Population size and density in two European pond turtle populations of central Italy

2020 ◽  
Vol 41 (4) ◽  
pp. 461-467
Author(s):  
Marco A.L. Zuffi ◽  
Alice Spinelli ◽  
Vuk Ikovic ◽  
Marco Mangiacotti ◽  
Roberto Sacchi ◽  
...  
Keyword(s):  
Sexual Size Dimorphism ◽  
Central Italy ◽  
Reproductive Rate ◽  
Population Estimates ◽  
Protection Measures ◽  
Emys Orbicularis ◽  
Pond Turtle ◽  
Natural Park ◽  
Two Populations ◽  
North Western

Abstract Two populations of the European pond turtle were studied employing capture, marking and recapture (CMR) techniques to determine population density and abundance in natural and protected areas within the Regional Natural park Migliarino San Rossore Massaciuccoli in north western Tuscany, Italy. The results indicated strong sexual size dimorphism in both populations, with males smaller than females. In one area Emys orbicularis was in general smaller in size with a very low reproductive rate (three out of 25 adult females were gravid), which contrasted with a second population where 20 out of 42 females were gravid. Population estimates indicated 79 turtles were present in the first area (0.34 ha) and 61 turtles in the second area (0.58 ha), giving an overall density estimate of 183.6 turtles/ha and 146.7 turtles/ha respectively. Whilst our results are similar to those found in other areas of Europe, they diverge from other regions, suggesting that sampling and monitoring techniques should be standardized to obtain comparable data that will enable conservation and protection measures to be recommended.

Attributes of basking sites of the European pond turtle (Emys orbicularis) in central Italy

2015 ◽  
Vol 36 (2) ◽  
pp. 125-131 ◽  
Author(s):  
Leonardo Vignoli ◽  
Marco A. Bologna ◽  
Silvia Manzini ◽  
Lorenzo Rugiero ◽  
Luca Luiselli
Keyword(s):  
Aquatic Vegetation ◽  
Central Italy ◽  
Freshwater Turtles ◽  
Management Planning ◽  
Emys Orbicularis ◽  
Turtle Species ◽  
Pond Turtle ◽  
Target Spot ◽  
Site Characteristics ◽  
Management Plans

Attributes of basking sites are important elements to study in management plans of threatened freshwater turtles. Here, we analyzed the basking-site characteristics of European pond turtle (Emys orbicularis) populations in a Mediterranean territory of central Italy (Tolfa Mountains, Latium). We used logistic regression and Principal Components Analysis to characterize 29 presence sites versus 61 random sites, through 16 descriptive variables recorded within a 5 m radius from the sighting/target spot. Our analyses revealed that some variables (i.e. water turbidity, presence of small coves, submerged vegetation, and emergent tree-trunks) were those that influenced most strongly the presence of turtles on potential basking sites. Maintenance of deadwood in water and preservation of submerged aquatic vegetation should be included in the management planning for this turtle species in central Italy.

Hybridisation between turtle subspecies: a case study with the European pond turtle (Emys orbicularis)

2016 ◽  
Vol 18 (2) ◽  
pp. 287-296 ◽  
Author(s):  
Matthieu Raemy ◽  
Uwe Fritz ◽  
Marc Cheylan ◽  
Sylvain Ursenbacher
Keyword(s):  
Emys Orbicularis ◽  
Pond Turtle

Basking Site Selection and Usage Strategies of the European Pond Turtle, Emys orbicularis (Linnaeus, 1758) in Babat valley (Gödöllő, Hungary)

2021 ◽  
Vol 28 (4) ◽  
pp. 175-184
Author(s):  
Gergő Erdélyi ◽  
Borbála Szabó ◽  
István Kiss
Keyword(s):  
Site Selection ◽  
Habitat Characteristics ◽  
Freshwater Turtles ◽  
Emys Orbicularis ◽  
Pond Turtle ◽  
Site Type ◽  
Type Selection ◽  
Body Sizes ◽  
Negative Effect ◽  
Selection Of

Sun basking is the most common method for freshwater turtles, such as the European pond turtle, to maintain optimal body temperature. The attributes of the macro- and microhabitat features around the basking sites affect the basking site selection of the European pond turtle. To protect the European pond turtle, it is important to know the basking habits among the biological characteristics of the species, along with the effects of the habitat characteristics and the choice of the type of basking sites. The purpose of our research was to detect the effects of macro- and microhabitat features on the selection of basking sites. We wanted to determine basking site type selection according to the carapace length classes and if there is any difference in the choice of basking trunks and branches with different thicknesses. Turtles choose basking sites with less closed vegetation in their environment. We have detected seasonal differences in the microhabitat features. The closing reed and Typha sp. had a negative effect on the number of observed basking turtles. The most popular type of basking sites in the pond system was the commonly occurred fallen tree trunks and branches in the water, regardless of turtle body size. Most turtles used thinner tree trunks and branches for basking. In the meantime, we found differences in the choice of basking trunks between the turtles with different body sizes. Younger turtles with smaller bodies appeared in larger numbers on emergent branches with smaller diameters.

Unexpected early extinction of the European pond turtle (Emys orbicularis) in Sweden and climatic impact on its Holocene range

2009 ◽  
Vol 18 (6) ◽  
pp. 1252-1262 ◽  
Author(s):  
ROBERT S. SOMMER ◽  
CHARLOTTE LINDQVIST ◽  
ARNE PERSSON ◽  
HENRIK BRINGSØE ◽  
ANDERS G. J. RHODIN ◽  
...  
Keyword(s):  
Climatic Impact ◽  
Emys Orbicularis ◽  
Pond Turtle

scholarly journals RANGE EXTENSION OF Sibon ayerbeorum VERA-PÉREZ, 2019 (SERPENTES: DIPSADIDAE) IN COLOMBIA

2021 ◽  
Vol 4 (1) ◽  
pp. 221
Author(s):  
Jonard David Echevarría Rentería ◽  
Guido Medina-Rangel
Keyword(s):  
New Record ◽  
Distribution Range ◽  
Range Extension ◽  
Type Locality ◽  
Natural Park ◽  
Distributional Range ◽  
Straight Line ◽  
North Western

Ayerbe’s snail-eater Sibon ayerbeorum is a nocturnal, tree-dwelling snake which was recently described based on four specimens collected in the proximity of Munchique National Natural Park, department of Cauca, Colombia, above 1000 m altitude. We here expand the distribution range of S. ayerbeorum into the department of Chocó, Colombia. The new record extends the distributional range of the Ayerbe’s snail-eater by nearly 288 km in a straight-line north-western ward from its type locality and is more than 1000 m below it.

Holocene recolonization and extinction of the pond turtle, Emys orbicularis (L., 1758), in Europe

2007 ◽  
Vol 26 (25-28) ◽  
pp. 3099-3107 ◽  
Author(s):  
Robert S. Sommer ◽  
Arne Persson ◽  
Nina Wieseke ◽  
Uwe Fritz
Keyword(s):  
Emys Orbicularis ◽  
Pond Turtle
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