Teses / dissertações sobre o tema "Forestry Board"

Sveriges natur förknippas mer än något annat med skog. Två tredjedelar av landets drygt 40 miljoner hektar landareal täcks av skog. Av 27,1 miljoner hektar skogsmark (inklusive skyddad mark) är 23,3 miljoner hektar produktiv skogsmark. Andelen privata skogsägare uppgår till ca 330 000 personer och äger hälften av all skogsmark i Sverige samt levererar drygt 60 % av den totala råvaran till skogsindustrin. Skogsstyrelsens, och skogsvårdstyrelsernas, främsta roll har alltsedan bemyndigandet 1903 varit rådgivning till skogsägarna, ett viktigt styrmedel för att kunna förebygga lagingripanden och mildra lagstiftningen. I början av 1960-talet väcktes det diskussioner, som sedan dess har varit aktuella, om: att jordens resurser är ändliga och hur vi förvaltar dem. Det mest turbulenta årtiondet för svensk skogsvårdpolitik var 1970-talet och den tidiga miljörelaterade kritiken mot skogsbruket var inte underbyggd av forskning om miljötillståndet i skogen, utan skapades av en allmän opinion i samhället. Flertalet av de intervjuade skogsägarna uppgav att rådgivning varit viktiga vägledare för dem i deras skogsvårdsbeslut, även om det i enstaka fall fått negativa konsekvenser. Miljöhänsynens avtryck i den enskilda skogsägarens skogsvård följer i stort sett den historiska utvecklingen, det är dock inte entydigt om det i första hand berott på Skogsvårdsstyrelsens kampanjer och rådgivning. Resultatet visar att rådgivning i miljöhänsyn påverkar skogsägarnas beslut i sina val av beståndsåtgärder. Den viktigaste slutsatsen som kan dras av studien är att rådgivning, utbildning och kunskaper är de avgörande framgångsfaktorerna i det fortsatta miljövårdsarbetet. Större hänsyn till den enskilde skogsbrukarens äganderätt, erfarenheter och kännedom om sin mark är något som både myndigheter samt den allmänna opinionen bör iaktta och värdesätta.
About two-thirds of Swedens land area is covered by forest. Half of the total forest land is owned by private forest owners.The purpose of this study was to describe the decades before and after the environmental concerns became self-evident in Swedish forestry, and from a forest policy perspective elucidate the introduction of environmental concerns in forest management. Interviews with private forest owners and field studys was conducted to identify specific occurences of conservation that could be linked to advisory service from The National Board of Forestry since the 1970´s. The result shows that guidance, education and skills are crucial success factors for the continuence of conservation and sustainable forestry, but also greater consideration and respect for the private forest owners property rights, experiences and knowledge.

Abstract A study is made of the dealings of the local people with the Board of Forestry in matters connected with the crown forests of Northern Finland in the 19th century, setting out from the creation of the Forestry Board, the establishment of its ways of working and its local impact on settlement and sources of livelihood. This state of tension was perpetuated by delays in implementation of the Great Partition and by the presence of cottagers and pioneer settlers living in the crown forests. One major question was whether these forests were intended primarily to serve the purposes of state forestry or of settlement in the north of Finland. An account is given of the attitude of the Forestry Board towards the traditional modes of forest use typical of the crown forests, including swidden cultivation, tar burning and the cutting of wood for domestic use. New information is presented on the part played by the Forestry Board in regulating swidden cultivation and tar burning. Another topic not previously addressed is illicit exploitation of the crown forests. This was common practice in the Tornio and Ii river valleys in particular, to the extent that forest wardens on the border with Sweden were supplied with pistols to deal with this threat. The sale of timber cut illegally from the crown forests to sawmills in both Finland and Sweden was widespread, and it was common in the Ii Valley to trade in the timber which the Forestry Board allowed private persons to cut as a form of relief to the poor. The grazing of livestock in crown forests was another bone of contention between Forestry Board officials and the local people, the controversy over cows and what damage they actually did to the crown forests continuing well into the 20th century and ultimately remaining unresolved. Similar disputes arose over spruces carrying beard lichen, on which the reindeer fed, once the demand for spruce pulpwood increased. The actions taking by the foresters in accordance with the law and the demands of their office aroused much criticism in Finland, and this polemic spread to the newspapers, the Diet and the literature of the day. It was the fate of the Forestry Board and its officials to become an object of suspicion and even downright hatred. Their interference with traditional sources of livelihood, modes of land use and ancient rights of exploitation was apt to give rise to friction and maintain an attitude of mistrust on both sides. The present work provides new explanations for the author Pentti Haanpää's famous saying, "Beware of fine gentlemen – and of foresters most of all", and modern forest management conflicts can be appreciated and understood better in the light of these events
Tiivistelmä Olen tutkinut metsähallituksen ja pohjoissuomalaisten kanssakäymistä ja suhteiden muotoutumista Pohjois-Suomen kruununmetsissä 1800-luvulla. Lähtökohtina ovat metsähallinnon perustaminen, toiminnan vakiinnuttaminen sekä metsähallinnon vaikutus paikallisiin elinkeinoihin ja asutustoimintaan. Kangertelu metsänhoidossa ja liiketoiminnan aloittamisessa sekä yhteenotot paikallisen väestön ja lehdistön kanssa sävyttivät metsähallinnon ensimmäisten vuosikymmenten toimintaa. Hidastunut isojako sekä kruununmetsiin hakeutunut asutus, kruununmetsätorpat ja uudistilat, ylläpitivät jännittynyttä suhdetta. Suuri kysymys oli, olivatko kruununmetsät valtion metsätaloutta vai Pohjois-Suomen asutusta varten. Tutkimuksessa myös selitetään, miten metsähallinto suhtautui perinteisiin, juuri kruununmetsiin suuntautuneisiin metsänkäyttötapoihin, kuten kaskenpolttoon, tervatalouteen ja puun kotitarvekäyttöön. Metsähallinnon osuus kaskeamisen ja tervanpolton ohjailussa nousee esille uudella tavalla. Kruununmetsien haaskaajat eli varkaat ovat myös ennen tutkimaton teema. Kruununmetsien varastaminen oli yleistä erityisesti Tornionjokilaaksossa ja Iijokilaaksossa. Ruotsin rajan läheisyydessä toimineet metsänvartijat jopa aseistettiin pistoolein metsävarkaita vastaan. Varastetun puutavaran toimittaminen niin Suomen kuin Ruotsin sahoille oli maan tapa. Iijokilaaksossa turvauduttiin metsähallinnon käsikauppa- eli lupapuihin, joista tuli köyhäinavun, mutta myös keinottelun muoto. Keinottelu varsinaisilla valtionmailla eli haku uudistilalliseksi vain puutavaran vuoksi, kuuluu myös Pohjois-Suomen metsähistoriaan. Eläinten laiduntaminen kruununmetsissä myös asetti metsähallinnon virkamiehet ja paikallisen väestön vastakkain. Vielä 1900-luvulla lehmä kruununmetsissä oli kiistan kohteena. Lopullista selvyyttä siihen, mitä vahinkoa lehmä teki kruununmetsille, ei saatu koskaan. Lisäksi porojen käyttämät luppopuut eli naavakuuset hiersivät suhteita tilanteessa, jossa kuusipuulle oli syntymässä kysyntää paperipuuna. Metsänhoitajat saivat kritiikkiä toimiessaan viran ja lain vaatimalla tavalla Pohjois-Suomessa. Metsäherroja polemisoitiin sanomalehdissä, valtiopäivillä ja kirjallisuudessa. Metsähallinnon ja metsäherrojen osana oli 1800-luvulla olla epäluulon ja suorastaan vihamielisyydenkin kohteena. Puuttuminen perinteisiin elinkeinoihin, maankäyttötapoihin ja muinaisiin tapaoikeuksiin synnytti kitkaa suhteisiin ja ylläpiti epäluuloa molemmin puolin. Pentti Haanpään teksti "Herroja on epäiltävä aina – metsäherroja yli kaiken" on saanut uutta, selittävää ainesta ympärilleen. Nykyiset metsäkonfliktit avautuvat paremmin ja tulevat ymmärrettävimmiksi 1800-luvun metsähistorian kautta

