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Publisher: Oxford University Press   (Total: 396 journals)

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Showing 1 - 200 of 396 Journals sorted alphabetically
ACS Symposium Series     Full-text available via subscription   (SJR: 0.189, CiteScore: 0)
Acta Biochimica et Biophysica Sinica     Hybrid Journal   (Followers: 5, SJR: 0.79, CiteScore: 2)
Adaptation     Hybrid Journal   (Followers: 9, SJR: 0.143, CiteScore: 0)
Advances in Nutrition     Hybrid Journal   (Followers: 53, SJR: 2.196, CiteScore: 5)
Aesthetic Surgery J.     Hybrid Journal   (Followers: 6, SJR: 1.434, CiteScore: 1)
African Affairs     Hybrid Journal   (Followers: 65, SJR: 1.869, CiteScore: 2)
Age and Ageing     Hybrid Journal   (Followers: 91, SJR: 1.989, CiteScore: 4)
Alcohol and Alcoholism     Hybrid Journal   (Followers: 19, SJR: 1.376, CiteScore: 3)
American Entomologist     Full-text available via subscription   (Followers: 7)
American Historical Review     Hybrid Journal   (Followers: 156, SJR: 0.467, CiteScore: 1)
American J. of Agricultural Economics     Hybrid Journal   (Followers: 42, SJR: 2.113, CiteScore: 3)
American J. of Clinical Nutrition     Hybrid Journal   (Followers: 167, SJR: 3.438, CiteScore: 6)
American J. of Epidemiology     Hybrid Journal   (Followers: 189, SJR: 2.713, CiteScore: 3)
American J. of Hypertension     Hybrid Journal   (Followers: 25, SJR: 1.322, CiteScore: 3)
American J. of Jurisprudence     Hybrid Journal   (Followers: 19, SJR: 0.281, CiteScore: 1)
American J. of Legal History     Full-text available via subscription   (Followers: 8, SJR: 0.116, CiteScore: 0)
American Law and Economics Review     Hybrid Journal   (Followers: 27, SJR: 1.053, CiteScore: 1)
American Literary History     Hybrid Journal   (Followers: 16, SJR: 0.391, CiteScore: 0)
Analysis     Hybrid Journal   (Followers: 22, SJR: 1.038, CiteScore: 1)
Animal Frontiers     Hybrid Journal   (Followers: 1)
Annals of Behavioral Medicine     Hybrid Journal   (Followers: 16, SJR: 1.423, CiteScore: 3)
Annals of Botany     Hybrid Journal   (Followers: 36, SJR: 1.721, CiteScore: 4)
Annals of Oncology     Hybrid Journal   (Followers: 55, SJR: 5.599, CiteScore: 9)
Annals of the Entomological Society of America     Full-text available via subscription   (Followers: 10, SJR: 0.722, CiteScore: 1)
Annals of Work Exposures and Health     Hybrid Journal   (Followers: 32, SJR: 0.728, CiteScore: 2)
AoB Plants     Open Access   (Followers: 4, SJR: 1.28, CiteScore: 3)
Applied Economic Perspectives and Policy     Hybrid Journal   (Followers: 18, SJR: 0.858, CiteScore: 2)
Applied Linguistics     Hybrid Journal   (Followers: 57, SJR: 2.987, CiteScore: 3)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1, SJR: 1.241, CiteScore: 1)
Arbitration Intl.     Full-text available via subscription   (Followers: 20)
Arbitration Law Reports and Review     Hybrid Journal   (Followers: 14)
Archives of Clinical Neuropsychology     Hybrid Journal   (Followers: 30, SJR: 0.731, CiteScore: 2)
Aristotelian Society Supplementary Volume     Hybrid Journal   (Followers: 3)
Arthropod Management Tests     Hybrid Journal   (Followers: 2)
Astronomy & Geophysics     Hybrid Journal   (Followers: 44, SJR: 0.146, CiteScore: 0)
Behavioral Ecology     Hybrid Journal   (Followers: 52, SJR: 1.871, CiteScore: 3)
Bioinformatics     Hybrid Journal   (Followers: 317, SJR: 6.14, CiteScore: 8)
Biology Methods and Protocols     Hybrid Journal  
Biology of Reproduction     Full-text available via subscription   (Followers: 9, SJR: 1.446, CiteScore: 3)
Biometrika     Hybrid Journal   (Followers: 20, SJR: 3.485, CiteScore: 2)
BioScience     Hybrid Journal   (Followers: 29, SJR: 2.754, CiteScore: 4)
Bioscience Horizons : The National Undergraduate Research J.     Open Access   (Followers: 1, SJR: 0.146, CiteScore: 0)
Biostatistics     Hybrid Journal   (Followers: 17, SJR: 1.553, CiteScore: 2)
BJA : British J. of Anaesthesia     Hybrid Journal   (Followers: 175, SJR: 2.115, CiteScore: 3)
BJA Education     Hybrid Journal   (Followers: 65)
Brain     Hybrid Journal   (Followers: 68, SJR: 5.858, CiteScore: 7)
Briefings in Bioinformatics     Hybrid Journal   (Followers: 50, SJR: 2.505, CiteScore: 5)
Briefings in Functional Genomics     Hybrid Journal   (Followers: 3, SJR: 2.15, CiteScore: 3)
