Development of ecosystem indicators for the Suwannee River estuary: Oyster reef habitat quality along a salinity gradient

2006 ◽  
Vol 29 (3) ◽  
pp. 353-360 ◽  
Author(s):  
Derk C. Bergquist ◽  
Jason A. Hale ◽  
Patrick Baker ◽  
Shirley M. Baker
Keyword(s):  
Habitat Quality ◽  
Oyster Reef ◽  
Salinity Gradient ◽  
River Estuary ◽  
Reef Habitat ◽  
Suwannee River ◽  
Ecosystem Indicators

scholarly journals Salinity and freshwater discharge determine rotifer distribution at the Mossoró River Estuary (Semiarid Region of Brazil)

2010 ◽  
Vol 70 (3) ◽  
pp. 551-557 ◽  
Author(s):  
AMA. Medeiros ◽  
JEL. Barbosa ◽  
PR. Medeiros ◽  
RM. Rocha ◽  
LF. Silva
Keyword(s):  
Species Richness ◽  
Rainy Season ◽  
Salinity Gradient ◽  
River Estuary ◽  
Positive Influence ◽  
Freshwater Discharge ◽  
The Other ◽  
Semiarid Region ◽  
Inverse Estuary ◽  
Species Richness And Abundance

The present study aimed at evaluating differences in rotifer distribution in three estuarine zones in an inverse estuary located in the Semiarid Region of Brazil. Zones were chosen based on their proximity to the ocean and river border as a means of reflecting a horizontal salinity gradient. High freshwater discharge during the rainy season was the major determinant of rotifer composition. On the other hand, due to higher salinity values during the dry season, very low values of species richness and abundance were observed in all zones. Therefore, the study highlights the constraints of salinity and the positive influence of seasonality and river proximity on rotifer species in a semiarid estuarine environment.

Using Fish Behavior to Assess Habitat Quality of a Restored Oyster Reef

2014 ◽  
Vol 32 (2) ◽  
pp. 140-143 ◽  
Author(s):  
C. A. Layman ◽  
Z. R. Jud ◽  
D. Albrey Arrington ◽  
D. Sabin
Keyword(s):  
Habitat Quality ◽  
Oyster Reef ◽  
Fish Behavior

scholarly journals Shifts of Bacterioplankton Metabolic Profiles along the Salinity Gradient in a Subtropical Estuary

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Hidetoshi Urakawa ◽  
Jaffar Ali ◽  
Rheannon D. J. Ketover ◽  
Spencer D. Talmage ◽  
Juan C. Garcia ◽  
...  
Keyword(s):  
Salinity Gradient ◽  
Water Discharge ◽  
River Estuary ◽  
Metabolic Profiles ◽  
Wet Season ◽  
Biolog Ecoplates ◽  
Utilization Patterns ◽  
Subtropical Estuary ◽  
Discharge Patterns ◽  
Bacterioplankton Communities

Understanding the biodegradation potential of river bacterioplankton communities is crucial for watershed management. We investigated the shifts in bacterioplankton metabolic profiles along the salinity gradient of the Caloosahatchee River Estuary, Florida. The carbon source utilization patterns of river bacterioplankton communities were determined by using Biolog EcoPlates. The number of utilized substrates was generally high in the upstream freshwater dominated zone and low in the downstream zone, suggesting a shift in metabolic profiles among bacterioplankton assemblages along the estuarine gradient. The prokaryotic cell numbers also decreased along the estuarine salinity gradient. Seasonal and site-specific differences were found in the numbers of utilized substrates, which were similar in summer and fall (wet season) and winter and spring (dry season). Bacterioplankton assemblages in summer and fall showed more versatile substrate utilization patterns than those of winter and spring communities. Therefore, our data suggest that microbial metabolic patterns in the subtropical estuary are likely influenced by the water discharge patterns created by dry and wet seasons along the salinity gradient.

scholarly journals Implications of Nutrient Enrichment and Related Environmental Impacts in the Pearl River Estuary, China: Characterizing the Seasonal Influence of Riverine Input

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3245
Author(s):  
Lixia Niu ◽  
Pieter van Gelder ◽  
Xiangxin Luo ◽  
Huayang Cai ◽  
Tao Zhang ◽  
...  
Keyword(s):  
Nutrient Enrichment ◽  
River Discharge ◽  
Nutrient Dynamics ◽  
Southern China ◽  
Salinity Gradient ◽  
River Estuary ◽  
Pearl River Estuary ◽  
Pearl River ◽  
The Pearl River Estuary ◽  
The Pearl River

The Pearl River estuary is an ecologically dynamic region located in southern China that experiences strong gradients in its biogeochemical properties. This study examined the seasonality of nutrient dynamics, identified related environmental responses, and evaluated how river discharge regulated nutrient sink and source. The field investigation showed significant differences of dissolved nutrients with seasons and three zones of the estuary regarding the estuarine characteristics. Spatially, nutrients exhibited a clear decreasing trend along the salinity gradient; temporally, their levels were obviously higher in summer than other seasons. The aquatic environment was overall eutrophic, as a result of increased fluxes of nitrogen and silicate. This estuary was thus highly sensitive to nutrient enrichment and related pollution of eutrophication. River discharge, oceanic current, and atmospheric deposition distinctly influenced the nutrient status. These factors accordingly may influence phytoplankton that are of importance in coastal ecosystems. Phytoplankton (in terms of chlorophyll) was potentially phosphate limited, which then more frequently resulted in nutrient pollution and blooms. Additionally, the nutrient sources were implied according to the cause–effect chains between nutrients, hydrology, and chlorophyll, identified by the PCA-generated quantification. Nitrogen was constrained by marine-riverine waters and their mutual increase-decline trend, and a new source was supplemented along the transport from river to sea, while a different source of terrestrial emission from coastal cities contributed to phosphate greatly.

Denitrification rates measured along a salinity gradient in the eutrophic Neuse River estuary, North Carolina, USA

Estuaries ◽  
2005 ◽  
Vol 28 (4) ◽  
pp. 608-619 ◽  
Author(s):  
John M. Fear ◽  
Suzanne P. Thompson ◽  
Thomas E. Gallo ◽  
Hans W. Paerl
Keyword(s):  
North Carolina ◽  
Salinity Gradient ◽  
River Estuary ◽  
Neuse River Estuary ◽  
Neuse River

Microzooplankton grazing and the control of phytoplankton biomass in the Suwannee River estuary, USA

Hydrobiologia ◽  
2009 ◽  
Vol 632 (1) ◽  
pp. 127-137 ◽  
Author(s):  
Erin L. Quinlan ◽  
Christina H. Jett ◽  
Edward J. Phlips
Keyword(s):  
Phytoplankton Biomass ◽  
River Estuary ◽  
Suwannee River ◽  
Microzooplankton Grazing

Assessing the benthic habitat quality in the Huanghe (Yellow River) Estuary and its adjacent areas using AMBI and M-AMBI

2014 ◽  
Vol 33 (9) ◽  
pp. 117-124 ◽  
Author(s):  
Xianxiang Luo ◽  
Juan Zhang ◽  
Jianqiang Yang ◽  
Wenpeng Song ◽  
Wenlin Cui
Keyword(s):  
Habitat Quality ◽  
Yellow River ◽  
River Estuary ◽  
Yellow River Estuary ◽  
Benthic Habitat
Sign in / Sign up

Export Citation Format

Share Document