Now showing items 1-20 of 370

  • 150,000-year palaeoclimate record from northern Ethiopia supports early, multiple dispersals of modern humans from Africa 

    Lamb, Henry; Bates, C. Richard; Bryant, Charlotte; Davies, Sarah; Huws, Dei; Marshall, Michael; Roberts, Helen (2018-01-18) - Journal article
    Climatic change is widely acknowledged to have played a role in the dispersal of modern humans out of Africa, but the timing is contentious. Genetic evidence links dispersal to climatic change ~60,000 years ago, despite ...
  • The ACER pollen and charcoal database : a global resource to document vegetation and fire response to abrupt climate changes during the last glacial period 

    Sánchez Goñi, M. F.; Desprat, S.; Daniau, A.-L.; Bassinot, F. C.; Polanco-Martínez, J. M.; Harrison, S. P.; Allen, J. R. M.; Anderson, R. S.; Behling, H.; Bonnefille, R.; Burjachs, F.; Carrión, J. S.; Cheddadi, R.; Clark, J. S.; Combourieu-Nebout, N.; Courtney Mustaphi, Colin J.; Debusk, G. H.; Dupont, L. M.; Finch, J. M.; Fletcher, W. J.; Giardini, M.; González, C.; Gosling, W. D.; Grigg, L. D.; Grimm, E. C.; Hayashi, R.; Helmens, K.; Heusser, L. E.; Hill, T.; Hope, G.; Huntley, B.; Igarashi, Y.; Irino, T.; Jacobs, B.; Jiménez-Moreno, G.; Kawai, S.; Kershaw, A. P.; Kumon, F.; Lawson, I. T.; Ledru, M.-P.; Lézine, A.-M.; Liew, P. M.; Magri, D.; Marchant, R.; Margari, V.; Mayle, F. E.; McKenzie, G. M.; Moss, P.; Müller, S.; Müller, U. C.; Naughton, F.; Newnham, R. M.; Oba, T.; Pérez-Obiol, R.; Pini, R.; Ravazzi, C.; Roucoux, K. H.; Rucina, S. M.; Scott, L.; Takahara, H.; Tzedakis, P. C.; Urrego, D. H.; van Geel, B.; Valencia, B. G.; Vandergoes, M. J.; Vincens, A.; Whitlock, C. L.; Willard, D. A.; Yamamoto, M. (2017-09-11) - Journal article
    Quaternary records provide an opportunity to examine the nature of the vegetation and fire responses to rapid past climate changes comparable in velocity and magnitude to those expected in the 21st-century. The best ...
  • Anatomy of terminal moraine segments and implied lake stability on Ngozumpa Glacier, Nepal, from electrical resistivity tomography (ERT) 

    Thompson, Sarah S.; Kulessa, Bernd; Benn, Douglas I.; Mertes, Jordan R. (2017-04-20) - Journal article
    Moraine-dammed lakes at debris-covered glaciers are becoming increasingly common and pose significant outburst flood hazards if the dam is breached. While moraine subsurface structure and internal processes are likely to ...
  • Andean grasslands are as productive as tropical cloud forests 

    Oliveras, I.; Girardin, C.; Doughty, C. E.; Cahuana, N.; Arenas, C. E.; Oliver, V.; Huasco, W. Huaraca; Malhi, Y. (2014-11) - Journal article
    We aim to assess net primary productivity (NPP) and carbon cycling in Andean tropical alpine grasslands (puna) and compare it with NPP of tropical montane cloud forests. We ask the following questions: (1) how do NPP and ...
  • Another continental vulture crisis : Africa’s vultures collapsing toward extinction 

    Ogada, Darcy; Shaw, Philip; Beyers, Rene L; Buij, Ralph; Murn, Campbell; Thiollay, Jean Marc; Beale, Colin M; Holdo, Ricardo M; Pomeroy, Derek; Baker, Neil; Krüger, Sonja C; Botha, Andre; Virani, Munir Z; Monadjem, Ara; Sinclair, Anthony R E (2016-04-26) - Journal article
    Vultures provide critical ecosystem services, yet populations of many species have collapsed worldwide. We present the first estimates of a 30-year Pan- African vulture decline, confirming that declines have occurred on a ...
  • Anoxic atmospheres on Mars driven by volcanism : implications for past environments and life 

