![]() ![]() In forests, invasions affect primary productivity and nutrient availability, change fire regimes, and alter species composition, resulting in long-term impacts on carbon pools and fluxes (Peltzer et al. In natural and seminatural systems such as rangelands, invasive plant species not only threaten livestock production through diminished forage quality, poisoning and other deleterious effects, but have cascading effects on other processes such as altered fire regimes and water cycling (Brooks et al. Their arrival into cultivated systems is constantly reshaping crop production strategies, making agriculture unviable on occasions. Invasive alien species are another source of biological degradation. 2007184) or progressive intensification of land use. In forests, extractive logging can be a pervasive cause of degradation, leading to long-term impoverishment and, in extreme cases, a full loss of the forest cover through its interaction with other agents such as fires (Foley et al. 2007182), in some cases with higher carbon sequestration potential, yet with very complex interactions between vegetation and soil carbon shifts (Piñeiro et al. In rangelands, selective grazing and its interaction with climate variability and/or fire can push ecosystems to new compositions with lower forage value and a higher proportion of invasive species (Illius and O ÌConnor 1999181 Sasaki et al. Change in plant composition of natural or semi-natural ecosystems without any significant vegetation structural changes is another pathway of degradation affecting rangelands and forests. These processes have accelerated since the mid-1800s over most continents (Van Auken 2009180). Woody encroachment of open savannahs involves the expansion of woody plant cover and/or density over herbaceous areas and often limits the secondary productivity of rangelands (Asner et al. Not all biotic degradation processes involve biomass losses. This clearing process is associated with net carbon losses from the vegetation and soil pool. Vegetation clearing processes associated with land-use changes are not limited to deforestation but include other natural and seminatural ecosystems such as grasslands (the most cultivated biome on Earth), as well as dry steppes and shrublands, which give place to croplands, pastures, urbanisation or just barren land. The biotic components of the land can also be the focus of degradation processes. Instead, the command now creates a directory named the sameas the second part of the package name after the colon (without the usernameprefix). Meteor create -package now no longer creates a directory with the fullname of the package, since Windows file systems cannot have colon charactersin file paths. ![]() Thanks to caching improvements for thefiles.stat,lstat,readdir,realpath methods andPackageSource#_findSources, development server restart times are nolonger proportional to the number of files in node_modulesdirectories. That said, if a Meteor package author really needs or wants tocontinue using meteor publish-for-arch, she should publish her packageusing an older release: e.g. Instead, binarydependencies will be rebuilt automatically on the installation side.Meteor package authors are not responsible for failures due to compilertoolchain misconfiguration, and any compilation problems with theunderlying npm packages should be taken up with the authors of thosepackages. ![]() The meteor publish-for-arch command is no longer necessary whenpublishing Meteor packages with binary npm dependencies. For larger apps, this change results insignificant build performance improvements due to the creation of fewerfibers and the avoidance of unnecessary asynchronous delays. The flag is likely to return inMeteor 1.6, where it has not exhibited any of the same problems.Ī new Development.md document has been created to providean easier path for developers looking to make contributions to Meteor Core(that is, the meteor tool itself) along with plenty of helpful remindersfor those that have already done so!#8267įile system operations performed by the command-line tool no longer usefibers unless the METEOR_DISABLE_FS_FIBERS environment variable isexplicitly set to a falsy value. ![]() Although this flag allowed the build process to bemore aggressive about collecting garbage, it was also a source ofproblems in Meteor 1.5.2 and Node 4.8.4, from increased segmentationfaults during (the more frequent) garbage collections to occasionalslowness in rebuilding local packages. The command-line meteor tool no longer invokes node with the-expose-gc flag. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |