Pub Date : 2025-07-16DOI: 10.1016/j.ecochg.2025.100097
Amanda M. Kissel , Catherine S. Jarnevich , Andrea F. Currylow , Amy A. Yackel Adams
Historically, constrained temperature ranges limited the spread of invasive herpetofauna into temperate climates, but climate change is predicted to facilitate broader distributions. There are three species of tegu lizards native to South America and available in the pet trade that have a high risk of invasion and deleterious impacts to native ecosystems in the United States (US). There are four populations of the black and white tegu (Salvator merianae) in Florida and sightings as far north as North Carolina and west as California. Red tegus (S. rufescens) have been observed in Florida, and there is an established population of gold tegus (Tupinambis teguixin) in Florida. We updated previous distribution models for the contiguous United States (CONUS) that used occurrence points from their native range in South America to evaluate potential changes given current and future climate scenarios (+2 °C and +4 °C warming). Under current climate conditions, one or more tegu species have the potential to occupy most ecoregions in the CONUS. Under a + 4 °C warming scenario, suitable habitat increases by 11 % for S. merianae, 31 % for S. rufescens. The proportion of suitable habitat for T. teguixin was small under all scenarios, but increased from 0.0003 to 0.0017. For S. merianae, parts of Florida become less suitable, while suitability increases in this region for the other two species. Additionally, much of the western US is projected to be suitable for S. rufescens. Our case study underscores the potential for climate change to compound invasion threats that could outpace effective managerial responses.
从历史上看,有限的温度范围限制了入侵的爬行动物在温带气候中的传播,但预计气候变化将促进更广泛的分布。有三种原产于南美洲的tegu蜥蜴,在宠物贸易中可用,它们有很高的入侵风险,并对美国的本地生态系统产生有害影响。在佛罗里达州有四个黑白相间的tegu (Salvator merianae)种群,北至北卡罗来纳州和西至加利福尼亚州都有目击。在美国佛罗里达州发现了红tegus (S. rufescens),在佛罗里达州也发现了金teguixin (Tupinambis teguixin)种群。我们更新了之前美国(CONUS)的分布模型,该模型使用南美洲原生地的发生点来评估当前和未来气候情景(+2°C和+4°C变暖)下的潜在变化。在目前的气候条件下,一种或多种tegu物种有可能占据CONUS的大部分生态区。在+ 4°C的变暖情景下,沙蚕的适宜栖息地增加11%,沙蚕的适宜栖息地增加31%。在所有情景下,特桂新适宜生境的比例均较小,但从0.0003增加到0.0017。对于merianae来说,佛罗里达的部分地区变得不太适合,而其他两个物种在该地区的适合性增加。此外,美国西部的大部分地区预计适合S. rufescens生长。我们的案例研究强调了气候变化加剧入侵威胁的可能性,这些威胁可能超过有效的管理反应。
{"title":"Modeling current and future distribution of invasive tegu lizards along geopolitical boundaries in the contiguous United States: Implications for invasion threat","authors":"Amanda M. Kissel , Catherine S. Jarnevich , Andrea F. Currylow , Amy A. Yackel Adams","doi":"10.1016/j.ecochg.2025.100097","DOIUrl":"10.1016/j.ecochg.2025.100097","url":null,"abstract":"<div><div>Historically, constrained temperature ranges limited the spread of invasive herpetofauna into temperate climates, but climate change is predicted to facilitate broader distributions. There are three species of tegu lizards native to South America and available in the pet trade that have a high risk of invasion and deleterious impacts to native ecosystems in the United States (US). There are four populations of the black and white tegu (<em>Salvator merianae</em>) in Florida and sightings as far north as North Carolina and west as California. Red tegus (<em>S. rufescens</em>) have been observed in Florida, and there is an established population of gold tegus (<em>Tupinambis teguixin</em>) in Florida. We updated previous distribution models for the contiguous United States (CONUS) that used occurrence points from their native range in South America to evaluate potential changes given current and future climate scenarios (+2 °C and +4 °C warming). Under current climate conditions, one or more tegu species have the potential to occupy most ecoregions in the CONUS. Under a + 4 °C warming scenario, suitable habitat increases by 11 % for <em>S. merianae</em>, 31 % for <em>S. rufescens</em>. The proportion of suitable habitat for <em>T. teguixin</em> was small under all scenarios, but increased from 0.0003 to 0.0017. For <em>S. merianae</em>, parts of Florida become less suitable, while suitability increases in this region for the other two species. Additionally, much of the western US is projected to be suitable for <em>S. rufescens</em>. Our case study underscores the potential for climate change to compound invasion threats that could outpace effective managerial responses.