Background: The process of ecosystem development over time that takes place on a new substrate devoid of biological activity (such as, for example, lava) is called primary succession. Research on primary succession is not easy, as it is limited to rare occasions when a piece of land totally lacking in any pre-existing life occurs. The emergence of volcanic islands is such an occasion; it is a unique event that allows a natural experiment in the study of colonisation processes and primary succession. Surtsey (located in the Vestmannaeyar archipelago off the southern coast of Iceland) is an iconic example of a place where primary succession has been studied for decades and where human disturbance has been minimised due to significant geographic isolation and early protection efforts. Here, we present a georeferenced dataset of vacular plant occurrences collected during the field studies carried out on Surtsey Island during the first three decades of its existence.
New information: To date, no dataset containing plant distribution data documenting the process of early stages of colonisation of Surtsey has been published. What is more, to our knowledge, there is no other dataset that can be compared with our Surtsey data that is readily available for researchers working on plant colonisation dynamics and primary succession processes. Here, we present a complete, geo-referenced dataset of all plant occurrences (10,094 in total) collected on Surtsey between 1965 and 1990.
Keywords: Iceland; Northern Atlantic; Surtsey; colonisation; primary succession; volcanism.
Pawel Wasowicz, Sally Thorsteinsson, Borgþór Magnússon, Eyþór Einarsson, Valgeir Bjarnason, Ágúst H. Bjarnason, Jón Guðmundsson, Sigurður H Richter, Ragnar Jónasson, Bjartmar Sveinbjörnsson, Skúli Þ Magnússon.