偏远生物多样性热点地区海洋森林面对中度逐渐变暖的长期稳定性

IF 4.6 2区 环境科学与生态学 Q1 BIODIVERSITY CONSERVATION
Albert Pessarrodona, Georgina Wood, Camille M. Grimaldi, Nisse Goldberg, Gary A. Kendrick, Samuel Starko, Thomas Wernberg
{"title":"偏远生物多样性热点地区海洋森林面对中度逐渐变暖的长期稳定性","authors":"Albert Pessarrodona,&nbsp;Georgina Wood,&nbsp;Camille M. Grimaldi,&nbsp;Nisse Goldberg,&nbsp;Gary A. Kendrick,&nbsp;Samuel Starko,&nbsp;Thomas Wernberg","doi":"10.1111/ddi.13933","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Aim</h3>\n \n <p>Ocean warming and marine heatwaves are rapidly reconfiguring the composition of seaweed forests—the world's largest coastal vegetated biome. Seaweed forest responses to climate change in remote locations, which constitute the majority of the forest biome, remain however poorly quantified. Here, we examine the temporal stability of the seaweed forests across a global seaweed biodiversity hotspot where several species are predicted to undergo severe range contractions in this century.</p>\n </section>\n \n <section>\n \n <h3> Location</h3>\n \n <p>Western south coast of Australia.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>Seaweed forest canopies were censused at 18 shallow (&lt; 10 m) sheltered reefs between 1997 and 2006 and again between 2021 and 2024 (six sites per location). We also surveyed 24 sites to examine whether temporal changes differed over gradients of wave exposure and depth.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>Seaweed forest canopies across all locations showed surprisingly little change in biomass, cover, stand density and species composition over two decades, with strong spatial structuring across depth and exposure gradients persisting over time. The average thermal affinity of forest canopies (i.e., the community temperature index, CTI) did not track warming, suggesting that factors other than temperature (e.g., wave exposure and depth) are more important drivers of forest stand structure and/or that key thermal thresholds have not yet been crossed. Forests in the location with the most pronounced warming exhibited increased thermal bias over time (total bias of 0.8°C–2.2°C), indicating they were dominated by species with cooler affinities than their local temperatures.</p>\n </section>\n \n <section>\n \n <h3> Main Conclusions</h3>\n \n <p>The greater thermal bias in forests at the warmer edge of southern Australia suggests these will be more susceptible to future warming-related compositional changes than forests in cooler locations. The relative stability we found contrasts with a current context of rapidly changing seaweed forests nationally and globally, highlighting the need to deepen our ecological understanding of the region so that future changes to its unique biodiversity and ecosystem services can be predicted and mitigated.</p>\n </section>\n </div>","PeriodicalId":51018,"journal":{"name":"Diversity and Distributions","volume":"30 11","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ddi.13933","citationCount":"0","resultStr":"{\"title\":\"Long-Term Stability of Marine Forests Facing Moderate Gradual Warming in a Remote Biodiversity Hotspot\",\"authors\":\"Albert Pessarrodona,&nbsp;Georgina Wood,&nbsp;Camille M. Grimaldi,&nbsp;Nisse Goldberg,&nbsp;Gary A. Kendrick,&nbsp;Samuel Starko,&nbsp;Thomas Wernberg\",\"doi\":\"10.1111/ddi.13933\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> Aim</h3>\\n \\n <p>Ocean warming and marine heatwaves are rapidly reconfiguring the composition of seaweed forests—the world's largest coastal vegetated biome. Seaweed forest responses to climate change in remote locations, which constitute the majority of the forest biome, remain however poorly quantified. Here, we examine the temporal stability of the seaweed forests across a global seaweed biodiversity hotspot where several species are predicted to undergo severe range contractions in this century.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Location</h3>\\n \\n <p>Western south coast of Australia.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Methods</h3>\\n \\n <p>Seaweed forest canopies were censused at 18 shallow (&lt; 10 m) sheltered reefs between 1997 and 2006 and again between 2021 and 2024 (six sites per location). We also surveyed 24 sites to examine whether temporal changes differed over gradients of wave exposure and depth.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Results</h3>\\n \\n <p>Seaweed forest canopies across all locations showed surprisingly little change in biomass, cover, stand density and species composition over two decades, with strong spatial structuring across depth and exposure gradients persisting over time. The average thermal affinity of forest canopies (i.e., the community temperature index, CTI) did not track warming, suggesting that factors other than temperature (e.g., wave exposure and depth) are more important drivers of forest stand structure and/or that key thermal thresholds have not yet been crossed. Forests in the location with the most pronounced warming exhibited increased thermal bias over time (total bias of 0.8°C–2.2°C), indicating they were dominated by species with cooler affinities than their local temperatures.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Main Conclusions</h3>\\n \\n <p>The greater thermal bias in forests at the warmer edge of southern Australia suggests these will be more susceptible to future warming-related compositional changes than forests in cooler locations. The relative stability we found contrasts with a current context of rapidly changing seaweed forests nationally and globally, highlighting the need to deepen our ecological understanding of the region so that future changes to its unique biodiversity and ecosystem services can be predicted and mitigated.</p>\\n </section>\\n </div>\",\"PeriodicalId\":51018,\"journal\":{\"name\":\"Diversity and Distributions\",\"volume\":\"30 11\",\"pages\":\"\"},\"PeriodicalIF\":4.6000,\"publicationDate\":\"2024-10-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ddi.13933\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Diversity and Distributions\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/ddi.13933\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"BIODIVERSITY CONSERVATION\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Diversity and Distributions","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ddi.13933","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIODIVERSITY CONSERVATION","Score":null,"Total":0}
引用次数: 0