</div></div>","PeriodicalId":100260,"journal":{"name":"Climate Change Ecology","volume":"10 ","pages":"Article 100097"},"PeriodicalIF":0.0,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Climate change is expected to change precipitation patterns and increases the risks of agricultural diseases and pests in rice, a staple crop in Southeast Asia. Apple snails are among the most significant threats to rice production, yet their pest potential under future climate scenarios remains poorly understood. In this study, we investigated the survival, growth (changes in shell length and weight), and rice stem consumption comparing between the invasive Pomacea maculata and the native Pila celebensis, under the SSP5–8.5 scenario in Thailand—one of the leading rice producers and exporters in the word. We observed snail survival, growth, and feeding rates across three temperature treatments: ambient temperature (28°C, control), 29.2 °C (+1.2 °C in the next 20 years), and 30.1 °C (+2.1 °C in the next 40 years). Our results revealed that while the survival probability of the native P. celebensis significantly decreased under the increasing temperatures, the invasive P. maculata remained unaffected. Both species exhibited accelerated growth under warm conditions, but only P. maculata shows increased rice consumption over time and with rising temperatures, while P. celebensis maintains a constant feeding rate. These findings suggest that future warming climate could intensify the pest impact of the invasive P. maculata, potentially causing greater damage to rice production, especially in comparison to native P. celebensis. Our study underlines the need for integrative pest management strategies focused on early-stage eradication of invasives snails to mitigate their impact under future climate.
{"title":"Damaging potential to rice crops of the invasive apple snail (Pomacea maculata) and the native Thai apple snail (Pila celebensis) under changing temperature conditions in Thailand","authors":"Weerada Panchot, Warut Siriwut, Phakhawat Thaweepworadej, Intanon Kolasartsanee","doi":"10.1016/j.ecochg.2025.100096","DOIUrl":"10.1016/j.ecochg.2025.100096","url":null,"abstract":"<div><div>Climate change is expected to change precipitation patterns and increases the risks of agricultural diseases and pests in rice, a staple crop in Southeast Asia. Apple snails are among the most significant threats to rice production, yet their pest potential under future climate scenarios remains poorly understood. In this study, we investigated the survival, growth (changes in shell length and weight), and rice stem consumption comparing between the invasive <em>Pomacea maculata</em> and the native <em>Pila celebensis</em>, under the SSP5–8.5 scenario in Thailand—one of the leading rice producers and exporters in the word. We observed snail survival, growth, and feeding rates across three temperature treatments: ambient temperature (28°C, control), 29.2 °C (+1.2 °C in the next 20 years), and 30.1 °C (+2.1 °C in the next 40 years). Our results revealed that while the survival probability of the native <em>P. celebensis</em> significantly decreased under the increasing temperatures, the invasive <em>P. maculata</em> remained unaffected. Both species exhibited accelerated growth under warm conditions, but only <em>P. maculata</em> shows increased rice consumption over time and with rising temperatures, while <em>P. celebensis</em> maintains a constant feeding rate. These findings suggest that future warming climate could intensify the pest impact of the invasive <em>P. maculata</em>, potentially causing greater damage to rice production, especially in comparison to native <em>P. celebensis</em>. Our study underlines the need for integrative pest management strategies focused on early-stage eradication of invasives snails to mitigate their impact under future climate.</div></div>","PeriodicalId":100260,"journal":{"name":"Climate Change Ecology","volume":"10 ","pages":"Article 100096"},"PeriodicalIF":0.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-28DOI: 10.1016/j.ecochg.2025.100095
Keryn B. Gedan , Whitney C. Hoot , Eduardo Fernández-Pascual
Ecotone communities are areas of high species turnover and steep environmental gradients. We investigated how environmental gradients shape species interactions between upland and tidal wetland grass species to shed light on zonation in these species’ distribution patterns, in the context of understanding how their distributions may change with sea level rise and forest dieback. Across the coastal marsh-forest ecotone, there are stark shifts in two vital conditions for plants: salinity and light availability. We measured these abiotic conditions and plant productivity at sites spanning the ecotone and within a forest clear-cut, where canopy shading had been experimentally removed. In a greenhouse manipulation of plant species neighbor, salinity, and light availability, we hypothesized that plant interactions would become more facilitative in stressful conditions and that more salt tolerant species would also be more light-demanding. Species salt tolerance followed an expected ranking based on species zonation in the field, but all species responded similarly to reductions in light. Plant interactions in all treatments were negative or neutral, never facilitative. Despite low resource availability of light and elevated levels of salinity within the marsh-forest ecotone, plant interactions there reflect a benign stress environment, in which competition is predominant and where resource limitation, stress, and competition have additive, negative effects on plant performance.