This research study explored the appropriate sustainable governance management systems for South African socio-economic conditions. This was achieved by investigating the current governance and management of water boards in performing their business and water services provisioning at municipal level. Municipalities are the third sphere of government in South Africa and are found at local levels of governance. They are businesses that provide running water as legislated by the Constitution of the Republic of South Africa, 1996. Water boards are public institutions established in terms of the Water Services Act, 108 of 1997 (WSA) and listed as Schedule 3 part B: National Government Business Enterprise in terms of the Public Finance Management Act 29 of 1999. They are accountable to the national government through the Department of Water Affairs. Their responsibility is to support municipalities where water-provisioning challenges are eminent. They report annually to national parliament on their performance within a specific financial year. Water boards are currently able to perform their operations in selected jurisdictions as contracted by municipalities. They are struggling in managing and governing their water business while striving to achieve improvements in water service coverage, operating efficiency and service delivery. The aim of the research study was to investigate areas affecting the sustainability of governance management systems for water boards in relation to the improvement of service delivery in South Africa. The analysis of age and gender factors and the conditions affecting governance are explored. The research used the qualitative and quantitative methods to analyse the research questions. Prior to the commencement of the study, the researcher performed an intensive desktop study involving the use of dated and recently published material related to governance and management of the water institutions in developed and developing countries. During the desktop study, national and international accredited journals were prioritised to obtain related and relevant similar information to the water governance and management of water institutions. In addition, a case study was undertaken in Ficksburg in which water boards provided an intervention in resolving the water crisis, since the provision of water is a basic service at local government. This area experienced both water shortage and a poor quality of water. With regard to qualitative methodology, participatory forums were used to delineate the research context and premise. The study population consisted of individuals who were in the business of water boards with special reference to water management and board of directors for a population of 1 000. Of the 500 questionnaires sent out, 419 were returned. The data were analysed using the statistical software package, Statistical Package for Social Sciences (SPSS). The results and recommendations are presented based on the identified objectives of the study. The study’s findings provide information for transformation and improvement in the performance of water boards in South Africa when striving for sustainability in management and governance. The findings reveal the need for improvements in the involvement of females in the business of the water boards. The findings confirm the outcomes of previous studies regarding the slow implementation of affirmative action and transformation processes as required by legislation. Furthermore, the results reveal that the factors and conditions affecting sustainability of the water boards need to be prioritised to improve the management and governance aspects of water boards. These include the appropriate selection of members of the boards of directors, water boards' committees that are guided by legislation in their operations and the maintenance of proper financial management (collection of revenue, implementation of appropriate financial strategies and striving for positive clean audit). Water boards are encouraged to strengthen their intergovernmental relations in order to make their mandate known across all spheres of government. Service delivery should be approached “from source to tap and tap to source” to promote high-quality provision of water. The water boards should be accountable to the municipalities for the provision of delegated operations. The Department of Water Affairs exercises an oversight role to ensure the sustainable provision of the services. However, the study concludes that without a strong management and a sustainable governance approach, water boards will not be able to carry out its water developmental mandate. The practical framework that was developed in this study provides management and governance tools for sustained provisioning of water to advance transformational and developmental needs and the application of legislations. The results in the study have a direct impact on the codes of practice and regulations on employment equity in implementing the Employment Equity Act of 1998, Intergovernmental Relations Act of 2005, Companies Act of 2008, National Water Act of 1998, and Water Services Act of 1997. Therefore, the practical implementation of this framework will enhance water as a transformational and developmental feature in addressing the social, environmental and economic services.

Current knowledge about processes that generate long-distance dispersal of plants is still limited despite its importance for persistence of populations and colonization of new potential habitats. Today wild large mammals are presumed to be important vectors for long-distance transport of diaspores within and between European temperate forest patches, and in particular wild boars recently came into focus. Here we use a specific habit of wild boar, i.e. wallowing in mud and subsequent rubbing against trees, to evaluate epizoic dispersal of vascular plant diaspores. We present soil seed bank data from 27 rubbing trees versus 27 control trees from seven forest areas in Germany. The mean number of viable seeds and the plant species number were higher in soil samples near rubbing trees compared with control trees. Ten of the 20 most frequent species were more frequent, and many species exclusively appeared in the soil samples near rubbing trees. The large number of plant species and seeds – approximated > 1000 per tree – in the soils near rubbing trees is difficult to explain unless the majority were dispersed by wild boar. Hooked and bristly diaspores, i.e. those adapted to epizoochory, were more frequent, above that many species with unspecialised diaspores occurred exclusively near rubbing trees. Different to plant species closely tied to forest species which occur both in forest and open vegetation, and non-forest species were more frequent near rubbing trees compared with controls. These findings are consistent with previous studies on diaspore loads in the coats and hooves of shot wild boars. However, our method allows to identify the transport of diaspores from the open landscape into forest stands where they might especially emerge after disturbance, and a clustered distribution of epizoochorically dispersed seeds. Moreover, accumulation of seeds of wetness indicators near rubbing trees demonstrates directed dispersal of plant species inhabiting wet places between remote wallows.
Das aktuelle Wissen über Prozesse, die zur Fernausbreitung von Pflanzen führen, ist trotz ihrer Bedeutung für das Überleben von Populationen und die Besiedlung neuer potenzieller Habitate noch immer sehr begrenzt. Wildlebende Großsäuger sind heutzutage vermutlich wichtige Vektoren für den Ferntransport von Diasporen innerhalb und zwischen den einzelnen Waldflächen in Mitteleuropa, und speziell das Wildschwein (Sus scrofa L.) spielt dabei offenbar eine herausragende Rolle. Wir nutzen hier ein spezifisches Verhalten des Wildschweins – Suhlen im Schlamm und nachfolgendes Scheuern an sogenannten Malbäumen – um die epizoochore Ausbreitung von Gefäßpflanzen-Diasporen einzuschätzen. Dargestellt werden die Ergebnisse von Samenbank-Untersuchungen von 27 Malbäumen im Vergleich zu 27 Kontrollbäumen aus sieben Waldgebieten in Deutschland. Sowohl die mittlere Zahl lebensfähiger Samen als auch die Artenzahl waren höher in Bodenproben neben Malbäumen. Zehn der 20 in der Samenbank verbreitetsten Pflanzenarten hatten hier ihren Schwerpunkt, und viele Arten kamen ausschließlich in den neben Malbäumen gewonnenen Proben vor. Die große Zahl von Pflanzenarten und Samen – zumindest > 1000 pro Baum – im Boden an Malbäumen lässt sich nur durch die Aktivität der Wildschweine erklären. Mit Haken oder Borsten ausgestattete, d.h. an Epizoochorie angepasste Diasporen waren häufiger, aber auch viele Arten mit unspezialisierten Diasporen kamen ausschließlich in der Samenbank bei Malbäumen vor. Anders als weitgehend an Wald gebundene Pflanzenarten waren solche, die sowohl im Wald und im Offenland vorkommen, sowie nicht im Wald vorkommende Arten häufiger neben Malbäumen als neben Kontrollbäumen. Diese Befunde stimmen mit denen früherer Untersuchungen von Diasporenladungen im Fell und in den Hufen geschossener Wildschweine überein. Unsere Methode erlaubt darüber hinaus aber die Identifizierung des Diasporentransports aus dem Offenland in die Waldbestände, wo sie insbesondere nach Störungen keimen dürften, sowie einer ungleichmäßigen Verteilung epizoochor ausgebreiteter Diasporen. Außerdem zeigt die Akkumulation von Samen von Nässezeigern neben den Malbäumen eine gezielte Ausbreitung nasse Standorte bewohnender Pflanzenarten zwischen entfernt gelegenen Suhlen.

