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Using abiotic drivers of fish spawning to inform environmental flow management [Journal of Applied Ecology]

Keywords : antecedent conditions, common carp, controlled flood, environmental water, golden perch, hierarchical multi-species modeling, imperfect detection, Murray cod, Murray River, trout cod

par Frédéric Magné - publié le

1.Environmental flows are a key restoration technique for conserving ecological function in flow-degraded rivers. Species-specific, flow-biotic relationships are increasingly being used to determine environmental flow needs and manage their use ; however, many of these relationships are poorly described.
2.We evaluate relationships between environmental variables and spawning intensity for a fish assemblage from the Murray River, Australia over a ten year period. We developed a hierarchical multi-species model that accounted for incomplete detection to compare spawning outcomes of native and non-native species using realistic alternative water management scenarios.(...)

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