Loading…

Developing plant functional groups to identify changes in functional composition and diversity in a dryland river experiencing artificially sustained flows

Land use and climate changes are driving significant shifts in the magnitude and persistence of dryland stream surface flows. The impact of these shifts on ecological functioning is largely unknown, particularly where streams have become wetter rather than drier. This study investigated relationship...

Full description

Saved in:
Bibliographic Details
Published in:The Science of the total environment 2024-07, Vol.934, p.173198, Article 173198
Main Authors: Eckersley, Jake, O'Donnell, Alison J., Pettit, Neil E., Grierson, Pauline F.
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by
cites cdi_FETCH-LOGICAL-c366t-668ea8e6c785e732e114e6d3ee2d8726848d50db86b206ee08c9bd89208e1da13
container_end_page
container_issue
container_start_page 173198
container_title The Science of the total environment
container_volume 934
creator Eckersley, Jake
O'Donnell, Alison J.
Pettit, Neil E.
Grierson, Pauline F.
description Land use and climate changes are driving significant shifts in the magnitude and persistence of dryland stream surface flows. The impact of these shifts on ecological functioning is largely unknown, particularly where streams have become wetter rather than drier. This study investigated relationships between hydrologic regime (including surface water persistence, differences in groundwater depth and altered flooding dynamics) with plant traits and riverine vegetation functional composition. Our study system was a previously ephemeral creek in semi-arid northwest Australia that has received groundwater discharge from nearby mining operations for >15 years; surface flows are now persistent for ∼27 km downstream of the discharge point. We aimed to (i) identify plant functional groups (FGs) associated with the creek and adjacent floodplain; and (ii) assess their distribution across hydrological gradients to predict shifts in ecological functioning in response to changing flow regimes. Seven FGs were identified using hierarchical clustering of 40 woody perennial plant species based on morphometric, phenological and physiologic traits. We then investigated how FG abundance (projective foliar cover), functional composition, and functional and taxonomic richness varied along a 14 km gradient from persistent to ephemeral flows, varying groundwater depths, and distances from the stream channel. Dominant FGs were (i) drought avoidant mesic trees that are fluvial stress tolerant, or (ii) drought tolerant xeric tall shrubs that are fluvial stress intolerant. The drought avoidant mesic tree FG was associated with shallow groundwater but exhibited lower cover in riparian areas closer to the discharge (persistent surface flows). However, there were more FGs and higher species richness closer to the discharge point, particularly on the floodplain. Our findings demonstrate that quantifying FG distribution and diversity is a significant step in both assessing the impacts of mine water discharge on riverine ecosystems and for planning for post-mining restoration. [Display omitted] •The distribution of plants traits were explored across a gradient of mine water discharge.•Plant functional groups were defined for the Pilbara region using a suite of functional traits.•Cover of groundwater dependent riparian trees was lower in areas with greater flow permanence.•Species and functional richness were higher under permanent flows, particularly on floodplains.
