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  • Journal Of Nematology

 

research-article

Agricultural intensification and urbanization negatively impact soil nematode richness and abundance: a meta-analysis

this study was to assess the influence of agricultural intensification and urbanization on nematode richness and abundance compared to forest and grassland ecosystems through meta-analysis of published literature on a global scale. The richness and abundance of nematodes were compared using different moderator levels or explanatory variables. We hypothesized that overall richness, overall abundance, and richness and abundance of nematodes of each trophic group and c-p guild are greater in forest

Satyendra K. Pothula, Parwinder S. Grewal, Robert M. Auge, Arnold M. Saxton, Ernest C. Bernard

Journal of Nematology , 1–17

research-article

Nematode trophic structure in the phytotelma of Neoregelia cruenta (Bromeliaceae) in relation to microenvironmental and climate variables

daily air temperature were the only environmental factors that affected nematode abundance and diversity. The first study in a neotropical region focused on the tank bromeliads Canistropsis billbergioides (Schult.f.) Leme and Nidularium procerum Lindm, in a rainforest in Brazil (Robaina et al., 2015). In both bromeliads, bacterial and hyphal feeders also predominated over carnivores, plant and unicellular eukaryote feeders. Nematode abundance (total and per trophic group) varied seasonally and among

Alexandre M. Almeida, Ricardo M. Souza

Journal of Nematology , 1–12

research-article

Effects of integrated application of plant-based compost and urea on soil food web, soil properties, and yield and quality of a processing carrot cultivar

(http:nematode.unl.edu/konzlistbutt.htm). Nematodes were then assigned to herbivore, bacterivore, fungivore, omnivore, or predator trophic group (Yeates et al., 1993; Okada and Kadota, 2003) and a colonizer persister (c-p) groups (Bongers and Bongers, 1998). Nematode community analysis Shannon–Weaver diversity index [H′ = −Σpi (ln Pi)], where Pi is the proportion of genus taxa in the nematode community n (Shannon and Weaver, 1949), Hill’s diversity N1 [exp(H′)] and N0 (genera richness = number of all genera in the

A. Habteweld, D. Brainard, A. Kravchencko, P. S. Grewal, H. Melakeberhan

Journal of Nematology , 1–17

research-article

Nematicide efficacy at managing Meloidogyne arenaria and non-target effects on free-living nematodes in peanut production

. Nematodes were extracted from soil by sucrose-centrifugation (Byrd et al., 1976) and the nematode community (plant-parasitic and free-living nematodes) was quantified morphologically using an inverted light microscope. Nematode abundances by trophic group (herbivores, fungivores, bacterivores, and omnivores plus predators) were calculated and analyzed (Yeates et al., 1993). Abundances of individual genera that were consistently present in most plots were also analyzed. Genera analyzed included the

Zane J. Grabau, Mark D. Mauldin, Alemayehu Habteweld, Ethan T. Carter

Journal of Nematology , 1–10

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