Now showing items 375-394 of 999

    • Global economic effects of changes in crops, pasture, and forests due to changing climate, carbon dioxide, and ozone 

      Reilly, John M.; Paltsev, S.; Felzer, Benjamin S.; Wang, X.; Kicklighter, David W.; Melillo, Jerry M.; Prinn, Ronald G.; Sarofim, Marcus C.; Sokolov, Andrei P.; Wang, C. (2006-01)
      Multiple environmental changes will have consequences for global vegetation. To the extent that crop yields and pasture and forest productivity are affected there can be important economic consequences. We examine the ...
    • Global evaluation of gap-filling approaches for seasonal NDVI with considering vegetation growth trajectory, protection of key point, noise resistance and curve stability 

      Liu, Ronggao; Shang, Rong; Liu, Yang; Lu, Xiaoliang (2016-11)
      A variety of approaches are available to fill the gaps in the time series of vegetation parameters estimated from satellite observations. In this paper, a scheme considering vegetation growth trajectory, protection of ...
    • Global N removal by freshwater aquatic systems using a spatially distributed, within-basin approach 

      Wollheim, Wilfred M.; Vorosmarty, Charles J.; Bouwman, A. F.; Green, Pamela; Harrison, John A.; Linder, Ernst; Peterson, Bruce J.; Seitzinger, Sybil P.; Syvitski, James P. M. (American Geophysical Union, 2008-06-20)
      We explored the role of aquatic systems in the global N cycle using a spatially distributed, within-basin, aquatic nitrogen (N) removal model, implemented within the Framework for Aquatic Modeling in the Earth System ...
    • Glycinergic feedback enhances synaptic gain in the distal retina 

      Jiang, Zheng; Yang, Jinnan; Purpura, Lauren A.; Liu, Yufei; Ripps, Harris; Shen, Wen (2013-09)
      Glycine input originates with interplexiform cells, a group of neurons situated within the inner retina that transmit signals centrifugally to the distal retina. The effect on visual function of this novel mechanism is ...
    • Golgi cells operate as state-specific temporal filters at the input stage of the cerebellar cortex 

      Heine, Shane A.; Highstein, Stephen M.; Blazquez, Pablo M. (Society for Neuroscience, 2010-12-15)
      Cerebellar processing of incoming information begins at the synapse between mossy fibers and granule cells, a synapse that is strongly controlled through Golgi cell inhibition. Thus, Golgi cells are uniquely positioned to ...
    • A gradient of nutrient enrichment reveals nonlinear impacts of fertilization on Arctic plant diversity and ecosystem function 

      Prager, Case M.; Naeem, Shahid; Boelman, Natalie; Eitel, Jan U. H.; Greaves, Heather; Heskel, Mary; Magney, Troy; Menge, Duncan N. L.; Vierling, Lee; Griffin, Kevin L. (John Wiley & Sons, 2017-03-22)
      Rapid environmental change at high latitudes is predicted to greatly alter the diversity, structure, and function of plant communities, resulting in changes in the pools and fluxes of nutrients. In Arctic tundra, increased ...
    • Grand challenges in biodiversity informatics 

      Sarkar, Indra Neil (2007-01)
      The exponentially growing array of biological data has necessitated the development of a new information management domain, biodiversity informatics. It is one of the newest members of the ‘informatics’ sub-disciplines, ...
    • Grasshopper DCMD : an undergraduate electrophysiology lab for investigating single-unit responses to behaviorally-relevant stimuli 

      Nguyen, Dieu My T.; Roper, Mark; Mircic, Stanislav; Olberg, Robert M.; Gage, Gregory J. (Faculty of Undergraduate Neuroscience, 2017-05)
      Avoiding capture from a fast-approaching predator is an important survival skill shared by many animals. Investigating the neural circuits that give rise to this escape behavior can provide a tractable demonstration of ...
    • Green algal infection of American horseshoe crab (Limulus polyphemus) exoskeletal structures 

      Braverman, Hillary; Leibovitz, Louis; Lewbart, Gregory A. (2012-06)
      Degenerative lesions in the dorsum of the horseshoe crab (Limulus polyphemus) exoskeleton, eyes, arthrodial membrane, and base of the telson were documented in a population of wild caught laboratory animals. The disease ...
    • The green algal underground : evolutionary secrets of desert cells 

      Cardon, Zoe G.; Gray, Dennis W.; Lewis, Louise A. (American Institute of Biological Sciences, 2008-02)
      Microscopic, unicellular, free-living green algae are found in desert microbiotic crusts worldwide. Although morphologically simple, green algae in desert crusts have recently been found to be extraordinarily diverse, with ...
    • Greening China naturally 

      Cao, Shixiong; Sun, Ge; Zhang, Zhiqiang; Chen, Liding; Feng, Qi; Fu, Bojie; McNulty, Steve; Shankman, David; Tang, Jianwu; Wang, Yanhui; Wei, Xiaohua (2011-04)
      China leads the world in afforestation, and is one of the few countries whose forested area is increasing. However, this massive ‘‘greening’’ effort has been less effective than expected; afforestation has sometimes produced ...
    • GRIPseq data for S. Purpuratus 24 hpf 

