Comprehensive evaluation of natural enemy dominant species of Breuipalpus oboyats in tea garden in autumn and winter

2021 ◽  
Author(s):  
Lin Zhang ◽  
Jiazhao Sun ◽  
Xiaomeng Wu ◽  
Yu Xu ◽  
Shoudong Bi ◽  
...  
Keyword(s):  
Natural Enemy ◽  
Dominant Species ◽  
Comprehensive Evaluation ◽  
Tea Garden ◽  
Autumn And Winter

Seasonality in a taxocoenosis of molluscs from soft bottoms in the Bay of Cádiz (southern Spain)

2001 ◽  
Vol 81 (6) ◽  
pp. 903-912 ◽  
Author(s):  
Jose L. Rueda ◽  
Manuel Fernández-Casado ◽  
Carmen Salas ◽  
Serge Gofas
Keyword(s):  
Species Richness ◽  
Correspondence Analysis ◽  
Dominant Species ◽  
Southern Spain ◽  
Soft Bottom ◽  
Soft Bottoms ◽  
High Species Richness ◽  
Bay Of Cadiz ◽  
Bay Of Cádiz ◽  
Autumn And Winter

The macrofauna of molluscs associated with soft bottoms in the Bay of Cádiz (southern Spain) was studied monthly from February 1994 to January 1996. The number of species (63) is high for a soft bottom and is related to environmental characteristics (growth of macrophytes) and the biogeographical setting of the studied area. Corbula gibba (∼90%) was the dominant species in this taxocoenosis together with the gastropod Nassarius pygmaeus and the bivalves Pandora inaequivalvis, Parvicardium exiguum and Macoma melo. The most frequent species during the two years was also the bivalve Corbula gibba (100%) followed by the gastropods Nassarius pygmaeus, Tricolia tenuis, Rissoa membranacea and the bivalve Macoma melo. Total abundance of the taxocoenosis in both years reached higher values in spring. The dynamics of the ecological indices such as diversity or evenness, and the species richness showed a similar pattern in both years, with low values of diversity and evenness together with high species richness in spring and summer months and the reverse in autumn and winter. The qualitative correspondence analysis of monthly samples shows an ordination related to seasonality in both studied years, however the values of Jaccard's coefficient do not indicate significant boundaries among the monthly samples. The quantitative correspondence analysis shows an ordination and grouping of samples related to the biology of species, particularly with the recruitment of C. gibba, the dominant species. The existence of similar trends in the structure of the taxocoenoses over both years, and the seasonality highlighted by the qualitative correspondence analysis, seems to indicate a certain stability of the ecosystem.

scholarly journals Seasonal Variability in the Microbial Community and Pathogens in Wastewater Final Effluents

Water ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2586 ◽  
Author(s):  
Xiang Chen ◽  
Xiu Lu Lang ◽  
Ai-Ling Xu ◽  
Zhi-Wen Song ◽  
Juan Yang ◽  
...  
Keyword(s):  
Microbial Community ◽  
Seasonal Variability ◽  
Dominant Species ◽  
Pathogenic Bacteria ◽  
High Throughput Sequencing ◽  
Species Abundance ◽  
Security Risks ◽  
Autumn And Winter ◽  
Final Effluent ◽  
Mycobacterium Spp

Numerous bacteria, especially pathogens, exist in wastewater final effluents, which can lead to possible human health and ecological security risks when effluents are reused or discharged. However, the diversity, composition, and spatiotemporal dynamics of bacteria in wastewater final effluents remain poorly understood. In this study, a comprehensive analysis of the microbial community and pathogens in wastewater final effluents was performed using high-throughput sequencing. The results revealed that wastewater final effluents in autumn exhibited the highest bacterial community richness and diversity, while those in winter exhibited the lowest. Bacteria in wastewater final effluents predominantly belonged to five phyla, in the order of Proteobacteria, Actinobacteria, Planctomycetes, Bacteroidetes, and Firmicutes. At the species level, there were 8~15 dominant species in the wastewater final effluent in each season, and Dokdonella immobilis, Rhizobium gallicum, Candidatus Flaviluna lacus, and Planctomyces limnophilus were the most dominant species in spring, summer, autumn, and winter, respectively. The seasonal variability in bacteria suggested that the microbial diversity and community in wastewater final effluents were mainly influenced by temperature, salinity, disinfection methods, and flocculants. Notably, pathogenic bacteria in wastewater effluents had both the highest relative abundance and species abundance in summer. Arcobacter spp., Legionella spp., and Mycobacterium spp. were the dominant pathogenic bacteria, and all pathogenic bacteria were mainly associated with dermatosis, enteropathies, septicemia, and pneumonia.