British J. for the Philosophy of Science     Hybrid Journal   (Followers: 36, SJR: 2.161, CiteScore: 2)
British J. of Aesthetics     Hybrid Journal   (Followers: 25, SJR: 0.508, CiteScore: 1)
British J. of Criminology     Hybrid Journal   (Followers: 591, SJR: 1.828, CiteScore: 3)
British J. of Social Work     Hybrid Journal   (Followers: 85, SJR: 1.019, CiteScore: 2)
British Medical Bulletin     Hybrid Journal   (Followers: 6, SJR: 1.355, CiteScore: 3)
British Yearbook of Intl. Law     Hybrid Journal   (Followers: 33)
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 4, SJR: 1.376, CiteScore: 1)
Cambridge J. of Economics     Hybrid Journal   (Followers: 65, SJR: 0.764, CiteScore: 2)
Cambridge J. of Regions, Economy and Society     Hybrid Journal   (Followers: 11, SJR: 2.438, CiteScore: 4)
Cambridge Quarterly     Hybrid Journal   (Followers: 9, SJR: 0.104, CiteScore: 0)
Capital Markets Law J.     Hybrid Journal   (Followers: 2, SJR: 0.222, CiteScore: 0)
Carcinogenesis     Hybrid Journal   (Followers: 2, SJR: 2.135, CiteScore: 5)
Cardiovascular Research     Hybrid Journal   (Followers: 14, SJR: 3.002, CiteScore: 5)
Cerebral Cortex     Hybrid Journal   (Followers: 46, SJR: 3.892, CiteScore: 6)
CESifo Economic Studies     Hybrid Journal   (Followers: 18, SJR: 0.483, CiteScore: 1)
Chemical Senses     Hybrid Journal   (Followers: 1, SJR: 1.42, CiteScore: 3)
Children and Schools     Hybrid Journal   (Followers: 6, SJR: 0.246, CiteScore: 0)
Chinese J. of Comparative Law     Hybrid Journal   (Followers: 4, SJR: 0.412, CiteScore: 0)
Chinese J. of Intl. Law     Hybrid Journal   (Followers: 22, SJR: 0.329, CiteScore: 0)
Chinese J. of Intl. Politics     Hybrid Journal   (Followers: 10, SJR: 1.392, CiteScore: 2)
Christian Bioethics: Non-Ecumenical Studies in Medical Morality     Hybrid Journal   (Followers: 10, SJR: 0.183, CiteScore: 0)
Classical Receptions J.     Hybrid Journal   (Followers: 27, SJR: 0.123, CiteScore: 0)
Clean Energy     Open Access   (Followers: 1)
Clinical Infectious Diseases     Hybrid Journal   (Followers: 68, SJR: 5.051, CiteScore: 5)
Communication Theory     Hybrid Journal   (Followers: 23, SJR: 2.424, CiteScore: 3)
Communication, Culture & Critique     Hybrid Journal   (Followers: 27, SJR: 0.222, CiteScore: 1)
Community Development J.     Hybrid Journal   (Followers: 28, SJR: 0.268, CiteScore: 1)
Computer J.     Hybrid Journal   (Followers: 9, SJR: 0.319, CiteScore: 1)
Conservation Physiology     Open Access   (Followers: 2, SJR: 1.818, CiteScore: 3)
Contemporary Women's Writing     Hybrid Journal   (Followers: 9, SJR: 0.121, CiteScore: 0)
Contributions to Political Economy     Hybrid Journal   (Followers: 5, SJR: 0.906, CiteScore: 1)
Critical Values     Full-text available via subscription  
Current Developments in Nutrition     Open Access   (Followers: 2)
Current Legal Problems     Hybrid Journal   (Followers: 29)
Current Zoology     Full-text available via subscription   (Followers: 3, SJR: 1.164, CiteScore: 2)
Database : The J. of Biological Databases and Curation     Open Access   (Followers: 8, SJR: 1.791, CiteScore: 3)
Digital Scholarship in the Humanities     Hybrid Journal   (Followers: 14, SJR: 0.259, CiteScore: 1)
Diplomatic History     Hybrid Journal   (Followers: 20, SJR: 0.45, CiteScore: 1)
DNA Research     Open Access   (Followers: 5, SJR: 2.866, CiteScore: 6)
Dynamics and Statistics of the Climate System     Open Access   (Followers: 4)
Early Music     Hybrid Journal   (Followers: 16, SJR: 0.139, CiteScore: 0)
Economic Policy     Hybrid Journal   (Followers: 41, SJR: 3.584, CiteScore: 3)
ELT J.     Hybrid Journal   (Followers: 24, SJR: 0.942, CiteScore: 1)
English Historical Review     Hybrid Journal   (Followers: 54, SJR: 0.612, CiteScore: 1)
English: J. of the English Association     Hybrid Journal   (Followers: 15, SJR: 0.1, CiteScore: 0)
Environmental Entomology     Full-text available via subscription   (Followers: 11, SJR: 0.818, CiteScore: 2)
Environmental Epigenetics     Open Access   (Followers: 3)
Environmental History     Hybrid Journal   (Followers: 27, SJR: 0.408, CiteScore: 1)
EP-Europace     Hybrid Journal   (Followers: 3, SJR: 2.748, CiteScore: 4)
Epidemiologic Reviews     Hybrid Journal   (Followers: 9, SJR: 4.505, CiteScore: 8)
ESHRE Monographs     Hybrid Journal  
