These and other characiform species play key roles for intra-ecosystem energy flux and material cycling in lowland river systems and as ecosystem engineers (e.g. Prochilodontidae - [ 3, 4]).
We established a community common garden experiment to test whether seed sources (cultivar and local ecotype) of typically dominant prairie grasses were genetically distinct and differentially affected ecosystem functioning (energy flow and material cycling).
Reconstruction of material cycling such as carbon, sulfur, and phosphorous within the earth surface is critical to understand dynamics and controlling mechanisms of climatic changes in the past and preparing for the future.
Special consideration is given to problems of reliability and sustainability of material cycling in BLSS, which are related to production of additional oxygen inside the system.
This is an obstacle to the creation of biological systems with a largely closed material cycling, because the amount of solid and liquid wastes in them must be reduced to a minimum.
BBC, the host broadcaster, was showing much older material, cycling through Martina Navratilova and Chris Evert's 1978 final; Bjorn Borg and John McEnroe's 1980 classic and the 1992 encounter between Andre Agassi and Goran Ivanisevic.
Thus, radionuclides are directly or indirectly involved in material cycling, getting redistributed among living organisms (including aquatic plants), sediments and floodplain soils, surface waters, and underflow groundwater.
His areas of expertise are agricultural sources of trace gases particularly in Asian agroecosystems, material cycling in agricultural ecosystems, isotopic measurements, as well as biogeochemistry and global environmental change.
The estimated brine composition of δD at approximately -30‰ is similar to that estimated from analysis on back-arc basin basalts or melt inclusions from the Mariana subduction zone such as -25‰ (Poreda 1985) and -32‰ (Shaw et al. 2008), respectively, and the mass balance of subduction zone-scale material cycling at δD = -27‰ (Kazahaya 1997).
Some purposes may require the design of systems that are completely closed, as far as material cycling is concerned.
