC fluxes of 1 mg m−2 d−1 to the seafloor at the site investigated in the protected APEI3 area, respiration rates are twofold lower than at the other study sites. Thus, the APEI3 site does not represent the (bio)geochemical conditions that prevail in the other investigated sites located in the European contract areas. Lateral variations in surface water productivity are generally reflected in the POC fluxes to the seafloor across the various areas but deviate from this trend at two of the study sites. We suggest that the observed spatial variations in depositional and (bio)geochemical conditions result from differences in the degree of degradation of OM in the water column and heterogeneous sedimentation patterns caused by the interaction of bottom water currents with seafloor topography.
    Repository-Name: EPIC Alfred Wegener Institut
    Materialart: Article , isiRev
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  • 9
    Publikationsdatum: 2024-03-20
    Beschreibung: In a volcanic crisis, authorized decision-makers must balance the social and economic costs of mitigating actions, such as evacuation, against the potential human losses if such actions are insufficient. In making their decisions, advice is needed from volcanologists on the eruption probability. Therefore, there should be a clear separation in the roles of volcanologists and decision-makers; the volcanologists should advise on the volcano hazard and alternative potential scenarios but refrain from involvement in making decisions. Currently, volcanologists are responsible for setting volcano alert levels. Given the small handful of distinct alert levels, there is inherent ambiguity and substantial uncertainty in the interpretation of individual levels. Furthermore, changing an alert level may automatically trigger actions by decision-makers. This would violate the principle of separation of responsibility and may result in unwelcome pressure being applied to volcanologists. Just as physicians can invoke medical ethics in resisting pressure to alter their advice, so volcanologists can invoke geoethics. Freedom to abide by their scientific beliefs is a basic tenet of geoethics.
    Beschreibung: Published
    Beschreibung: 19-23
    Beschreibung: Terceira Island, Azores (Portugal)
    Beschreibung: 4SR TERREMOTI - Preparazione alla comunicazione in emergenza
    Beschreibung: 6SR VULCANI – Servizi e ricerca per la società
    Beschreibung: 1TM. Formazione
    Beschreibung: 3TM. Comunicazione
    Schlagwort(e): volcano ; crisis ; evacuation ; geoethics ; responsibility ; 05.03. Educational, History of Science, Public Issues ; 05.09. Miscellaneous ; 04.08. Volcanology
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: book chapter
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  • 10
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    PERGAMON-ELSEVIER SCIENCE LTD
    In:  EPIC3Progress In Oceanography, PERGAMON-ELSEVIER SCIENCE LTD, 164, pp. 37-51, ISSN: 0079-6611
    Publikationsdatum: 2019-06-01
    Beschreibung: The initial, anthropocentric view of the deep ocean was that of a hostile environment inhabited by organisms rendered lethargic by constant high pressure, low temperature and sparse food supply, hence evolving slowly. This conceptual framework of a spatially and temporally homogeneous, connected, strongly bottom-up controlled habitat implied a strong constraint on, or poor incentive for, speciation. Hence, the discovery in the late 1960s of high species diversity of abyssal benthic invertebrates came as a surprise. Since then, the slow-motion view of deep-sea ecology and evolution has speeded up and diversified in the light of increasing evidence accumulating from in situ visual observations complemented by molecular and other tools. The emerging picture is that of a much livelier, highly diversified and more complex deep-sea fauna than previously assumed. In this review we examine the consequences of the incoming information for developing a broader view of evolutionary ecology in the deep sea, and for scavenging amphipods in particular. We revisit the food supply to the deep-sea floor and hypothesize that the dead bodies of animals, ranging from zooplankton to large fish are likely to be a more important source of food than their friable faeces. Camera observations of baited traps indicate that amphipod carrion-feeders arrive within hours at the bait which continues to draw new individuals for days to months later, presumably by scent trails in tidal currents. We explore the different stages of food acquisition upon which natural selection may have acted, from detection to ingestion, and discuss the possibility of a broader range of food acquisition strategies, including predation and specializations. Although currently neglected in deep-sea ecology, top-down factors are likely to play a more important role in the evolution of deep-sea organisms. Predation on amphipods at baits by bathyal and abyssal fishes, and large predatory crustaceans in the hadal zone, is often observed. Finally, we develop hypotheses regarding the effects of past, present and imminent anthropogenic activities on scavenger biomass and how these can be tested with the most modern tools.
    Repository-Name: EPIC Alfred Wegener Institut
    Materialart: Article , isiRev
    Format: application/pdf
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