Physiological Diversity and Its Ecological Implications

Species delimitation in fungal endophyte diversity studies and its implications in ecological and biogeographic inferences.

The estimation of species diversity in fungal endophyte communities is based either on species counts or on the assignment of operational taxonomic units (OTUs). Consequently, the application of different species recognition criteria affects not only diversity estimates but also the ecological hypotheses that arise from those observations. The main objective of the study was to examine how the ...

Anatomical Diversity in Roots of Seven Species of Abronia from California and Its Ecological Implications

Fungal endophytes in neotropical trees: Abundance, diversity, and ecological implications

Although fungi comprise only ca. 72,000described species, many authors rank them among hyperdiversetaxa, comparing fungi with nematodes, mites and insects in terms of global species richness (Cqlwell and Coddington, 1994;Hawksworth et al., 1995).However, the true scale of fungal diversity is a matter of open debate, with estimates ranging from hundreds of thousands of species (Aptroot, 1997)to ...

Sodium/calcium exchange: its physiological implications.

The Na+/Ca2+ exchanger, an ion transport protein, is expressed in the plasma membrane (PM) of virtually all animal cells. It extrudes Ca2+ in parallel with the PM ATP-driven Ca2+ pump. As a reversible transporter, it also mediates Ca2+ entry in parallel with various ion channels. The energy for net Ca2+ transport by the Na+/Ca2+ exchanger and its direction depend on the Na+, Ca2+, and K+ gradie...

Diversity in current ecological thinking: implications for environmental management.

Current ecological thinking emphasizes that systems are complex, dynamic, and unpredictable across space and time. What is the diversity in interpretation of these ideas among today's ecologists, and what does this mean for environmental management? This study used a Policy Delphi survey of ecologists to explore their perspectives on a number of current topics in ecology. The results showed gen...