Next Article in Journal
A Linear Feature-Based Approach for the Registration of Unmanned Aerial Vehicle Remotely-Sensed Images and Airborne LiDAR Data
Next Article in Special Issue
Satellite SST-Based Coral Disease Outbreak Predictions for the Hawaiian Archipelago
Previous Article in Journal
Treating the Hooking Effect in Satellite Altimetry Data: A Case Study along the Mekong River and Its Tributaries
Previous Article in Special Issue
Validation of Reef-Scale Thermal Stress Satellite Products for Coral Bleaching Monitoring
Article Menu

Export Article

Open AccessArticle
Remote Sens. 2016, 8(2), 86; doi:10.3390/rs8020086

Characterization of Available Light for Seagrass and Patch Reef Productivity in Sugarloaf Key, Lower Florida Keys

1
Institute for Marine Remote Sensing, College of Marine Science, University of South Florida, 140 7th Ave. S., St. Petersburg, FL 33701, USA
2
Florida International University, 11200 SW 8th St, Miami, FL 33174, USA
3
U.S. Geological Survey, 600 Fourth Street South, St. Petersburg, FL 33701, USA
4
National Commission for Knowledge and Use of Biodiversity (CONABIO), Liga Periferico—Insurgentes Sur 4903, Parques del Pedregal, Tlalpan, Mexico, D.F. 14010, Mexico
5
UAV Collaborative, NASA Research Park, Mail Stop 18-2, Moffett Field, CA 94035, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Stuart Phinn, Chris Roelfsema, Xiaofeng Li and Prasad S. Thenkabail
Received: 16 September 2015 / Revised: 4 January 2016 / Accepted: 18 January 2016 / Published: 23 January 2016
(This article belongs to the Special Issue Remote Sensing for Coral Reef Monitoring)
View Full-Text   |   Download PDF [2468 KB, uploaded 23 January 2016]   |  

Abstract

Light availability is an important factor driving primary productivity in benthic ecosystems, but in situ and remote sensing measurements of light quality are limited for coral reefs and seagrass beds. We evaluated the productivity responses of a patch reef and a seagrass site in the Lower Florida Keys to ambient light availability and spectral quality. In situ optical properties were characterized utilizing moored and water column bio-optical and hydrographic measurements. Net ecosystem productivity (NEP) was also estimated for these study sites using benthic productivity chambers. Our results show higher spectral light attenuation and absorption, and lower irradiance during low tide in the patch reef, tracking the influx of materials from shallower coastal areas. In contrast, the intrusion of clearer surface Atlantic Ocean water caused lower values of spectral attenuation and absorption, and higher irradiance in the patch reef during high tide. Storms during the studied period, with winds >10 m·s−1, caused higher spectral attenuation values. A spatial gradient of NEP was observed, from high productivity in the shallow seagrass area, to lower productivity in deeper patch reefs. The highest daytime NEP was observed in the seagrass, with values of almost 0.4 g·O2·m−2·h−1. Productivity at the patch reef area was lower in May than during October 2012 (mean = 0.137 and 0.177 g·O2·m−2·h−1, respectively). Higher photosynthetic active radiation (PAR) levels measured above water and lower light attenuation in the red region of the visible spectrum (~666 to ~699 nm) had a positive correlation with NEP. Our results indicate that changes in light availability and quality by suspended or resuspended particles limit benthic productivity in the Florida Keys. View Full-Text
Keywords: Florida Keys; corals; seagrass; light spectrum; benthos productivity Florida Keys; corals; seagrass; light spectrum; benthos productivity
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Toro-Farmer, G.; Muller-Karger, F.E.; Vega-Rodríguez, M.; Melo, N.; Yates, K.; Cerdeira-Estrada, S.; Herwitz, S.R. Characterization of Available Light for Seagrass and Patch Reef Productivity in Sugarloaf Key, Lower Florida Keys. Remote Sens. 2016, 8, 86.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Remote Sens. EISSN 2072-4292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top