Data from: Biological modification of coastal pH depends on community composition and time

Biological processes play important roles in determining how global
changes manifest at local scales. Primary producers can absorb increased
CO2 via daytime photosynthesis, modifying pH in aquatic ecosystems. Yet
producers and consumers also increase CO2 via respiration. It is unclear
whether biological modification of pH differs across the year, and, if so,
what biotic and abiotic drivers underlie temporal differences. We
addressed these questions using intensive study of tide pool ecosystems in
Alaska, USA, including quarterly surveys of 34 pools over one year and
monthly surveys of 5 pools from spring to fall in a second year. Here, we
report values for physical conditions and changes in pH and dissolved
oxygen during day and night as part of our effort to link physical and
biological processes - and particularly the importance of time of year in
determining the relationship between community composition and pH
conditions - in coastal ecosystems.