Floods, drought, and seed mass of riparian plant species

Juliet Stromberg, Jere A. Boudell

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Plant communities in dryland riparian ecosystems are influenced by flood disturbance and water availability. As global climate change alters stream flow regimes, there is increasing need to understand which traits allow plant species to persist under increased stress and disturbance. Small seed mass is part of a strategy that adapts for disturbance, but the role of seed mass as an adaptation for drought is less well documented. For dryland riparian plant communities, we asked, does seed mass vary with water availability and flood frequency? We compared community seed mass between sites that vary in flow permanence (longitudinal water gradient) and between hydrogeomorphic surfaces within sites (lateral gradients of moisture and disturbance). Using data from four rivers in Arizona, we contrasted seed mass between plant groups. We found community seed mass to be greater at sites with ephemeral than perennial flow, and to increase laterally from wet, frequently-flooded channel edges to dry, less disturbed terraces. Seed mass varied by moisture group (smallest for hydroriparian species) and by disturbance group (smallest for disturbance species), and showed a trend for being greater in introduced species. We conclude that small seed mass is independently associated with wet and disturbed conditions in dryland riparian ecosystems.

Original languageEnglish (US)
Pages (from-to)99-107
Number of pages9
JournalJournal of Arid Environments
Volume97
DOIs
StatePublished - Oct 2013

Fingerprint

drought
seed
seeds
disturbance
arid lands
water availability
plant community
plant communities
moisture
plant species
flood frequency
ecosystems
ecosystem
water
terraces
stream flow
introduced species
terrace
streamflow
global climate

Keywords

  • Arid
  • Disturbance
  • Ephemeral stream
  • Floodplain
  • Plant community
  • Water
  • Wetland

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Earth-Surface Processes
  • Ecology

Cite this

Floods, drought, and seed mass of riparian plant species. / Stromberg, Juliet; Boudell, Jere A.

In: Journal of Arid Environments, Vol. 97, 10.2013, p. 99-107.

Research output: Contribution to journalArticle

Stromberg, Juliet ; Boudell, Jere A. / Floods, drought, and seed mass of riparian plant species. In: Journal of Arid Environments. 2013 ; Vol. 97. pp. 99-107.
@article{6a077a862fda43419b6c4b5312a602d2,
title = "Floods, drought, and seed mass of riparian plant species",
abstract = "Plant communities in dryland riparian ecosystems are influenced by flood disturbance and water availability. As global climate change alters stream flow regimes, there is increasing need to understand which traits allow plant species to persist under increased stress and disturbance. Small seed mass is part of a strategy that adapts for disturbance, but the role of seed mass as an adaptation for drought is less well documented. For dryland riparian plant communities, we asked, does seed mass vary with water availability and flood frequency? We compared community seed mass between sites that vary in flow permanence (longitudinal water gradient) and between hydrogeomorphic surfaces within sites (lateral gradients of moisture and disturbance). Using data from four rivers in Arizona, we contrasted seed mass between plant groups. We found community seed mass to be greater at sites with ephemeral than perennial flow, and to increase laterally from wet, frequently-flooded channel edges to dry, less disturbed terraces. Seed mass varied by moisture group (smallest for hydroriparian species) and by disturbance group (smallest for disturbance species), and showed a trend for being greater in introduced species. We conclude that small seed mass is independently associated with wet and disturbed conditions in dryland riparian ecosystems.",
keywords = "Arid, Disturbance, Ephemeral stream, Floodplain, Plant community, Water, Wetland",
author = "Juliet Stromberg and Boudell, {Jere A.}",
year = "2013",
month = "10",
doi = "10.1016/j.jaridenv.2013.05.012",
language = "English (US)",
volume = "97",
pages = "99--107",
journal = "Journal of Arid Environments",
issn = "0140-1963",
publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Floods, drought, and seed mass of riparian plant species

AU - Stromberg, Juliet

AU - Boudell, Jere A.

PY - 2013/10

Y1 - 2013/10

N2 - Plant communities in dryland riparian ecosystems are influenced by flood disturbance and water availability. As global climate change alters stream flow regimes, there is increasing need to understand which traits allow plant species to persist under increased stress and disturbance. Small seed mass is part of a strategy that adapts for disturbance, but the role of seed mass as an adaptation for drought is less well documented. For dryland riparian plant communities, we asked, does seed mass vary with water availability and flood frequency? We compared community seed mass between sites that vary in flow permanence (longitudinal water gradient) and between hydrogeomorphic surfaces within sites (lateral gradients of moisture and disturbance). Using data from four rivers in Arizona, we contrasted seed mass between plant groups. We found community seed mass to be greater at sites with ephemeral than perennial flow, and to increase laterally from wet, frequently-flooded channel edges to dry, less disturbed terraces. Seed mass varied by moisture group (smallest for hydroriparian species) and by disturbance group (smallest for disturbance species), and showed a trend for being greater in introduced species. We conclude that small seed mass is independently associated with wet and disturbed conditions in dryland riparian ecosystems.

AB - Plant communities in dryland riparian ecosystems are influenced by flood disturbance and water availability. As global climate change alters stream flow regimes, there is increasing need to understand which traits allow plant species to persist under increased stress and disturbance. Small seed mass is part of a strategy that adapts for disturbance, but the role of seed mass as an adaptation for drought is less well documented. For dryland riparian plant communities, we asked, does seed mass vary with water availability and flood frequency? We compared community seed mass between sites that vary in flow permanence (longitudinal water gradient) and between hydrogeomorphic surfaces within sites (lateral gradients of moisture and disturbance). Using data from four rivers in Arizona, we contrasted seed mass between plant groups. We found community seed mass to be greater at sites with ephemeral than perennial flow, and to increase laterally from wet, frequently-flooded channel edges to dry, less disturbed terraces. Seed mass varied by moisture group (smallest for hydroriparian species) and by disturbance group (smallest for disturbance species), and showed a trend for being greater in introduced species. We conclude that small seed mass is independently associated with wet and disturbed conditions in dryland riparian ecosystems.

KW - Arid

KW - Disturbance

KW - Ephemeral stream

KW - Floodplain

KW - Plant community

KW - Water

KW - Wetland

UR - http://www.scopus.com/inward/record.url?scp=84879699724&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84879699724&partnerID=8YFLogxK

U2 - 10.1016/j.jaridenv.2013.05.012

DO - 10.1016/j.jaridenv.2013.05.012

M3 - Article

AN - SCOPUS:84879699724

VL - 97

SP - 99

EP - 107

JO - Journal of Arid Environments

JF - Journal of Arid Environments

SN - 0140-1963

ER -