Interaction of Man and Tropical Environments

1974 ◽  
pp. 139-182 ◽  
Author(s):  
Charles Bennett ◽  
Gerardo Budowski ◽  
Howard Daugherty ◽  
Larry Harris ◽  
John Milton ◽  
...  
Keyword(s):  
Tropical Environments

Use of Tropical Environments in Breeding for Oil Composition of Soybean Genotypes Adapted to Temperate Climates 1

Crop Science ◽  
1983 ◽  
Vol 23 (5) ◽  
pp. 897-899 ◽  
Author(s):  
S. E. Hawkins ◽  
W. R. Fehr ◽  
E. G. Hammond ◽  
S. Rodriguez de Cianzio
Keyword(s):  
Oil Composition ◽  
Tropical Environments ◽  
Soybean Genotypes ◽  
Temperate Climates

Dietary overlap and food resource partitioning among fish species of a tropical estuary in Northeastern Brazil

Gaia Scientia ◽  
2016 ◽  
Vol 10 (4) ◽  
pp. 86-95 ◽  
Author(s):  
Adna Ferreira da Silva Garcia ◽  
Ana Lúcia Vendel
Keyword(s):  
Resource Partitioning ◽  
Species Coexistence ◽  
Food Resource ◽  
River Estuary ◽  
Niche Overlap ◽  
Northeastern Brazil ◽  
Dietary Overlap ◽  
Feeding Niche ◽  
Tropical Environments ◽  
Food Resource Partitioning

The current work investigates dietary overlap and food partitioning among nine abundant carnivorous fishes caught in the shallow waters of the Paraíba do Norte river estuary, Paraíba State, Brazil. Fishes were sampled with a beach seine net between January and December 2008 and a total of 958 specimens had their stomach content analyzed. Crustacea was the dominant food resource for Lutjanus alexandrei, L. jocu and Bathygobius soporator, whereas Telostei were consumed mainly by Centropomus undecimalis and C. parallelus. In contrast, Polychaeta were preyed upon mainly by Diapterus rhombeus, Eucinostomus argenteus, Sciades herzbergii and S. parkeri. Although most species consumed similar food items, they did that in varying proportions and amounts. Overall, the niche overlap among species was low (< 0.60), but there were several cases where pair of species had their feeding niche highly overlapped (between 0.72 and 0.97). These findings corroborate the hypothesis that food resource partitioning determines species coexistence in estuarine tropical environments.

Mushroom Mycelium Regeneration in Tropical Environments

2020 ◽  
Author(s):  
Belle Sullivan ◽  
Marc Rubin ◽  
David Tauman ◽  
Asgar Ali ◽  
Khanjan Mehta
Keyword(s):  
Tropical Environments

Ambient volatile organic compounds in tropical environments: Potential sources, composition and impacts – A review

Chemosphere ◽  
2021 ◽  
pp. 131355
Author(s):  
Norfazrin Mohd Hanif ◽  
Nor Syamimi Sufiera Limi Hawari ◽  
Murnira Othman ◽  
Haris Hafizal Abd Hamid ◽  
Fatimah Ahamad ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Tropical Environments ◽  
Volatile Organic ◽  
Potential Sources

Exploring genotype‐by‐environment interaction in sweet sorghum under tropical environments

2021 ◽  
Author(s):  
Vander Fillipe Souza ◽  
Pedro César de Oliveira Ribeiro ◽  
Indalécio Cunha Vieira Júnior ◽  
Isadora Cristina Martins Oliveira ◽  
Cynthia Maria Borges Damasceno ◽  
...  
Keyword(s):  
Sweet Sorghum ◽  
Genotype By Environment Interaction ◽  
Environment Interaction ◽  
Genotype By Environment ◽  
Tropical Environments

scholarly journals Evaluating drought risk in data scarce tropical environments

2019 ◽  
Author(s):  
Alexandra Nauditt ◽  
Hamish Hann ◽  
Kerstin Stahl ◽  
Lars Ribbe
Keyword(s):  
Drought Risk ◽  
Tropical Environments

scholarly journals The formation of fire residues associated with hunter-gatherers in humid tropical environments: A geo-ethnoarchaeological perspective

