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动物对植物的取食,即植食过程,是自然界最为常见的生物间相互作用之一。这一过程对植物的生长、繁殖、生存以及生物多样性维持有着深远影响。然而,自然界中的植食程度在不同物种之间差异巨大,如何解释这种差异,已成为当前群落生态学领域数十年来关注的基本科学问题之一。
干旱区覆盖了全球40%以上土地面积,具有巨大的储碳潜力,但其土壤有机碳含量较低。一般认为,干旱条件抑制植物生长,降低其在土壤中的碳源输入。然而,土壤有机碳储量取决于有机碳源输入与分解之间的平衡。土壤有机碳的组成控制其微生物分解过程,其中,溶解性有机质(DOM)是土壤中最活跃的碳组分。因此,认识溶解性有机质组成和可降解性特征及其微生物驱动机制,将有助于深入理解干旱区土壤储碳机制。
The invasive bark beetle species Dryocoetes himalayensis Strohmeyer, 1908, originated from Himalayan regions, arrived in Europe in the 1970s, and is now considered to be established in several Europe...
Mathematical modeling can ground communication and reciprocal enrichment among fields of knowledge whose domains are very different. We propose a new mathematical model applicable in biology, specifie...
The microbiota of the human large intestine influences health and well-being. Whereas it has long been accepted that gut bacteria play a role in host pathogenesis, current opinion is that certain m...
The gastrointestinal tract of a normal fetus is sterile. During the birth process and rapidly thereafter, microbes from the mother and surrounding environment colonize the gastrointestinal tract of...
The status of population genetics has become hotly debated among biologists and philosophers of biology. Many seem to view population genetics as relatively unchanged since the Modern Synthesis and ha...
This study was performed to investigate the effect of different levels of dietary crude protein (CP) on composition of odorous compounds and bacterial communities in pig manure. A total of 48 male pig...
In northern U.S. vegetable cropping systems, attempts at no-till (NT) production have generally failed because of poor crop establishment and delayed crop maturity. Strip tillage (ST) minimizes these...
The study of ecosystems in action, by measuring ecosystem recovery from disturbance, resistance to alterations, and the reversibility of ecosystem changes, highlights features of natural communities ...
Commercial whaling decimated many whale populations, including the eastern Pacific gray whale, but little is known about how population dynamics or ecology differed prior to these removals. Of partic...
A key tool in evolutionary ecology is information about the temporal dynamics of species over time. Paleontology has long been the major source of this information, however, a very different source ...
Tremendous attention has been focused on the loss of and threats to, terrestrial biodiversity. Until very recently (Norse, 1993), much less attention was devoted to marine biodiversity despite the fac...
The presence of patches and layers in marine pelagic ecosystems may play an important role in providing food for higher trophic levels at concentrations high enough to support the metabolism, growth, ...
The abundance and fecundity of life on this planet is directly related to the energy supplied by the sun. The pyramid of life starts with the absorption of a fraction of this energy, followed by its c...

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