In response these events, fish farmers are developing mitigating strategies, such as situating cages out of tidal eddies, watch keeping (early warning) system, deploying mesh or bubble screens, and increasing oxygen levels by aeration (Rodger et al., 2011). 4.17.13.5 Energy Supply From Power ...
JELLYFISHThe secret lives of Long regarded as minor players in ocean ecology, jellyfish are actually important parts of the marine food web. BY GARRY HAMILTON Jennifer Purcell watches intently as the boom of the research ship Skookum slowly eases a 3-metre-long plankton net out of Puget Sound...
Sommer U, Stibor H, Katechakis A, Sommer F, Hansen T (2002) Pelagic food web configurations at different levels of nutrient richness and their implications for the ratio fish production: primary production. Hydrobiologia 484:11–20 Article Google Scholar Soonthonvipat U (1976) Dried jelly ...
to 10 particles L−1 in Chinese waters (Zhu et al., 2019), and their small size (1 μm to 5 mm) has resulted in concerns regarding their effects on aquatic biota, for which ingestion has been observed at all levels of biological organization (reviewed by De Ruijter et al., 2020)....
Though R. esculentum podocysts could survive extreme environmental conditions such as hypoxia and low salinity, excystment rates were markedly reduced compared to those of other bloom jellyfish species when the DO and salinity levels were returned to normal....
Despite this decline, jellyfish abundance in this LME appears sustained above the levels observed in the 1980s and the increase remains significant. Other long-term studies show similar variability, such as the 37-year dataset from Peru (Quiñones et al., 2010). Jellyfish populations in that...
cages out of tidal eddies, watch keeping (early warning) system, deploying mesh or bubble screens, and increasing oxygen levels by aeration (Rodgeret al., 2011). 4.17.13.5Energy Supply From Power Stations Many nuclear- and coal-fired power stations are located at or near the coast because ...
tuberculata remains in the upper levels of the water column, probably due to their photosynthetic capacity, while R. pulmo can perform vertical displacements, thus making prey from deeper waters available to the hosted fish. Nematocysts were found in the gut contents of T. mediterraneus juveniles...
(ATAGO ATC FG-217 with a precision of ± 1%). pH was measured using testing pH paper (Hydrion, range 0.0 to 13.0 pH). Transparency levels were measured using a Secchi disk following the protocol of English et al (1994). Flow velocity was estimated using buoys, which were held ...
Concern of pelagic gelatinous organisms taking over perturbed marine ecosystems has led to a recent increase in research into this group. However, the sign