Gavin L. Simpson
Gavin L. Simpson
Quantitative Environmental Scientist, University of Regina
Verified email at uregina.ca - Homepage
TitleCited byYear
vegan: Community Ecology Package
J Oksanen, R Kindt, P Legendre, B O’Hara, GL Simpson, MHH Stevens, ...
15720*2009
vegan: Community Ecology Package
J Oksanen, FG Blanchet, R Kindt, P Legendre, P Minchin, B O’Hara, ...
R package version, 1.8-6, 0
15287*
Assessing eutrophication and reference conditions for Scottish freshwater lochs using subfossil diatoms
H Bennion, J Fluin, GL Simpson
Journal of Applied Ecology 41 (1), 124-138, 2004
1952004
Looking forward through the past: identification of 50 priority research questions in palaeoecology
AWR Seddon, AW Mackay, AG Baker, HJB Birks, E Breman, CE Buck, ...
Journal of Ecology 102 (1), 256-267, 2014
1402014
Defining reference conditions and restoration targets for lake ecosystems using palaeolimnology: a synthesis
H Bennion, RW Battarbee, CD Sayer, GL Simpson, TA Davidson
Journal of Paleolimnology 45 (4), 533-544, 2011
1352011
Paleolimnological evidence of the effects on lakes of energy and mass transfer from climate and humans
PR Leavitt, SC Fritz, NJ Anderson, PA Baker, T Blenckner, L Bunting, ...
Limnology and Oceanography 54 (6part2), 2330-2348, 2009
1202009
Analogue methods in palaeoecology: using the analogue package
GL Simpson
Journal of Statistical Software 22 (2), 1-29, 2007
1022007
Analogue: analogue and weighted averaging methods for palaeoecology
GL Simpson, J Oksanen
R package, 2011
91*2011
Combining limnological and palaeolimnological data to disentangle the effects of nutrient pollution and climate change on lake ecosystems: problems and potential
RW Battarbee, NJ Anderson, H Bennion, GL Simpson
Freshwater biology 57 (10), 2091-2106, 2012
782012
Climate change and the future of freshwater biodiversity in Europe: a primer for policy-makers
B Moss, D Hering, AJ Green, A Aidoud, E Becares, M Beklioglu, ...
Freshwater Reviews 2 (2), 103-131, 2009
732009
TBT causes regime shift in shallow lakes
CD Sayer, DJ Hoare, GL Simpson, ACG Henderson, ER Liptrot, ...
Environmental Science & Technology 40 (17), 5269-5275, 2006
722006
Reconstructing pre-acidification pH for an acidified Scottish loch: a comparison of palaeolimnological and modelling approaches
RW Battarbee, DT Monteith, S Juggins, CD Evans, A Jenkins, ...
Environmental Pollution 137 (1), 135-149, 2005
722005
permute: Functions for generating restricted permutations of data
GL Simpson
692012
Trends in the hydrochemistry of acid-sensitive surface waters in the UK 1988–2008
DT Monteith, CD Evans, PA Henrys, GL Simpson, IA Malcolm
Ecological Indicators 37, 287-303, 2014
682014
A palaeolimnological meta-database for assessing the ecological status of lakes
RW Battarbee, D Morley, H Bennion, GL Simpson, M Hughes, V Bauere
Journal of Paleolimnology 45 (4), 405-414, 2011
622011
Deciphering the effect of climate change and separating the influence of confounding factors in sediment core records using additive models
GL Simpson, NJ Anderson
Limnology and Oceanography 54 (6part2), 2529-2541, 2009
622009
Detecting changing river temperatures in England and Wales
HG Orr, GL Simpson, S des Clers, G Watts, M Hughes, J Hannaford, ...
Hydrological Processes 29 (5), 752-766, 2015
602015
The use of diatom records to establish reference conditions for UK lakes subject to eutrophication
H Bennion, GL Simpson
Journal of paleolimnology 45 (4), 469-488, 2011
572011
Defining reference conditions for acidified waters using a modern analogue approach
GL Simpson, EM Shilland, JM Winterbottom, J Keay
Environmental Pollution 137 (1), 119-133, 2005
572005
Decrease in CO2 efflux from northern hardwater lakes with increasing atmospheric warming
K Finlay, RJ Vogt, MJ Bogard, B Wissel, BM Tutolo, GL Simpson, ...
