Eurasian otter (Lutra lutra) occurrence in Morocco. We collected data on otter presences and absences in 270 sites distributed across 34 Moroccan river basins, visited between April 2011 and April 2013. Data collected were used to study the natural and anthropogenic factors associated with otter occurrence in Morocco. More information in: Calzada, J., Clavero, M., Delibes, M., and Fernández, N. Human pressures constrain Eurasian otter occurrence in semiarid Northern Africa. Biodivers Conserv (2022). https://doi.org/10.1007/s10531-022-02405-w
The data in this sampling event resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 270 records.
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How to cite
Researchers should cite this work as follows:
Calzada J, Clavero M, Delibes M, Fernández N (2022): Eurasian otter (Lutra lutra) occurrence in Morocco. v1.1. Universidad de Huelva. Dataset/Samplingevent. https://doi.org/10.15470/xyzeiv
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The publisher and rights holder of this work is Universidad de Huelva. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.
This resource has been registered with GBIF, and assigned the following GBIF UUID: f1cf65f2-b028-48cc-bc5d-d9baf96da827. Universidad de Huelva publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Spain.
Samplingevent; Morocco; Population conservation; Lutra lutra; Peripheral populations; Arid rivers
- Metadata Provider ●
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Morocco, North Africa
|Bounding Coordinates||South West [27.216, -12.393], North East [36.102, -0.088]|
No Description available
|Species||Lutra lutra (Eurasian otter)|
|Start Date / End Date||2011-04-01 / 2013-04-30|
The survey sites were selected a priori with the goal of covering as much of the country’s river network as feasible and being at least 30 km apart to uniformly surveying the whole region.
|Study Extent||We collected data on otter presences and absences in 270 sites distributed across 34 Moroccan river basins, visited between April 2011 and April 2013.|
Method step description:
- We applied the standard otter survey method, which consists in sampling up to 600 m along the river shore searching for otter signs (spraints, anal scent gland secretions and tracks). River shores were inspected by at least two experienced surveyors in each survey. A site was coded as positive, and the survey was finished, as soon as an otter sign was found, while it was considered negative when the 600 m-long transect was completed without finding any sign.
- Calzada, J., Clavero, M., Delibes, M., and Fernández, N. Human pressures constrain Eurasian otter occurrence in semiarid Northern Africa. Biodivers Conserv (2022). https://doi.org/10.1007/s10531-022-02405-w https://doi.org/10.1007/s10531-022-02405-w