A diesel particulate filter (DPF) is designed to physically remove diesel particulate matter or soot from the exhaust gas of a diesel engine. Frequently replacing DPF is a waste of resource and waiting for full utilization is risky and very costly, so, what is the optimal time/milage to change DPF? Answering this question is very difficult without knowing when the DPF is changed in a vehicle. We are finding the answer with supervised machine learning algorithms for detecting anomalies in vehicles off-board sensor data (operational data of vehicles). Filter change is considered an anomaly because it is rare as compared to normal data. Non-sequential machine learning algorithms for anomaly detection like oneclass support vector machine (OC-SVM), k-nearest neighbor (K-NN), and random forest (RF) are applied for the first time on DPF dataset. The dataset is unbalanced, and accuracy is found misleading as a performance measure for the algorithms. Precision, recall, and F1-score are found good measure for the performance of the machine learning algorithms when the data is unbalanced. RF gave highest F1-score of 0.55 than K-NN (0.52) and OCSVM (0.51). It means that RF perform better than K-NN and OC-SVM but after further investigation it is concluded that the results are not satisfactory. However, a sequential approach should have been tried which could yield better result.

In which ways can the process of trimming dispersion coated board products be optimized so as to reduce material waste and increase production efficiency? This is the question that this master thesis report seeks to answer. In paper production, alot of waste is generated when cutting production reels into customer reels. Some material waste are necessary in order to ensure good quality, however a large amount of the wastecould be reduced if the cutting process was to be optimized. During this project, carried out at a forest company, a mathematical optimization model was developed in order to reduce waste and save costs. This model is based on a cutting stock problem using column generation approach. It provides as its output cutting patterns and an optimal allocation of rolls for production purposes, which implies minimizing the number production rolls needed.The visualization of the results could also be used to achieve optimal stock levels, and easier keep track on how to use the material available in stock. Findings show that there are potential savings to be done. Simulations suggest an implementation of this model could result in material savings of around 7 %. This could also translateto environmental savings in CO2, where every decrease of one tonne material equals to adecrease in CO2emissions of 500 kg

This study is one of the first of its kind to examine actual consumer purchasing decisions for forest products certified by the Forest Stewardship Council (FSC). Consumer purchasing was examined based on the presence or absence of a promotional brochure and a price premium for red oak and yellow poplar surfaced-four-sides (S4S) boards. This research also compared typical demographic factors for purchasers and non-purchasers of FSC certified S4S boards. Finally, the study examined subscales from a previously designed ecoscale to determine whether two of the subscales were effective predictors of the sale of FSC certified boards. Due to significant interactions between the price premium and the promotional brochure, Analysis of Variance (ANOVA) statistics could not be interpreted. However, these strong interactions indicate that these two factors are interdependent. Examining respondents' understanding of the trade term, "certification," showed that most did not understand the term as it is used by the forest products industry. Respondents did not link certification directly with the environment, but rather stated that it was a measure of quality excellence. This illustrates that the forest products industry must use more specific descriptions that consumers will understand when referring to certification. Based on survey results from this study, a large proportion of respondents who paid more for FSC certified boards were unable to recall whether they had cost any more than the alternative product. Respondents of this study were not found to have a high level of confidence in the environmental claims of any group. These included forest products companies, industry associations, and independent organizations. The subscales of a previously designed ecoscale were not found to be strong indicators of a respondents' likelihood to purchase FSC certified S4S boards. This project should be seen as a starting point for additional researchers interested in studying actual purchase decisions of consumers of environmentally conscious products, such as certified hardwood boards.
Master of Science

