Consequences of variation in species diversity in a community of root-feeding herbivores for nematode dynamics and host plant biomass
Article Abstract:
The effects on the temporal dynamics of each of the endoparasitic nematodes Meloidogyne maritima, Heterodera arenaria and Pratylenchus penetrans by the presence of the other two species are investigated. Results reveal that Meloidogyne maritima is suppressed, both in abundance and in time of first appearance in the new root layer, by the addition of the endoparasitic nematodes Heterodera arenaria and Pratylenchus penetrans, while the other two are not affected.
Publication Name: Oikos
Subject: Environmental issues
ISSN: 0030-1299
Year: 2005
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A seasonal alternation of coherent and compensatory dynamics occurs in phytoplankton
Article Abstract:
Long-term data from Lake Constance found that a reduction in grazing pressure and relaxed competition for nutrients during winter and spring generates coherent dynamics among edible and less edible phytoplankton. During summer and fall, when both grazing pressure and nutrient limitation is present, edible and less edible phytoplankton exhibit compensatory dynamics.
Publication Name: Oikos
Subject: Environmental issues
ISSN: 0030-1299
Year: 2005
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Intriguing compensation by adult female spiders for food limitation experienced as juveniles
Article Abstract:
Foraging theory predicts that juvenile female tarantulas conditioned by food limitation would show greater foraging activity once matured. However, control females that had not changed foraging activity changed mass more rapidly than previously fed females, suggesting an increased rate of sexual cannibalism to compensate for earlier food limitation.
Publication Name: Oikos
Subject: Environmental issues
ISSN: 0030-1299
Year: 2003
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