Essays in Criticism     Hybrid Journal   (Followers: 19, SJR: 0.113, CiteScore: 0)
European Heart J.     Hybrid Journal   (Followers: 62, SJR: 9.315, CiteScore: 9)
European Heart J. - Cardiovascular Imaging     Hybrid Journal   (Followers: 9, SJR: 3.625, CiteScore: 3)
European Heart J. - Cardiovascular Pharmacotherapy     Full-text available via subscription   (Followers: 2)
European Heart J. - Quality of Care and Clinical Outcomes     Hybrid Journal  
European Heart J. : Case Reports     Open Access  
European Heart J. Supplements     Hybrid Journal   (Followers: 8, SJR: 0.223, CiteScore: 0)
European J. of Cardio-Thoracic Surgery     Hybrid Journal   (Followers: 9, SJR: 1.681, CiteScore: 2)
European J. of Intl. Law     Hybrid Journal   (Followers: 195, SJR: 0.694, CiteScore: 1)
European J. of Orthodontics     Hybrid Journal   (Followers: 4, SJR: 1.279, CiteScore: 2)
European J. of Public Health     Hybrid Journal   (Followers: 20, SJR: 1.36, CiteScore: 2)
European Review of Agricultural Economics     Hybrid Journal   (Followers: 10, SJR: 1.172, CiteScore: 2)
European Review of Economic History     Hybrid Journal   (Followers: 30, SJR: 0.702, CiteScore: 1)
European Sociological Review     Hybrid Journal   (Followers: 42, SJR: 2.728, CiteScore: 3)
Evolution, Medicine, and Public Health     Open Access   (Followers: 12)
Family Practice     Hybrid Journal   (Followers: 16, SJR: 1.018, CiteScore: 2)
Fems Microbiology Ecology     Hybrid Journal   (Followers: 15, SJR: 1.492, CiteScore: 4)
Fems Microbiology Letters     Hybrid Journal   (Followers: 28, SJR: 0.79, CiteScore: 2)
Fems Microbiology Reviews     Hybrid Journal   (Followers: 32, SJR: 7.063, CiteScore: 13)
Fems Yeast Research     Hybrid Journal   (Followers: 13, SJR: 1.308, CiteScore: 3)
Food Quality and Safety     Open Access   (Followers: 1)
Foreign Policy Analysis     Hybrid Journal   (Followers: 25, SJR: 1.425, CiteScore: 1)
Forest Science     Hybrid Journal   (Followers: 7, SJR: 0.89, CiteScore: 2)
Forestry: An Intl. J. of Forest Research     Hybrid Journal   (Followers: 16, SJR: 1.133, CiteScore: 3)
Forum for Modern Language Studies     Hybrid Journal   (Followers: 6, SJR: 0.104, CiteScore: 0)
French History     Hybrid Journal   (Followers: 33, SJR: 0.118, CiteScore: 0)
French Studies     Hybrid Journal   (Followers: 21, SJR: 0.148, CiteScore: 0)
French Studies Bulletin     Hybrid Journal   (Followers: 10, SJR: 0.152, CiteScore: 0)
Gastroenterology Report     Open Access   (Followers: 2)
Genome Biology and Evolution     Open Access   (Followers: 13, SJR: 2.578, CiteScore: 4)
Geophysical J. Intl.     Hybrid Journal   (Followers: 36, SJR: 1.506, CiteScore: 3)
German History     Hybrid Journal   (Followers: 23, SJR: 0.161, CiteScore: 0)
GigaScience     Open Access   (Followers: 4, SJR: 5.022, CiteScore: 7)
Global Summitry     Hybrid Journal   (Followers: 1)
Glycobiology     Hybrid Journal   (Followers: 13, SJR: 1.493, CiteScore: 3)
Health and Social Work     Hybrid Journal   (Followers: 56, SJR: 0.388, CiteScore: 1)
Health Education Research     Hybrid Journal   (Followers: 16, SJR: 0.854, CiteScore: 2)
Health Policy and Planning     Hybrid Journal   (Followers: 24, SJR: 1.512, CiteScore: 2)
Health Promotion Intl.     Hybrid Journal   (Followers: 22, SJR: 0.812, CiteScore: 2)
History Workshop J.     Hybrid Journal   (Followers: 31, SJR: 1.278, CiteScore: 1)
Holocaust and Genocide Studies     Hybrid Journal   (Followers: 28, SJR: 0.105, CiteScore: 0)
Human Communication Research     Hybrid Journal   (Followers: 15, SJR: 2.146, CiteScore: 3)
Human Molecular Genetics     Hybrid Journal   (Followers: 9, SJR: 3.555, CiteScore: 5)
Human Reproduction     Hybrid Journal   (Followers: 72, SJR: 2.643, CiteScore: 5)
Human Reproduction Open     Open Access  
Human Reproduction Update     Hybrid Journal   (Followers: 19, SJR: 5.317, CiteScore: 10)
Human Rights Law Review     Hybrid Journal   (Followers: 61, SJR: 0.756, CiteScore: 1)
ICES J. of Marine Science: J. du Conseil     Hybrid Journal   (Followers: 56, SJR: 1.591, CiteScore: 3)
ICSID Review     Hybrid Journal   (Followers: 10)
ILAR J.     Hybrid Journal   (Followers: 2, SJR: 1.732, CiteScore: 4)
IMA J. of Applied Mathematics     Hybrid Journal   (SJR: 0.679, CiteScore: 1)
IMA J. of Management Mathematics     Hybrid Journal   (SJR: 0.538, CiteScore: 1)
