University of Worcester Worcester Research and Publications

Ponding in Intermittent Streams: a Refuge for Lotic Taxa and a Habitat for Newly Colonising Taxa?

Hill, Matthew and Milner, Victoria S. (2018) Ponding in Intermittent Streams: a Refuge for Lotic Taxa and a Habitat for Newly Colonising Taxa? Science of the Total Environment, 628 (629). pp. 1308-1316. ISSN 0048-9697 Online: 1879-1026

[img] Text
STOTEN. Ponding in intermittent streams_edited_minor_clean.docx - Accepted Version
Restricted to Repository staff only

Download (773kB) | Request a copy
STOTEN. Ponding in intermittent streams_edited_minor_clean.pdf - Accepted Version

Download (435kB) | Preview


Intermittent rivers are temporally dynamic, shifting between lotic, lentic (ponding) and dry habitat phases, yet almost all research effort has focussed on the lotic phase, with limited research attention on the lentic and dry phases. Information regarding the biological diversity of the lentic phase is vital to quantify the total aquatic biodiversity, their use as flow refugia, and the long-term conservation and management of intermittent rivers. In this study, we compared the diversity and composition of macroinvertebrates from perennial, intermittent and ponded sites in two intermittent rivers in the United Kingdom. We examined whether instream ponding provided refugia for lotic taxa and a habitat for newly colonising taxa. A total of 129 taxa (perennial - 86, intermittent - 82, ponding - 78) were recorded. Instream ponds were found to support heterogeneous communities compared to flowing sites. Twenty-two percent of taxa were recorded only from ponded sites, many of which were lentic specialists, while 38% of taxa persisted in instream ponds after flow had ceased. Results from this study highlight that instream ponds provide an important flow refuge for macroinvertebrates including rheophilic taxa, which move into instream ponds when channels become longitudinally disconnected, and makes a significant contribution to aquatic diversity in intermittent rivers, providing suitable habitat for newly colonising taxa. Aquatic diversity in intermittent rivers may have been underestimated historically, failing to acknowledge the ecological contribution of the lentic phase. Incorporating the ponding phase alongside the lotic phase will ensure the total aquatic biodiversity of intermittent rivers is quantified and effective biodiversity conservation and management strategies are employed.

Item Type: Article
Additional Information:

Staff and students at the University of Worcester can access the full-text of the online published article via the UW online library search. External users should check availability with their local library or Interlibrary Requests Service.

Uncontrolled Discrete Keywords: beta-diversity, biodiversity conservation, community composition, instream ponds, macroinvertebrates, ponding phase
Subjects: G Geography. Anthropology. Recreation > G Geography (General)
G Geography. Anthropology. Recreation > GB Physical geography
Q Science > Q Science (General)
Q Science > QL Zoology
Divisions: College of Health, Life and Environmental Sciences > School of Science and the Environment
Related URLs:
Depositing User: Matthew Hill
Date Deposited: 22 Feb 2018 13:27
Last Modified: 08 Sep 2020 10:59

Actions (login required)

View Item View Item
Worcester Research and Publications is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.