doi_str_mv 10.1016/j.scitotenv.2024.173198
format article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_3055892218</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S004896972403345X</els_id><sourcerecordid>3055892218</sourcerecordid><originalsourceid>FETCH-LOGICAL-c366t-668ea8e6c785e732e114e6d3ee2d8726848d50db86b206ee08c9bd89208e1da13</originalsourceid><addsrcrecordid>eNqFkcGOFCEQholx446rr6AcvfQIdDfQx826qyabeHHPhIHqkQkDLdCj_Sy-7NKZdeNNLqQqX_1_wY_Qe0q2lFD-8bDNxpVYIJy2jLBuS0VLB_kCbagUQ0MJ4y_RhpBONgMfxCV6nfOB1CMkfYUuWyl6IjqyQX8-wQl8nFzY48nrUPA4B1NcDNrjfYrzlHGJ2FkIxY0LNj902EPGLvwLmnicYnZrhXWw2LoTpFovK6exTYtf22ltY_g9QXIQzOqpU5V1xmnvF5znXLQLYPHo46_8Bl2M2md4-3RfoYe72-83X5r7b5-_3lzfN6blvDScS9ASuBGyB9EyoLQDblsAZqVgXHbS9sTuJN8xwgGINMPOyoERCdRq2l6hD2fdKcWfM-Siji4b8HVniHNWLen7ijMqKyrOqEkx5wSjmpI76rQoStSajDqo52TUmow6J1Mn3z2ZzLsj2Oe5v1FU4PoMQH3qyUFaheovgXUJTFE2uv-aPAKAIakQ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>3055892218</pqid></control><display><type>article</type><title>Developing plant functional groups to identify changes in functional composition and diversity in a dryland river experiencing artificially sustained flows</title><source>ScienceDirect Freedom Collection 2022-2024</source><creator>Eckersley, Jake ; O'Donnell, Alison J. ; Pettit, Neil E. ; Grierson, Pauline F.</creator><creatorcontrib>Eckersley, Jake ; O'Donnell, Alison J. ; Pettit, Neil E. ; Grierson, Pauline F.</creatorcontrib><description>Land use and climate changes are driving significant shifts in the magnitude and persistence of dryland stream surface flows. The impact of these shifts on ecological functioning is largely unknown, particularly where streams have become wetter rather than drier. This study investigated relationships between hydrologic regime (including surface water persistence, differences in groundwater depth and altered flooding dynamics) with plant traits and riverine vegetation functional composition. Our study system was a previously ephemeral creek in semi-arid northwest Australia that has received groundwater discharge from nearby mining operations for &gt;15 years; surface flows are now persistent for ∼27 km downstream of the discharge point. We aimed to (i) identify plant functional groups (FGs) associated with the creek and adjacent floodplain; and (ii) assess their distribution across hydrological gradients to predict shifts in ecological functioning in response to changing flow regimes. Seven FGs were identified using hierarchical clustering of 40 woody perennial plant species based on morphometric, phenological and physiologic traits. We then investigated how FG abundance (projective foliar cover), functional composition, and functional and taxonomic richness varied along a 14 km gradient from persistent to ephemeral flows, varying groundwater depths, and distances from the stream channel. Dominant FGs were (i) drought avoidant mesic trees that are fluvial stress tolerant, or (ii) drought tolerant xeric tall shrubs that are fluvial stress intolerant. The drought avoidant mesic tree FG was associated with shallow groundwater but exhibited lower cover in riparian areas closer to the discharge (persistent surface flows). However, there were more FGs and higher species richness closer to the discharge point, particularly on the floodplain. Our findings demonstrate that quantifying FG distribution and diversity is a significant step in both assessing the impacts of mine water discharge on riverine ecosystems and for planning for post-mining restoration. [Display omitted] •The distribution of plants traits were explored across a gradient of mine water discharge.•Plant functional groups were defined for the Pilbara region using a suite of functional traits.•Cover of groundwater dependent riparian trees was lower in areas with greater flow permanence.•Species and functional richness were higher under permanent flows, particularly on floodplains.</description><identifier>ISSN: 0048-9697</identifier><identifier>ISSN: 1879-1026</identifier><identifier>EISSN: 1879-1026</identifier><identifier>DOI: 10.1016/j.scitotenv.2024.173198</identifier><identifier>PMID: 38750740</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Flow alteration ; Mine dewatering ; Pilbara ; Plant functional traits ; Riparian vegetation</subject><ispartof>The Science of the total environment, 2024-07, Vol.934, p.173198, Article 173198</ispartof><rights>2024 The Authors</rights><rights>Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c366t-668ea8e6c785e732e114e6d3ee2d8726848d50db86b206ee08c9bd89208e1da13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/38750740$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Eckersley, Jake</creatorcontrib><creatorcontrib>O'Donnell, Alison J.