
Jana HinnersHelmholtz-Zentrum Hereon | HZG · Institute of Carbon Cycles
Jana Hinners
Doctor of Philosophy
About
24
Publications
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169
Citations
Introduction
Additional affiliations
December 2018 - November 2020
January 2015 - October 2018
Education
September 2012 - June 2013
October 2011 - August 2014
October 2008 - September 2011
Publications
Publications (24)
Global warming poses a major threat to marine ecosystems, which fulfill important functions for humans and the climate. Ecosystem models are therefore increasingly used to estimate future changes in the functioning of marine ecosystems. However, projections differ notably between models. We propose that a major uncertainty factor in current models...
Global warming is a major threat to marine biodiversity and ecosystem functioning, with consequences that are yet largely unknown. To frame these consequences, we need to understand how marine ecosystems respond to warming and related environmental changes. Ecosystem models have proven to be a valuable tool in this respect, but their projections va...
Global warming poses a major threat to marine ecosystems, which fulfill important functions for humans and the climate. Ecosystem models are therefore increasingly used to estimate future changes in the functioning of marine ecosystems. However, projections differ notably between models. We propose that a major uncertainty factor in current models...
The interplay of phytoplankton competition and adaptation affects how phytoplankton, and ultimately marine ecosystems, respond to global warming. However, current ecosystem models that are run under global warming scenarios do not include both processes simultaneously. To fill this gap, we developed an innovative ecosystem model for the Baltic Sea...
Phytoplankton are photosynthetic marine microbes that affect food webs, nutrient cycles and climate regulation. Their roles are determined by correlated phytoplankton functional traits including cell size, chlorophyll content and cellular composition. Here, we explore patterns of evolution in interrelated trait values and correlations. Because both...
Marine viruses have been identified as key players in biogeochemical cycles and in the termination of phytoplankton blooms; however, most biogeochemical models have yet to resolve viral dynamics. Here, we incorporate a viral component into a 1D ecosystem model to explore the influence of viruses on ecosystem dynamics under current and future climat...
Marine microbes like diatoms make up the base of marine food webs and drive global nutrient cycles. Despite their key roles in ecology, biogeochemistry, and biotechnology, we have limited empirical data on how forces other than adaptation may drive diatom diversification, especially in the absence of environmental change. One key feature of diatom...
Recently, we found that dinoflagellate Noctiluca scintillans proliferates more frequently and intensively in many regions around the globe, including the North Sea. This organism tolerates rapidly changing conditions, thrives under eutrophication, and exhibits multiple reproductive strategies, leading to intense and rapid blooms, which can affect c...
Phytoplankton are photosynthetic marine microbes that affect food webs, nutrient cycles, and climate regulation. Their roles are determined by a correlated set of phytoplankton functional traits including cell size, chlorophyll content, and cellular composition. Here, we explore how interrelated trait values and correlations evolve. Because both ch...
The interplay of phytoplankton competition and adaptation affects how phytoplankton, and ultimately marine ecosystems, respond to global warming. However, current ecosystem models do not consider both processes simultaneously. To study how the interplay of competition and adaptation affects phytoplankton responses to global warming, we developed an...
Marine viruses have been identified as key players in biogeochemical cycles and in the termination of phytoplankton blooms; however, most models of biogeochemical processes have yet to resolve viral dynamics. Here, we incorporate a viral component into a 1D ecosystem model for the Baltic Sea to explore the influence of viruses on ecosystem dynamics...
Unicellular photosynthetic marine microbes, or phytoplankton, make up the base of marine food webs and drive global nutrient cycles. Despite their key roles in ecology and biogeochemistry, we have a limited understanding of how the basic features of their demographics along with dynamic environments affect trait evolution. A key feature of diatom e...
Trait-based approaches to phytoplankton ecology have gained traction in recent decades as phenotypic traits are incorporated into ecological and biogeochemical models. Here, we use high-throughput phenotyping to explore both intra- and interspecific constraints on trait combinations that are expressed in the cosmopolitan marine diatom genus Thalass...
High-throughput methods for phenotyping microalgae are in demand across a variety of research and commercial purposes. Many microalgae can be readily cultivated in multi-well plates for experimental studies which can reduce overall costs, while measuring traits from low volume samples can reduce handling. Here we develop a high-throughput quantitat...
Microbes form the base of food webs and drive biogeochemical cycling. Predicting the effects of microbial evolution on global elemental cycles remains a significant challenge due to the sheer number of interacting environmental and trait combinations. Here, we present an approach for integrating multivariate trait data into a predictive model of tr...
Microbes form the base of food webs and drive biogeochemical cycling. Predicting the effects of microbial evolution on global elemental cycles remains a significant challenge due to the sheer number of interacting environmental and trait combinations. Here we present an approach for modeling the interactive effects of de novo biological change and...
Protocol for the preparation of phytoplankton samples for elemental carbon and nitrogen analyses.
Cryopreservation and thawing protocol for Thallasiosira diatoms.
Due to its crucial role in the ecosystem, phytoplankton is incorporated in marine ecosystem models. Most models however neglect the evolutionary potential of phytoplankton. Previous resurrection experiments with a spring bloom dinoflagellate suggest that the past century of global warming has caused an adaptive response in an important life cycle t...
The history of expansion of bloom-forming cold water dinoflagellates in the Northern Baltic Sea was studied using 100-year-old sediment archives of their resting cysts. Vertical cyst distributions of Biecheleria baltica and Apocalathium malmogiense, two dinoflagellates indistinguishable by light microscopy and not recognized as distinct species in...
Using resurrection experiments with resting stages from living sediment archives, it is possible to investigate whether adaptation occurred. For this study, we revived resting cysts of the spring bloom dinoflagellate Apocalathium malmogiense from recent and 100-year-old sediment layers from the Gulf of Finland, and compared temperature-dependent tr...
We simulate pH-dependent growth of cyanobacteria with an ecosystem model for the central Baltic Sea. Four model components-a life cycle model of cyanobacteria, a biogeochemical model, a carbonate chemistry model and a water column model-are coupled via the framework for aquatic biogeochemical models. The coupled model is forced by the output of a r...