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- Jonathan Havenhand
Jonathan Havenhand
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Institutionen för marina vetenskaperOm Jonathan Havenhand
Current Research foci:
– Effects of marine climate change on benthic organisms and ecosystems
– Experimental design and statistical analysis
Effects of marine climate change on fertilization success: Many marine species release sperm and eggs freely into the water column, where fertilisation takes place. This exposes these simple single cells to the prevalent conditions of the ocean, which are changing rapidly due to changing climate. Our first research in the effects of climate change focussed on the effects of temperature on fertilization success found that temperature-induced change in swimming speeds of sperm and larvae were due to thermal changes in water viscosity, not temperature-related shifts in physiology. These remarkable results received relatively little attention in the literature at the time, but are now taking on a new significance.
We subsequently developed this work to investigate the effects of temperature, salinity and ocean acidification, as single stressors and in combination. This pioneering work showed:
- extreme sensitivity of fertilization success and early larval development to “near-future” levels of ocean acidification (Havenhand et al 2008)
- negative, but also neutral, and (in some individuals) positive effects of climate change on fertilization success (Schlegel et al 2012).
Together, these results imply that adaptation to climate change may be possible in several species
Effects of marine climate change on resilience of marine organisms & ecosystems: Focussing on barnacles, tunicates and oysters – key components of benthic marine communities – in the last few years we have found:
- substantial plasticity in the salinity- and pH-tolerance of juvenile barnacles, that may be related to novel osmo-regulatory genes
- that nutritional status and phenotype history drive the susceptibility of barnacle larvae and juveniles to ocean acidification
- that simulated natural diurnal pH fluctuations have radically different impacts on growth and calcification of barnacles than the constant pH treatments typically used in experiments
- trans-generational plasticity to salinity, and very low heritability for salinity tolerance in the tunicate Ciona
- heritability of tolerance to low-salinity in invasive populations of the oyster Crassostrea from low-salinity habitats (unpublished)
- that greater genetic diversity of barnacle larvae increases settlement success. (This was one of the first demonstrations that intra-specific diversity can increase ecosystem function)
Developing our earlier findings of substantial inter-individual variability in responses to marine climate change, a multi-partner collaborative project with Lars Gamfeldt (UGOT) and Johan Eklöf (Stockholm), among others, investigated the importance of inter-species diversity for resilience to climate change. We found:
- that indirect effects, mediated through the food web, can completely offset the direct effects of climate change in seagrass beds, and that trophic complexity can strongly reduce the impacts of climate change. (This work highlights how results from single-species experiments may not reveal how species will respond in the ecosystem).
- that the “insurance effect” of biodiversity is weakened under marine climate change
Experimental design and analysis – the importance of “non-significant” results: Designing experiments that maximize our chance to make meaningful inferences from the results is fundamental to experimental science, yet this is often overlooked in modern research that prioritizes statistical significance. This is vitally important in Climate Change research because null-hypotheses are often evaluated with weak statistical tests. Indeed, the null-hypothesis testing paradigm – which lays at the heart of modern experimental science – is inappropriate for investigations that attempt to document the magnitude of the effects of climate change. Recent research in other fields of science emphasize that reliance on P-values to draw conclusions is inappropriate.
I have worked in this field for some considerable time, optimizing experimental designs and analyses of results. Highlights of this work include:
- promoting the use of effect-size metrics, rather than statistical testing, to describe the effects of ocean acidification and warming.
- invitation to be lead-author on a chapter dealing with experimental design in the 2010 Best Practice Guide for Research in Ocean Acidification (Riebesell et al 2010; Havenhand et al 2010).
- membership of the SCOR Working Group “Changing Ocean Biological Systems”, which has entailed key publications on designing experiments for multiple climate drivers (Boyd et al 2018), and an online tool to aid the design tof mutlidriver experiments (https://meddle-scor149.org).