IMA J. of Mathematical Control and Information     Hybrid Journal   (Followers: 2, SJR: 0.496, CiteScore: 1)
IMA J. of Numerical Analysis - advance access     Hybrid Journal   (SJR: 1.987, CiteScore: 2)
Industrial and Corporate Change     Hybrid Journal   (Followers: 10, SJR: 1.792, CiteScore: 2)
Industrial Law J.     Hybrid Journal   (Followers: 37, SJR: 0.249, CiteScore: 1)
Inflammatory Bowel Diseases     Hybrid Journal   (Followers: 49, SJR: 2.511, CiteScore: 4)
Information and Inference     Free  
Integrative and Comparative Biology     Hybrid Journal   (Followers: 8, SJR: 1.319, CiteScore: 2)
Interacting with Computers     Hybrid Journal   (Followers: 11, SJR: 0.292, CiteScore: 1)
Interactive CardioVascular and Thoracic Surgery     Hybrid Journal   (Followers: 7, SJR: 0.762, CiteScore: 1)
Intl. Affairs     Hybrid Journal   (Followers: 63, SJR: 1.505, CiteScore: 3)
Intl. Data Privacy Law     Hybrid Journal   (Followers: 25)
Intl. Health     Hybrid Journal   (Followers: 6, SJR: 0.851, CiteScore: 2)
Intl. Immunology     Hybrid Journal   (Followers: 3, SJR: 2.167, CiteScore: 4)
Intl. J. for Quality in Health Care     Hybrid Journal   (Followers: 36, SJR: 1.348, CiteScore: 2)
Intl. J. of Constitutional Law     Hybrid Journal   (Followers: 64, SJR: 0.601, CiteScore: 1)
Intl. J. of Epidemiology     Hybrid Journal   (Followers: 239, SJR: 3.969, CiteScore: 5)
Intl. J. of Law and Information Technology     Hybrid Journal   (Followers: 5, SJR: 0.202, CiteScore: 1)
Intl. J. of Law, Policy and the Family     Hybrid Journal   (Followers: 25, SJR: 0.223, CiteScore: 1)
Intl. J. of Lexicography     Hybrid Journal   (Followers: 10, SJR: 0.285, CiteScore: 1)
Intl. J. of Low-Carbon Technologies     Open Access   (Followers: 1, SJR: 0.403, CiteScore: 1)
Intl. J. of Neuropsychopharmacology     Open Access   (Followers: 3, SJR: 1.808, CiteScore: 4)
Intl. J. of Public Opinion Research     Hybrid Journal   (Followers: 11, SJR: 1.545, CiteScore: 1)
Intl. J. of Refugee Law     Hybrid Journal   (Followers: 38, SJR: 0.389, CiteScore: 1)
Intl. J. of Transitional Justice     Hybrid Journal   (Followers: 11, SJR: 0.724, CiteScore: 2)
Intl. Mathematics Research Notices     Hybrid Journal   (Followers: 1, SJR: 2.168, CiteScore: 1)
Intl. Political Sociology     Hybrid Journal   (Followers: 40, SJR: 1.465, CiteScore: 3)
Intl. Relations of the Asia-Pacific     Hybrid Journal   (Followers: 23, SJR: 0.401, CiteScore: 1)
Intl. Studies Perspectives     Hybrid Journal   (Followers: 9, SJR: 0.983, CiteScore: 1)
Intl. Studies Quarterly     Hybrid Journal   (Followers: 48, SJR: 2.581, CiteScore: 2)
Intl. Studies Review     Hybrid Journal   (Followers: 25, SJR: 1.201, CiteScore: 1)
ISLE: Interdisciplinary Studies in Literature and Environment     Hybrid Journal   (Followers: 2, SJR: 0.15, CiteScore: 0)
ITNOW     Hybrid Journal   (Followers: 1, SJR: 0.103, CiteScore: 0)
J. of African Economies     Hybrid Journal   (Followers: 16, SJR: 0.533, CiteScore: 1)
J. of American History     Hybrid Journal   (Followers: 46, SJR: 0.297, CiteScore: 1)
J. of Analytical Toxicology     Hybrid Journal   (Followers: 14, SJR: 1.065, CiteScore: 2)
J. of Antimicrobial Chemotherapy     Hybrid Journal   (Followers: 15, SJR: 2.419, CiteScore: 4)
J. of Antitrust Enforcement     Hybrid Journal   (Followers: 1)
J. of Applied Poultry Research     Hybrid Journal   (Followers: 5, SJR: 0.585, CiteScore: 1)
J. of Biochemistry     Hybrid Journal   (Followers: 40, SJR: 1.226, CiteScore: 2)
J. of Burn Care & Research     Hybrid Journal   (Followers: 10, SJR: 0.768, CiteScore: 2)
J. of Chromatographic Science     Hybrid Journal   (Followers: 18, SJR: 0.36, CiteScore: 1)
J. of Church and State     Hybrid Journal   (Followers: 12, SJR: 0.139, CiteScore: 0)
J. of Communication     Hybrid Journal   (Followers: 55, SJR: 4.411, CiteScore: 5)
J. of Competition Law and Economics     Hybrid Journal   (Followers: 37, SJR: 0.33, CiteScore: 0)
J. of Complex Networks     Hybrid Journal   (Followers: 2, SJR: 1.05, CiteScore: 4)
J. of Computer-Mediated Communication     Open Access   (Followers: 29, SJR: 2.961, CiteScore: 6)
J. of Conflict and Security Law     Hybrid Journal   (Followers: 13, SJR: 0.402, CiteScore: 0)
J. of Consumer Research     Full-text available via subscription   (Followers: 47, SJR: 5.856, CiteScore: 5)