{"title":"Plant competition dominates grass species interactions in a migrating marsh-forest ecotone","authors":"Keryn B. Gedan , Whitney C. Hoot , Eduardo Fernández-Pascual","doi":"10.1016/j.ecochg.2025.100095","DOIUrl":"10.1016/j.ecochg.2025.100095","url":null,"abstract":"<div><div>Ecotone communities are areas of high species turnover and steep environmental gradients. We investigated how environmental gradients shape species interactions between upland and tidal wetland grass species to shed light on zonation in these species’ distribution patterns, in the context of understanding how their distributions may change with sea level rise and forest dieback. Across the coastal marsh-forest ecotone, there are stark shifts in two vital conditions for plants: salinity and light availability. We measured these abiotic conditions and plant productivity at sites spanning the ecotone and within a forest clear-cut, where canopy shading had been experimentally removed. In a greenhouse manipulation of plant species neighbor, salinity, and light availability, we hypothesized that plant interactions would become more facilitative in stressful conditions and that more salt tolerant species would also be more light-demanding. Species salt tolerance followed an expected ranking based on species zonation in the field, but all species responded similarly to reductions in light. Plant interactions in all treatments were negative or neutral, never facilitative. Despite low resource availability of light and elevated levels of salinity within the marsh-forest ecotone, plant interactions there reflect a benign stress environment, in which competition is predominant and where resource limitation, stress, and competition have additive, negative effects on plant performance.</div></div>","PeriodicalId":100260,"journal":{"name":"Climate Change Ecology","volume":"9 ","pages":"Article 100095"},"PeriodicalIF":0.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-26DOI: 10.1016/j.ecochg.2025.100094
Harmony A. Martell , Simon D. Donner
Laboratory experiments have long been used to guide predictions of organismal stress in response to the rapidly changing climate. However, the ability to simulate real world conditions in the laboratory can be a barrier to prediction accuracy. We performed a systematic review of experimental coral bleaching literature and assembled a database to identify the methods used to measure bleaching in heating experiments and assess how closely heating experiments resembled marine heatwaves (MHWs) on coral reefs. Observations of the maximum photochemical yield of Photosystem II (FV/FM), though not a direct measure of dysbiosis, vastly outnumbered Symbiodiniaceae density and chlorophyll observations in the reviewed literature, indicating its widespread misuse as a proxy for coral dysbiosis. Laboratory studies in our database used higher maximum temperatures (∼ 0.9 ×), degree heating times (∼ 1.7 ×) and heating rates (∼ 7.3 ×), and shorter durations (∼ 1.5 ×), than MHWs on coral reefs. We then asked whether exposure differences between laboratory experiments and reef conditions altered the relationship between coral dysbiosis and heating metrics using the example of hormesis. We fit curves on the data both with and without ecologically relevant heating metrics and found hormetic curves in some response variables that were altered with the exclusion of exposures that fell outside of the bounds of MHWs on coral reefs, indicating a high likelihood of prediction error. We recommend that laboratory-based studies of coral dysbiosis use ecologically relevant exposures to improve predictions of the physiological response of corals to our rapidly warming oceans.
