Black Sturgeon Boreal Mixedwood Research Project

1999 ◽  
Vol 75 (3) ◽  
pp. 427-430 ◽  
Author(s):  
D. A. Cameron ◽  
I. K. Morrison ◽  
K. A. Baldwin ◽  
D. P. Kreutzweiser
Keyword(s):  
Fire Ecology ◽  
Site Preparation ◽  
Research Project ◽  
Ecosystem Responses ◽  
North Central ◽  
Research Perspective ◽  
High Productivity ◽  
Second Growth ◽  
Wildlife Populations ◽  
Boreal Mixedwoods

Over 50% of the productive forest land in boreal Ontario is composed of boreal mixedwood stands. These stands represent some of the most complex ecological problems for forest researchers because of inherent fertility and high productivity both in terms of timber yields and ability to sustain high wildlife populations. The response of boreal mixedwoods to disturbances such as fire, insects and disease and harvesting is also unclear. An integrated, multi-disciplinary, multi-agency approach to understanding boreal mixedwood ecosystems was undertaken in the early 1990s with the establishment of the Black Sturgeon Boreal Mixedwood Research Project Four broad research component studies – site preparation alternatives, harvesting impacts, fire ecology and aquatic ecosystem responses – were begun in second growth boreal mixedwoods in north central Ontario. This account provides a broad overview of the specific research investigations on the Black Sturgeon Boreal Mixedwood Research Project. It outlines the funding, partnerships and management of this project and provides a historical research perspective of the Black Sturgeon area. Key words: boreal, mixedwood, harvesting impacts, fire ecology, site preparation, aquatic ecosystems

scholarly journals Interindi: una nueva perspectiva de investigación acerca del indigenismo / Interindi: A New Research Perspective on Indigenismo

2018 ◽  
pp. 84
Author(s):  
Laura Giraudo ◽  
Juan Martín Sánchez
Keyword(s):  
State Of The Art ◽  
The State ◽  
Primary Sources ◽  
Research Project ◽  
Research Perspective ◽  
Scientific Discussion ◽  
Professional Field ◽  
New Research ◽  
Empirical Contribution

This article presents the main objectives and outcomes of the Interindi research project: “El indigenismo interamericano: instituciones, redes y proyectos para un continente, 1940-1960”. Its most ambitious research objective is to provide a methodological, theoretical and empirical contribution to scientific discussion on indigenismo. After discussing the state of the art in this field, advances are offered for a new broader perspective based on two fundamental aspects: 1) the importance of consulting primary sources to explain indigenismo, and 2) the need to remove the discussion of the indigenous question and indigenismo from the auto-referential context in which it has developed.Key WordsIndigenismo, professional field, inter-American networks.ResumenEste artículo presenta los objetivos y resultados principales del proyecto de investigación Interindi: “El indigenismo interamericano: instituciones, redes y proyectos para un continente, 1940-1960”. El objetivo más ambicioso de la investigación es conseguir una contribución metodológica, teórica y empírica a la discusión científica acerca del indigenismo. Tras discutir el estado de la cuestión, se introducen los avances de una nueva perspectiva general que radica en dos aspectos fundamentales: 1) la importancia de acudir al estudio de las fuentes para explicar el indigenismo y 2) la necesidad de sacar la discusión sobre la cuestión indígena y el indigenismo del contexto autorreferencial en que se ha desarrollado.Palabras claveIndigenismo, campo profesional, redes interamericanas.

scholarly journals Canals, Cities, Museums, Libraries & Photography: a Reconnaissance Study of Regent’s Canal, London

2018 ◽  
pp. 173-180
Author(s):  
Graham Diprose ◽  
Christina Hemsley ◽  
James Hemsley
Keyword(s):  
Cultural Heritage ◽  
Exploratory Research ◽  
Research Project ◽  
Image Capture ◽  
North Central ◽  
Storage And Retrieval ◽  
Industrial History

City waterways are a valuable part of our cultural heritage. Over the years the usage has changed from business to pleasure. Regent’s Canal, cutting across north central London since 1820, has a rich social and industrial history. Much of this history has been and is being captured via photographs. Many of these are being lost due to limited museum resources and disparate collections. This paper reports on phase one of a fifteen-month exploratory research project. The research aims to explore ways of aiding image capture, selection, storage and retrieval. We hope to link with researchers elsewhere, especially in Italy.

scholarly journals Alternatives to broadcast burning in the northern interior of British Columbia: Short-term tree results

2000 ◽  
Vol 76 (2) ◽  
pp. 349-353 ◽  
Author(s):  
J. M. Kranabetter ◽  
D. Yole
Keyword(s):  
British Columbia ◽  
Pinus Contorta ◽  
High Elevation ◽  
Site Preparation ◽  
Foliar Nutrients ◽  
Short Term ◽  
Positive Role ◽  
North Central ◽  
Mechanical Site Preparation ◽  
Foliar Concentrations

