Search Results - "Williams, Richard J."

Interval squeeze: altered fire regimes and demographic responses interact to threaten woody species persistence as climate changes by Enright, Neal J, Fontaine, Joseph B, Bowman, David MJS, Bradstock, Ross A, Williams, Richard J

“…Projected effects of climate change across many ecosystems globally include more frequent disturbance by fire and reduced plant growth due to warmer (and…”
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Cascading extinctions and community collapse in model food webs by Dunne, Jennifer A., Williams, Richard J.

“…Species loss in ecosystems can lead to secondary extinctions as a result of consumer–resource relationships and other species interactions. We compare levels…”
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The probabilistic niche model reveals the niche structure and role of body size in a complex food web by Williams, Richard J, Anandanadesan, Ananthi, Purves, Drew

“…The niche model has been widely used to model the structure of complex food webs, and yet the ecological meaning of the single niche dimension has not been…”
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Do Concentrations of Ethinylestradiol, Estradiol, and Diclofenac in European Rivers Exceed Proposed EU Environmental Quality Standards? by Johnson, Andrew C, Dumont, Egon, Williams, Richard J, Oldenkamp, Rik, Cisowska, Iwona, Sumpter, John P

“…This study used a geographic based water model to predict the environmental concentrations of three pharmaceuticals, 17α-ethinylestradiol (EE2), 17β-estradiol…”
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Savanna Vegetation-Fire-Climate Relationships Differ Among Continents by Lehmann, Caroline E. R., Anderson, T. Michael, Sankaran, Mahesh, Higgins, Steven I., Archibald, Sally, Hoffmann, William A., Hanan, Niall P., Williams, Richard J., Fensham, Roderick J., Felfili, Jeanine, Hutley, Lindsay B., Ratnam, Jayashree, San Jose, Jose, Montes, Ruben, Franklin, Don, Russell-Smith, Jeremy, Ryan, Casey M., Durigan, Giselda, Hiernaux, Pierre, Haidar, Ricardo, Bowman, David M. J. S., Bond, William J.

“…Ecologists have long sought to understand the factors controlling the structure of savanna vegetation. Using data from 2154 sites in savannas across Africa,…”
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On the prevalence and dynamics of inverted trophic pyramids and otherwise top‐heavy communities by McCauley, Douglas J., Gellner, Gabriel, Martinez, Neo D., Williams, Richard J., Sandin, Stuart A., Micheli, Fiorenza, Mumby, Peter J., McCann, Kevin S., Brose, Ulrich

“…Classically, biomass partitioning across trophic levels was thought to add up to a pyramidal distribution. Numerous exceptions have, however, been noted…”
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Allometric scaling enhances stability in complex food webs by Brose, Ulrich, Williams, Richard J, Martinez, Neo D

“…Classic local stability theory predicts that complex ecological networks are unstable and are unlikely to persist despite empiricists' abundant documentation…”
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Worldwide estimation of river concentrations of any chemical originating from sewage‐treatment plants using dilution factors by Keller, Virginie D.J, Williams, Richard J, Lofthouse, Caryn, Johnson, Andrew C

“…Dilution factors are a critical component in estimating concentrations of so‐called “down‐the‐drain” chemicals (e.g., pharmaceuticals) in rivers. The present…”
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Ecological mechanisms underpinning climate adaptation services by Lavorel, Sandra, Colloff, Matthew J, Mcintyre, Sue, Doherty, Michael D, Murphy, Helen T, Metcalfe, Daniel J, Dunlop, Michael, Williams, Richard J, Wise, Russell M, Williams, Kristen J

“…Ecosystem services are typically valued for their immediate material or cultural benefits to human wellbeing, supported by regulating and supporting services…”
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Fire management for biodiversity conservation: Key research questions and our capacity to answer them by Driscoll, Don A., Lindenmayer, David B., Bennett, Andrew F., Bode, Michael, Bradstock, Ross A., Cary, Geoffrey J., Clarke, Michael F., Dexter, Nick, Fensham, Rod, Friend, Gordon, Gill, Malcolm, James, Stewart, Kay, Geoff, Keith, David A., MacGregor, Christopher, Russell-Smith, Jeremy, Salt, David, Watson, James E.M., Williams, Richard J., York, Alan

“…Knowing how species respond to fire regimes is essential for ecologically sustainable management. This axiom raises two important questions: (1) what knowledge…”
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A Selective, Hydrogel‐Based Prodrug Delivery System Efficiently Activates a Suicide Gene to Remove Undifferentiated Human Stem Cells Within Neural Grafts by Law, Kevin C. L., Mahmoudi, Negar, Zadeh, Zahra E., Williams, Richard. J., Hunt, Cameron P. J., Nagy, Andras, Thompson, Lachlan H., Nisbet, David R., Parish, Clare L.

