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Ecological Monographs
Climate warming is considered to be among the most serious of anthropogenic stresses to the environment, because it not only has direct effects on biodiversity, but it also exacerbates the harmful effects of other human‐mediated threats. The associated consequences are potentially severe, particularly in terms of threats to species preservation, as well as in the preservation of an array of ecosystem services provided by biodiversity. Among the most affected groups of animals are insects—central components of many ecosystems—for which climate change has pervasive effects from individuals to communities. In this contribution to the scientists' warning series, we summarize the effect of the gradual global surface temperature increase on insects, in terms of physiology, behavior, phenology, distribution, and species interactions, as well as the effect of increased frequency and duration of extreme events such as hot and cold spells, fires, droughts, and floods on these parameters. ...
Encyclopedia of Life Sciences, 2001
Climate exerts powerful effects on the distribution and abundance of the earth's insect species, and we should expect climate warming to generate changes for many insect populations and the ecosystems they inhabit. A substantial scientific literature provides a foundation for describing how insect species are responding to recent climatic trends on the basis of insect physiology, and predicting generalised species distributions and population dynamics for the future. Warmer temperatures generally lead to more rapid development and survival in insects in mid-to high latitudes, which can account for detectable and unambiguous shifts in a range of insect species over the past half century. Increased warmth also advances the onset of insect life cycles for the many species that use thermal cues to match the timing of life history events with the changing seasons. Owing to their relatively short life cycles, high reproductive capacity and high degree of mobility, insects' physiological responses to warming temperatures can also generate particularly large and rapid effects on species population dynamics.
Climate change is the most debated issue of time-posing hazardous impacts on life on earth. Like other living entities, insects are also influenced by rising temperatures, elevated carbon dioxide (CO2) and fluctuating precipitating patterns as range expansion, increased epizootics (insect outbreaks) and new species introduction in regions where previously these were not reported. Increasing temperature and elevated CO2 have substantial impacts on plant–insect interaction and integrated pest management programmes. Rising temperature leading to rapid development of insects and increasing the epizootics of harmful insects is a precarious threat not only to agroforestry but to urban extents as well. By employing the proactive and modern scientific management strategies like monitoring, modelling prediction, planning, risk rating, genetic diversity and breeding for resistance, the suspicions innate to climate change effects on can be diminished.
To understand how researchers are tackling globally important issues, it is crucial to identify whether current research is comprehensive enough to make substantive predictions about general responses. We examined how research on climate change affecting insects is being assessed, what factors are being tested and the localities of studies, from 1703 papers published between 1985 and August 2012. Most published research (64%) is generated from Europe and North America and being dedicated to core data analysis, with 29% of the studies analysed dedicated to Lepidoptera and 22% Diptera: which are well above their contribution to the currently identified insect species richness (estimated at 13% and 17% respectively). Research publications on Coleoptera fall well short of their proportional contribution (19% of publications but 39% of insect species identified), and to a lesser extent so do Hemiptera, and Hymenoptera. Species specific responses to changes in temperature by assessing distribution/range shifts or changes in abundance were the most commonly used methods of assessing the impact of climate change on insects. Research on insects and climate change to date is dominated by manuscripts assessing butterflies in Europe, insects of economic and/or environmental concern in forestry, agriculture, and model organisms. The research on understanding how insects will respond to a rapidly changing climate is still in its infancy, but the current trends of publications give a good basis for how we are attempting to assess insect responses. In particular, there is a crucial need for broader studies of ecological, behavioural, physiological and life history responses to be addressed across a greater range of geographic locations, particularly Asia, Africa and Australasia, and in areas of high human population growth and habitat modification. It is still too early in our understanding of taxa responses to climate change to know if charismatic taxa, such as butterflies, or disease vectors, including Diptera, can be used as keystone taxa to generalise other insect responses to climate change. This is critical as the basic biology of most species is still poorly known, and dominant, well studied taxa may show variable responses to climate change across their distribution due to regional biotic and abiotic How to cite this article Andrew et al. (2013), Assessing insect responses to climate change: What are we testing for? Where should we be heading? PeerJ 1:e11; DOI 10.7717/peerj.11
Insect responses to environmental change are crucial for understanding how the natural world and those animal species that are manipulated by humans will respond to climate change. Insects play fundamental roles in providing services for animals and plants, such as pollination to native plants and crops, the turnover of nutrients, and reducing pest species via natural enemies. Many other insect species are pests of crops and forests, carriers of disease, invasive and nuisance insects to humans. They are also likely to be affected by climate change and may even pose considerable risks to sustainable food production or human health.