Nature 519 (7542), 215, 2015
492015
Trends in bulk deposition of acidity in the UK, 1988–2007, assessed using additive models
CJ Curtis, GL Simpson
Ecological Indicators 37, 274-286, 2014
472014
Defining ecological and chemical reference conditions and restoration targets for nine European lakes
H Bennion, GL Simpson, NJ Anderson, G Clarke, X Dong, A Hobęk, ...
Journal of Paleolimnology 45 (4), 415-431, 2011
452011
Analogue Methods in Palaeolimnology
GL Simpson
Tracking Environmental Change Using Lake Sediments, 495-522, 2012
44*2012
The role of cladocerans in tracking long-term change in shallow lake trophic status
TA Davidson, H Bennion, E Jeppesen, GH Clarke, CD Sayer, D Morley, ...
Hydrobiologia 676 (1), 299, 2011
442011
Nutrients exert a stronger control than climate on recent diatom communities in Esthwaite Water: evidence from monitoring and palaeolimnological records
X Dong, H Bennion, SC Maberly, CD Sayer, GL Simpson, RW Battarbee
Freshwater Biology 57 (10), 2044-2056, 2012
412012
Terrestrial and aquatic responses to climate change and human impact on the southeastern Tibetan Plateau during the past two centuries
J Wischnewski, A Kramer, Z Kong, AW Mackay, GL Simpson, S Mischke, ...
Global Change Biology, 2011
412011
An assessment of the mechanisms for the transfer of lead and mercury from atmospherically contaminated organic soils to lake sediments with particular reference to Scotland, UK
NL Rose, H Yang, SD Turner, GL Simpson
Geochimica et Cosmochimica Acta 82, 113-135, 2012
402012
Statistical learning in palaeolimnology
GL Simpson, HJB Birks
Tracking environmental change using lake sediments, 249-327, 2012
402012
Recovery of UK lakes from acidification: an assessment using combined palaeoecological and contemporary diatom assemblage data
RW Battarbee, GL Simpson, EM Shilland, RJ Flower, A Kreiser, H Yang, ...
Ecological indicators 37, 365-380, 2014
372014
Evidence of recovery from acidification in the macroinvertebrate assemblages of UK fresh waters: a 20-year time series
JF Murphy, JH Winterbottom, S Orton, GL Simpson, EM Shilland, ...
Ecological Indicators 37, 330-340, 2014
372014
Identifying from recent sediment records the effects of nutrients and climate on diatom dynamics in Loch Leven
H BENNION, L CARVALHO, CD SAYER, GL SIMPSON, J WISCHNEWSKI
Freshwater Biology, 2011
352011
neotoma: A Programmatic Interface to the Neotoma Paleoecological Database
S Goring, A Dawson, GL Simpson, K Ram, RW Graham, EC Grimm, ...
Open Quaternary 1 (2), 1-17, 2015
342015
Diel surface temperature range scales with lake size
RI Woolway, ID Jones, SC Maberly, JR French, DM Livingstone, ...
PLoS One 11 (3), e0152466, 2016
332016
Increased variability and sudden ecosystem state change in Lake Winnipeg, Canada, caused by 20th century agriculture
L Bunting, PR Leavitt, GL Simpson, B Wissel, KR Laird, BF Cumming, ...
Limnology and Oceanography 61 (6), 2090-2107, 2016
322016
A reference typology of low alkalinity lakes in the UK based on pre-acidification diatom assemblages from lake sediment cores
RW Battarbee, GL Simpson, H Bennion, C Curtis
Journal of Paleolimnology 45 (4), 489-505, 2011
302011
Assessing the accuracy of diatom-based transfer functions in defining reference pH conditions for acidified lakes in the United Kingdom
RW Battarbee, DT Monteith, S Juggins, GL Simpson, EW Shilland, ...
The Holocene 18 (1), 57-67, 2008
292008
Palaeolimnological assessment of lake acidification and environmental change in the Athabasca Oil Sands Region, Alberta
CJ Curtis, R Flower, R Neil, J Shilland, GL Simpson, S Turner, Y Handong, ...
