Modelled impact of Norway spruce logging residue extraction on biodiversity in Sweden

2011 ◽  
Vol 41 (6) ◽  
pp. 1220-1232 ◽  
Author(s):  
Anders Dahlberg ◽  
Göran Thor ◽  
Johan Allmér ◽  
Mats Jonsell ◽  
Mattias Jonsson ◽  
...  
Keyword(s):  
Norway Spruce ◽  
Woody Debris ◽  
Managed Forests ◽  
Logging Residues ◽  
Different Types ◽  
Logging Residue ◽  
A Minor ◽  
Different Levels ◽  
Primary Substrate

Logging residues are increasingly being extracted for bioenergy purposes. This study estimates how extraction of fine woody debris (FWD) may affect the overall habitat availability for 577 species of wood- and bark-inhabiting basidiomycetes, beetles, and lichens in Sweden using Norway spruce ( Picea abies (L.) Karst.) as their primary substrate. We combined modeling of (i) the amount of various types of woody debris available throughout a forest rotation in managed forests with (ii) a classification of each species’ associations with different types of wood. In three different regions, we compared a scenario with no logging residue extraction with three different levels of extraction. Our results suggest that the extraction may cause a 35%–45% reduction in aboveground FWD and a more than 20% decline in the potential amount of substrate for about 50% of the species (affecting basidiomycetes and beetles more than lichens). The intensified forestry during the last century has, however, steadily increased the production of FWD. Furthermore, no red-listed species is primarily associated with logging residues of Norway spruce. Therefore, the current situation in Sweden with extraction of 70% of Norway spruce FWD on 50% of the clearcuts probably constitutes a minor contribution to the regional extinction risks.

scholarly journals The Worshipers of Stones. Lacandon Sacred Stone Landscape

2020 ◽  
Vol 20 (1) ◽  
pp. 1-27
Author(s):  
Milan Kováč
Keyword(s):  
Archaeological Site ◽  
Theoretical Approaches ◽  
Different Types ◽  
Spiritual Energy ◽  
Different Levels ◽  
Rock Shelters

Abstract This article deals with the Lacandon cosmology, one of the few Maya cosmologies which has been exceptionally structured and until today, very well preserved. The present study is based mainly on associations related to stone. There are investigated the emic classifications of the Lacandon. Their classification of divine beings according to their location, and their connection to the stone houses, whether of natural or cultural origin. In the article are analyzed the most sacred Lacandon sites such as the rock shelters, cliffs and caves around the Lake Mensäbäk and Lake Yahaw Petha, as well as Yaxchilan, the archaeological site with the long tradition of Lacandon pilgrimages. The Lacandon believe in different types of transfer of spiritual energy through stone. The stones could be considered on different levels as the seat, heart or embodiment of deities. These relationships and contexts are very complex. The article tries to identify it and to offer some linguistic and theoretical approaches.

scholarly journals Evaluating evaluations: What different types of metapragmatic behaviour can tell us about participants’ understandings of the moral order

2018 ◽  
Vol 14 (1) ◽  
pp. 121-151 ◽  
Author(s):  
Bethan L. Davies
Keyword(s):  
Social Order ◽  
Moral Order ◽  
Daily Mail ◽  
Ordered Categories ◽  
The Social ◽  
Online Comments ◽  
Different Types ◽  
Linguistic Behaviour ◽  
Different Levels

Abstract Participant evaluations have been at the heart of recent discursive (im)politeness research, yet despite their importance, there has been little consideration of how we identify such behaviours and how we can substantiate their worth in an analysis. In this paper, it is proposed that we need to distinguish between different, ordered, categories of evaluation because these provide different levels of evidence for participants’ understandings of (im)politeness. Using online comments from Daily Mail articles relating to the Penelope Soto court hearings, I show that apparent agreements in the classification of linguistic behaviour as (im)polite can mask disagreements in the underlying rationales for those judgements. It is these rationales that provide the strongest warrant for analysts because they represent the ideological basis behind an individual’s understanding of politeness – why people should behave in this way. This links to Haugh’s (2013) use of ‘moral order’ and also Eelen’s (2001) key, but underdeveloped, notion of argumentativity. The rationale behind an individual’s judgement provides the argumentative link between metapragmatic behaviour and the social order. Classifications and positive/negative assessments of person are only clues to this underlying rationale, and need to be treated as such. Understanding these differences will assist analysts in assessing the ideological weight of metapragmatic behaviour and provide better-informed warrants for their analyses.

