Responses of soil-inhabiting mesostigmatid mites to deforestation and disturbance in oak (Quercus brontii) forests of southwestern Iran

The impacts of deforestation on edaphic mesostigmatid mites were investigated in oak forests of Lordegan, southwestern Iran, from April to October. A total of twenty-one species belonging to eighteen genera and ten families were collected and identified. The Shannon-Wiener, Simpson, Jaccard's and Margalef biodiversity indices were used for data analyses. Among the collected species, Antennoseius bacatus with 29% and Sessilunchus hungaricus with 16% relative abundance were the most abundant and dominant species in human-disturbed and natural forests, respectively. The estimated values were higher in natural oak forest than in disturbed and cultivated habitat. Significant differences were observed in soil nitrogen content and soil organic carbon between the two habitats, but not in pH values. Significant effects of sampling time and habitat were found on all four indices, but the effect of their interactions on these indices was not significant. It can be concluded that the changes in soil quality that resulted from deforestation may have a major role in reducing the soil mite density and related diversity indices in disturbed forests.

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Climate resilience through natural regeneration in degraded natural forests of south-eastern hilly region of Bangladesh

Bangladesh Journal of Botany ◽

10.3329/bjb.v48i3.47720 ◽

2019 ◽

Vol 48 (3) ◽

pp. 417-425

Author(s):

Md Khayrul Alam Bhuiyan ◽

Md Akhter Hossain ◽

Abdul Kadir Ibne Kamal ◽

Mohammed Kamal Hossain ◽

Mohammed Jashimuddin ◽

...

Keyword(s):

Tree Species ◽

Natural Regeneration ◽

Diversity Indices ◽

Acacia Auriculiformis ◽

Quantitative Structure ◽

Natural Forests ◽

Climate Resilience ◽

Hilly Region ◽

Major Cluster ◽

Ecological Dominance

A study was conducted by using 5m × 5m sized 179 quadrates following multistage random sampling method for comparative regenerating tree species, quantitative structure, diversity, similarity and climate resilience in the degraded natural forests and plantations of Cox's Bazar North and South Forest Divisions. A total of 70 regenerating tree species were recorded representing maximum (47 species) from degraded natural forests followed by 43 species from 0.5 year 39 species from 1.5 year and 29 species from 2.5 year old plantations. Quantitative structure relating to ecological dominance indicated dominance of Acacia auriculiformis, Grewia nervosa and Lithocarpus elegans seedlings in the plantations whereas seedlings of Aporosa wallichii, Suregada multiflora and Grewia nervosa in degraded natural forests. The degraded natural forests possess higher natural regeneration potential as showed by different diversity indices. The dominance-based cluster analysis showed 2 major cluster of species under one of which multiple sub-clusters of species exists. Poor plant diversity and presence of regenerating exotic species in the plantations indicated poor climate resilience of forest ecosystem in terms of natural regeneration.

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The Malachite Green Biodegradation in Bioreactors on Various pH Domains

Revista de Chimie ◽

10.37358/rc.19.8.7472 ◽

2019 ◽

Vol 70 (8) ◽

pp. 2996-2999

Author(s):

Viorel Gheorghe ◽

Catalina Gabriela Gheorghe ◽

Andreea Bondarev ◽

Vasile Matei ◽

Mihaela Bombos

Keyword(s):

Malachite Green ◽

Contact Time ◽

Dominant Species ◽

Wastewater Treatment Plants ◽

Organic Substances ◽

Biological Degradation ◽

Growth Promoters ◽

Ph Values ◽

Biological Sludge ◽

Ph Range

In the experimental study was studied the malachite green colorant biodegradation in biological sludge with biological activity. The biodegradability tests were carried out in laboratory bioreactors, on aqueous solutions of green malachite contacted with microorganisms in which the dominant species is Paramecium caudatum, in a pH range between 8 and 12, temperatures in the ranges 25-350C, using pH neutralizing substances and biomass growth promoters. The colorant initial concentrations and those obtained after biological degradation depending on the contact time, at certain pH values, were established through UV-Vis spectrometry. The studies have shown the measure of possible biological degradation of some organic substances with extended uses, with largely aromatic structure, resistance to biodegradation of microorganisms, commonly used in wastewater treatment plants.