La biodiversitat que observem resulta d'una complexa història evolutiva d'interaccions entre els organismes. Les interaccions planta-animal en son un cas paradigmàtic, des de relacions antagòniques a mutualistes, però determinar-ne el resultat pot ser complicat, com en el cas de la dispersió de llavors per rosegadors. Moltes especies de rosegadors son àvids consumidors de llavors, però també actius dispersors, inclús emmagatzemant-ne per al posterior consum, potencialment afavorint la dispersió i regeneració de l’espècie amb la que interactuen. Per això molts estudis s'han centrat en aquesta interacció, tot i que poques vegades s'ha considerat la influència que pot tenir la gran variabilitat temporal i espacial del context on es dóna. L'objectiu principal d'aquesta tesi és estudiar com els patrons de dispersió/depredació d'aglans per rosegadors poden estar influïts per la variabilitat del context en el que té lloc i determinar com pot afectar el reclutament de les espècies sobre les que actuen. Amb aquest fi hem utilitzat un model d'estudi paradigmàtic dels ambients Mediterranis: el ratolí de bosc, Apodemus sylvaticus, com a dispersor i depredador d'aglans en un bosc mixte de roure (Quercus pubescens) i alzina (Quercus ilex) al Parc Natural de Collserola. Hem mostrejat intensivament la població de rosegadors a la zona d'estudi i altres variables ambientals (producció i abundància d'aglans, coberta de vegetació, furgades de senglar), així com el reclutament de plàntules de Quercus. També hem analitzat els patrons de dispersió/depredació d'aglans per rosegadors mitjançant l'enregistrament del seu comportament i el seguiment d'aglans marcats. Els nostres resultats indiquen que les dinàmiques demogràfiques d' A. sylvaticus estan condicionades per la disponibilitat d'aglans, amb importants davallades estivals en l'abundància degut a la sequera i l'escassetat d'aliment. A més, les diferències fenològiques en la producció d'aglans entre roure i alzina també afecten les decisions dels rosegadors, que canvien les seves preferències per l'espècie més abundant. Per altra banda, hem documentat l'efecte de nivells tròfics superiors (carnívors) en el destí de les llavors mitjançant canvis en el comportament dels rosegadors, així com efectes de competidors per aquest recurs (senglars i conspecifics) en els patrons de dispersió/depredació d'aglans. L'activitat dels rosegadors també juga un paper important en l'establiment de plàntules de Quercus, com a dispersors, movent principalment aglans de sota els arbusts cap a zones mes obertes en aquests boscos d’elevada densitat, però també com a "lladres" d'aglans, reduint les oportunitats de reclutament per a la planta. De fet, la distribució espacial de plàntules en la zona d'estudi està determinada principalment per la disponibilitat d'aglans, mentre que el possible efecte protector dels arbusts no té tanta importància com esperàvem prèviament, degut a les característiques del bosc (coberta arbòrea densa). Aquesta tesi documenta que la interacció entre planta i rosegadors pot ser molt variable depenent del context on es dóna, de manera que el paper dels rosegadors com a dispersors i depredadors d'aglans en boscos Mediterranis de Quercus pot diferir en funció de l'estructura del bosc (per exemple deveses vs. boscos tancats). Aquesta variabilitat temporal i espaial es deu principalment a la flexibilitat comportamental dels rosegadors, que adapten les seves decisions al context de cada lloc i moment. En canvi, hem documentat altres comportaments amb una tendència més fixa, com la preferència per llavors grans. En aquest sentit, aquests comportaments més fixes poden exercir pressions selectives importants sobre els trets vitals de la planta, mentre que comportaments més variables no tindran un efecte tant clar. Estudis futurs centrats en aquesta interacció entre planta i rosegadors haurien de tenir en compte aquesta variabilitat temporal i espacial, així com les interaccions assenyalades en el nostre estudi amb altres animals de la xarxa tròfica (carnívors i competidors).
Earth's biodiversity results from a complex evolutionary history of interactions among organisms. Plant-animal interactions are a paradigmatic example of such ecological relationships, from antagonistic to mutualistic relationships, although determining its result might be difficult, like in the case of seed dispersal by rodents. Many rodent species are avid seed consumers, but also active dispersers, caching seeds in burrows for further consumption, potentially contributing to the dispersion and regeneration of the species with which they interact. Thus, many studies have focused on this interaction, although the influence of the great spatial and temporal variability of the context where it occurs has not been generally considered. The main objective of this thesis is to assess how the acorn predation/dispersal patterns by rodents may be influenced by the contextual variability, and to determine how this variability might affect the recruitment of the species with whom they interact. To that end we have used a well-known study model paradigmatic of Mediterranean environments: the wood mouse, Apodemus sylvaticus, as seed predator and disperser of acorns in a mixed oak forest of Holm oak (Quercus ilex) and Downy oak (Quercus pubescens) in the Collserola Natural Park. We have intensively monitored the rodent population in the study area, some environmental factors (acorn production and abundance, vegetation cover, wild boar rooting), and oak’s seedling emergence. We have also analyzed the acorn predation/dispersal patterns of rodents by recording their foraging behaviour and monitoring tagged acorns. Our results show that the demographic dynamics of A. Sylvaticus are conditioned by the availability of acorns, with important population declines in the summers, due to the effects of drought and food scarcity. Moreover, the differences in seeding phenology between Q. ilex and Q. pubescens also affect rodent’s foraging decisions, as they change their seed preferences for the most abundant species. We have also documented an effect of upper trophic levels (carnivores) on seed’s fate by influencing rodent’s behaviour, as well as effects from competitors for that resource (wild boars and conspecifics) on the acorn predation/dispersal patterns. Rodent’s activity also plays an important role in oak’s seedling establishment, as seed dispersers, removing many acorns from under shrubs towards open sites in these close canopy forests, but also as seed pilferers, reducing the recruitment opportunities of oaks. In fact, the spatial distribution of oak seedlings in the study area is mainly determined by the availability of acorns, while the potential nursing effect of shrubs does not have such an important effect as we had previously anticipated, due to the forest characteristics (dense tree canopy). This thesis documents the great context dependent variability in the interaction among plants and rodents, so that rodent’s role as acorn predators and dispersers in Mediterranean oak forests may be very different according to the forest structure (e.g. savanah-like forests vs. close canopy forests). This spatial and temporal variability occurs mainly due to the behavioural plasticity of rodents, which adapt their foraging choices to the context of every place and moment. On the other hand, we have also documented other behaviours that show a rather fixed trend, such as the preference for bigger and sound acorns. In this sense, these more fixed behaviours might represent important selective pressures on the life history traits of the plants they interact with, while more variable behaviours will not have such clear effect. Further studies focussed on this interaction among plants and rodents should consider this great temporal and spatial variability, as well as the interactions with other animals of the trophic web shown in our study (carnivores and competitors).

The external dispersal ("epizoochory") of vascular plant diaspores (seeds and fruits) by roe deer and wild boar, i.e. the most common wild large mammals with a large home range in central Europe, was investigated in a 6.5-km² forest area in NE Germany dominated by mesic deciduous forests. The study involved brushing out the diaspores from the coats and hooves of 25 shot roe deer and nine wild boar. The results were compared with the forest vegetation of the study area. Whilst wild boar transported large amounts of various diaspores in the coat, the significance of roe deer for epizoochory was low due to their sleek fur and different behaviour compared to wild boar. Altogether, 55 vascular plant species were transported externally. Since only a limited number of seeds came from woodland habitats, the open landscape was at least as important as a source of attached seeds as the forest vegetation. Thus, most plant species occurring in the studied forest area, especially characteristic woodland herbs, showed no adaptations to epizoochorous dispersal, although being very abundant in the herb layer. We conclude that hoofed game play a particular role concerning the dispersal of ruderal and grassland species in the agricultural landscape of central Europe. However, the actual spread of some herb species in forests of northern Germany, e.g. Agrostis capillaris, Brachypodium sylvaticum, Deschampsia flexuosa, Galium aparine and Urtica dioica, may be mainly facilitated by wild ungulates. Though dispersal by large mammals is an important mechanism for long-distance dispersal of plants in general, our results suggest that most of the characteristic herb species of mesic deciduous forests have only low epizoochorous dispersal potentials. The implications for nature conservation and silviculture are discussed.
Die Ausbreitung von Gefäßpflanzen-Diasporen (Samen und Früchte) durch äußerliche Anhaftung ("Epizoochorie") an Rehen und Wildschweinen, den beiden häufigsten Schalenwild-Arten in Mitteleuropa, wurde im 6,5 km² großen Forst Brieselang bei Berlin (Bundesland Brandenburg) untersucht, in dem mesophile Laubwälder vorherrschen. Dazu wurden die Felle und Hufe von 25 geschossenen Rehen und neun Wildschweinen ausgekämmt und die Diasporen anschließend bestimmt. Die Ergebnisse wurden mit der Waldvegetation verglichen. Während Wildschweine große Mengen verschiedener Diasporentypen transportierten, war die Bedeutung von Rehen für die Ausbreitung von Pflanzen auf Grund des glatten Fells und der im Vergleich zum Wildschwein unterschiedlichen Verhaltensweisen wesentlich geringer. Insgesamt wurden 55 Phanerogamenarten epizoochor transportiert. Da nur ein kleiner Teil der ausgebreiteten Pflanzen Waldhabitate bevorzugt, war das Offenland eine mindestens ebenso wichtige Quelle anhaftender Diasporen wie die Waldvegetation. Die meisten Waldpflanzenarten wurden nicht ausgebreitet; insbesondere solche Arten, die ausschließlich in Wäldern wachsen, wurden nicht nachgewiesen. Viele Pflanzenarten sind – vermutlich auf Grund ihrer Diasporenmorphologie – weitgehend vom Transport ausgeschlossen, obwohl sie sehr häufig in der Krautschicht des untersuchten Waldes vorkommen. Daher ist Schalenwild in der Agrarlandschaft Mitteleuropas vermutlich vor allem für die Ausbreitung von Ruderal-, Segetal- und Grünlandpflanzen von Bedeutung. Die Ausbreitung einiger Pflanzenarten der Krautschicht in norddeutschen Wäldern z.B. Agrostis capillaris, Brachypodium sylvaticum, Deschampsia flexuosa, Galium aparine und Urtica dioica, könnte jedoch wesentlich auf Schalenwild zurückgehen. Obwohl Großsäuger insgesamt ein wichtiger Vektor für die Fernausbreitung von Pflanzen sind, zeigt unsere Studie, dass die meisten charakteristischen Waldbodenpflanzen mesophiler Laubwälder kaum ausgebreitet werden, also nur ein geringes epizoochores Ausbreitungspotenzial aufweisen. Die Bedeutung der Ergebnisse für den Waldnaturschutz und den Waldbau wird diskutiert.