Wood-inhabiting cryptogams on dead Norway spruce (Picea abies) trees in managed Swedish boreal forests

1999 ◽  
Vol 29 (2) ◽  
pp. 178-186 ◽  
Author(s):  
Nicholas Kruys ◽  
Clas Fries ◽  
Bengt Gunnar Jonsson ◽  
Tomas Lämås ◽  
Göran Ståhl
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Boreal Forests ◽  
Woody Debris ◽  
Large Diameter ◽  
Managed Forests ◽  
Red Lists ◽  
Dead Trees ◽  
Utilization Patterns ◽  
Specific Species

We surveyed the quantity and quality of dead Norway spruce (Picea abies (L.) Karst.) trees and wood-inhabiting cryptogams in a managed boreal forest landscape in northern Sweden. Size and decay of dead trees was related to substrate utilization by wood-inhabiting species. Coarse woody debris (CWD) was surveyed along 34 strip transects. CWD and wood-inhabiting cryptogams were surveyed in eight circular plots at each site. A total of 6195 spruce CWD units occurred along strip transects and 809 spruce CWD units in circular plots. On average 2.2 m3/ha spruce CWD was found on the plots. The majority (63%) of the transect CWD units were <10 cm diameter and in early to intermediate decay stages. Sixty-eight wood-specific species of fungi, lichens, mosses, and hepatics occurred on the plots. Of these, 13 occurred on [Formula: see text]5% of the 809 CWD units surveyed for wood-inhabiting species. Eight species occur on the Swedish red lists, indicating that such species are indeed uncommon in managed forests. Red-listed species showed strong preferences for large diameter CWD and CWD in late decay stages, i.e., substrates that are poorly represented in managed forests. Frequently occurring species, however, showed utilization patterns that correspond with the distribution of the substrate types.

Logging-residue extraction does not reduce the diversity of litter-layer saprotrophic fungi in three Swedish coniferous stands after 25 years

2009 ◽  
Vol 39 (9) ◽  
pp. 1737-1748 ◽  
Author(s):  
Johan Allmér ◽  
Jan Stenlid ◽  
Anders Dahlberg
Keyword(s):  
Woody Debris ◽  
Abundant Species ◽  
Litter Layer ◽  
Natural Forests ◽  
Long Term Effects ◽  
Saprotrophic Fungi ◽  
Clear Cut ◽  
Logging Residues ◽  
Logging Residue

Logging residues, consisting of branches and treetops, are increasingly being extracted for biofuel purposes in Fennoscandia, thereby decreasing the availability of fine woody debris (FWD). Little is known about the importance of FWD and litter to fungal diversity, although they constitute the major components of dead organic matter in both managed and natural forests. We investigated the long-term effects of removing logging residue on the saprotrophic fungi community in the litter layer by using an experiment established 25 years ago, comprising stands with and without removal of clear-cut slash. The fungal communities were identified using terminal restriction fragment length polymorphism from standardized baits of wood and needles left in the litter layer for 30 months. A total of 74 fungal taxa were recorded. No differences in species richness or frequency of abundant species were detected between the stands with and without slash removal, suggesting that the extraction of logging residues has a negligible long-term impact on abundant saprotrophic fungi. Twenty-five of the 36 abundant species colonized wood and needles indiscriminately, while 10 species occurred exclusively on wood or needles and only one species mainly on wood. The importance of litter to certain wood-inhabiting fungi may therefore be underrated. The frequent records of Trichaptum abietinum (Dicks.) Ryvarden indicate that wood-inhabiting species may, surprisingly, be found in the litter layer.

