Fluctuation in the abundance of the narrow-headed ant (Formica exsecta, hYmenoptera, Formicidae) and climatic changes in the northeastern part of its range

Alfimov, A. V.; Берман, Д. И.; Zhigulskaya, Z. A.

doi:10.1134/s0013873811020060

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…There is also limited data on the influence of climate change on the foraging strategies and physiological adaptations of ants from temperate ecosystems that forage at their upper thermal limits, although some information is provided by studies performed in Asia. It was demonstrated that Formica exsecta, which was a relatively rare and sporadically distributed species in the region of the Kolyma River (Asian part of Russia), became the dominant species of the mesofauna of this region, which is the effect of the warm winters in the last decade (Alfimov et al 2011). The influence of climate change was also reported in the taiga during unusually hot periods in the summer of 2010.…”

Section: Discussionmentioning

confidence: 97%

The influence of age and development temperature on the temperature-related foraging risk of Formica cinerea ants

Ślipiński

Trigos-Peral

Maák

et al. 2021

Behav Ecol Sociobiol

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Climate change and the subsequent increase of global temperature are the most current and important threats to biodiversity. Despite the importance of temperature, our knowledge about the level of behavioural and physiological adaptations of ant species from temperate regions to cope with high temperatures is limited compared to the broad knowledge of typical thermal specialists from warmer regions. In the current study, we investigated the temperature-related foraging risk of xerothermic ant species from the temperate climate in Europe, Formica cinerea. Our aims were to check how an increase in external soil temperature affects the foraging activity of workers and how the temperature during development and worker age affects foraging activity in high temperatures. Based on our results, we can draw the following conclusions: (1) the majority of workers utilize a risk-aversive strategy in relation to foraging in high surface temperatures; (2) pupal development temperature affects the risk taken by adult workers: workers that developed in a higher temperature forage more often but for shorter intervals compared to workers that developed in a lower temperature; (3) age is an important factor in temperature-related foraging activity, as with increasing age, workers forage significantly longer at the highest temperatures. Our study is one of the first to assess the potential factors that can affect the foraging risk of ants from a temperate climate in high ambient temperatures. Significance statement Our study is the first direct test of workers' age and the development temperature of pupae on the thermal-related foraging strategy of adult F. cinerea workers. It shows that worker age and the development temperature of pupae interact to promote tolerance of thermal stress. We found that with increasing age, workers are prone to forage significantly longer at the highest and riskiest temperatures. Workers that developed in the high temperature (28°C) foraged more often but for shorter intervals compared to workers that developed in the lower temperature (20°C). Interestingly, the factor of age is more significant for ants that developed in the higher temperature of 28°C; the foraging time of these ants significantly increased with their age.

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Section: Discussionmentioning

confidence: 97%

The influence of age and development temperature on the temperature-related foraging risk of Formica cinerea ants

Ślipiński

Trigos-Peral

Maák

et al. 2021

Behav Ecol Sociobiol

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UAV data and deep learning: efficient tools to map ant mounds and their ecological impact

Monsimet,

Sjögersten,

Sanders

et al. 2024

Remote Sens Ecol Conserv

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High‐resolution unoccupied aerial vehicle (UAVs) data have alleviated the mismatch between the scale of ecological processes and the scale of remotely sensed data, while machine learning and deep learning methods allow new avenues for quantification in ecology. Ant nests play key roles in ecosystem functioning, yet their distribution and effects on entire landscapes remain poorly understood, in part because they and their mounds are too small for satellite remote sensing. This research maps the distribution and impact of ant mounds in a 20 ha treeline ecotone. We evaluate the detectability from UAV imagery using a deep learning model for object detection and different combinations of RGB, thermal and multispectral sensor data. We were able to detect ant mounds in all imagery using manual detection and deep learning. However, the highest precision rates were achieved by deep learning using RGB data which has the highest spatial resolution (1.9 cm) at comparable UAV flight height. While multispectral data were outperformed for detection, it allows for novel insights into the ecology of ants and their spatial impact on vegetation productivity using the normalized difference vegetation index. Scaling up, this suggests that ant mounds quantifiably impact vegetation productivity for up to 4% of our study area and up to 8% of the Betula nana vegetation communities, the vegetation type with the highest abundance of ant mounds. Therefore, they could have an overlooked role in nutrient‐limited tundra vegetation, and on the shrubification of this habitat. Further, we show the powerful combination UAV multi‐sensor data and deep learning for efficient ecological tracking and monitoring of mound‐building ants and their spatial impact.

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Preadaptation of Formica aquilonia and Formica lugubris ants (Hymenoptera, Formicidae) to low wintering temperatures in Northeast Asia

Берман

Zhigulskaya

2012

Entmol. Rev.

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Fluctuation in the abundance of the narrow-headed ant (Formica exsecta, hYmenoptera, Formicidae) and climatic changes in the northeastern part of its range

Cited by 3 publications

References 3 publications

The influence of age and development temperature on the temperature-related foraging risk of Formica cinerea ants

The influence of age and development temperature on the temperature-related foraging risk of Formica cinerea ants

UAV data and deep learning: efficient tools to map ant mounds and their ecological impact

Preadaptation of Formica aquilonia and Formica lugubris ants (Hymenoptera, Formicidae) to low wintering temperatures in Northeast Asia

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