Using multi-scale spatial prioritization criteria to optimize non-natural mortality mitigation of target species

Matías, Antonio Hernández; Mañosa, Santi; Rollan, Àlex; Bosch, Rafel; Tintó, Albert; Real, Joan

doi:10.1016/j.gecco.2020.e01082

Cited by 9 publications

(9 citation statements)

References 48 publications

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“…Our results highlight the importance of identifying problems at the population level, considering that local populations can play a role in the population network, supporting viable metapopulations (Furrer & Pasinelli, 2016; Hernández‐Matías et al, 2020). At this scale, we found that the factors affecting distribution and reproductive success are different.…”

Section: Discussionsupporting

confidence: 65%

“…A trap arises when environments that have been altered are selected by organisms based on previous cues that have been correlated with good habitat suitability (Schlaepfer et al, 2002). Human activities often result in rapid conversion of landscapes, climate change, novel resources in food webs, or human infrastructure such as powerlines or roads, which create new habitat types that may be positively selected but are actually poor in terms of reproduction and survival (Hernández‐Matías et al, 2020; Pärt et al, 2007). There is a lack of data about changes associated with human activities, such as electric infrastructures, considered along with poison and illegal hunting (Hernández‐Matías et al, 2015, 2020), the main reasons for the decline of this species in the area.…”

Section: Discussionmentioning

confidence: 99%

“…Bonelli's eagle (Aquila fasciata) is a long-lived territorial raptor distributed in the western Palearctic from southeast Asia through the Middle East to the western Mediterranean (Orta et al, 2020). This species has suffered a general decline in the last few decades because of high levels of adult and pre-adult mortalities, mainly from electrocution and direct persecution (Hern andez- Matías et al, 2015Matías et al, , 2020. Other factors that have had negative effects on Bonelli's eagle populations are related to the loss of suitable habitat and variations in prey population and interspecific competition with other raptors, such as the golden eagle (Aquila chrysaetos) (Hern andez- Matías et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Long‐term monitoring program reveals a mismatch between spatial distribution and reproductive success in an endangered raptor species in the Mediterranean area

Martínez-Miranzo

Banda

Gardiazábal³

et al. 2022

Ecological Research

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Unmasking the ecological processes responsible for the dynamics of a population is a necessary step toward understanding its threats and viability. We examined a fitness proxy (reproductive success) of an endangered raptor in relation to its ecological niche and spatial distribution to provide insights into the dynamics and potential threats to the population. We first studied how biotic and abiotic conditions drive both the spatial distribution of Bonelli's eagle (Aquila fasciata) and its long-term reproductive success in a large area of northwestern Spain. We focused on the relationship between these two characteristics of the population. Our results showed that biotic factors (occurrence of competitors such as the golden eagle or prey availability) were more associated with the spatial distribution of the species than with its reproductive success. In contrast, abiotic factors describing climate were linked to reproductive success. Most interestingly, we found a mismatch between spatial suitability and reproductive success because reproduction was compromised in the areas that were more suitable for the occurrence of the species. The results suggest that productivity (less than one chick per year), measured as long-term reproductive success, may compromise the population viability and suggest the presence of an underlying mechanism in the population. Our results highlight the benefits of simultaneously considering both large-scale spatial distribution patterns and measures of fitness, which often require larger investments of time, for endangered species conservation programs.

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Section: Discussionsupporting

confidence: 65%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Long‐term monitoring program reveals a mismatch between spatial distribution and reproductive success in an endangered raptor species in the Mediterranean area

Martínez-Miranzo

Banda

Gardiazábal³

et al. 2022

Ecological Research

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“…In areas classified as higher risk, under our framework, such as the Atlantic Forest, a more focused investigation can be applied to search for data on fatalities or power system failures assigned to electrocutions and to evaluate the relationship between landscape composition and electrocution events (e.g. Hernández‐Matías et al ., 2020). The pole location and configuration are important in determining the risk of mortality at the local scale (Mojica et al ., 2018) and to inform the best mitigation interventions.…”