2020
Insects have diversified through 400 million years of Earth’s changeable climate, yet recent and ongoing shifts in patterns of temperature and precipitation pose novel challenges as they combine with decades of other anthropogenic stressors including the conversion and degradation of land. Here we consider how insects are responding to recent climate change, while summarizing the literature on long-term monitoring of insect populations in the context of climatic fluctuations. Results to date suggest that climate change impacts on insects have the potential to be considerable, even when compared to changes in land use. The importance of climate is illustrated with a case study from the butterflies of Northern California, where we find that population declines have been severe in high-elevation areas removed from the most immediate effects of habitat loss. These results shed light on the complexity of montane-adapted insects responding to changing abiotic conditions and raise question...
Global Change Biology, 2002
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Dynamics of Crop Protection and Climate Change Studera Press, 2016
Global Change Biology, 2012
Ongoing global climate change presents serious challenges in conservation biology, forcing us to revisit previous tools and principles based on how species may respond to novel climatic conditions. There is currently a major gap between predictions of species vulnerability and management strategies, despite the fact that linking these areas is fundamental for future biodiversity conservation. Herein, we evaluate what drives vulnerability to climate change in three Iberian endemic water beetles, representing three independent colonizations of the same habitat, employing comparative thermal physiology, species distribution models and estimations of species dispersal capacity. We derive conservation strategies for each species based on their differential capacity to persist and/or potential to shift their ranges in response to global warming. We demonstrate that species may be affected by climatic warming in very different ways, despite having broadly similar ecological and biogeographical traits. The proposed framework provides an effective complement to traditional species vulnerability assessments, and could aid the development of more effective conservation strategies in the face of global warming.
2012
The strength and direction of phenological responses to changes in climate have been shown to vary significantly both among species and among populations of a species, with the overall patterns not fully resolved. Here, we studied the temporal and spatial variability associated with the response of several insect species to recent global warming. We use hierarchical models within a model comparison framework to analyze phenological data gathered over 40 years by the Japan Meteorological Agency on the emergence dates of 14 insect species at sites across Japan. Contrary to what has been predicted with global warming, temporal trends of annual emergence showed a later emergence day for some species and sites over time, even though temperatures are warming. However, when emergence data were analyzed as a function of temperature and precipitation, the overall response pointed out an earlier emergence day with warmer conditions. The apparent contradiction between the response to temperature and trends over time indicates that other factors, such as declining populations, may be affecting the date phenological events are being recorded. Overall, the responses by insects were weaker than those found for plants in previous work over the same time period in these ecosystems, suggesting the potential for ecological mismatches with deleterious effects for both suites of species. And although temperature may be the major driver of species phenology, we should be cautious when analyzing phenological datasets as many other factors may also be contributing to the variability in phenology.
Intertwined: Human-Nature Interactions in Southeast Asia, Eds. Nyx Chong, Venessa Ng and Levonne Goh
Listening to Insects for a Message from the Future Is global climate change starting to affect regional ecology? We know that the Arctic is melting rapidlybut are things changing elsewhere in the world? How would we know? One way to find out is to ask the bugs.
Climate change is now estimated by some biologists to be the main threat to biodiversity, but doubts persist regarding which species are most at risk, and how best to adapt conservation management. Insects are expected to be highly responsive to climate change, because they have short life cycles which are strongly influenced by temperature.Insects also constitute the most diverse taxonomic group, carrying out biotic interactions of importance for ecological functioning and ecosystem services, so their responses to climate change are likely to be of considerable wider ecological significance. However, a review of recent published evidence of observed and modelled effects of climate change in ten high-ranking journals shows that comparatively few such studies have focused on insects. The majority of these studies are on Lepidoptera, because of the existence of detailed contemporary and historical datasets. These biases in published information may influence conclusions regarding the threat of climate change to insect biodiversity. Assessment of the vulnerability of insect species protected by the Bern Convention on the Conservation of European Wildlife and Natural Habitats also emphasises that most information is available for the Lepidoptera. In the absence of the necessary data to carry out detailed assessments of the likely effects of climate change on most threatened insects, we consider how autecological studies may help to illuminate the potential vulnerability of species, and draw preliminary conclusions about the priorities for insect conservation and research in a changing climate.
