scholarly journals Competitive outcome between the rotiferBrachionus calyciflorusand the cladoceranMoina macrocopadepends on algal density but not temperature

2014 ◽  
Vol 50 (2) ◽  
pp. 109-119 ◽  
Author(s):  
Lin Huang ◽  
Yilong Xi ◽  
Xueling Wang ◽  
Mengning Xia ◽  
Ying Han ◽  
...  
Keyword(s):  
Algal Density ◽  
Competitive Outcome

Rising pCO2 interacts with algal density to reversely alter physiological responses of Gracilaria lemaneiformis and Ulva conglobata

2021 ◽  
Vol 54 ◽  
pp. 102231
Author(s):  
Gang Li ◽  
Guangming Mai ◽  
Jiejun Zhang ◽  
Guangyan Ni ◽  
Xiaohan Shi ◽  
...  
Keyword(s):  
Physiological Responses ◽  
Gracilaria Lemaneiformis ◽  
Algal Density

scholarly journals Designing Competition Policy for Telecommunications

2008 ◽  
Vol 7 (4) ◽  
Author(s):  
Glen O. Robinson ◽  
Dennis L. Weisman
Keyword(s):  
Competition Policy ◽  
Consumer Welfare ◽  
Dynamic Efficiency ◽  
Short Term ◽  
Competitive Outcome ◽  
Static Efficiency ◽  
Competitive Process ◽  
Welfare Losses ◽  
Network Sharing

This paper explores the role of the essential facilities doctrine in circumscribing the scope of network sharing obligations in telecommunications. Among other things it argues that a proper application of the doctrine of essential facilities should recognize the prominence of dynamic over static efficiency in promoting consumer welfare. Regulators may be averse to recognizing these tradeoffs because unlike the behavior of prices the welfare losses from foregone innovation may be unobservable to the regulators' constituency. Moreover, an emphasis on dynamic efficiency requires the short-term regulator to take the "long view" – fostering the competitive process rather than emulating the competitive outcome.

scholarly journals Removal of Inorganic Nutrient and Organic Carbon from Wastewater of Binh Dien Market Using Green Alga Chlorella sp

2016 ◽  
Vol 62 (4) ◽  
pp. 27-31
Author(s):  
Bui Manh Ha ◽  
Duong Thi Giang Huong ◽  
Luong Thi Hong Xuyen
Keyword(s):  
Organic Carbon ◽  
Oxygen Demand ◽  
Inorganic Nutrients ◽  
Potential Candidate ◽  
Algal Density ◽  
Wastewater Treatment Process ◽  
Traditional Markets ◽  
Chlorella Sp ◽  
Green Algal ◽  
Fresh Food

Abstract Traditional markets play a major role in socio-economics and constitutes a significant aspect of Vietnamese culture. However, wastewater streams discharged from the markets are generally characterized by a lot of inorganic nutrients and organic substances originated from fresh food processing units. They could lead to serious water contamination if discharged without proper treatment. This study applied microalgae Chlorella sp. for eliminating inorganic nutrients (NO3−-N, NH4+-N and PO43−-P) and organic carbon (Chemical oxygen demand-COD) from wastewater of the Binh Dien market. The removal efficiencies reached for NH4+-N > 86%, for NO3−-N > 72%, and for PO43−-P > 69%, respectively, at algal density of 49 × 104 cell mL−1, and for COD > 96% at algal density of 35 × 104 cell mL−1 after five cultivating days. The effluence satisfied the Vietnamese standard, column B, of the National technical regulation on industrial wastewater (QCVN 40:2011/BTNMT). The results demonstrated that the culture system composed of green algal Chlorella sp. could be a potential candidate for the removal of nutrients and organic carbon by a wastewater treatment process from the Binh Dien market.

scholarly journals A theoretical framework for multi-species range expansion in spatially heterogeneous landscapes

2021 ◽  
Author(s):  
Lukas Eigentler ◽  
Nicola R Stanley-Wall ◽  
Fordyce A Davidson
Keyword(s):  
Population Density ◽  
Range Expansion ◽  
Theoretical Framework ◽  
Dominant Mode ◽  
Bacterial Biofilm ◽  
Time Interval ◽  
Initial Population ◽  
Initial Population Density ◽  
Competitive Outcome ◽  
The Impact

Range expansion is the spatial spread of a population into previously unoccupied regions. Understanding range expansion is important for the study and successful manipulation and management of ecosystems, with applications ranging from controlling bacterial biofilm formation in industrial and medical environments to large scale conservation programmes for species undergoing climate-change induced habitat disruption. During range expansion, species typically encounter competitors. Moreover, the environment into which expansion takes place is almost always heterogeneous when considered at the scale of the individual. Despite the ubiquitous nature of these features, the impact of competition and spatial landscape heterogeneities on range expansion remains understudied. In this paper we present a theoretical framework comprising two competing generic species undergoing range expansion and use it to investigate the impact of spatial landscape heterogeneities on range expansion with a particular focus on its effect on competition dynamics. We reveal that the area covered by range expansion during a fixed time interval is highly variable due to the fixed landscape heterogeneities. Moreover, we report significant variability in competitive outcome (relative abundance of a focal species) but determine that this is induced by low initial population densities, independent of landscape heterogeneities. We further show that both area covered by range expansion and competitive outcome can be accurately predicted by a Voronoi tessellation with respect to an appropriate metric, which only requires information on the spatial landscape and the response of each species to that landscape. Finally, we reveal that if species interact antagonistically during range expansion, the dominant mode of competition depends on the initial population density. Antagonistic actions determine competitive outcome if the initial population density is high, but competition for space is the dominant mode of competition if the initial population density is low.

Algal density dependent bioconcentration factors of hydrophobic chemicals

Chemosphere ◽  
1995 ◽  
Vol 31 (9) ◽  
pp. 4001-4012 ◽  
Author(s):  
Dick T.H.M. Sijm ◽  
Joost Middelkoop ◽  
Keno Vrisekoop
Keyword(s):  
Algal Density ◽  
Bioconcentration Factors ◽  
Density Dependent

scholarly journals Inoculum volume effects on competitive outcome and wood decay rate of brown- and white-rot basidiomycetes

2020 ◽  
Vol 45 ◽  
pp. 100938
Author(s):  
Yu Fukasawa ◽  
Emma C. Gilmartin ◽  
Melanie Savoury ◽  
Lynne Boddy
Keyword(s):  
Decay Rate ◽  
Wood Decay ◽  
White Rot ◽  
Competitive Outcome ◽  
Inoculum Volume ◽  
Volume Effects

Relative size predicts competitive outcome through 2 million years

2017 ◽  
Vol 20 (8) ◽  
pp. 981-988 ◽  
Author(s):  
Lee Hsiang Liow ◽  
Emanuela Di Martino ◽  
Malgorzata Krzeminska ◽  
Mali Ramsfjell ◽  
Seabourne Rust ◽  
...  
Keyword(s):  
Relative Size ◽  
Competitive Outcome
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