2017 ◽  
Vol 171 ◽  
pp. 85-99 ◽  
Author(s):  
David E. Friesem ◽  
Noa Lavi ◽  
Marco Madella ◽  
Elisabetta Boaretto ◽  
P. Ajithparsad ◽  
...  
Keyword(s):  
Hunter Gatherers ◽  
Tropical Environments ◽  
Fire Residues

Irrigation and crop improvement in temperate and tropical environments

1986 ◽  
Vol 316 (1537) ◽  
pp. 319-330 ◽  
Keyword(s):  
Life Cycle ◽  
Low Temperatures ◽  
Energy Use ◽  
Crop Improvement ◽  
Yield Potential ◽  
Multiple Cropping ◽  
Tropical Environments ◽  
Physiological Processes ◽  
Seasonal Signals ◽  
The Tropics

There is a strong interaction between irrigation and crop improvement, irrigation creating new opportunities and challenges for plant breeders while depending on their progress for its full benefits to be realized. In temperate environments the primary emphasis is on raising yield potential, especially as irrigation enhances the use of agrichemical inputs. Efficiency of water and energy use through the modification of physiological processes and of sensitivity to stress at various stages of the life cycle is also sought. In tropical environments, breeding for greater yield potential and more comprehensive pest and disease resistance are still important. However, shortening the length of the life cycle, reducing its sensitivity to seasonal signals and increasing yield per day may be more important than raising yield per crop because of the scope for multiple cropping made possible by irrigation in the tropics in the absence of contraints by low temperatures.

scholarly journals Bioprospection and characterization of the amylolytic activity by filamentous fungi from Brazilian Atlantic Forest

2017 ◽  
Vol 17 (3) ◽  
Author(s):  
Paula Zaghetto de Almeida ◽  
Marita Gimenez Pereira ◽  
Caio Cesar de Carvalho ◽  
Paulo Ricardo Heinen ◽  
Luciana Sobrani Ziotti ◽  
...  
Keyword(s):  
Filamentous Fungi ◽  
Atlantic Forest ◽  
Rhizopus Oryzae ◽  
Residual Activity ◽  
Brazilian Atlantic Forest ◽  
Tropical Environments ◽  
Aspergillus Brasiliensis ◽  
Significant Difference ◽  
Initial Ph ◽  
Ph Range

Abstract Filamentous fungi are widely diverse and ubiquitous organisms. Such biodiversity is barely known, making room for a great potential still to be discovered, especially in tropical environments - which are favorable to growth and species variety. Filamentous fungi are extensively applied to the production of industrial enzymes, such as the amylases. This class of enzymes acts in the hydrolysis of starch to glucose or maltooligosaccharides. In this work twenty-five filamentous fungi were isolated from samples of decomposing material collected in the Brazilian Atlantic Forest. The two best amylase producers were identified as Aspergillus brasiliensis and Rhizopus oryzae. Both are mesophilic, they grow well in organic nitrogen-rich media produce great amounts of glucoamylases. The enzymes of A. brasiliensis and R. oryzae are different, possibly because of their phylogenetical distance. The best amylase production of A. brasiliensis occurred during 120 hours with initial pH of 7.5; it had a better activity in the pH range of 3.5-5.0 and at 60-75°C. Both fungal glucoamylase had wide pH stability (3-8) and were activated by Mn2+. R. oryzae best production occurred in 96 hours and at pH 6.5. Its amylases had a greater activity in the pH range of 4.0-5.5 and temperature at 50-65ºC. The most significant difference between the enzymes produced by both fungi is the resistance to thermal denaturation: A. brasiliensis glucoamylase had a T50 of 60 minutes at 70ºC. The R. oryzae glucoamylase only had a residual activity when incubated at 50°C with a 12 min T50.

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