J. of Crohn's and Colitis     Hybrid Journal   (Followers: 10, SJR: 2.728, CiteScore: 5)

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Journal Cover
Forestry: An International Journal of Forest Research
Journal Prestige (SJR): 1.133
Citation Impact (citeScore): 3
Number of Followers: 16  
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0015-752X - ISSN (Online) 1464-3626
Published by Oxford University Press Homepage  [396 journals]
  • On the accuracy of international forest product statistics
    • Authors: Buongiorno J.
      Pages: 541 - 551
      Abstract: To judge the accuracy of international forest product statistics, we checked the consistency of the reported consumption of wood and fiber with the production of wood products. Using goal programming, we estimated for 180 countries the consumption of industrial roundwood and of paper-making fibers nearest to the reported consumption, given the reported production of sawnwood, wood-based panels, pulp and paper and paperboard, and prior estimates of the input–output coefficients. The results suggested that for the 3-year average 2013–2015, industrial roundwood consumption was under-reported in 57 countries by a total amount of 368 million m3 and over reported in 44 countries by a total of 16 million m3. The largest under-reporting was for China for which the reported consumption of industrial roundwood was 237 million m3, or 57 per cent less than the estimated. The largest over reporting was for India, by 11 million m3, or 24 per cent. For paper-making fibers, reported consumption was less than the estimated in 62 countries for a total of 11.3 million t, and it was more than the estimated in 61 countries, for a total of 3.2 million t. The largest under-reported amount was for India: 2.6 million t, or 20 per cent of the estimated, a difference that was entirely attributed to the under-reporting of recovered paper consumption. The largest over reported consumption of paper-making fibers was for Spain, nearly 1 million t, or 24 per cent, attributed to over reporting of recovered paper consumption. The main source of the discrepancies was in the production statistics rather than trade. Only in some instances was the presumption of illegal logging consistent with the discrepancy, or lack thereof, between reported and estimated consumption of industrial roundwood.
      PubDate: Fri, 17 Aug 2018 00:00:00 GMT
      DOI: 10.1093/forestry/cpy025
      Issue No: Vol. 91, No. 5 (2018)
  • Effect of climate and ENSO events on Prosopis pallida forests along a
           climatic gradient
    • Authors: Salazar P; Navarro-Cerrillo R, Ancajima E, et al.
      Pages: 552 - 562
      Abstract: Extreme rainfall events, such as the El Niño-Southern Oscillation (ENSO), are responsible to a large extent for the processes of tree establishment and tree growth in the North Peruvian dryland forest. Prosopis pallida (algarrobo) is the dominant species of the dryland forest on the Peruvian Pacific coast. Dendrochronological data from living populations have shown its response to climatic events. The aim of this work was to study local differences in P. pallida growth responses to ENSO events through dendrochronological data. To do so, three algarrobo populations within a gradient of increasing temperature and precipitation from West to East were selected. Tree-ring data were correlated with the monthly temperature and precipitation from each location and with the 3.4 and 1 + 2 ENSO indices. Inland populations showed the highest correlation with the climatic conditions. The summer rainfall (January), spring temperature of the previous year, and summer temperature of the current year were significantly correlated with growth. All populations showed a significant increase in the tree-ring index during ENSO events. However, growth in no-ENSO years was also high in populations closer to the coast. Our results indicate that the proximity to the Andes Mountains, distance to the Pacific coast and distribution of algarrobo in this area make marginal inland populations more sensitive to climatic variations and ENSO events. We conclude that the P. pallida response to the climate in Northern Peru is the result of both strong climatic events and local conditions, which are estimated most accurately with the 1 + 2 ENSO index.
