Habitat and Harvesting Practices Influence Horn Growth of Male
Ibex

J 2020

Habitat and Harvesting Practices Influence Horn Growth of Male Ibex

CARVALHO, João, Ulf BÜNTGEN, Nathalie PETTORELLI, Gregorio MENTABERRE, Xavier OLIVÉ-BOIX et. al.

Základní údaje

Originální název

Habitat and Harvesting Practices Influence Horn Growth of Male Ibex

Autoři

CARVALHO, João, Ulf BÜNTGEN (276 Německo, domácí), Nathalie PETTORELLI, Gregorio MENTABERRE, Xavier OLIVÉ-BOIX, Oihana EIZAGUIRRE, Jesús M. PÉREZ, Paulino FANDOS, Rita T. TORRES, Santiago LAVÍN, Carlos FONSECA a Emmanuel SERRANO

Vydání

Journal of Wildlife Management, Wiley, 2020, 0022-541X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10618 Ecology

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.469

Kód RIV

RIV/00216224:14310/20:00123143

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1002/jwmg.21830

UT WoS

000511485000001

Klíčová slova anglicky

Capra pyrenaica; forest encroachment; horn size; hunting management; monitoring; mountain ungulates; size-selective harvesting; Spain

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 6. 12. 2021 13:49, Mgr. Marie Šípková, DiS.

Anotace

V originále

Size-selective harvesting of wild ungulates can trigger a range of ecological and evolutionary consequences. It remains unclear how environmental conditions, including changes in habitat, climate, and local weather conditions, dilute or strengthen the effects of trophy hunting. We analyzed horn length measurements of 2,815 male ibex (Capra pyrenaica) that were harvested from 1995 to 2017 in Els Ports de Tortosa i Beseit National Hunting Reserve in northeastern Spain. We used linear mixed models to determine the magnitude of inter-individual horn growth variability and partial least square path models to evaluate long-term effects of environmental change, population size, and hunting strategy on horn growth. Age-specific horn length significantly decreased over the study period, and nearly a quarter (23%) of its annual variation was attributed to individual heterogeneity among males. The encroachment of pine (Pinus spp.) forests had a negative effect on annual horn growth, possibly through nutritional impoverishment. The harvesting of trophy and selective individuals (e.g., small-horned males) from the entire population increased horn growth, probably because it reduced the competition for resources and prevented breeding of these smaller males. Local weather conditions and population size did not influence horn growth. Our study demonstrates how habitat changes are altering the horn growth of male ibex. We suggest that habitat interventions, such the thinning of pine forests, can contribute to securing the sustainability of trophy hunting. Even in situations where size-selective harvesting is not causing a detectable phenotypic response, management actions leading to the expansion of preferred land cover types, such as grass-rich open areas, can have a positive effect on ungulate fitness. Forest encroachment on open meadows and heterogeneous grasslands is pervasive throughout Mediterranean ecosystems. Therefore, our management recommendations can be extended to the landscape level, which will have the potential to mitigate the side effects of habitat deterioration on the phenotypic traits of wild ibex.

Citovat

CARVALHO, João, Ulf BÜNTGEN, Nathalie PETTORELLI, Gregorio MENTABERRE, Xavier OLIVÉ-BOIX, Oihana EIZAGUIRRE, Jesús M. PÉREZ, Paulino FANDOS, Rita T. TORRES, Santiago LAVÍN, Carlos FONSECA a Emmanuel SERRANO. Habitat and Harvesting Practices Influence Horn Growth of Male Ibex. Journal of Wildlife Management. Wiley, 2020, roč. 84, č. 4, s. 651-665. ISSN 0022-541X. Dostupné z: https://dx.doi.org/10.1002/jwmg.21830.