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The Roles of Plasticity and Selection in Rapid Phenotypic Changes at the Pacific Oyster Invasion Front in
Europe
Alexandra Kinnby, Chloé Robert, Jonathan N. Havenhand, Göran Broström, Luc Bussiere, Pierre De Wit
Molecular Ecology - 2025 -
Deep-learning-powered data analysis in plankton
ecology
Harshith Bachimanchi, Matthew I. M. Pinder, Chloé Robert, Pierre De Wit, Jonathan N. Havenhand, Alexandra Kinnby, Daniel Midtvedt, Erik Selander, Giovanni Volpe
Limnology And Oceanography Letters - 2024 -
Molecular, behavioural and morphological comparisons of sperm adaptations in a fish with alternative reproductive
tactics
Charlotta Kvarnemo, Leon Green, Ola Svensson, K. Lindstrom, Sofie Schöld, Martina Griful-Dones, Jonathan N. Havenhand, Erica H Leder
Evolutionary Applications - 2023 -
The effect of ocean acidification on otolith morphology in larvae of a tropical, epipelagic fish species, yellowfin tuna<i> (Thunnus</i><i>
albacares)</i>
J. B. Wexler, D. Margulies, V. Scholey, C. E. Lennert-Cody, D. Bromhead, S. Nicol, S. D. Hoyle, M. Stein, J. E. Williamson, Jonathan N. Havenhand
Journal of Experimental Marine Biology and Ecology - 2023 -
Ten years of marine evolutionary biology - challenges and achievements of a multidisciplinary research
initiative
Kerstin Johannesson, Erica H Leder, Carl André, Samuel Dupont, Susanne P. Eriksson, Karin C. Harding, Jonathan N. Havenhand, Marlene Jahnke, Per R. Jonsson, Charlotta Kvarnemo, Henrik Pavia, Marina Rafajlović, Eva Marie Rödström, Michael C. Thorndyke, Anders Blomberg
Evolutionary Applications - 2023 -
Temporal variation in ecological and evolutionary contributions to phytoplankton functional
shifts
G. S. I. Hattich, L. Listmann, Jonathan N. Havenhand, T. B. H. Reusch, B. Matthiessen
Limnology and Oceanography - 2023 -
Double-edged sword of desalination: Decreased growth and increased grazing endanger range-margin Fucus
populations
Leona Milec, V. Jormalainen, Luca Rugiu, Ricardo T. Pereyra, E. Rothausler, Jonathan N. Havenhand, Pierre De Wit
Journal of Experimental Marine Biology and Ecology - 2022 -
Ocean Futures for the World’s Largest Yellowfin Tuna Population Under the Combined Effects of Ocean Warming and
Acidification
S. Nicol, P. Lehodey, I. Senina, D. Bromhead, A. Y. Frommel, J. Hampton, Jonathan N. Havenhand, D. Margulies, P. L. Munday, V. Scholey, J. E. Williamson, N. Smith
Frontiers in Marine Science - 2022 -
Post-glacial establishment of locally adapted fish populations over a steep salinity
gradient
Erica H Leder, Carl André, Alan Le Moan, Mats H. Töpel, Anders Blomberg, Jonathan N. Havenhand, K. Lindstrom, Filip Volckaert, Charlotta Kvarnemo, Kerstin Johannesson, Ola Svensson
Journal of Evolutionary Biology - 2021 -
Impact of Lagrangian Sea Surface Temperature Variability on Southern Ocean Phytoplankton Community Growth
Rates
J. Zaiss, P. W. Boyd, S. C. Doney, Jonathan N. Havenhand, N. M. Levine
Global Biogeochemical Cycles - 2021 -
Sperm performance limits the reproduction of an invasive fish in novel
salinities
Leon Green, Jan Niemax, Jens Peter Herrmann, Axel Temming, Jane W. Behrens, Jonathan N. Havenhand, Erica H Leder, Charlotta Kvarnemo
Diversity and Distributions - 2021 -
Sperm adaptation in relation to salinity in three goby
species.
