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Proměna Šumavy za industrializace: zapomenuté stopy dřevařů / The Transformation of Šumava Mountains at the time of industrialization: Forgotten Traces of WoodworkersBlažková, Tereza January 2018 (has links)
The aim of the thesis is to show the changes and the development of the landscape and the settlement of the region of central Šumava mountains due to industrialization in the 19th century. The thesis is based theoretically and methodologically in the field of anthropology of landscape and industrial archeology. It combines archive written and cartographic sources with non-destructive field research of anthropogenic relics. The industrialization of the area of interest meant the woodworking expansion that was caused by the lack of firewood in Prague and its surroundings and was realized as a business plan by the noble Schwarzenberg family. Schwarzenberg forest exploatation and timber floating system for firewood transport have brought significant landscape changes to hitherto almost untouched mountaneous forested areas. The field research has identified elements of the floating timber system, such as water reservoirs, watercourse troughs or the Vchynicko-Tetovský floating canal, as well as traces of both, permanent and seasonal settlement of woodcutters. The work divides the area into four zones, depending on how they were used, settled and transformed during the 19th century. The greatest attention is devoted to zone no. I, the remote forest area, which has become a major resource area for the Schwarzenberg...
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Proměna Šumavy za industrializace: zapomenuté stopy dřevařů / The Transformation of Šumava Mountains at the time of industrialization: Forgotten Traces of WoodworkersBlažková, Tereza January 2018 (has links)
The aim of the thesis is to show the changes and the development of the landscape and the settlement of the region of central Šumava mountains due to industrialization in the 19th century. The thesis is based theoretically and methodologically in the field of anthropology of landscape and industrial archeology. It combines archive written and cartographic sources with non-destructive field research of anthropogenic relics. The industrialization of the area of interest meant the woodworking expansion that was caused by the lack of firewood in Prague and its surroundings and was realized as a business plan by the noble Schwarzenberg family. Schwarzenberg forest exploatation and timber floating system for firewood transport have brought significant landscape changes to hitherto almost untouched mountaneous forested areas. The field research has identified elements of the floating timber system, such as water reservoirs, watercourse troughs or the Vchynicko-Tetovský floating canal, as well as traces of both, permanent and seasonal settlement of woodcutters. The work divides the area into four zones, depending on how they were used, settled and transformed during the 19th century. The greatest attention is devoted to zone no. I, the remote forest area, which has become a major resource area for the Schwarzenberg...
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COMPACTAÇÃO DO SOLO CAUSADA PELOS TRATORES FLORESTAIS HARVESTER E FORWARDER NA COLHEITA DE Pinus taeda L. / SOIL COMPACTION CAUSED BY THE FORESTRY TRACTORS HARVESTER AND FORWARDER IN Pinus taeda L. HARVESTINGSzymczak, Denise Andréia 28 February 2013 (has links)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Soil compaction has been becoming one of the main impacts caused by the activities of mechanized harvesting. The weight and movement of machines at the time of cutting and loading of timber combined with the not appropriate moisture condition of the soil are the main causes of soil structural degradation, observed mainly by changes in soil physical properties. Thus, this study aimed to identify soil compaction caused due to forest harvesting stages of Pinus taeda L. performed on three different soil moistures. A study in the city of Quedas do Iguaçu in southwestern Paraná was carried out in pine stands of Araupel S/A company. The research was assessed as completely randomized in and sub-subdivide plots with five replications. The eighteen treatments consisted of the interaction of three factors, namely: moisture (rainy day harvesting and 3 and 7 days after rain); harvesting operations (machine traffic (MT); no machine traffic (NMT) and timer landing (TL)); and time of collection (before and after harvest), being major plot, subdivided plots, and sub-subdivided plots in time, respectively. Soil under a native forest adjacent to the experiment was evaluated to infer on the changes caused to the soil regarding its cultivation and management. Results indicated that the difference in soil moisture represented by the different days of harvest after a rain did not influence differently the soil compaction. On the other hand, harvesting operations (MT, NMT and TL) impacted soil to a depth of 10 cm causing compaction on the traffic lines of the machines, while the eventual falling trees at the time of cutting and timber landing did not cause changes in density, macroporosity and resistance to penetration. The residual biomass from forest harvesting was essential to minimize soil compaction caused by machinery traffic that was close to the maximum. Comparison of physical parameters of soil under native forest and pine stand showed that planting and management of soils covered by natural forests alter the physical properties of the surface until 30 cm of depth. / A compactação vem se tornando um dos principais impactos causados ao solo pelas atividades de colheita florestal mecanizada. O peso e a movimentação