L. Concostrina‐Zubiri, J. M. Arenas, I. Martínez, A. Escudero
{"title":"旱地道路斜坡生物土壤结皮的无辅助建立","authors":"L. Concostrina‐Zubiri, J. M. Arenas, I. Martínez, A. Escudero","doi":"10.5194/WE-19-39-2019","DOIUrl":null,"url":null,"abstract":"Abstract. Understanding patterns of habitat natural recovery after\nhuman-made disturbances is critical for the conservation of ecosystems under\nhigh environmental stress, such as drylands. In particular, the unassisted\nestablishment of nonvascular plants such as biological soil crusts or\nbiocrust communities (e.g., soil lichens, mosses and cyanobacteria) in newly\nformed habitats is not yet fully understood. However, the potential of\nbiocrusts to improve soil structure and function at the early stages of\nsuccession and promote ecosystem recovery is enormous. In this study, we\nevaluated the capacity of lichen biocrusts to spontaneously establish and\ndevelop on road slopes in a Mediterranean shrubland. We also compared\ntaxonomic and functional diversity of biocrusts between road slopes and\nnatural habitats in the surroundings. Biocrust richness and cover, species\ncomposition, and functional structure were measured in 17 road slopes (nine\nroadcuts and eight embankments) along a 13 km highway stretch. Topography, soil\nproperties and vascular plant communities of road slopes were also\ncharacterized. We used Kruskal–Wallis tests and applied redundancy analysis\n(RDA) to test the effect of environmental scenario (road slopes vs. natural\nhabitat) and other local factors on biocrust features. We found that\nbiocrusts were common in road slopes after ∼20 years of\nconstruction with no human assistance needed. However, species richness and\ncover were still lower than in natural remnants. Also, functional structure\nwas quite similar between roadcuts (i.e., after soil excavation) and natural\nremnants, and topography and soil properties influenced species composition\nwhile environmental scenario type and vascular plant cover did not. These\nfindings further support the idea of biocrusts as promising restoration\ntools in drylands and confirm the critical role of edaphic factors in\nbiocrust establishment and development in land-use change scenarios.\n","PeriodicalId":54320,"journal":{"name":"Web Ecology","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2019-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"12","resultStr":"{\"title\":\"Unassisted establishment of biological soil crusts on dryland road slopes\",\"authors\":\"L. Concostrina‐Zubiri, J. M. Arenas, I. Martínez, A. Escudero\",\"doi\":\"10.5194/WE-19-39-2019\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract. Understanding patterns of habitat natural recovery after\\nhuman-made disturbances is critical for the conservation of ecosystems under\\nhigh environmental stress, such as drylands. In particular, the unassisted\\nestablishment of nonvascular plants such as biological soil crusts or\\nbiocrust communities (e.g., soil lichens, mosses and cyanobacteria) in newly\\nformed habitats is not yet fully understood. However, the potential of\\nbiocrusts to improve soil structure and function at the early stages of\\nsuccession and promote ecosystem recovery is enormous. In this study, we\\nevaluated the capacity of lichen biocrusts to spontaneously establish and\\ndevelop on road slopes in a Mediterranean shrubland. We also compared\\ntaxonomic and functional diversity of biocrusts between road slopes and\\nnatural habitats in the surroundings. Biocrust richness and cover, species\\ncomposition, and functional structure were measured in 17 road slopes (nine\\nroadcuts and eight embankments) along a 13 km highway stretch. Topography, soil\\nproperties and vascular plant communities of road slopes were also\\ncharacterized. We used Kruskal–Wallis tests and applied redundancy analysis\\n(RDA) to test the effect of environmental scenario (road slopes vs. natural\\nhabitat) and other local factors on biocrust features. We found that\\nbiocrusts were common in road slopes after ∼20 years of\\nconstruction with no human assistance needed. However, species richness and\\ncover were still lower than in natural remnants. Also, functional structure\\nwas quite similar between roadcuts (i.e., after soil excavation) and natural\\nremnants, and topography and soil properties influenced species composition\\nwhile environmental scenario type and vascular plant cover did not. 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Unassisted establishment of biological soil crusts on dryland road slopes
Abstract. Understanding patterns of habitat natural recovery after
human-made disturbances is critical for the conservation of ecosystems under
high environmental stress, such as drylands. In particular, the unassisted
establishment of nonvascular plants such as biological soil crusts or
biocrust communities (e.g., soil lichens, mosses and cyanobacteria) in newly
formed habitats is not yet fully understood. However, the potential of
biocrusts to improve soil structure and function at the early stages of
succession and promote ecosystem recovery is enormous. In this study, we
evaluated the capacity of lichen biocrusts to spontaneously establish and
develop on road slopes in a Mediterranean shrubland. We also compared
taxonomic and functional diversity of biocrusts between road slopes and
natural habitats in the surroundings. Biocrust richness and cover, species
composition, and functional structure were measured in 17 road slopes (nine
roadcuts and eight embankments) along a 13 km highway stretch. Topography, soil
properties and vascular plant communities of road slopes were also
characterized. We used Kruskal–Wallis tests and applied redundancy analysis
(RDA) to test the effect of environmental scenario (road slopes vs. natural
habitat) and other local factors on biocrust features. We found that
biocrusts were common in road slopes after ∼20 years of
construction with no human assistance needed. However, species richness and
cover were still lower than in natural remnants. Also, functional structure
was quite similar between roadcuts (i.e., after soil excavation) and natural
remnants, and topography and soil properties influenced species composition
while environmental scenario type and vascular plant cover did not. These
findings further support the idea of biocrusts as promising restoration
tools in drylands and confirm the critical role of edaphic factors in
biocrust establishment and development in land-use change scenarios.
Web EcologyAgricultural and Biological Sciences-Ecology, Evolution, Behavior and Systematics
CiteScore
4.60
自引率
0.00%
发文量
6
审稿时长
17 weeks
期刊介绍:
Web Ecology (WE) is an open-access journal issued by the European Ecological Federation (EEF) representing the ecological societies within Europe and associated members. Its special value is to serve as a publication forum for national ecological societies that do not maintain their own society journal. Web Ecology publishes papers from all fields of ecology without any geographic restriction. It is a forum to communicate results of experimental, theoretical, and descriptive studies of general interest to an international audience. Original contributions, short communications, and reviews on ecological research on all kinds of organisms and ecosystems are welcome as well as papers that express emerging ideas and concepts with a sound scientific background.