A Message from the

TL;DR: Residency programs and spine surgery fellowships need to use objective metrics to assess the impact of the pandemic on the spine surgery education of their residents and fellows in order to address any potential area of weakness caused by the decreased exposure to spine surgery.

TL;DR: In this paper, the authors point out the current limitations and potential possibilities of the Brexit Schengen Area and propose a solution to overcome the deadlock in the European Union and thus to a large extent, the Schegen Area.

TL;DR: The role of fan-ARGs in Lonelygirl15 (LG15) is examined in this article, where the authors argue that early fan ARGs became tactical strategies through which fans engaged in transgressive play and negotiated a more meaningful role within the franchise.

TL;DR: In this article, the authors introduce the concept of Silviculture and its place in the world of agriculture. But they do not discuss its application in the management of watershed ecosystems.

TL;DR: Systematic research with nonvolant mammal specimens collected as voucher material resulted in the discovery of new taxa, documented range extensions of previously described species, and helped resolve many longstanding taxonomic problems.

Abstract: In seedling survival and mortality were analyzed within the general framework of seed production and dispersal, germination, seedbed condition, soil surface temperature, insolation, soil moisture, and vegetative competition. Factors found to favor seedling establishment were abundance of sound seed, mineral soil seedbed, and probably some shade in the first year. Chief obstacles to seedling survival and growth included strong insolation, deep litter, insects, competing low vegetation, and time between good seed years. The most practical approach to securing natural regeneration appears to be keeping abundant seed trees close to a prepared mineral soil seedbed. In a group of studies at Swain Mountain Experimental Forest in northeastern California, seedling survival and mortality were analyzed within the general framework of seed production and dispersal, germination, seedbed condition, soil surface temperature, insolation, soil moisture, and vegetative competition. Factors found to favor seedling establishment were abundance of sound seed, mineral soil seedbed, and probably some shade in the first year. Chief obstacles to seedling survival and growth included strong insolation, deep litter, insects, competing low vegetation, and time between good seed years. The most practical approach In a group of studies at Swain in northeastern California, seedling survival and mortality were analyzed within the general framework of seed production and dispersal, germination, seedbed condition, soil surface temperature, insolation, soil moisture, and vegetative competition. Factors found to favor seedling establishment were abundance of sound seed, mineral soil seedbed, and probably some shade in the first year. Chief obstacles to seedling survival and growth included strong insolation, deep litter, insects, competing low vegetation, and time between good seed years. The most practical approach to securing natural regeneration appears to be keeping abundant seed trees close to a prepared mineral soil seedbed. In a group of studies at Swain Mountain Experimental Forest in northeastern California, seedling survival and mortality were analyzed within the general framework of seed production and dispersal, germination, seedbed condition, soil surface temperature, insolation, soil moisture, and vegetative competition. Factors found to favor seedling establishment were abundance of sound seed, mineral soil seedbed, and probably some shade in the first year. Chief obstacles to seedling survival and growth included strong insolation, deep litter, insects, competing low vegetation, and time between good seed years. The most practical approach

TL;DR: It is concluded that even though the principal cereal crops appear to be approaching the upper limit of harvest index, and future yield gains will have to be sought by increased biomass production, there will still be a need for the concept of harvesting index as a tool in interpreting crop response to different environments and climatic change.