Distribution and co-occurrence patterns of charophytes and angiosperms in the northern Baltic Sea

Abstract The distribution data of 11 soft substrate charophyte and angiosperm species were analyzed. Our study aimed to elucidate the co-occurrence patterns among these sympatric macrophyte species and quantify their distribution areas. The central hypothesis of this study proposed that the observed...

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Main Authors: Kristjan Herkül, Kaire Torn, Tiia Möller-Raid, Georg Martin
Format: Article
Language:English
Published: Nature Portfolio 2023-11-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-023-47176-8
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author Kristjan Herkül
Kaire Torn
Tiia Möller-Raid
Georg Martin
author_facet Kristjan Herkül
Kaire Torn
Tiia Möller-Raid
Georg Martin
author_sort Kristjan Herkül
collection DOAJ
description Abstract The distribution data of 11 soft substrate charophyte and angiosperm species were analyzed. Our study aimed to elucidate the co-occurrence patterns among these sympatric macrophyte species and quantify their distribution areas. The central hypothesis of this study proposed that the observed co-occurrence patterns among the studied species deviate from what would be expected by random chance. Macrophyte occurrence data was derived from an extensive field sampling database. Environmental variables available as georeferenced raster layers including topographical, hydrodynamic, geological, physical, chemical, and biological variables were used as predictor variables in the random forest models to predict the spatial distribution of the species. Permutation tests revealed statistically significant deviations from random co-occurrence patterns. The analysis demonstrated that species tended to co-occur more frequently within their taxonomic groups (i.e., within charophytes and within angiosperms) than between these groups. The most extensive distribution overlap was observed between Chara aspera Willd. and Chara canescens Loisel., while Zostera marina L. exhibited the least overlap with the other species. The mean number of co-occurring species was the highest in Chara baltica (Hartman) Bruzelius while Z. marina had the largest share of single-species occurrences. Based on the distribution models, Stuckenia pectinata (L.) Börner had the largest distribution area.
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spelling doaj.art-0fc495dd68854618a1e5c1f15eeedc1d2023-11-20T09:28:51ZengNature PortfolioScientific Reports2045-23222023-11-0113111510.1038/s41598-023-47176-8Distribution and co-occurrence patterns of charophytes and angiosperms in the northern Baltic SeaKristjan Herkül0Kaire Torn1Tiia Möller-Raid2Georg Martin3Estonian Marine Institute, University of TartuEstonian Marine Institute, University of TartuEstonian Marine Institute, University of TartuEstonian Marine Institute, University of TartuAbstract The distribution data of 11 soft substrate charophyte and angiosperm species were analyzed. Our study aimed to elucidate the co-occurrence patterns among these sympatric macrophyte species and quantify their distribution areas. The central hypothesis of this study proposed that the observed co-occurrence patterns among the studied species deviate from what would be expected by random chance. Macrophyte occurrence data was derived from an extensive field sampling database. Environmental variables available as georeferenced raster layers including topographical, hydrodynamic, geological, physical, chemical, and biological variables were used as predictor variables in the random forest models to predict the spatial distribution of the species. Permutation tests revealed statistically significant deviations from random co-occurrence patterns. The analysis demonstrated that species tended to co-occur more frequently within their taxonomic groups (i.e., within charophytes and within angiosperms) than between these groups. The most extensive distribution overlap was observed between Chara aspera Willd. and Chara canescens Loisel., while Zostera marina L. exhibited the least overlap with the other species. The mean number of co-occurring species was the highest in Chara baltica (Hartman) Bruzelius while Z. marina had the largest share of single-species occurrences. Based on the distribution models, Stuckenia pectinata (L.) Börner had the largest distribution area.https://doi.org/10.1038/s41598-023-47176-8
spellingShingle Kristjan Herkül
Kaire Torn
Tiia Möller-Raid
Georg Martin
Distribution and co-occurrence patterns of charophytes and angiosperms in the northern Baltic Sea
Scientific Reports
title Distribution and co-occurrence patterns of charophytes and angiosperms in the northern Baltic Sea
title_full Distribution and co-occurrence patterns of charophytes and angiosperms in the northern Baltic Sea
title_fullStr Distribution and co-occurrence patterns of charophytes and angiosperms in the northern Baltic Sea
title_full_unstemmed Distribution and co-occurrence patterns of charophytes and angiosperms in the northern Baltic Sea
title_short Distribution and co-occurrence patterns of charophytes and angiosperms in the northern Baltic Sea
title_sort distribution and co occurrence patterns of charophytes and angiosperms in the northern baltic sea
url https://doi.org/10.1038/s41598-023-47176-8
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