Water Quality Evaluation Research Based on Fuzzy Mathematics in Weihe

2014 ◽  
Vol 587-589 ◽  
pp. 869-872
Author(s):  
Ying Dong ◽  
Jian Hua Zhou ◽  
Xi Jun Wu
Keyword(s):  
Water Quality ◽  
Quality Evaluation ◽  
Comprehensive Evaluation ◽  
Evaluation Research ◽  
Shaanxi Province ◽  
Fuzzy Mathematics ◽  
Water Quality Evaluation ◽  
Class V ◽  
Pollution Levels ◽  
Autumn And Winter

Weihe is the largest river in Shaanxi province. The comprehensive evaluation of the monitoring datas in 2012 in Weihe Tongguan drawbridge section was presented in this paper by using the FCE method. The results showed that the water quality pollution levels in this section are Class V, I, IV and V respectively in the four quarters which are spring, summer, autumn and winter, the main pollutant is NH3-N. Compared with the traditional method of single factor assessment, this method can reflect the water quality more comprehensively and reasonably.

scholarly journals Seasonal variability of the composition and structure of parasite communities of red porgy, Pagrus pagrus (Perciformes: Sparidae) off Brazil

2015 ◽  
Vol 52 (3) ◽  
pp. 236-243 ◽  
Author(s):  
I. A. Soares ◽  
J. L. Luque
Keyword(s):  
Rainy Season ◽  
Dominant Species ◽  
Parasite Community ◽  
Reproductive Activity ◽  
Metazoan Parasites ◽  
Parasite Communities ◽  
Four Seasons ◽  
Composition And Structure ◽  
Pagrus Pagrus ◽  
Autumn And Winter

Abstract A study of seasonal variation of metazoan parasite community of Pagrus pagrus was conducted between January and December 2012. Two hundred forty specimens of Pagrus pagrus were collected in four seasons (autumn and winter in dry season and spring and summer in rainy season) from off the state of Rio de Janeiro, Brazil. Twenty one species of metazoan parasites were found, with larvae of Hysterothylacium sp. being the dominant species. The highest values of prevalence and abundance was during the rainy season with peak prevalence of monogeneans and nematodes, period of action of the South Atlantic Central Waters (SACW) and reproductive activity of the host, suggesting that the sasonal variation in the parasites community was influenced for these phenomena.

Properties Test and Analysis of Aloe Fiber Knitted Fabric

2012 ◽  
Vol 503-504 ◽  
pp. 641-645
Author(s):  
Xiao Ting Feng ◽  
Jia Guang Meng ◽  
Juan Bai
Keyword(s):  
Comprehensive Evaluation ◽  
Air Permeability ◽  
Fuzzy Mathematics ◽  
Knitted Fabric ◽  
Moisture Permeability ◽  
Autumn And Winter

This article mainly introduced various properties of knitted fabric made of aloe fiber, including air permeability, moisture permeability, fastness, rigidity and flexibility, heat retention property, crease recovery, and made a comprehensive evaluation with fuzzy mathematics. Finally we obtained the best stitches applying to spring, summer, autumn and winter.

The Study and Analysis on Seasonal Variations of Nano and Microalgae in Stomach Contents of Venerupis philippinarum in Xiangshan Bay

2014 ◽  
Vol 955-959 ◽  
pp. 517-522
Author(s):  
Gen Hai Zhu
Keyword(s):  
Seasonal Variations ◽  
Dominant Species ◽  
Skeletonema Costatum ◽  
Stomach Contents ◽  
Species Number ◽  
Venerupis Philippinarum ◽  
Xiangshan Bay ◽  
Four Seasons ◽  
Autumn And Winter

In this study, we analyzed the compositions and seasonal variations of nanoand microalgae in stomach contents of Venerupis philippinarum in Xiangshan Bay. 132 species of nanoand microalgae were identified in Venerupis philippinarum stomach contents in four seasons. The nanoand microalgae in Venerupis philippinarum ingested were changed with variations of seasons. The nanoand microalgae ingested in spring and summer were larger than those ingested in autumn and winter, while the species number ingested in spring were more than those ingested in summer, autumn or winter. The nanoalgae in Venerupis philippinarum stomach contents were smaller than 20 micrometer and the dominant species were Skeletonema costatum, Navicula perminuta, Paralia sulcata, Leptocylindrus minimus, Cylotella spp., Nitzschia spp., etc. The microalgae were larger than 20 micrometers and the dominant species were Coscinodiscus jonesianus.

scholarly journals Parasitofauna of Brown Bear (Ursus arctos) in the Protected Landscape Area CHKO — Poľana

2016 ◽  
Vol 60 (4) ◽  
pp. 20-24 ◽  
Author(s):  
T. Orosová ◽  
M. Goldová ◽  
J. Ciberej ◽  
G. Štrkolcová
Keyword(s):  
Seasonal Dynamics ◽  
Dominant Species ◽  
Ursus Arctos ◽  
Brown Bear ◽  
Young Female ◽  
Brown Bears ◽  
Baylisascaris Transfuga ◽  
Autumn And Winter

Abstract During the years 2015—2016 we obtained 15 samples of faeces of brown bears (Ursus arctos) and 2 samples of gastrointestinal (GI) tracts of young female brown bears for helminthological examinations. The samples of faeces were collected from various sites in the protected landscape area CHKO-Poľana, and the gastrointestinal tracts originated from bears hunted down in the same area within permitted regulation of bear population for 2015. Of the 17 samples collected from the CHKO-Poľana area, 13 were positive for the presence of parasites (76.47 %). Parasitological examinations revealed the presence of 5 species of endoparasites: Eimeria, Cryptosporidium, Sarcocystis, Baylisascaris and Ancylostoma. Roundworms Baylisascaris transfuga (46.15 %) and Ancylostoma spp. (30.77 %) were the dominant species. Observation of the seasonal dynamics showed the highest prevalence of parasites during autumn and winter.