I april-juli år 2010 undersöktes tre studieområden i mellersta Sverige avseende hur fördelningen av vildsvinsbök såg ut i dessa områden. Resultaten visade att vildsvinsbök främst återfanns i miljöer dominerade av tall-och granskog där åldern på träden låg runt 45-90 år, samt med fältskikt bestående av bärris, mossa eller gräs. På två utav de tre lokalerna påverkades inte arealen på bök av faktorer såsom trädartsammansättning, trädålder eller fältskikt men det fanns däremot korrelationer mellan dessa faktorer på en utav lokalerna. Vidare påverkades arealen på bök inte av populationstäthet eller hur lång tid vildsvin förekommit i området.
In April-July in 2010, three forest dominated areas in central Sweden were studied to investigate wild boar rooting habits. The results showed that rooting mainly occurred in pine-and spruce dominated habitats where tree-ages varied between 45-90 years old and with ground surface vegetation consisting of shrubs (blueberry/lingonberry), mosses and grass. In two of the three study areas the size of rooted areas was not affected by factors such as tree species composition, forest age or vegetation ground cover, but correlations between these factors were found in one of the areas. The size of rooted areas was not affected by the population density or the time with wild boar present in the area.

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The present study aimed to evaluate technically the feasibility of production of oriented strand board (OSB) of Eucalyptus benthamii Maiden et Cambage 13 years of age through different levels of resin and compositions of particles between the layers of the mattress. Therefore, the characterization of density and dimensional stability of solid wood by NBR 7190 (1997) was performed. The experimental design for the study on the OSB consisted of 8 treatments with four different compositions between the layers (30:40:30 , 20:60:20 , 25:50:20 and 100%) and two percentages resin (4 and 6%). Three panels were produced by treatment with dimensions of 49 x 42 x 1.5 cm, which were subjected to a cycle of hot pressing temperature 180 °C, pressure of 40 kgf/cm2 for a time of 8 minutes. The technological tests on panels were made according to the procedures of ASTM D1037 (1996) and DIN 52362 (1982). The statistical analysis used was a Factorial Analysis and Tukey Test at 95% probability, as well as the comparison with the minimum values specified in the standard CSA 0437 (1993). The results for the physical properties of solid wood, it has been density of 0.53 g/cm3 with mean value and the realization of high dimensional stability of the parts analyzed. Regarding physical properties of the panels, it was found that the average density was 0.63 g/cm3 and swells for 2 hours and 24 hours were 12,35 % and 34,43 %, respectively , which overcomes the maximum setting of 10 % to 24 hours of immersion in the standard CSA 0437 (1993). For mechanical testing bending strength uniformity were observed values of rupture and elastic modulus in the direction parallel module, however, in perpendicular direction, an increase of the values of strength and stiffness as it increased the amount of particles in the inner layer of the mattress. For internal bond, there was a strong influence of the increase in the percentage of resin, with an average value of 0.36 MPa, thus, only treatments with 6% resin reached the minimum values established by the referenced standard. The results of this study indicate that Eucalyptus benthamii can be an alternative for the production of oriented strand board (OSB), through adjustments to be made in the production process
O presente estudo teve por objetivo avaliar tecnicamente a viabilidade da produção de painéis OSB a partir de toras de Eucalyptus benthamii com 13 anos de idade por meio de diferentes teores de resina e composições de partículas entre as camadas do colchão. Para tanto, foi realizada a caracterização da massa específica e da estabilidade dimensional da madeira sólida por meio da NBR 7190(1997). O delineamento experimental para o estudo relativo aos painéis OSB foi composto por 8 tratamentos, com 4 diferentes composições entre as camadas (30:40:30, 20:60:20, 25:50:20 e 100%) e duas porcentagens de resina (4 e 6%). Foram produzidos 3 painéis por tratamento com dimensões de 49 X 42 X 1,5 cm, os quais foram submetidos a um ciclo de prensagem à quente de 180oC de temperatura, 40 kgf/cm2 de pressão por um tempo de 8 minutos. Os ensaios tecnológicos dos painéis foram feitos de acordo com os procedimentos da ASTM D1037 (1996) e da DIN 52362 (1982). A análise estatística adotada foi a Análise Fatorial e Teste de Tukey a 95% de probabilidade, bem como a comparação com os valores mínimos especificados na norma CSA 0437 (1993). Como resultado para as propriedades físicas da madeira sólida, tem-se a massa específica aparente básica com 0,53 g/cm3 de valor médio e a constatação da alta instabilidade dimensional das peças analisadas. Quanto às propriedades físicas dos painéis, constatou-se que a massa específica média foi de 0,63 g/cm3 e os inchamentos para 2 horas e 24 horas foram de 12,35% e 34,43%, respectivamente, o que supera o parâmetro máximo de 10% para 24 horas de imersão pela norma CSA 0437 (1993). Para os ensaios mecânicos de flexão estática, observou-se uma homogeneidade dos valores de módulo de ruptura e de módulo de elasticidade no sentido paralelo, no entanto, no sentido perpendicular, houve um aumento nos valores de resistência e rigidez à medida que se aumentava a quantidade de partículas na camada interna do colchão. Para ligação interna, verificou-se uma forte influência do aumento da porcentagem de resina nos resultados apresentados, com valor médio de 0,36 MPa, assim, somente os tratamentos com 6% de resina atingiram os valores mínimos estabelecidos pela norma referenciada. Os resultados deste estudo indicam que a madeira de Eucalyptus benthamii pode ser uma alternativa para a produção de painéis de partículas orientadas (OSB), mediante ajustes a serem realizados no processo produtivo