@article{1807848,
   author = {Carvalho, João and Büntgen, Ulf and Pettorelli, Nathalie and Mentaberre, Gregorio and OlivéandBoix, Xavier and Eizaguirre, Oihana and Pérez, Jesús M. and Fandos, Paulino and Torres, Rita T. and Lavín, Santiago and Fonseca, Carlos and Serrano, Emmanuel},
   article_number = {4},
   doi = {http://dx.doi.org/10.1002/jwmg.21830},
   keywords = {Capra pyrenaica; forest encroachment; horn size; hunting management; monitoring; mountain ungulates; size-selective harvesting; Spain},
   language = {eng},
   issn = {0022-541X},
   journal = {Journal of Wildlife Management},
   title = {Habitat and Harvesting Practices Influence Horn Growth of Male Ibex},
   url = {https://wildlife.onlinelibrary.wiley.com/doi/10.1002/jwmg.21830},
   volume = {84},
   year = {2020}
}

TY  - JOUR
ID  - 1807848
AU  - Carvalho, João - Büntgen, Ulf - Pettorelli, Nathalie - Mentaberre, Gregorio - Olivé-Boix, Xavier - Eizaguirre, Oihana - Pérez, Jesús M. - Fandos, Paulino - Torres, Rita T. - Lavín, Santiago - Fonseca, Carlos - Serrano, Emmanuel
PY  - 2020
TI  - Habitat and Harvesting Practices Influence Horn Growth of Male Ibex
JF  - Journal of Wildlife Management
VL  - 84
IS  - 4
SP  - 651-665
EP  - 651-665
PB  - Wiley
SN  - 0022541X
KW  - Capra pyrenaica
KW  - forest encroachment
KW  - horn size
KW  - hunting management
KW  - monitoring
KW  - mountain ungulates
KW  - size-selective harvesting
KW  - Spain
UR  - https://wildlife.onlinelibrary.wiley.com/doi/10.1002/jwmg.21830
N2  - Size-selective harvesting of wild ungulates can trigger a range of ecological and evolutionary consequences. It remains unclear how environmental conditions, including changes in habitat, climate, and local weather conditions, dilute or strengthen the effects of trophy hunting. We analyzed horn length measurements of 2,815 male ibex (Capra pyrenaica) that were harvested from 1995 to 2017 in Els Ports de Tortosa i Beseit National Hunting Reserve in northeastern Spain. We used linear mixed models to determine the magnitude of inter-individual horn growth variability and partial least square path models to evaluate long-term effects of environmental change, population size, and hunting strategy on horn growth. Age-specific horn length significantly decreased over the study period, and nearly a quarter (23%) of its annual variation was attributed to individual heterogeneity among males. The encroachment of pine (Pinus spp.) forests had a negative effect on annual horn growth, possibly through nutritional impoverishment. The harvesting of trophy and selective individuals (e.g., small-horned males) from the entire population increased horn growth, probably because it reduced the competition for resources and prevented breeding of these smaller males. Local weather conditions and population size did not influence horn growth. Our study demonstrates how habitat changes are altering the horn growth of male ibex. We suggest that habitat interventions, such the thinning of pine forests, can contribute to securing the sustainability of trophy hunting. Even in situations where size-selective harvesting is not causing a detectable phenotypic response, management actions leading to the expansion of preferred land cover types, such as grass-rich open areas, can have a positive effect on ungulate fitness. Forest encroachment on open meadows and heterogeneous grasslands is pervasive throughout Mediterranean ecosystems. Therefore, our management recommendations can be extended to the landscape level, which will have the potential to mitigate the side effects of habitat deterioration on the phenotypic traits of wild ibex.
ER  -

CARVALHO, João, Ulf BÜNTGEN, Nathalie PETTORELLI, Gregorio MENTABERRE, Xavier OLIVÉ-BOIX, Oihana EIZAGUIRRE, Jesús M. PÉREZ, Paulino FANDOS, Rita T. TORRES, Santiago LAVÍN, Carlos FONSECA a Emmanuel SERRANO. Habitat and Harvesting Practices Influence Horn Growth of Male Ibex. \textit{Journal of Wildlife Management}. Wiley, 2020, roč.~84, č.~4, s.~651-665. ISSN~0022-541X. Dostupné z: https://dx.doi.org/10.1002/jwmg.21830.

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