scholarly journals Primary production dynamics in seagrass beds of Mississippi Sound: the contributions of seagrass epiphytic algae, sand microflora, and phytoplankton

1992 ◽  
Vol 87 ◽  
pp. 161-171 ◽  
Author(s):  
CA Moncreiff ◽  
MJ Sullivan ◽  
AE Daehnick
Keyword(s):  
Primary Production ◽  
Seagrass Beds ◽  
Epiphytic Algae ◽  
Mississippi Sound ◽  
Production Dynamics

Primary Production of the Sand Microflora in Seagrass Beds of Mississippi Sound

1992 ◽  
Vol 35 (2) ◽  
Author(s):  
A. E. Daehnick ◽  
M. J. Sullivan ◽  
C. A. Moncreiff
Keyword(s):  
Primary Production ◽  
Seagrass Beds ◽  
Mississippi Sound

Seagrass Ecosystems of Andaman and Nicobar Islands: Status and Future Perspective

2020 ◽  
Vol 7 (4) ◽  
pp. 169-174
Author(s):  
Chatragadda Ramesh ◽  
Raju Mohanraju
Keyword(s):  
Water Quality ◽  
Primary Production ◽  
Environmental Changes ◽  
Future Perspective ◽  
Marine Biodiversity ◽  
Seagrass Beds ◽  
Seagrass Meadows ◽  
Seagrass Ecosystem ◽  
Seagrass Ecosystems ◽  
Nicobar Islands

Seagrasses are unique marine flowering plants that play an important ecological role by yielding primary production and carbon sequestration to the marine environment. Seagrass ecosystems are rich in organic matter, supporting the growth of bio-medically important epi and endophytic microorganisms and harbor rich marine biodiversity. They are an essential food source for endangered Andaman state animal Dugongs. Seagrasses are very sensitive to water quality changes, and therefore they serve as ecological bio-indicators for environmental changes. The benthic components in and around the seagrass beds support a significant food chain for other Micro and organisms apart from fishery resources. The epiphytic bacterial communities of the leaf blades support the sustenance against the diseases. Recent reports have shown that the loss of seagrass beds in tropical and temperate regions emphasizes the depletion of these resources, and proper management of seagrass is urgent. The decline of seagrass will impact primary production, biodiversity, and adjacent ecosystems, such as reefs. Therefore, restoring the seagrass meadows could be possible with effective implementing management programs, including seagrass meadows in marine protected areas, restoration projects, seagrass transplantation, implementation of legislative rules, monitoring coastal water quality and human activities in the coastal zone. Lacunas on the seagrass ecosystem management in Andaman & Nicobar Islands are addressed.

Assessment of the gross primary production dynamics of a Mediterranean holm oak forest by remote sensing time series analysis

2015 ◽  
Vol 89 (3) ◽  
pp. 491-510 ◽  
Author(s):  
Víctor Cicuéndez ◽  
Javier Litago ◽  
Margarita Huesca ◽  
Manuel Rodriguez-Rastrero ◽  
Laura Recuero ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Time Series ◽  
Time Series Analysis ◽  
Primary Production ◽  
Gross Primary Production ◽  
Holm Oak ◽  
Oak Forest ◽  
Series Analysis ◽  
Production Dynamics ◽  
Sensing Time

scholarly journals Evolution of primary production and its drivers on the Lebanese coast between 1986 and 2013

2020 ◽  
Vol 20 (4) ◽  
pp. 207-217
Author(s):  
Ali Fadel ◽  
Lama Salameh ◽  
Malak Kanj ◽  
Ahmad Kobaissi
Keyword(s):  
Primary Production ◽  
Phytoplankton Community ◽  
Controlling Factors ◽  
Sea Surface ◽  
Biogeochemical Model ◽  
Average Temperature ◽  
Biogeochemical Models ◽  
Increasing Trend ◽  
Production Dynamics ◽  
Lebanese Coast

AbstractPhysical-biogeochemical models help us to understand the dynamics and the controlling factors of primary production. In this study, the outputs of a validated hydrodynamic and biogeochemical model were used to elucidate the primary production dynamics between 1992 and 2012 for three studied sites on the Lebanese coast: Naqoura, Beirut, and Tripoli. The results showed that primary production presents a homogeneous spatial distribution along the Lebanese coastline. The phytoplankton community has a low optimal temperature. The thermocline develops in March, with maximum stratification in August and fades in October. Chlorophyll, dissolved oxygen and salinity were positively correlated throughout the water column. A significant increasing trend of sea surface temperature was found on the Lebanese coast over 27 years, between 1986 and 2013. Annual averages increased from 22°C in 1986 to 23.1°C in 2013 with the highest recorded average temperature of 23.7 °C in 2010.