</creatorcontrib><creatorcontrib>Pettit, Neil E.</creatorcontrib><creatorcontrib>Grierson, Pauline F.</creatorcontrib><title>Developing plant functional groups to identify changes in functional composition and diversity in a dryland river experiencing artificially sustained flows</title><title>The Science of the total environment</title><addtitle>Sci Total Environ</addtitle><description>Land use and climate changes are driving significant shifts in the magnitude and persistence of dryland stream surface flows. The impact of these shifts on ecological functioning is largely unknown, particularly where streams have become wetter rather than drier. This study investigated relationships between hydrologic regime (including surface water persistence, differences in groundwater depth and altered flooding dynamics) with plant traits and riverine vegetation functional composition. Our study system was a previously ephemeral creek in semi-arid northwest Australia that has received groundwater discharge from nearby mining operations for &gt;15 years; surface flows are now persistent for ∼27 km downstream of the discharge point. We aimed to (i) identify plant functional groups (FGs) associated with the creek and adjacent floodplain; and (ii) assess their distribution across hydrological gradients to predict shifts in ecological functioning in response to changing flow regimes. Seven FGs were identified using hierarchical clustering of 40 woody perennial plant species based on morphometric, phenological and physiologic traits. We then investigated how FG abundance (projective foliar cover), functional composition, and functional and taxonomic richness varied along a 14 km gradient from persistent to ephemeral flows, varying groundwater depths, and distances from the stream channel. Dominant FGs were (i) drought avoidant mesic trees that are fluvial stress tolerant, or (ii) drought tolerant xeric tall shrubs that are fluvial stress intolerant. The drought avoidant mesic tree FG was associated with shallow groundwater but exhibited lower cover in riparian areas closer to the discharge (persistent surface flows). However, there were more FGs and higher species richness closer to the discharge point, particularly on the floodplain. Our findings demonstrate that quantifying FG distribution and diversity is a significant step in both assessing the impacts of mine water discharge on riverine ecosystems and for planning for post-mining restoration. [Display omitted] •The distribution of plants traits were explored across a gradient of mine water discharge.•Plant functional groups were defined for the Pilbara region using a suite of functional traits.•Cover of groundwater dependent riparian trees was lower in areas with greater flow permanence.•Species and functional richness were higher under permanent flows, particularly on floodplains.</description><subject>Flow alteration</subject><subject>Mine dewatering</subject><subject>Pilbara</subject><subject>Plant functional traits</subject><subject>Riparian vegetation</subject><issn>0048-9697</issn><issn>1879-1026</issn><issn>1879-1026</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNqFkcGOFCEQholx446rr6AcvfQIdDfQx826qyabeHHPhIHqkQkDLdCj_Sy-7NKZdeNNLqQqX_1_wY_Qe0q2lFD-8bDNxpVYIJy2jLBuS0VLB_kCbagUQ0MJ4y_RhpBONgMfxCV6nfOB1CMkfYUuWyl6IjqyQX8-wQl8nFzY48nrUPA4B1NcDNrjfYrzlHGJ2FkIxY0LNj902EPGLvwLmnicYnZrhXWw2LoTpFovK6exTYtf22ltY_g9QXIQzOqpU5V1xmnvF5znXLQLYPHo46_8Bl2M2md4-3RfoYe72-83X5r7b5-_3lzfN6blvDScS9ASuBGyB9EyoLQDblsAZqVgXHbS9sTuJN8xwgGINMPOyoERCdRq2l6hD2fdKcWfM-Siji4b8HVniHNWLen7ijMqKyrOqEkx5wSjmpI76rQoStSajDqo52TUmow6J1Mn3z2ZzLsj2Oe5v1FU4PoMQH3qyUFaheovgXUJTFE2uv-aPAKAIakQ</recordid><startdate>20240715</startdate><enddate>20240715</enddate><creator>Eckersley, Jake</creator><creator>O'Donnell, Alison J.</creator><creator>Pettit, Neil E.</creator><creator>Grierson, Pauline F.</creator><general>Elsevier B.V</general><scope>6I.</scope><scope>AAFTH</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20240715</creationdate><title>Developing plant functional groups to identify changes in functional composition and diversity in a dryland river experiencing artificially sustained flows</title><author>Eckersley, Jake ; O'Donnell, Alison J. ; Pettit, Neil E. ; Grierson, Pauline F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c366t-668ea8e6c785e732e114e6d3ee2d8726848d50db86b206ee08c9bd89208e1da13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Flow alteration</topic><topic>Mine dewatering</topic><topic>Pilbara</topic><topic>Plant functional traits</topic><topic>Riparian vegetation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Eckersley, Jake</creatorcontrib><creatorcontrib>O'Donnell, Alison J.</creatorcontrib><creatorcontrib>Pettit, Neil E.</creatorcontrib><creatorcontrib>Grierson, Pauline F.