摘要

目的 海洋变暖和海洋热浪正在迅速改变海藻林--世界上最大的沿海植被生物群落--的组成。然而,构成森林生物群落大部分的偏远地区的海藻林对气候变化的反应仍然很少被量化。在这里,我们研究了全球海藻生物多样性热点地区海藻林的时间稳定性,据预测,本世纪该热点地区的一些物种将出现严重的分布范围缩小。 地点 澳大利亚南部西海岸。 方法 1997年至2006年间以及2021年至2024年间,在18个浅礁(< 10米)的遮蔽礁上对海藻林树冠进行了普查(每个地点6个地点)。我们还调查了 24 个地点,以研究时间变化是否随海浪暴露梯度和深度而不同。 结果 所有地点的海藻林冠在生物量、覆盖率、林分密度和物种组成方面在二十年间的变化之小令人惊讶,不同深度和暴露梯度的空间结构随着时间的推移持续存在。林冠的平均热亲和力(即群落温度指数 CTI)并没有跟踪气候变暖,这表明温度以外的因素(如波浪暴露和深度)是林分结构更重要的驱动因素,并且/或者关键的热阈值尚未跨越。随着时间的推移,气候变暖最明显地区的森林表现出更大的热偏差(总偏差为 0.8°C-2.2°C),这表明这些森林主要由亲缘温度低于当地温度的物种所占据。 主要结论 澳大利亚南部较暖边缘的森林热偏差较大,这表明与较冷地区的森林相比,这些森林未来更容易受到与气候变暖相关的成分变化的影响。我们发现的相对稳定性与当前全国和全球海藻森林迅速变化的背景形成了鲜明对比,这突出表明我们有必要加深对该地区生态的了解,以便预测和缓解其独特的生物多样性和生态系统服务的未来变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Long-Term Stability of Marine Forests Facing Moderate Gradual Warming in a Remote Biodiversity Hotspot

Long-Term Stability of Marine Forests Facing Moderate Gradual Warming in a Remote Biodiversity Hotspot

Aim

Ocean warming and marine heatwaves are rapidly reconfiguring the composition of seaweed forests—the world's largest coastal vegetated biome. Seaweed forest responses to climate change in remote locations, which constitute the majority of the forest biome, remain however poorly quantified. Here, we examine the temporal stability of the seaweed forests across a global seaweed biodiversity hotspot where several species are predicted to undergo severe range contractions in this century.

Location

Western south coast of Australia.

Methods

Seaweed forest canopies were censused at 18 shallow (< 10 m) sheltered reefs between 1997 and 2006 and again between 2021 and 2024 (six sites per location). We also surveyed 24 sites to examine whether temporal changes differed over gradients of wave exposure and depth.

Results

Seaweed forest canopies across all locations showed surprisingly little change in biomass, cover, stand density and species composition over two decades, with strong spatial structuring across depth and exposure gradients persisting over time. The average thermal affinity of forest canopies (i.e., the community temperature index, CTI) did not track warming, suggesting that factors other than temperature (e.g., wave exposure and depth) are more important drivers of forest stand structure and/or that key thermal thresholds have not yet been crossed. Forests in the location with the most pronounced warming exhibited increased thermal bias over time (total bias of 0.8°C–2.2°C), indicating they were dominated by species with cooler affinities than their local temperatures.

Main Conclusions

The greater thermal bias in forests at the warmer edge of southern Australia suggests these will be more susceptible to future warming-related compositional changes than forests in cooler locations. The relative stability we found contrasts with a current context of rapidly changing seaweed forests nationally and globally, highlighting the need to deepen our ecological understanding of the region so that future changes to its unique biodiversity and ecosystem services can be predicted and mitigated.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Diversity and Distributions
Diversity and Distributions 环境科学-生态学
CiteScore
8.90
自引率
4.30%
发文量
195
审稿时长
8-16 weeks
期刊介绍: Diversity and Distributions is a journal of conservation biogeography. We publish papers that deal with the application of biogeographical principles, theories, and analyses (being those concerned with the distributional dynamics of taxa and assemblages) to problems concerning the conservation of biodiversity. We no longer consider papers the sole aim of which is to describe or analyze patterns of biodiversity or to elucidate processes that generate biodiversity.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信