Response of N2O emissions to logging residue piles of Norway spruce, Scots pine and silver birch

2020 ◽  
Author(s):  
Tiina Törmänen ◽  
Antti-Jussi Lindroos ◽  
Veikko Kitunen ◽  
Aino Smolander
Keyword(s):  
Norway Spruce ◽  
Tree Species ◽  
Forest Floor ◽  
Growing Season ◽  
N Losses ◽  
Clear Cut ◽  
Net Nitrification ◽  
Logging Residues ◽  
Soil Temperatures ◽  
Logging Residue

&lt;p&gt;Utilization of forest bioenergy is increasing; however, the overall environmental impacts of forest bioenergy utilization are not fully understood. Especially effects on N&lt;sub&gt;2&lt;/sub&gt;O emissions in mineral soils are less studied. With current harvesting practices, either whole-tree-harvest or stem-only-harvest, piles of logging residues are left on the forest floor. As a result, soil nitrogen (N) cycling processes can be accelerated on clear cut area under the piles, especially net nitrification. When N is transformed to more mobile form, the risk for N losses via nitrous oxide (N&lt;sub&gt;2&lt;/sub&gt;O) emissions from the forest floor may increase.&lt;/p&gt;&lt;p&gt;We studied how logging residue piles of three tree species, Norway spruce (Picea abies (L.) Karst.), Scots pine (Pinus sylvestris L.) and silver birch (Betula pendula Roth.), influence gaseous losses of N after clear-cut. A Norway spruce dominated mixed stand on a mineral soil site was clear-cut and N&lt;sub&gt;2&lt;/sub&gt;O emissions were monitored. There were four treatments; three tree species treatments consisting of 40 kg m&lt;sup&gt;-2&lt;/sup&gt; of fresh logging residues and control plot without residues as an additional treatment. Effects of logging residue piles on N&lt;sub&gt;2&lt;/sub&gt;O emissions were monitored over 4 growing season with closed chamber technic. Simultaneously soil temperatures were recorded over 2 growing season. Soil denitrification activity and the contribution of nitrification and denitrification to N&lt;sub&gt;2&lt;/sub&gt;O production were determined in laboratory experiments.&lt;/p&gt;&lt;p&gt;Logging residue piles lowered and balanced fluctuation of soil temperatures. N&lt;sub&gt;2&lt;/sub&gt;O fluxes peaked under the piles during the second and third growing season after the establishment of the piles; however inconsistent fluxes tended to be low. The production of N&lt;sub&gt;2&lt;/sub&gt;O was driven by both nitrification and denitrification processes, the proportion depending on the tree species. Our results indicate that logging residue piles accelerate N losses as gaseous form; however studies on the same field experiment shows that most of the N losses occur through soil percolation waters. Spruce residues tend to stimulate N&lt;sub&gt;2&lt;/sub&gt;O emissions longer compared to other tree species. There was a positive correlation with net nitrification and microbial biomass C (T&amp;#246;rm&amp;#228;nen et al. 2018, FORECO). These results have implications for sustainable and productive forest management practices and nutrition of re-growing vegetation.&lt;/p&gt;

A Multilevel Functional Classification of Relative Clauses

1994 ◽  
Vol 18 (2) ◽  
pp. 321-356 ◽  
Author(s):  
Edoardo Lombardi Vallauri
Keyword(s):  
Relative Clauses ◽  
Syntactic Structure ◽  
Semantic Content ◽  
Functional Classification ◽  
Prepositional Phrases ◽  
Different Types ◽  
Functional Features ◽  
Different Levels ◽  
Formal Features

Relative Clauses (RCs) have been described and classified according to many different criteria (Sect. 1). This article deals with the distinctions that can be observed within the variety of English RCs in terms of phonological shape, syntactic structure, semantic content, presuppositions and thematic structure of the utterance. A classification of RCs is proposed, which is based upon criteria of all different levels (Sect. 2). The aim is to provide a way to characterize as precisely as possible the functional features of any RC in correlation with its formal features. The classification is then applied to an analysis of the often stated equivalence between RCs and other kinds of linguistic constituents, leading to the recognition of the different types of RCs that are functionally equivalent to adjectives, participles, prepositional phrases and coordinated sentences (Sect. 3). A further application proposed is the comparison between the functional and formal features of English and Italian RCs (Sect. 4).

scholarly journals Categorizing expressive speech acts in the pragmatically annotated SPICE Ireland corpus

ICAME Journal ◽  
2015 ◽  
Vol 39 (1) ◽  
pp. 25-45 ◽  
Author(s):  
Patricia Ronan
Keyword(s):  
Speech Acts ◽  
Classroom Discussion ◽  
Expressive Speech ◽  
Face To Face ◽  
Different Types ◽  
Corpus Data ◽  
Different Levels

