Search results for "terrestrial environment"
showing 3 items of 33 documents
The oceanic state: a conceptual elucidation in terms of modal contact
2012
Despite its lengthy history in psychoanalysis, the psychological origins, essential features and value of the oceanic state remain open to dispute. This ambiguity has come at a cost to the clarity of theoretical discussions on the topic. In working towards a conceptual elucidation, the author maintains that there are three primary accounts of the oceanic state: the metaphysical one of Romain Rolland, the developmental one of Sigmund Freud, and the cognitive-perceptual one of Anton Ehrenzweig. Based on the notion of modal contact, he argues that the accounts share a general theoretical structure that establishes as the necessary criterion for all oceanic states the loosening of ego boundarie…
Carbon stock increases up to old growth forest along a secondary succession in Mediterranean island ecosystems.
2019
The occurrence of old-growth forests is quite limited in Mediterranean islands, which have been subject to particularly pronounced human impacts. Little is known about the carbon stocks of such peculiar ecosystems compared with different stages of secondary succession. We investigated the carbon variation in aboveground woody biomass, in litter and soil, and the nitrogen variation in litter and soil, in a 100 years long secondary succession in Mediterranean ecosystems. A vineyard, three stages of plant succession (high maquis, maquis-forest, and forest-maquis), and an old growth forest were compared. Soil samples at two soil depths (0-15 and 15-30 cm), and two litter types, relatively undec…
Intraguild interactions between egg parasitoids: window of opportunity and fitness costs for a facultative hyperparasitoid.
2013
We investigated intraguild interactions between two egg parasitoids of Nezara viridula (L.) (Heteroptera: Pentatomidae), Ooencyrtus telenomicida (Vassiliev) (Hymenoptera: Encyrtidae) and Trissolcus basalis (Wollaston) (Hymenoptera: Platygastridae), as the former has the potential to be a facultative hyperparasitoid of the latter. We assessed the suitability of N. viridula eggs for the development of O. telenomicida as a function of egg age when they were unparasitized, or had been attacked by T. basalis at different times prior to exposure to O. telenomicida females. Ooencyrtus telenomicida can exploit healthy N. viridula host eggs up to 5 days of age, just prior to the emergence of N. viri…