We compared the growth and foliar nutrients of lodgepole pine and hybrid white spruce following mechanical site preparation treatments and broadcast burning in a high-elevation plantation in north-central British Columbia. After five years, the largest trees were found on the broadcast burn (44% increase over raw planting), followed by disc-trenching (26% increase), and then windrow piling (9% increase). Height increment was similarly significantly different between treatments after seven years. Equal increases in nitrogen, phosphorus, and sulphur foliar concentrations were found across all site preparation treatments compared to controls. Foliar nutrients alone, however, did not further explain the differences in tree productivity between site preparation treatments. The results demonstrated how some sites can benefit from site preparation, in the short-term at least, and also emphasized the positive role fire can have on forest productivity. Key words: mechanical site preparation, broadcast burning, Picea gluaca, Pinus contorta

Estimating relative error in growth ring analyses of second-growth coast redwood (Sequoia sempervirens)

2006 ◽  
Vol 36 (9) ◽  
pp. 2216-2222 ◽  
Author(s):  
Kristen M Waring ◽  
Kevin L O'Hara
Keyword(s):  
Cross Sections ◽  
Growth Ring ◽  
Ring Width ◽  
Sequoia Sempervirens ◽  
North Central ◽  
Coast Redwood ◽  
Central California ◽  
Breast Height ◽  
Second Growth ◽  
Annual Growth Rings

Coast redwood (Sequoia sempervirens (D. Don) Endl.) grows in the coastal zone of north-central California and southern Oregon in pure and mixed-species forests. Redwood has long been recognized to exhibit unusual patterns within the annual growth rings typical of temperate forest trees, including partial and missing rings and ring-width anomalies. However, these patterns have not been quantified beyond a few suppressed trees. This study quantified the variation in ring counts occurring in 22 second-growth redwood trees from different canopy classes. Ring counts from cross sections taken at sample points along each tree bole revealed missing or incomplete rings in all sample trees and 70% of the cross sections. Ring counts along multiple radii were used to calculate probability of obtaining a maximum ring count along one radius. This probability was lowest at the tree base (0.25) and breast height (0.30) and highest near the top of the tree (0.90). Because of the high amount of variation present in ring counts at breast height, care should be taken when drawing conclusions regarding stand ages from increment cores. Increment cores should be taken from the longest axis of the tree and coring at tree base can be abandoned as cores are not likely to have higher ring counts than breast height cores.

scholarly journals The effects of hurricanes on birds, with special reference to Caribbean islands

1993 ◽  
Vol 3 (4) ◽  
pp. 319-349 ◽  
Author(s):  
James W. Wiley ◽  
Joseph M. Wunderle
Keyword(s):  
Indirect Effects ◽  
Forest Canopy ◽  
Local Population ◽  
Storm Surges ◽  
Reproductive Rate ◽  
Plant Succession ◽  
Bird Populations ◽  
Second Growth ◽  
Wildlife Populations ◽  
Old Trees

SummaryCyclonic storms, variously called typhoons, cyclones, or hurricanes (henceforth, hurricanes), are common in many parts of the world, where their frequent occurrence can have both direct and indirect effects on bird populations. Direct effects of hurricanes include mortality from exposure to hurricane winds, rains, and storm surges, and geographic displacement of individuals by storm winds. Indirect effects become apparent in the storm's aftermath and include loss of food supplies or foraging substrates; loss of nests and nest or roost sites; increased vulnerability to predation; microclimate changes; and increased conflict with humans. The short-term response of bird populations to hurricane damage, before changes in plant succession, includes shifts in diet, foraging sites or habitats, and reproductive changes. Bird populations may show long-term responses to changes in plant succession as second-growth vegetation increases in storm-damaged old-growth forests.The greatest stress of a hurricane to most upland terrestrial bird populations occurs after its passage rather than during its impact. The most important effect of a hurricane s i the destruction of vegetation, which secondarily affects wildlife in the storm's aftermath. The most vulnerable terrestrial wildlife populations have a diet of nectar, fruit, or seeds; nest, roost, or forage on large old trees; require a closed forest canopy; have special microclimate requirements and/or live in a habitat in which vegetation has a slow recovery rate. Small populations with these traits are at greatest risk to hurricane-induced extinction, particularly if they exist in small isolated habitat fragments.Recovery of avian populations from hurricane effects is partially dependent on the extent and degree of vegetation damage as well as its rate of recovery. Also, the reproductive rate of the remnant local population and recruitment from undisturbed habitat patches influence the rate at which wildlife populations recover from damage.