{"title":"Headwinds to understanding stress response physiology: A systematic review reveals mismatch between real and simulated marine heatwaves on coral reefs","authors":"Harmony A. Martell , Simon D. Donner","doi":"10.1016/j.ecochg.2025.100094","DOIUrl":"10.1016/j.ecochg.2025.100094","url":null,"abstract":"<div><div>Laboratory experiments have long been used to guide predictions of organismal stress in response to the rapidly changing climate. However, the ability to simulate real world conditions in the laboratory can be a barrier to prediction accuracy. We performed a systematic review of experimental coral bleaching literature and assembled a database to identify the methods used to measure bleaching in heating experiments and assess how closely heating experiments resembled marine heatwaves (MHWs) on coral reefs. Observations of the maximum photochemical yield of Photosystem II (<em>F</em><sub>V</sub>/<em>F</em><sub>M</sub>), though not a direct measure of dysbiosis, vastly outnumbered Symbiodiniaceae density and chlorophyll observations in the reviewed literature, indicating its widespread misuse as a proxy for coral dysbiosis. Laboratory studies in our database used higher maximum temperatures (∼ 0.9 ×), degree heating times (∼ 1.7 ×) and heating rates (∼ 7.3 ×), and shorter durations (∼ 1.5 ×), than MHWs on coral reefs. We then asked whether exposure differences between laboratory experiments and reef conditions altered the relationship between coral dysbiosis and heating metrics using the example of hormesis. We fit curves on the data both with and without ecologically relevant heating metrics and found hormetic curves in some response variables that were altered with the exclusion of exposures that fell outside of the bounds of MHWs on coral reefs, indicating a high likelihood of prediction error. We recommend that laboratory-based studies of coral dysbiosis use ecologically relevant exposures to improve predictions of the physiological response of corals to our rapidly warming oceans.</div></div>","PeriodicalId":100260,"journal":{"name":"Climate Change Ecology","volume":"10 ","pages":"Article 100094"},"PeriodicalIF":0.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-20DOI: 10.1016/j.ecochg.2025.100093
Alice C. Hughes
{"title":"A year in review: Environmental policy changes in 2024","authors":"Alice C. Hughes","doi":"10.1016/j.ecochg.2025.100093","DOIUrl":"10.1016/j.ecochg.2025.100093","url":null,"abstract":"","PeriodicalId":100260,"journal":{"name":"Climate Change Ecology","volume":"9 ","pages":"Article 100093"},"PeriodicalIF":0.0,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-15DOI: 10.1016/j.ecochg.2025.100092
Roger Bruce Syngkli, Prabhat Kumar Rai, Lalnuntluanga
Anthropogenic disturbances driven introduction of invasive alien plants (IAP) threatened the native biodiversity and environmental sustainability. IAP induced biotic homogenization can also disrupt ecosystem functioning/-services and socio-economy. Multifaceted threats of IAP can further be exacerbated under the interactive effects of climate change. However, IAP-climate change interaction is insufficiently addressed. Therefore, present review attempts to explicitly elucidate this linkage for cross-sectoral invasion ecology and management research. Changes in climatic variables also facilitated IAP to expand their horizon irrespective of the extreme climate and geographical barriers, which enhanced the vulnerability of protected areas rich in endemics. Moreover, IAP-climate change impacted the forestry/agroforestry systems by restricting abiotic resources and influencing forest regeneration, litter stock, and nutrient cycling. Consequently, IAP-climate change can influence ecological economics, livelihood, and human well-being. Implementation of species distribution model (SDM) into management and mitigation strategies is required to control IAP along with the present and future climate change scenarios.
