Results 21 to 30 of about 930,563 (304)

Adaptations Accumulated under Prolonged Resource Exhaustion Are Highly Transient

mSphere, 2020
Many nonsporulating bacterial species can survive for years within exhausted growth media in a state termed long-term stationary phase (LTSP). We have been carrying out evolutionary experiments aimed at elucidating the dynamics of genetic adaptation ...
Sarit Avrani, Sophia Katz, Ruth Hershberg   +2 more
doaj   +3 more sources

Research on the Evaluation of Ecological Assets Loss in Railway Construction Project Route Selection [PDF]

E3S Web of Conferences, 2020
At present, the route selection of railway construction projects from the perspective of environmental protection fails to objectively and comprehensively reflecting environmental protection requirements.
Min Liu, Huansheng Shi, Chunlei Ji, Xiaqing Chen   +3 more
doaj   +1 more source

Environmental Variation and Selection on Performance Curves [PDF]

Integrative and Comparative Biology, 2003
Many aspects of physiological and organismal performance vary with some continuous environmental variable: e.g., photosynthetic rate as a function of light intensity; growth rate or sprint speed as a function of temperature. For such 'performance curves', the environment plays two roles: it affects both the levels of performance expressed, and the ...
Joel G, Kingsolver, Richard, Gomulkiewicz   +1 more
openaire   +2 more sources

Weed Control and Winter Wheat Crop Yield With the Application of Herbicides, Nitrogen Fertilizers, and Their Mixtures With Humic Growth Regulators

Acta Agrobotanica, 2021
The aim of the present study was to determine the efficacy of the application of mixtures containing various combinations of humic substances, with herbicides and nitrogen fertilizers, in weed control and optimizing the plant nutrition system.
Irina Korotkova, Mykola Marenych, Volodymyr Hanhur, Oksana Laslo, Oksana Chetveryk, Viktor Liashenko   +5 more
doaj   +1 more source

Different Roles of Environmental Selection, Dispersal, and Drift in the Assembly of Intestinal Microbial Communities of Freshwater Fish With and Without a Stomach

Frontiers in Ecology and Evolution, 2020
The composition of intestinal microbiota commonly varies among animal hosts and may affect host health. However, we have limited knowledge about the different relative roles of assembly processes, such as drift, dispersal and environmental selection, for
Yinghua Zha, Yinghua Zha, Eva S. Lindström, Alexander Eiler, Alexander Eiler, Richard Svanbäck   +5 more
doaj   +1 more source

A new framework for selecting environmental surrogates [PDF]

Science of The Total Environment, 2015
Surrogate concepts are used in all sub-disciplines of environmental science. However, controversy remains regarding the extent to which surrogates are useful for resolving environmental problems. Here, we argue that conflicts about the utility of surrogates (and the related concepts of indicators and proxies) often reflect context-specific differences ...
Lindenmayer, David, Pierson, Jennifer, Barton, Philip, Beger, Maria, Branquinho, Cristina, Calhoun, Aram, Caro, Tim, Greig, Hamish, Gross, John, Heino, Jani, Hunter, Malcolm, Lane, Peter, Longo, Catherine, Martin, Kathy, McDowell, William H., Mellin, Camille, Salo, Hanna, Tulloch, Ayesha, Westgate, Martin   +19 more
openaire   +5 more sources

Selecting and Testing Environmental Enrichment in Lemurs [PDF]

Frontiers in Psychology, 2019
Environmental enrichment has become a standard tool for improving the welfare of animals in zoos. Two critical steps in the manipulation of environmental enrichment are (1) selection of objects/procedures and (2) evaluation of their effects. In this study, we examined the selection and evaluation of feeding enrichment for four species of lemur ...
Eduardo J. Fernandez, William Timberlake
openaire   +3 more sources

Genetic analysis of environmental variation [PDF]

, 2010
Environmental variation (V-E) in a quantitative trait - variation in phenotype that cannot be explained by genetic variation or identifiable genetic differences - can be regarded as being under some degree of genetic control. Such variation may be either
HAN A. MULDER, Hill, William G., WILLIAM G. HILL, Mulder, H.A., Mulder, Han A., Hill, W.G.   +5 more
core   +1 more source

Technique Selection of Corporation by considering the Environmental Restraints [PDF]

Water and Environmental Sustainability, 2022
: Demands of Individuals and the government for corporation environmental conservation are so stern. Corporation encounters a danger of environmental conservation. Environmental restraints contain important elements that should be regarded in corporation
Islam Abdolhakim
doaj   +1 more source

NATURAL SELECTION FOR ENVIRONMENTALLY INDUCED PHENOTYPES IN TADPOLES [PDF]

Evolution, 1997
Models suggest that phenotypic plasticity is maintained in situations where the optimal phenotype differs through time or space, so that selection acts in different directions in different environments. Some empirical work supports the general premise of this prediction because phenotypes induced by a particular environment sometimes perform better ...
Van Buskirk, Josh, McCollum, S. Andy, Werner, Earl E.   +2 more
openaire   +4 more sources