das máquinas no momento do corte e extração da madeira, aliada à condição de umidade do solo imprópria para tal são as principais causas da degradação estrutural do solo, verificada principalmente por alterações em suas propriedades físicas. Nesse sentido, este trabalho objetivou identificar a compactação causada devido às etapas de colheita florestal de Pinus taeda L. realizada em três diferentes umidades do solo. O estudo foi realizado no município de Quedas do Iguaçu, em povoamento da empresa Araupel S/A. A pesquisa foi avaliada como delineamento inteiramente casualizado em parcelas sub-subdivididas, com dezoito tratamentos e cinco repetições. Os tratamentos foram compostos pela interação de três fatores, sendo eles: umidade (colheita em dia de chuva, três dias após a chuva e sete dias após a chuva), operações de colheita (com passagem de máquinas (CP), sem passagem de máquinas (SP) e estaleiro (E), e a ocasião de coleta (antes e depois da colheita), sendo respectivamente, parcela principal, parcelas subdivididas e parcelas sub-subdivididas no tempo. O solo sob uma floresta nativa adjacente ao experimento foi avaliado para inferir sobre as alterações provocados no solo pelo cultivo e manejo do mesmo. Os resultados obtidos indicam que a diferença de umidade no solo, representada pela colheita em diferentes números de dias após uma chuva, não influenciou de maneira diferenciada na compactação do solo. Por outro lado, as operações de colheita (CP, SP e E) impactaram o solo até a profundidade de 10 cm, causando a compactação nas linhas de tráfego das máquinas, enquanto que a eventual queda de árvores no momento do corte e o empilhamento de toras não provocaram alterações na densidade, macroporosidade e resistência a penetração. A biomassa residual da colheita florestal foi essencial para minimizar a compactação do solo causada pelo tráfego das máquinas que foi próxima da máxima. A comparação de parâmetros físicos do solo sob mata nativa e povoamento de pinus mostrou que o cultivo e manejo de solos que um dia foram cobertos por florestas naturais provoca alterações nas propriedades físicas do solo da superfície até 30 cm de profundidade.
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Efeito de pertubações antrópicas crônicas sobre a diversidade da flora lenhosa da caatingaRIBEIRO, Elâine Maria dos Santos 25 February 2015 (has links)
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Previous issue date: 2015-02-25 / FACEPE / Este estudo teve como objetivo investigar quais os efeitos de perturbações antrópicas crônicas
(e.g. coleta de madeira e de produtos florestais não madeireiros, pastoreio extensivo, caça e
danos causados à vegetação pela introdução de espécies exóticas que ocorrem em áreas
remanescentes de floresta) sobre a diversidade taxonômica e filogenética da flora lenhosa da
Caatinga. Inicialmente, investigamos como se dá a questão da perturbação crônica da flora e
seus efeitos sobre a biodiversidade através da revisão de 51 artigos que tratam do tema.
Verificamos que estes estudos, em sua maioria, foram realizados em países em
desenvolvimento, cujas populações humanas utilizam a floresta para subsistência e comércio.
Os efeitos da perturbação foram acessados principalmente ao nível de populações e
comunidades, sendo a coleta de produtos florestais não madeireiros a fonte de impacto mais
analisada. Os efeitos sobre a biodiversidade foram em geral negativos, mas efeitos neutros e
positivos também foram registrados. O segundo capítulo traz um estudo de caso que verifica a
influência das perturbações humanas crônicas sobre a diversidade e composição taxonômica
da flora lenhosa da Caatinga, realizado em várias propriedades privadas na cidade de
Parnamirim-PE, Brasil. Neste estudo foram amostradas comunidades lenhosas de adultos,
jovens e plântulas, e como preditores da perturbação crônica utilizaram-se a densidade de
pessoas e animais domésticos (caprinos e bovinos), além de indicadores de acessibilidade às
áreas, como a distância ao centro urbano mais próximo, à estrada mais próxima e à
propriedade rural mais próxima às parcelas amostradas. Esses preditores tiveram em geral
efeitos negativos sobre a diversidade taxonômica independente do estágio ontogenético, sendo
a densidade de pessoas e de animais os preditores mais importantes desses efeitos. Verificouse
ainda que a composição das espécies nas áreas perturbadas foi distinta, sendo pouco
representada pela abundância de espécies de madeira densa nas áreas mais perturbadas. O
terceiro e último capítulo verificou como as comunidades lenhosas de adultos, jovens e
plântulas da Caatinga, amostradas no capítulo anterior, são afetadas pela perturbação crônica
do ponto de vista de diversidade e estrutura filogenética. Neste capítulo, utilizaram-se os
mesmos preditores da perturbação citados anteriormente, porém agora combinados em um
índice de perturbação crônica. A diversidade de famílias esperadas para história evolutiva da
região e a distância média entre os indivíduos dessas comunidades, medida em anos, foi
reduzida em ambientes mais perturbados e para todos os estágios ontogenéticos. As
comunidades de jovens e de plântulas apresentaram maior grau de parentesco em áreas mais
perturbadas, sendo os táxons Euphorbiaceae e Cnidoscolus responsáveis por esse aumento de
parentesco. Os resultados desta tese demonstram que as perturbações antrópicas crônicas na
Caatinga não podem ser negligenciadas, pois conferem efeitos negativos importantes à
diversidade taxonômica e filogenética da flora lenhosa. Dessa forma, estratégias de manejo
que conciliem o uso dessas florestas e a manutenção da biodiversidade da Caatinga são
urgentes. / The aim of this study was to investigate the effect of chronic anthropogenic disturbances (e.g.
