Physical oceanographic drivers of geomorphology of rhodolith/maerl beds in Galway Bay, Ireland

Siddhi Joshi; Eugene Farrell

doi:10.1016/B978-0-12-814960-7.00012-9

Physical oceanographic drivers of geomorphology of rhodolith/maerl beds in Galway Bay, Ireland

Siddhi Joshi
, Eugene Farrell

Geography

University of Galway

Research output: Chapter in Book or Conference Publication/Proceeding › Chapter › peer-review

6 Citations (Scopus)

Abstract

Galway Bay is a semienclosed, large bay (62 by 33km) located in the West of Ireland, Northeast Atlantic. Living maerl or rhodolith beds (nongeniculate coralline red algae) as well as dense biogenic gravel beaches (composed of fossilized dead maerl debris) and the associated subaqueous dune systems are found in both inner Galway Bay and complexes (i.e., bays in the North coast), with some deeper Aran maerl beds also found at depths up to 26–30m. Peak combined wave–current-induced sediment mobility and residual currents were key physical surrogates for maerl, governing distribution of live maerl beds and debris beaches. Increased intensity and frequency of storm events, attributed to anthropogenic climate change, may result in future erosion of subaqueous maerl dune systems and a sharp decline in habitat condition.

Original language	English
Title of host publication	Seafloor Geomorphology as Benthic Habitat
Subtitle of host publication	GeoHab Atlas of Seafloor Geomorphic Features and Benthic Habitats
Publisher	Elsevier
Pages	231-242
Number of pages	12
ISBN (Electronic)	9780128149607
ISBN (Print)	9780128149614
DOIs	https://doi.org/10.1016/B978-0-12-814960-7.00012-9
Publication status	Published - 1 Jan 2019

Keywords

climate change
habitat dynamics
hydrodynamic modeling
Maerl
Rhodolith
sediment dynamics
shear stress
storminess
wave modeling

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/B978-0-12-814960-7.00012-9

Cite this

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abstract = "Galway Bay is a semienclosed, large bay (62 by 33km) located in the West of Ireland, Northeast Atlantic. Living maerl or rhodolith beds (nongeniculate coralline red algae) as well as dense biogenic gravel beaches (composed of fossilized dead maerl debris) and the associated subaqueous dune systems are found in both inner Galway Bay and complexes (i.e., bays in the North coast), with some deeper Aran maerl beds also found at depths up to 26–30m. Peak combined wave–current-induced sediment mobility and residual currents were key physical surrogates for maerl, governing distribution of live maerl beds and debris beaches. Increased intensity and frequency of storm events, attributed to anthropogenic climate change, may result in future erosion of subaqueous maerl dune systems and a sharp decline in habitat condition.",

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N2 - Galway Bay is a semienclosed, large bay (62 by 33km) located in the West of Ireland, Northeast Atlantic. Living maerl or rhodolith beds (nongeniculate coralline red algae) as well as dense biogenic gravel beaches (composed of fossilized dead maerl debris) and the associated subaqueous dune systems are found in both inner Galway Bay and complexes (i.e., bays in the North coast), with some deeper Aran maerl beds also found at depths up to 26–30m. Peak combined wave–current-induced sediment mobility and residual currents were key physical surrogates for maerl, governing distribution of live maerl beds and debris beaches. Increased intensity and frequency of storm events, attributed to anthropogenic climate change, may result in future erosion of subaqueous maerl dune systems and a sharp decline in habitat condition.

AB - Galway Bay is a semienclosed, large bay (62 by 33km) located in the West of Ireland, Northeast Atlantic. Living maerl or rhodolith beds (nongeniculate coralline red algae) as well as dense biogenic gravel beaches (composed of fossilized dead maerl debris) and the associated subaqueous dune systems are found in both inner Galway Bay and complexes (i.e., bays in the North coast), with some deeper Aran maerl beds also found at depths up to 26–30m. Peak combined wave–current-induced sediment mobility and residual currents were key physical surrogates for maerl, governing distribution of live maerl beds and debris beaches. Increased intensity and frequency of storm events, attributed to anthropogenic climate change, may result in future erosion of subaqueous maerl dune systems and a sharp decline in habitat condition.

KW - climate change

KW - habitat dynamics

KW - hydrodynamic modeling

KW - Maerl

KW - Rhodolith

KW - sediment dynamics

KW - shear stress

KW - storminess

KW - wave modeling

UR - https://www.scopus.com/pages/publications/85121460396

U2 - 10.1016/B978-0-12-814960-7.00012-9

DO - 10.1016/B978-0-12-814960-7.00012-9

M3 - Chapter

AN - SCOPUS:85121460396

SN - 9780128149614

SP - 231

EP - 242

BT - Seafloor Geomorphology as Benthic Habitat

PB - Elsevier

ER -

Physical oceanographic drivers of geomorphology of rhodolith/maerl beds in Galway Bay, Ireland

Abstract

Keywords

UN SDGs

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