This dissertation shows that the forest Sami of Arvidsjaurbyn (the forest Sami community in Arvidsjaur) were actors on an economic, social and societal level. The parish of Arvidsjaur was founded by the Swedish state in the beginning of the 17th century. The dissertation is a source study. The primary area of investigation consists of the then existing Arvidsjaurbyn in Pite lappmark (the Sami region of Pite). With regard to economic and societal changes, comparative studies have been made of the forest Sami neighbours in the south, Uhmeåbyn (the forest Sami community in Ume lappmark), and the neighbours in the north, Jokkmokk and Sjokksjokk (forest Sami communities in Lule lappmark). Arvidsjaurbyn is unique as a research object, since the community consisted of no other Sami category but the forest Sami. They had cooperated under private management with each other and communicated with the state and the church for more than one hundred years before the first settler arrived (in 1757). Traditionally the forest Sami have been dependent on three industries, namely fishing, hunting and reindeer husbandry. In the 18th century the reindeer herding came to be dominant. The forest Sami showed that they could handle important issues in the encounter with the state and the church. Forest Sami lay assessors successfully defended the Sami community’s industries at the district court sessions. The economic differences among them were not great and the internal solidarity in the Sami community was strong. Arvidsjaurbyn was a Sami community with a considerable population increase 1750–1800. From the 1740s the Swedish state’s policy vis-à- vis the forest Sami became increasingly clear; they ought to pass on to the agricultural industry. The forest Sami were, however, not convinced to adhere to this state policy. Around 1800 the administration of lappskatteland (the taxation area of each forest Sami) came to be moved from the local district court to the county administrative boards, which was a considerable adversity for the forest Sami’s development potentialities. This dissertation is one of the few that problematizes the forest Sami in Sweden. It reveals a sustainable, cooperative, resilient and innovative society.
Denna avhandling om skogssamerna behandlar förändringarna i deras samhälle 1650–1800. Bland allmänheten är skogssamerna inte lika kända som fjällsamerna. En del forskning om skogssamerna har genomförts men då i sammanhang där den fjällsamiska forskningsdelen legat i förgrunden. I avhandlingen påvisas att skogssamerna hade kontroll på utvecklingen av sina näringar: De var därmed aktörer på en social och samhällelig nivå i samebyn, Arvidsjaurbyn. Omkring år 1800 skulle denna ordning, på grund av statliga åtgärder, komma att försvagas. Om vi hade kunnat besöka Övre Norrland omkring 1650 skulle vi ha träffat på skogssamer från Kemi lappmark i öster ned till skogslandet som omger Ångermanälven och dess biflöden i söder. Deras område gränsade mot fjällterrängen i väster och de uppodlade kustbygderna i öster. I dessa milsvida skogsområden var skogssamerna inbyggarna medan området säsongsvis nyttjades av kustbönderna för fiskets skull och av fjällsamerna för dess vinterbetesmarker. Skogssamernas kärnområde av idag utgörs av Arvidsjaurs och Malå kommuner med utlöpare in i Arjeplogs, Jokkmokks och Gällivare kommuner. Avhandlingen är en källstudie om skogssamerna 1650–1800. Källorna består av domböcker, skattelängder, befolkningstabeller, kyrkböcker, visitationsprotokoll och avräkningsböcker. Skogssamerna har studerats ned på individnivå varefter resultaten sammanförts, analyserats, generaliserats och diskuterats. Redan tidigt i avhandlingsarbetet stod det klart att lappskattelandet var en viktig del när förändringar i skogssamernas samhälle skulle undersökas. Undersökningsområdet omfattar dåvarande Arvidsjaurbyn i Pite lappmark där jämförande studier, med avseende på ekonomiska och samhälleliga förändringar, har gjorts med skogssamegrannarna i söder, Uhmeåbyn, och grannarna i norr, Jokkmokk och Sjokksjokk. Arvidsjaurbyn är unik som forskningsobjekt eftersom byn bestod av enbart skogssamer. Som skogssamer hade man i egen regi samarbetat med varandra och kommunicerat med stat och kyrka i över hundra år innan förste nybyggaren anlände. Den var egen socken och eget kyrkligt, rättsligt och administrativt område. Marknaden i Arvidsjaur var av gammalt datum och under 1700-talet kom marknadshandeln att utvecklas. Mot slutet av 1600-talet kom den fjällsamiska nomadismen att sätta sina spår i vinterskogslandet. Under första halvan av 1700-talet kom skogssamerna att stämma fjällsamer inför tinget för betesintrång. Dessa avtog avsevärt fram till 1800. Den fjällsamiska rennomadismen kom ändå inte att påverka skogssamerna särskilt mycket. De blev viktigare som skogssamernas förebilder för hur man ökar numerären i sin renhjord. Under 1750-talet inleddes en mer omfattande kolonisation av lappmarkerna. Arvidsjaurbyn blev den sista av de svenska lappmarkernas skogssamebyar som koloniserades (från och med 1757). Skogssamerna i Åsele, Ume, Pite och Lule lappmarker påverkades olika mycket av nybyggarnas intåg. Efter 1750 kom de flesta av skogssamernas lappskatteland i Uhmeåbyn i Ume lappmark att gå förlorade till nybyggarna med den påföljden att Uhmeåbyn (nuvarande Lycksele kommun) i praktiken hade upphört omkring år 1800. Skogssamebyarna norr däremot utvecklade sina näringar. Dit hörde Arvidsjaurbyn som ännu finns kvar (nuvarande skogssamebyarna Malå, Mausjaur, Östra Kikkejaur och Västra Kikkejaur). Förklaringarna till denna förmåga till överlevnad är onekligen intressanta. Skogssamerna har traditionellt lutat sig mot tre näringar nämligen fiske, jakt och renskötsel. Omkring 1650 dominerade jakt och fiske. Under 1700-talet kom renskötseln att bli dominerande. I den förändringen gick skogssamerna sin egen väg. Efter 1750 började man dela på lappskattelanden och renhjordarna ökade i storlek – en hållbar näringsutveckling som blev starten för näringen av idag. Arvidsjaurbyn var en av samebyarna med en befolkningsökning 1750–1800. Nybyggarna i Arvidsjaur kom inte att påverka skogssamernas näringar på ett allvarligt sätt förrän efter år 1800. Samtidigt omvandlades skogssamernas samhälle och man såg till att behålla sitt inflytande på olika arenor. Skogssamerna var en viktig del av det kyrkliga sammanhanget, skogssamiska nämndemän försvarade med framgång deras näringar, de visade att de kunde hantera viktiga