    Sholes, Steven F.; Smith, Megan L.; Claire, Mark W.; Zahnle, Kevin J.; Catling, David C. (2017-07-01) - Journal article
    Mars today has no active volcanism and its atmosphere is oxidizing, dominated by the photochemistry of CO2 and H2O. Mars experienced widespread volcanism in the past and volcanic emissions should have included reducing ...
  • Antarctic pack-ice algal distribution : floe-scale spatial variability and predictability from physical parameters 

    Meiners, K. M.; Arndt, S.; Bestley, S.; Krumpen, T.; Ricker, R.; Milnes, M.; Newbery, K.; Freier, U.; Jarman, S.; King, R.; Proud, R.; Kawaguchi, S.; Meyer, B. (2017-07-29) - Journal article
    Antarctic pack ice serves as habitat for microalgae which contribute to Southern Ocean primary production and serve as important food source for pelagic herbivores. Ice algal biomass is highly patchy, and remains severely ...
  • The anthropogenic influence on wildfire regimes : charcoal records from the Holocene and Last Interglacial at Ioannina, Greece 

    Lawson, I. T.; Tzedakis, P. C.; Roucoux, K. H.; Galanidou, N. (2013-12) - Journal article
    Aim: To characterize the changing fire regime of a Mediterranean landscape during the Holocene and the Last Interglacial and, by comparing the two periods, to improve our understanding of the extent and timing of human ...
  • Apparent OSL ages of modern deposits from Fåbergstølsdalen, Norway : implications for sampling glacial sediments 

    King, Georgina; Robinson, Ruth Alison Joyce; Finch, Adrian Anthony (2013-10-16) - Journal article
    The application of optically stimulated luminescence (OSL) dating within glacial settings can be limited where sediments have not had their OSL signal fully reset by sunlight exposure. Heterogeneous bleaching can result ...
  • Are inventory based and remotely sensed above-ground biomass estimates consistent? 

    Hill, Timothy Charles; Williams, Mathew; Bloom, A. Anthony; Mitchard, Edward; Ryan, Casey (2013-09-19) - Journal article
    Carbon emissions resulting from deforestation and forest degradation are poorly known at local, national and global scales. In part, this lack of knowledge results from uncertain above-ground biomass estimates. It is ...
  • Are thermophilic microorganisms active in cold environments? 

    Cockell, Charles S.; Cousins, Claire Rachel; Wilkinson, Paul T.; Olsson-Francis, Karen; Rozitis, Ben (2015-07) - Journal article
    The mean air temperature of the Icelandic interior is below 10 °C. However, we have previously observed 16S rDNA sequences associated with thermophilic lineages in Icelandic basalts. Measurements of the temperatures of ...
  • Assessing cetacean surveys throughout the Mediterranean Sea : a gap analysis in environmental space 

    Mannocci, Laura; Roberts, Jason J.; Halpin, Patrick N.; Authier, Matthieu; Boisseau, Oliver; Bradai, Mohamed Nejmeddine; Cañadas, Ana; Chicote, Carla; David, Léa; Di-Méglio, Nathalie; Fortuna, Caterina M.; Frantzis, Alexandros; Gazo, Manel; Genov, Tilen; Hammond, Philip S.; Holcer, Draško; Kaschner, Kristin; Kerem, Dani; Lauriano, Giancarlo; Lewis, Tim; Notarbartolo di Sciara, Giuseppe; Panigada, Simone; Raga, Juan Antonio; Scheinin, Aviad; Ridoux, Vincent; Vella, Adriana; Vella, Joseph (2018-02-15) - Journal article
    Heterogeneous data collection in the marine environment has led to large gaps in our knowledge of marine species distributions. To fill these gaps, models calibrated on existing data may be used to predict species distributions ...
  • Assessing costs and benefits of measures to achieve Good Environmental Status in European regional seas: challenges, opportunities and lessons learnt 

