Possible Effect of Global Climate Change on<i>Caretta caretta</i>(Testudines, Cheloniidae) Nesting Ecology at Guanahacabibes Peninsula, Cuba

Ricardo, Julia Azanza; Martín, María E. Ibarra; Sansón, Gaspar González; Harrison, Emma; Cruz, Yosvani Medina; Bretos, Fernando

doi:10.2744/ccb-1241.1

Cited by 8 publications

(4 citation statements)

References 23 publications

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“…Shifts in nesting phenology have been observed for some sea turtle populations (Azanza-Ricardo et al, 2017;Patel et al, 2016;Weishampel et al, 2004). Because sand temperatures at Bahía de Jiquilisco and Estero Padre Ramos generally decreased over the nesting season in all nest environments at both depths (Figure 4a-d), the decrease in temperature between the beginning (April-May) and end (September-October) of the nesting season-which is reflected in shorter incubation durations and higher percentage of female hatchlings produced during the first half than the second half of the nesting season (Figure 3a,b)suggests that hawksbills could respond to projected temperature increases by nesting later in the season to exploit cooler temperatures.…”

Section: Potential Limitations Of Behavioral Plasticity In Climate mentioning

confidence: 99%

Potential limitations of behavioral plasticity and the role of egg relocation in climate change mitigation for a thermally sensitive endangered species

Liles

Peterson

Seminoff

et al. 2019

Ecology and Evolution

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Anthropogenic climate change is widely considered a major threat to global biodiversity, such that the ability of a species to adapt will determine its likelihood of survival. Egg‐burying reptiles that exhibit temperature‐dependent sex determination, such as critically endangered hawksbill turtles ( Eretmochelys imbricata ), are particularly vulnerable to changes in thermal regimes because nest temperatures affect offspring sex, fitness, and survival. It is unclear whether hawksbills possess sufficient behavioral plasticity of nesting traits (i.e., redistribution of nesting range, shift in nesting phenology, changes in nest‐site selection, and adjustment of nest depth) to persist within their climatic niche or whether accelerated changes in thermal conditions of nesting beaches will outpace phenotypic adaption and require human intervention. For these reasons, we estimated sex ratios and physical condition of hatchling hawksbills under natural and manipulated conditions and generated and analyzed thermal profiles of hawksbill nest environments within highly threatened mangrove ecosystems at Bahía de Jiquilisco, El Salvador, and Estero Padre Ramos, Nicaragua. Hawksbill clutches protected in situ at both sites incubated at higher temperatures, yielded lower hatching success, produced a higher percentage of female hatchlings, and produced less fit offspring than clutches relocated to hatcheries. We detected cooler sand temperatures in woody vegetation (i.e., coastal forest and small‐scale plantations of fruit trees) and hatcheries than in other monitored nest environments, with higher temperatures at the deeper depth. Our findings indicate that mangrove ecosystems present a number of biophysical (e.g., insular nesting beaches and shallow water table) and human‐induced (e.g., physical barriers and deforestation) constraints that, when coupled with the unique life history of hawksbills in this region, may limit behavioral compensatory responses by the species to projected temperature increases at nesting beaches. We contend that egg relocation can contribute significantly to recovery efforts in a changing climate under appropriate circumstances.

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Section: Potential Limitations Of Behavioral Plasticity In Climate mentioning

confidence: 99%

Potential limitations of behavioral plasticity and the role of egg relocation in climate change mitigation for a thermally sensitive endangered species

Liles

Peterson

Seminoff

et al. 2019

Ecology and Evolution

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“…The global trade of these species is the third most important threat for their functional diversity, affecting tortoises and turtles mainly for their use as pets 43 and crocodilians for their skin 44 , 45 . On the other hand, although climate change affects fewer species than other threats, turtles and crocodilians with unique life history strategies could disappear according to our projections 46 . Indeed, the consequences of climate change for these species are found worldwide, including extreme droughts by compromising the fitness of the populations 47 , 48 , flood nesting sites by rising sea levels 49 , coral bleaching due to increasing in temperatures, affecting feeding areas of sea turtles 50 and the imbalance of sex-ratios in populations of species with temperature-dependent sex determination 51 , such as the threatened leatherback turtle ( Dermochelys coriacea ) 52 .…”

