Now showing items 5-24 of 642

  • Above-ground biomass and structure of 260 African tropical forests 

    Lewis, Simon L.; Sonké, B; Sunderland, T; Begne, SK; Lopez-Gonzalez, G; van der Heijden, Geertje; Phillips, OL; Affum-Baffoe, K; Baker, Tim; Banin, L; Bastin, J-F; Beeckman, H; Boeckx, P; Bogaert, J; De Cannière, C; Chezeaux, E; Clark, CJ; Collins, Murray; Djagbletey, G; Djuikouo, MNK; Droissart, V; Doucet, J-L; Ewango, CEN; Fauset, S; Feldpausch, T.R.; Foli, EG; Gillet, J-F; Hamilton, Alan C.; Harris, DJ; Hart, TB; de Haulleville, T; Hladik, A; Hufkens, K; Huygens, D; Jeanmart, P; Jeffery, KJ; Kearsley, E; Leal, ME; Lloyd, J; Lovett, JC; Makana, J-R; Malhi, Y; Marshall, AR; Ojo, L; Peh, KS-H; Pickavance, Georgia C.; Poulsen, JR; Reitsma, JM; Sheil, D; Simo, M; Steppe, K; Taedoumg, HE; Talbot, J; Taplin, JRD; Taylor, D; Thomas, SC; Toirambe, B; Verbeeck, H; Vleminckx, J; White, LJT; Willcock, S; Woell, H; Zemagho, L (The Royal Society, 2013-07)
    We report above-ground biomass (AGB), basal area, stem density and wood mass density estimates from 260 sample plots (mean size: 1.2 ha) in intact closed-canopy tropical forests across 12 African countries. Mean AGB is ...
  • Absorbing Roots Areas and Transpiring Leaf Areas at the Tropical Forest and Savanna Boundary in Brazil 

    Butler, Andre; Marimon-Junior, BH; Maracahipes, Leandro; Marimon, BS; Silvério, DV; Oliveira, EA; Lenza, E; Feldpausch, T.R.; Meir, P; J., G (Nova Science Publishers, Inc., 2013)
    savannas
  • Accuracy and consistency of grass pollen identification by human analysts using electron micrographs of surface ornamentation 

    Mander, L; Baker, SJ; Belcher, CM; Haselhorst, DS; Rodriguez, J; Thorn, JL; Tiwari, S; Urrego, DH; Wesseln, CJ; Punyasena, SW (Botanical Society of America, 2014-08)
    PREMISE OF THE STUDY: Humans frequently identify pollen grains at a taxonomic rank above species. Grass pollen is a classic case of this situation, which has led to the development of computational methods for identifying ...
  • Aeolian sediment reconstructions from the Scottish Outer Hebrides: Late Holocene storminess and the role of the North Atlantic Oscillation 

    Orme, Lisa Claire; Reinhardt, Liam; Jones, Richard T.; Charman, Dan J.; Croudace, Ian; Dawson, Alastair; Ellis, Michael; Barkwith, Andrew (Elsevier, 2016-01)
    Northern Europe can be strongly influenced by winter storms driven by the North Atlantic Oscillation (NAO), with a positive NAO index associated with greater storminess in northern Europe. However, palaeoclimate reconstructions ...
  • Aerial photography collected with a multirotor drone reveals impact of Eurasian beaver reintroduction on ecosystem structure 

    Puttock, A; Cunliffe, AM; Anderson, K; Brazier, Richard E. (NRC Research Press, 2015-04-29)
    Beavers are often described as ecological engineers with an ability to modify the structure and flow of fluvial systems and create complex wetland environments with dams, ponds and canals. Consequently, beaver activity has ...
  • After the Anthropocene: Politics and geographic inquiry for a new epoch 

    Johnson, ER; Morehouse, H; Dalby, S; Lehman, J; Nelson, S; Rowan, R; Wakefield, S; Yusoff, K (SAGE Publications Ltd, 2014-02-07)
    Crutzen and Stoermer's (2000) naming of the 'Anthropocene' has provoked lively debate across the physical and social sciences, but, while the term is gradually gaining acceptance as the signifier of the current geological ...
  • The age of CO2 released from soils in contrasting ecosystems during the arctic winter 

    Hartley, IP; Garnett, Mark H.; Sommerkorn, M; Hopkins, DW; Wookey, PA (Elsevier, 2013)
    In arctic ecosystems, winter soil respiration can contribute substantially to annual CO2 release, yet the source of this C is not clear. We analysed the 14C content of C released from plant-free plots in mountain birch ...
  • Agricultural change and farm incomes in Devon: an update 

    Robbins, Keith; Butler, Allan; Turner, Martin; Lobley, Matt (Centre for Rural Policy Research, University of Exeter, 2006-06)
  • Agricultural restructuring: the potential role of joint venture arrangements 

    Turner, Martin; Hambly, John (Centre for Rural Policy Research, University of Exeter, 2005-01)
  • An alternative approach to transfer functions? Testing the performance of a functional trait-based model for testate amoebae 

    van Bellen, S; Mauquoy, D; Payne, RJ; Roland, TP; Hughes, PDM; Daley, TJ; Loader, NJ; Street-Perrotte, FA; Rice, EM; Pancotto, VA (Elsevier, 2016-12-12)
    Transfer functions are now widely available to infer past environmental conditions from biotic assemblages. Existing transfer functions are based on species assemblages but an alternative is to characterize assemblages ...
  • Amazon Basin forest pyrogenic carbon stocks: First estimate of deep storage 