Section: Discussionmentioning

confidence: 99%

Risk of bird electrocution in power lines: a framework for prioritizing species and areas for conservation and impact mitigation

Biasotto

Moreira

Bencke

et al. 2021

Animal Conservation

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Electrocution on power lines is an important human‐related cause of bird mortality and an important conservation issue worldwide. Besides impacts on bird populations, electrocutions cause power outages, resulting in damage to power line network integrity. However, there is a general lack of knowledge on the risk of bird electrocution, especially in developing countries. Generating information over large scales without resorting to local mortality data can be useful for the development of regional management strategies, particularly in countries where electrocution is poorly documented. Here, we developed a framework to model the risk of bird electrocution as an interaction between the species‐specific exposure to power lines (pole density within a species distribution range) and susceptibility (morphological and behavioral traits associated with electrocution hazards). We applied this framework to Brazil, identifying 283 species that face a risk of electrocution, of which 38 were classified as higher risk, mostly raptors (76%). The Pantanal (a large wetland biome) concentrates the greatest cumulative susceptibility due to the high number of species vulnerable to electrocution (i.e. large species using power lines for perching or nesting), while the Atlantic Forest region has a higher risk for electrocution, due to the spatial overlap between the presence of vulnerable species and high exposure to power lines. Furthermore, our study identified spatial patterns of bird electrocution, highlighting priority areas for electrocution susceptibility and electrocution risk to be further investigated, and where measures to mitigate bird electrocutions should be applied on new and existing power lines. Our framework allows a preliminary assessment aimed at identifying areas of higher risk of electrocution, to highlight species vulnerable to this threat and to improve power line routing. This approach can be replicated to other understudied areas of the world where the same information is available.

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“…The implementation of these two last steps is usually very complex because it may require a high budget and a strong level commitment and coordination between managers in charge of conservation and other stakeholders, as well as wildlife technicians or researchers that would perform the evaluation. In our study population, a recent study by Hernández-Matías et al (2020) offers an example of mitigation of electrocution in three territories of Bonelli's Eagle and the evaluation of these management actions in terms of population viability.…”

Section: Discussionmentioning

confidence: 99%

Guiding local-scale management to improve the conservation of endangered populations: the example of Bonelli’s EagleAquila fasciata

Rollan

Hernández‐Matías

Bosch

et al. 2020

Bird Conservation International

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Summary Understanding the environmental drivers of demographic processes is a prerequisite for providing the evidence-based conservation guidance and management actions required to address management goals at population level. Human activities, to which most species are not adapted, are having an ever-increasing impact on the environment. Most policies and strategies focus on broad-scale conservation actions and disregard the fact that this type of action may not be adequate at local scale. In addition, even though the main conservation targets are well known, managers and practitioners lack an explicit framework in which to identify the varying requirements of site-specific conservation actions. Our aim was to provide an accurate tool for prioritizing specific local-scale conservation actions for endangered territorial birds. In this study we describe our proposed framework using a population of the endangered Bonelli’s Eagle Aquila fasciata as a case study. We identified the most relevant environmental drivers linked to demographic parameters (occupation, productivity and survival) at local scale shaping the dynamics of the Bonelli’s Eagle population in Catalonia (Spain). This information will be useful for designing specific local-scale conservation actions in eagles’ territories with low demographic parameter values. This is a good example of how applied research and achievable conservation practices are applicable to other Bonelli’s eagle populations and to those of other endangered raptors.

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Using multi-scale spatial prioritization criteria to optimize non-natural mortality mitigation of target species

Cited by 9 publications

References 48 publications

Long‐term monitoring program reveals a mismatch between spatial distribution and reproductive success in an endangered raptor species in the Mediterranean area

Long‐term monitoring program reveals a mismatch between spatial distribution and reproductive success in an endangered raptor species in the Mediterranean area

Risk of bird electrocution in power lines: a framework for prioritizing species and areas for conservation and impact mitigation

Guiding local-scale management to improve the conservation of endangered populations: the example of Bonelli’s EagleAquila fasciata

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