Results 251 to 260 of about 350,727 (285)

Atmosphere-soil mercury distribution: The biotic factor

Water, Air, and Soil Pollution, 1980
Relative to volcanic sites in Iceland and Hawaii the Hg distribution ratio soil: air around Mt. Erebus (Ross Island, U.S. Antarctica) is anomously low. Air values for all three areas are similar. Differences are a reflection of extremely low soil levels at Antarctic sample sites.
S. M. Siegel, B. Z. Siegel, G. McMurtry
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Biotic and abiotic factors influence horseweed emergence

Weed Science, 2006
Abstract Factors affecting horseweed emergence are important for management of this weed species, particularly because of the presence of herbicide-resistant biotypes. Horseweed emergence was highly variable and not strongly correlated to soil temperature (r2 = 0.21), air temperature (r2 = 0.45) or rainfall (r2 = 0.32).
Christopher L. Main, Lawrence E. Steckel, Robert M. Hayes, Thomas C. Mueller   +3 more
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Biotic Factor of System Genesis

1980
Planet Earth houses millions of species of plants and animals and all may perform as biotic factors.
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Control of Weeds and Other Biotic Factors

2016
Weeds are plants whose presence is undesirable at a time and/or place because they compete with crops for resources, deteriorate the quality of the harvested product and can hinder harvesting. The most important weed species include C4 perennials with vegetative propagation.
Francisco J. Villalobos, Luciano Mateos, Elias Fereres   +2 more
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An Exceptionally Powerful Biotic Factor

1993
The questions raised by the relationship between humans and their physical environment are as old as western thought. As Glacken (1967) has pointed out, people throughout the ages have persistently asked three broad questions: 1) Is the Earth a purposely made creation, or, put another way, is it a divinely designed Earth for humans? 2)
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Biotic–Abiotic Interactions: Factors that Influence Peptide–Graphene Interactions

ACS Applied Materials & Interfaces, 2015
Understanding the factors that influence the interaction between biomolecules and abiotic surfaces is of utmost interest in biosensing and biomedical research. Through phage display technology, several peptides have been identified as specific binders to abiotic material surfaces, such as gold, graphene, silver, and so forth.
Steve S, Kim, Zhifeng, Kuang, Yen H, Ngo, Barry L, Farmer, Rajesh R, Naik   +4 more
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Biotic factors that induce the tomato Ve1 R-gene

Plant Science, 2017
In tomato, Verticillium resistance is determined by the Ve gene locus encoding two leucine-rich repeat-receptor-like proteins (Ve1, Ve2). The resistance function usually is attributed to Ve1 alone, with two known alleles: Ve1, encoding a resistance protein, and ve1, with a premature stop codon encoding a truncated product.
Christian Danve, Castroverde, Xin, Xu, Ross N, Nazar, Jane, Robb   +3 more
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Nod factor perception protein carries weight in biotic interactions

Trends in Plant Science, 2013
Plant plasma membrane-bound receptors with extracellular lysin motif (LysM) domains participate in interactions with microorganisms. In Medicago truncatula, the LysM receptor-like kinase gene nodulation (Nod) factor perception (NFP) is a key gene that controls the perception of rhizobial lipochitooligosaccharide (LCO) Nod factors for the establishment ...
Gough, Clare, Jacquet, Christophe
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Antioxidant Defenses in Fish: Biotic and Abiotic Factors

Reviews in Fish Biology and Fisheries, 2005
Oxygen in its molecular state O2, is essential for many metabolic processes that are vital to aerobic life. Aerobic organisms cannot exist without oxygen, which nevertheless is inherently dangerous to their lives. Like all aerobic organisms, fish are also susceptible to the effects of reactive oxygen and have inherent and effective antioxidant defenses
Rosa M. Martínez-Álvarez, Amalia E. Morales, Ana Sanz   +2 more
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Biotic Factors in the Alpine Zone

1967
Animals as well as plants are subjected to the peculiarities of a high altitude climate on Mount Kenya, just as they are on all the other tropical mountains of the world. However, unlike the plants, they are able to remain in a niche wherein they are protected from the environmental extremes to which the vegetation is exposed.
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