Mapping phytoplankton chlorophyll in turbid, Case 2 estuarine and coastal waters

John Schalles, Christine M. Hladik

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We tested variants of semianalytic algorithms for estimating phytoplankton chlorophyll pigment in Case 2 waters. Since 2002 we sampled 279 stations in 22 estuaries, bays, and near shore at seven National Estuarine Research Reserves between Delaware and Texas (USA). The following median values and ranges were observed: chlorophyll a = 17.4 μg/L3 (0.2-490.1); total suspended solids = 23.4 mg/L dry weight (0.7-191.1); and CDOM absorbance (440 nm) = 3.11 m-1 (0.00-21.08). Spectroradiometers measured volume reflectance at each station. Sampling was designed to capture upriver to coastal mixing gradients. Algorithms utilized features in the red and lower NIR, with interference adjustments for CDOM absorption and non-algal particle scatter using bands in either the green (550 nm) or NIR between 723-739 nm. Data from an additional 53 inland lake, reservoir, and river stations were included for comparison in algorithm testing. Our best two algorithms were re-parameterized using matchups with AISA Eagle imagery. Examples of pigment classification using these adjusted models are presented for five studies: dinoflagellate bloom in Maryland, tidal watershed in Georgia, estuarine reserve and neighboring refinery in Mississippi, shallow ponds important to Whooping Cranes in Texas, and a transect capturing transitions between the Nueces River and Corpus Christi Bay in Texas. These analyses were useful in addressing issues important to coastal management.

Original languageEnglish
Pages (from-to)169-191
Number of pages23
JournalIsrael Journal of Plant Sciences
Volume60
Issue number1-2
DOIs
StatePublished - Dec 1 2012

Fingerprint

brackish water
coastal water
chlorophyll
phytoplankton
pigment
pigments
spectroradiometers
rivers
total suspended solids
crane
eagles
coastal zone management
absorbance
river
dinoflagellate
reflectance
chlorophyll a
algal bloom
imagery
transect

All Science Journal Classification (ASJC) codes

  • Plant Science
  • Agronomy and Crop Science
  • Ecology, Evolution, Behavior and Systematics

Cite this

Mapping phytoplankton chlorophyll in turbid, Case 2 estuarine and coastal waters. / Schalles, John; Hladik, Christine M.

In: Israel Journal of Plant Sciences, Vol. 60, No. 1-2, 01.12.2012, p. 169-191.

Research output: Contribution to journalArticle

@article{fc057a7a9c0b4f008bba5babd530fc76,
title = "Mapping phytoplankton chlorophyll in turbid, Case 2 estuarine and coastal waters",
abstract = "We tested variants of semianalytic algorithms for estimating phytoplankton chlorophyll pigment in Case 2 waters. Since 2002 we sampled 279 stations in 22 estuaries, bays, and near shore at seven National Estuarine Research Reserves between Delaware and Texas (USA). The following median values and ranges were observed: chlorophyll a = 17.4 μg/L3 (0.2-490.1); total suspended solids = 23.4 mg/L dry weight (0.7-191.1); and CDOM absorbance (440 nm) = 3.11 m-1 (0.00-21.08). Spectroradiometers measured volume reflectance at each station. Sampling was designed to capture upriver to coastal mixing gradients. Algorithms utilized features in the red and lower NIR, with interference adjustments for CDOM absorption and non-algal particle scatter using bands in either the green (550 nm) or NIR between 723-739 nm. Data from an additional 53 inland lake, reservoir, and river stations were included for comparison in algorithm testing. Our best two algorithms were re-parameterized using matchups with AISA Eagle imagery. Examples of pigment classification using these adjusted models are presented for five studies: dinoflagellate bloom in Maryland, tidal watershed in Georgia, estuarine reserve and neighboring refinery in Mississippi, shallow ponds important to Whooping Cranes in Texas, and a transect capturing transitions between the Nueces River and Corpus Christi Bay in Texas. These analyses were useful in addressing issues important to coastal management.",
author = "John Schalles and Hladik, {Christine M.}",
year = "2012",
month = "12",
day = "1",
doi = "10.1560/IJPS.60.1-2.169",
language = "English",
volume = "60",
pages = "169--191",
journal = "Israel Journal of Plant Sciences",
issn = "0792-9978",
publisher = "Science From Israel",
number = "1-2",