Journal of Limnology 69 (1s), 92-104, 2010
282010
Human impacts: Applications of numerical methods to evaluate surface-water acidification and eutrophication
GL Simpson, RI Hall
Tracking environmental change using lake sediments, 579-614, 2012
252012
Assessing degradation and recovery pathways in lakes impacted by eutrophication using the sediment record
H Bennion, GL Simpson, BJ Goldsmith
Frontiers in Ecology and Evolution 3, 94, 2015
202015
Package ‘vegan3d’
J Oksanen, R Kindt, GL Simpson, MJ Oksanen
192018
Harnessing the potential of the multi‐indicator palaeoecological approach: an assessment of the nature and causes of ecological change in a eutrophic shallow lake
H Bennion, TA Davidson, CD Sayer, GL Simpson, NL Rose, JP Sadler
Freshwater biology 60 (7), 1423-1442, 2015
192015
Dominance of biologically produced nitrate in upland waters of Great Britain indicated by stable isotopes
CJ Curtis, THE Heaton, GL Simpson, CD Evans, J Shilland, S Turner
Biogeochemistry 111 (1-3), 535-554, 2012
152012
Changing water temperatures: a surface water archive for England and Wales
HG Orr, S Des Clers, GL Simpson, M Hughes, RW Battarbee, L Cooper, ...
British Hydrological Society, 2010
152010
Taxon selection using statistical learning techniques to improve transfer function prediction
S Juggins, GL Simpson, RJ Telford
The Holocene 25 (1), 130-136, 2015
142015
Responses of microbial phototrophs to late‐Holocene environmental forcing of lakes in south‐west Greenland
NS Reuss, NJ Anderson, SC Fritz, GL Simpson
Freshwater biology 58 (4), 690-704, 2013
142013
‘Diatoms and pH reconstruction’(1990) revisited
HJB Birks, GL Simpson
Journal of Paleolimnology 49 (3), 363-371, 2013
142013
cocorresp: Co-Correspondence Analysis Ordination Methods (R Package Version 01-9)
GL Simpson
142009
A Bayesian palaeoenvironmental transfer function model for acidified lakes
PB Holden, AW Mackay, GL Simpson
Journal of Paleolimnology 39 (4), 551-566, 2008
142008
The effects of atmospheric nitrogen deposition on terrestrial and freshwater biodiversity
JS Baron, M Barber, M Adams, JI Agboola, EB Allen, WJ Bealey, ...
Nitrogen deposition, critical loads and biodiversity, 465-480, 2014
132014
A meta-database for recent paleolimnological studies
RW Battarbee, D Morley, H Bennion, GL Simpson
Past Human-Climate-Ecosystem Interactions, 2007
122007
The role of palaeolimnology in identifying reference conditions and assessing ecological status of lakes
H Bennion, G Simpson, M Hughes, G Phillips, I Fozzard
How to assess and monitor ecological quality in freshwaters. Tema Nord 547 …, 2003
112003
Development of a risk based prioritisation protocol for standing waters in Great Britain based on a georeferenced inventory-Phase 2
H Bennion, J Hilton, M Hughes, J Clark, D Hornby, M Kernan, G Simpson
Environment Agency, 2003
102003
Updating previous estimates of the load and source apportionment of nitrogen to waters in the UK
G Hughes, E Lord, L Wilson, R Gooday, S Anthony, C Curtis, G Simpson
Defra Project: WQ0111, 2008
82008
Freshwater UMBRELLA-the Effect of Nitrogen Deposition & Climate Change on Freshwaters in the UK.
CJ Curtis, G Simpson, BA Emmett, CD (Chris) Evans, T Heaton, M Kernan, ...
82005
The coming and going of a marl lake: multi-indicator palaeolimnology reveals abrupt ecological change and alternative views of reference conditions
E Wiik, H Bennion, CD Sayer, TA Davidson, SJ Clarke, S McGowan, ...
Frontiers in Ecology and Evolution 3, 82, 2015
72015
Variance and rate‐of‐change as early warning signals for a critical transition in an aquatic ecosystem state: a test case from Tasmania, Australia
KK Beck, MS Fletcher, PS Gadd, H Heijnis, KM Saunders, GL Simpson, ...
Journal of Geophysical Research: Biogeosciences 123 (2), 495-508, 2018
52018
The present is the key to the past, but what does the future hold for the recovery of surface waters from acidification?