Primary production of seagrass beds in South Sulawesi (Indonesia): a comparison of habitats, methods and species

1993 ◽  
Vol 46 (1) ◽  
pp. 67-90 ◽  
Author(s):  
Paul L.A. Erftemeijer ◽  
Ronald Osinga ◽  
Astrid E. Mars
Keyword(s):  
Primary Production ◽  
Seagrass Beds ◽  
South Sulawesi

Ecology of Botany Bay. II. Aspects of the Feeding Ecology of the Fanbellied Leatherjacket, Monacanthus chinensis (Pisces : Monacanthidae), in Pisidonia australis Seagrass Beds in Quibray Bay, Botany Bay, New South Wales

1979 ◽  
Vol 30 (3) ◽  
pp. 387 ◽  
Author(s):  
MJ Conacher ◽  
WJR Lanzing ◽  
AWD Larkum
Keyword(s):  
New South ◽  
Gut Contents ◽  
Seagrass Beds ◽  
Labile Carbon ◽  
Epiphytic Algae ◽  
Food Items ◽  
South Wales ◽  
Carbon Compounds ◽  
14C Labelling ◽  
Tide Height

The fanbellied leatherjacket, M. chinensis, was found to ingest fresh seagrass as a major part of its diet. Other important food items were gammarid amphipods, carid shrimps and several species of epiphytic algae. All food items were of seagrass bed origin. Microscopic examination of gut contents suggested that seagrass and algae did not appear to be digested by the fish, but 14C-labelling of the plants showed that significant amounts of the labile carbon compounds were removed and assimilated during digestion. The fanbellied leatherjacket was found to feed in the seagrass beds during the day, probably relying on eyesight for detecting food. Variations in tide height did not seem to affect their feeding pattern. The amounts of seagrass, algae, amphipods and shrimps removed by M. chinensis in Quibray Bay were calculated and compared with the availability of each of these foods. Grazing by M. chinensis had little effect on seagrass and algae production rates and standing crops, but probably had a significant influence on carid shrimp and amphipod populations.

Phytoplankton biomass and primary production dynamics in Lake Kariba

2012 ◽  
Vol 17 (4) ◽  
pp. 275-289 ◽  
Author(s):  
Ndebele-Murisa M. Regina ◽  
Musil C. Frank ◽  
Raitt L. Miles
Keyword(s):  
Primary Production ◽  
Phytoplankton Biomass ◽  
Lake Kariba ◽  
Production Dynamics

Primary production dynamics and climate variability: ecological consequences in semiarid Chile

2009 ◽  
Vol 15 (5) ◽  
pp. 1116-1126 ◽  
Author(s):  
MARIANO DE LA MAZA ◽  
MAURICIO LIMA ◽  
PETER L. MESERVE ◽  
JULIO R. GUTIÉRREZ ◽  
FABIAN M. JAKSIC
Keyword(s):  
Climate Variability ◽  
Primary Production ◽  
Ecological Consequences ◽  
Production Dynamics

Analysis of Stomach Contents of Dugongs From Queensland.

1982 ◽  
Vol 9 (1) ◽  
pp. 55 ◽  
Author(s):  
H Marsh ◽  
PW Channells ◽  
GE Heinsohn ◽  
J Morrissey
Keyword(s):  
Quantitative Analysis ◽  
Stomach Contents ◽  
Seagrass Beds ◽  
Epiphytic Algae ◽  
Island Area ◽  
Generic Composition ◽  
Torres Strait

Quantitative analysis of samples of the stomach contents of 95 north Queensland dugongs, Dugong dugon, (63 from the Townsville area, 30 from the Mornington Island area and 2 from the Torres Strait area) and one dugong from south Queensland indicates that the diet of most consisted almost entirely of seagrasses of all available genera. Halodule was found in 95% of stomachs, followed by Halophila (89%). Cymodocea (61%) and Thalassia (39%). Seagrass rhizomes were present in all stomachs examined including that of a newborn calf. The generic composition of the stomach contents probably reflects that of the seagrass beds in the areas where the dugongs were captured and is not necessarily indicative of discrimination in selecting food. Non-epiphytic algae occurred in 51% of the stomachs, usually in small amounts. When seagrasses were abundant, dugongs appeared to eat algae often but only in very small amounts (<2% of food volume). Dugongs do not appear to be well adapted to utilize algae as food and probably usually consume them incidentally with seagrasses. Many of the dugongs which drowned in the shark nets near Townsville in the year after a cyclone had severely damaged the seagrass beds in the area, had eaten more of the seagrasses Cymodocea and Thalassia, less of the seagrasses Halodule and Halophila, and more algae than animals which died in other years.

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