Results 141 to 150 of about 89,281 (353)

Cellulase and Chitinase of Earthworms

open access: yesNature, 1951
LITTLE is known of the digestive enzymes of the earthworm. The presence of protease, amylase and lipase has been reported in the gut contents in isolated instances. Since up to 10 per cent of the top four inches of soil in grassland may pass through the intestines of worms in a year1, their digestive abilities are of a relevance to transformation of ...
openaire   +3 more sources

Ecotoxicological Evaluation of the Antimicrobial Butylparaben in Edaphic Organisms Using Multiple Biomarkers

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Butylparaben (BuP) recurrently contaminates soils worldwide, mainly by incorporating sewage sludge into cultivated areas, using wastewater in irrigation, and leaching contaminated soils. However, there are few studies on the ecotoxicological effects of this paraben on edaphic organisms.
Lorena Maihury Santos Tsubouchi   +13 more
wiley   +1 more source

Do Wolves Protect Forests? Investigating the Link Between Wolf Density, Deer Browse, and Plant Recovery. [PDF]

open access: yesEcol Evol
We planted white oak (Quercus alba), red oak (Quercus rubra), and zigzag goldenrod (Solidago flexicaulis) seedlings across a gradient of wolf density and residence time in northern Wisconsin and recorded deer browse and frequency of 11 common understory plants at each site.
Brice EM   +3 more
europepmc   +2 more sources

The free energy of biomembrane and nerve excitation and the role of anesthetics

open access: yes, 2018
In the electromechanical theory of nerve stimulation, the nerve impulse consists of a traveling region of solid membrane in a liquid environment. Therefore, the free energy necessary to stimulate a pulse is directly related to the free energy difference ...
Heimburg, Thomas   +3 more
core   +1 more source

Ecotoxicological Evaluation of Organic Sunscreens Used Worldwide, Alone and in Mixture, on Terrestrial Plants

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT The environmental hazards of sunscreens are discussed worldwide. However, there are few ecotoxicological studies on these compounds alone for edaphic organisms, and none for their mixtures. Avobenzone (1 and 10 ng/L), octocrylene (10 and 100 μg/L), and oxybenzone (2 and 20 μg/L), alone and in binary combinations (between the lowest and the ...
Diego Espirito Santo   +6 more
wiley   +1 more source

Promotion of leaf degradation by earthworms under laboratory conditions [PDF]

open access: yes, 2006
Organic materials were applied to leaves from organic apple trees. Then, leaves were fed to earthworms in a laboratory culture. The objective was to select materials which promote leaf degradation by earthworms and consequently reduce the inoculum ...
de Jager, Anton   +2 more
core  

Effect of animal waste and vegetable compost on production and growth of earthworm (Eisenia fetida) during vermiculture

open access: yesInternational Journal of Recycling of Organic Waste in Agriculture, 2016
PurposeThe purpose of the study is to evaluate the effect of different animal product wastes and plant compost on survival and growth of earthworm (Eisenia fetida).MethodsThe study is realized in a vermibin for a duration of 90 days.
D. S. J. V. Vodounnou   +4 more
semanticscholar   +1 more source

Seasonal activity changes in raccoon dogs and influences of environmental factors from autumn to winter

open access: yesWildlife Biology, EarlyView.
Raccoon dogs Nyctereutes procyonoides are on the List of National Key Protected Wild Animals as Grade II in China; research on their wild populations is limited despite their conservation significance. In this context, we focused on seasonal activity changes from autumn to winter and their relationship to environmental and mammalian factors.
Keisuke Miyamoto   +2 more
wiley   +1 more source

Complex taxonomy and global phylogeography of the well-known tropical earthworm Pontoscolex corethrurus [PDF]

open access: yes, 2018
Few earthworm species are peregrine and among them, Pontoscolex corethrurus is the most well-known. Probably native from the Guyana shield, this earthworm is nowadays distributed worldwide, in the tropical and sub-tropical zones.
Anderson, F.   +19 more
core  

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