      Tulin, Sarah; Barsi, Julius C.; Bocconcelli, Carlo; Smith, Joel (2015-01-19)
      This dataset is the result of a new method for identifying putative cis-regulatory elements genome wide, termed GRIPseq for Genome-wide Regulatory element Immunoprecipitation. Our protocol combines elements of chromatin ...
    • The gut microbiota of rural Papua New Guineans : composition, diversity patterns, and ecological processes 

      Martinez, Ines; Stegen, James C.; Maldonado-Gomez, Maria X.; Eren, A. Murat; Siba, Peter M.; Greenhill, Andrew R.; Walter, Jens (Cell Press, 2015-04-16)
      Although recent research revealed an impact of westernization on diversity and composition of the human gut microbiota, the exact consequences on metacommunity characteristics are insufficiently understood, and the underlying ...
    • Harmonic analysis of the cone flicker ERG of rabbit 

      Qian, Haohua; Alexander, Kenneth R.; Ripps, Harris (Elsevier B.V., 2010-10-23)
      Harmonic analysis was used to characterize the rabbit flicker ERG elicited by sinusoidally modulated full-field stimuli under light-adapted conditions. The frequency-response function for fundamental amplitude, derived ...
    • Hemichannel composition and electrical synaptic transmission : molecular diversity and its implications for electrical rectification 

      Palacios-Prado, Nicolas; Huetteroth, Wolf; Pereda, Alberto E. (Frontiers Media, 2014-10-15)
      Unapposed hemichannels (HCs) formed by hexamers of gap junction proteins are now known to be involved in various cellular processes under both physiological and pathological conditions. On the other hand, less is known ...
    • Heterotrophic Archaea dominate sedimentary subsurface ecosystems off Peru 

      Biddle, Jennifer F.; Lipp, Julius S.; Lever, Mark A.; Lloyd, Karen G.; Sorensen, Ketil B.; Anderson, Rika E.; Fredricks, Helen F.; Elvert, Marcus; Kelly, Timothy J.; Schrag, Daniel P.; Sogin, Mitchell L.; Brenchley, Jean E.; Teske, Andreas; House, Christopher H.; Hinrichs, Kai-Uwe (National Academy of Sciences, 2006-02-27)
      Studies of deeply buried, sedimentary microbial communities and associated biogeochemical processes during Ocean Drilling Program Leg 201 showed elevated prokaryotic cell numbers in sediment layers where methane is consumed ...
    • Heterotrophic respiration in disturbed forests : a review with examples from North America 

      Harmon, Mark E.; Bond-Lamberty, Benjamin; Tang, Jianwu; Vargas, Rodrigo (American Geophysical Union, 2011-05-14)
      Heterotrophic respiration (RH) is a major process releasing carbon to the atmosphere and is essential to understanding carbon dynamics in terrestrial ecosystems. Here we review what is known about this flux as related to ...
    • High density and ligand affinity confer ultrasensitive signal detection by a guanylyl cyclase chemoreceptor 

      Pichlo, Magdalena; Bungert-Plumke, Stefanie; Weyand, Ingo; Seifert, Reinhard; Bonigk, Wolfgang; Strunker, Timo; Kashikar, Nachiket D.; Goodwin, Normann; Muller, Astrid; Pelzer, Patric; Van, Qui; Enderlein, Jorg; Klemm, Clementine; Krause, Eberhard; Trotschel, Christian; Poetsch, Ansgar; Kremmer, Elisabeth; Kaupp, U. Benjamin (Rockefeller University Press, 2014-08-18)
      Guanylyl cyclases (GCs), which synthesize the messenger cyclic guanosine 3′,5′-monophosphate, control several sensory functions, such as phototransduction, chemosensation, and thermosensation, in many species from worms ...
    • High particle export over the continental shelf of the west Antarctic Peninsula 

      Buesseler, Ken O.; McDonnell, Andrew M. P.; Schofield, Oscar M. E.; Steinberg, Deborah K.; Ducklow, Hugh W. (American Geophysical Union, 2010-11-24)
      Drifting cylindrical traps and the flux proxy 234Th indicate more than an order of magnitude higher sinking fluxes of particulate carbon and 234Th in January 2009 than measured by a time-series conical trap used regularly ...
    • Histidine suppresses zinc modulation of connexin hemichannels 

      Chappell, Richard L.; Qian, Haohua; Zakevicius, Jane; Ripps, Harris (Marine Biological Laboratory, 2004-12)
      Zinc has been shown to modulate hemichannel currents of connexins Cx35 and Cx38 in Xenopus oocytes. In both cases the effects were biphasic; i.e., low concentrations of zinc enhanced, whereas higher concentrations decreased, ...