{"title":"Expanding horizon of invasive alien plants under the interacting effects of global climate change: Multifaceted impacts and management prospects","authors":"Roger Bruce Syngkli, Prabhat Kumar Rai, Lalnuntluanga","doi":"10.1016/j.ecochg.2025.100092","DOIUrl":"10.1016/j.ecochg.2025.100092","url":null,"abstract":"<div><div>Anthropogenic disturbances driven introduction of invasive alien plants (IAP) threatened the native biodiversity and environmental sustainability. IAP induced biotic homogenization can also disrupt ecosystem functioning/-services and socio-economy. Multifaceted threats of IAP can further be exacerbated under the interactive effects of climate change. However, IAP-climate change interaction is insufficiently addressed. Therefore, present review attempts to explicitly elucidate this linkage for cross-sectoral invasion ecology and management research. Changes in climatic variables also facilitated IAP to expand their horizon irrespective of the extreme climate and geographical barriers, which enhanced the vulnerability of protected areas rich in endemics. Moreover, IAP-climate change impacted the forestry/agroforestry systems by restricting abiotic resources and influencing forest regeneration, litter stock, and nutrient cycling. Consequently, IAP-climate change can influence ecological economics, livelihood, and human well-being. Implementation of species distribution model (SDM) into management and mitigation strategies is required to control IAP along with the present and future climate change scenarios.</div></div>","PeriodicalId":100260,"journal":{"name":"Climate Change Ecology","volume":"9 ","pages":"Article 100092"},"PeriodicalIF":0.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-07DOI: 10.1016/j.ecochg.2024.100091
James N. Helferich , Richard B. King , Lisa J. Faust , Sarah J. Baker , Michael J. Dreslik , Kenton Otterbein , Jennifer A. Moore , Doug Wynn , Thomas A. Bell , Robyn L. Bailey , Kristin Wildman , Glenn Johnson , Matthew Kleitch , Karen Cedar , Rori A. Paloski , Jonathan D. Choquette , John M. Adamski , Eric T. Hileman
Ectotherms are particularly vulnerable to climate change because they rely on the surrounding environment for thermoregulation. In snakes, prolonged warmer temperatures and precipitation changes may lead to faster growth and smaller body size. Our goal was to assess how climate change may impact future sizes and growth rates on an endangered pitviper species as a model organism. We hypothesized that climate change-induced shifts in growing season temperature, early growing season precipitation, and snow residence time (SRT) would impact growth rate and asymptotic size in the threatened Eastern Massasauga (Sistrurus catenatus) rattlesnake. We used capture-mark-recapture data from eleven sites across the species’ range to fit a set of non-linear models evaluating the effects of these three climate variables on asymptotic size and growth coefficient in a modified von Bertalanffy growth curve. We found that longer SRT resulted in larger asymptotic size. We also found support for both a negative relationship between SRT and growth rate and a positive relationship between precipitation and growth rate. We averaged all supported models and predicted growth and size in the 2080s under a stabilization (RCP 4.5) and a high (RCP 8.5) emission scenario. Under RCP 8.5, predicted increases in female growth rate ranged from 10 % to 33 %, whereas decreases in female size across sites ranged from 9 % to 17 %. Under this scenario female lifetime reproductive success will decrease, as faster growth is associated with increased mortality, early senescence, and poor offspring quality, and smaller body sizes will result in smaller and fewer young.
