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首页> 外文期刊>ICES journal of marine science: International Council for the Exploration of the Sea journal of marine science >Widespread seagrass die-off has no legacy effect on basal resource use of seagrass food webs in Florida Bay, USA
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Widespread seagrass die-off has no legacy effect on basal resource use of seagrass food webs in Florida Bay, USA

机译:Widespread seagrass die-off has no legacy effect on basal resource use of seagrass food webs in Florida Bay, USA

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摘要

Macrophyte foundation species provide both habitat structure and primary production, and loss of these habitats can alter species interactions and lead to changes in energy flow in food webs. Extensive seagrass meadows in Florida Bay have recently experienced a widespread loss of seagrass habitat due to a Thalassia testudinum mass mortality event in 2015 associated with prolonged hypersalinity and bottom-water anoxia. Using stable isotope analysis paired with Bayesian mixing models, we investigated the basal resource use of seven species of seagrassassociated consumers across Florida Bay in areas affected by the 2015 seagrass die-off. Three years after the die-off, basal resource use did not differ for species collected inside and outside the die-off affected areas. Instead, consumers showed seasonal patterns in basal resource use with seagrass the most important in the wet season (58%), while epiphytes were the most important in the dry season (44%). Additionally, intraspecific spatial variability in resource use was lower in the wet season compared to the dry season. We were unable to detect a legacy effect of a major disturbance on the basal resource use of the most common seagrass-associated consumers in Florida Bay.

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    Institute of Environment, Florida International University, 11200 SW 8th Street, OE 148 Miami, FL 33199, USA,Department of Biological Sciences, Florida International University, 3000 NE 151st Street, AC1 300, North Miami, FL 33181 , USA,Department of Eart;

    Institute of Environment, Florida International University, 11200 SW 8th Street, OE 148 Miami, FL 33199, USA,Department of Biological Sciences, Florida International University, 3000 NE 151st Street, AC1 300, North Miami, FL 33181 , USA;

    Department of Earth and Environment, Florida International University, 11200 SW 8th Street, AHC5 360, Miami, FL 33199, USADepartment of Marine Science, Coastal Carolina University, 103 Tom Trout Dr, Conway, SC 29526, USASouth Florida Natural Resources Center, National Park Service, 9700 SW 328th Street Sir Lancelot JonesWay, Homestead, FL 33033, USAFlorida Fish and Wildlife Conservation Commission, Florida Fish and Wildlife Research Institute, 100 8th Ave SE, Saint Petersburg, FL 33701, USANOAA Atlantic Oceanographic and Meteorological Laboratory Ocean Chemistry and Ecosystems Division, 4301 Rickenbacker Causeway, Miami, FL 33149, USAInstitute of Environment, Florida International University, 11200 SW 8th Street, OE 148 Miami, FL 33199, USA,Department of Earth and Environment, Florida International University, 11200 SW 8th Street, AHC5 360, Miami, FL 33199, USADepartment of Biology, University of Louisiana Lafayette, 104 E University Ave, Lafayette, LA 70503, USA;

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  • 正文语种 英语
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  • 关键词

    epiphytes; foundation species; habitat loss; mixing models; stable isotopes;

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