Non-Nitrogen-Fixers or Nitrogen-Fixers? Factors Distinguishing the Dominance of Chroococcal and Diazotrophic Cyanobacterial Species.

Global warming and eutrophication are the main factors driving the development of cyanobacterial dominance in aquatic ecosystems. We used a model linking water temperature, oxygen saturation, concentrations of PO, NO, NH, total dissolved iron (TDFe), and SO to cyanobacteria to test the turnover patterns of cyanobacterial dominance of non-nitrogen-fixing (chroococcal species) and nitrogen-fixing (filamentous diazotrophic) species. Statistical analysis was performed using decision trees.

Interactions between Ciliate Species and Vary Depending on the Morphological Form and Biomass of the Diazotrophic Cyanobacterium.

can form extensive blooms from freshwater to the brackish environment and, being a diazotrophic species, contribute significantly to the nitrogen and carbon cycle. It occurs as single filaments or aggregates and could be used as an alternative nutrients source for bacteria and ciliates. Ciliates are a group of organisms playing a crucial role in the transfer of nitrogen from primary producers to higher trophic levels in aquatic food webs.

The use and impact of self-monitoring on substance use outcomes: A descriptive systematic review.

Self-Monitoring (SM), the act of observing ones' own behavior, has been used in substance use treatment because SM may bring conscious awareness to automatized substance use behaviors. Empirical findings regarding SM's effectiveness are mixed. The aim of this study was to synthesize the literature for the efficacy of SM on substance use.

A Preliminary Study of Associations between Discomfort Intolerance, Pain Severity/Interference, and Frequency of Cannabis Use among Individuals with Chronic Pain.

Cannabis use is more common among individuals with chronic pain, and is often used to relieve physical discomfort. However, little is known about factors that are associated with cannabis use among individuals with chronic pain, and there is reason to suspect that perceptions of discomfort intolerance (DI) play an important role in pain-cannabis relations. The goal of this study was to conduct an initial examination of perceived DI, pain severity, and pain-related interference in relation to frequency of cannabis use among individuals with chronic pain.

Variations in zooplankton functional groups density in freshwater ecosystems exposed to cyanobacterial blooms.

The recently observed decline of biodiversity has become a major problem on Earth. Anthropogenically-driven climate change and eutrophication of natural habitats represent great threats to both terrestrial and aquatic ecosystems. Particularly vulnerable are freshwater ecosystems, where the mentioned changes promote development of cyanobacteria.