Search results for "Ecos"
showing 10 items of 1898 documents
Perception des adventices par les agriculteurs, conseillers, techniciens d’expérimentation et chercheurs en France
2019
Une enquête nationale ayant recueilli 1320 réponses (839 analysées dans cet article), dont 56% d'agriculteurs, 26% de conseillers, 14% de techniciens/expérimentateurs et 4% de chercheurs, a permis de sonder leur perception des adventices. Les effets positifs des adventices ont moins d’importance aux yeux des sondés que leurs effets négatifs. Pour les effets négatifs, la perte de rendement (nuisibilité primaire directe) et l’augmentation du stock semencier (nuisibilité secondaire) sont les plus importants. Entre 60% et 80% des personnes enquêtées jugent importants les effets négatifs sur la conduite des travaux agricoles et la perte de qualité la récolte. Les effets positifs « sources de pol…
Recensione di C. Lo Casto, "L'essere come dynamis. Heidegger interprete del Sofista di Platone attraverso Aristotele, Edizioni ets, Pisa 2019, pp. 108
2020
Envisioning Information Systems Support for Business Ecosystem Architecture Management in Public Sector
2018
Based on our research concerning Finnish national enterprise architecture (EA) adoption in long run, we discuss here how EA concept and tool are to be developed to support business ecosystem and organization design. Our research context indicates, beyond a federal government or a state one, that even a single municipality, like a city concern, can be perceived as an ecosystem of its sectoral domains, subsidiaries etc. We outline a vision of an overall ontologybased, shared EA repository for the-whole-of-government current state descriptions. We specify the central design principles and functional requirements for such a system and illustrate some potential use cases of it. The study suggest…
New Metropolitan Perspectives Transition with Resilience for Evolutionary Development
2023
This open access book conveys attention to the theme of transition towards resilience and sustainability and its evolutionary perspective that emphasizes the complexity and uncertainty that governments and society are called to address in response to the ongoing challenges. "New Metropolitan Perspective Post COVID Dynamics: Green and Digital Transition, between Metropolitan and Return to Villages’ Perspectives”, 25–27 May 2022, Reggio Calabria, Italy. The papers included in the book are grouped around the following main topics: the envisaged transition towards resilience and sustainability; the relevance of the planning dimension for defining sustainable development pathways and managing co…
Understanding Mentoring Within an Ecosystem of Practices
2020
The aim of this article is to introduce an ecosystemic approach to mentoring, inspired by the theory of ecologies of practices (Kemmis, Edwards-Groves, Wilkinson, & Hardy, 2012). It is suggested that relationships between practices and their environment resemble in many ways the relationships between natural organisms and ecosystems. From this perspective, mentoring is understood as a social practice that exists in the midst of other social practices and derives its essential qualities and its existence from its relation to other practices. The theory of ecologies of practices is based on the conception of practices as ‘living entities’. From the perspective of ecologies of practice, pr…
Diversifying crop rotations with temporary grasslands: potentials for weed management and farmland biodiversity
2010
Fruchtfolgen können dazu dienen, die kontinuierliche Selektion von Unkrautarten zu verhindern, die an eine bestimmte Kultur angepasst sind. Dies könnte dem Unkrautmanagement, der Einsparung von Herbiziden, und der Biodiversität dienen. Heutige, sehr einfache Furchtfolgen könnten durch mehrjährige Futterkulturen diversifiziert werden. Die Einflüsse solcher mehrjähriger Kulturen auf Unkräuter wurden in vier Ansätzen untersucht : 1) Vegetationsaufnahmen auf 632 Feldern in Westfrankreich zeigten, dass die Unkrautzusammensetzung zwischen mehrjährigen Futterkulturen und einjährigen Kulturen stark variiert. Der Vergleich von Feldern vor, während und nach mehrjährigen Futterkulturen legte nahe, das…
A lift in snail's gut provides an efficient colonization route for tardigrades.
2022
La città e la dimensione ambientale: il paradigma dei servizi ecosistemici nella pianificazione alla scala urbana
Polyester microplastic fibers in soil increase nitrogen loss via leaching and decrease plant biomass production and N uptake
2022
Abstract Microplastic contamination, like other global change factors, can induce effects on ecosystem functions and processes, affecting various soil biophysical properties. However, effects of such contaminants on nutrient cycles in agroecosystems are still poorly understood. We here performed two pot experiments to investigate the effect of polyester microplastic fibers (PMFs) on soil physical properties, nitrogen cycle, and plant performance in a maize-based agroecosystem. Moreover, we followed the N loss via leaching in soil contaminated or not with PMFs by simulating heavy rainfall events that mimic a future scenario of climate change. Our results show that soil contaminated with PMFs…
Mind the gap: Treefalls as drivers of parental trade-offs
2015
Abstract Tree‐fall gaps are small‐scale disturbances whose formation, colonization, and role in forest dynamics are well documented, but whose effects on animal ecology are still greatly overlooked, except for studies comparing species richness of gaps 6+ months old to that in the closed canopy. Other factors associated with the invasion of fresh tree‐fall gaps such as animal breeding adaptations have been largely neglected. I studied the immediate (within hours and days) arrival of the poison frog Dendrobates tinctorius in new tree‐fall gaps to examine the dynamics of their invasion in relation to tadpole rearing. I found that rearing sites are occupied sooner and tadpoles deposited at hig…