Locations of sampling sites for fish and seagrass impact study, Caribbean from 2014 (Fish and biogeochem hot spots project)

Website: https://www.bco-dmo.org/dataset/542774
Version: 2015-01-14

Project
» Fish aggregations and biogeochemical hot spots across regional environmental gradients (Fish and biogeochem hot spots)
ContributorsAffiliationRole
Layman, CraigNorth Carolina State University (NCSU)Principal Investigator
Copley, NancyWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Dataset Description

Locations of transects enumerating seagrass and benthic invertebrates conducted at multiple sites within three biogeographic regions in the Caribbean (The Bahamas, Hispaniola, and Grenada/St.Vincent/Grenadines).


Processing Description

BCO-DMO Processing:

version: 2015-01-14
- added lat/lon for site HH1

version: 2014-12-30
- added lat/lon for sites AC, HH, HL, MH, SC

version: 2014-12-10
- added conventional header with dataset name, PI name, version date
- renamed parameters to BCO-DMO standard
- added lab, lat, lon columns


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Parameters

ParameterDescriptionUnits
locationGeographical region of sampling unitless
sitelocation of sampling unitless
latlatitude; north is positive decimal degrees
lonlongitude; east is positive decimal degrees
site_codesampling site code unitless

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Deployments

Layman_2014

Website
Platform
Caribbean_nearshore
Start Date
2014-01-01
End Date
2014-11-30
Description
Coral reef surveys as part of the project "Fish aggregations and biogeochemical hot spots across regional environmental gradients".


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Project Information

Fish aggregations and biogeochemical hot spots across regional environmental gradients (Fish and biogeochem hot spots)

Coverage: Caribbean


Description from NSF award abstract: Consumers in marine ecosystems have long been acknowledged for their role in top-down regulation of ecosystems, but their influence through bottom-up pathways such as nutrient supply is often underappreciated and has not been integrated into models of coastal ecosystem dynamics. Yet, nutrient supply from consumers may be a regulating factor when consumers aggregate, such as fishes around structurally complex habitat. Examining this bottom-up mechanistic pathway is essential for a more holistic understanding of seagrass ecosystems, which are important and threatened globally. This study will address the following questions: (1) Does concentrated nutrient supply from consumers result in distinct biogeochemical hot spots in seagrass beds? and (2) How do consumer effects on ecosystem processes vary across regional environmental contexts where nutrient availability and fishing pressure vary? The PIs will conduct experiments at multiple sites within three biogeographic regions in the Caribbean (The Bahamas, Hispaniola, and Grenada/St.Vincent/Grenadines). The experiments will utilize artificial reefs that mimic natural patch reef habitats that concentrate animals at high densities. Response variables reflecting ecosystem processes (e.g., seagrass nutrient content, seagrass biomass, primary producer diversity) will be measured at reef sites and compared with control sites (seagrass sites without reefs). The spatial extent over which ecosystem processes may be affected, i.e., distance from artificial reef, will be quantified and used to detect ecological thresholds in ecosystem responses. Predictor variables, including measures of ambient nutrient availability, fish densities and fish grazing rates, will be used to contextualize the relative importance of consumer-mediated nutrient supply. The hierarchical experimental design and two-pronged analysis will characterize relationships across environmental gradients found among and within the biogeographic regions, facilitating a conceptual framework needed to predict when, where, and why consumer-mediated nutrient supply is an important control of ecosystems processes in seagrass beds.


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Funding

Funding SourceAward
NSF Division of Ocean Sciences (NSF OCE)

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