Potential and limitation of combining terrestrial and marine growth records from Iceland

0521219 - ÚVGZ 2020 RIV NL eng J - Journal Article
Piermattei, A. - Urbinati, C. - Tonelli, E. - Eggertsson, O. - Levanič, T. - Kaczka, R. J. - Andrew, C. - Schoene, B. R. - Büntgen, Ulf
Potential and limitation of combining terrestrial and marine growth records from Iceland.
Global and Planetary Change. Roč. 155, AUG 2017 (2017), s. 213-224. ISSN 0921-8181. E-ISSN 1872-6364
Institutional support: RVO:86652079
Keywords : north-atlantic oscillation * quahog arctica-islandica * lived bivalve mollusk * climate variability * last millennium * shell growth * past millennium * tree-rings * ocean * sea * Annual growth increments * Arctica islandica * Betula pubescens * Multi-proxy approach * North Atlantic * Sorbus aucuparia
OECD category: Physical geography
Impact factor: 3.982, year: 2017
Method of publishing: Open access with time embargo
https://www.sciencedirect.com/science/article/pii/S0921818117301510?via%3Dihub

Seasonally formed, perennial growth increments of various organisms may possibly contain information about past environmental changes, well before instrumental measurements occurred. Such annually resolved proxy records have been mainly obtained from terrestrial archives, with a paucity of similar data originating from marine habitats. Iceland represents ideal conditions to develop both, tree ring (dendro) and bivalve shell (sclero) chronologies from adjacent sites. Here we introduce the first network of Icelandic birch (Betuk pubescens Ehrh.) and rowan (Sorbus aucuparia) dendrochronologies, as well as ocean quahog (Arctica islandica L.) sclerochronologies. In order to identify the dominant external drivers of tree and shell growth, we assess the common growth trends and growth extremes within and between the terrestrial and marine records, as well as relationships of both archives with instrumental-based meteorological indices. Capturing a strong signal of June August mean air temperature, the dendrochronologies are significantly positively correlated to each other. The sclerochronologies, however, reveal much lower growth coherency, which likely results from different sampling strategies and growth habitats. Disagreement between the dendro- and sclerochronologies possibly originates from unequal sample size, offset in the seasonal timing and rate of the growth, as well as varying sensitivities to different environmental factors. Our results emphasize the importance of considering a wide range of species and taxa to reconstruct a more complete picture of terrestrial and marine ecosystem functioning and productivity across various spatiotemporal scales.
Permanent Link: http://hdl.handle.net/11104/0305852