Temperature Regulation of Bacterial Activity During the Spring Bloom in Newfoundland Coastal Waters

作者：Lawrence R. Pomeroy, Don Deibel · 发表于：Science · 年份：1986 · DOI：10.1126/science.233.4761.359 · 被引用次数：341 · 研究领域：Marine and coastal ecosystems、Marine Bivalve and Aquaculture Studies、Microbial Community Ecology and Physiology

While the spring phytoplankton bloom in Newfoundland coastal waters is in progress during April and May, at water temperatures between -1 degrees and +2 degrees C, bacterial growth and respiratory rates remain low. Microbial community respiration is not measurable at -0.2 degrees C. Particulate materials that would be utilized by microorganisms in 2 to 3 days at 20 degrees to 25 degrees C require 11 days at 4 degrees C and 18 days at -0.2 degrees C. Thus, photosynthesis is active but microbial utilization of the products is suppressed. High secondary production in cold water may result from the low rate of microbial decomposition, enabling herbivores to utilize much of the primary production.