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Low tortoise abundances in pine forest plantations in forest-shrubland transition areas

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Low tortoise abundances in pine forest plantations in forest-shrubland transition areas. / Rodríguez-Caro, Roberto C.; Oedekoven, Cornelia S.; Graciá, Eva; Anadón, José D.; Buckland, Stephen T.; Esteve-Selma, Miguel A.; Martinez, Julia; Giménez, Andrés.

In: PLoS One, Vol. 12, No. 3, e0173485, 08.03.2017.

Research output: Contribution to journalArticle

Harvard

Rodríguez-Caro, RC, Oedekoven, CS, Graciá, E, Anadón, JD, Buckland, ST, Esteve-Selma, MA, Martinez, J & Giménez, A 2017, 'Low tortoise abundances in pine forest plantations in forest-shrubland transition areas' PLoS One, vol. 12, no. 3, e0173485. https://doi.org/10.1371/journal.pone.0173485

APA

Rodríguez-Caro, R. C., Oedekoven, C. S., Graciá, E., Anadón, J. D., Buckland, S. T., Esteve-Selma, M. A., ... Giménez, A. (2017). Low tortoise abundances in pine forest plantations in forest-shrubland transition areas. PLoS One, 12(3), [e0173485]. https://doi.org/10.1371/journal.pone.0173485

Vancouver

Rodríguez-Caro RC, Oedekoven CS, Graciá E, Anadón JD, Buckland ST, Esteve-Selma MA et al. Low tortoise abundances in pine forest plantations in forest-shrubland transition areas. PLoS One. 2017 Mar 8;12(3). e0173485. https://doi.org/10.1371/journal.pone.0173485

Author

Rodríguez-Caro, Roberto C. ; Oedekoven, Cornelia S. ; Graciá, Eva ; Anadón, José D. ; Buckland, Stephen T. ; Esteve-Selma, Miguel A. ; Martinez, Julia ; Giménez, Andrés. / Low tortoise abundances in pine forest plantations in forest-shrubland transition areas. In: PLoS One. 2017 ; Vol. 12, No. 3.

Bibtex - Download

@article{16ebca5b683646628d7591e4342e69ec,
title = "Low tortoise abundances in pine forest plantations in forest-shrubland transition areas",
abstract = "In the transition between Mediterranean forest and the arid subtropical shrublands of the southeastern Iberian Peninsula, humans have transformed habitat since ancient times. Understanding the role of the original mosaic landscapes in wildlife species and the effects of the current changes as pine forest plantations, performed even outside the forest ecological boundaries, are important conservation issues. We studied variation in the density of the endangered spur-thighed tortoise (Testudo graeca) in three areas that include the four most common land types within the species’ range (pine forests, natural shrubs, dryland crop fields, and abandoned crop fields). Tortoise densities were estimated using a two-stage modeling approach with line transect distance sampling. Densities in dryland crop fields, abandoned crop fields and natural shrubs were higher (>6 individuals/ha) than in pine forests (1.25 individuals/ha). We also found large variation in density in the pine forests. Recent pine plantations showed higher densities than mature pine forests where shrub and herbaceous cover was taller and thicker. We hypothesize that mature pine forest might constrain tortoise activity by acting as partial barriers to movements. This issue is relevant for management purposes given that large areas in the tortoise’s range have recently been converted to pine plantations.",
author = "Rodr{\'i}guez-Caro, {Roberto C.} and Oedekoven, {Cornelia S.} and Eva Graci{\'a} and Anad{\'o}n, {Jos{\'e} D.} and Buckland, {Stephen T.} and Esteve-Selma, {Miguel A.} and Julia Martinez and Andr{\'e}s Gim{\'e}nez",
note = "The Spanish Ministry of Science and European Regional Development Fund funded this work through Projects CGL2012-33536 and CGL2015- 64144; MINECIO/FEDER. Regional Government of the Community of Valencia supported R.R-C. by a postgraduate grant (ACIF/2010/133) and E.G. by a postdoctoral grant (APOSTD/2015/048).",
year = "2017",
month = "3",
day = "8",
doi = "10.1371/journal.pone.0173485",
language = "English",
volume = "12",
journal = "PLoS One",
issn = "1932-6203",
publisher = "Public Library of Science",
number = "3",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Low tortoise abundances in pine forest plantations in forest-shrubland transition areas

AU - Rodríguez-Caro, Roberto C.

AU - Oedekoven, Cornelia S.

AU - Graciá, Eva

AU - Anadón, José D.

AU - Buckland, Stephen T.

AU - Esteve-Selma, Miguel A.

AU - Martinez, Julia

AU - Giménez, Andrés

N1 - The Spanish Ministry of Science and European Regional Development Fund funded this work through Projects CGL2012-33536 and CGL2015- 64144; MINECIO/FEDER. Regional Government of the Community of Valencia supported R.R-C. by a postgraduate grant (ACIF/2010/133) and E.G. by a postdoctoral grant (APOSTD/2015/048).

PY - 2017/3/8

Y1 - 2017/3/8

N2 - In the transition between Mediterranean forest and the arid subtropical shrublands of the southeastern Iberian Peninsula, humans have transformed habitat since ancient times. Understanding the role of the original mosaic landscapes in wildlife species and the effects of the current changes as pine forest plantations, performed even outside the forest ecological boundaries, are important conservation issues. We studied variation in the density of the endangered spur-thighed tortoise (Testudo graeca) in three areas that include the four most common land types within the species’ range (pine forests, natural shrubs, dryland crop fields, and abandoned crop fields). Tortoise densities were estimated using a two-stage modeling approach with line transect distance sampling. Densities in dryland crop fields, abandoned crop fields and natural shrubs were higher (>6 individuals/ha) than in pine forests (1.25 individuals/ha). We also found large variation in density in the pine forests. Recent pine plantations showed higher densities than mature pine forests where shrub and herbaceous cover was taller and thicker. We hypothesize that mature pine forest might constrain tortoise activity by acting as partial barriers to movements. This issue is relevant for management purposes given that large areas in the tortoise’s range have recently been converted to pine plantations.

AB - In the transition between Mediterranean forest and the arid subtropical shrublands of the southeastern Iberian Peninsula, humans have transformed habitat since ancient times. Understanding the role of the original mosaic landscapes in wildlife species and the effects of the current changes as pine forest plantations, performed even outside the forest ecological boundaries, are important conservation issues. We studied variation in the density of the endangered spur-thighed tortoise (Testudo graeca) in three areas that include the four most common land types within the species’ range (pine forests, natural shrubs, dryland crop fields, and abandoned crop fields). Tortoise densities were estimated using a two-stage modeling approach with line transect distance sampling. Densities in dryland crop fields, abandoned crop fields and natural shrubs were higher (>6 individuals/ha) than in pine forests (1.25 individuals/ha). We also found large variation in density in the pine forests. Recent pine plantations showed higher densities than mature pine forests where shrub and herbaceous cover was taller and thicker. We hypothesize that mature pine forest might constrain tortoise activity by acting as partial barriers to movements. This issue is relevant for management purposes given that large areas in the tortoise’s range have recently been converted to pine plantations.

U2 - 10.1371/journal.pone.0173485

DO - 10.1371/journal.pone.0173485

M3 - Article

VL - 12

JO - PLoS One

T2 - PLoS One

JF - PLoS One

SN - 1932-6203

IS - 3

M1 - e0173485

ER -

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ID: 249337145