0000000001025701
AUTHOR
Anthony Olivier
showing 3 related works from this author
Epizoic Algae Distribution on the Carapace and Plastron of the European Pond Turtle (Emys orbicularis, Linnaeus, 1758): A Study from the Camargue, Fr…
2016
12 pages; International audience; We investigated epizoic algal assemblages on the shell of European pond turtles (Emys orbicularis) during two years (2013–2014). A total of 60 Emys orbicularis were captured in the three shallow Mediterranean wetlands located in Camargue. Epizoic algae on the plastron (below the shell) and carapace (above the shell) were sampled, identified and counted. Seventy-seven epizoic algal species were identified on the carapace and plastron and comprised in 51 Bacillariophyta, 11 Chlorophyta, 7 Cyanophyta, 6 Euglenophyta, 1 Dinophyta and1Xanthophyta taxa. Our findings indicated a distinct distribution of epizoic algae according to taxonomical group density; Chlorop…
Rapid response of a long-lived species to improved water and grazing management: the case of the European pond turtle (Emys orbicularis) in the Camar…
2014
7 pages; International audience; Among human activities, the effect of habitat management by grazing on population viability is ambiguous. Indeed, beneficial effects of grazing are expected by maintaining open meadows, but overgrazing is supposed to increase mortality by trampling. Grazing has been shown to negatively impact the survival of European pond turtle (Emys orbicularis) in the Camargue. Consequently, a new management plan was defined. We investigated the consequences of this management using capture-recapture methods to estimate variations of population sizes in this managed site and a control site over a 17 years period. Results show an increase of the number of adults and juveni…
Conservation status of the Hispaniolan Slider, Trachemys decorata, at Lake Trou Caïman, eastern Haiti: first data on an endemic, poorly studied, and …
2022
Hispaniolan Slider (Trachemys decorata) is a freshwater turtle of conservation interest, endemic to the island of Hispaniola. Although the species is known to be threatened with habitat destruction, hybridization with congeneric species, and commercial harvesting, little information is available on natural populations. Here we report the results of a pilot study conducted at Lake Trou Caiman, Haiti. From October 2017 to February 2018, we captured 44 individuals (mostly in areas dominated by cattails, Typhaceae) and had access to 48 additional individuals held in captivity by fishers and local people. Captive individuals were significantly larger than wildcaught ones. Based on individuals wi…