{"title":"Projected climate change effects on individual growth rates and size in a threatened pitviper","authors":"James N. Helferich , Richard B. King , Lisa J. Faust , Sarah J. Baker , Michael J. Dreslik , Kenton Otterbein , Jennifer A. Moore , Doug Wynn , Thomas A. Bell , Robyn L. Bailey , Kristin Wildman , Glenn Johnson , Matthew Kleitch , Karen Cedar , Rori A. Paloski , Jonathan D. Choquette , John M. Adamski , Eric T. Hileman","doi":"10.1016/j.ecochg.2024.100091","DOIUrl":"10.1016/j.ecochg.2024.100091","url":null,"abstract":"<div><div>Ectotherms are particularly vulnerable to climate change because they rely on the surrounding environment for thermoregulation. In snakes, prolonged warmer temperatures and precipitation changes may lead to faster growth and smaller body size. Our goal was to assess how climate change may impact future sizes and growth rates on an endangered pitviper species as a model organism. We hypothesized that climate change-induced shifts in growing season temperature, early growing season precipitation, and snow residence time (SRT) would impact growth rate and asymptotic size in the threatened Eastern Massasauga (<em>Sistrurus catenatus</em>) rattlesnake. We used capture-mark-recapture data from eleven sites across the species’ range to fit a set of non-linear models evaluating the effects of these three climate variables on asymptotic size and growth coefficient in a modified von Bertalanffy growth curve. We found that longer SRT resulted in larger asymptotic size. We also found support for both a negative relationship between SRT and growth rate and a positive relationship between precipitation and growth rate. We averaged all supported models and predicted growth and size in the 2080s under a stabilization (RCP 4.5) and a high (RCP 8.5) emission scenario. Under RCP 8.5, predicted increases in female growth rate ranged from 10 % to 33 %, whereas decreases in female size across sites ranged from 9 % to 17 %. Under this scenario female lifetime reproductive success will decrease, as faster growth is associated with increased mortality, early senescence, and poor offspring quality, and smaller body sizes will result in smaller and fewer young.</div></div>","PeriodicalId":100260,"journal":{"name":"Climate Change Ecology","volume":"9 ","pages":"Article 100091"},"PeriodicalIF":0.0,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-01DOI: 10.1016/j.ecochg.2024.100090
Jennifer M. Sneed , Justin E. Campbell , Audrey Looby , Aurora Giorgi , Valerie J. Paul
Coral recruitment is critical to the maintenance of healthy coral reef ecosystems. Many coral species settle preferentially on certain crustose coralline algae (CCA) (e.g., Hydrolithon boergesenii) over others (e.g., Paragoniolithon solubile). Calcifying organisms like CCA are particularly susceptible to ocean acidification (OA), and settlement behavior of larvae may be compromised as seawater temperatures increase (ocean warming; OW) and pH levels decrease as a result of climate change. Here, we examine the effects of future seawater conditions (OW and OA) on the calcification and photosynthetic efficiency of two CCA species, H. boergesenii and Pa. solubile. We also examine the effects of conditioning CCA in combined OA and OW on the settlement preferences of three coral species, Acropora palmata, A. cervicornis and Porites astreoides. Acropora palmata and Po. astreoides demonstrated a preference for H. boergesenii over Pa. solubile in choice experiments after short-term treatment (7–21 days) and this preference was not affected by future seawater conditions. A. cervicornis did not demonstrate a CCA preference under any treatment. Po. astreoides did not demonstrate a CCA preference in no-choice assays and settlement was unaffected by OW and OA even after the longest exposure (99 days). Both CCA had reduced photosynthetic efficiency after exposure to future seawater conditions. However, net calcification rate was reduced in H. boergesenii but not Pa. solubile after exposure to future seawater conditions. These results demonstrate that while climate change may differentially affect the physiological functioning of various species of CCA, coral settlement preferences are unlikely to be altered.