Abstract Expressive speech acts are one of the five basic categories of speech acts identified by Searle (1976). Expressives remain underresearched, though select categories of expressive speech acts, especially offering thanks and compliments, have received more extensive attention. An overall classification of expressive speech acts on the basis of corpus data has not yet been carried out. The current study provides a first survey of different types of expressive speech acts on the basis of three categories of spoken Irish English of different levels of formality: broadcast discussion, classroom discussion and face-to-face interaction. The data are extracted from the pragmatically tagged SPICE-Ireland corpus, a member of the International Corpus of English-family of corpora. The aim of the current study is to offer an overview and classification of expressives in the corpus material. Eight distinct subcategories of expressive speech acts are identified in this study. These categories are agreement, disagreement, volition, offering thanks, apologies, exclamations, expressions of sorrow and greetings.

scholarly journals The effect of forest management practices on deadwood resources and structure in protected and managed montane forests during tree-stand reconstruction after dieback of Norway spruce

2019 ◽  
Vol 25 (2) ◽  
pp. 249-256 ◽  
Author(s):  
Monika Staniaszek-kik ◽  
Jan Žarowiec ◽  
Damian Chmura
Keyword(s):  
Forest Management ◽  
Picea Abies ◽  
Norway Spruce ◽  
Management Practices ◽  
Woody Debris ◽  
Buffer Zone ◽  
Managed Forests ◽  
Forest Management Practices ◽  
Protected Forests ◽  
The Mean

Forest management practices can not only influence the amount of deadwood but also the proportions of particular elements. The goal of the present paper was to compare the amount, number of logs, stumps and snags and their dendrometrical parameters between the protected and managed forests in the Karkonosze Mts after a huge dieback of Picea abies. A massive decline of Norway spruce has been observed since the 1980s. The protected forests belong to Karkonosze National Park and the managed forests are situated in its buffer zone. In total, 1336 elements of coarse woody debris (CWD) were included in the study. They were distributed on 180 study plots (10 m × 10 m) that were randomly selected. Among the deadwood elements, spruce Picea abies dominated (80.3%) followed by beech Fagus sylvatica (14.3%). Logs were more numerous in the protected forest (57.3%) than in the managed forests (42.7%). Snags and stumps were more frequent – 56.9% and 52.8%, respectively, in the managed forests than in the protected forests – 43.1% and 47.2%, respectively. The mean volume of CWD was ca 114 m3 ha-1 in the protected forests whereas ca 70 m3 ha-1 was in managed forests.The mean number of stumps per study plot was higher in the managed forests. The mean volume and mean area of logs were higher in the protected forest as was the mean volume and diameter at breast height, whereas the height of the snags was higher in the managed forests. In terms of differences in the decomposition of deadwood between the two types of forests, the mean weighted degree of decay on a five-degree scale amounted to 2.9 in the protected forests and 2.7 in the managed forests. A larger amount of deadwood as well as a greater volume and surface area are very important for nature conservation because deadwood can function as a niche for many saproxylobiont organisms. The forest management practices and especially the weak conditions of spruce lead to a larger number of snags in a managed forest due to the reconstruction of tree-stands and the removal of deadwood by foresters.

Dual stain kit for the microscopic gram classification of ocular infection bacteria

1993 ◽  
Vol 51 ◽  
pp. 248-249
Author(s):  
Jacob S. Hanker ◽  
Dale N. Holdren ◽  
Kenneth L. Cohen ◽  
Beverly L. Giammara
Keyword(s):  
Contact Lenses ◽  
Ocular Infection ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
Gram Staining ◽  
Ocular Infections ◽  
Different Types ◽  
Culture Positive ◽  
Increased Susceptibility

Keratitis and conjunctivitis (infections of the cornea or conjunctiva) are ocular infections caused by various bacteria, fungi, viruses or parasites; bacteria, however, are usually prominent. Systemic conditions such as alcoholism, diabetes, debilitating disease, AIDS and immunosuppressive therapy can lead to increased susceptibility but trauma and contact lens use are very important factors. Gram-negative bacteria are most frequently cultured in these situations and Pseudomonas aeruginosa is most usually isolated from culture-positive ulcers of patients using contact lenses. Smears for staining can be obtained with a special swab or spatula and Gram staining frequently guides choice of a therapeutic rinse prior to the report of the culture results upon which specific antibiotic therapy is based. In some cases staining of the direct smear may be diagnostic in situations where the culture will not grow. In these cases different types of stains occasionally assist in guiding therapy.

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