Kai Lindström, Jonathan N. Havenhand, Erica H Leder, Sofie Schöld, Ola Svensson, Charlotta Kvarnemo
Journal of Fish Biology - 2021 -
Ancestral Sperm Ecotypes Reveal Multiple Invasions of a Non-Native Fish in Northern
Europe
Leon Green, Apostolos Apostolou, Ellika Faust, Kajsa Palmqvist, Jane W. Behrens, Jonathan N. Havenhand, Erica H Leder, Charlotta Kvarnemo
Cells - 2021 -
Adjustments in fatty acid composition is a mechanism that can explain resilience to marine heatwaves and future ocean conditions in the habitat-forming seaweed Phyllospora comosa (Labillardiere)
C.Agardh
D. Britton, M. Schmid, F. Noisette, Jonathan N. Havenhand, E. R. Paine, C. M. McGraw, A. T. Revill, P. Virtue, P. D. Nichols, C. N. Mundy, C. L. Hurd
Global Change Biology - 2020 -
Evidence of rapid adaptive trait change to local salinity in the sperm of an invasive
fish
Leon Green, Jonathan N. Havenhand, Charlotta Kvarnemo
Evolutionary Applications - 2020 -
Sperm motility of oysters from distinct populations differs in response to ocean acidification and
freshening
L. J. Falkenberg, C. A. Styan, Jonathan N. Havenhand
Scientific Reports - 2019 -
Ocean acidification as a multiple driver: how interactions between changing seawater carbonate parameters affect marine
life
Catriona L. Hurd, John Beardall, Steeve Comeau, Christopher E. Cornwall, Jonathan N. Havenhand, Philip L. Munday, Laura M. Parker, John A. Raven, Christina M. McGraw
Marine and Freshwater Research - 2019 -
Societal causes of, and responses to, ocean
acidification.
Sverker C. Jagers, Simon Matti, Anne-Sophie Crépin, David Langlet, Jonathan N. Havenhand, Max Troell, Helena L Filipsson, Victor R Galaz, Leif G Anderson
Ambio - 2019 -
Ecological & functional consequences of coastal ocean acidification: perspectives from the Baltic-Skagerrak
system
Jonathan N. Havenhand, Helena L. Filipsson, Susa Niiranen, Max Troell, Anne-Sophie Crépin, Sverker C. Jagers, David Langlet, Simon Matti, David R. Turner, Monica Winder, Pierre De Wit, Leif G Anderson
Ambio - 2019 -
Toxic Algae Silence Physiological Responses to Multiple Climate Drivers in a Tropical Marine Food
Chain
Lucy M. Turner, Jonathan N. Havenhand, C. Alsterberg, A. D. Turner, S. K. Girisha, A. Rai, M. N. Venugopal, I. Karunasagar, Anna Godhe
Frontiers in Physiology - 2019 -
Factors affecting formation of adventitious branches in the seaweeds Fucus vesiculosus and F.
radicans
Alexandra Kinnby, Ricardo T. Pereyra, Jonathan N. Havenhand, Pierre De Wit, Per R. Jonsson, Henrik Pavia, Kerstin Johannesson
Bmc Ecology - 2019 -
Handbook to support the SCOR Best Practice Guide for ‘Multiple Drivers’ Marine
Research
Philip Boyd, S. Collins, Samuel Dupont, K. Fabricius, J.-P. Gattuso, Jonathan N. Havenhand, et al et al
2019 -
Experimental strategies to assess the biological ramifications of multiple drivers of global ocean change-A
review
P. W. Boyd, S. Collins, Samuel Dupont, K. Fabricius, J. P. Gattuso, Jonathan N. Havenhand, D. A. Hutchins, U. Riebesell, M. S. Rintoul, M. Vichi, H. Biswas, A. Ciotti, K. Gao, M. Gehlen, C. L. Hurd, H. Kurihara, C. M. McGraw, J. M. Navarro, G. E. Nilsson, U. Passow, H. O. Portner
Global Change Biology - 2018 -
Influence of bacteria on shell dissolution in dead gastropod larvae and adult Limacina helicina pteropods under ocean acidification
conditions
A. R. Bausch, M. A. Gallego, J. Harianto, P. Thibodeau, N. Bednarsek, Jonathan N. Havenhand, T. Klinger
Marine Biology - 2018 -
Oceanographic barriers to gene flow promote genetic subdivision of the tunicate Ciona intestinalis in a North Sea
archipelago
Kerstin Johannesson, Anna-Karin Ring, Klara B. Johannesson, Elin Renborg, Per R. Jonsson, Jonathan N. Havenhand
Marine Biology - 2018 -
Long-term exposure to acidification disrupts reproduction in a marine
invertebrate
Christian Pansch, Giannina Hattich, Mara E. Heinrichs, Andreas Pansch, Zuzanna Zagrodzka, Jonathan N. Havenhand
PLoS ONE - 2018 -
Climate change and the threat of novel marine predators in
Antarctica
K. Smith, RB. Aronson , BV. Steffel , MO. Amsler , S. Thatje , H. Singh , J. Anderson , CJ. Brothers , A. Brown , DS. Ellis , Jonathan N. Havenhand, WR James , Per-Olav Moksnes, AW. Raandolh , R. Sayre-McCord , JB. McClintock
Ecosphere - 2017 -
Immigrant reproductive dysfunction facilitates ecological
speciation.
