Invertebrate zoogeomorphology: A review and conceptual framework for rivers

Journal article


Mason, R. and Sanders, H. 2021. Invertebrate zoogeomorphology: A review and conceptual framework for rivers. WIREs Water. 8 (5). https://doi.org/10.1002/wat2.1540
AuthorsMason, R. and Sanders, H.
Abstract

Invertebrates are important sediment engineers, making up for their small body size with abundance and behavioral diversity. However, despite the recognized importance of invertebrates as sediment engineers in terrestrial and marine environments, zoogeomorphology in rivers has primarily considered larger taxa, such as fish and beaver. This article reviews the zoogeomorphic effects of invertebrates in freshwater habitats, with a focus on rivers. To better synthesize current zoogeomorphic research and to help guide future studies we build a conceptual model considering biotic (behavior, abundance, body size, life history, and species invasions) and abiotic (geophysical energy and sediment grain size) controls on the direction and magnitude of zoogeomorphology. We also incorporate invertebrate engineers into conceptual sediment entrainment models, to understand their geomorphic role in the context of hydraulic power and sediment size. We structure our review around invertebrate behavior as a key control on whether invertebrates have a sediment destabilizing or stabilizing impact. Invertebrate zoogeomorphic behavior are diverse; the majority of research concerns bioturbation, a result of locomotion, foraging, and burrowing behaviors by many taxa. Similarly, burrowing into bedrock by a caddisfly and non-biting midge larvae promotes bioerosion. Attachment to the substrate, (e.g., silk nets by caddisfly larvae or byssal threads by some mussels) can stabilize sediment, providing bioprotection. Bioconstructions (e.g., caddisfly cases and mussel shells) may have either stabilizing or destabilizing effects depending on their density and abiotic context. Interactions between lotic invertebrates and fluvial processes are complex and understudied, requiring further research across a greater range of taxa, behaviors, and spatiotemporal scales.

KeywordsWater and life; Freshwater ecosystems; Conservation; Invertebrates
Year2021
JournalWIREs Water
Journal citation8 (5)
PublisherWiley
ISSN2049-1948
Digital Object Identifier (DOI)https://doi.org/10.1002/wat2.1540
Official URLhttps://wires.onlinelibrary.wiley.com/doi/full/10.1002/wat2.1540
Publication dates
Online25 Jun 2021
Publication process dates
Deposited23 Sep 2021
Publisher's version
License
Output statusPublished
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https://repository.canterbury.ac.uk/item/8y93y/invertebrate-zoogeomorphology-a-review-and-conceptual-framework-for-rivers

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