Frontiers in Ecology and the Environment
Although it is well known that insects are sensitive to temperature, how they will be affected by ongoing global warming remains uncertain because these responses are multifaceted and ecologically complex. We reviewed the effects of climate warming on 31 globally important phytophagous (plant-eating) insect pests to determine whether general trends in their responses to warming were detectable. We included four response categories (range expansion, life history, population dynamics, and trophic interactions) in this assessment. For the majority of these species, we identified at least one response to warming that affects the severity of the threat they pose as pests. Among these insect species, 41% showed responses expected to lead to increased pest damage, whereas only 4% exhibited responses consistent with reduced effects; notably, most of these species (55%) demonstrated mixed responses. This means that the severity of a given insect pest may both increase and decrease with ongoing climate warming. Overall, our analysis indicated that anticipating the effects of climate warming on phytophagous insect pests is far from straightforward. Rather, efforts to mitigate the undesirable effects of warming on insect pests must include a better understanding of how individual species will respond, and the complex ecological mechanisms underlying their responses.
Entomological Review, 2012
Climate change (first of all the rise in temperature) is currently considered one of the most serious global challenges facing mankind. Here we review the diversity of insect responses to the current climate warming, with particular focus on true bugs (Heteroptera). Insects as ectotherms are bound to respond to the temperature change, and different species respond differently depending on their specific physiological and ecological traits, seasonal cycle, trophic relations, etc. Insect responses to climate warming can be divided into six categories: changes in (1) ranges, (2) abundance, (3) phenology, (4) voltinism, (5) morphology, physiology, and behavior, and (6) relationships with other species and in the structure of communities. Changes in ranges and phenology are easier to notice and record than other responses. Range shifts have been reported more often in Lepidoptera and Odonata than in other insect orders. We briefly outline the history and eco-physiological background of the recent range limit changes in the Southern green stink bug Nezara viridula (Heteroptera, Pentatomidae) in central Japan. Range expansion in individual species can lead to enrichment of local faunas, especially at high latitudes. Phenological changes include not only advances in development in spring but also shifts in phenology later in the season. The phenophases related to the end of activity usually shift to later dates, thus prolonging the period of active development. This may have both positive and negative consequences for the species and populations. As with any other response, the tendencies in phenological changes may vary among species and climatic zones. The proven cases of change in voltinism are rare, but such examples do exist. Application of models based on thermal parameters of development suggests that a rise in temperature by 2°C will result in an increased number of annual generations in many species from different arthropod taxa (up to three or four additional generations in Thysanoptera, Aphidoidea, and Acarina). The warming-mediated changes in physiology, morphology, or behavior are difficult to detect and prove, first of all because of the absence of reliable comparative data. Nevertheless, there are examples of changes in photoperiodic responses of diapause induction and behavioral responses related to search of shelters for summer diapause (aestivation). Since (1) individual species do not exist in isolation and (2) the direction and magnitude of responses even to the same environmental changes vary between species, it may be expected that in many cases the current stable relationships between species will be affected. Thus, unequal range shifts in insects and their host plants may disrupt their trophic interactions near the species' range boundaries. Studies of responses to climate warming in more than one interrelated species or in entire communities are extremely rare. The loss of synchronism in seasonal development of community members may indicate inability of the higher trophic levels to adapt fully to climate warming or an attempt of the lower trophic level to escape from the pressure of the higher trophic levels. It is generally supposed that many insect species in the Temperate Climate Zone will benefit in some way from the current climate warming. However, there is some experimental evidence of an opposite or at least much more complex response; the influence of warming might be deleterious for some species or populations. It is suggested that species or populations from the cold or temperate climate have sufficient phenotypic plasticity to survive under the conditions of climate warming, whereas species and populations which already suffer from stress under extreme seasonal temperatures in warmer regions may have a limited "maneuver space" since the current temperatures are close to their upper thermal limits. Without genetic changes, even moderate warming will put these species or populations under serious physiological stress. The accumulated data suggest that responses of insects and the entire biota to climate warming will be complex and will vary depending on the rate of warming and ecological peculiarities of species and regions. Physiological responses will vary in their nature, direction, and magnitude even within one species or population, and especially between seasons. The responses will also differ in different seasons. For example, warming may negatively affect nymphal development during the hot season but at the same time accelerate growth and development during the cold season and/or ensure milder and more favorable overwintering conditions for adults. All these factors will affect population dynamics of particular species and relationships among the members of ecosystems. We should keep in mind that (1) not only selected insect species but almost all the species will be affected, (2) temperature is not the only component of the climatic system that is
Global Change Biology, 2007
Insect Conservation Biology, 2007
The effects of climatic change on insect biodiversity and conservation, and the importance of insects as model systems for biological responses to climatic change and associated conservation measures are described. Studies on recent responses of insects to climatic change (shifts in distribution and phenology) and mechanisms behind climate-related shifts in distribution and phenology (those related to population size, growth, survival, fecundity and adaptive responses, and those associated with biotic interactions, and habitat loss and fragmentation) are reviewed. Models for the prediction of the effects of climatic change on insect conservation and ecology are mentioned.