Discursive Study of Religion: Approaches, Definitions, Implications

2013 ◽  
Vol 25 (1) ◽  
pp. 5-25 ◽  
Author(s):  
Kocku von Stuckrad
Keyword(s):  
Sociology Of Knowledge ◽  
Historical Analysis ◽  
Research Project ◽  
Historical Epistemology ◽  
Research Perspective ◽  
Academic Study

Abstract The article explores recent approaches to historical analysis of discourse that have been developed in disciplines such as the sociology of knowledge and historical epistemology. These approaches have only sporadically been taken seriously in the academic study of religion, although they have a great potential to establish a study of religion that is both academically rigorous and aware of its societal and historical contexts and limitations. The article defines the necessary concepts for a discursive study of religion as an hermeneutical discipline that scrutinizes and historicizes the societal organization of knowledge about religion. This discourse on religion—defined here as religion—generates, legitimizes, and maintains meaning structures and societal realities. The discourse-historical analysis of religion is not itself a method but a research perspective. Nevertheless, this perspective implies several steps in designing a research project that the article describes with concrete examples.

scholarly journals O POVO DAS ÁGUAS: carta arqueológica das estearias da porção centro-norte da baixada maranhense

2013 ◽  
Vol 20 (3) ◽  
pp. 57 ◽  
Author(s):  
Alexandre Guida Navarro
Keyword(s):  
Settlement Pattern ◽  
Central Portion ◽  
Archaeological Sites ◽  
Research Project ◽  
North Central ◽  
The North ◽  
The People ◽  
The Subject ◽  
Initial Results

Este artigo apresenta os resultados iniciais acerca do projeto de pesquisa “O Povo das Águas: carta arqueológica das estearias da porção centro-norte da Baixada Maranhense”. Tais resultados referem-se ao levantamento bibliográfico acerca do tema que nos ocupa, levantamento de alguns sítios arqueológicospara escavação e alguns questionamentos acerca do processo de ocupação pré-histórica na área de estudo.Palavras-chave: Arqueologia. Pré-história maranhense. Estearias. Padrão de assentamento. THE PEOPLE OF THE WATERS:dwellings archaeological chart of the north-central portion of Maranhão’s baixadaAbstract: This article presents the initial results of a research project on "The People of the Waters: ArchaeologicalProject about Dwellings on the North Central Portion at Baixada Maranhense." These results relate to the literature on the subject that we are studying, lifting some archaeological sites for excavation and questions about the process of prehistoric occupation in the study area.Keyword: Archaeology. Prehistory of Maranhão. Dwellings. Settlement Pattern. LOS HABITANTES DE LAS AGUAS:carta arqueológica de los palafitos de la parte norte-central de baixada maranhenseResumen: Este artículo presenta los resultados iniciales acerca del proyecto de investigación “El Pueblo de las Águas: carta arqueológica de los palafitos de la porción centro norte de la Baixada Maranhense”. Estos resultados dicen respecto al levantamento bibliográfico para excavaciones y cuestionamientos acerca del proceso de ocupación en el área de estudio.Palabras clave: Arqueología. Pre-historia de Maranhão. Palafitos. Patrón de asentamiento.

scholarly journals Researching vernacular Judaism: reflections on theory and method

2019 ◽  
Vol 30 (1) ◽  
pp. 91-108 ◽  
Author(s):  
Ruth Illman
Keyword(s):  
Jewish Studies ◽  
Research Project ◽  
Research Perspective ◽  
Vernacular Religion ◽  
Emerging Patterns ◽  
Methodological Considerations ◽  
Religion And Change

This article presents the ethnographically driven multi-method research perspective of vernacular religion and analyses its potential to contribute to the theoretical advancement of Jewish studies. The ongoing discussion on religion and change within the study of religions in gen­eral and Jewish studies in particular is outlined and structured around three ‘turns’ identified in the re­search on vernacular religiosity. To exemplify these theoretical and methodological considerations, a recently initiated research project focusing on vernacular Judaism in Finland is presented. This project seeks to examine central ideas of boundaries as they are negotiated and interpreted among Finnish Jewry, to compare the emerging patterns with Nordic counterparts and thus contribute to a more nuanced perception of Jewish identities in these contexts. The article concludes with a discussion on the advances of such an approach, pointing to the relative novelty of research into vernacular religion within Jewish studies and the exceptionality of the Finnish Jewish context.

scholarly journals Establishment of second-growth forests in human landscapes: ecological mechanisms and genetic consequences

2020 ◽  
Vol 77 (3) ◽  
Author(s):  
Arndt Hampe ◽  
Raquel Alfaro-Sánchez ◽  
Irene Martín-Forés
Keyword(s):  
Broad Spectrum ◽  
Ecosystem Functions ◽  
Special Issue ◽  
Forest Stands ◽  
Research Project ◽  
Second Growth ◽  
Dynamic Landscapes ◽  
Ecological Mechanisms ◽  
New Forest ◽  
Establishment Process

Abstract •Key messageThis special issue gathers articles arising from the ERA-NET BiodivERsA3 research project “Unraveling the Potential of Spontaneous Forest Establishment for Improving Ecosystem Functions and Services in Dynamic Landscapes (SPONFOREST)”. Using a broad spectrum of research approaches, they provide detailed insights into how new forest stands establish and which consequences the establishment process has for their character and functioning.

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