Section: Discussionmentioning

confidence: 96%

Anthropogenic impacts on threatened species erode functional diversity in chelonians and crocodilians

et al. 2023

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The Anthropocene is tightly associated with a drastic loss of species worldwide and the disappearance of their key ecosystem functions. The orders Testudines (turtles and tortoises) and Crocodilia (crocodiles, alligators, and gharials) contain numerous threatened, long-lived species for which the functional diversity and potential erosion by anthropogenic impacts remains unknown. Here, we examine 259 (69%) of the existing 375 species of Testudines and Crocodilia, quantifying their life history strategies (i.e., trade-offs in survival, development, and reproduction) from open-access data on demography, ancestry, and threats. We find that the loss of functional diversity in simulated extinction scenarios of threatened species is greater than expected by chance. Moreover, the effects of unsustainable local consumption, diseases, and pollution are associated with life history strategies. In contrast, climate change, habitat disturbance, and global trade affect species independent of their life history strategy. Importantly, the loss of functional diversity for threatened species by habitat degradation is twice that for all other threats. Our findings highlight the importance of conservation programmes focused on preserving the functional diversity of life history strategies jointly with the phylogenetic representativity of these highly threatened groups.

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“…The global trade of these species is the third most important threat for their functional diversity, affecting tortoises and turtles mainly for their use as pets (Luiselli et al, 2016) and crocodiles for their skin (Thorbjarnarson, 1999; Platt and Thorbjarnarson, 2000). On the other hand, although climate change affects fewer species than other threats, turtles and crocodilians with unique life history strategies could disappear according to our projections (Azanza-Ricardo et al, 2017). Indeed, the consequences of climate change for these species are found worldwide, including extreme droughts by compromising the fitness of the populations (Poiani and Johnson, 1991; Rodríguez-Caro et al, 2021), flood nesting sites by rising sea levels (Pike et al, 2015), coral bleaching due to increasing in temperatures, affecting feeding areas of sea turtles (Chaloupka et al, 2008) and the unbalance of sex-ratios in populations of temperature sex-dependent species (Janzen, 1994), such as the threatened leatherback turtle ( Dermochelys coriacea ; Tomillo et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Anthropogenic impacts on threatened species erode functional diversity in turtles and crocodilians

Rodríguez-Caro

Graciá

Blomberg

et al. 2022

Preprint

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The Anthropocene is tightly associated with a drastic loss of species worldwide, and consequently, with the disappearance of key ecosystem functions. The on-going reduction in species functionality is driven by global and local threats. The orders Testudines (turtles and tortoises) and Crocodilia (crocodilians and alligators) contain numerous threatened, long-lived species for which their functional diversity and potential erosion by anthropogenic impacts remains unknown. Here, we examine 259 of the existing 375 species of Testudines and Crocodilia quantifying their life history strategies (i.e., schedules of survival, development, and reproduction) from open-access data on their demography, ancestry, and threats. We find that the loss of functional diversity in simulated extinction scenarios of threatened species is greater than expected by chance. Moreover, the effects of unsustainable local consumption, diseases, and pollution are associated to specific functional strategies. Meanwhile climate change, habitat disturbance, and global trade affect all species independent of their life history strategy. Importantly, the loss of functional diversity for threatened species by habitat disturbance is twice greater than for all other threats. Our findings highlight the key importance of conservation programmes focused on preserving the functional diversity of life history strategies jointly with the phylogenetic representativity of these highly threatened groups.

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Possible Effect of Global Climate Change onCaretta caretta(Testudines, Cheloniidae) Nesting Ecology at Guanahacabibes Peninsula, Cuba

Cited by 8 publications

References 23 publications

Potential limitations of behavioral plasticity and the role of egg relocation in climate change mitigation for a thermally sensitive endangered species

Potential limitations of behavioral plasticity and the role of egg relocation in climate change mitigation for a thermally sensitive endangered species

Anthropogenic impacts on threatened species erode functional diversity in chelonians and crocodilians

Anthropogenic impacts on threatened species erode functional diversity in turtles and crocodilians

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