Temperature Impacts the Multiple Attack Action of Amylases

2007 ◽  
Vol 8 (3) ◽  
pp. 765-772 ◽  
Author(s):  
Annabel Bijttebier ◽  
Hans Goesaert ◽  
Jan A. Delcour
Keyword(s):  
Temperature Impacts ◽  
Multiple Attack

scholarly journals Thermal performance of fish is explained by an interplay between physiology, behaviour and ecology

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Philipp Neubauer ◽  
Ken H Andersen
Keyword(s):  
Thermal Performance ◽  
Null Model ◽  
Oxygen Limitation ◽  
Driving Mechanism ◽  
Metabolic Rates ◽  
Metabolic Scope ◽  
And Function ◽  
Temperature Impacts ◽  
Term Performance ◽  
Species Ecology

Abstract Increasing temperatures under climate change are thought to affect individual physiology of fish and other ectotherms through increases in metabolic demands, leading to changes in species performance with concomitant effects on species ecology. Although intuitively appealing, the driving mechanism behind thermal performance is contested; thermal performance (e.g. growth) appears correlated with metabolic scope (i.e. oxygen availability for activity) for a number of species, but a substantial number of datasets do not support oxygen limitation of long-term performance. Whether or not oxygen limitations via the metabolic scope, or a lack thereof, have major ecological consequences remains a highly contested question. size and trait-based model of energy and oxygen budgets to determine the relative influence of metabolic rates, oxygen limitation and environmental conditions on ectotherm performance. We show that oxygen limitation is not necessary to explain performance variation with temperature. Oxygen can drastically limit performance and fitness, especially at temperature extremes, but changes in thermal performance are primarily driven by the interplay between changing metabolic rates and species ecology. Furthermore, our model reveals that fitness trends with temperature can oppose trends in growth, suggesting a potential explanation for the paradox that species often occur at lower temperatures than their growth optimum. Our model provides a mechanistic underpinning that can provide general and realistic predictions about temperature impacts on the performance of fish and other ectotherms and function as a null model for contrasting temperature impacts on species with different metabolic and ecological traits.

Temperature impacts changes in crown buds and flowering of gentian ‘Spotlight’

2012 ◽  
Vol 143 ◽  
pp. 49-55 ◽  
Author(s):  
U.C. Samarakoon ◽  
K.A. Funnell ◽  
D.J. Woolley ◽  
E.R. Morgan
Keyword(s):  
Temperature Impacts

Climate Change-Related Temperature Impacts on Warm Season Heat Mortality: A Proof-of-Concept Methodology Using BenMAP

2011 ◽  
Vol 45 (4) ◽  
pp. 1450-1457 ◽  
Author(s):  
A. Scott Voorhees ◽  
Neal Fann ◽  
Charles Fulcher ◽  
Patrick Dolwick ◽  
Bryan Hubbell ◽  
...  
Keyword(s):  
Climate Change ◽  
Warm Season ◽  
Proof Of Concept ◽  
Temperature Impacts

scholarly journals Midlatitude land surface temperature impacts the timing and structure of glacial maxima

2017 ◽  
Vol 44 (2) ◽  
pp. 984-992 ◽  
Author(s):  
Elizabeth K. Thomas ◽  
Steven C. Clemens ◽  
Youbin Sun ◽  
Yongsong Huang ◽  
Warren Prell ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Temperature Impacts

scholarly journals Methyl Iodide Adsorption on Reduced Silver-Functionalized Silica Aerogel: How Temperature Impacts the Adsorption?

2021 ◽  
Author(s):  
Siqi Tang ◽  
Seungrag Choi ◽  
Lawrence Tavlarides
Keyword(s):  
Methyl Iodide ◽  
Photoelectron Spectroscopy ◽  
Silica Aerogel ◽  
Reaction Rate ◽  
Reaction Pathway ◽  
Effect Of Temperature ◽  
Functionalized Silica ◽  
Contributing Factors ◽  
X Ray ◽  
Temperature Impacts

To understand the effect of temperature to the adsorption, 104 ppbv and 1044 ppbv methyl iodide (CHI) adsorptions on reduced silver-functionalized silica aerogel (Ag-Aerogel) at 100, 150 and 200 ℃ were performed. In the experiments, a significantly high uptake rate (3 – 4 times higher than that at 100 and 150 ℃) was observed for the 104 ppbv adsorption at 200 ℃. To explain such behavior, a potential reaction pathway was proposed and multiple physical analyses including nitrogen titration, x-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) were performed. Based on the results, the contributing factors appear to be the formation of different Ag-I components induced by temperature, higher silver site availability, decreasing diffusion limitation, and increasing reaction rate described by the Arrhenius relationship.

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