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>The Science of the total environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Eckersley, Jake</au><au>O'Donnell, Alison J.</au><au>Pettit, Neil E.</au><au>Grierson, Pauline F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Developing plant functional groups to identify changes in functional composition and diversity in a dryland river experiencing artificially sustained flows</atitle><jtitle>The Science of the total environment</jtitle><addtitle>Sci Total Environ</addtitle><date>2024-07-15</date><risdate>2024</risdate><volume>934</volume><spage>173198</spage><pages>173198-</pages><artnum>173198</artnum><issn>0048-9697</issn><issn>1879-1026</issn><eissn>1879-1026</eissn><abstract>Land use and climate changes are driving significant shifts in the magnitude and persistence of dryland stream surface flows. The impact of these shifts on ecological functioning is largely unknown, particularly where streams have become wetter rather than drier. This study investigated relationships between hydrologic regime (including surface water persistence, differences in groundwater depth and altered flooding dynamics) with plant traits and riverine vegetation functional composition. Our study system was a previously ephemeral creek in semi-arid northwest Australia that has received groundwater discharge from nearby mining operations for &gt;15 years; surface flows are now persistent for ∼27 km downstream of the discharge point. We aimed to (i) identify plant functional groups (FGs) associated with the creek and adjacent floodplain; and (ii) assess their distribution across hydrological gradients to predict shifts in ecological functioning in response to changing flow regimes. Seven FGs were identified using hierarchical clustering of 40 woody perennial plant species based on morphometric, phenological and physiologic traits. We then investigated how FG abundance (projective foliar cover), functional composition, and functional and taxonomic richness varied along a 14 km gradient from persistent to ephemeral flows, varying groundwater depths, and distances from the stream channel. Dominant FGs were (i) drought avoidant mesic trees that are fluvial stress tolerant, or (ii) drought tolerant xeric tall shrubs that are fluvial stress intolerant. The drought avoidant mesic tree FG was associated with shallow groundwater but exhibited lower cover in riparian areas closer to the discharge (persistent surface flows). However, there were more FGs and higher species richness closer to the discharge point, particularly on the floodplain. Our findings demonstrate that quantifying FG distribution and diversity is a significant step in both assessing the impacts of mine water discharge on riverine ecosystems and for planning for post-mining restoration. [Display omitted] •The distribution of plants traits were explored across a gradient of mine water discharge.•Plant functional groups were defined for the Pilbara region using a suite of functional traits.•Cover of groundwater dependent riparian trees was lower in areas with greater flow permanence.•Species and functional richness were higher under permanent flows, particularly on floodplains.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>38750740</pmid><doi>10.1016/j.scitotenv.2024.173198</doi><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0048-9697
ispartof The Science of the total environment, 2024-07, Vol.934, p.173198, Article 173198
issn 0048-9697
1879-1026
1879-1026
language eng
recordid cdi_proquest_miscellaneous_3055892218
source ScienceDirect Freedom Collection 2022-2024
subjects Flow alteration
Mine dewatering
Pilbara
Plant functional traits
Riparian vegetation
title Developing plant functional groups to identify changes in functional composition and diversity in a dryland river experiencing artificially sustained flows
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-25T11%3A55%3A40IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Developing%20plant%20functional%20groups%20to%20identify%20changes%20in%20functional%20composition%20and%20diversity%20in%20a%20dryland%20river%20experiencing%20artificially%20sustained%20flows&rft.jtitle=The%20Science%20of%20the%20total%20environment&rft.au=Eckersley,%20Jake&rft.date=2024-07-15&rft.volume=934&rft.spage=173198&rft.pages=173198-&rft.artnum=173198&rft.issn=0048-9697&rft.eissn=1879-1026&rft_id=info:doi/10.1016/j.scitotenv.2024.173198&rft_dat=%3Cproquest_cross%3E3055892218%3C/proquest_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c366t-668ea8e6c785e732e114e6d3ee2d8726848d50db86b206ee08c9bd89208e1da13%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=3055892218&rft_id=info:pmid/38750740&rfr_iscdi=true