harvesting of timber and non-timber forest products, hunting, livestock, and damage to
vegetation caused by exotic species that occur in natural remnant forests) on the taxonomic
and phylogenetic diversity of wood flora from Brazilian Caatinga. Initially, 51 scientific
papers were revised in order to investigate how chronic anthropogenic disturbances affect the
flora of natural ecosystems. Most studies were conducted at developing countries, where
human populations use forest resources for subsistence and commerce. Chronic disturbance
effects were accessed mainly at population and community levels, and harvesting of nontimber
forest products was the disturbance source more frequently analyzed in those papers.
Effects of the chronic disturbances were in general negative, however positive and neutral
effects were also documented. The second chapter brings a case study that evaluates the
influence of chronic disturbances on the taxonomic diversity and composition of Caatinga
wood flora from private propreties at the municipality of Parnamirim-PE, Brazil. Adult,
sapling and seedling of wood plant communities were sampled, and the density of people and
livestock (goats and catle) near the plot were used as predictors of chronic disturbance, as
well as the distances to the nearest urban centre, road and rural property. In general, these
disturbance predictors showed negative effects on taxonomic diversity irrespective to
ontogenetic stage. Moreover, the density of people and livestock near the plot were the main
predictors of these negative effects. Species composition differed between plots with low and
high level of disturbance, especially in relation to hard wood species, which were rare in the
plots highly disturbed. The third and last chapter analyzed how the adult, sapling and seedling
communities, surveyed previously, were affected by chronic disturbances from the viewpoint
of the phylogenetic diversity and structure. In this chapter the chronic disturbance predictors
described above were combined into a chronic disturbance index. The diversity of families
expected to the local evolutionary history and the mean phylogenetic distance between the
individuals were reduced in plots with higher level of disturbance for all ontogenetic stages.
Sapling and seeedling communities had higher degree of relatedness in most disturbed sites,
being Euphorbiaceas and Cinidoscolus taxa responsible for this increasing in the relatedness
degree. Overall, this thesis demonstrates that chronic anthropogenic disturbance at Caatinga
could not continue to be neglected, as it imposes deleterious effects to the taxonomic and
phylogenetic diversity of wood plant assemblages. Management strategies conciliating forest
use and the maintenance of Caatinga biodiversity are urgent.
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EFFECTS OF FOREST MANAGEMENT ON TERRESTRIAL SALAMANDERS IN A MIDWEST HARDWOOD ECOSYSTEMAlison E Ochs (17118751) 13 October 2023 (has links)
<p dir="ltr">To examine how forest management affects terrestrial salamanders, this dissertation: (1) examines the effects of timber harvesting strategies on salamanders; (2) examines the effects of prescribed fire for oak regeneration on salamander populations; and (3) explores the influence of artificial cover object (ACO) wood type, size and shape, and placement on salamander monitoring results. These projects were conducted at the Hardwood Ecosystem Experiment (HEE) and Martell Experimental Forest in Indiana. Long-term salamander monitoring data from the HEE were used to examine the effects of clearcuts, shelterwoods, and patch cuts on salamander captures collected up to eleven years post-harvest and were analyzed with a before-after-control-impact (BACI) design. Clearcuts and patch cuts had negative effects on salamanders 4-6 years post-harvest, which coincided with a drought; however, preparatory and establishment shelterwood harvests showed no effects on salamander captures, suggesting that retaining canopy cover may protect salamanders from compound disturbances such as drought. Also at the HEE, capture-recapture techniques were used to examine salamander population estimates before and after fire. Only two of three fires affected salamander populations. In the short term, prescribed fire effects on salamanders may be weak and intermittent and microclimate may have a greater effect on populations, although the longer-term effects of fire remain unknown. At Martell Experimental Forest, salamander numbers were compared beneath ACOs of different wood types, sizes and shapes, and grid arrays of different spacings. Pine ACOs were preferred over ash, while several small ACOs yielded equal salamander numbers to one large ACO of equal total area. High ACO density may increase capture probability but reduce the area sampled by each ACO, while lower density ACO grids may cover a larger area with the same sampling effort and produce more comparable results, but with less precision; choice of ACO experimental design will therefore require careful consideration of management goals. This dissertation also suggests strategies to support salamander populations as guidelines for managers to consider in management planning.</p>
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