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Diverging consequences of past forest management on plant and soil attributes in ancient oak forests of southwestern Iran

Forest Ecology and Management ◽

10.1016/j.foreco.2021.119360 ◽

2021 ◽

Vol 494 ◽

pp. 119360

Author(s):

Mehdi Heydari ◽

Sina Attar Roshan ◽

Manuel Esteban Lucas-Borja ◽

Reza Omidipour ◽

Bernard Prévosto

Keyword(s):

Forest Management ◽

Oak Forests ◽

Soil Attributes ◽

Southwestern Iran

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Diversity and community structure of Ephemeroptera in freshwater stream of Megamalai hills, Tamil Nadu, India

ENTOMON ◽

10.33307/entomon.v46i4.638 ◽

2021 ◽

Vol 46 (4) ◽

pp. 279-284

Author(s):

S. Barathy ◽

T. Sivaruban ◽

Srinivasan Pandiarajan ◽

Isack Rajasekaran ◽

M. Bernath Rosi

Keyword(s):

Community Structure ◽

Species Diversity ◽

Air Temperature ◽

Tamil Nadu ◽

Dominant Species ◽

Diversity Indices ◽

Low Diversity ◽

Freshwater Stream ◽

Species Diversity Indices ◽

High Diversity

In the study on the diversity and community structure of Ephemeroptera in the freshwater stream of Chinnasuruli falls on Megamalai hills, a total of 523 specimens belonging to thirteen genera and five families were collected in six month periods. Of the five families, Teloganodidae and Leptophlebiidae exhibited high diversity and Caenidae showed low diversity. Choroterpes alagarensis (Leptophlebiidae) is the most dominant species. Diversity indices such as Shannon and Simpson indices showed that diversity was maximum in November and December and it was minimum in August and January. Canonical Correspondence Analysis revealed that rainfall, water flow, turbidity, and air temperature were the major stressors in affecting the Ephemeropteran community structure.

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Moon and tide effects on fish capture in a tropical tidal flat

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315410001955 ◽

2010 ◽

Vol 91 (3) ◽

pp. 735-743 ◽

Cited By ~ 6

Author(s):

José Amorim Reis-Filho ◽

Francisco Barros ◽

José De Anchieta Cintra Da Costa Nunes ◽

Cláudio Luis Santos Sampaio ◽

Gabriel Barros Gonçalves De Souza

Keyword(s):

Tidal Flat ◽

Dominant Species ◽

Full Moon ◽

Diversity Indices ◽

Tidal Range ◽

Species Number ◽

Trophic Groups ◽

Significant Difference ◽

The Mean ◽

Tropical Tidal Flat

The influence of the lunar phases and tidal range on the fish capture was analysed in a tidal flat in Barra do Paraguaçu (Baía de Todos os Santos). The sampling was realized in the flood tide and ebb tide of the spring (full moon) and neap (waning moon) tides, between June 2007 and May 2008. At all sampling occasions, two parallel drags were accomplished to the tidal flat, in the same direction of the current, in a 100 m long area marked on the beach beforehand, using a seine net of 15 m × 2.0 m with a mesh of 12 mm between adjacent knots. A total of 2312 fish specimens were captured (26.5 kg), belonging to 75 species from 45 families. The mean number of captured fish was significantly larger in full moon at ebb tides, while the mean weight in the captures was larger in ebb tides. There was significant difference in number of species, number of fish, richness and diversity between full and waning moons. The number of fish and biomass were significantly different between tides. Significant differences were found in community structure regarding trophic groups in relation to tide and moon, although the classic diversity indices did not capture this effect between tides. Furthermore, it was possible to identify preferences of occurrence related to the change of tide in dominant species.

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Communities of soil mites (Acarina) in planted birch stands compared with natural forests in central Finland

Canadian Journal of Forest Research ◽

10.1139/x02-151 ◽

2003 ◽

Vol 33 (2) ◽

pp. 171-180 ◽

Cited By ~ 21

Author(s):

Veikko Huhta ◽

Ritva Niemi

Keyword(s):

Betula Pendula ◽

Soil Fauna ◽

Deciduous Forests ◽

Litter Layer ◽

Natural Forests ◽

Clear Cutting ◽

Soil Mite ◽

Spruce Stands ◽

Study Sites ◽

Mite Communities

The aim of the study was to compare the soil mite communities in anthropogenous birch stands of different origin with each other and with natural forests at the same latitude. Nine sites were investigated: three birch stands (Betula pendula Roth) planted ca. 30 years prior to the study after clear-cutting of spruce stands ("birch after spruce"), three birch stands planted ca. 30 years earlier on arable soil that had been under cultivation until reforestation ("birch after field"), and three natural deciduous forests. These were sampled twice, and microarthropods were extracted, counted, and identified. There were clear differences between birch stands established after spruce forest and after cultivation and between these and natural deciduous forests. The communities of birch after spruce were rather similar to those of natural spruce forests, but the population densities were lower. The populations in birch after field were generally very low. There were also conspicuous differences among replicates of the same kind of forests. All the dominant species in the study sites are common members of the forest soil fauna. The communities of birch after field could be characterized as impoverished forest communities. Soil pH and the removal of the litter layer by earthworms were regarded as the most important factors explaining the observed differences.

