Effects of Long-Term Low Intensity Silviculture and Habitat on Birds in Nothofagus Antarctica Forests of South Patagonia

2021 ◽  
Author(s):  
Julieta Benitez ◽  
Marcelo Daniel Barrera ◽  
Francisco Javier Sola ◽  
Ana Paula Blazina ◽  
Guillermo José Martínez Pastur ◽  
...  
2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Stefan Koinzer ◽  
Amke Caliebe ◽  
Lea Portz ◽  
Mark Saeger ◽  
Yoko Miura ◽  
...  

Purpose. To correlate the long-term clinical effect of photocoagulation lesions after 6 months, as measured by their retinal damage size, to exposure parameters. We used optical coherence tomographic (OCT)-based lesion classes in order to detect and assess clinically invisible and mild lesions.Methods. In this prospective study, 488 photocoagulation lesions were imaged in 20 patients. We varied irradiation diameters (100/300 µm), exposure-times (20–200 ms), and power. Intensities were classified in OCT images after one hour, and we evaluated OCT and infrared (IR) images over six months after exposure.Results. For six consecutive OCT-based lesion classes, the following parameters increased with the class: ophthalmoscopic, OCT and IR visibility rate, fundus and OCT diameter, and IR area, but not irradiation power. OCT diameters correlated with exposure-time, irradiation diameter, and OCT class. OCT classes discriminated the largest bandwidth of OCT diameters.Conclusion. OCT classes represent objective and valid endpoints of photocoagulation intensity even for “subthreshold” intensities. They are suitable to calculate the treated retinal area. As the area is critical for treatment efficacy, OCT classes are useful to define treatment intensity, calculate necessary lesion numbers, and universally categorize lesions in clinical studies.


2018 ◽  
pp. 273-289
Author(s):  
Sudha Pai ◽  
Sajjan Kumar

The book concludes that the pattern of communalism and riots in the 2000s marks a new chapter in UP society. The reasons lie in momentous changes within UP society, and a ‘new’ BJP, its leadership, re-invented ideology and strategies. Our model of ‘institutionalization of everyday communalism’ suggests that the relationship between communalism and riots has undergone profound change: it is not riots that promote communalism; rather it is the steady and long-term work at the grass roots by right-wing forces that promotes the growth of constant communal tension. Rather than big riots, the aim is to communalize trivial, daily incidents and create small, low-intensity, calibrated incidents whose purpose is to create deep-seated Hindu–Muslim polarization. UP with its divisive communal past, economic backwardness, pervasive social inequalities, continuing conservative outlook and entrenched caste/communal identities, has produced a specific variant of communalism that will impact on the democratic fabric of our country.


2003 ◽  
Vol 348 (15) ◽  
pp. 1425-1434 ◽  
Author(s):  
Paul M Ridker ◽  
Samuel Z. Goldhaber ◽  
Ellie Danielson ◽  
Yves Rosenberg ◽  
Charles S. Eby ◽  
...  

2016 ◽  
Vol 64 (2) ◽  
pp. 171 ◽  
Author(s):  
R. J. Turner ◽  
Peter Smith

Mistletoe proliferation has contributed to eucalypt decline in rural lands in south-eastern Australia, but has seldom been recorded within forests. We report here on mistletoes increasing deep inside extensive eucalypt forest near Eden. Mistletoes (chiefly Amyema pendula (Sieber ex Spreng.) Tiegh., some Muellerina eucalyptoides (DC.) Barlow) were counted in 180 plots in various logging and burning treatments within a long-term experimental area. In 141.4 ha, there were 516 mistletoes in 1990–1991, and 1478 mistletoes in 2004–2006. The number of trees with mistletoes increased (doubling in logged coupes and almost tripling in unlogged coupes), and the number of mistletoes per tree increased (by ~30%). However, mistletoe prevalence remained low in 2004–2006 (2.7% of trees in logged coupes and 3.7% in unlogged coupes). Intensive logging limited the increase in mistletoe-bearing trees, probably because there were fewer trees available in logged coupes, but had no significant effect on the increase in mistletoes per tree. Low-intensity prescribed burns had no significant effect on mistletoe numbers, even with a high frequency of burning, probably because of their low scorch heights. We suggest that the observed increase in mistletoes in this forest, rather than indicating an ecological imbalance, is part of a natural cycle of boom and bust, with populations crashing in severe wildfires.


1984 ◽  
Vol 32 (4) ◽  
pp. 353 ◽  
Author(s):  
I Abbott ◽  
O Loneragan

Five of the six stages in the regeneration of jarrah (seedling, lignotuberous seedling, seedling coppice, ground coppice and sapling) were studied in detail. Survival of seedlings is variable but usually low, and growth into the ground coppice stage usually takes 15-20 years. Growth into the sapling stage is arrested until there is substantial reduction in intraspecific competition. Lignotuberous seedlings, seedling coppice and ground coppice growing in ashbeds show faster rates of growth in length of the long axis of the lignotuber and length of the tallest shoot. Logging and prescribed (low-intensity) fires are associated with development of more seedling coppice and growth of ground coppice into saplings and poles than is fire alone.


2017 ◽  
Vol 142 (2) ◽  
pp. 271-280 ◽  
Author(s):  
Maki Inoue-Choi ◽  
Patricia Hartge ◽  
Linda M. Liao ◽  
Neil Caporaso ◽  
Neal D. Freedman

2004 ◽  
Vol 59 (2) ◽  
pp. 78-80
Author(s):  
Clive Kearon ◽  
Jeffrey S. Ginsberg ◽  
Michael J. Kovacs ◽  
David R. Anderson ◽  
Philip Wells ◽  
...  

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