Thermal exposure risks to mobile tropical marine snails: are eco-engineered rock pools on seawalls scale-specific enough for comprehensive biodiversity outcomes?

Waltham, Nathan J., and Sheaves, Marcus (2020) Thermal exposure risks to mobile tropical marine snails: are eco-engineered rock pools on seawalls scale-specific enough for comprehensive biodiversity outcomes? Marine Pollution Bulletin, 156. 111237.

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Abstract

To test the model that eco-engineering plant boxes on seawalls sustain water temperatures within thermal tolerance to maximize tropical marine biodiversity, we conducted acute thermal effects (AET) experiments using intertidal gastropods (Nerita albicilla and Littoraria articulata). The AET50 (50th percentile) for N. albicilla (39.6 °C) was higher than L. articulata (32.8 °C). Loggers (Hobo) in boxes on a seawall positioned for full exposure to air temperature at mean sea level (< 1.1 m) recorded temperature every 20 min during summer months. Temperature frequency distribution plots were generated for day and night, above and below 1.1 m (which is proximal to mean tide level for the region). Using the AET50, N. albicilla would need to thermoregulate for a lower percentage of time compared to L. articulata regardless of day and night. It is likely that designing eco-engineering improvements to include microclimate refugia are particularly relevant in tropical areas, where extreme environmental conditions mean that scale-specific actions are important components for climate adaptation.

Item ID: 63317
Item Type: Article (Research - C1)
ISSN: 1879-3363
Keywords: Eco-engineering, Seawalls, Thermal tolerance, Marine snails, Tropical estuaries
Copyright Information: © 2020 Elsevier Ltd. All rights reserved.
Funders: James Cook University, TropWATER
Date Deposited: 15 Jul 2020 01:12
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050205 Environmental Management @ 50%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050206 Environmental Monitoring @ 50%
SEO Codes: 96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960503 Ecosystem Assessment and Management of Coastal and Estuarine Environments @ 50%
96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960507 Ecosystem Assessment and Management of Marine Environments @ 50%
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