}

TY - JOUR

T1 - Mapping phytoplankton chlorophyll in turbid, Case 2 estuarine and coastal waters

AU - Schalles, John

AU - Hladik, Christine M.

PY - 2012/12/1

Y1 - 2012/12/1

N2 - We tested variants of semianalytic algorithms for estimating phytoplankton chlorophyll pigment in Case 2 waters. Since 2002 we sampled 279 stations in 22 estuaries, bays, and near shore at seven National Estuarine Research Reserves between Delaware and Texas (USA). The following median values and ranges were observed: chlorophyll a = 17.4 μg/L3 (0.2-490.1); total suspended solids = 23.4 mg/L dry weight (0.7-191.1); and CDOM absorbance (440 nm) = 3.11 m-1 (0.00-21.08). Spectroradiometers measured volume reflectance at each station. Sampling was designed to capture upriver to coastal mixing gradients. Algorithms utilized features in the red and lower NIR, with interference adjustments for CDOM absorption and non-algal particle scatter using bands in either the green (550 nm) or NIR between 723-739 nm. Data from an additional 53 inland lake, reservoir, and river stations were included for comparison in algorithm testing. Our best two algorithms were re-parameterized using matchups with AISA Eagle imagery. Examples of pigment classification using these adjusted models are presented for five studies: dinoflagellate bloom in Maryland, tidal watershed in Georgia, estuarine reserve and neighboring refinery in Mississippi, shallow ponds important to Whooping Cranes in Texas, and a transect capturing transitions between the Nueces River and Corpus Christi Bay in Texas. These analyses were useful in addressing issues important to coastal management.

AB - We tested variants of semianalytic algorithms for estimating phytoplankton chlorophyll pigment in Case 2 waters. Since 2002 we sampled 279 stations in 22 estuaries, bays, and near shore at seven National Estuarine Research Reserves between Delaware and Texas (USA). The following median values and ranges were observed: chlorophyll a = 17.4 μg/L3 (0.2-490.1); total suspended solids = 23.4 mg/L dry weight (0.7-191.1); and CDOM absorbance (440 nm) = 3.11 m-1 (0.00-21.08). Spectroradiometers measured volume reflectance at each station. Sampling was designed to capture upriver to coastal mixing gradients. Algorithms utilized features in the red and lower NIR, with interference adjustments for CDOM absorption and non-algal particle scatter using bands in either the green (550 nm) or NIR between 723-739 nm. Data from an additional 53 inland lake, reservoir, and river stations were included for comparison in algorithm testing. Our best two algorithms were re-parameterized using matchups with AISA Eagle imagery. Examples of pigment classification using these adjusted models are presented for five studies: dinoflagellate bloom in Maryland, tidal watershed in Georgia, estuarine reserve and neighboring refinery in Mississippi, shallow ponds important to Whooping Cranes in Texas, and a transect capturing transitions between the Nueces River and Corpus Christi Bay in Texas. These analyses were useful in addressing issues important to coastal management.

UR - http://www.scopus.com/inward/record.url?scp=84874281153&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84874281153&partnerID=8YFLogxK

U2 - 10.1560/IJPS.60.1-2.169

DO - 10.1560/IJPS.60.1-2.169

M3 - Article

AN - SCOPUS:84874281153

VL - 60

SP - 169

EP - 191

JO - Israel Journal of Plant Sciences

JF - Israel Journal of Plant Sciences

SN - 0792-9978

IS - 1-2

ER -