      PubDate: Sat, 21 Apr 2018 00:00:00 GMT
      DOI: 10.1093/forestry/cpy014
      Issue No: Vol. 91, No. 5 (2018)
  • Instructions for optimal any-aged forestry
    • Authors: Pukkala T.
      Pages: 563 - 574
      Abstract: In this study, any-aged forestry (AAF) refers to forest management in which no explicit choice is made between even- and uneven-aged management, or between rotation forest management and continuous cover forestry. Optimal AAF is more profitable than optimal even- or uneven-aged management because AAF has fewer constraints. This study developed management instructions for optimal AAF. The instructions consist of four models, the first indicating the probability that an immediate cutting in the stand is the optimal decision. In case of cutting, the second model gives the probability that partial cutting (thinning) is optimal. If thinning is selected, the remaining two models indicate how many trees should be removed from different diameter classes. The models for optimal management were based on optimized cutting schedules of 2095 stands, located in different parts of Finland. The use of the model requires that discount rate is specified, and site fertility and temperature sum of the stand are known. The required growing stock characteristics are stand basal area, mean tree diameter and the basal area of pulpwood-sized trees (dbh 8–18 cm). High stand basal area and large mean tree size increase the probability that cutting is the optimal decision. High basal area of pulpwood-sized trees increases the probability that partial cutting is optimal. Thinning from above is the optimal type of cutting in most cases. The models were tested by comparing the model-driven stand management schedules with stand-level optimizations. Schedules based on the models resulted in equally good net present values as schedules based on optimizations. When the discount rate was 3 per cent or more, the models led to similar profitability as stand-level optimization.
      PubDate: Thu, 19 Apr 2018 00:00:00 GMT
      DOI: 10.1093/forestry/cpy015
      Issue No: Vol. 91, No. 5 (2018)
  • Testing a new component ratio method for predicting total tree aboveground
           and component biomass for widespread pine and hardwood species of eastern
    • Authors: Clough B; Domke G, MacFarlane D, et al.
      Pages: 575 - 588
      Abstract: The US National Greenhouse Gas Inventory uses the component ratio method (CRM), a volume conversion approach that incorporates models for tree biomass components, for forest carbon assessments. However, the performance of the CRM relative to other methods, as well as influences on its accuracy and precision, must be evaluated. We constructed a data-driven CRM (n-CRM), used it to predict total tree and component biomass for six US tree species, and compared this approach to a reference allometric model. We also assessed the influence of size, crown dynamics, and stem growth on the performance of both methods. Results show that the n-CRM was more accurate for four species, resulting from the inclusion of more predictor variables. Both methods had high uncertainty, but the precision of n-CRM predictions was two to eight times higher for small diameter trees (<10 cm) across all species. Accuracy and precision of the crown component models (i.e. branches and foliage) was low, though better for pines than for hardwoods. Species-level analysis suggests that poor precision is influenced by crown traits and the size distribution of fitting datasets. Our results highlight needed improvements to the n-CRM, and motivate further development of data that facilitate predictive evaluation of biomass models.
      PubDate: Fri, 27 Jul 2018 00:00:00 GMT
      DOI: 10.1093/forestry/cpy016
      Issue No: Vol. 91, No. 5 (2018)
  • Effect of harvest interval and intensity on the profitability of
           uneven-aged management of Norway spruce stands
    • Authors: Juutinen A; Ahtikoski A, Mäkipää R, et al.
      Pages: 589 - 602
      Abstract: This study evaluates the profitability of uneven-aged management in boreal forests, focusing on Norway spruce (Picea abies (L.) Karst.). An individual-tree-based model EFIMOD is used to simulate the dynamics of soil organic matter, resource availability and forest growth. Considered management scenarios are constructed by varying the harvest interval and intensity (i.e. post-harvest basal area). Bare land, young stand and several uneven-aged managed mature stands are evaluated as initial stand states in the profitability analysis. The profitability of uneven-aged management is compared with traditional even-aged management. Uneven-aged management is profitable under all considered initial stand states and management scenarios with 3 per cent interest rate. Even-aged management is more profitable than uneven-aged management when the initial stand state is bare land or a young stand. The profitability is usually the opposite when uneven-aged managed mature stands are considered as the initial state. This, however, requires that the most profitable steady-state management regime, involving a 10-year harvest interval and 4 m2 ha−1 post-harvest basal area, is applied. Conversion of even-aged Norway spruce stand to uneven-aged is financially feasible when the stand structure of the even-aged stand has a wide diameter distribution of standing trees rather than the more restricted range usually associated with conventional management using thinning from below.
