Increased carbon dioxide availability alters phytoplankton stoichiometry and affects carbon cycling and growth of a marine planktonic herbivore


Autoria(s): Schoo, Katherina L; Malzahn, Arne M; Krause, Evamaria; Boersma, Maarten
Data(s)

21/01/2015

Resumo

Rising levels of CO2 in the atmosphere have led to increased CO2 concentrations in the oceans. This enhanced carbon availability to the marine primary producers has the potential to change their nutrient stoichiometry, and higher carbon to nutrient ratios are expected. As a result, the quality of the primary producers as food for herbivores may change. Here, we present experimental work showing the effect of feeding Rhodomonas salina grown under different pCO2 (200, 400 and 800 µatm) on the copepod Acartia tonsa. The rate of development of copepodites decreased with increasing CO2 availability to the algae. The surplus carbon in the algae was excreted by the copepods, with younger stages (copepodites) excreting most of their surplus carbon through respiration, and adult copepods excreting surplus carbon mostly as DOC. We consider the possible consequences of different excretory pathways for the ecosystem. A continued increase in the CO2 availability for primary production, together with changes in the nutrient loading of coastal ecosystems, may cause changes in the trophic links between primary producers and herbivores.

Formato

application/zip, 3 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.841765

doi:10.1594/PANGAEA.841765

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Schoo, Katherina L; Malzahn, Arne M; Krause, Evamaria; Boersma, Maarten (2013): Increased carbon dioxide availability alters phytoplankton stoichiometry and affects carbon cycling and growth of a marine planktonic herbivore. Marine Biology, 160, 2145-2155, doi:10.1007/s00227-012-2121-4

Palavras-Chave #BIOACID; Biological Impacts of Ocean Acidification; C/N; C/P; C1 stage; C2 stage; C3 stage; C4 stage; Carbon, organic, dissolved excreted per individual; Carbon/Nitrogen ratio; Carbon/Phosphorus ratio; CO2; Development; Development rate; DOC/ind; Exp; Experiment; Experimental treatment; Exp trtm; Fig; Figure; molar; Nauplii stage; Perc; Percentage; Resp C/ind; Respiration rate, carbon, per individual; Stage
Tipo

Dataset