珊瑚的补充对维持健康的珊瑚礁生态系统至关重要。许多珊瑚物种优先于某些甲壳珊瑚藻(CCA)(例如,水螅)而不是其他(例如,可溶水螅)。像CCA这样的钙化生物特别容易受到海洋酸化(OA)的影响,随着海水温度的升高,幼虫的沉降行为可能会受到损害(海洋变暖;(OW)和pH值由于气候变化而下降。在这里,我们研究了未来海水条件(OW和OA)对两种CCA物种H. boergesenii和Pa.的钙化和光合效率的影响。solubile。我们还研究了复合OA和OW条件下CCA对三种珊瑚(Acropora palmata, A. cervicornis和Porites astreoides)定居偏好的影响。掌角蕨和蒲公英。小行星对博格氏芽孢杆菌的偏好高于对帕氏芽孢杆菌。在短期处理(7-21天)后的选择实验中,这种偏好不受未来海水条件的影响。在任何处理下,颈鸟均未表现出CCA偏好。阿宝。在无选择试验中,小行星没有表现出CCA偏好,即使在暴露时间最长(99天)后,OW和OA也不影响沉降。暴露于未来海水条件后,两种CCA都降低了光合效率。然而,净钙化率在boergesenii中降低,而在Pa中没有。暴露于未来海水条件后可溶解。这些结果表明,虽然气候变化可能会不同程度地影响各种CCA物种的生理功能,但珊瑚的定居偏好不太可能改变。
{"title":"Varying effects of climate change on the photosynthesis and calcification of crustose coralline algae: Implications for settlement of coral larvae","authors":"Jennifer M. Sneed , Justin E. Campbell , Audrey Looby , Aurora Giorgi , Valerie J. Paul","doi":"10.1016/j.ecochg.2024.100090","DOIUrl":"10.1016/j.ecochg.2024.100090","url":null,"abstract":"<div><div>Coral recruitment is critical to the maintenance of healthy coral reef ecosystems. Many coral species settle preferentially on certain crustose coralline algae (CCA) (e.g., <em>Hydrolithon boergesenii</em>) over others (e.g., <em>Paragoniolithon solubile</em>). Calcifying organisms like CCA are particularly susceptible to ocean acidification (OA), and settlement behavior of larvae may be compromised as seawater temperatures increase (ocean warming; OW) and pH levels decrease as a result of climate change. Here, we examine the effects of future seawater conditions (OW and OA) on the calcification and photosynthetic efficiency of two CCA species, <em>H. boergesenii</em> and <em>Pa. solubile</em>. We also examine the effects of conditioning CCA in combined OA and OW on the settlement preferences of three coral species, <em>Acropora palmata, A. cervicornis</em> and <em>Porites astreoides. Acropora palmata</em> and <em>Po. astreoides</em> demonstrated a preference for <em>H. boergesenii</em> over <em>Pa. solubile</em> in choice experiments after short-term treatment (7–21 days) and this preference was not affected by future seawater conditions. <em>A. cervicornis</em> did not demonstrate a CCA preference under any treatment. <em>Po. astreoides</em> did not demonstrate a CCA preference in no-choice assays and settlement was unaffected by OW and OA even after the longest exposure (99 days). Both CCA had reduced photosynthetic efficiency after exposure to future seawater conditions. However, net calcification rate was reduced in <em>H. boergesenii</em> but not <em>Pa. solubile</em> after exposure to future seawater conditions. These results demonstrate that while climate change may differentially affect the physiological functioning of various species of CCA, coral settlement preferences are unlikely to be altered.</div></div>","PeriodicalId":100260,"journal":{"name":"Climate Change Ecology","volume":"9 ","pages":"Article 100090"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Potential natural vegetations are crucial for forest research, management, and monitoring, especially considering their evolution amidst climate change. In Quebec (Canada), these vegetations were defined in the 2000s but haven't been updated since then. Originally, stability in their composition and dynamics relied on unchanged climate, soil characteristics, and disturbance regimes. However, in the southwestern part of Quebec forests, we have enhanced the description of potential natural vegetations using diagnostic species, based on their indicator values and relative abundance. This improvement prompts a reevaluation of these vegetations, particularly at the transition between temperate and boreal forests, considering climate change. Our study, using tree habitat suitability models, reveals that even under a moderately warming scenario (2041–2070 RCP 4.5 W m−2), diagnostic coniferous and boreal hardwood species face habitat suitability declines but the current classification remains adequate. However, a more severe warming scenario (2071–2100 RCP 8.5 W m−2) results in significant habitat unsuitability for these diagnostic species, questioning the relevance of the current classification at the ecotone. Given the crucial tool of potential natural vegetations in forest management, updating their classification becomes imperative to guide forestry practices' adaptation to climate change.