frågor i mötet med staten. De ekonomiska skillnaderna dem emellan var inte stora och den inre sammanhållningen i samebyn var stark. I avhandlingen konstateras att skogssamerna var aktörer, inte offer. De hade därmed en maktposition att hantera framförallt i sina näringsfrågor. Att det var så berodde på deras förmåga till självorganisering och självstyre. Den svenska staten formade Arvidsjaurbyn som en administrativ enhet från 1600- talets början och in i 1700-talet och ska under 1700-talet ses som en strukturell maktfaktor. Reformen av lappskatten genomfördes 1695. Under 1740-talet ändrades förutsättningarna för fattiga samers flyttningar till den av svenska bönder bebodda bottenvikskusten. Nu krävdes att de hade ett arbete dit de kom och att flyttningen skulle vara reglerad hos myndigheterna i avflyttnings- och inflyttningssocknen. Under inledningen av 1750-talet drogs gränsen mellan bönderna vid bottenvikskusten och lappmarken upp. Den innebar framförallt att det nu var slut med kustböndernas fiskefärder till sjöarna i lappmarkerna. Dock: Under senare delen av 1700-talet utvecklades den svenska statens ståndpunkt om skogssamernas näringar att de borde övergå till jordbruksnäringen. Skogssamerna lät sig dock inte övertygas. Först senare, in på 1830- talet, kom skogssamer i Arvidsjaurbyn, att i någon omfattning, bli nybyggare. En statlig negativ makt i betydelsen att det blev en betydande motgång för skogssamerna genomdrevs in på 1800-talet då lappskattelandsärenden flyttas från det lokala tinget till länsstyrelserna. Ändå var tiden fram till år 1800 gynnsam för skogssamerna. Det århundrade som följde skulle komma att innehålla stora och svåra utmaningar som inte blev mindre av att skogssamernas inflytande, på grund av statliga åtgärder, skulle komma att minska.
Sammanfattning på umesamiska Dáhta doktårbargguo lúvletjij bijrra sijttá tjielgastit syöbradahkan virduodiemiev 1650–1800 tjuöhtiejäbij gaskasne. Lúvletjij viessuomvyjjarh eäh almatjijste leäh aktta åhppásh guh váriegij vyjjarh. Múvtieme uhtsadiebmie leä gujt dahktuvvame valla dalluojge váriegij ienabe guh lúvletjij viessuome leä guövddielisne urrame. Jis máhttiet lúvlijmeh mannat Bijjie-Nuorttalándasne 1650 lúhkien bájkiesne lúvlijmeh gávnadame Giebmasámieniednaman lúvletjijgújme luldnie, juhkh vumatlándasne vyössan, jah sämij dan lándasne juhka gidd’ Jeanoen jah dan lijggietjätsij gujga ållá. Jilliele dan dáhvuon leä bijjielándda jah lúvlielde jis mierradáhvuoj búnddedädtjij åhkierh. Dajn vuavdnájen vijđies vumadahkijne lúvletjh vyössan. Jábien äjgij mehte búndh dáhvuojde guelleman dehte ednen jah váriegh jis dálvvieguohtuoman dehte. Lúvletjij guovdátjedáhvuo gåvdnije údne Árviesjávrien jah Málágan kommuvnijne jah dassa lissiene iednamah ájáj Árjepluovien, Jåhkåmåhkien jah Jiellevárien kommuvnij sissnie. Dáhta doktårbargguo leä gåldijeuhtsadiebmie lúvletjij bijrra jäbijne 1650–1800. Gåldijieh leäh duobmuogirjieh, skáhttietsiehkuodissah, viesáttjållash, jessembuörddiegirjieh jah åsiestemegirjjieh. Uhtsadiebmie leä dáhktuvvame gidd’ vihtties almatjij rájjáje jah die leäh áj miŋŋiele sjadduoh såpkatuvvame jah nålggastemijne åbbaláhkáje giehtjadallatuvvame. Juo árrade uhtsademebarguosne däjđuv, lij ge åhpies gúktie skáhttielándh lijjen ájnas åssie lúvletjij syöbradahkan virduodemij jessemijste. Muv ájdnasummas uhtsademedáhvuo leä dållatje Árviesjávrien tjeälddie Byöhđaman sámieniednamisne. Leäb ájáj bednegevyrrarij jah syöbradahkan guohtáje lúvletjijde årjiene jeäbddastallame, Ubmejentjieldiesne, jah kránnájde nuortane, Jå- hkåmåhkien jah Sjuokksjåhkån tjieldijne. Árviesjávrien tjeälddie leä ájdnalágátje uhtsademesuörggiene, júhte tjieldiesne lijjen gájks lúvletjh. Lúvletjh ednen jijtjase vuögijde akttane barggat jah stáhtijne jah gïrkuojne guvlatallat bijjiele tjuöhtie jábieh uvddale guh vuostas búndh búhten. Tjeälddie lij jijtjase suaknnuo, gïrkkuo-, diggie- jah tjudtjatusdáhvuone. 1750 jäbij ájgien älgij vijđies iednamválddiemedåjbma sämij dáhvuojne. Árviesjávrien tjeälddie sjaddij miŋŋijmus lúvletjij tjieldijste sámieniednamisne, gússnie dahta dahktuvvij. Sjeltien, Ubmejen, Byöhđamen jah Julevun sámieniednamijne stuövies urratahkh lijjen vádnásh. Miŋŋiele 1750 lúvletjij skáhttielándh Uhmebïvdna (Ubmejen Tjeälddie) Ubmejen sámieniednamisne byöjsstan uđđastubij tseggemij dehte, mastie sjaddij júhte Uhmebïvdna (dálátje Lïkssjuon kommuvdna) lij tjeälddiene nåhkame 1800 tjuöhtiejäbij bijrra. Lúvletjij tjieldijne jis jielátissah nïnnuostuvvijeäh. Dajdde guvlij Árviesjávrien tjeälddie juhka villie údnek leä báhtsáme (Mávasjávrrie, Luvlatje jah Jilliebe Giehkure). Dassa lij dáhta vuođđuone ahtie lúvletjh ärbij tsaggie, nammadum guöllie- jah návddiebïvduojne jah båtsuojsuojtuojne, vyössan. 1650 jäbij äjgijne lijgan bïvdduo jah guelleme åjvviejielátissane jah 1700 tjuöhtiejäbij ájgien sjaddij båtsuojbargguo mierriedijjiene jah bájdnagúdij sagga sijjij viessuomvyjjarijde. Dan virduodemesne lúvletjh välljejijjen jijtjase tjåvddiemijde. Skáhttielándijde juogadeäh jah dan miŋŋiele ieluoh stuorránin Árviesjávrien tjeälddie lij tjieldij gaskasne aktta, gússnie vuojnuos ålbmagestuorruome sjaddij ájggiegaskasne 1750-1800. Lúvletjij syöbradahka jietjátuvvij dan mehte guh lägedijjen júhte bájdniemefábmuo bätsij sijjije. Lúvletjh lijjen åssiene gïrkuoste jah gïrkuon vyjjarijste, sämij dålmanjh (tålmannijh) gähtten buoragikta jijtjase jielátissijde. Vuösietijjen júhte mähtten dåjmadit dárbuoj mehte stáhtijne jah gïrkuojne jah ájnasikta sïhttáh úvdiedit åsiestiemiev. Ekonomijjasne eäh lama juogdish nåv stuorráh jah tjeälddie lij sisŋielde geävrra. 1750 lúhkien jäbij rájieste gidd’ 1800 kruvnan dahkuoh sämij vuösstie Sverjesne byjkkasissa sjedden, júhtie lúvletjh byörrijeäh sjaddat iednamberggijiene. Ussjadellen máje júhte lúvletjij viessuomtjeärdda lij úhtsiebe árvuoste jah udtja dan dehte byöjsstat. Valla lúvletjh dassa idtjen mivvah eäh geän tjuovuoh mab guhtjadijjen. 1800 tjuöhtejábien rájjáje lúvletjh úvdiedellen Árviesjávrien tjieldien jielátissijde ja sämij ålbmage stuoruoj. Miŋŋiele gújt, lahkabisne 1830-lúhkien ájggáje, lúvletjh múvtieme mierráje sjedden hiejmánij iejgádiene. Viehka vuösstiemanname lij dahta guh vuostas åsiesne 1800 tjuöhtiejäbijne lánddajessemah diggij vuöldie sirdietuvvijeäh lienatjudtjatussan vuolláje. Ihkabe ájggie 1800 tjuöhtiejäbij rájjáje lij buerijmus ájggie lúvletjijde. Tjuöhtiejáhpie juhka dalluoj búdij buektij sämijde stuorra jah lussas hásstiemijde, juhkh idtjen unnánh stáhtan dåjmaj dehte.

