News
Oxygen supersaturation protects coastal marine fauna from ocean warming
Abstract.
"Ocean warming affects the life history and fitness of marine organisms by, among others, increasing animal metabolism and reducing oxygen availability. In coastal habitats, animals live in close association with photosynthetic organisms whose oxygen supply supports metabolic demands and may compensate for acute warming. [...]"
Source: Science Advances
Authors: Folco Giomi et al.
DOI: 10.1126/sciadv.aax1814
Photosynthesis by marine algae produces sound, contributing to the daytime soundscape on coral reefs
Abstract.
"We have observed that marine macroalgae produce sound during photosynthesis. The resultant soundscapes correlate with benthic macroalgal cover across shallow Hawaiian coral reefs during the day, despite the presence of other biological noise. Likely ubiquitous but previously overlooked, this source of ambient biological noise in the coastal ocean is driven by local supersaturation of oxygen near the surface of macroalgal filaments, and the resultant formation and release of oxygen-containing bubbles into the water column. During release, relaxation of the bubble to a spherical shape creates a monopole sound source that ‘rings’ at the Minnaert frequency. [...]"
Source: PLOS ONE
Authors: Simon E. Freeman et al.
DOI: 10.1371/journal.pone.0201766
Decomposing the effects of ocean environments on predator–prey body-size relationships in food webs
Abstract.
"Body-size relationships between predators and their prey are important in ecological studies because they reflect the structure and function of food webs. Inspired by studies on the impact of global warming on food webs, the effects of temperature on body-size relationships have been widely investigated; however, the impact of environmental factors on body-size relationships has not been fully evaluated because climate warming affects various ocean environments. Thus, here, we comprehensively investigated the effects of ocean environments and predator–prey body-size relationships by integrating a large-scale dataset of predator–prey body-size relationships in marine food webs with global oceanographic data. We showed that various oceanographic parameters influence prey size selection. [...]"
Source: Royal Society Open Science
Authors: Tomoya Dobashi, Midori Iida, Kazuhiro Takemoto
DOI: 10.1098/rsos.180707
Oxygen Saturation Surrounding Deep Water Formation Events in the Labrador Sea From Argo‐O2 Data
Abstract.
"Deep water formation supplies oxygen‐rich water to the deep sea, spreading throughout the ocean by means of the global thermohaline circulation. Models suggest that dissolved gases in newly formed deep water do not come to equilibrium with the atmosphere. However, direct measurements during wintertime convection are scarce, and the controls over the extent of these disequilibria are poorly quantified [...]"
Source: Global Biogeochemical Cycles
Authors: Mitchell K. Wolf et al.
DOI: 10.1002/2017GB005829
Newsletter
It is possible to subscribe to our email newsletter list.
Depending on the amount of publications, we will summarize the activities on this blog in a newsletter for everyone not following the blog regularly.
If you want to subscribe to the email list to receive the newsletter, please send an email to sfb754@geomar.de with the header "subscribe".
If you want to unsubscribe from the newsletter, please send an email to sfb754@geomar.de with the header "unsubscribe".
You cannot forward any messages as a regular member to the list. If you want to suggest new articles or would like to contact us because of any other issue, please send an email to sfb754@geomar.de.