TY  - JOUR
A1  - Weyhenmeyer, Gesa A.
A1  - Mackay, Murray
A1  - Stockwell, Jason D.
A1  - Thiery, Wim
A1  - Grossart, Hans-Peter
A1  - Augusto-Silva, Petala B.
A1  - Baulch, Helen M.
A1  - de Eyto, Elvira
A1  - Hejzlar, Josef
A1  - Kangur, Kuelli
A1  - Kirillin, Georgiy
A1  - Pierson, Don C.
A1  - Rusak, James A.
A1  - Sadro, Steven
A1  - Woolway, R. Iestyn
T1  - Citizen science shows systematic changes in the temperature difference between air and inland waters with global warming
JF  - Scientific reports
N2  - 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 students to examine the temperature difference between surface water and the overlying air (T-w-T-a) as a proxy for sensible heat flux (Q(H)). If Q(H) is directed upward, corresponding to positive T-w-T-a, it can enhance CO2 and CH4 emissions from inland waters, thereby contributing to increased greenhouse gas concentrations in the atmosphere. The students found mostly negative T-w-T-a across small ponds, lakes, streams/rivers and the sea shore (i.e. downward Q(H)), with T-w-T-a becoming increasingly negative with increasing T-a. Further examination of T-w-T-a using high-frequency temperature data from inland waters across the globe confirmed that T-w-T-a is linearly related to T-a. Using the longest available high-frequency temperature time series from Lake Erken, Sweden, we found a rapid increase in the occasions of negative T-w-T-a with increasing annual mean T-a since 1989. From these results, we can expect that ongoing and projected global warming will result in increasingly negative T-w-T-a, thereby reducing CO2 and CH4 transfer velocities from inland waters into the atmosphere.
Y1  - 2017
U6  - https://doi.org/10.1038/srep43890
SN  - 2045-2322
VL  - 7
PB  - Nature Publ. Group
CY  - London
ER  - 
TY  - JOUR
A1  - Marce, Rafael
A1  - George, Glen
A1  - Buscarinu, Paola
A1  - Deidda, Melania
A1  - Dunalska, Julita
A1  - de Eyto, Elvira
A1  - Flaim, Giovanna
A1  - Grossart, Hans-Peter
A1  - Istvanovics, Vera
A1  - Lenhardt, Mirjana
A1  - Moreno-Ostos, Enrique
A1  - Obrador, Biel
A1  - Ostrovsky, Ilia
A1  - Pierson, Donald C.
A1  - Potuzak, Jan
A1  - Poikane, Sandra
A1  - Rinke, Karsten
A1  - Rodriguez-Mozaz, Sara
A1  - Staehr, Peter A.
A1  - Sumberova, Katerina
A1  - Waajen, Guido
A1  - Weyhenmeyer, Gesa A.
A1  - Weathers, Kathleen C.
A1  - Zion, Mark
A1  - Ibelings, Bas W.
A1  - Jennings, Eleanor
T1  - Automatic High Frequency Monitoring for Improved Lake and Reservoir Management
JF  - Frontiers in plant science
N2  - Recent technological developments have increased the number of variables being monitored in lakes and reservoirs using automatic high frequency monitoring (AHFM). However, design of AHFM systems and posterior data handling and interpretation are currently being developed on a site-by-site and issue-by-issue basis with minimal standardization of protocols or knowledge sharing. As a result, many deployments become short-lived or underutilized, and many new scientific developments that are potentially useful for water management and environmental legislation remain underexplored. This Critical Review bridges scientific uses of AHFM with their applications by providing an overview of the current AHFM capabilities, together with examples of successful applications. We review the use of AHFM for maximizing the provision of ecosystem services supplied, by lakes and reservoirs (consumptive and non consumptive uses, food production, and recreation), and for reporting lake status in the EU Water Framework Directive. We also highlight critical issues to enhance the application of AHFM, and suggest the establishment of appropriate networks to facilitate knowledge sharing and technological transfer between potential users. Finally, we give advice on how modern sensor technology can successfully be applied on a larger scale to the management of lakes and reservoirs and maximize the ecosystem services they provide.
Y1  - 2016
U6  - https://doi.org/10.1021/acs.est.6b01604
SN  - 0013-936X
SN  - 1520-5851
VL  - 50
SP  - 10780
EP  - 10794
PB  - American Chemical Society
CY  - Washington
ER  - 
TY  - JOUR
A1  - Mantzouki, Evanthia
A1  - Beklioglu, Meryem
A1  - Brookes, Justin D.
A1  - Domis, Lisette Nicole de Senerpont
A1  - Dugan, Hilary A.
A1  - Doubek, Jonathan P.
A1  - Grossart, Hans-Peter
A1  - Nejstgaard, Jens C.
A1  - Pollard, Amina I.
A1  - Ptacnik, Robert
A1  - Rose, Kevin C.
A1  - Sadro, Steven
A1  - Seelen, Laura
A1  - Skaff, Nicholas K.
A1  - Teubner, Katrin
A1  - Weyhenmeyer, Gesa A.
A1  - Ibelings, Bastiaan W.
T1  - Snapshot surveys for lake monitoring, more than a shot in the dark
JF  - Frontiers in Ecology and Evolution
KW  - multi-lake snapshot surveys
KW  - lake monitoring
KW  - Nyquist-shannon sampling theorem
KW  - space-for-time substitution
KW  - phytoplankton ecology
Y1  - 2018
U6  - https://doi.org/10.3389/fevo.2018.00201
SN  - 2296-701X
VL  - 6
PB  - Frontiers Research Foundation
CY  - Lausanne
ER  - 
TY  - JOUR
A1  - Block, Benjamin D.
A1  - Denfeld, Blaize A.
A1  - Stockwell, Jason D.
A1  - Flaim, Giovanna
A1  - Grossart, Hans-Peter
A1  - Knoll, Lesley B.
A1  - Maier, Dominique B.
A1  - North, Rebecca L.
A1  - Rautio, Milla
A1  - Rusak, James A.
A1  - Sadro, Steve
A1  - Weyhenmeyer, Gesa A.
A1  - Bramburger, Andrew J.
A1  - Branstrator, Donn K.
A1  - Salonen, Kalevi
A1  - Hampton, Stephanie E.
T1  - The unique methodological challenges of winter limnology
JF  - Limnology and Oceanography: Methods
N2  - Winter is an important season for many limnological processes, which can range from biogeochemical transformations to ecological interactions. Interest in the structure and function of lake ecosystems under ice is on the rise. Although limnologists working at polar latitudes have a long history of winter work, the required knowledge to successfully sample under winter conditions is not widely available and relatively few limnologists receive formal training. In particular, the deployment and operation of equipment in below 0 degrees C temperatures pose considerable logistical and methodological challenges, as do the safety risks of sampling during the ice-covered period. Here, we consolidate information on winter lake sampling and describe effective methods to measure physical, chemical, and biological variables in and under ice. We describe variation in snow and ice conditions and discuss implications for sampling logistics and safety. We outline commonly encountered methodological challenges and make recommendations for best practices to maximize safety and efficiency when sampling through ice or deploying instruments in ice-covered lakes. Application of such practices over a broad range of ice-covered lakes will contribute to a better understanding of the factors that regulate lakes during winter and how winter conditions affect the subsequent ice-free period.
Y1  - 2018
U6  - https://doi.org/10.1002/lom3.10295
SN  - 1541-5856
VL  - 17
IS  - 1
SP  - 42
EP  - 57
PB  - Wiley
CY  - Hoboken
ER  -