Observations on the effect of hexoestrol on earthworms and other soil invertebrates

1960 ◽  
Vol 55 (2) ◽  
pp. 189-190 ◽  
Author(s):  
F. Raw
Keyword(s):  
Aqueous Solution ◽  
Soil Fauna ◽  
Lumbricus Terrestris ◽  
Soil Invertebrates ◽  
Saturated Aqueous Solution ◽  
Egg Capsules ◽  
Allolobophora Caliginosa

1. Activity of Lumbricus terrestris, Allolobophora caliginosa and A. chlorotica was unaffected by 15 mg. hexoestrol in solution in 500 g. soil.2. Activity and reproduction of A. caliginosa was unaffected by 10 mg. hexoestrol in 500 g. soil, but 100 mg. and over affected activity and stopped reproduction.3. Egg capsules of A. caliginosa and A. chlorotica developed normally in a saturated aqueous solution of hexoestrol.4. No effect on the soil fauna of grass plots due to grazing with implanted bullocks was observed.

Darstellung und röntgenographische Untersuchung von drei Strontiumazidhydraten

1973 ◽  
Vol 137 (4) ◽  
Author(s):  
H. Krischner ◽  
H. E. Roth
Keyword(s):  
Aqueous Solution ◽  
Saturated Aqueous Solution

AbstractThree different hydrates of strontiumazide have been prepared by crystallization from saturated aqueous solution. Sr(N

scholarly journals Ecology and Diversity of Urban Pine Forest Soil Invertebrates in Rīga, Latvia / Augsnes Bezmugurkaulnieku Bioloģiskā Daudzveidība Urbānajos Priežu Mežos Rīgā, Latvijā

2015 ◽  
Vol 69 (3) ◽  
pp. 120-131
Author(s):  
Dmitry Telnov ◽  
Ineta Salmane
Keyword(s):  
Soil Fauna ◽  
Urban Forest ◽  
Soil Invertebrates ◽  
Soil Invertebrate ◽  
Community Similarity ◽  
Faunal Diversity ◽  
Undisturbed Soils ◽  
Pine Forest Soil ◽  
Disturbed Soils ◽  
Forest Habitats

Abstract A study on ecology and diversity of soil invertebrates of urban pine and mixed pine forests was carried out in seven different sampling plots in Rīga during 2014. Ninety eight soil samples were processed and in total, 40 426 specimens were extracted (of them, 25 237 specimens were identified to species level and 15 189 to order level). Indices (abundance, community similarity etc.) characterising faunal diversity and species communities of Rīga city soil fauna were estimated. The most numerous soil invertebrate groups were Collembola, Oribatida and Mesostigmata, accounting for 95% of all collected animals. There was rather high diversity of soil invertebrates in the disturbed urban forest habitats, but undisturbed soils harbour a greater species richness of mite fauna than disturbed soils.

scholarly journals The Effect of Fertilizer Regime on Soil Fauna

2016 ◽  
Vol 73 (2) ◽  
pp. 353
Author(s):  
Mignon Sandor ◽  
Traian Brad ◽  
Aurel Maxim ◽  
Valentina Sandor ◽  
Bogdan Onica
Keyword(s):  
Green Manure ◽  
Soil Fauna ◽  
Agricultural Practices ◽  
Mineral Fertilizer ◽  
Lumbricus Terrestris ◽  
Animal Manure ◽  
Folsomia Candida ◽  
Aporrectodea Caliginosa ◽  
Negative Effects ◽  
Key Factor

Soil fauna activity in agricultural soil is a key factor to maintain soil fertility and to assure soil ecosystem services. It is now accepted that agricultural practices like tillage and pesticide use can harm soil organisms including earthworms and springtails. Other practices like the use of green manure or animal manure have been considered as being beneficial to these soil invertebrates. To deepen our knowledge on the effect of fertilizers (mineral and organic) on earthworms (Aporrectodea caliginosa and Lumbricus terrestris) and springtails  (Folsomia candida) 56 microcosm experiments were made with two soil types and two hydric regimes. The microcosms were amended with four fertilizers: ammonium nitrate, mustard as green manure, cow manure and slurry. The results emphasize that mustard use had beneficial effect on Folsomia candida abundance and Aporrectodea caliginosa biomass, while mineral fertilizer had negative effects for all species used in the experiment.

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