Now showing items 31-40 of 1023
Regeneration of oral siphon pigment organs in the ascidian Ciona intestinalis
Ascidians have powerful capacities for regeneration but the underlying mechanisms are poorly understood. Here we examine oral siphon regeneration in the solitary ascidian Ciona intestinalis. Following amputation, the ...
Soil hydraulic response to land-use change associated with the recent soybean expansion at the Amazon agricultural frontier
Clearing for large-scale soy production and the displacement of cattle-breeding by soybeans are major features of land-use change in the lowland Amazon that can alter hydrologic properties of soils and the runoff generation ...
Neuronal calcium sensor-1 enhancement of InsP3 receptor activity is inhibited by therapeutic levels of lithium
(American Society for Clinical Investigation, 2006-06)
Regulation and dysregulation of intracellular calcium (Ca2+) signaling via the inositol 1,4,5-trisphosphate receptor (InsP3R) has been linked to many cellular processes and pathological conditions. In the present study, ...
Correction to “Importance of carbon-nitrogen interactions and ozone on ecosystem hydrology during the 21st century”
(American Geophysical Union, 2009-08-22)
Baleen whales are not important as prey for killer whales Orcinus orca in high-latitude regions
Certain populations of killer whales Orcinus orca feed primarily or exclusively on marine mammals. However, whether or not baleen whales represent an important prey source for killer whales is debatable. A hypothesis by ...
Modeling coupled biogeochemical cycles
(Ecological Society of America, 2011-02)
Organisms require about 30 essential elements to sustain life. The cycles of these elements are coupled to one another through the specific physiological requirements of the organisms. Here, I contrast several approaches ...
Suction-based propulsion as a basis for efficient animal swimming
(Nature Publishing Group, 2015-11-03)
A central and long-standing tenet in the conceptualization of animal swimming is the idea that propulsive thrust is generated by pushing the surrounding water rearward. Inherent in this perspective is the assumption that ...
Phyllosphere microbial communities of a salt-excreting desert tree : geographical location determines population structure
The leaf surfaces of Tamarix, a salt secreting desert tree, harbor a diverse community of microbial epiphytes. This ecosystem presents a unique set of ecological characteristics and imposes a set of extreme stress conditions. ...
Ecosystem feedbacks and cascade processes : understanding their role in the responses of Arctic and alpine ecosystems to environmental change
Global environmental change, related to climate change and the deposition of airborne N-containing contaminants, has already resulted in shifts in plant community composition among plant functional types in arctic and ...
Shrub encroachment in Arctic tundra : Betula nana effects on above- and belowground litter decomposition
(John Wiley & Sons, 2017-04-07)
Rapid arctic vegetation change as a result of global warming includes an increase in the cover and biomass of deciduous shrubs. Increases in shrub abundance will result in a proportional increase of shrub litter in the ...