Indirect effect of climate change: Shifts in ratsnake behavior alter intensity and timing of avian nest predation

DeGregorio, Brett A.; Westervelt, James D.; Sperry, Jinelle H.

doi:10.1016/j.ecolmodel.2015.05.031

Cited by 43 publications

(26 citation statements)

References 55 publications

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“…These reproductive behaviors provide a mechanism through which pied babblers can respond flexibly to interannual variation in rainfall, laying and incubating more clutches and producing more surviving young in breeding seasons that follow a drought. An alternative explanation for the pattern that we observed could be that higher numbers of clutches initiated in non-drought years indicate higher rates of nest predation, an important cause of reproductive failure in birds (Mayer et al, 2009;DeGregorio et al, 2015;Mortensen and Reed, 2018). Previous research in sociable weavers (Philetairus socius) has shown that reproductive effort (defined as number of clutches laid and incubated) increases when predation is high (Mares et al, 2017).…”

Section: Discussionmentioning

confidence: 52%

Compensatory Breeding in Years Following Drought in a Desert-Dwelling Cooperative Breeder

et al. 2020

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Variation in weather patterns can influence reproductive effort and success not only within but also between breeding seasons. Where environmental conditions can be highly variable between years, the weather, and particularly extreme weather events such as heat waves and droughts, may exert a strong influence on reproductive effort (number of breeding attempts) and success (number of surviving young) from one breeding season to the next. We used a 15-year dataset for a cooperatively breeding bird, the southern pied babbler Turdoides bicolor, to determine the impact of high temperatures and drought on reproductive effort and success. We tested the influence on reproductive effort and success of mean daily maximum air temperature and drought both within a breeding season, to determine the relative importance of current conditions, and during the previous breeding season, to determine the relative importance of compensatory effects in response to prior conditions. Reproductive effort and success were lower during breeding seasons characterized by drought, and higher in the breeding seasons that followed droughts, but were not predicted by mean daily maximum temperatures measured over the full length of the breeding season. We provide evidence of compensatory breeding following drought in a bird species endemic to a semi-arid ecosystem and suggest that compensatory mechanisms may be an important part of both long-term population persistence and post-drought population recovery.

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Section: Discussionmentioning

confidence: 52%

Compensatory Breeding in Years Following Drought in a Desert-Dwelling Cooperative Breeder

et al. 2020

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“…While we found evidence of significant direct and/or indirect effects of climate upon the abundance of all the species tested, the varyingly reduced SEM R 2 values reflect additional ecological processes that very well may further contribute toward explaining the patterns of abundance of these species (Shipley, ), as well as, perhaps, the relative rarity of the 46 other species observed during the study. For example, prey availability determines patterns of avian abundance (Holmes, ; Jones, Doran, & Holmes, ) as do predators (DeGregorio, Westervelt, Weatherhead, & Sperry, ; Sherry et al, ; Thompson, ). Competition is also a well‐known determinant of species distributions (Freeman & Montgomery, ; Martin, , ), especially along environmental gradients (Jankowski, Robinson, & Levey, ; Terborgh, ) and among conspecifics (Able & Noon, ; Srinivasan, Elsen, Tingley, & Wilcove, ).…”

Section: Discussionmentioning

confidence: 99%

Direct and indirect effects of climate on bird abundance along elevation gradients in the Northern Appalachian mountains

Duclos

DeLuca

King

2019

Diversity and Distributions

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Aim:The stratification of organisms along elevational gradients is widely reported, with montane communities characterized by species occurring in relatively small and isolated populations; these species are of considerable interest to ecologists and conservationists. This stratification is generally attributed to climatic zonation. Evidence that species are shifting upward in elevation has fuelled speculation that species are tracking their climatic niches in response to climate change. Uncertainty regarding the degree to which climate directly influences species abundance versus the degree to which climate has an indirect influence via vegetation represents a key impediment to understanding the ecology of montane species; here, we evaluate these direct and indirect effects. Location: White Mountains, New Hampshire, USA. Methods: We used N-mixture models to correct for imperfect detection of species, principal component analysis to represent gradients in vegetation structure and composition and structural equation models to assign variation to the direct and indirect effects of climate upon birds.Results: Analysis of 13 species revealed that climate exerts direct influences on bird abundance and indirect influences mediated by vegetation composition and structure. All species exhibited indirect effects of climate via forest habitat, with 77% exhibiting both direct and indirect effects and 53% exhibiting stronger indirect effects. Main conclusions:We provide insight into the mechanistic pathways of how climate influences the distribution of species along elevational gradients, underscoring the complex vulnerability of species to climate change. Our results reveal that the majority of species experience both direct and indirect effects of climate, implying that forests play a key role in mediating climate effects. For species that are primarily influenced by climate directly, typical climate envelope models may continue to be informative, but for the majority of the species included in this study, we show that distribution models should also include measures of habitat. K E Y W O R D S climate change, climate effects, montane bird abundance, spruce-fir ecosystems, structural equation modelling | 1671 DUCLOS et aL.

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“…Other papers from the environmental sciences area have featured elements related to: agro diversity in agro-ecosystems [55], indirect effect of climate change [56], complex human-aquifer interactions in managed groundwater systems [57], relationship between industrial firms, high-carbon, and low-carbon energy [58], modeling effectiveness of management practices for flood mitigation [59], the fire effect on a forest ecosystem [60], studying the population-environment relationship in the Galapagos Islands [61].…”

Section: Examples Of Agent-based Modeling Applicationsmentioning

confidence: 99%

Modeling the Consumers Opinion Influence in Online Social Media in the Case of Eco-friendly Products

et al. 2019

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Social influence has a positive impact on the purchase intention for eco-friendly products along with other subjective and objective aspects related to environmental attitude, product attitude, and subjective and objective knowledge. Also, exposure to media has been proven to have a significant positive affect on environmental attitude, with effect on the purchase intention. Several recent studies have shown the importance of consumers’ influence in online social networks, underlying the role played by the online environments over consumers’ attitude. As a result, the current research tries to analyze the influence exerted on consumers’ decision to purchase eco-friendly products by their activity in online social environments. Using a questionnaire, filled-in by 409 respondents, a series of variables have been extracted with regard to the eco-friendly products. An agent-based model has been created, fed with the values of the variables extracted from the questionnaire, and used for simulations. As a result, it has been observed that an increase in online media exposure can have a high positive impact on the eco-friendly product adoption. Depending on the type of product—soft or durable good—different times for the eco-friendly product adoption have been determined relatively to the considered variables. Last, the possible limitations of using an agent-based modeling approach are discussed, along with possible extensions and improvements.

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Indirect effect of climate change: Shifts in ratsnake behavior alter intensity and timing of avian nest predation

Cited by 43 publications

References 55 publications

Compensatory Breeding in Years Following Drought in a Desert-Dwelling Cooperative Breeder

Compensatory Breeding in Years Following Drought in a Desert-Dwelling Cooperative Breeder

Direct and indirect effects of climate on bird abundance along elevation gradients in the Northern Appalachian mountains

Modeling the Consumers Opinion Influence in Online Social Media in the Case of Eco-friendly Products

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