Search results for "Tree"

Upper thermal threshold of Lepidurus arcticus (Branchiopoda, Notostraca) in lakes on the southern outreach of its distribution range

2021

Qvenild T, Fjeld E, Fjellheim A, Hammar J, Hesthagen T and Lakka H-K. 2021. Upper thermal threshold of Lepidurus arcticus (Branchiopoda, Notostraca) in lakes on the southern outreach of its distribution range. Fauna norvegica 41: 50–88. The Arctic tadpole shrimp Lepidurus arcticus has a circumpolar distribution and the Scandes (Fennoscandian Mountains) marks its southernmost limit in Europe. Within this area, 391 natural and 88 regulated lakes with L. arcticus have been identified, of which 87% are above the treeline. The lakes hosting L. arcticus decrease in altitude from south to north, which results from its temperature preferences. The majority of the locations are at a lower lake air t…

Pluskwiaki różnoskrzydłe (Hemiptera: Heteroptera) zimujące pod korą platanów klonolistnych Platanus x acerifolia w Polsce

2020

The paper presents the results of three-year studies conducted at 75 locations in Poland testing the use of the London planes for overwintering of true-bugs. Insects were sampled from the bark of trunks. Altogether 25 species of Heteroptera was recorded, including three invasive species that can considerable affect plane trees: Arocatus longiceps, Corythucha ciliata and Oxycarenus lavaterae.

Experiences of anamorphosis between poetry, architecture, and social context: interview with Boa Mistura

2020

The paper presents an interview with Boa Mistura, a multidisciplinary Madrid art collective that works all over the world and creates urban works based on the use of anamorphosis and the visual perception of urban spaces.The Boa Mistura projects are “site specific”, they are designed for a specific space and place. In the interview we explore the relationship between urban art and physical context, the way in which the works adapt to the surfaces and volumes on which they are made.The physical support of the works of Boa Mistura is often made up of separate and not coplanar surfaces and of volumes, sometimes disjointed, on which the murals recline. The same historiated surfaces determine the …

La obra desaparece, la imagen queda. El Hacking de Blu en Bolonia

2016

Revolutionary Struggle for Existence: Introduction to Four Intriguing Puzzles in Virus Research

2012

Cellular life is immersed into an ocean of viruses. Virosphere forms the shadow of this cell-based tree of life: completely dependent on the tree for existence, yet, the tree is equally unable to escape its ever evolving companion. How important role has the shadow played in the evolution of life? Is it a mere ethereal partner or a constitutive factor? In this chapter four puzzles in virus research are taken under the scope in order to probe some of the intriguing ways by which viruses can help us understand life on Earth. These puzzles consider the origin of genetic information in viruses, viruses as symbiotic partners, the structural diversity of viruses and the role of viruses in the ori…

Weighted and unweighted distances based decision tree for ranking data

2018

Preference data represent a particular type of ranking data (widely used in sports, web search, social sciences), where a group of people gives their preferences over a set of alternatives. Within this framework, distance-based decision trees represent a non-parametric tool for identifying the profiles of subjects giving a similar ranking. This paper aims at detecting, in the framework of (complete and incomplete) ranking data, the impact of the differently structured weighted distances for building decision trees. The traditional metrics between rankings don’t take into account the importance of swapping elements similar among them (element weights) or elements belonging to the top (or to …

Quando Gilgameš taglia i “cedri”. Gli alberi nell’immaginario mitologico mesopotamico

2021

In the Sumerian and Akkadian mythological literature, the ruler of the city of Uruk, Gilgameš, uproots and/or cuts down trees on several occasions: the ḫalub-tree (mahaleb cherry) linked to the goddess Inanna and the eren (juniper)/erēnu (cedar) trees of the Forest guarded by Ḫuwawa. These trees should be understood as elements of a wider "wilderness", with which they share a powerful and ambiguous ontological otherness, as opposed to the city and the country of Sumer. In order to become useful, this otherness must be conducted in the city and subject to processes of organization. This article illustrates the symbolic implications of the uprooting, cutting down and subsequent transport of t…

Streetworking - pomoc, praca i pasja w jednym

2015

Ocena stanu zdrowotnego drzew w warunkach wybranych siedlisk miasta Kępno

2016

W latach 2012–2013 na obszarze miasta Kępno prowadzono badania, których celem było okre- ślenie stanu zdrowotnego drzew rosnących na 9 wybranych obszarach, o różnych warunkach siedliskowych. Kondycję zdrowotną drzew określano za pomocą skali zdrowotności opracowanej przez J. Dudę. Obserwacji poddano łącznie 210 drzew należących do 26 gatunków występujących w obrębie parku miejskiego, parku 700-lecia, małego parku przy ul. Szpitalnej, alei przy ulicach: H. Sienkiewicza, Dąbrowskiego i W. Sikorskiego oraz skwerów znajdujących się przy ulicach Lipowej, Dąbrowskiego, a także przy ul. H. Sawickiej. Do najliczniej występujących gatunków należały: kasztanowiec pospolity Aesculus hippocastanum stan…

Stan zdrowotny i zagrożenia drzew na terenie wybranych siedlisk miasta Oświęcim

2016

Celem przeprowadzonych badań (w 2011 r.) było określenie stanu zdrowotnego oraz zagrożeń drzew rosnących na terenie Oświęcimia. Analizą objęto 5 obszarów różniących się między sobą warunkami siedliskowymi. Kondycję zdrowotną drzew wyznaczono na podstawie skali zdrowotności opracowanej przez J. Dudę. Badaniom poddano łącznie 424 drzewa należące do 22 gatunków. Najliczniejszymi gatunkami były: lipa drobnolistna Tilia cordata – 16,7% analizowanej grupy drzew i lipa szerokolistna Tilia platyphyllos (15,8%). Najmniejszy udział miał dąb szypułkowy Quercus robur (0,2%). Najwięcej, bo aż 76,2% drzew cechowało się dobrym stanem zdrowotnym, 22,4% złym, a 1,4% bardzo złym. Głównym czynnikiem ogranicza…