English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/131722
Título

Defining Planktonic Protist Functional Groups on Mechanisms for Energy and Nutrient Acquisition: Incorporation of Diverse Mixotrophic Strategies

AutorMitra, Aditee; Calbet, Albert ; Lundgren, Veronica
Palabras clavePlankton functional types
Phagotroph
Phototroph
Mixotroph
Phytoplankton
Microzoo-plankton
PFTs
Fecha de publicaciónabr-2016
EditorUrban and Fischer
CitaciónProtist 167(2): 106-120 (2016)
ResumenArranging organisms into functional groups aids ecological research by grouping organisms (irrespective of phylogenetic origin) that interact with environmental factors in similar ways. Planktonic protists traditionally have been split between photoautotrophic “phytoplankton” and phagotrophic “microzooplankton”. However, there is a growing recognition of the importance of mixotrophy in euphotic aquatic systems, where many protists often combine photoautotrophic and phagotrophic modes of nutrition. Such organisms do not align with the traditional dichotomy of phytoplankton and microzooplankton. To reflect this understanding, we propose a new functional grouping of planktonic protists in an eco-physiological context: (i) phagoheterotrophs lacking phototrophic capacity, (ii) photoautotrophs lacking phagotrophic capacity, (iii) constitutive mixotrophs (CMs) as phagotrophs with an inherent capacity for phototrophy, and (iv) non-constitutive mixotrophs (NCMs) that acquire their phototrophic capacity by ingesting specific (SNCM) or general non-specific (GNCM) prey. For the first time, we incorporate these functional groups within a foodweb structure and show, using model outputs, that there is scope for significant changes in trophic dynamics depending on the protist functional type description. Accordingly, to better reflect the role of mixotrophy, we recommend that as important tools for explanatory and predictive research, aquatic food-web and biogeochemical models need to redefine the protist groups within their frameworks
DescripciónMitra, Aditee ... et. al.-- 15 pages, 5 figures
Versión del editorhttp://dx.doi.org/10.1016/j.protis.2016.01.003
URIhttp://hdl.handle.net/10261/131722
DOI10.1016/j.protis.2016.01.003
Identificadoresdoi: 10.1016/j.protis.2016.01.003
issn: 1434-4610
e-issn: 1618-0941
Aparece en las colecciones: (ICM) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.