J. C. White, E. Seddon, M. J. Hill, K. L. Mathers, M. Bridger, D. M. Hannah, P. J. Wood
{"title":"查阅档案:将古生态学数据与当代数据相结合,为河流修复评估提供支持","authors":"J. C. White, E. Seddon, M. J. Hill, K. L. Mathers, M. Bridger, D. M. Hannah, P. J. Wood","doi":"10.1002/rra.4366","DOIUrl":null,"url":null,"abstract":"River restoration practices are being increasingly implemented to help offset the global degradation of freshwater ecosystems. The ecological success of such projects is typically determined via post‐project appraisals comparing restored conditions against specified baselines (e.g., pre‐project and/or non‐restored data), but such approaches can overlook broader ecosystem recovery patterns. Using freshwater macroinvertebrate communities, this study examined ecological responses to river restoration that are seldom assessed: (i) sub‐annual temporal trajectories and (ii) palaeoecological versus contemporary community comparisons. Palaeoecological samples contained assemblages that existed prior to major anthropogenic pressures, which were collected from a sinuous palaeochannel that was restored and reconnected during the study; after which contemporary macroinvertebrate samples were collected. The restored channel initially supported an impoverished community, but taxonomic richness and densities were comparable to non‐restored conditions after 13‐months. The freshwater shrimp (<jats:italic>Gammarus pulex</jats:italic>) and non‐native New Zealand mud snail (<jats:italic>Potamopyrgus antipodarum</jats:italic>) proliferated 7‐months post‐restoration, and follow‐up biomonitoring highlighted their dominance prevailed 5‐years later. Such evidence indicates how ecosystem dynamics in the aftermath of restoration can shape longer‐term recovery. Palaeoecological communities exhibited higher biodiversity and conservation values compared with contemporary samples. This highlights that escalating anthropogenic pressures since the mid‐20th Century degraded macroinvertebrate communities, notably constraining marginal‐dwelling and lentic specialists. With palaeochannel reconnections being widely applied worldwide, this study demonstrates the value in collecting palaeoecological data before restoration works to provide valuable baseline information. As the global anthropogenic footprint increasingly degrades suitable “reference” river environments, palaeoecological data can better characterize biodiversity losses and potentially provide target conditions informing effective restoration activities.","PeriodicalId":21513,"journal":{"name":"River Research and Applications","volume":"57 1","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Going to the archives: Combining palaeoecological and contemporary data to support river restoration appraisals\",\"authors\":\"J. C. White, E. Seddon, M. J. Hill, K. L. Mathers, M. Bridger, D. M. Hannah, P. J. Wood\",\"doi\":\"10.1002/rra.4366\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"River restoration practices are being increasingly implemented to help offset the global degradation of freshwater ecosystems. The ecological success of such projects is typically determined via post‐project appraisals comparing restored conditions against specified baselines (e.g., pre‐project and/or non‐restored data), but such approaches can overlook broader ecosystem recovery patterns. Using freshwater macroinvertebrate communities, this study examined ecological responses to river restoration that are seldom assessed: (i) sub‐annual temporal trajectories and (ii) palaeoecological versus contemporary community comparisons. Palaeoecological samples contained assemblages that existed prior to major anthropogenic pressures, which were collected from a sinuous palaeochannel that was restored and reconnected during the study; after which contemporary macroinvertebrate samples were collected. The restored channel initially supported an impoverished community, but taxonomic richness and densities were comparable to non‐restored conditions after 13‐months. The freshwater shrimp (<jats:italic>Gammarus pulex</jats:italic>) and non‐native New Zealand mud snail (<jats:italic>Potamopyrgus antipodarum</jats:italic>) proliferated 7‐months post‐restoration, and follow‐up biomonitoring highlighted their dominance prevailed 5‐years later. Such evidence indicates how ecosystem dynamics in the aftermath of restoration can shape longer‐term recovery. Palaeoecological communities exhibited higher biodiversity and conservation values compared with contemporary samples. This highlights that escalating anthropogenic pressures since the mid‐20th Century degraded macroinvertebrate communities, notably constraining marginal‐dwelling and lentic specialists. With palaeochannel reconnections being widely applied worldwide, this study demonstrates the value in collecting palaeoecological data before restoration works to provide valuable baseline information. As the global anthropogenic footprint increasingly degrades suitable “reference” river environments, palaeoecological data can better characterize biodiversity losses and potentially provide target conditions informing effective restoration activities.\",\"PeriodicalId\":21513,\"journal\":{\"name\":\"River Research and Applications\",\"volume\":\"57 1\",\"pages\":\"\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"River Research and Applications\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.1002/rra.4366\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"River Research and Applications","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1002/rra.4366","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Going to the archives: Combining palaeoecological and contemporary data to support river restoration appraisals
River restoration practices are being increasingly implemented to help offset the global degradation of freshwater ecosystems. The ecological success of such projects is typically determined via post‐project appraisals comparing restored conditions against specified baselines (e.g., pre‐project and/or non‐restored data), but such approaches can overlook broader ecosystem recovery patterns. Using freshwater macroinvertebrate communities, this study examined ecological responses to river restoration that are seldom assessed: (i) sub‐annual temporal trajectories and (ii) palaeoecological versus contemporary community comparisons. Palaeoecological samples contained assemblages that existed prior to major anthropogenic pressures, which were collected from a sinuous palaeochannel that was restored and reconnected during the study; after which contemporary macroinvertebrate samples were collected. The restored channel initially supported an impoverished community, but taxonomic richness and densities were comparable to non‐restored conditions after 13‐months. The freshwater shrimp (Gammarus pulex) and non‐native New Zealand mud snail (Potamopyrgus antipodarum) proliferated 7‐months post‐restoration, and follow‐up biomonitoring highlighted their dominance prevailed 5‐years later. Such evidence indicates how ecosystem dynamics in the aftermath of restoration can shape longer‐term recovery. Palaeoecological communities exhibited higher biodiversity and conservation values compared with contemporary samples. This highlights that escalating anthropogenic pressures since the mid‐20th Century degraded macroinvertebrate communities, notably constraining marginal‐dwelling and lentic specialists. With palaeochannel reconnections being widely applied worldwide, this study demonstrates the value in collecting palaeoecological data before restoration works to provide valuable baseline information. As the global anthropogenic footprint increasingly degrades suitable “reference” river environments, palaeoecological data can better characterize biodiversity losses and potentially provide target conditions informing effective restoration activities.
期刊介绍:
River Research and Applications , previously published as Regulated Rivers: Research and Management (1987-2001), is an international journal dedicated to the promotion of basic and applied scientific research on rivers. The journal publishes original scientific and technical papers on biological, ecological, geomorphological, hydrological, engineering and geographical aspects related to rivers in both the developed and developing world. Papers showing how basic studies and new science can be of use in applied problems associated with river management, regulation and restoration are encouraged as is interdisciplinary research concerned directly or indirectly with river management problems.