Modeling of intra-annual abundance distributions: Constancy and variation in the phenology of marine phytoplankton species over five decades at Helgoland Roads (North Sea)

Mirco Scharfe and Karen Helen Wiltshire

Ecological Modelling, 2019, vol. 404, issue C, 46-60

Abstract: Annually recurring environmental processes such as the cycle of temperature and light drive the phenology of marine plankton populations. Improved knowledge about the homogeneity and amplitude of the phenological response of phytoplankton to climate change is essential for an assessment of ecological consequences on the marine ecosystem. We analyzed phenological variability of 21 phytoplankton species monitored work-daily at Helgoland Roads from 1962-2015. We used a function of “Weibull”-type to estimate phenological dates of species-specific abundance peaks. The combination of derived dates and peak abundances formed the basis for the analyses of long-term changes in phenological time slots and associated environmental conditions.

Keywords: Marine phytoplankton; Phenology; Weibull fitting; Peak modeling; Seasonal variability; Warming; North Sea; Helgoland Roads (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:eee:ecomod:v:404:y:2019:i:c:p:46-60

DOI: 10.1016/j.ecolmodel.2019.01.001

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