    Börger, Tobias; Broszeit, Stefanie; Ahtiainen, Heini; Atkins, Jonathan; Burdon, Daryl; Luisetti, Tiziana; Murrillas, Arantza; Oinonen, Soile; Paltriguera, Lucille; Roberts, Louise; Uyarra, Maria C.; Austen, Melanie C. (2016-10-07) - Journal article
    The EU Marine Strategy Framework Directive (MSFD) requires Member States to assess the costs and benefits of Programmes of Measures (PoMs) put in place to ensure that European marine waters achieve Good Environmental Status ...
  • Assessing national perspectives on the Arctic : The case of Norway 

    Rehner, Robert Wilhelm Michael; McCauley, Darren; Khubaeva, Alisa; Zhuvakin, Dmitry (Arctic Research Centre, 2015-04-01) - Report
  • Assessing performance of Bayesian state-space models fit to Argos Satellite telemetry locations processed with Kalman Filtering 

    Silva, Monica A.; Jonsen, Ian; Russell, Deborah Jill Fraser; Prieto, Rui; Thompson, David; Baumgartner, Mark F. (2014-03-20) - Journal article
    Argos recently implemented a new algorithm to calculate locations of satellite-tracked animals that uses a Kalman filter (KF). The KF algorithm is reported to increase the number and accuracy of estimated positions over ...
  • Assessing the energy justice implications of bioenergy development in Nepal 

    Damgaard, Caroline; McCauley, Darren; Long, Jed (2017-03-27) - Journal article
    Background :  The emerging concept of energy justice has focused on the justice implications of conventional energy systems (oil, gas, coal, etc.). Instead, we focus on the meaning of energy justice in the context of ...
  • Assessing the societal benefits of river restoration using the ecosystem services approach 

    Vermaat, Jan E.; Wagtendonk, Alfred J.; Brouwer, Roy; Sheremet, Oleg; Ansink, Erik; Brockhoff, Tim; Plug, Maarten; Hellsten, Seppo; Aroviita, Jukka; Tylec, Luiza; Giełczewski, Marek; Kohut, Lukas; Brabec, Karel; Haverkamp, Jantine; Poppe, Michaela; Böck, Kerstin; Coerssen, Matthijs; Segersten, Joel; Hering, Daniel (2016-04) - Journal article
    The success of river restoration was estimated using the ecosystem services approach. In eight pairs of restored–unrestored reaches and floodplains across Europe, we quantified provisioning (agricultural products, wood, ...
  • The astrobiology of the anthropocene 

    Haqq-Misra, Jacob; Som, Sanjoy; Mullan, Brendan; Loureiro, Rafael; Schwieterman, Edward; Seyler, Lauren; Mogosanu, Haritina; Frank, Adam; Wolf, Eric; Forgan, Duncan; Cockell, Charles; Sullivan, Woodruff (2018-01-07) - Working or discussion paper
    Human influence on the biosphere has been evident at least since the development of widespread agriculture, and some stratigraphers have suggested that the activities of modern civilization indicate a geological epoch ...
  • Atmospheric drying as the main driver of dramatic glacier wastage in the southern Indian Ocean 

    Favier, V.; Verfaillie, D.; Berthier, E.; Menegoz, M.; Jomelli, V.; Kay, J. E.; Ducret, L.; Malbéteau, Y.; Brunstein, D.; Gallée, H.; Park, Y. -H.; Rinterknecht, V. (2016-09-01) - Journal article
    The ongoing retreat of glaciers at southern sub-polar latitudes is particularly rapid and widespread. Akin to northern sub-polar latitudes, this retreat is generally assumed to be linked to warming. However, no long-term ...
  • Attenuation of species abundance distributions by sampling 

    Shimadzu, Hideyasu; Darnell, Ross (2015-04-22) - Journal article
    Quantifying biodiversity aspects such as species presence/ absence, richness and abundance is an important challenge to answer scientific and resource management questions. In practice, biodiversity can only be assessed ...