The effect of Cercidium praecox and Prosopis laevigata on vertical distribution of soil free-living nematode communities in the Tehuacán Desert, Mexico

2008 ◽  
Vol 23 (6) ◽  
pp. 973-982 ◽  
Author(s):  
Stanislav Pen-Mouratov ◽  
Salvador Rodriguez-Zaragoza ◽  
Yosef Steinberger
Keyword(s):  
Vertical Distribution ◽  
Free Living ◽  
Nematode Communities ◽  
Free Living Nematode ◽  
Cercidium Praecox

scholarly journals Composition and vertical distribution of free living and plant parasitic nematodes in hop gardens in the Czech Republic

2011 ◽  
Vol 48 (2) ◽  
pp. 124-136 ◽  
Author(s):  
V. Čermák ◽  
V. Gaar ◽  
L. Háněl ◽  
K. Široká
Keyword(s):  
Czech Republic ◽  
Vertical Distribution ◽  
Soil Profile ◽  
Parasitic Nematodes ◽  
Soil Nematode ◽  
Plant Parasitic Nematodes ◽  
Free Living ◽  
The Czech Republic ◽  
Nematode Communities ◽  
Plant Parasitic

AbstractComposition and vertical distribution of soil nematode communities within soil profile were investigated in eight hop gardens in Czech Republic. In total, the presence of 78 nematode genera was confirmed. Genus Drilocephalobus (Coomans & Coomans, 1990) is new for fauna of the Czech Republic. The highest abundance of soil nematodes was found at a depth of 0–10 cm and declined with increasing depth of soil profile. The most dominant genus was Bitylenchus, followed by genera Acrobeloides, Ditylenchus, Chiloplacus and Cervidelus. Ten genera of plant parasitic nematodes were recorded: Bitylenchus (with prevalence of B. dubius), Helicotylenchus, Heterodera (with absolute prevalence of H. humuli), Geocenamus, Longidorella, Longidorus (only L. elongatus), Merlinius (with prevalence of M. brevidens), Paratylenchus and Pratylenchus. Low population densities of predators and omnivores, low values of the community indices (MI, ΣMI, SI, and CI), and high values of NCR, EI, and PPI/MI ratio indicated disturbed nematode communities in hop gardens and bacteria-dominated decomposition pathways in the soil food web.

Orchard floor management effect on soil free-living nematode communities

Soil Research ◽  
2021 ◽  
Author(s):  
Gil Eshel ◽  
Adrian Unc ◽  
Roey Egozi ◽  
Efrat Shakartchy ◽  
Tirza Doniger ◽  
...  
Keyword(s):  
Free Living ◽  
Nematode Communities ◽  
Orchard Floor Management ◽  
Free Living Nematode ◽  
Management Effect

scholarly journals Distribution pattern of free living nematode communities in the eight Mekong estuaries by seasonal factor

2013 ◽  
Vol 4 (1) ◽  
pp. 28-33
Author(s):  
Quang Xuan Ngo ◽  
Ngoc Chau Nguyen ◽  
Dinh Tu Nguyen ◽  
Van Lam Pham ◽  
Ann Vanreusel
Keyword(s):  
Distribution Pattern ◽  
River System ◽  
Multivariate Techniques ◽  
Wet Season ◽  
Free Living ◽  
Estuarine Area ◽  
Nematode Communities ◽  
Seasonal Factors ◽  
Free Living Nematode ◽  
Seasonal Factor

