Climate Change Ecology最新文献

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Climate Change Ecology

Pub Date : 2025-01-01

引用次数: 0

Climate Change Ecology

Pub Date : 2025-01-01

引用次数: 0

Climate Change Ecology

Pub Date : 2025-01-01

引用次数: 0

Climate Change Ecology

Pub Date : 2025-01-01

引用次数: 0

Climate Change Ecology

Pub Date : 2025-01-01

引用次数: 0

Climate Change Ecology

Pub Date : 2025-01-01

引用次数: 0

Projected climate change effects on individual growth rates and size in a threatened pitviper 预测气候变化对濒危pitviper个体生长速度和大小的影响

Climate Change Ecology

Pub Date : 2024-12-07 DOI: 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.

变温动物特别容易受到气候变化的影响，因为它们依靠周围环境来调节体温。对于蛇来说，长时间的高温和降水变化可能会导致它们生长得更快，体型更小。我们的目标是评估气候变化如何影响作为模式生物的濒危pitviper物种的未来大小和生长速度。我们假设气候变化引起的生长季节温度、生长早期降水和雪停留时间（SRT）的变化会影响受威胁的东部马萨索加（Sistrurus catenatus）响尾蛇的生长速度和渐近大小。我们使用来自11个物种范围的捕获-标记-再捕获数据来拟合一组非线性模型，以评估这三个气候变量对改进的von Bertalanffy生长曲线的渐近大小和生长系数的影响。我们发现，较长的SRT导致较大的渐近大小。我们还发现SRT与生长率呈负相关，而降水与生长率呈正相关。我们对所有支持的模型进行了平均，并预测了2080年代在稳定（RCP 4.5）和高（RCP 8.5）排放情景下的增长和规模。在RCP 8.5条件下，预测雌鱼的生长速度在10%到33%之间，而雌鱼大小在9%到17%之间。在这种情况下，女性一生的生殖成功率将降低，因为更快的生长与死亡率增加、早期衰老和后代质量差有关，而较小的体型将导致更小、更少的后代。

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引用次数: 0

Varying effects of climate change on the photosynthesis and calcification of crustose coralline algae: Implications for settlement of coral larvae 气候变化对珊瑚藻光合作用和钙化的不同影响：对珊瑚幼虫定居的影响

Climate Change Ecology

Pub Date : 2024-12-01 DOI: 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。

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Anticipated impacts in habitat of diagnostic species of potential natural vegetations due to climate change at the ecotone between temperate and boreal forests 温带森林和北方森林生态区气候变化对潜在天然植被诊断物种栖息地的预期影响

Climate Change Ecology

Pub Date : 2024-11-01 DOI: 10.1016/j.ecochg.2024.100089

Aurélie Chalumeau , Yves Bergeron , Mathieu Bouchard , Pierre Grondin , Marie-Claude Lambert , Catherine Périé

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。

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引用次数: 0

Will global warming reduce the nutritional quality of wild blueberries? 全球变暖会降低野生蓝莓的营养质量吗？

Climate Change Ecology

Pub Date : 2024-08-24 DOI: 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.

人为气候变化可能会影响多年生作物的营养质量。野生蓝莓是一种具有重要文化和经济价值的多年生作物，以其促进健康的特性而闻名。美国缅因州的野生蓝莓田正在经历前所未有的变暖，这可能会影响果实的质量和销路。我们研究了在温度升高 3.3 ℃ 的主动敞篷加热、1.2 ℃ 的被动敞篷加热和环境条件（对照）下生长的野生蓝莓的生物化学特性。我们发现，总可溶性固形物、果糖、总可溶性糖和总可溶性蛋白质随着温度的升高而减少。相比之下，花青素、总黄酮和酚类物质则不受影响。此外，气候变暖削弱了糖、总可溶性固形物和其他成分之间的相关性。我们的研究结果表明，未来全球变暖可能会降低野生蓝莓的营养价值和适销性。需要为未来的生产开发潜在的缓解技术。

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