    Koele, N; Bird, M; Haig, J; Marimon-Junior, BH; Marimon, BS; Phillips, OL; de Oliveira, EA; Quesada, CA; Feldpausch, TR (Elsevier, 2017-11-15)
    Amazon Basin forest soils contain considerable soil organic carbon stocks; however, the contribution of soil pyrogenic carbon (PyC) to the total is unknown. PyC is derived from local fires (historical and modern) and ...
  • Amazon forest response to repeated droughts 

    Feldpausch, TR; Phillips, OL; Brienen, RJW; Gloor, E; Lloyd, J; Lopez-Gonzalez, G; Monteagudo-Mendoza, A; Malhi, Y; Alarcón, A; Álvarez Dávila, E; Alvarez-Loayza, P; Andrade, A; Aragao, LEOC; Arroyo, L; Aymard C., GA; Baker, TR; Baraloto, C; Barroso, J; Bonal, D; Castro, W; Chama, V; Chave, J; Domingues, TF; Fauset, S; Groot, N; Honorio C., E; Laurance, S; Laurance, WF; Lewis, SL; Licona, JC; Marimon, BS; Marimon-Junior, BH; Mendoza Bautista, C; Neill, DA; Oliveira, EA; Oliveira dos Santos, C; Pallqui Camacho, NC; Pardo-Molina, G; Prieto, A; Quesada, CA; Ramírez, F; Ramírez-Angulo, H; Réjou-Méchain, M; Rudas, A; Saiz, G; Salomão, RP; Silva-Espejo, JE; Silveira, M; ter Steege, H; Stropp, J; Terborgh, J; Thomas-Caesar, R; van der Heijden, GMF; Vásquez Martinez, R; Vilanova, E; Vos, VA (American Geophysical Union (AGU), 2016-07-01)
    The Amazon Basin has experienced more variable climate over the last decade, with a severe and widespread drought in 2005 causing large basin-wide losses of biomass. A drought of similar climatological magnitude occurred ...
  • Analysis of ontogenetic growth trends in two marine Antarctic bivalves Yoldia eightsi and Laternula elliptica: Implications for sclerochronology 

    Román-González, A; Scourse, JD; Butler, PG; Reynolds, DJ; Richardson, CA; Peck, LS; Brey, T; Hall, IR (Elsevier, 2016-05-11)
    There is an increasing use of marine species as palaeoclimate recorders for the marine realm. These archives provide novel baseline records of past oceanographic variability in regions devoid of instrumental observations. ...
  • Ancient pre-glacial erosion surfaces preserved beneath the West Antarctic Ice Sheet 

    Rose, K.C.; Ross, N; Jordan, T.A.; Bingham, R.G.; Corr, H.F.J.; Le Brocq, A.M.; Ferraccioli, F; Rippin, D.M.; Siegert, M.J. (European Geosciences Union (EGU) / Copernicus Publications, 2015-02-16)
    present ice-penetrating radar evidence for ancient (pre-glacial) and extensive erosion surfaces preserved beneath the upstream Institute and Möller ice streams, West Antarctica. Radar data reveal a smooth, laterally ...
  • Andean microrefugia: testing the Holocene to predict the Anthropocene 

    Valencia, BG; Matthews-Bird, F; Urrego, DH; Williams, JJ; Gosling, WD; Bush, M (Wiley for New Phytologist Trust, 2016-07-04)
    Summary Microrefugia are important for supporting populations during periods of unfavourable climate change and in facilitating rapid migration as conditions ameliorate. With ongoing anthropogenic climate change, ...
  • Animal geographies II: methods 

    Buller, HJ (Sage, 2014)
    Animal geographies challenge not only the place and placing of the human and the animal but, critically, the methods we use to engage with both in relation. This second review considers the various methodological implications ...
  • Animal Geographies III: Ethics 

    Buller, HJ (SAGE Publications, 2015-04-19)
    There is no animal geography without ethics. The very coupling of the words gives rise to an ethical endeavor; an acceptance that animals have a geography, a making visible of animals within our human geography and ...
  • Animal Research, the 3Rs, and the “internet of things”: Opportunities and Oversight in International Pharmaceutical Development 

    Niemi, S; Davies, GF (Oxford University Press (OUP) for Institute for Laboratory Animal Research (ILAR), 2016-12)
    Stages of drug (and vaccine) discovery and evaluation that involve laboratory animals increasingly occur via scientific collaborations across national borders and continents. Many of those research collaborations are between ...
  • Annually resolved North Atlantic marine climate over the last millennium 

    Reynolds, DJ; Scourse, JD; Halloran, PR; Nederbragt, AJ; Wanamaker, AD; Butler, PG; Richardson, CA; Heinemeier, J; Eiríksson, J; Knudsen, KL; Hall, IR (Nature Publishing Group, 2016-12-06)
    Owing to the lack of absolutely dated oceanographic information before the modern instrumental period, there is currently significant debate as to the role played by North Atlantic Ocean dynamics in previous climate ...
  • Antarctic ice sheet fertilises the Southern Ocean 

    Death, R.; Wadham, J.L.; Monteiro, F.; Le Brocq, A.M.; Tranter, M.; Ridgwell, A.; Dutkiewicz, S.; Raiswell, R. (European Geosciences Union (EGU) / Copernicus Publications, 2014-05-19)
    Southern Ocean (SO) marine primary productivity (PP) is strongly influenced by the availability of iron in surface waters, which is thought to exert a significant control upon atmospheric CO2 concentrations on glacial/interglacial ...