University of Essex

Research data at Essex (University of Essex)
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    70 research outputs found

    Barriers to effective compulsory waste sorting for a circular economy in China.

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    Qualitative and Quantitative data relating to British Academy award ref SRG21\211282

    Oil and gas platforms degrade benthic invertebrate diversity and food web structure

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    Data and R code from an multiple before after control impact (MBACI) experiment conducted across a total of nine oil and gas platforms using the UK Benthos database v5.17. The dataset provides a comprehensive inventory of species identified in the database. Each taxon was verified against World Register of Marine Species, with their corresponding accepted names, taxonomy classification, feeding group, known prey and references provided. The compilation of food web interaction, the construction of sub food web at each sampling site and the calculation of food web metrics are shown in the R code. This dataset provides all the information from the experiment underpinning the Chen et al. Science of the Total Environment paper "Oil and gas platform degrade benthic invertebrate diversity and food web structure"

    Bleaching threatens positive carbonate budgets on Bahraini reefs

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    Carbonate budget data sets for Bahrai

    What Makes a Habitat a Home: Understanding Settlement and Recruitment Variation in European Sea Bass, Dicentrarchus labrax

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    Data collected and used for the completion of a PhD in Marine Biology. Chapter 2 contains data on count, length, weight, and condition of juvenile sea bass in different estuarine habitats, chapter 3 contains data on stomach fullness and dietary differences between habitats using dDNA metabarcoding, Chapter 4 contains data on density and length of larval sea bass over different depths on flood and ebb tides, and chapter 5 contains data on winter temperatures for multiple Essex habitats, as well as the Bay of Biscay (France) and the Tagus (Portugal), and also data on juvenile sea bass temperature dependent growth rates

    Fish exclusion experiment from Hengill, Iceland

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    Data and R code from an exclusion experiment conducted across six streams of different temperature in the Hengill geothermal valley in Iceland. Fences were constructed at three points in each stream and all fish (brown trout) were removed, with no fish added to the upper reach and a set density of fish (7 individuals of similar size) added to the lower reach. The experiment ran for five weeks in August-September 2012. Sampling was conducted before and after the experiment to characterise chlorophyll, decomposition, diatom and invertebrate biomass, and food properties. A bioenergetic model was also used to determine the key mechanisms driving the patterns. This dataset provides all the information from the experiment underpinning the O'Gorman et al. Naature Ecology & Evolution paper "Warming indirectly simplifies food webs through effects on apex predators"

    Experimental estimation of ladder dredge efficiency for capture of European flat oysters over mixed sediment

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    Data on landings from dredges using a commercial ladder dredge of experimental oyster bed densities over a variety of ground types. See associated paper in Aquatic Living Resources with same title Cameron, Lown, Smart, Baker and Kord

    Variations of GIT quotients for complete intersections package

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    This software package is a complement to the article "K-moduli for log Fano complete intersections". The software package implements a series of algorithms for the study of variations of Geometric Invariant Theory (VGIT) quotients of pairs formed by a complete intersection of k hypersurface in projective space of dimension n-1 and degree d and a hyperplane embedded in the same projective space. Given n, degree d, and number of hypersurfaces k, the code finds all relevant one-parameter subgroups which determine all the GIT quotients for these pairs. In addition, it finds a finite list of candidate 'walls' in the wall-chamber decomposition studied by Dolgachev-Hu and Thaddeus. Furthermore, for each prospective chamber and wall it finds all maximal orbits of non stable and strictly semistable pairs, as well as minimal closed orbits of strictly semistable pairs in terms of families of pairs defined by monomials with non-zero coefficients. Finally, it runs through all the list of prospective chambers and walls eliminating 'false walls' for which the GIT quotient is detected not to vary. It outputs the maximal orbits of non stable and strictly semistable pairs in each wall/chamber as a list of polynomials defined by monomials with non-zero coefficients, in a txt output file. Further details can be found at the article "K-moduli for log Fano complete intersections". The sotware package is implemented as a Sage 9.2 package. The program can be run directly from the Sage Shell (Windows) or from the terminal (Mac and Linux). The run file is completeintersections.sage. The user inserts the dimension n, degree d and number of hypersurfaces k they want for the VGIT quotient. The user can also indicate if they want to study GIT problems with or without the hyperplane section, as well as GIT problems for specific walls/chambers

    Segre Symbols Calculator package

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    This software package is a complement to the article "K-moduli for log Fano complete intersections". The software package implements a series of algorithms for the study of pencils of quadrics in different dimensions. Given two symmetric nxn matrices A and B the package computes the Segre symbol of the pencil given by the two corresponding quadratic polynomials x^TAx and x^TBx. The user inputs the two matrices and the dimension n, and receives the Segre symbol of the pencil

    Metabolic plasticity can amplify ecosystem responses to global warming

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    Metabolic rate data for freshwater invertebrates sampled in the Hengill geothermal valley Iceland in the summers of 2015-2018. Includes body mass, acute temperature exposures, and chronic temperature exposures

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    Research data at Essex (University of Essex)
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