World Journal of Advanced Research and Reviews, 2023
The purpose of this paper is to review and assess published literature on impact of climate change on insects. A systematic approach was used to accumulate research works of literature on "Impact of climate change on insects." A total of forty-three (43) research papers published between the years 1908 to 2023 were accumulated and used for this review. Tables were used to present all results. A subjective approach was used to select the topics: impact of climate change and insects. In this paper, twenty-three (23) possible impacts of climate change on insects were evaluated and presented. Impact of extreme weather conditions on insects, challenges faced with pest management and strategies to mitigate the effects of climate change were also discussed. The published papers established that temperature, increasing level of carbon dioxide gas (CO2) in the atmosphere and precipitation all contribute to the changing climate that are affecting insect biodiversity, geographical distribution, behavioural preferences and pests' outbreaks that are negatively impacting the agriculture sectors in many countries. This review highlights that more studies should be done in neotropical countries since there is a dearth and demand for research and published data in these biodiversity rich regions.
Frontiers for Young Minds, 2023
Climate change is gripping our planet. News headlines proclaim warmer winters and hotter summers, and these changes are impacting Earth's biodiversity. Have you ever wondered how climate change causes extinctions? This is an important, ongoing research question because understanding how heat impacts living organisms could help us predict how species will cope in a warmer world and give us the knowledge we need to help vulnerable organisms. Insects make honey, pollinate crops, control pests, and recycle waste into nutrients. Despite being numerous and often helpful to humans, insects, and the e ects that climate change is having on them, are often overlooked. Due to climate change, heatwaves are becoming more common and intense. In this article, we explore the impact of simulated heatwaves on a beetle species in the laboratory. Keep
Current Opinion in Insect Science, 2016
As climate change moves insect systems into uncharted territory, more knowledge about insect dynamics and the factors that drive them could enable us to better manage and conserve insect communities. Climate change may also require us to revisit insect management goals and strategies and lead to a new kind of scientific engagement in management decision-making. Here we make five key points about the role of insect science in aiding and crafting management decisions, and we illustrate those points with the monarch butterfly and the Karner blue butterfly, two species undergoing considerable change and facing new management dilemmas. Insect biology has a strong history of engagement in applied problems, and as the impacts of climate change increase, a reimagined ethic of entomology in service of broader society may emerge. We hope to motivate insect biologists to contribute time and effort toward solving the challenges of climate change.
Journal of Crop Improvement, 2014
production is most urgent. Long-term monitoring of population levels and insect behavior, particularly in identifiably sensitive regions, may provide some of the first indications of a biological response to climate change.
Applied Ecology and Environmental Research
Considering insect populations, we can see that climate change affects in many ways: it can cause a shift in geographical spread (Porter et al., 1991; Ward and Masters, 2007), abundance (Ayres and Lombardero, 2000; Olfert and Weiss, 2006) or diversity (Conrad et al., 2002; Feehan et al., 2009; Sharon et al., 2001), it can change the location, the timing and the magnitude of outbreaks of pests (Volney and Fleming, 2000), and it can define the phenological or even the genetic properties of the species (Gordo and Sanz, 2006; Klok and Chown, 2001; Parmesan, 2007). Long-time investigations of special insect populations, simulation models and scenario studies give us very important information about the response of the insects far away and near to our century. Getting to know the potential responses of insect populations to climate change makes us possible to evaluate the adaptation of pest management alternatives as well as to formulate our future management policy.
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