Quantification of land–sea nutrient fluxes supplied by allis shad across the species’ range

Diadromous species act as nutrient vectors between their marine and freshwater habitats. Few valuations of this regulating service exist none at the scale distribution ranges. This large-scale approach seems particularly relevant for moving exchanging individuals across borders territories these populations may strongly depend upon each other in terms population viability provision ecosystem services. The development a new routine within an existing mechanistic model provided estimates “maximum potential” anadromous allis shad (Alosa alosa) to provide nitrogen phosphorous subsidies throughout western Europe. During seasonal reproductive migration, low amounts when compared North American annual riverine loads. However, are delivered pulses concentrated space time, suggesting that more work is needed figure out significance shad-derived nutrients functioning. evidence substantial flow strayers delivering several rivers confirmed need management migratory ensure sustainable