Ola Svensson, Johanna Gräns, Malin C. Celander, Jonathan N. Havenhand, Erica H Leder, Kai Lindström, Sofie Schöld, Cock van Oosterhout, Charlotta Kvarnemo
Evolution - 2017 -
Analysis of aquaporins from the euryhaline barnacle Balanus improvisus reveals differential expression in response to changes in
salinity
Ulrika Lind, Michael Järvå, Magnus Alm Rosenblad, Piero Pingitore, Emil Karlsson, Anna Lisa Wrange, Emelie Kamdal, Kristina Sundell, Carl André, Per R. Jonsson, Jonathan N. Havenhand, Leif A Eriksson, Kristina Hedfalk, Anders Blomberg
PLoS ONE - 2017 -
Low sensitivity of reproductive life-stages in the Pacific oyster (Crassostrea gigas) to
abamectin
L. J. Falkenberg, Anna-Lisa Wrange, Alexandra Kinnby, Jonathan N. Havenhand, A. Lockyer, C. A. Styan
Chemosphere - 2017 -
Cost-effectiveness of yoga for managing musculoskeletal conditions in the
workplace
N. Hartfiel, G. Clarke, Jonathan N. Havenhand, C. Phillips, R. T. Edwards
Occupational Medicine - 2017 -
Simulated diurnal pH fluctuations radically increase variance in— but not the mean of—growth in the barnacle Balanus
improvisus
Louise Eriander, Anna-Lisa Wrange, Jonathan N. Havenhand
ICES Journal of Marine Science - 2016 -
The Story of a Hitchhiker: Population Genetic Patterns in the Invasive Barnacle Balanus (Amphibalanus) improvisus Darwin
1854
Anna-Lisa Wrange, Grégory Charrier, A. Thonig, Magnus Alm Rosenblad, Anders Blomberg, Jonathan N. Havenhand, Per R. Jonsson, Carl André
Plos One - 2016 -
Population and life-stage specific sensitivities to temperature and salinity stress in
barnacles
A. Nasrolahi, Jonathan N. Havenhand, Anna-Lisa Wrange, C. Pansch
Scientific Reports - 2016 -
Pathogenic marine microbes influence the effects of climate change on a commercially important tropical
bivalve
Lucy M. Turner, Christian Alsterberg, Andrew D. Turner, S. K. Girisha, Ashwin Rai, Jonathan N. Havenhand, M. N. Venugopal, Indrani Karunasagar, Anna Godhe
Scientific Reports - 2016 -
Variable Individual- and Population- Level Responses to Ocean
Acidification
Mikko Vihtakari, Jonathan N. Havenhand, Paul Renaud, Iris Hendriks
"Frontiers in Marine Science" - 2016 -
A phenological shift in the time of recruitment of the shipworm, Teredo navalis L., mirrors marine climate
change
Christin Appelqvist, Jonathan N. Havenhand
Ecology and Evolution - 2016 -
Ocean acidification has lethal and sub-lethal effects on larval development of yellowfin tuna, Thunnus
albacares
A. Y. Frommel, D. Margulies, J. B. Wexler, M. S. Stein, V. P. Scholey, J. E. Williamson, D. Bromhead, S. Nicol, Jonathan N. Havenhand
Journal of Experimental Marine Biology and Ecology - 2016 -
Sperm Accumulated Against Surface: A novel alternative bioassay for environmental
monitoring
L. J. Falkenberg, Jonathan N. Havenhand, C. A. Styan
Marine Environmental Research - 2016 -
Distribution and abundance of teredinid recruits along the Swedish coast - are shipworms invading the Baltic
Sea?
