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Showing 1 to 12 of 19 entries
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Citizen science shows systematic changes in the temperature difference between air and inland waters with global warming.

Scientific reports

Weyhenmeyer GA, Mackay M, Stockwell JD, Thiery W, Grossart HP, Augusto-Silva PB, Baulch HM, de Eyto E, Hejzlar J, Kangur K, Kirillin G, Pierson DC, Rusak JA, Sadro S, Woolway RI.
PMID: 28262715
Sci Rep. 2017 Mar 06;7:43890. doi: 10.1038/srep43890.

Citizen science projects have a long history in ecological studies. The research usefulness of such projects is dependent on applying simple and standardized methods. Here, we conducted a citizen science project that involved more than 3500 Swedish high school...

A global database of lake surface temperatures collected by in situ and satellite methods from 1985-2009.

Scientific data

Sharma S, Gray DK, Read JS, O'Reilly CM, Schneider P, Qudrat A, Gries C, Stefanoff S, Hampton SE, Hook S, Lenters JD, Livingstone DM, McIntyre PB, Adrian R, Allan MG, Anneville O, Arvola L, Austin J, Bailey J, Baron JS, Brookes J, Chen Y, Daly R, Dokulil M, Dong B, Ewing K, de Eyto E, Hamilton D, Havens K, Haydon S, Hetzenauer H, Heneberry J, Hetherington AL, Higgins SN, Hixson E, Izmest'eva LR, Jones BM, Kangur K, Kasprzak P, Köster O, Kraemer BM, Kumagai M, Kuusisto E, Leshkevich G, May L, MacIntyre S, Müller-Navarra D, Naumenko M, Noges P, Noges T, Niederhauser P, North RP, Paterson AM, Plisnier PD, Rigosi A, Rimmer A, Rogora M, Rudstam L, Rusak JA, Salmaso N, Samal NR, Schindler DE, Schladow G, Schmidt SR, Schultz T, Silow EA, Straile D, Teubner K, Verburg P, Voutilainen A, Watkinson A, Weyhenmeyer GA, Williamson CE, Woo KH.
PMID: 25977814
Sci Data. 2015 Mar 17;2:150008. doi: 10.1038/sdata.2015.8. eCollection 2015.

Global environmental change has influenced lake surface temperatures, a key driver of ecosystem structure and function. Recent studies have suggested significant warming of water temperatures in individual lakes across many different regions around the world. However, the spatial and...

Angiotensin type 1 receptor antagonist losartan, reduces MPTP-induced degeneration of dopaminergic neurons in substantia nigra.

Molecular neurodegeneration

Grammatopoulos TN, Jones SM, Ahmadi FA, Hoover BR, Snell LD, Skoch J, Jhaveri VV, Poczobutt AM, Weyhenmeyer JA, Zawada WM.
PMID: 17224059
Mol Neurodegener. 2007 Jan 15;2:1. doi: 10.1186/1750-1326-2-1.

BACKGROUND: Recent attention has focused on understanding the role of the brain-renin-angiotensin-system (RAS) in stroke and neurodegenerative diseases. Direct evidence of a role for the brain-RAS in Parkinson's disease (PD) comes from studies demonstrating the neuroprotective effect of RAS...

Widespread diminishing anthropogenic effects on calcium in freshwaters.

Scientific reports

Weyhenmeyer GA, Hartmann J, Hessen DO, Kopáček J, Hejzlar J, Jacquet S, Hamilton SK, Verburg P, Leach TH, Schmid M, Flaim G, Nõges T, Nõges P, Wentzky VC, Rogora M, Rusak JA, Kosten S, Paterson AM, Teubner K, Higgins SN, Lawrence G, Kangur K, Kokorite I, Cerasino L, Funk C, Harvey R, Moatar F, de Wit HA, Zechmeister T.
PMID: 31320731
Sci Rep. 2019 Jul 18;9(1):10450. doi: 10.1038/s41598-019-46838-w.

Calcium (Ca) is an essential element for almost all living organisms. Here, we examined global variation and controls of freshwater Ca concentrations, using 440 599 water samples from 43 184 inland water sites in 57 countries. We found that...

Global data set of long-term summertime vertical temperature profiles in 153 lakes.

