Search results for " Forest"
showing 10 items of 1940 documents
Forest structural elements and bryophyte species richness in managed forest landscape
2013
Elektroniskā versija nesatur pielikumus
The toughest animals of the Earth versus global warming: Effects of long-term experimental warming on tardigrade community structure of a temperate d…
2021
Abstract Understanding how different taxa respond to global warming is essential for predicting future changes and elaborating strategies to buffer them. Tardigrades are well known for their ability to survive environmental stressors, such as drying and freezing, by undergoing cryptobiosis and rapidly recovering their metabolic function after stressors cease. Determining the extent to which animals that undergo cryptobiosis are affected by environmental warming will help to understand the real magnitude climate change will have on these organisms. Here, we report on the responses of tardigrades within a five‐year‐long, field‐based artificial warming experiment, which consisted of 12 open‐to…
Kääpien kannalta ennallistamalla tuotettu lahopuu ei täysin vastaa luontaista lahopuuta
2014
Species richness of polypores can be increased by supplementing dead wood resource into a boreal forest landscape
2019
1. To prevent local species extinction and to counteract population declines, we must ensure species have access to resources they require for life. This can be done through ecological restoration where previously depleted resources are reintroduced. If the restoration is conducted as a one-off action in a large area, it resembles a natural resource pulse, which should lead to increased abundance of individuals, accompanied possibly by increased species richness. Species–energy relationship and underlying theory enable predictions about how different features of resource pulses affect species richness. 2. We conducted a large-scale, controlled, randomized and replicated field experiment to …
Riconoscere e interpretare i paesaggi dei sistemi arborei tradizionali: i casi studio della maremma laziale e del monte Etna
2014
Starting from the Sixteen’s of the past century it occurred in Italy, although with differences among the plane areas and the marginal hill or mountain ones, a deep transformation in the physiognomy of arboriculture following new architecture and new management criteria developed for an industrialized agriculture. Indeed, some traditional agricultural landscapes have maintained their functional and structural complexity. The present study refers to an interdisciplinary methodology developed for identifying and mapping the traditional landscapes through an approach based on multitemporal analysis of land use maps, visualization of land use persistences and evaluation of their representativen…
Adaptive forest governance to face land use change impacts in Italy: a review
2015
Il cambiamento dell’uso del suolo è uno dei driver principali della riduzione della resilienza ecosistemica, così come della perdita di biodiversità e approvvigionamento di servizi. Rappresenta una sfida peculiare, specialmente negli ambienti mediterranei, dove i fenomeni di abbandono e ricolonizzazione naturale stanno minacciando in modo sempre più crescente la capacità delle foreste di fornire benefici alle comunità locali. In queste condizioni, il sistema di governance forestale è chiamato a bilanciare gli impatti del cambiamento dell’uso del suolo con l’assicurazione della salute e della stabilità degli ecosistemi forestali, al fine di garantire la sostenibilità a lungo termine degli am…
Diversità paesaggistica e multifunzionalità dei sistemi agro-forestali dell’Etna
2010
Il paesaggio dell’Etna è un complesso di paesaggi ricchi e diversissimi grazie alla estrema variazione di quote ed esposizioni che da sempre condizionano attività umane e crescita degli organismi; il cono vulcanico etneo rappresenta il principale rilievo e contemporaneamente la formazione geologica più giovane dell’Isola. Tra la fascia basale, maggiormente soggetta ad intesificazioni colturali e quella montana a carattere forestale domina la fascia pedemontana caratterizzata da un’importante valenza paesaggistica e biologica. Allo scopo di prevenire la degradazione o peggio ancora la perdita di questi particolari agroecosistemi è necessario colmare le lacune conoscitive sulla classificazion…
New tree monitoring systems: from Industry 4.0 to Nature 4.0
2019
This is the accepted version of the article "New tree monitoring systems: from Industry 4.0 to Nature 4.0" published as final paper in Annals of Silvicultural Research Volume 43, Issue 2, 2019, Pages 84-88, http://dx.doi.org/10.12899/asr-1847 Abstract - Recently, Internet of Things (IoT) technologies have grown rapidly and represent now a unique opportunity to improve our environmental monitoring capabilities at extremely low costs. IoT is a new system of thinking in which objects, animals or people are equipped with unique identifiers and transfer data to a network without requiring human-to-human or human-to-computer interaction. IoT has evolved from the convergence of wirele…
Tree species recognition in species rich area using UAV-borne hyperspectral imagery and stereo-photogrammetric point cloud
2017
Abstract. Recognition of tree species and geospatial information of tree species composition is essential for forest management. In this study we test tree species recognition using hyperspectral imagery from VNIR and SWIR camera sensors in combination with 3D photogrammetric canopy surface model based on RGB camera stereo-imagery. An arboretum forest with a high number of tree species was used as a test area. The imagery was acquired from the test area using UAV-borne cameras. Hyperspectral imagery was calibrated for providing a radiometrically corrected reflectance mosaic, which was tested along with the original uncalibrated imagery. Alternative estimators were tested for predicting tree…
The summertime Boreal forest field measurement intensive (HUMPPA-COPEC-2010): an overview of meteorological and chemical influences
2011
This paper describes the background, instrumentation, goals, and the regional influences on the HUMPPACOPEC intensive field measurement campaign, conducted at the Boreal forest research station SMEAR II (Station for Measuring Ecosystem-Atmosphere Relation) in Hyyti¨al¨a, Finland from 12 July–12 August 2010. The prevailing meteorological conditions during the campaign are examined and contrasted with those of the past six years. Back trajectory analyses show that meteorological conditions at the site in 2010 were characterized by a higher proportion of southerly flow than in the other years studied. As a result the summer of 2010 was anomalously warm and high in ozone making the campaign rel…