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Butterfly Diversity of Indian Institute of Forest Management, Bhopal, Madhya Pradesh, India

Journal of Insects ◽

10.1155/2014/254972 ◽

2014 ◽

Vol 2014 ◽

pp. 1-4 ◽

Cited By ~ 3

Author(s):

Sprih Harsh

Keyword(s):

Forest Management ◽

Host Plants ◽

Dominant Species ◽

Diversity Indices ◽

Shannon Index ◽

Indian Institute ◽

Butterfly Species ◽

Shannon Diversity ◽

Eurema Hecabe ◽

Evenness Index

A study to find out the diversity of butterflies at the Indian Institute of Forest Management (IIFM), Bhopal, was carried out over a period of six months from October 2013 to March 2014. A total of 55 butterfly species belonging to 5 families, namely, Hesperiidae (7 species), Papilionidae (4 species), Pieridae (10 species), Lycaenidae (13 species), and Nymphalidae (21 species), were recorded (with photographic record) during the study from three different habitats of campus: open scrub, dry deciduous, and urbanized habitat. Shannon diversity indices and Pielou’s evenness index were calculated for all the habitats. Shannon index was found to be highest for open scrub (3.76). Out of 54 species, Eurema brigitta was the most dominant species followed by Eurema hecabe, Junonia lemonias, and Phalanta phalantha. Dominance of these species can be explained by the presence of their larval and host plants in the campus.

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Effects of species replacement on the relationship between net primary production and soil nitrogen availability along a topographical gradient: Comparison of belowground allocation and nitrogen use efficiency between natural forests and plantations

Forest Ecology and Management ◽

10.1016/j.foreco.2018.03.046 ◽

2018 ◽

Vol 422 ◽

pp. 214-222 ◽

Cited By ~ 3

Author(s):

Yuka Maeda ◽

Naoaki Tashiro ◽

Tsutomu Enoki ◽

Rieko Urakawa ◽

Takuo Hishi

Keyword(s):

Soil Nitrogen ◽

Nitrogen Use Efficiency ◽

Nitrogen Availability ◽

Net Primary Production ◽

Species Replacement ◽

Natural Forests ◽

Soil Nitrogen Availability ◽

Nitrogen Use ◽

Use Efficiency ◽

The Relationship

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The comparison of THMs and HAAs formation and speciation by chlorination and chloramination for different water sources

Global NEST Journal ◽

10.30955/gnj.002200 ◽

2017 ◽

Vol 19 (4) ◽

pp. 607-613 ◽

Cited By ~ 1

Keyword(s):

Dominant Species ◽

Detection Limits ◽

Water Sources ◽

Haloacetic Acids ◽

Ph Values ◽

By Products ◽

Different Water Sources

Disinfection by-products (DBPs) can be controlled by using alternative disinfectants to chlorine, removing DBPs precursors prior to chlorination and removing DBPs after formed. Chloramine is widely used as an alternative disinfectant to chlorine usage. In this study to evaluate trihalomethanes (THMs) and haloacetic acids (HAAs) formation and speciation for Altinapa and Omerli dam water isolates after chlorination and choramination procedures at different pH values was aimed. Compared with chlorination, the formation of THMs was reduced by approximately 4-fold in chloramination for Omerli dam water. Total THM concentrations remained below detection limits in Altinapa isolate after chloramination. The dominant species were CF and followed by BDCM and CDBM in case of chlorination, and almost no BF formed. BF is the dominant specie together with CF in case of chloramination, and no BDCM and CDBM formed at all pHs for Omerli dam water. HAA concentrations resulting from the use of chlorine were obtained 4.8-5.1 times higher from resulting from the use of chloramines at different pH values for Omerli Dam water; but this value was 5.5-8.7 for Altinapa Dam water. MCAA, DCAA and BCAA concentrations were a large part of the total HAA concentrations which obtained from chloramines usage for both isolates.

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