Environmental Engineering Reference
In-Depth Information
be listed as follows: (i) Investigation on the relationship between Chl
a
and DOM
and POM in a variety of waters, with high and low DOM contents; (ii) Investigation
on phytoplankton photosynthesis along with measurement of Chl
a
, DIC, CO
2
,
H
2
O
2
and dissolved O
2
. Note that H
2
O
2
is photochemically produced from dis-
nificant correlation has been found between dissolved O
2
and benthic or sestonic
Chl concentration (Heiskary and Markus
2003
; Miltner
2010
), possibly due to H
2
O
2
generation from dissolved O
2
followed by in algal production. (iii) New model stud-
ies are required, dealing with the mechanism of SCM and DCM formation and elu-
cidating the role of organic matter (DOM and POM), solar radiation, photoinduced
formation of DIC, CO
2
and H
2
O
2
, and water temperature. Note that solar radiation
and water temperature are vital for the photoinduced generation of H
2
O
2
, DIC, CO
2
and nutrients from DOM and POM (see chapter
“
Photosynthesis in Nature: A New
addition of phytoplankton/algae/cyanobacteria (POM) Such a study could elucidate
the effect and role of POM on the photosynthesis, allowing a distinction between
photosynthetic processes conducted by DOM and POM. (v) Study of changes of
dissolved O
2
concentration along with those of H
2
O
2
and Chl
a
. (vi) Elucidation of
the role and contribution of H
2
O
2
, produced either intramolecularly or extracellu-
larly on photosynthesis, in aquatic phytoplankton and higher plants.
8 Nomenclature
CDOM Chromophoric dissolved organic matter
Chl
Chlorophyll
Chls
Chlorophylls
DCM
Deep chlorophyll
a
maximum
−
, and CO
3
2
−
)
DIC
Dissolved inorganic carbon (dissolved CO
2
, H
2
CO
3
, HCO
3
DOM Dissolved organic matter
FDOM Fluorescent dissolved organic matter
H
2
O
2
Hydrogen peroxide
NCC
Nonfluorescent chlorophyll catabolites
1
O
2
Singlet oxygen
−
O
2
Super oxide anion radical
HO
•
Hydroxyl radical
OM
Organic matter
P
fcc
Primary fluorescent chlorophyll catabolite
POM
Particulate organic matter
RCC
Red chlorophyll catabolite
RCCR
Red Chl catabolite reductase
ROS
Reactive oxygen species
SCM
Surface or subsurface chlorophyll
a
maximum
WT
Water temperature