潜在的自然植被对森林研究、管理和监测至关重要,尤其是考虑到它们在气候变化中的演变。在加拿大魁北克省,这些植被在 2000 年代被定义,但此后一直没有更新。最初,其组成和动态的稳定性依赖于不变的气候、土壤特性和干扰机制。然而,在魁北克森林的西南部,我们利用诊断物种,根据其指标值和相对丰度,加强了对潜在自然植被的描述。考虑到气候变化,这一改进促使我们对这些植被进行重新评估,尤其是在温带森林和北方森林之间的过渡地带。我们利用树木生境适宜性模型进行的研究表明,即使在中度变暖的情况下(2041-2070 RCP 4.5 W m-2),针叶树和北方硬木树种的诊断性生境适宜性也会下降,但目前的分类仍然足够。然而,更严重的气候变暖情景(2071-2100 RCP 8.5 W m-2)会导致这些诊断性物种的栖息地严重不适宜,从而对生态区域当前分类的相关性提出质疑。鉴于潜在自然植被在森林管理中的重要作用,更新其分类已成为指导林业实践适应气候变化的当务之急。
{"title":"Anticipated impacts in habitat of diagnostic species of potential natural vegetations due to climate change at the ecotone between temperate and boreal forests","authors":"Aurélie Chalumeau , Yves Bergeron , Mathieu Bouchard , Pierre Grondin , Marie-Claude Lambert , Catherine Périé","doi":"10.1016/j.ecochg.2024.100089","DOIUrl":"10.1016/j.ecochg.2024.100089","url":null,"abstract":"<div><div>Potential natural vegetations are crucial for forest research, management, and monitoring, especially considering their evolution amidst climate change. In Quebec (Canada), these vegetations were defined in the 2000s but haven't been updated since then. Originally, stability in their composition and dynamics relied on unchanged climate, soil characteristics, and disturbance regimes. However, in the southwestern part of Quebec forests, we have enhanced the description of potential natural vegetations using diagnostic species, based on their indicator values and relative abundance. This improvement prompts a reevaluation of these vegetations, particularly at the transition between temperate and boreal forests, considering climate change. Our study, using tree habitat suitability models, reveals that even under a moderately warming scenario (2041–2070 RCP 4.5 W m<sup>−2</sup>), diagnostic coniferous and boreal hardwood species face habitat suitability declines but the current classification remains adequate. However, a more severe warming scenario (2071–2100 RCP 8.5 W m<sup>−2</sup>) results in significant habitat unsuitability for these diagnostic species, questioning the relevance of the current classification at the ecotone. Given the crucial tool of potential natural vegetations in forest management, updating their classification becomes imperative to guide forestry practices' adaptation to climate change.</div></div>","PeriodicalId":100260,"journal":{"name":"Climate Change Ecology","volume":"8 ","pages":"Article 100089"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142702152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-24DOI: 10.1016/j.ecochg.2024.100088
Oluwafemi A Alaba , Sofiane Bechami , Yu-Ying Chen , Tawanda W Gara , Brian Perkins , Yong-Jiang Zhang
Anthropogenic climate change may affect the nutritional quality of perennial crops. Wild blueberry is a perennial crop of cultural and economic importance and known for its health-promoting properties. Wild blueberry fields in Maine, USA are experiencing unprecedented warming, which may affect the quality and marketability of the fruit. We examined the biochemistry of wild blueberries grown under active open-top heating that elevated temperatures by 3.3 °C, passive open-top heating by 1.2 °C, and ambient conditions (control). We found that total soluble solids, fructose, total soluble sugars and total soluble protein decreased as temperatures increased. In contrast, anthocyanin, total flavonoid and phenolics were not affected. Additionally, warming weakened the correlation between sugars, total soluble solids, and other components. Our results suggest that future global warming may reduce the nutritional value and marketability of wild blueberries. Potential mitigation techniques will need to be developed for future production.
{"title":"Will global warming reduce the nutritional quality of wild blueberries?","authors":"Oluwafemi A Alaba , Sofiane Bechami , Yu-Ying Chen , Tawanda W Gara , Brian Perkins , Yong-Jiang Zhang","doi":"10.1016/j.ecochg.2024.100088","DOIUrl":"10.1016/j.ecochg.2024.100088","url":null,"abstract":"<div><p>Anthropogenic climate change may affect the nutritional quality of perennial crops. Wild blueberry is a perennial crop of cultural and economic importance and known for its health-promoting properties. Wild blueberry fields in Maine, USA are experiencing unprecedented warming, which may affect the quality and marketability of the fruit. We examined the biochemistry of wild blueberries grown under active open-top heating that elevated temperatures by 3.3 °C, passive open-top heating by 1.2 °C, and ambient conditions (control). We found that total soluble solids, fructose, total soluble sugars and total soluble protein decreased as temperatures increased. In contrast, anthocyanin, total flavonoid and phenolics were not affected. Additionally, warming weakened the correlation between sugars, total soluble solids, and other components. Our results suggest that future global warming may reduce the nutritional value and marketability of wild blueberries. Potential mitigation techniques will need to be developed for future production.</p></div>","PeriodicalId":100260,"journal":{"name":"Climate Change Ecology","volume":"8 ","pages":"Article 100088"},"PeriodicalIF":0.0,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666900524000066/pdfft?md5=1a0ff0401fa3667bfba41c56557e779b&pid=1-s2.0-S2666900524000066-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142094846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}