      PubDate: Fri, 08 Jun 2018 00:00:00 GMT
      DOI: 10.1093/forestry/cpy018
      Issue No: Vol. 91, No. 5 (2018)
  • Chemical differentiation of Bolivian Cedrela species as a tool to trace
           illegal timber trade
    • Authors: Paredes-Villanueva K; Espinoza E, Ottenburghs J, et al.
      Pages: 603 - 613
      Abstract: Combating illegal timber trade requires the ability to identify species and verify geographic origin of timber. Forensic techniques that independently verify the declared species and geographic origin are needed, as current legality procedures are based on certificates and documents that can be falsified. Timber from the genus Cedrela is among the most economically valued tropical timbers worldwide. Three Cedrela species are included in the Appendix IIIAppendix III of CITES: C. fissilis, C. odorata and C. angustifolia (listed as C. lilloi). Cedrela timber is currently traded with false origin declarations and under a different species name, but tools to verify this are lacking. We used Direct Analysis in Real Time Time-of-Flight Mass Spectrometry (DART-TOFMS) to chemically identify Cedrela species and sites of origin. Heartwood samples from six Cedrela species (the three CITES-listed species plus C. balansae, C. montana and C. saltensis) were collected at 11 sites throughout Bolivia. Mass spectra detected by DART-TOFMS comprised 1062 compounds; their relative intensities were analysed using Principal Component Analyses, Kernel Discriminant Analysis (KDA) and Random Forest analyses to check discrimination potential among species and sites. Species were identified with a mean discrimination error of 15–19 per cent, with substantial variation in discrimination accuracy among species. The lowest error was observed in C. fissilis (mean = 4.4 per cent). Site discrimination error was considerably higher: 43–54 per cent for C. fissilis and 42–48 per cent for C. odorata. These results provide good prospects to differentiate C. fissilis from other species, but at present there is no scope to do so for other tested species. Thus, discrimination is highly species specific. Our findings for tests of geographic origin suggest no potential to discriminate at the studied scale and for the studied species. Cross-checking results from different methods (KDA and Random Forest) reduced discrimination errors. In all, the DART-TOFMS technique allows independent verification of claimed identity of certain Cedrela species in timber trade.
      PubDate: Thu, 07 Jun 2018 00:00:00 GMT
      DOI: 10.1093/forestry/cpy019
      Issue No: Vol. 91, No. 5 (2018)
  • A set of SNP markers for timber tracking of Larix spp. in Europe and
    • Authors: Blanc-Jolivet C; Yanbaev Y, Kersten B, et al.
      Pages: 614 - 628
      Abstract: The verification of the geographical origin of timber is of increasing importance with the entry into force of new regulations having become effective (EU Timber Regulation, US Lacey Act and Australia Illegal Logging Prohibition Act) that regulate the trade of timber. Larch timber represents a significant portion of timber traded on the European market. It is mostly harvested in Russia, where trade of illegally harvested timber is known to occur. Although genetic data are available for Larix spp., robust and polymorphic marker tests are still lacking for timber DNA analysis. Using Restriction Site Associated DNA sequencing, we developed a set of 253 SNP loci which was screened on 916 Larix spp. individuals. Bayesian cluster analysis revealed the presence of eight genetic clusters showing a West-East pattern in Eurasia. This marker set resulted in assignment success rates to the region of origin ranging from 74 per cent to 88 per cent. From the full marker set, a subset of 76 loci was selected to allow cost-effective analysis of timber and was successfully tested on nine blind timber samples. The performance of genetic assignment methods and laboratory procedures for the analysis of timber DNA is discussed.
      PubDate: Mon, 25 Jun 2018 00:00:00 GMT
      DOI: 10.1093/forestry/cpy020
      Issue No: Vol. 91, No. 5 (2018)
  • Core values underpin the attributes of forests that matter to people
    • Authors: Anderson N; Ford R, Bennett L, et al.
      Pages: 629 - 640
      Abstract: Managers of public forests are required to balance multiple values of forests. Developing policies to represent these can be impeded by uncertainty regarding how to understand and describe values relevant to forests. This paper addresses one source of ambiguity by examining forest values at two levels of abstraction: core values of people (principles that guide in life), and valued attributes of forests (qualities of forests important to people). We used in-depth interviews with 36 members of the public in Victoria, Australia to describe the values relevant to forests at both levels. We then examined relationships between values based on a survey of members of the Victorian public (n = 915). Our study revealed valued attributes encompassing natural, production, cultural and experiential categories. We demonstrated a broader range of core values relevant to forest management than previously recognized: security (safety and stability of society) and hedonism (pleasure and sensory gratification) were expressed in addition to biospheric, altruistic and egoistic values. Associations between core values and valued attributes revealed biospheric values underpin variation in the importance given to production and natural attributes of forests. The core value of security also underpinned multiple valued attributes. By revealing a comprehensive yet succinct range of values associated with forests, this research supports development of forest policy congruent with expectations of society.