The temporal variation of nematode communities in eight mouth stations of the Mekong River system was investigated in order to compare the change between the dry and the wet season. The nematode data was analysed by multivariate techniques such as SIMPROF, MDS, ANOSIM and SIMPER in the software PRIMER v.6 – PERMANOVA.  Our results showed that average dissimilarity between seasons of the nematode communities in each station was high. Seasonal factor did not affect strongly their distribution pattern. Dominant genera Desmodora and Oncholaimellus usually occurred in the sand stations and Parodontophora and Halalaimus were characteristic for the silty group in both seasons. The spatial variations in this estuarine area have an influence that is larger than seasonal factors. Sự phân bố theo thời gian của quần xã tuyến trùng sống tự do vùng cửa sông Mekong được nghiên cứu nhằm đánh giá sự khác biệt của chúng trong mùa mưa và mùa khô. Dữ liệu của tuyến trùng được xử lý và phân tích đa biến như SIMPROF, MDS, ANOSIM và SIMPER bằng phần mềm PRIMER v.6 – PERMANOVA. Kết quả nghiên cứu cho thấy sự khác biệt theo mùa trong quần xã tuyến trùng tại mỗi điểm là khá lớn nhưng yếu tố mùa không ảnh hưởng gì tới mô hình phân bố của chúng. Một số giống ưu thế trong nền đáy cát như Desmodora and Oncholaimellus trong khi đó Parodontophora và Halalaimus thích nghi nền bùn sét phù sa vẫn hiễn diện trong cả 2 mùa. Kết quả nghiên cứu cũng cho thấy sự biến động trong không gian ở đây lớn hơn sự biến động về mùa vụ.

scholarly journals Effect of heavy metals on soil nematode communities in the vicinity of a metallurgical plant in North Slovakia

2015 ◽  
Vol 52 (3) ◽  
pp. 252-260 ◽  
Author(s):  
P. Šalamún ◽  
V. Hanzelová ◽  
D. Miklisová ◽  
T. Brázová
Keyword(s):  
Stress Responses ◽  
Industrial Pollution ◽  
Pollution Source ◽  
Soil Nematode ◽  
Free Living ◽  
Nematode Communities ◽  
Generic Composition ◽  
Free Living Nematode ◽  
Nematode Diversity ◽  
Remote Sites

Abstract The effect of industrial pollution from chromium ferroalloys production on soil free-living nematode assemblages, c-p groups and generic composition was investigated along 7-km transect. From trace elements (Cr, Cu, Ni and Pb), only chromium exceeded the thresholds for uncontaminated soils (10 mg.kg-1) near the pollution source. In contrast mobilizable fraction of Cr has increased with the distance from the pollution source and was found to be positively correlated with Cox, soil pH, and moisture. Generic richness (nematode diversity) was also higher at remote sites. The low contamination has no significant impact on the nematode communities as illustrated by the c-p groups composition and balanced community structure. Widely applied ecological indices SI and EI also proved maturing ecosystem without any significant stress responses

Effects of increasing levels of pharmaceutical penicillin G contamination on structure of free living nematode communities in experimental microcosms

2015 ◽  
Vol 40 (1) ◽  
pp. 215-219 ◽  
Author(s):  
Ahmed Nasri ◽  
Soufiane Jouili ◽  
Fehmi Boufahja ◽  
Amor Hedfi ◽  
Ezzeddine Mahmoudi ◽  
...  
Keyword(s):  
Penicillin G ◽  
Free Living ◽  
Nematode Communities ◽  
Free Living Nematode

scholarly journals Quantifying the Contribution of Entire Free-Living Nematode Communities to Carbon Mineralization under Contrasting C and N Availability

PLoS ONE ◽  
2015 ◽  
Vol 10 (9) ◽  
pp. e0136244 ◽  
Author(s):  
Mesfin Tsegaye Gebremikael ◽  
Hanne Steel ◽  
Wim Bert ◽  
Peter Maenhout ◽  
Steven Sleutel ◽  
...  
Keyword(s):  
Carbon Mineralization ◽  
N Availability ◽  
Free Living ◽  
Nematode Communities ◽  
Free Living Nematode ◽  
C And N

scholarly journals Changes in soil free-living nematode communities and their trophic composition along a climatic gradient

2012 ◽  
Vol 02 (02) ◽  
pp. 79-89 ◽  
Author(s):  
Tal Levi ◽  
Chen Sherman ◽  
Stanislav Pen-Mouratov ◽  
Yosef Steinberger
Keyword(s):  
Climatic Gradient ◽  
Free Living ◽  
Nematode Communities ◽  
Free Living Nematode
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