scholarly journals Species richness and evolutionary speed: the influence of temperature, water and area

2013 ◽  
Vol 41 (1) ◽  
pp. 39-51 ◽  
Author(s):  
Len N. Gillman ◽  
Shane D. Wright
Keyword(s):  
Species Richness ◽  
Influence Of Temperature ◽  
Evolutionary Speed ◽  
Temperature Water

Influence of Temperature and Relative Humidity on Perm-Selectivity of PET Packaging Film

2011 ◽  
Vol 295-297 ◽  
pp. 1206-1210
Author(s):  
Yan Feng Guo ◽  
Xian Ping Ma ◽  
Yu Yan ◽  
Yun Gang Fu
Keyword(s):  
Water Vapor ◽  
Relative Humidity ◽  
Experimental Studies ◽  
Thermodynamic Temperature ◽  
Packaging Film ◽  
Influence Of Temperature ◽  
Carbon Dioxide Gas ◽  
Pet Film ◽  
Pet Films ◽  
Temperature Water

The main feature of this article is the investigation on the influence of temperature, relative humidity, film thickness on permeability of PET packaging film, the analysis of perm-selectivity of the packaging films for oxygen gas and carbon dioxide gas, and the evaluation on experimental formulas of water vapor, O2 and CO2 gas permeating rates on the basis of gas molecular osmotic reaction kinetics and regression analysis. The comparison between experimental studies and calculation indicates that: (1) with increment of ambient temperature water vapor, O2 and CO2 permeating rate of PET films and PET/Al film also rise, and the logarithm of water vapor, O2 and CO2 gas permeating rates has linear relation with the reciprocal of thermodynamic temperature, and (2) the influence of relative humidity on water vapor permeating rate of PET film with thickness 12µm is the least, and that of PET film with thickness 20µm and PET/Al film with thickness 18µm is a little obvious. (3) The PET films hold remarkable perm-selectivity for O2 and CO2 gas, and CO2 gas permeating rate is about two times of O2 gas, yet O2 and CO2 gas permeating rates of PET/Al film are both very low and have small difference, so the PET/Al film has better barrier performance than the PET film.

Composition and spatio-temporal variation in the density of the Brachyura (Decapoda, Pleocyemata) in the rocky substrates of an Amazonian estuary

Crustaceana ◽  
2016 ◽  
Vol 89 (13) ◽  
pp. 1447-1466 ◽  
Author(s):  
Priscila S. V. Nóbrega ◽  
Jussara M. Martinelli-Lemos
Keyword(s):  
Species Richness ◽  
Species Composition ◽  
Rainy Season ◽  
Multivariate Analyses ◽  
Temporal Distribution ◽  
Homogeneous Distribution ◽  
Influence Of Temperature ◽  
Spatio Temporal ◽  
Outer Estuary ◽  
Saline Zone

The present study investigated the composition, spatio-temporal distribution, and the influence of temperature and salinity on the density of brachyurans associated with rocky substrates in an estuary of the Brazilian Amazonian coast. Specimens were collected monthly at four sites representing the two margins (profiles), zones (inner and outer estuary) and the lower and upper mediolittoral portions at each site of the Marapanim estuary. A total of 14 species were collected and multivariate analyses revealed that the species composition varied systematically between zones, margins, mediolittoral sectors and seasons, with the more saline zone, the most eroded margin, the lower mediolittoral, and the rainy season all being characterized by higher densities and a more homogeneous distribution of species. In general, high densities of brachyurans, but low species richness, and marked dominance characterized the sites. Salinity proved to play an important role in the structuring of the community.

Influence of temperature, water content and type of organic acid on the formation, stability and properties of functional natural deep eutectic solvents

2019 ◽  
Vol 488 ◽  
pp. 40-47 ◽  
Author(s):  
Lizandra Kamradt Savi ◽  
Danielle Carpiné ◽  
Nina Waszczynskyj ◽  
Rosemary Hoffmann Ribani ◽  
Charles Windson Isidoro Haminiuk
Keyword(s):  
Organic Acid ◽  
Water Content ◽  
Deep Eutectic Solvents ◽  
Influence Of Temperature ◽  
Natural Deep Eutectic Solvents ◽  
Temperature Water

scholarly journals Pattern of distribution and environmental influences on the Scienidae community of the Southeastern Brazilian coast

2012 ◽  
Vol 60 (2) ◽  
pp. 233-243 ◽  
Author(s):  
Thassya Christina dos Santos Schmidt ◽  
June Ferraz Dias
Keyword(s):  
Species Richness ◽  
Temporal Distribution ◽  
The Other ◽  
Brazilian Coast ◽  
Spatial And Temporal Distribution ◽  
East Side ◽  
Influence Of Temperature ◽  
Factors Influencing ◽  
Numerical Abundance ◽  
Total Composition

The Sciaenids have among the highest species richness, numerical abundance and biomass of any family of fishes along the Brazilian coast. The aim of this study was to analyze the composition and spatial and temporal distribution of as well as the influence of temperature, salinity and depth on the sciaenid assemblage of Santos Bay. A total of 29,306 individuals belonging to 13 genera and 21 species were captured, between November 2004 and December 2005, with Stellifer rastrifer representing 70.4% of the total composition. Highest abundance and biomass occurred on the east side of the bay, and the highest species richness occurred near the mouth of the Santos Channel, which was also the site with least similarity to the other sites. Highest abundances occurred in April 2005 and lowest in September 2005. Key environmental factors influencing distribution of sciaenids were depth and temperature.