      PubDate: Wed, 25 Jul 2018 00:00:00 GMT
      DOI: 10.1093/forestry/cpy022
      Issue No: Vol. 91, No. 5 (2018)
  • Integrating urban and national forest inventory data in support of
           rural–urban assessments
    • Authors: Westfall J; Patterson P, Edgar C.
      Pages: 641 - 649
      Abstract: Due to the interest in status and trends in forest resources, many countries conduct a national forest inventory (NFI). To better understand the characteristics of woody vegetation in areas that are typically not forested, there is an increasing emphasis on urban inventory efforts where all trees both within and outside forest areas are measured. Often, these two inventories are entirely independent endeavours from data collection through analytical reporting. To holistically explore landscape-scale phenomena across the rural–urban gradient, there is a need to combine information from both sources. In this paper, methods for combining these two data sources are examined using data from an urban inventory conducted in Austin, Texas, USA, and NFI data collected in the same and surrounding areas. Approaches to aggregating areas based on sampling intensity and plot design combinations are of considerable importance for the validity of the estimation. An additional complexity can also arise due to temporal discrepancies between the two data sources. Thus, it is imperative to accurately identify all the existing sampling intensity/plot design combinations within the population of interest. Once this difficulty is surmounted, there still exist aggregation methods that will produce erroneous results. Statistically valid variance estimation arises from maintaining independence of the two samples. This approach satisfies both the proportional allocation among strata requirement as well as the necessary partitioning of the two plot designs. Difficulty in interpretation of results can also be encountered due to differences in measurement protocols across aggregated areas. Thus, analysts should have an in-depth understanding of data sources and the differences between them to avoid unintended errors. The need for rural–urban assessments are expected to increase dramatically as urban areas expand and issues such as land conversion, wildland fire and invasive species spread become of further importance.
      PubDate: Fri, 20 Jul 2018 00:00:00 GMT
      DOI: 10.1093/forestry/cpy023
      Issue No: Vol. 91, No. 5 (2018)
  • A comparison of Sitka spruce x white spruce hybrid families as an
           alternative to pure Sitka spruce plantations in upland Britain
    • Authors: Stokes V; Lee S, Forster J, et al.
      Pages: 650 - 661
      Abstract: The heavy reliance of British forestry on Sitka spruce (Picea sitchensis (Bong.) Carr.) presents a risk in a time of changing climate and increasing incidence of pests and diseases. Three experiments were established in 1987 to examine alternative species including hybrids of Sitka spruce and white spruce (Picea glauca (Moench) Voss.) (SS x WS). After 29 years, the height and diameter growth of the best-performing hybrid families was as good as that of unimproved Queen Charlotte Islands (Haida Gwaii) Sitka spruce at two sites, with slightly reduced diameter growth being the only difference at the third site. The SS x WS hybrid families also outperformed white spruce and Engelmann spruce. Performance of the hybrid families was variable and strongly associated with parentage; selection of both female and male parents should be an important consideration in any future research and breeding programmes. There was no evidence that the hybrid families performed disproportionately well at the drier of the three sites and further work would be required to investigate relative drought tolerance. The results show that the SS x WS hybrid families could be an alternative to Sitka spruce and contribute to increasing forest diversity to develop more resilient forests.
      PubDate: Fri, 17 Aug 2018 00:00:00 GMT
      DOI: 10.1093/forestry/cpy027
      Issue No: Vol. 91, No. 5 (2018)
  • Stereoscopic imaging with spherical panoramas for measuring tree distance
           and diameter under forest canopies
    • Authors: Perng B; Lam T, Lu M.
      Pages: 662 - 673
      Abstract: This study is the first to adapt stereoscopic imaging to measure tree distance and diameter under forest canopies with spherical panoramas. The proposed stereoscopy method requires two spherical panoramas taken at a known distance directly on top of each other. The geometry was comprehensively laid out. Twenty-three plots were randomly established in planted forests. Sample trees were selected with a small basal area factor (BAF) for diameter at breast height and horizontal distance measurement. A larger BAF was used to subsample trees for upper stem diameters. Only fully visible trees were used in the analysis. Results showed that precision decreased with increasing distance from plot centre. Tree distance could be accurately and precisely estimated up to a distance of ~10 m from plot centre. For tree diameters, better accuracy and precision was achieved when a tree was within 5 m from plot centre or its diameter was less than 20 cm. Maintaining the required vertical displacement between panoramas was challenging in the field due to difficult terrain and heavy equipment, which are likely sources of error. With continued advancement in photography equipment, shooting spherical panorama becomes easier. Our proposed method could potentially lead to a citizen science based forest resources monitoring programme.
      PubDate: Sat, 18 Aug 2018 00:00:00 GMT
      DOI: 10.1093/forestry/cpy028
      Issue No: Vol. 91, No. 5 (2018)
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