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Figure 5 | BMC Ecology

Figure 5

From: Fine-scale spatiotemporal influences of salmon on growth and nitrogen signatures of Sitka spruce tree rings

Figure 5

Yearly trends in radial tree ring growth, nitrogen signatures, salmon abundance, atmospheric temperature and precipitation at Bag Harbour, Haida Gwaii. ( Panel A) Mean annual tree growth index, averaged for 36 tree ring series with dashed lines indicating standard error ( Panel B) mean annual δ15N isotopic values for a subset of tree rings (dbh-adjusted) with dashed lines indicating standard error, ( Panel C) mean annual percent nitrogen (%) with dashed lines representing standard error, ( Panel D) annual salmon abundance (3 year running average, lagged 1 year) at Bag Harbour, Haida Gwaii, ( Panel E) mean maximum monthly temperature (°C) and (F) total precipitation (mm) from local weather stations (Sandspit, Masset and Tlell, Haida Gwaii) for the biological year (1948-2000). The vertical dashed line in 5C indicates data that was not included in a second δ15N GLMM run using a subset of temporal data (1948-1989).

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BMC Ecology

ISSN: 1472-6785

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