scholarly journals Multigenerational Exposure to Ocean Acidification during Food Limitation Reveals Consequences for Copepod Scope for Growth and Vital Rates

2014 ◽  
Vol 48 (20) ◽  
pp. 12275-12284 ◽  
Author(s):  
Sindre A. Pedersen ◽  
Ole Jacob Håkedal ◽  
Iurgi Salaberria ◽  
Alice Tagliati ◽  
Liv Marie Gustavson ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Food Limitation ◽  
Vital Rates ◽  
Scope For Growth

Variation in scope for growth: a test of food limitation among intertidal mussels

Hydrobiologia ◽  
2007 ◽  
Vol 586 (1) ◽  
pp. 373-392 ◽  
Author(s):  
Jeremy G. Helson ◽  
Jonathan P. A. Gardner
Keyword(s):  
Food Limitation ◽  
Scope For Growth

scholarly journals Effects of low pH and raised temperature on egg production, hatching and metabolic rates of a Mediterranean copepod species (Acartia clausi) under oligotrophic conditions

2013 ◽  
Vol 15 (1) ◽  
pp. 74 ◽  
Author(s):  
S. ZERVOUDAKI ◽  
C. FRANGOULIS ◽  
L. GIANNOUDI ◽  
E. KRASAKOPOULOU
Keyword(s):  
Ocean Acidification ◽  
Egg Production ◽  
Multiple Stressors ◽  
Low Ph ◽  
Combined Effect ◽  
Vital Rates ◽  
Coastal Station ◽  
Acartia Clausi ◽  
Negative Effect ◽  
Egg Production Rate

This study includes the first information on the combined effect of low pH and raised temperature on egg production rate (EP), hatching success (HS), excretion and respiration of the Mediterranean copepod Acartia clausi. Adult individuals of A. clausi and fresh surface seawater were collected at a coastal station in Saronikos Gulf during April 2012. Four different conditions were applied: two different pH levels (present: 8.09 and future: 7.83) at two temperature values (present: 16°C and present+4 °C= 20°C). EP and HS success decreased significantly over the duration of exposure at future pH at both temperature conditions. However, the analysis of the combined effect of pH, T, chlorophyll α and the duration of the experiments on EP and HS revealed that ocean acidification had no discernible effect, whereas warming; food and the duration of exposure were more significant for the reproductive output of A. clausi. Temperature appeared to have a positive effect on respiration and excretion. Acidification had no clear effect on respiration, but a negative effect on the A. clausi excretion was observed. Acidification and warming resulted in the increase of the excretion rate and the increase was higher than that observed by warming only. Our findings showed that a direct effect of ocean acidification on copepod’s vital rates was not obvious, except maybe in the case of excretion. Therefore, the combination of acidification with the ambient oligotrophic conditions and the warming could result in species being less able to allocate resources for coping with multiple stressors.

scholarly journals Ocean acidification and food limitation combine to suppress herbivory by the gastropod Lacuna vincta

2019 ◽  
Vol 627 ◽  
pp. 83-94 ◽  
Author(s):  
CS Young ◽  
A Lowell ◽  
B Peterson ◽  
CJ Gobler
Keyword(s):  
Ocean Acidification ◽  
Food Limitation ◽  
Lacuna Vincta

scholarly journals Divergent responses of Atlantic cod to ocean acidification and food limitation

2019 ◽  
Vol 25 (3) ◽  
pp. 839-849 ◽  
Author(s):  
Martina H. Stiasny ◽  
Michael Sswat ◽  
Felix H. Mittermayer ◽  
Inger‐Britt Falk‐Petersen ◽  
Nalani K. Schnell ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Atlantic Cod ◽  
Food Limitation

scholarly journals Physiological responses and scope for growth in a marine scavenging gastropod, Nassarius festivus (Powys, 1835), are affected by salinity and temperature but not by ocean acidification

2015 ◽  
Vol 73 (3) ◽  
pp. 814-824 ◽  
Author(s):  
Haoyu Zhang ◽  
Paul K. S. Shin ◽  
Siu Gin Cheung
Keyword(s):  
Ocean Acidification ◽  
Absorption Rate ◽  
Weak Interactions ◽  
Benthic Communities ◽  
Physiological Responses ◽  
Exposure Period ◽  
Elevated Pco2 ◽  
Intergovernmental Panel ◽  
Scope For Growth ◽  
Positive Effects

Abstract In the past few years, there has been a dramatic increase in the number of studies revealing negative or positive effects of ocean acidification on marine organisms including corals, echinoderms, copepods, molluscs, and fish. However, scavenging gastropods have received little attention despite being major players in energy flow, removing carrion, and recycling materials in marine benthic communities. The present study investigated the physiological responses (ingestion, absorption rate and efficiency, respiration, and excretion) and scope for growth (SfG) of an intertidal scavenging gastropod, Nassarius festivus, to the combined effects of ocean acidification (pCO2 levels: 380, 950, and 1250 µatm), salinity (10 and 30 psu), and temperature (15 and 30°C) for 31 d. Low salinity (10 psu) reduced ingestion, absorption rate, respiration, excretion, and SfG of N. festivus throughout the exposure period. Low temperature (15°C) had a similar effect on these parameters, except for SfG at the end of the exposure period (31 d). However, elevated pCO2 levels had no effects in isolation on all physiological parameters and only weak interactions with temperature and/or salinity for excretion and SfG. In conclusion, elevated pCO2 will not affect the energy budget of adult N. festivus at the pCO2 level predicted to occur by the Intergovernmental Panel on Climate Change (IPCC) in the year 2300.

Effects of food limitation and emigration on self-thinning in experimental minnow cohorts

2000 ◽  
Vol 69 (6) ◽  
pp. 927-934 ◽  
Author(s):  
J. B. Dunham ◽  
B. R. Dickerson ◽  
E. Beever ◽  
R. D. Duncan ◽  
G. L. Vinyard
Keyword(s):  
Food Limitation
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