Avhandlingen ingår även i institutionen för idé- och samhällsstudiers skriftserie Historiska studier: Skrifter från Umeå universitet 10. 

A introdução de espécies cresceu nos últimos séculos e muitas delas têm se tornado problema devido à alta capacidade de invasão, modificando ecossistemas naturais e ameaçando espécies nativas. O javali (Sus scrofa) tem demonstrado grande capacidade de invasão e de produção de danos à biodiversidade e agropecuária. No Brasil, a combinação de ambientes com grãos cultivados e remanescentes de vegetação silvestre parece oferecer aos javalis condições alimentares adequadas. Neste trabalho analisamos o conteúdo estomacal de javalis abatidos por controladores para caracterizar a composição de alimentos explorados em três ecorregiões brasileiras – os Campos Sulinos, as Florestas de Araucária e o Pantanal - e avaliar os possíveis riscos que a espécie pode representar para a produção agropecuária e a conservação da biodiversidade. Examinamos a existência de padrões de dieta em cada ecorregião e sua relação com atributos dos indivíduos, do ambiente e da caça através de métodos de ordenação. Visualizamos a distribuição de macronutrientes através da ferramenta gráfica Triângulo-Retângulo de Mistura. Partes aéreas de plantas frescas e raízes formaram a base da dieta nas três ecorregiões. Quando disponíveis, grãos cultivados nos Campos Sulinos e Florestas de Araucária e frutos e sementes silvestres no Pantanal parecem ser preferidos à forragem, o que pode ser explicado por possuírem alto valor energético. Raízes e invertebrados são importantes alimentos no Pantanal, principalmente no período de vazante. Além do registro do consumo de fauna nativa houve o consumo de ovinos. Nas três ecorregiões estudadas há grande variação na proporção em que itens são encontrados em cada estômago. Estes achados sugerem que as necessidades nutricionais são menos importantes ou de difícil ajuste nas condições limitantes dos ambientes silvestres. Nos Campos Sulinos o consumo de proteínas alcançou níveis ideais para crescimento e lactação quando comparado ao porco doméstico o que sugere melhores condições de expansão e abundância nessa região. De forma geral, a dieta de javalis nas ecorregiões estudadas sugere que os principais danos à biodiversidade estejam mais relacionados com a competição difusa por exploração de recursos e alterações nos hábitats e processos ecossistêmicos pela busca por recursos do que pela predação de espécies de interesse especial de conservação.
Introduction of species has grown in recent centuries and many have become a problem due to high invasiveness, modifying natural ecosystems and threatening native species. Wild boar (Sus scrofa) has demonstrated great capacity for invasion and production of damages to biodiversity and agriculture. In Brazil, the combination of environments with cultivated grains and remnants of wild vegetation seems to offer the wild boars adequate food conditions. In this study, we analyzed the stomach contents of wild boars slaughtered by controllers to characterize the composition of foods exploited in three Brazilian ecoregions characterized by mosaics of fields and forests – the South Brazilian Campos, the Araucaria Forests and Pantanal - and to evaluate the possible risks that the species can represent for agricultural production and conservation of biodiversity. We examined the existence of dietary patterns in each ecoregion and its relation with individuals' attributes, the environment and hunting through ordering methods. We visualize the macronutrient distribution through the right-angle misture triangle (RMT) tool. Aerial parts of fresh plants and roots formed the basis of diet in the three ecoregions. When available, grains grown in the South Brazilian Campos and Araucaria Forests and wild fruits and seeds in the Pantanal seem to be preferred to the forage, which can be explained by their high energy value. Roots and invertebrates are important food in the Pantanal, especially in the period of ebb. In addition to the consumption of native fauna, there was consumption of sheep. In the three ecoregions studied there is great variation in the proportion in which items are found in each stomach. These findings suggest that nutritional needs are less important or difficult to adjust under conditions that limit wild environments. In the Shouth Brazilian Campos the protein consumption reached optimal levels for growth and lactation when compared to the domestic pig, which suggests better conditions of expansion and abundance in this region. In general, the wild boar diet in the ecoregions studied suggests that the main damages to biodiversity are more related to the diffuse competition for resource exploitation and changes in habitats and ecosystem processes due to the search for resources than for the predation of species of special interest to conservation.

Orientador: Mauro Galetti Rodrigues
Resumo: Invasões biológicas são uma das principais ameaças à biodiversidade, razão pela qual é campo de interesse de investigações científicas dos ecólogos. Os Neotrópicos abrigam uma das maiores riquezas de espécies do planeta e ao longo dos últimos anos vem sofrendo um aumento expressivo no número de introduções de espécies exóticas. Uma delas é o javali Sus scrofa e suas raças cruzadas com porcos domésticos, que em sua forma silvestre e de vida livre chamamos suídeos asselvajados. Ao longo dessa tese procuro investigar algumas das consequências ecológicas da invasão dessa espécie, assim como apresentar um panorama do controle populacional empregado hoje no Brasil, buscando sempre que possível fazer uma discussão dos resultados aplicada ao manejo da espécie. No Capítulo 1 mostro como a introdução acentuada dessa espécie ocorrida nos últimos 20 anos no Brasil fez com que ela se distribuísse amplamente por todo território nacional, principalmente nas regiões Sul, Sudeste e Centro-Oeste. No Capítulo 2 eu procurei fazer uma avaliação da efetividade do papel ecológico de frugivoria e dispersão de sementes prestado por esses animais. O Capítulo 3 mostra como as paisagens agrícolas estão subsidiando a invasão dos suídeos asselvajados potencializando a expansão da espécie e no Capítulo 4 busco revelar o papel do invasor no deslocamento do nicho trófico dos pecarídeos nativos.Já o Capítulo 5 apresenta um breve relato da interação entre os suídeos asselvajados e morcegos vampiros e, ao final... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Biological invasions are one of the main threats to biodiversity, which is why it is a field of interest for scientific investigations by ecologists. The Neotropics are home to one of the planet's greatest species richness, and over the last few years it has been experiencing a significant increase in the number of exotic species introduction. One of them is the wild boar Sus scrofa and their crossed-breeds with domestic pigs, that in its free-living wild-form we call wild pigs. My effort throughout this thesis is to investigate some of the ecological consequences of the invasion of this species, as well as present an outlook of the population control employed in Brazil, always seeking to make a discussion of the results applied to the management of the species. In Chapter 1 I show how the severe introduction of this species that occurred in the last 20 years in Brazil has made it widely distributed throughout the country, especially in the South, Southeast and Midwest regions. In Chapter 2 I evaluated the effectiveness of the ecological role of frugivory and seed dispersal provided by these animals. Chapter 3 shows how agricultural landscapes are subsidizing the invasion of wild pigs enhancing the species' expansion. In Chapter 4 I seek to reveal the role of the invader in displacing the trophic niche of native peccaries and Chapter 5 presents a brief account of the interaction between wild pigs and vampire bats. In the end, Chapter 6 outlines a profile of the methods and mo... (Complete abstract click electronic access below)
Doutor

Skogsbränderna har en stor betydelse för den biologiska mångfalden. Det brandpåverkade landskapet och dess dynamik skapar viktiga substrat och livsmiljöer för många pyrofila arter. På grund av att skogsbränderna har minskat i antal sedan 1800-talet, har kontrollerade naturvårdsbränningar utförts som ett komplement för dessa sedan 1980-talet. De kontrollerade naturvårdsbränningarna skapar de miljöer och substrat som många arter är beroende av. Eftersom tidigare mänsklig verksamhet satt prägel på skogarna återfinns idag ett stort antal fornlämningar och övriga kulturhistoriska lämningar i skogsmarkerna. Det är en utmaning att utföra naturvårdsbränningarna så att dessa lämningar inte skadas. Det råder också en brist på tydliga riktlinjer om hur Länsstyrelserna ska förhålla sig till naturvårdsbränningar i områden med lämningar. Denna studies syfte var att undersöka vilken inställning Länsstyrelserna har till naturvårdsbränningar i områden med fornlämningar eller övriga kulturhistoriska lämningar. Nyckelord: Naturvårdsbränningar, fornlämningar, övriga kulturhistoriska lämningar, Länsstyrelsen Keyword: Prescribed burnings, ancient remains, other cultural-historical remains, County Administrative Boards

碩士
國立臺灣大學
森林學研究所
88
The study examined the structural attributes of coarse woody debris (CWD) in broad-leaved forests at Fu-Shan area. CWD was divided into 3 categories (snags、standing dead and uprooting) and 5 decomposition classes. The total quantity of CWD at Fu-Shan forest was 290 trees/ha (40.66 m3/ha). Most of CWD was in snags category(54%)(157 trees/ha；12.37 m3/ha)，while standing dead represented 32%(93 trees/ha；13.73 m3/ha) and uprooting, 14%(40 trees/ha；14.56 m3/ha). The decomposition state of CWD was mostly in 3rd classes. The most dominant tree species of CWD at Fu-Shan forest were Castanopsis carlesii and Pyrenaria shinkoensis.