Comprehensive Evaluation Research on the Performances of High Quality Underwear Fabrics

2012 ◽  
Vol 184-185 ◽  
pp. 909-913
Author(s):  
Yan Jun Liu ◽  
Tao Xue ◽  
Li Yang
Keyword(s):  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Evaluation Research ◽  
Bamboo Fiber ◽  
Wool Fiber ◽  
Fuzzy Mathematics ◽  
High Quality ◽  
Comprehensive Evaluation Model ◽  
Autumn And Winter ◽  
Fiber Fabric

Abstract. The performances of underwear fabrics are good or bad is a concept of Physiology and psychology, comprehensive evaluation of its performances by fuzzy mathematics is objective and accurate. Fuzzy mathematics was used in this paper to establish comprehensive evaluation model, and on the basis of this model, the comprehensive evaluation on the performances of the four warmth underwear fabrics were made. The evaluation result indicated that the comprehensive performances of wool fiber covering bamboo fiber compound fabric are superior to pure wool fiber fabric and wool/ bamboo fiber blended fabric. These kinds fabrics are suitable for making high quality warmth underwear for autumn and winter.

Circalittoral suprabenthic coarse sand community from the western English Channel

1994 ◽  
Vol 74 (3) ◽  
pp. 543-562 ◽  
Author(s):  
Jean-Claude Dauvin ◽  
Angeles Iglesias ◽  
Jean-Claude Lorgere
Keyword(s):  
Dominant Species ◽  
Quantitative Description ◽  
Abundant Species ◽  
Coarse Sand ◽  
English Channel ◽  
The North ◽  
Four Levels ◽  
Upper Level ◽  
Similar Density ◽  
Autumn And Winter

A first quantitative description of the suprabenthic fauna in a coarse sand community from the western English Channel is provided. One hundred and twenty species of Crustacea were collected in 22 suprabenthic sledge hauls collected throughout the year (1988–1989). Mysids and Amphipods dominated the fauna, among them Anchialina agilis (Sars), Gastrosaccus spp., Apherusa spp., Eusirus longipes Boeck, and Stenothoe marina (Bate) were the dominant species. Although most dominant species showed a vertically decreasing gradient of density from the lower net to the upper level of the sledge, the most abundant species, Apherusa spp., showed similar density at all four levels. The mean density at the four levels of the sledge did not differ significantly with the distance above the sediment. Species performed nocturnal vertical migrations: the densities of mysids were higher during the day than at night; conversely, the densities of amphipods and decapods were higher at night than during the day. The density and species richness showed high seasonal variation, from low values at the end of autumn and winter to high values in summer and the beginning of autumn. The results are compared with the available data on suprabenthic communities from the North Atlantic; this highlights (1) the lack of concentration of suprabenthic fauna towards the sediment on coarse sand, and (2) the highest abundance of the suprabenthic fauna from muddy substrata.

scholarly journals Hatay İli Yonca Üretim Alanlarında Bulunan Böcek Faunasının Tespiti ve Bazı Türlerin Popülasyon Yoğunlukları

2018 ◽  
Vol 6 (3) ◽  
pp. 352 ◽  
Author(s):  
Kamuran Kaya
Keyword(s):  
Natural Enemies ◽  
Natural Enemy ◽  
Dominant Species ◽  
First Year ◽  
Population Densities ◽  
Insect Fauna ◽  
Lygus Rugulipennis ◽  
Beneficial Insect ◽  
Second Year ◽  
Sweep Net

The current study was conducted to determine insect fauna and population densities of some phytophagous and beneficial insect species at two different alfalfa fields in Narlıca district of Hatay province, Turkey in 2009-2010. In the first year biweekly, and in the second year weekly samplings were carried out by 25 sweep-net samplings taken by walking in diagonal directions. Aphids, thrips and gallery flies were also sampled by counting of 30 alfalfa stalks in every 8-10 steps in each of the sampling fields. As a result, 53 phytophagous species belonging to 14 families of five orders and 30 natural enemy species including 20 predators and 10 parasitoids belonging to nine families of six orders were obtained. With 19 species, Cicadellidae has been the largest number of species-containing family and Asymmetrasca descedens and Empoasca decipiens were the most intensively species in this family. In addition, Lygus rugulipennis was the most dominant species among all phytophagous species obtained. It has been found that populations of all pests species were affected by mowing the alfalfa, and show a decline. Predators were predominant among detected natural enemies, and their populations were persistent in the alfalfa fields despite approximately 7-8 mowing per year.

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