Amanda W Demopoulos

Sediment macrofaunal composition, sediment grain size, and taxa functional traits of multiple deep-sea coral habitats in the Gulf of Mexico, 2009-2014

Deep-sea corals can create a highly complex, three-dimensional structure that facilitates sediment accumulation and influences adjacent sediment environments through altered hydrodynamic regimes. Infaunal communities adjacent to different coral types, including reef-building scleractinian corals and individual colonies of octocorals, are known to differ from background non-coral soft-sediment communities, often exhibiting higher macrofaunal densities and distinct community structure. However, the coral types have different morphologies, which may modify the adjacent sediment communities in discrete ways. Here we address two main questions: 1) how infaunal communities adjacent to deep-sea corals and their associated...

Categories: Data; Tags: Benthos, Ecology, Gulf of Mexico, USGS Science Data Catalog (SDC), biota, All tags... coral, deep-sea, macrofauna, Fewer tags

Baseline data for a hydrological restoration of a mangrove forest near Goodland, Florida (2015 - 2017)

Mangrove restoration has a strong potential to enhance the services provided by coastal wetlands on a number of Department of the Interior (DOI) managed lands throughout the southeastern United States of America. Services include storm protection, water quality improvement, and biological carbon sequestration. Forest structural attributes including basal area, tree height, and stem density by species are used to calculate above ground biomass and above ground productivity. Percent cover is used to asses the forest canopy health. The data collected for the soils are: bulk density, percent total Nitrogen, percent total Carbon, and selected samples percent total Phosporus. The forest structure plots were placed in...

Categories: Data; Types: Citation; Tags: Avicennia germinans, Carbon, Collier County, Conocarpus erectus, Ecology, All tags... Environmental Health, Florida, Goodland, Laguncularia racemosa, Nitrogen, Phosphorus, Rhizophora mangle, USA, USGS Science Data Catalog (SDC), bulk density, diameter at breast height (dbh), mangrove, percent cover, soils, spherical densiometer, tree height, Fewer tags

Sediment macrofaunal composition and sediment geochemistry of deep-sea coral habitats after the Deepwater Horizon oil spill in the Gulf of Mexico, 2010-2016

Deep-sea corals create complex habitats that support distinct sediment communities. Several deep-sea coral habitats were impacted by the 2010 Deepwater Horizon spill, and recovery of associated sediment communities may take several years. While spill-associated organic enrichment may lead to increased abundances of tolerant taxa, toxic effects of the spill may lead to declines in sensitive groups. However, temporal variability in coral-associated sediment macrofauna is unknown and represents an important consideration for post-spill community assessments. Here we examine how the macrofaunal communities change over time at impacted and reference sites. From 2010 to 2016, we examined macrofaunal communities at multiple...

Categories: Data; Tags: Ecology, Gulf of Mexico, USGS Science Data Catalog (SDC), benthos, biota

Sample collection metadata for the FK190612 expedition along the Cascadia margin in June 2019

These are metadata related to the collection of samples on the FK190612 research expedition in the north Pacific Ocean along the Cascadia margin in June 2019. Samples were collected to examine characteristics of methane emissions from seafloor seeps at the edge of hydrate stability and the associated communities.

Categories: Data; Tags: Aquatic Biology, Astoria Canyon, Cascadia margin, Coquille, Ecology, All tags... Geochemistry, Grays Canyon, Heceta, Marine Geology, Nehalem, Pacific, Seep, USGS Science Data Catalog (SDC), biota, ecology, gas hydrate resources, Fewer tags

Soil surface elevation change and vertical accretion data to support the Fruit Farm Creek Mangrove Restoration Project, Rookery Bay National Estuarine Research Reserve, Marco Island, Florida, 2015-2019

These data represent surface elevation change and vertical accretion time series collected from a series of degraded tidal wetland sites near Goodland, Florida, USA. Surface elevation was measured using a combination of rod surface elevation tables (SETs) and feldspar marker horizons. Here, we document mangrove forest and soil structural changes within transects established in tidally restricted areas on Marco Island (Collier County, Florida, USA), which has broad swaths of dead-standing or unhealthy mangroves. Original data were collected in January 2015, and re-collected in August 2015, January 2016, July 2016, January 2017, June 2018 and June 2019.

Categories: Data; Tags: Collier County, Florida, Goodland, Land Use Change, Marco Island, All tags... USA, USGS Science Data Catalog (SDC), accretion, elevation, shoreline accretion, Fewer tags