"This new edition builds on the explosion of research on sustainable agriculture since the late 1980s. By separating myth from reality, Miguel Altieri extracts the key principles of sustainable agriculture and expounds on management systems that really work. Providing case studi…
"This new edition builds on the explosion of research on sustainable agriculture since the late 1980s. By separating myth from reality, Miguel Altieri extracts the key principles of sustainable agriculture and expounds on management systems that really work. Providing case studi…
Phenology is the study of plant and animal life cycle events, which are triggered by environmental changes, especially temperature. Wide ranges of phenomena are included, from first openings of leaf and flower buds, to insect hatchings and return of birds. Each one gives a ready…
Phenology is the study of plant and animal life cycle events, which are triggered by environmental changes, especially temperature. Wide ranges of phenomena are included, from first openings of leaf and flower buds, to insect hatchings and return of birds. Each one gives a ready…
Studies on environmental impacts of agricultural production activities.
Extinction rates exceed any in recent history. Simultaneously, invasive species are invading new areas and increasing in abundance. The leading proposed drivers of biodiversity loss include habitat destruction, urban and agricultural development, climate change, and biological i…
Evolution acts at the level of populations. From differences in allele frequencies or trait frequencies among populations, we can make inferences about the forces that are most important in selection and gene flow at a specific point in time for specific systems. In this dissert…
In most seasonally breeding vertebrates, changes in photoperiod trigger the remodeling of neuroendocrine and glial cells known to be involved in activation of the reproductive axis. We used electron microscopy to determine whether similar remodeling occurs under conditions of co…
Human-driven climate, habitat, and land use changes often co-occur in ecological communities. We must consider the multiple components of global change acting on individual species and assemblages to document biological responses to environmental change and determine the mechani…
Terrestrial vegetation plays a key role in land surface-atmosphere interactions as the primary link for moisture (evapotranspiration) and energy (latent) exchange. Consequently, the regional to global effects of historical and expected land use/cover changes (LUCCs) due to both …
Land surface phenology describes events in a seasonal vegetation cycle and can be used in a variety of applications from predicting onset of future drought conditions, to revealing potential limits of historical dry farming, to guiding more accurate dating of archeological sites…
Leaf longevity is a fundamental process underlying patterns of variation in foliar phenology and determining the distinction between deciduous and evergreen plant species. Variation in leaf longevity is associated with a wide array of differences in the physiology, anatomy, morp…
Trade-offs are useful for understanding patterns of variation among life history traits because they can explain why fitness cannot be maximized for all traits. Among these traits is flowering phenology, which is of ecological importance in Lythrum salicaria (purple loosestrife)…
All environments in nature fluctuate, and a globally common mode of fluctuation is cyclical: daily, tidal, seasonal, and even decadal. Organisms must adapt the scheduling of their life cycles-or 'life-histories'-to fit the cycles of the physical environments in which they reside…