RC Helliwell, GL Simpson
Water research 44 (10), 3166-3180, 2010
52010
Defining restoration targets for acidified upland lakes using diatom and cladoceran sub-fossil remains and the modern analogue technique
GL Simpson
PQDT-Global, 2005
52005
Modelling palaeoecological time series using generalized additive models
GL Simpson
BioRxiv, 322248, 2018
42018
Paleolimnological assessment of nutrient enrichment on diatom assemblages in a priori defined nitrogen-and phosphorus-limited lakes downwind of the Athabasca Oil Sands, Canada
KR Laird, B Das, B Hesjedal, PR Leavitt, GR Mushet, KA Scott, ...
Journal of Limnology 76 (3), 2017
42017
Isotopic structure of lake whitefish in Lake Huron: Evidence for regional and local populations based on resource use
RL Eberts, B Wissel, GL Simpson, SS Crawford, W Stott, RH Hanner, ...
North American Journal of Fisheries Management 37 (1), 133-148, 2017
42017
Restricted permutations; using the permute package
GL Simpson
Environmental Change Research Centre-UCL, 2012
42012
Environmental change in Scottish fresh waters
H Bennion, G Simpson, RW Battarbee, NG Cameron, C Curtis, RJ Flower, ...
The Stationery Office, 2002
42002
Regional climate changes drive increased scaled-chrysophyte abundance in lakes downwind of Athabasca Oil Sands nitrogen emissions
GR Mushet, KR Laird, B Das, B Hesjedal, PR Leavitt, KA Scott, ...
Journal of Paleolimnology 58 (3), 419-435, 2017
32017
Epilithic diatoms
RJ Flower, GL Simpson, AM Kreiser, H Yang, EM Shilland, RW Battarbee
ENSIS Ltd, Environmental Change Research Centre, University College London, 2010
32010
Integrating habitats directive and Water Framework Directive monitoring: Baseline surveys of Natura 2000 standing water habitats in Wales.
B Goldsmith, H Bennion, M Hughes, V Jones, C Rose, G Simpson
32005
Tributyltin (TBT) and the decline of the Norfolk Broads
CD Sayer, MJ Jackson, GL Simpson, MJ Waldock, J Reed, ...
Environmental Change Research Centre, 2001
32001
Spatial variations in snowpack chemistry, isotopic composition of NO3− and nitrogen deposition from the ice sheet margin to the coast of western Greenland
CJ Curtis, J Kaiser, A Marca, NJ Anderson, G Simpson, V Jones, ...
Biogeosciences 15 (2), 529-550, 2018
22018
Effects of experimental nitrogen fertilization on planktonic metabolism and CO2 flux in a hypereutrophic hardwater lake
MJ Bogard, K Finlay, MJ Waiser, VP Tumber, DB Donald, E Wiik, ...
PloS one 12 (12), e0188652, 2017
22017
CRAN Task View: Analysis of Ecological and Environmental Data
G Simpson
22015
Influence of the Little Ice Age on the biological structure of lakes in South West Greenland
S McGowan, EJ Hogan, V Jones, NJ Anderson, G Simpson
AGU Fall Meeting Abstracts, 2013
22013
O’Hara, Gavin L
J Oksanen, F Guillaume Blanchet, PL Kindt Roeland, R Peter, RB Minchin
Simpson, Peter Solymos, M., Henry H. Stevens, Wagner, H, 2.0-2, 2011
22011
Macroinvertebrates
AG Hildrew, JH Winterbottom, S Orton, J Murphy, GL Simpson, ...
ENSIS Ltd, Environmental Change Research Centre, University College London, 2010
22010
Paleolimnological study of selected lakes in the Wood Buffalo region involving collection and analysis of surface, bottom and full core lake sediment samples
CJ Curtis, R Flower, N Rose, J Shilland, GL Simpson, S Turner, H Yang, ...
ECRC, 2008
22008
Freshwater screening and assessment based on freshwater critical loads.
C Curtis, D Cooper, A Jenkins, M Kernan, L Pope, G Simpson
WRc, 2003
22003
Holocene el Nińo–southern Oscillation variability reflected in subtropical Australian precipitation
C Barr, J Tibby, MJ Leng, JJ Tyler, ACG Henderson, JT Overpeck, ...
Scientific reports 9 (1), 1627, 2019
12019
Differential stimulation and suppression of phytoplankton growth by ammonium enrichment in eutrophic hardwater lakes over 16 years
VJ Swarbrick, GL Simpson, PM Glibert, PR Leavitt
Limnology and Oceanography 64 (S1), S130-S149, 2019
12019
Fitting count and zero-inflated count GLMMs with mgcv
G Simpson
From the Bottom of the Heap, 2017
12017
Simultaneous intervals for smooths revisited
G Simpson
From the Bottom of the Heap, 2016
12016
coenocliner: a coenocline simulation package for R
GL Simpson
12016
Package ‘dendextend’
T Galili, G Simpson, G Jefferis, M Gallotta, J Renaudie
12014
Modelling seasonal data with GAMs
G Simpson
From the Bottom of the Heap, 2014
12014
Looking forward through the past
AWR Seddon, AW Mackay, AG Baker, HJB Birks, E Breman, CE Buck, ...
Journal of Ecology, 2014
12014
Freshwater Umbrella-The effect of nitrogen deposition and climate change on freshwaters in the UK. Report to DEFRA under contract CPEA17.
C Curtis, GL Simpson, J Shilland, S Turner, M Kernan, DT Monteith, ...
12007
Summary of Research under DETR Contract" Acidification of freshwaters: the role of nitrogen and the prospects for recovery", EPG1/3/117
C Curtis, G Simpson
ECRC, University College London, 2001
12001
Spatial and temporal variation in nitrogen fixation and its importance to phytoplankton in phosphorus‐rich lakes
NM Hayes, A Patoine, HA Haig, GL Simpson, VJ Swarbrick, E Wiik, ...
Freshwater Biology 64 (2), 269-283, 2019
2019
Tag: Publications
G Simpson
From the Bottom of the Heap, 2019
2019
Seasonality of pCO2 in a hard‐water lake of the northern Great Plains: The legacy effects of climate and limnological conditions over 36 years
K Finlay, RJ Vogt, GL Simpson, PR Leavitt
Limnology and Oceanography 64 (S1), S118-S129, 2019
2019
Hierarchical generalized additive models: an introduction with mgcv
EJ Pedersen, DL Miller, GL Simpson, N Ross
PeerJ Preprints 6, e27320v1, 2018
2018
Introducing gratia
G Simpson
From the Bottom of the Heap, 2018
2018
Specific Immunity to Cytomegalovirus in Pediatric Cardiac Transplantation
MC Jacobsen, MDI Manunta, ES Pincott, M Fenton, GL Simpson, NJ Klein, ...
Transplantation 102 (9), 1569-1575, 2018
2018
Regional variability in the atmospheric nitrogen deposition signal and its transfer to the sediment record in Greenland lakes
NJ Anderson, CJ Curtis, EJ Whiteford, VJ Jones, S McGowan, ...
Limnology and Oceanography 63 (5), 2250-2265, 2018
2018
Fitting GAMs with brms: part 1
G Simpson
From the Bottom of the Heap, 2018
2018
Spatial variations in snowpack chemistry and isotopic composition of nitrate along a nitrogen deposition gradient in West Greenland
CJ Curtis, J Kaiser, A Marca, NJ Anderson, G Simpson, V Jones, ...
EGU General Assembly Conference Abstracts 20, 17517, 2018
2018
Established rodent community delays recovery of dominant competitor following experimental disturbance
EM Christensen, GL Simpson, M Ernest
BioRxiv, 503078, 2018
2018
Targeting of the large-conductance, voltage and Ca2+-activated K+ (BK) channel in acute Spinal Cord Injury is neuroprotective
M Jacobsen, K Lett, JM Barden, GL Simpson, J Buttigieg
Frontiers in Neurology 9, 1107, 2018
2018
Generalized additive models of climatic and metabolic controls of sub‐annual variation in pCO2 in productive hardwater lakes
E Wiik, HA Haig, NM Hayes, K Finlay, GL Simpson, RJ Vogt, PR Leavitt
Journal of Geophysical Research: Biogeosciences 123 (3), 1940-1959, 2018
2018
First steps with MRF smooths
G Simpson
From the Bottom of the Heap, 2017
2017
Comparing smooths in factor-smooth interactions I
G Simpson
From the Bottom of the Heap, 2017
2017
Pangaea and R and open palaeo data
G Simpson
From the Bottom of the Heap, 2016
2016
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Articles 1–100