Scientific data

Pilla RM, Mette EM, Williamson CE, Adamovich BV, Adrian R, Anneville O, Balseiro E, Ban S, Chandra S, Colom-Montero W, Devlin SP, Dix MA, Dokulil MT, Feldsine NA, Feuchtmayr H, Fogarty NK, Gaiser EE, Girdner SF, González MJ, Hambright KD, Hamilton DP, Havens K, Hessen DO, Hetzenauer H, Higgins SN, Huttula TH, Huuskonen H, Isles PDF, Joehnk KD, Keller WB, Klug J, Knoll LB, Korhonen J, Korovchinsky NM, Köster O, Kraemer BM, Leavitt PR, Leoni B, Lepori F, Lepskaya EV, Lottig NR, Luger MS, Maberly SC, MacIntyre S, McBride C, McIntyre P, Melles SJ, Modenutti B, Müller-Navarra DC, Pacholski L, Paterson AM, Pierson DC, Pislegina HV, Plisnier PD, Richardson DC, Rimmer A, Rogora M, Rogozin DY, Rusak JA, Rusanovskaya OO, Sadro S, Salmaso N, Saros JE, Sarvala J, Saulnier-Talbot É, Schindler DE, Shimaraeva SV, Silow EA, Sitoki LM, Sommaruga R, Straile D, Strock KE, Swain H, Tallant JM, Thiery W, Timofeyev MA, Tolomeev AP, Tominaga K, Vanni MJ, Verburg P, Vinebrooke RD, Wanzenböck J, Weathers K, Weyhenmeyer GA, Zadereev ES, Zhukova TV.
PMID: 34349102
Sci Data. 2021 Aug 04;8(1):200. doi: 10.1038/s41597-021-00983-y.

Climate change and other anthropogenic stressors have led to long-term changes in the thermal structure, including surface temperatures, deepwater temperatures, and vertical thermal gradients, in many lakes around the world. Though many studies highlight warming of surface water temperatures...

Warmer and browner waters decrease fish biomass production.

Global change biology

van Dorst RM, Gårdmark A, Svanbäck R, Beier U, Weyhenmeyer GA, Huss M.
PMID: 30570185
Glob Chang Biol. 2018 Dec 20; doi: 10.1111/gcb.14551. Epub 2018 Dec 20.

Climate change studies have long focused on effects of increasing temperatures, often without considering other simultaneously occurring environmental changes, such as browning of waters. Resolving how the combination of warming and browning of aquatic ecosystems affects fish biomass production...

Simultaneous explantation and implantation of intrathecal pumps: a case series.

Journal of neurosurgery

Leibold AT, Weyhenmeyer J, Lee A.
PMID: 30978693
J Neurosurg. 2019 Apr 12;132(5):1398-1404. doi: 10.3171/2019.1.JNS18919.

OBJECTIVE: Intrathecal drug delivery devices (IDDDs) are a mainstay in the treatment of spasticity and refractory pain. While these devices have been shown to greatly improve the quality of life for patients, they also have a high perioperative complication...

Lakes as sentinels of climate change.

Limnology and oceanography

Adrian R, O'Reilly CM, Zagarese H, Baines SB, Hessen DO, Keller W, Livingstone DM, Sommaruga R, Straile D, Van Donk E, Weyhenmeyer GA, Winder M.
PMID: 20396409
Limnol Oceanogr. 2009 Nov;54(6):2283-2297. doi: 10.4319/lo.2009.54.6_part_2.2283.

While there is a general sense that lakes can act as sentinels of climate change, their efficacy has not been thoroughly analyzed. We identified the key response variables within a lake that act as indicators of the effects of...

Discovering independent parameters in complex dynamical systems.

Chaos, solitons, and fractals

Lainscsek C, Weyhenmeyer J, Sejnowski TJ, Letellier C.
PMID: 25983399
Chaos Solitons Fractals. 2015 Jul;76:182-189. doi: 10.1016/j.chaos.2015.04.001.

The transformation of a nonlinear dynamical system into a standard form by using one of its variables and its successive derivatives can be used to identify the relationships that may exist between the parameters of the original system such...

Biosynthesis of 5, 6-dimethylbenzimidazole from riboflavin Transformation of C-1' of riboflavin into C-2 of 5, 6-dimethylbenzimidazole.

FEBS letters

Renz P, Weyhenmeyer R.
PMID: 11946578
FEBS Lett. 1972 Apr 15;22(1):124-126. doi: 10.1016/0014-5793(72)80236-9.

No abstract available.

Non-linear dynamical classification of short time series of the rössler system in high noise regimes.

Frontiers in neurology

Lainscsek C, Weyhenmeyer J, Hernandez ME, Poizner H, Sejnowski TJ.
PMID: 24379798
Front Neurol. 2013 Nov 12;4:182. doi: 10.3389/fneur.2013.00182. eCollection 2013.

Time series analysis with delay differential equations (DDEs) reveals non-linear properties of the underlying dynamical system and can serve as a non-linear time-domain classification tool. Here global DDE models were used to analyze short segments of simulated time series...

Disruptions and re-establishment of the calcium-bicarbonate equilibrium in freshwaters.

The Science of the total environment

Kopáček J, Hejzlar J, Oulehle F, Porcal P, Weyhenmeyer GA, Norton SA.
PMID: 32652359
Sci Total Environ. 2020 Nov 15;743:140626. doi: 10.1016/j.scitotenv.2020.140626. Epub 2020 Jul 04.

During recent decades, increasing anthropogenic activities have affected natural ionic composition, including the strongest and most common relationship between ionic concentrations in the majority of natural global freshwaters, i.e., the Ca

Showing 1 to 12 of 19 entries