Influence of Temperature, Water Content and C/N Ratio on the Aerobic Fermentation Rate of Woody Biomass

2017 ◽  
Vol 43 (4) ◽  
pp. 231-237
Author(s):  
Nobuhide Takahashi ◽  
Shun Mochizuki ◽  
Kento Masuda ◽  
Iori Shimada ◽  
Mitsumasa Osada ◽  
...  
Keyword(s):  
Water Content ◽  
Woody Biomass ◽  
Aerobic Fermentation ◽  
Influence Of Temperature ◽  
Fermentation Rate ◽  
Temperature Water

Modelling the influence of temperature, water activity and sodium metabisulphite on the growth and OTA production of Aspergillus carbonarius isolated from Greek wine grapes

2015 ◽  
Vol 49 ◽  
pp. 12-22 ◽  
Author(s):  
Angelos-Gerasimos Ioannidis ◽  
Efstathia A. Kogkaki ◽  
Pantelis I. Natskoulis ◽  
George-John E. Nychas ◽  
Efstathios Z. Panagou
Keyword(s):  
Water Activity ◽  
Aspergillus Carbonarius ◽  
Wine Grapes ◽  
Influence Of Temperature ◽  
Sodium Metabisulphite ◽  
Temperature Water

scholarly journals As variações na comunidade de Odonata (Insecta) em córregos podem ser explicadas pelo Paradoxo do Plâncton? Explicando a riqueza de espécies pela variabilidade ambiental

2013 ◽  
Vol 6 (1) ◽  
pp. 01-08 ◽  
Author(s):  
José Max Barbosa Oliveira Junior ◽  
Helena Soares Ramos Cabette ◽  
Nelson Silva Pinto ◽  
Leandro Juen
Keyword(s):  
Species Richness ◽  
Environmental Variables ◽  
Environmental Variability ◽  
Size Variation ◽  
Amazon Forest ◽  
Mato Grosso ◽  
East Central ◽  
Environmental Integrity ◽  
Range Of Variation ◽  
Temperature Water

A teoria do Paradoxo do Plâncton postula que ambientes que apresentam flutuações temporais periódicas apresentariam alta diversidade de espécie, uma vez que essas flutuações impediriam a ocorrência da exclusão competitiva. Este trabalho teve como objetivo avaliar a variação da comunidade de Odonata adulto na Bacia do Rio Suiá-Miçú, testando a hipótese de que locais que apresentam variáveis ambientais com maiores amplitudes de variação possuiriam maiores riquezas de espécies. Foram amostrados 11 corpos d´água, em uma área de transição Cerrado-Floresta Amazônica na região centro-leste do estado de Mato Grosso, Brasil. As variáveis ambientais avaliadas foram integridade ambiental (HII) e amplitude de variação do pH, condutividade, temperatura do ar, temperatura da água, oxigênio dissolvido, amônia, fósforo e Mg+. Foram coletados 2.144 espécimes, distribuídos em oito famílias, 41 gêneros e 78 espécies. Nossa hipótese não foi corroborada, uma vez que a regressão múltipla entre a riqueza estimada de espécie de Anisoptera e Zygoptera e a amplitude de variação dos fatores físico-químicos não foi significativa para nenhuma das variáveis analisadas, assim como para o HII. Nossos resultados sugerem que as variações na comunidade de Odonata em córregos não podem ser explicadas pelo Paradoxo do Plâncton. Acreditamos que este resultado pode ter ocorrido principalmente devido às baixas variações nas condições ambientais analisadas, ação de outros processos locais, como a competição e predação, ou por diferenças ecofisiológicas, resultado da variação de tamanho corporal e da capacidade de termorregulação dos adultos na ordem estudada. Variations in Odonata (Insecta) Community in Streams may be Predicted by the Plankton Paradox? Explaining Species Richness by Environmental Variability Abstract. The theory of Plankton Paradox postulates that environments that exhibit regular temporal fluctuations would present a high diversity of species, since such fluctuations would prevent the occurrence of competitive exclusion. This work aimed evaluate variations in adult Odonata community in catchment of River Suiá-Miçú, testing the hypothesis that sites with environmental variables with the largest amplitude of variation would present the highest species richness. Were sampled 11 water bodies in an area of transition Cerrado-Amazon Forest in east-central Mato Grosso state, Brazil. Environmental variables evaluated were: environmental integrity (HII) and range of variation of pH, conductivity, air temperature, water temperature, dissolved oxygen, ammonia, phosphorus and Mg+. Were collected 2.144 specimens, distributed in eight families, 41 genera and 78 species. Our hypothesis was not confirmed, since the multiple regression analysis performed between the estimated kind of richness Anisoptera and Zygoptera with range of variation of physical-chemical was not significant for any of the eight variables, as well as for HII. Our results suggest that variations in the community of Odonata in streams cannot be explained by Plankton Paradox. We believe that this result may have occurred due mainly to the low variations in environmental conditions discussed, action of other local processes such as competition and predation or differences ecophysiological result of body size variation and capacity of thermoregulation in the order of the adults studied.

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