Estimating Earthworm Populations by Using Formalin

Raw, F.

doi:10.1038/1841661a0

Cited by 336 publications

(106 citation statements)

References 2 publications

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“…Earthworm abundance was determined for an area of 1/8 m 2 by hand selection from the litter and a consecutive formalin extraction [36]. Eight 1/8 m 2 circles per site were chosen at random and sampled in May 2003.…”

Section: Litter Sampling and Extraction Of Lumbricidaementioning

confidence: 99%

Hazel improves soil quality of sloping oak stands in a German low mountain range

Mohr

Topp

2005

Ann. For. Sci.

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-We compared Quercus petraea monocultures with adjacent mixed oak-hazel (Corylus avellana) stands at gentle (14°) and steep (25°) slopes of the Ahr-Eifel. The influence of hazel on forest floor mass, soil nutrients, microbial properties and on the abundance of Lumbricidae was studied. Litter mass was greater in mixed stands than in oak monocultures, resulting in a thicker Ah-horizon. Additionally, the PO 4 3-, Ca 2+ -and Mg 2+ -contents were higher and the Al 3+ -content lower in the upper soil of mixed stands. In contrast, the contents of organic carbon , total nitrogen and the C/N ratio did not differ between the two soils. Basal respiration, specific microbial activity (qCO 2 ) and carbon mineralisation (C min ) were higher in mixed stands than in oak monocultures. Lumbricidae showed low densities in three of the stands studied (15-21 ind./m 2 ) and were almost absent at the oak monoculture on the steep terrain (2 ind./m 2 ). oak / hazel / decomposition / soil nutrients / LumbricidaeRésumé -Le noisetier améliore la qualité du sol des peuplements de chênes de basse montagne en Allemagne. Nous avons comparé des monocultures de type Quercus petraea avec des cultures adjacentes mixtes composées de chênes et de noisetiers (Corylus avellana) situées sur des pentes (14°/25°) différentes. L'influence du noisetier sur la masse de litière, les substances nutritives du sol, les propriétés microbiennes et l'abondance de Lumbricidae at été étudiée. Cette étude a montré que la masse de litière est plus élevée dans les cultures mixtes que dans les monocultures de chênes ; il en résulte un épaississement de l'horizon Ah. En outre, les teneurs en PO 4 3--P, Ca 2+ -et Mg 2+ -sont plus élevées et les teneurs en Al 3+ -plus faibles dans les couches supérieures des sols de cultures mixtes. Par contre, la teneur en carbone organique, en azote total ainsi que la relation C/N ne diffèrent pas. La respiration de base, l'activité microbienne spécifique (qCO 2 ) et la minéralisation carbonique (C min ) sont plus élevées dans les cultures mixtes que dans les monocultures de chênes. Les Lumbricidae présentent des densités faibles dans trois des cultures étudiées (15-21 ind./m 2 ), tandis qu'ils sont pratiquement absents dans les monocultures de chênes en terrain escarpé (2 ind./m 2 ). chêne / noisetier / décomposition / substances nutritives du sol / Lumbricidae

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Section: Litter Sampling and Extraction Of Lumbricidaementioning

confidence: 99%

Hazel improves soil quality of sloping oak stands in a German low mountain range

Mohr

Topp

2005

Ann. For. Sci.

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“…Earthworms were collected by the diluted formaldehyde method (Raw 1959) complemented with digging and hand-sorting. The combination of both methods provides a more complete sampling of species, because the formalin method alone is not efficient in collecting species living in horizontal burrows.…”

Section: Methodsmentioning

confidence: 99%

Diversity of earthworms (Clitellata: Lumbricidae) from Sredna Gora Mountain (Bulgaria)

Valchovski¹,

Velizarova²

2016

Opusc Zool

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Abstract. In the current study the diversity, zoogeographical position and distribution of earthworms from Sredna Gora Mountain (Bulgaria) is presented. During the present investigation, altogether ten earthworm species belonging to seven genera were collected. Among them, seven taxa are reported for the first time from the Sredna Gora Mt.: Cernosvitovia rebeli, Dendrobaena alpina, Allolobophoridella eiseni, Dendrodrilus rubidus rubidus, Aporrectodea caliginosa, Aporrectodea rosea and Lumbricus terrestris. On the basis of the new and literature data here we provide the first list of lumbricid earthworms from Sredna Gora Mountain.

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“…Com o auxílio de uma enxada, retiraram-se os resíduos orgânicos da superfície do solo e fixouse o demarcador "quadrado de madeira", com área de 0,25 m 2 . No interior deste, adicionaram-se, lentamente, 5 L da solução extratora de formol 0,22% (Raw, 1959). Após dez minutos da adição da solução extratora, coletaram-se, manualmente, os Oligochaeta que atingiram a superfície do solo.…”

Section: Methodsunclassified

Influência de diferentes sistemas de uso e manejo do solo sobre a flutuação populacional do Oligochaeta edáfico Amynthas spp.

Tanck¹,

Santos²,

Dionísio³

2000

Rev. Bras. Ciênc. Solo

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RESUMOAvaliou-se, mensalmente, a influência dos sistemas plantio direto (PD) e convencional (PC), mata nativa (MN) e campo nativo (CN) sobre a densidade populacional e biomassa do Oligochaeta gênero Amynthas spp., na região dos Campos Gerais (PR), no período de fevereiro de 1993 a janeiro de 1994. No PC e PD, as áreas foram cultivadas com milho, triticale e soja, enquanto, no campo nativo, a vegetação era composta de estepes de gramíneas baixas e de matas de galerias subtropicais para a mata nativa. A densidade populacional foi determinada pelo método do formol a 0,22% e a biomassa pela pesagem direta em balança analítica. A densidade populacional e a biomassa foram superiores no plantio direto e mata nativa, comparadas às do plantio convencional, enquanto, no campo nativo, não ocorreu a presença do gênero estudado. Os valores mais expressivos de densidade populacional e biomassa nos ecossistemas plantio direto e mata nativa foram observados no verão e primavera.Termos de indexação: plantio direto, plantio convencional, mata nativa, campo nativo, Amynthas spp., minhocas.

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Estimating Earthworm Populations by Using Formalin

Cited by 336 publications

References 2 publications

Hazel improves soil quality of sloping oak stands in a German low mountain range

Hazel improves soil quality of sloping oak stands in a German low mountain range

Diversity of earthworms (Clitellata: Lumbricidae) from Sredna Gora Mountain (Bulgaria)

Influência de diferentes sistemas de uso e manejo do solo sobre a flutuação populacional do Oligochaeta edáfico Amynthas spp.

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