Christin Appelqvist, Jonathan N. Havenhand, Gunilla B. Toth
Journal of the Marine Biological Association of the United Kingdom - 2015 -
Community‐level effects of rapid experimental warming and consumer loss outweigh effects of rapid ocean
acidification
Johan Eklöf, Jonathan N. Havenhand, Christian Alsterberg, Lars Gamfeldt
Oikos - 2015 -
Climate Envelope Modeling and Dispersal Simulations Show Little Risk of Range Extension of the Shipworm, Teredo navalis (L.), in the Baltic
Sea
Christin Appelqvist, Zyad K Al-Hamdani, Per R. Jonsson, Jonathan N. Havenhand
PLOS ONE - 2015 -
Climate envelope modeling and dispersal simulations show little risk of range extension of the shipworm, Teredo navalis (L.), in the Baltic
Sea
Christin Appelqvist, Z. K. Al-Hamdani, Per R. Jonsson, Jonathan N. Havenhand
PLoS ONE - 2015 -
No barrier to emergence of bathyal king crabs on the Antarctic
shelf
Richard Aronson, KE Smith, SC Vos, JB McClintock, MO Amsler, Per-Olav Moksnes, DS Ellis, JW Kaeli, H Singh, John W Bailey, Jessica C Schiferi, Robert Woesik van, Michael A Martin, Brittan V Steffel, Michelle E Deal, Steven M Lazarus, Jonathan N. Havenhand, Rasmus Swalethorp, Sanne Kjellerup, S Thatje
Proceedings of the National Academy of Science of the United States of America - 2015 -
The potential impact of ocean acidification on eggs and larvae of the Yellowfin
Tuna.
D. Bromhead, V. Scholey, S. Nicol, D. Margulies, J. Wexler, M. Stein, S. Hoyle, C. Lennert-Cody, J. Williamson, Jonathan N. Havenhand, T. Ilyina, P. Lehodey
Deep-sea research. Part II, Topical studies in oceanography - 2015 -
Community-level effects of rapid experiment warming and consumer loss outweigh effects of rapid ocean
acidification.
Johan Eklöf, Jonathan N. Havenhand, Christian Alsterberg, Lars Gamfeldt
Oikos - 2015 -
Ocean acidification impacts on sperm mitochondrial membrane potential bring sperm swimming behaviour near its tipping
point
P. Schlegel, M. T. Binet, Jonathan N. Havenhand, C. J. Doyle, J. E. Williamson
Journal of Experimental Biology - 2015 -
Importance of plasticity and local adaptation for coping with changing salinity in coastal areas: a test case with barnacles in the Baltic
Sea
Anna-Lisa Wrange, Carl André, Torbjörn Lundh, Ulrika Lind, Anders Blomberg, Per R. Jonsson, Jonathan N. Havenhand
BMC Evolutionary Biology - 2014 -
Habitat traits and food availability determine the response of marine invertebrates to ocean
acidification
Christian Pansch, I. Schaub, Jonathan N. Havenhand, M. Wahl
Global Change Biology - 2014 -
Interactive effects of ocean acidificaiton, elevated temperature, and reduced salinity on early-life stages of the Pacific
oyster
W.K.K.G. Ko, R. Dineshram, V. Chan, C. Campanati, Jonathan N. Havenhand, V. Thiyagarajan
Environmental Science and Technology - 2014
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