We call these estimates of range and variation, reference conditions or reference variation (RV), and discuss how forest managers might use them when evaluating current landscape patterns to identify changes that may have important ecological implications.
Our fixed effects approach relaxes some of the limitations to causal inferences from ecological associations, yet unmeasured drivers of mortality changes that may cluster with the Global Fund in time and in geographical distribution remain a concern.
Landscape networks and ecosystems worldwide are undergoing changes that may impact in different ways relevant ecological processes such as gene flow, pollination, or wildlife dispersal.
Thus, if the ecological niche of A. baumannii were more restricted than that of other species, its population size may have been contracted by ecological changes that reduced its habitat.
Evolution happens for a reason; for example, dramatic climatic change causing environmental degradation can result in mass extinction which in turn creates ecological opportunities that may trigger evolutionary change.
Considerable environmental and ecological changes are anticipated that may result in new habitats for the oncomelanid intermediate snail host of Schistosoma japonicum (Sj), thereby increasing the risk of transmission.
To improve land-use management, we surveyed the availability of ecological and socioeconomic indicators that may better track such changes.
Results from animal models and patient studies indicated that enteric bacterial overgrowth and microfloral ecological changes may contribute to the influx of enteric bacteria [ 4, 8, 25].
Concept – Comparative study approaches yield correlative data, including abundances in ecological attributes, such as woodland groves or sandbars, that may change following damming.
The study reveals a fascinating change in the ecological relationship between two species defined by their environment -- and it gives a glimpse at the kind of complex, unexpected changes that climate change may bring, Pringle added.
