Karolina ZarzycznyUniversity of Southampton · National Oceanography Centre Southampton (NOCS)
Karolina Zarzyczny
MBiol (Hons) Zoology with a Year in Industry
About
11
Publications
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Introduction
I'm a Postgraduate Research Student at the National Oceanography Centre and Natural History Museum. My research is focused the evolutionary and ecological consequences of tropicalisation across marine environments.
My masters research at the University of Leeds was focused on quantifying herbivory pressure across tropical and subtropical reefs of Japan, in relation to tropicalisation. My other research interests range from environmental sustainability to palaeoecology and palaeobiology.
Publications
Publications (11)
Mass extinctions are considered to be quintessential examples of Court Jester drivers of macroevolution, whereby abiotic pressures drive a suite of extinctions leading to huge ecosystem changes across geological timescales. Most research on mass extinctions ignores species interactions and community structure, limiting inference about which and why...
Tropicalisation is a marine phenomenon arising from contemporary climate change, and is characterised by the range expansion of tropical/subtropical species and the retraction of temperate species. Tropicalisation occurs globally and can be detected in both tropical/temperate transition zones and temperate regions. The ecological consequences of tr...
Aim
The poleward range expansion of tropical species, and range contraction of temperate species (known as tropicalisation) has mainly been studied from an ecological perspective, with little research on its genetic consequences. Here, we used distributional and genetic data to document the consequences of tropicalisation in rocky shore gastropods...
Aim
The biogeography of predator‐induced defences is an understudied area of predator–prey dynamics. Range overlap with predators that induce the response and local demographics (e.g., prey abundances) are likely to be important factors for determining the biogeographic distribution of induced defences within species. However, with climate warming,...
The shell morphology of limpets can be cryptic and highly variable, within and between species. Therefore, the visual identification of species can be troublesome even for experts. Here, we demonstrate the capability of computer vision models as a new method to assist with identifications. We investigate the ability of computers to distinguish betw...
Biotic interactions and community structure are seldom examined in mass extinction studies but must be considered if we are to truly understand extinction and recovery dynamics at the ecosystem scale. Here, we model shallow marine food web structure across the Toarcian extinction event in the Cleveland Basin, UK using a trait-based inferential mode...
Tropicalization is rapidly restructuring subtropical marine communities. A key driver for tropicalization is changes in herbivory pressure that are linked with degrading ecosystem stability. Consequently, subtropical algal beds are being displaced by climate-mediated colonisation of coral communities. This process is thought to be aided by the elev...
This poster is depicting the results of the research project on "Reconstructing Trophic Networks Across the Toarcian Ocean Anoxic Event" which was funded by the Palaeontological Association.
The full report can be found in the Palaeontological Association Newsletter 97, pp. 86-89.
https://www.palass.org/sites/default/files/media/publications/newsl...
Questions
Questions (2)
Hi,
I'm trying to display distribution of haplotypes of a population. I have already created haplotype networks with the pie charts coloured by site (i.e. a basic haplotype network).
I wanted to show the proportion of each haplotype (i.e. haplotype frequency) on each site. However, in PopArt, the mapview shows me the piecharts which are coloured by each individual sample (rather than haplotype). Any advice on how to group those together?
Example: This is what I currently have (only a snapshot of some of the data)
Now for example, imagine for site 1-2, samples 1-2 an are the same haplotype. I would like them to be represented by the same colour. Then then for example Site 1, sample 3 is a different haplotype (represented by a 2nd colour), and then Site 3, sample 3 is another haplotype (represented by 3rd colours).
Any advice would be appreciated! Thanks!
Hi all,
I'm using (or trying to use) Arlequin on Windows to run an AMOVA on some haplotypic data (mitochondrial genetic marker). I'm pretty certain the data is set up correctly - it reads in correctly and the groups are assigned correctly too. When I go to the "Settings Tab" and select the AMOVA analysis, I press start - nothing happens. No console pops up to make it seem like something happened, and no file is generated in the working directory.
I set up the file using the tutorial from the Banta Lab (https://sites.google.com/site/thebantalab/tutorials#h.c6sq8o45ens6) , I then followed the AMOVA set up (difference is I have haplotypic rather than genotypic data). When I noticed that nothing happens when I pressed start, I tried using the sample data from the tutorial but I am facing the same issue.
Has anyone had this problem before?
Thanks!