“…Abstract The directed differentiation of human pluripotent stem cells (hPSCs) into defined populations has advanced regenerative medicine, especially for…”
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Application of Single-Frequency Arbitrarily Directed Split Beam Metasurface Reflector in Refractive Index Measurements by Wells, Brian M, Tripp, Joseph F, Krupa, Nicholas W, Rittenberg, Andrew J, Williams, Richard J

“…We present a sensor that utilizes a modified single-frequency split beam metasurface reflector to measure the refractive index of materials ranging from one to…”
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Simple prediction of interaction strengths in complex food webs by Berlow, Eric L, Dunne, Jennifer A, Martinez, Neo D, Stark, Philip B, Williams, Richard J, Brose, Ulrich

“…Darwin's classic image of an "entangled bank" of interdependencies among species has long suggested that it is difficult to predict how the loss of one species…”
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Peptide-Based Scaffolds Support Human Cortical Progenitor Graft Integration to Reduce Atrophy and Promote Functional Repair in a Model of Stroke by Somaa, Fahad A., Wang, Ting-Yi, Niclis, Jonathan C., Bruggeman, Kiara F., Kauhausen, Jessica A., Guo, Haoyao, McDougall, Stuart, Williams, Richard J., Nisbet, David R., Thompson, Lachlan H., Parish, Clare L.

“…Stem cell transplants offer significant hope for brain repair following ischemic damage. Pre-clinical work suggests that therapeutic mechanisms may be…”
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Parasites affect food web structure primarily through increased diversity and complexity by Dunne, Jennifer A, Lafferty, Kevin D, Dobson, Andrew P, Hechinger, Ryan F, Kuris, Armand M, Martinez, Neo D, McLaughlin, John P, Mouritsen, Kim N, Poulin, Robert, Reise, Karsten, Stouffer, Daniel B, Thieltges, David W, Williams, Richard J, Zander, Claus Dieter

“…Comparative research on food web structure has revealed generalities in trophic organization, produced simple models, and allowed assessment of robustness to…”
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Extracellular Matrix Biomimetic Hydrogels, Encapsulated with Stromal Cell-Derived Factor 1, Improve the Composition of Foetal Tissue Grafts in a Rodent Model of Parkinson's Disease by Penna, Vanessa, Moriarty, Niamh, Wang, Yi, Law, Kevin C L, Gantner, Carlos W, Williams, Richard J, Nisbet, David R, Parish, Clare L

“…Clinical studies have provided evidence for dopamine (DA) cell replacement therapy in Parkinson's Disease. However, grafts derived from foetal tissue or…”
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Cytotoxic drugs in drinking water: A prediction and risk assessment exercise for the Thames catchment in the United Kingdom by Rowney, Nicole C, Johnson, Andrew C, Williams, Richard J

“…Cytotoxic, also known as antineoplastic, drugs remain an important weapon in the fight against cancer. This study considers the water quality implications for…”
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Cytotoxic T cells swarm by homotypic chemokine signalling by Galeano Niño, Jorge Luis, Pageon, Sophie V, Tay, Szun S, Colakoglu, Feyza, Kempe, Daryan, Hywood, Jack, Mazalo, Jessica K, Cremasco, James, Govendir, Matt A, Dagley, Laura F, Hsu, Kenneth, Rizzetto, Simone, Zieba, Jerzy, Rice, Gregory, Prior, Victoria, O'Neill, Geraldine M, Williams, Richard J, Nisbet, David R, Kramer, Belinda, Webb, Andrew I, Luciani, Fabio, Read, Mark N, Biro, Maté

“…Cytotoxic T lymphocytes (CTLs) are thought to arrive at target sites either via random search or following signals by other leukocytes. Here, we reveal…”
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Biology, methodology or chance? The degree distributions of bipartite ecological networks by Williams, Richard J

“…The distribution of the number of links per species, or degree distribution, is widely used as a summary of the topology of complex networks. Degree…”
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Temporally controlled growth factor delivery from a self-assembling peptide hydrogel and electrospun nanofibre composite scaffold by Bruggeman, Kiara F, Wang, Yi, Maclean, Francesca L, Parish, Clare L, Williams, Richard J, Nisbet, David R

“…Tissue-specific self-assembling peptide (SAP) hydrogels designed based on biologically relevant peptide sequences have great potential in regenerative…”
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