Implications of macroalgae blooms to the spatial structure of seagrass seascapes: The case of the Anadyomene spp. (Chlorophyta) bloom in Biscayne Bay, Florida.

Autor: Santos RO; Institute of Water and Environment, Florida International University, Miami, FL, USA. Electronic address: rsantosc@fiu.edu., Varona G; Miami-Dade Division of Environmental Resources Management, FL, USA., Avila CL; South Florida Water Management District, West Palm Beach, FL, USA., Lirman D; Rosenstiel School of Marine and Atmospheric Science, University of Miami, FL, USA., Collado-Vides L; Department of Biological Sciences and Center for Coastal Oceans Research in the Institute for Water and Environment, Florida International University, Miami, FL, USA.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2020 Jan; Vol. 150, pp. 110742. Date of Electronic Publication: 2019 Nov 29.
DOI: 10.1016/j.marpolbul.2019.110742
Abstrakt: Macroalgal blooms are becoming an increasing problem in coastal regions worldwide and have been associated with a widespread decline of seagrass habitats. It is critical to measure macroalgal bloom (MB) impacts at broad spatial scales since seagrass seascape characteristics can influence feedback processes that regulate the resilience of seagrass ecosystems. We assessed the broad-scale spatial impacts of an MB formed by Anadyomene spp. on the seagrass seascapes in Biscayne Bay (Miami, US) using a multi-scale seascape approach. By integrating field and remote sensing data, our multi-scale approach showed significant reductions in seagrass foliage cover and a seascape structure transformation across the bloom extent. The landscape cover and patch extensiveness declined after the MB peak. Other spatial pattern metrics also showed that the seagrass seascape structure got fragmented. We demonstrated that a persistent MB could transform the structure of seagrass seascapes, hindering the resilience of seagrass habitats.
(Copyright © 2019 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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