Biodiversité

Van Klink et al. (Reports, 24 April 2020, p. 417) argue for a more nuanced view of insect decline, and of human responsibility for this decline, than previously suggested. However, shortcomings in data selection and methodology raise questions about their conclusions on trends and drivers. We call for more rigorous methodology to be applied in meta-analyses of ecological data.

By Marion Desquilbet, Laurence Gaume, M. Grippa, Régis Céréghino, JF Humbert, JM Bonmatin, PACornillon, Dirk Maes, Hans Van Dyck, David Goulson Science18 Dec 2020

Conservation translocations are an important tool in wildlife management, but monitoring of translocations has traditionally suffered from a lack of techniques for effective post‐release monitoring. Increasing understanding of post‐release movements is vital in improving the success of translocations, but few methods exist to efficiently monitor highly mobile and cryptic species post‐release.

We present a novel approach to using dynamic occupancy modelling in combination with data derived from autonomous acoustic recording units to monitor the post‐release behaviour of hihi (Notiomystis cincta), a threatened endemic bird, at a translocation site in New Zealand.

Des scientifiques, aidés par Greenpeace, ont équipé dix tortues luth de balise Argos pour suivre leurs migrations. De la Guyane, où elles pondent, jusqu’à leurs zones d’alimentation.