This blog tracks the scientific activity of the Animal Demography and Ecology Unit of the IMEDEA (CSIC-UIB). Contents on animal demography, capture-recapture, APHIS, upcoming workshop, publications
Showing posts with label news. Show all posts
Showing posts with label news. Show all posts
Monday, 19 August 2024
Wednesday, 8 March 2023
Monk seal on the News!
The Monk Seal hit the news! An interview about the findings from the study by Valsecchi et al. on the local News (here).
Friday, 26 June 2020
Storm Petrels on the news !
The work by A Sanz-Aguilar and A. Rotger on the first tracks of Storm Petrels breeding in the Balearic Archipelago hit the news! here
Monday, 13 January 2020
New press release on Griffon vulture arrival!
Natural colonizations of islands are rare and offer an important opportunity to gain information on dispersal, settlement and competition among species.
Will it compete with the Black vulture ?
Will framers change their perception on scavangers ?
Will this natural arrival create a new wildlife-human conflict?
Stay in touch for the answers.
Monday, 14 October 2019
Ticks on the news!
Wednesday, 30 January 2019
GEDA on the news!
Here a press release by E. Soto on the use of APHIS to identify individuals from digital image. Photo-identification techniques are becoming more and
more popular in monitoring individual behaviour and life-history
tactics. They allow an economic and not invasive method of indiviudal
recongnition, particularly useful to study small species or for those
that cannot be marked without potentially harm individuals or change
their behaviour. The software, APHIS developped by the GEDA and the "Fundación Bit" in 2015 (here), is freely available (here) and it is increasingly being used in may taxa such as invertebrates, mammals, fish, reptiles and amphibians.
Wednesday, 7 March 2018
New research into the Mallorcan Midwife Toad
The work by S. Pinya, in collaboration with the GEDA, is under the spotlight. A new press release by E. Soto appeared yesterday on the Spanish news (here). The work describing the first population model for the species (only one population, helas!) can be found here.
ABSTRACT: Amphibian populations are declining worldwide, but for many taxa, robust estimates of demographic parameters to assess population state or trends are scarce or absent. We provide robust estimates of adult apparent survival of the endemic Mallorcan midwife toad Alytes muletensis using individual capture-recapture data collected over 4 yr in a 60 m2 cistern. Moreover, we combined the vital rates into a stage-structured population model to estimate the expected long-term growth rate of the population. Apparent survival estimates of males and females were similar (0.737 ± 0.042 and 0.726 ± 0.045, respectively) indicating that the egg-carrying behavior of males, typical of this species, does not reduce its survival probability. We found evidence of a low local survival of juveniles compared with adults, most likely due to permanent dispersal. Adult population size estimation provided higher tadpole:adult ratios than previously reported for this endangered species, suggesting an overestimation of the previous adult population size. Model projections suggested a stable population, since λ, the expected asymptotic growth rate of the population, was close to 1.00.
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Photo: Samuel Pinya |
ABSTRACT: Amphibian populations are declining worldwide, but for many taxa, robust estimates of demographic parameters to assess population state or trends are scarce or absent. We provide robust estimates of adult apparent survival of the endemic Mallorcan midwife toad Alytes muletensis using individual capture-recapture data collected over 4 yr in a 60 m2 cistern. Moreover, we combined the vital rates into a stage-structured population model to estimate the expected long-term growth rate of the population. Apparent survival estimates of males and females were similar (0.737 ± 0.042 and 0.726 ± 0.045, respectively) indicating that the egg-carrying behavior of males, typical of this species, does not reduce its survival probability. We found evidence of a low local survival of juveniles compared with adults, most likely due to permanent dispersal. Adult population size estimation provided higher tadpole:adult ratios than previously reported for this endangered species, suggesting an overestimation of the previous adult population size. Model projections suggested a stable population, since λ, the expected asymptotic growth rate of the population, was close to 1.00.
Monday, 19 February 2018
APHIS under the spotlight !


You can see the interview here.
A press release from IMEDEA here
The software can be downloaded for free here.
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GEDA at the XXII CIO Conference!
S Bolumar and A Santangeli are participating to the XXII Italian Ornithology Conference in Lecce

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Photo: P. Henry at IUCN The increasing sightings of the Monk Seal Monachus monachus in Italy and central Mediterranean indicate a possible i...
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Dr. A. Santangeli explains here why protected areas are insufficient to reduce the current biodiversity loss. They should be larger, better ...
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Arrondo, E., Moleón, M., Cortés-Avizanda, A., Jiménez, J., Beja, P., Sánchez-Zapata, J.A, Donázar, J.A. 2018. Invisible barriers: Different...