Present knowledge on earthworm biodiversity in the State of Paraná, Brazil

Sautter, Klaus Dieter; Brown, G. G.; James, Samuel W.; Pasini, Amarildo; Nunes, Daiane Heloisa; Benito, Norton Pólo

doi:10.1016/j.ejsobi.2006.07.038

Cited by 15 publications

(9 citation statements)

References 2 publications

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“…The earthworm has an important role in the equilibrium of the soil nutrients distribution, in particular, the increase of soil stability, infiltration rates, besides playing an important role in the phosphorus (P) and nitrogen (N) cycles [35]. In this context, interesting work has been developed by Brown et al regarding the worms population of the state of Paraná, Brazil, aiming to evaluate the soil characteristics of this region [36].…”

Section: Some New Extracellular Hemoglobins From Different Wormsmentioning

confidence: 99%

Recent New Characterizations on the Giant Extracellular Hemoglobin of Glossoscolex paulistus and Some Other Giant Hemoglobins from Different Worms

Tabak¹,

Carvalho²,

Carvalho³

et al. 2012

Stoichiometry and Research - The Importance of Quantity in Biomedicine

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Section: Some New Extracellular Hemoglobins From Different Wormsmentioning

confidence: 99%

Recent New Characterizations on the Giant Extracellular Hemoglobin of Glossoscolex paulistus and Some Other Giant Hemoglobins from Different Worms

Tabak¹,

Carvalho²,

Carvalho³

et al. 2012

Stoichiometry and Research - The Importance of Quantity in Biomedicine

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“…Earthworms mineralize phosphor, nitrogen, and organic matter in manure fertilizers and turn them into nutrients available for plants (Buchanan et al 1988). These organisms directly increase litterfall decomposition rate by enhancement of microbial activities (Tsukamoto and Sabang 2005) and advance soil physical properties by improvement of soil structure as well as water and air infiltration capability which are indispensable for plant growth (Sautter et al 2006). The effect of land use change on density and abundance of earthworms in Hariyali area in India was examined by Bhadauria et al (2012).…”

Section: Introductionmentioning

confidence: 99%

Earthworms as indicators for different forest management types and human disturbance in Ilam oak forest, Iran

Heydari

Poorbabaei

Bazgir

et al. 2014

Folia Forestalia Polonica

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There has been observed widespread destruction of natural ecosystems around the world due to population growth, land use change and clear cutting which have affected soil properties. Different management strategies have been so far implemented to reduce this crisis in various regions of the world, such as e.g. short-term and long-term conservation management in the Zagros region. However, any management approach should be evaluated with appropriate measures to determine how managed areas respond. The main objective of the present study was to evaluate the potential of earthworms as an indicator for different forest management strategies and human disturbances in Zagros oak (Quercus persica Jaub. and Spach) forest. The sites selected included undisturbed one as the control (Un), the sites under five-year conservation management (FCM) and twenty-year conservation management (TCM) as well as the disturbed site (D). The results of principal component analysis (PCA) showed that different regions separated into the components: PC1 and PC2. Un and TCM sites gathered together and represented higher values of the factors such as pH, K available , OC, clay content, P available , CEC, overstory tree canopy, N tot , biomass and abundance of earthworms. The positive direction of the first axis reflected a gradient of EC, BD and P tot . According to the logistic model, NH 4 -N and EC played the most important role in earthworm presence and absence in Zagros forest ecosystem. Earthworm abundance and biomass could be a good indicator to evaluate different forest management strategies in the study area.

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“…Regarding the strong correlation between the soil's physical, chemical, and biological properties, it can be said that the presence of the litter layer on the soil surface changes the amount of organic carbon, nitrogen content, bulk density, and soil pores, and will affect soil biological activities such as earthworms and some microorganisms [10]. Similarly, Ampoorter et al [61] showed that achieving different soil ecological recovery methods mainly depends on soil properties and conditions such as pH, the presence of a litter layer, access to nutrients and moisture.…”

Section: Discussionmentioning

confidence: 99%

Earthworms as an Ecological Indicator of Soil Recovery after Mechanized Logging Operations in Mixed Beech Forests

Sohrabi

Jourgholami

Jafari

et al. 2020

Forests

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Soil damage caused by logging operations conducted to obtain and maximize economic benefits has been established as having long-term effects on forest soil quality and productivity. However, a comprehensive study of the impact of logging operations on earthworms as a criterion for soil recovery has never been conducted in the Hyrcanian forests of Iran. The aim of this study was to determine the changes in soil biological properties (earthworm density and biomass) and its recovery process under the influence of traffic intensity, slope and soil depth in various intervals according to age after logging operations. Soil properties were compared among abandoned skid trails with different ages (i.e., 3, 10, 20, and 25 years) and an undisturbed area. The results showed that earthworm density and biomass in the high traffic intensity and slope class of 20–30% at the 10–20 cm depth of the soil had the lowest value compared to the other treatments. Twenty-five years after the logging operations, the earthworm density at soil depth of 0–10 and 10–20 cm was 28.4% (0.48 ind. m−2) and 38.6% (0.35 ind. m−2), which were less than those of the undisturbed area, respectively. Meanwhile, the earthworm biomass at a soil depth of 0–10 and 10–20 cm was 30.5% (2.05 mg m−2) and 40.5% (1.54 mg m−2) less than the values of the undisturbed area, respectively. The earthworm density and biomass were positively correlated with total porosity, organic carbon and nitrogen content, while negatively correlated with soil bulk density and C/N ratio. According to the results, 25 years after logging operations, the earthworm density and biomass on the skid trails were recovered, but they were significantly different with the undisturbed area. Therefore, full recovery of soil biological properties (i.e., earthworm density and biomass) takes more than 25 years. The conclusions of our study reveal that the effects of logging operations on soil properties are of great significance, and our understanding of the mechanism of soil change and recovery demand that harvesting operations be extensively and properly implemented.

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Present knowledge on earthworm biodiversity in the State of Paraná, Brazil

Cited by 15 publications

References 2 publications

Recent New Characterizations on the Giant Extracellular Hemoglobin of Glossoscolex paulistus and Some Other Giant Hemoglobins from Different Worms

Recent New Characterizations on the Giant Extracellular Hemoglobin of Glossoscolex paulistus and Some Other Giant Hemoglobins from Different Worms

Earthworms as indicators for different forest management types and human disturbance in Ilam oak forest, Iran

Earthworms as an Ecological Indicator of Soil Recovery after Mechanized Logging Operations in Mixed Beech Forests

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