Faculty Opinions recommendation of Light, nutrients, and food-chain length constrain planktonic energy transfer efficiency across multiple trophic levels.

2008 ◽  
Author(s):  
Robert Sterner
Keyword(s):  
Energy Transfer ◽  
Chain Length ◽  
Food Chain ◽  
Energy Transfer Efficiency ◽  
Trophic Levels ◽  
Transfer Efficiency ◽  
Food Chain Length

scholarly journals The impact of introduced Ponto-Caspian mysids (Paramysis lacustris) on the trophic position of perch (Perca fluviatilis) in European mesotrophic lakes

2019 ◽  
pp. 38
Author(s):  
Vytautas Rakauskas
Keyword(s):  
Primary Production ◽  
Chain Length ◽  
Food Chain ◽  
Trophic Position ◽  
Perca Fluviatilis ◽  
Trophic Levels ◽  
Gut Contents ◽  
Potential Predator ◽  
Food Chain Length ◽  
The Impact

Paramysis lacustris was introduced into Lithuanian lakes in the middle of the 20th century. It was assumed that P. lacustris will enhance efficiency of primary production utilization and channelling of primary production towards higher trophic levels, i.e. commercially important fish species. However, at the time of P. lacustris introduction, there were no reliable data about its trophic position in lakes. Thus, P. lacustris was considered to have no or little impact on native ecosystems. Until now, there is a gap in the knowledge of the trophic role and potential impacts of P. lacustris on local food webs in lakes. Here we investigated the impact of P. lacustris on the food chain length of its potential predator Perca fluviatilis in temperate lakes. In this study, gut contents and stable isotope analyses were performed to assess the diet and trophic position of P. lacustris and P. fluviatilis in lakes with and without invasive mysids. The results obtained revealed that P. lacustris consumes a significant amount of animal prey and occupies the third trophic level in lake littoral zones. Furthermore, our results showed that P. lacustris might enhance the food chain length for at least some zooplanktivorous fishes. Overall, the assumption that P. lacustris invasion has no whole-ecosystem consequences, as it was thought before its introduction, is not correct.

The study of intramolecular decay and intermolecular energy transfer for phosphorescent organic light-emitting devices

2021 ◽  
Vol 23 (12) ◽  
pp. 7495-7503
Author(s):  
Wanlin Cai ◽  
Kai Ren ◽  
Ancong Zhao ◽  
Xiulan Wu ◽  
Rongxing He ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Rational Design ◽  
Energy Transfer Efficiency ◽  
Transfer Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Intermolecular Energy ◽  
Intermolecular Energy Transfer ◽  
Organic Light Emitting Devices

Compared to the PtOO7-based system, the greater EQE of the PtON7-based system is mainly governed by the stronger energy transfer efficiency (ηEET); thus, it is necessary to evaluate ηEET from hosts to guests for the rational design of OLEDs.

scholarly journals Food web interactions determine energy transfer efficiency and top consumer responses to inputs of dissolved organic carbon

Hydrobiologia ◽  
2017 ◽  
Vol 805 (1) ◽  
pp. 131-146 ◽  
Author(s):  
R. Degerman ◽  
R. Lefébure ◽  
P. Byström ◽  
U. Båmstedt ◽  
S. Larsson ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Food Web ◽  
Energy Transfer Efficiency ◽  
Transfer Efficiency ◽  
Consumer Responses ◽  
Food Web Interactions

AN EXPERIMENTAL DISTURBANCE ALTERS FISH SIZE STRUCTURE BUT NOT FOOD CHAIN LENGTH IN STREAMS

Ecology ◽  
2008 ◽  
Vol 89 (12) ◽  
pp. 3261-3267 ◽  
Author(s):  
Annika W. Walters ◽  
David M. Post
Keyword(s):  
Chain Length ◽  
Food Chain ◽  
Size Structure ◽  
Fish Size ◽  
Food Chain Length ◽  
Experimental Disturbance
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