Effectiveness of hunting regulations for the conservation of a globally-threatened species: The case of the European turtle-dove in Spain

Moreno‐Zarate, Lara; Arroyo, Beatriz; Peach, Will J.

doi:10.1016/j.biocon.2021.109067

Cited by 22 publications

(14 citation statements)

References 38 publications

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“…2019, Moreno‐Zarate et al . 2021). However, more research is still needed into the degradation of wintering habitat, hunting along the central and eastern flyways in Europe and in Africa and the emergence of T. gallinae .…”

Section: Discussionmentioning

confidence: 99%

“…Because our results underline the importance of juvenile survival and the number of clutches in driving observed population decline, research efforts are needed that focus on pressures that have been associated with these vital rates. In addition to degradation of foraging habitat, which is already a focus of current research, efforts to quantify effects of hunting on Turtle Doves in western Europe have recently increased (Lormée et al 2019, Moreno-Zarate et al 2021. However, more research is still needed into the degradation of wintering habitat, hunting along the central and eastern flyways in Europe and in Africa and the emergence of T. gallinae.…”

Section: Discussionmentioning

confidence: 99%

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Searching for the causes of decline in the Dutch population of European Turtle Doves (Streptopelia turtur)

Vries

Foppen

Jeugd

et al. 2021

Ibis

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European Turtle Doves Streptopelia turtur have experienced a sharp decline in population numbers over past decades. Much uncertainty exists about the main cause or causes. Several pressures have been suggested, but because they affect different stages of the life cycle of the Turtle Dove, it is difficult to compare their contributions to the population decline. Here we applied a full life cycle approach to study how different pressures may have resulted in the decline. This was achieved by combining a review of existing literature on possible threats, pressures and the vital rates they concerned, with the analysis of an age‐structured matrix model. The population model was parameterized using estimates from a mark–recapture analysis and supplemented with vital rate estimates from the literature. Comparison with a Life Table Response Experiment (LTRE) was used to determine whether the Turtle Dove literature focuses on those vital rates in which the most important changes have taken place over time. The population model projected a similar decline to that observed in population counts. The LTRE analysis showed that declines in the number of clutches (halved since the 1960s) and in juvenile survival (relative annual rate of change of –1.33% since the 1950s) contributed most to the decline in the projected population growth rate. Although these vital rates are often reported as possible causes of population decline, the reviewed studies often focused on specific reproductive stages, such as egg survival or nestling survival, which did not show a large temporal change. Thus, there is a partial mismatch between our modelling results and the focus in the literature. Juvenile survival is thought to be affected by hunting, degradation of wintering habitat and infection with Trichomonas gallinae, and loss of foraging habitat seems to affect the number of clutches. The focus of conservation measures should therefore be on these threats and pressures. The first steps have already been taken with the completion of the international single species action plan for the conservation of the Turtle Dove and the implementation of the first conservation measures on the breeding grounds.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Searching for the causes of decline in the Dutch population of European Turtle Doves (Streptopelia turtur)

Vries

Foppen

Jeugd

et al. 2021

Ibis

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“…The sustainability of the species hunting in Europe is discussed during the last several years due to a decline in its population [8][9][10]. In 2018, the European Commission approved the International Species Action Plan [2], which suggested a temporary hunting moratorium.…”

Section: Introductionmentioning

confidence: 99%

“…In 2018, the European Commission approved the International Species Action Plan [2], which suggested a temporary hunting moratorium. In Greece and other European Union countries, this moratorium hasn't been implemented yet [8]. However, the country has put hunting bag restrictions into force after 2018 and currently, in 2021, an online system (mobile application) is implemented where hunters report their harvest after their outings.…”

Section: Introductionmentioning

confidence: 99%

European Turtle Dove Population Trend in Greece Using Hunting Statistics of the Past 16-Year Period as Indices

