Results 11 to 20 of about 2,656,316 (308)

Flavonoid Profiles and Antioxidant Potential of Monochoria angustifolia (G. X. Wang) Boonkerd & Tungmunnithum, a New Species from the Genus Monochoria C. Presl

open access: yesAntioxidants, 2022
Plants of the genus Monochoria have long been utilized in food, cosmetics, and traditional herbal treatments. Thailand has the highest species diversity of this genus and a new member, Monochoria angustifolia (G. X.
Duangjai Tungmunnithum   +4 more
doaj   +1 more source

Technologically modified genes in natural populations [PDF]

open access: yes, 1993
Current theories of evolutionary and ecological genetics cannot be used for general statements on risk assessment of gene technology. In a simplifying model, the genes which are transferred from artificial populations are treated like mutations in the ...
Gabriel, Wilfried, Wöhrmann, Klaus
core   +1 more source

Selection in Nature: Experimental Manipulations of Natural Populations [PDF]

open access: yesIntegrative and Comparative Biology, 2005
Numerous studies have documented evolution by natural selection in natural populations, but few are genuine selection experiments that are designed and then executed in nature. We will focus on these few cases to illustrate what can be learned from field selection experiments alone or field and laboratory selection experiments together that cannot be ...
David N, Reznick, Cameron K, Ghalambor
openaire   +2 more sources

Experimental evolution reveals high insecticide tolerance in Daphnia inhabiting farmland ponds [PDF]

open access: yes, 2015
Exposure of nontarget populations to agricultural chemicals is an important aspect of global change. We quantified the capacity of natural Daphnia magna populations to locally adapt to insecticide exposure through a selection experiment involving ...
Agra   +36 more
core   +2 more sources

Evolutionary plant breeding for low input systems [PDF]

open access: yes, 2005
Heritable variation is at the heart of the process of evolution. However, variation is restricted in breeding for uniform crop populations using the pedigree line approach. Pedigree lines are successful in agriculture because synthetic inputs are used to
Phillips, Scott, Wolfe, Martin
core   +1 more source

The limits of mean-field heterozygosity estimates under spatial extension in simulated plant populations [PDF]

open access: yes, 2012
Computational models of evolutionary processes are increasingly required to incorporate multiple and diverse sources of data. A popular feature to include in population genetics models is spatial extension, which reflects more accurately natural ...
Allaby, Robin G., Kitchen, James
core   +2 more sources

Nest and brood survival of Ring-necked Ducks in relation to anthropogenic development and wetland attributes

open access: yesAvian Conservation and Ecology, 2018
The boreal and hemiboreal forests are facing increasing anthropogenic development in areas that have traditionally been remote and inaccessible. Although these forests are recognized as important to breeding waterfowl, breeding season vital rates and the
Charlotte L. Roy
doaj   +1 more source

Natural Enemies of Alfalfa Weevil, \u3ci\u3eHypera Postica\u3c/i\u3e (Coleoptera: Curculionidae), in Minnesota [PDF]

open access: yes, 2017
Alfalfa weevil, Hypera postica, is present throughout Minnesota. How- ever, economically damaging populations seldom occur, due to a combination of natural enemies and adverse climatic conditions.
Flanders, Kathy L   +2 more
core   +2 more sources

LIVING ON THE EDGE: WINTER DIET SELECTION AND BODY CONDITION OF WILD TURKEYS IN NORTHERN MINNESOTA

open access: yesWildlife Society Bulletin, 2010
: The eastern wild turkey (Meleagris gallopavo silvestris) has been introduced into areas outside its historic northern range. Agricultural foods are believed to be an important factor contributing to its survival and range expansion in these northern ...
Eric M. Dunton   +2 more
doaj   +1 more source

Trends in eggshell thickness and mercury in common goldeneye and hooded merganser eggs

open access: yesWildlife Society Bulletin, 2014
Environmental contaminants such as dichloro diphenyl trichloroethane (DDT), polychlorinated biphenyls (PCBs), and mercury are associated with physiological problems in wildlife.
David P. Rave   +4 more
doaj   +1 more source

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