Search results for "conservation."
showing 10 items of 1994 documents
Predicting species richness of wood-inhabiting fungi, epiphytic bryophytes and lichens based on stand structure and indicator species
2015
Maailmanlaajuinen monimuotoisuuden vähentyminen on ollut suuri huolenaihe jo useiden vuosikymmenten ajan. Lauhkeat lehtimetsät ovat yksi eniten ihmisen vaikutuksesta kärsineistä biomeista ja eteenkin vanhat, luonnontilaiset metsät ovat vähentyneet huolestuttavasti. Ilmaston ja maisemallisten tekijöiden lisäksi metsän historia, häiriödynamiikka, metsätalous ja ekologinen jatkuvuus vaikuttavat metsän rakenteelliseen monimuotoisuuteen ja näin ollen myös lajirunsauteen. Monet lajiryhmät ovat kuitenkin huonosti tunnettuja ja vaikeasti havaittavissa, eikä lopullisia syitä lajin häviämiseen alueelta pystytä varmasti sanomaan. Tutkimukseni tarkoitus oli selvittää, mitkä elementit metsän rakenteessa…
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…
Data from: The interplay of landscape composition and configuration: new pathways to manage functional biodiversity and agro-ecosystem services acros…
2019
[Usage Notes] Martin et al_2019_datatables Data used in Martin et al. (2019) compiled from 49 studies and 1,515 landscapes across Europe. Includes data on the abundance of arthropod species per site and data on pollination, natural pest control and yields in crops across Europe. Martin et al_2019_data tables_300319.xlsx Martin et al_2019_traits database Functional traits data for 2088 species (morphospecies, individuals) from 144 arthropod families sampled in agricultural landscapes across Europe. All traits are categorical and based on published literature or expert knowledge. They are described in Table 1 and Appendix S1 of Martin et al. (2019). The traits included are: feeding habit ('Fu…
Norme dal patrimonio culturale per la trasformazione e lo sviluppo sostenibile. Sperimentazione applicata al Piano del Colore delle Isole Egadi
2020
L’arcipelago delle isole Egadi, all'estremità occidentale della Sicilia, custodisce un patrimonio architettonico, paesaggistico e ambientale di grande valore. Dal difficoltoso rapporto tra la popolazione insediata e un ambiente per molti versi ostile, è stato forgiato nei secoli un paesaggio eccezionale, frutto di condizioni estreme di sopravvivenza condizionate dalle esigue risorse locali come la pesca del tonno, l'estrazione della pietra da costruzione e l'agricoltura. L’intero arcipelago è oggi soggetto a vincolo paesaggistico per l’alto valore dei suoi elementi costituenti che si configurano, nella loro interezza, come beni culturali. La texture e le cromie della pietra locale, una calc…
IL FASCICOLO DEL MONUMENTO COME EFFICACE STRUMENTO DI PREVENZIONE E CURA PROGRAMMATA DEL PATRIMONIO ARCHITETTONICO
2010
The study introduces a search developed in 2008-2009 to set a protocol of study of the monuments to facilitate the action of prevention of the architectural patrimony. The software allows to perform a punctual control of the state of health of the monuments and to act in case of necessity at the right moment. The wise man develops him with an introduction on the condition of the restoration in our time pointing out some distorted aspects in the consideration of the guardianship of the cultural patrimony. The second part is devoted to the brief history of the architectural prevention up to the 1964 Venice Paper. The third part introduces to the actuality of the prevention and the last one he…
Architettura “cannibale” : nuovi progetti e lacerti di distruzioni
2019
The essay focuses on a list of architectures that preserve and sometimes flaunt parts of previous buildings, destined for demolition. This text explore different motivations and practices that can justify them preservation. Even if the randomness of the events directs towards responses that take into account unexpected economic difficulties, a persistent scepticism towards harmony and completeness emerges in many histories, as well as intriguing symbolic components.
PROCESSO CONSERVATIVO E SIGNIFICATIVITà UN APPROCCIO METODOLOGICO PER LA PROGETTAZIONE DEI SISTEMI DI PROTEZIONE NEI SITI ARCHEOLOGICI/CONSERVATION P…
2018
Patrimonio culturale in generale e dei beni archeologici in particolare, in ragione della loro duplice natura (materiale e immateriale) e coerentemente con l’interesse della Cultura tecnologica per la centralità di quegli aspetti di processo che sono determinanti per una loro adeguata valorizzazione e ampia fruizione, il presente contributo propone un modello di valutazione per capire ‘cosa’ conservare e ‘per- ché’ nell’ottica di uno sviluppo sostenibile, ancor prima di ‘come’ farlo, consentendo una più chiara lettura e una più agevole interpretazione delle complesse relazioni esistenti fra le preesistenze archeologiche, il contesto naturale e i sistemi antropici aggiunti. Il modello di val…
Innovative and Applied Research in Biology: Proceedings, Vol. 2
2020
The collection contains SCIENTIFIC articles on the topics of the LU 78 conference reports. The main focus is on innovative and applied research in biology and interdisciplinary fields.
Generalized wave propagation problems and discrete exterior calculus
2018
We introduce a general class of second-order boundary value problems unifying application areas such as acoustics, electromagnetism, elastodynamics, quantum mechanics, and so on, into a single framework. This also enables us to solve wave propagation problems very efficiently with a single software system. The solution method precisely follows the conservation laws in finite-dimensional systems, whereas the constitutive relations are imposed approximately. We employ discrete exterior calculus for the spatial discretization, use natural crystal structures for three-dimensional meshing, and derive a “discrete Hodge” adapted to harmonic wave. The numerical experiments indicate that the cumulat…
Current Social and Rangeland Access Trends among Pastoralists in the Western Algerian Steppe
2021
International audience; In the western Algerian steppe, the public authorities have carried out actions aimed at rural development (agricultural development programs) and combating desertification (grazing reserves) to counter the significant and rapid loss of vegetation cover of pastures by overgrazing, and the consequent impacts on local livelihoods. In the Rogassa area, these actions have impacted land tenure and the ancestral and collective way of land use and access. These changes have caused transformations in lifestyle and pasture management. This research aims to characterize how such changes are affecting local pastoralists and what their perceptions are about them. A selective sam…