Thomaidis

Papaspyropoulos

Karabatzakis³

et al. 2022

Animals

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The European turtle dove is an important game bird for the hunters in Greece, which is one of a few European countries where its hunting is allowed. The sustainability of the species’ hunting in Europe is discussed during the last several years due to declines in its population, which forced IUCN to classify it as vulnerable. In Greece, its harvest takes place from 20 August and lasts as long as the presence of the species in the country (mid-October). The ARTEMIS project is a Greek statistical database of hunting characteristics, as revealed by questionnaires distributed to hunters. Statistical indicators such as hunting opportunity and hunting harvest are considered in the literature as reliable to show the population trend of a game species. Therefore, in the present research, hunting statistics are used to determine the population trend of the European turtle dove in Greece. State-space modeling was the main procedure used, a method which allows us to deal with errors that exist from hunting bag data or hunting opportunity data assuming that on average the under and overestimations will be equal. The results of the modeling analysis show a stable trend of the variables used, i.e., hunting opportunity, hunting harvest, and juveniles to adult’s ratio. Additionally, the hunting sustainability index showed that the sustainability of the species is improved annually, as a slight positive trend is revealed. This is in favor of the species, if it is considered that the actual percentage of the turtle dove population harvested is lower, since not all doves are encountered by hunters. It is concluded that for the period 2004/05–2019/20, as indicated by the hunting statistics, the population trend of the European turtle dove in Greece was stable and its harvest sustainable.

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“…Environmental conditions experienced on migration and on the non-breeding grounds can also affect the individual physical condition and population dynamics of migratory avian species (e.g., sedge warbler Acrocephalus schoenobaenus, Peach et al 1990; white stork Ciconia ciconia, Kanyamibwa et al 1990;Schaub et al 2005;Baillie and Peach 1992;Robson and Barriocanal 2011; European sand martin Riparia riparia, Szép 1995; turtle dove, Eraud et al 2009). Unsustainable legal and illegal hunting activities along the migration routes are further contributing to the turtle dove decline (Fisher et al 2018;Lormée et al 2020;Moreno-Zarate et al 2021), with eight countries in the EU-27 reporting hunting bags totaling over 1.4 million birds (Hirschfeld et al 2019). Furthermore, turtle doves face multiple threats on the Sahelian non-breeding grounds (henceforth winter grounds), including reduced survival resulting from food shortages, scarcity of roosting sites and freshwater, as well as an increased human disturbance (e.g., agricultural intensification, hunting; Zwarts et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Feather stable isotopes (δ2Hf and δ13Cf) identify the Sub-Saharan wintering grounds of turtle doves from Europe

et al. 2022

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Conservation of migratory birds requires knowledge of breeding and nonbreeding ranges and the connections between them. European turtle doves (Streptopelia turtur) are Palearctic-African long-distance migrants with wintering areas in the Sub-Saharan belt that are classed as vulnerable due to strong population declines. However, detailed non-breeding locations of individuals from different migratory flyways are unknown. To identify wintering regions of turtle doves, we measured stable isotopes of feathers grown on the wintering grounds and used a dual-isotope (hydrogen (δ2Hf) and carbon (δ13Cf)) probabilistic assignment to analyse origins of individuals migrating through the western and central/eastern flyways. The most probable wintering areas for turtle dove samples from both flyways were in the western and central Sub-Sahara. However, we found differences in δ2Hf and δ13Cf values between turtle doves following different migratory routes (western vs central/eastern flyway). This result suggests a higher likelihood of origins in the central Sub-Sahara for central and eastern migrants, while turtle doves using the western flyway originated primarily in the western Sub-Sahara, highlighting the importance of both regions for the future conservation of turtle doves from European breeding populations. The establishment of migratory connectivity of populations requires sampling from birds from the European as well as Asian continent; however, we provide important results that can be used to test hypotheses regarding population declines resulting from factors experienced over the full annual cycle for some populations.

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Effectiveness of hunting regulations for the conservation of a globally-threatened species: The case of the European turtle-dove in Spain

Cited by 22 publications

References 38 publications

Searching for the causes of decline in the Dutch population of European Turtle Doves (Streptopelia turtur)

Searching for the causes of decline in the Dutch population of European Turtle Doves (Streptopelia turtur)

European Turtle Dove Population Trend in Greece Using Hunting Statistics of the Past 16-Year Period as Indices

Feather stable isotopes (δ2Hf and δ13Cf) identify the Sub-Saharan wintering grounds of turtle doves from Europe

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