Different location sampling frequencies by satellite tags yield different estimates of migration performance: pooling data requires a common protocol.

摘要: BACKGROUND: Migration research is in rapid expansion and increasingly based on sophisticated satellite-tracking devices subject to constant technological refinement, but still ripe with descriptive studies need of meta-analyses looking for emergent generalisations. In particular, coexistence different frequency location sampling spatial accuracy generates doubts data compatibility, potentially preventing meta-analyses. We used a migratory raptor to: (1) test whether frequencies position subsampling approaches are compatible, (2) seek potential solutions that enhance compatibility enable eventual METHODOLOGY/PRINCIPAL FINDINGS: linear mixed models analyse the differences speed route length migration tracks 36 Black kites (Milvus migrans) satellite-tagged two types (Argos vs GPS tags), entailing regimes frequency. show generate large (up 33%) estimates this bird. CONCLUSIONS/SIGNIFICANCE: Our results abundance locations available analysis affects tortuosity realism estimated path. To avoid flaws future or unnecessary loss data, we urge researchers reach an agreement common protocol presentation, recognize all transmitter-based likely underestimate actual distance traveled by marked animal. As ecological becomes technological, new technologies should be matched improvements analytical capacity guarantee compatibility.