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- W4237221750 abstract "The distribution and abundance of an animal is largely dependent on its habitat requirements and these requirements often change throughout its life-cycle. So to know the true impact of (a)biotic factors on a species distribution and abundance, the whole life cycle should be considered. This study aims to illustrate a fast and relatively simple approach to gain knowledge on the importance of certain habitat requirements in controlling species abundance and distribution, by comparing habitat requirements of a species’ life stages with the (a)biotic values found in nature. This is illustrated through a detailed case study of the sea urchin species, Psammechinus miliaris. Nine biotic and abiotic factors were studied, namely diet, food quantity, hydrodynamics, oxygen, hydrostatic pressure, salinity, bottom type / substrate, pH and temperature. For each of these abiotic and biotic factors, the minimum, maximum and average values were determined in the Grevelingen, North Sea and Eastern Scheldt through a literature study. The minimum and maximum habitat requirements for every abiotic and biotic factor where then determined through a literature study for each of the six P. miliaris life stages: gametes, embryo, larvae, metamorphosis, juveniles and adults. The literature search was extended by comparing data of P. miliaris observations and water temperatures in the Eastern Scheldt and Grevelingen Lake to explore the relationship between the yearly differences in water temperature and P. miliaris abundance over a 22 year period. The results show that hydrodynamics, temperature and bottom type are important limiting factors for P. miliaris, whilst hydrostatic pressure and salinity are of little to no importance. This study shows that there is a lack of research towards hydrodynamics and bottom type and it provides evidence that seawater temperatures below 1 ◦C negatively affect P. miliaris populations. This case study illustrates a relatively easy way to get a broad understanding of the habitat requirements of an organism, to identify knowledge gaps in the research area and to prioritise further research efforts." @default.
- W4237221750 created "2022-05-12" @default.
- W4237221750 creator A5000112435 @default.
- W4237221750 date "2018-04-16" @default.
- W4237221750 modified "2023-09-26" @default.
- W4237221750 title "A complete life cycle perspective on habitat requirements that control species distribution; a case study of Psammechinus miliaris in the Eastern Scheldt, Grevelingen and North Sea" @default.
- W4237221750 doi "https://doi.org/10.31230/osf.io/adg7j" @default.
- W4237221750 hasPublicationYear "2018" @default.
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