THE evaluation of any acid–base disturbance requires a knowledge of the expected degree of compensation for a primary disorder of any specified magnitude. The most logical approach to this problem is ...

Sea urchin skeletons may owe some of their strength to a common geometric design. Urchin skeletons display “an incredible diversity of structures at the microscale, varying from fully ordered to ...

Our objective was to examine the relationships between patterns of vertical structure and species microassociations at various scales in a species-rich chalk grassland. Transect data were analyzed for ...