Competition Between Atmospheric and Tidally Attenuated Forcing in an Elongated Coastal Lagoon

2021 ◽  
Author(s):  
Arnoldo Valle-Levinson ◽  
Cecilia Enriquez ◽  
Ismael Mariño
Keyword(s):  
Coastal Lagoon

scholarly journals Boat Noise and Black Drum Vocalizations in Mar Chiquita Coastal Lagoon (Argentina)

2021 ◽  
Vol 9 (1) ◽  
pp. 44
Author(s):  
Maria Ceraulo ◽  
María Paz Sal Moyano ◽  
Fernando Jose Hidalgo ◽  
María Cielo Bazterrica ◽  
Salvatore Mazzola ◽  
...  
Keyword(s):  
Fish Species ◽  
Coastal Lagoon ◽  
Acoustic Method ◽  
Potential Effect ◽  
Reproductive Period ◽  
Anthropogenic Noise ◽  
Marine Biota ◽  
Call Rate ◽  
Noise Frequency ◽  
Passive Acoustic

Human-generated underwater noise and its effect on marine biota is recognized as an important issue. Boat noise can affect the communication success of fish species that use sounds for spawning purposes. During the reproductive period, males of the black drum Pogonias spp. produce calls ranging from 90 Hz to 300 Hz. In the Mar Chiquita coastal lagoon (Buenos Aires, Argentina), Pogonias courbina is one of the primary fishing species. Although no regulation is directly applied to protect it, a ban protects the reproductive period of other fish species during weekdays. Here, we investigated the potential effect of boat noise on P. courbina vocalizations through a passive acoustic method. Acoustic data were collected, and P. courbina calls were identified and counted. The files with boat noise passages were categorized into classes according to their noise frequency range (A = below 700 Hz, B = over 700 Hz, and C = below and above 700 Hz). The fish call rate was lower in files where boat noise overlapped the fish call frequency (Classes A and C). Only boat noise from Class C was significantly reduced during days with the active fishing ban. These results suggest that anthropogenic noise may affect the P. courbina call rate and underline the importance of including the evaluation of anthropogenic noise in the current management of the area.

Non-conservative removal of dissolved rhenium from a coastal lagoon: Clay adsorption versus biological uptake

2021 ◽  
pp. 120378
Author(s):  
Mohd Danish ◽  
Gyana Ranjan Tripathy ◽  
Sirsha Mitra ◽  
Rakesh Kumar Rout ◽  
Shubhangi Raskar
Keyword(s):  
Coastal Lagoon ◽  
Biological Uptake

A Trophic Model for a Periodically Closed Coastal Lagoon System in the Southern Mexican Pacific

Wetlands ◽  
2021 ◽  
Vol 41 (5) ◽  
Author(s):  
Jesús M. López-Vila ◽  
Juan J. Schmitter-Soto ◽  
Ernesto Velázquez-Velázquez
Keyword(s):  
Coastal Lagoon ◽  
Mexican Pacific ◽  
Lagoon System

Landfall season is critical to the impact of a cyclone on a monsoon-regulated tropical coastal lagoon

2021 ◽  
Vol 770 ◽  
pp. 145235
Author(s):  
Deepak R. Mishra ◽  
Abhishek Kumar ◽  
Pradipta R. Muduli ◽  
Tamoghna Acharyya ◽  
Prasannajit Acharya ◽  
...  
Keyword(s):  
Coastal Lagoon ◽  
Tropical Coastal Lagoon ◽  
The Impact

The colonization of a coastal lagoon by a mangrove ecosystem: Benefit or threat to the lagoon?

2021 ◽  
Vol 171 ◽  
pp. 103362
Author(s):  
Robson Acha Leite ◽  
Gabriel Nuto Nóbrega ◽  
Luiz Roberto Zamith Coelho Leal ◽  
Mara Cintia Kiefer ◽  
Abilio Soares-Gomes
Keyword(s):  
Coastal Lagoon ◽  
Mangrove Ecosystem

scholarly journals Extreme Meteorological Events in a Coastal Lagoon Ecosystem: The Ria de Aveiro Lagoon (Portugal) Case Study

2021 ◽  
Vol 9 (7) ◽  
pp. 727
Author(s):  
José Fortes Lopes ◽  
Carina Lurdes Lopes ◽  
João Miguel Dias
Keyword(s):  
Water Temperature ◽  
Coastal Lagoon ◽  
Early Summer ◽  
Extreme Weather Events ◽  
Climate Change Scenarios ◽  
State Variables ◽  
Ria De Aveiro ◽  
Physical Conditions ◽  
Weather Events ◽  
The Impact

Extreme weather events (EWEs) represent meteorological hazards for coastal lagoon hydrodynamics, of which intensity and frequency are increasing over the last decades as a consequence of climate changes. The imbalances they generated should affect primarily vulnerable low-lying areas while potentially disturbing the physical balances (salt and water temperature) and, therefore, the ecosystem equilibrium. This study arises from the need to assess the impact of EWEs on the Ria de Aveiro, a lagoon situated in the Portuguese coastal area. Furthermore, it was considered that those events occur under the frame of a future sea-level rise, as predicted by several climate change scenarios. Two EWEs scenarios, a dry and an extremely wet early summer reflecting past situations and likely to occur in the future, were considered to assess the departure from the system baseline functioning. It was used as a biogeochemistry model that simulates the hydrodynamics, as well as the baseline physical and biogeochemistry state variables. The dry summer scenario, corresponding to a significant reduction in the river’s inflow, evidences a shift of the system to a situation under oceanic dominance characterized by colder and saltier water (~18 °C; 34 PSU) than the baseline while lowering the concentration of the nutrients and reducing the phytoplankton population to a low-level limit. Under a wet summer scenario, the lagoon shifted to a brackish and warmer situation (~21 °C, <15 PSU) in a time scale of some tidal periods, driven by the combining effect of the tidal transport and the river’s inflow. Phytoplankton patterns respond to variability on local and short-term scales that reflect physical conditions within the lagoon, inducing nutrient-supported growth. Overall, the results indicate that EWEs generate local and transient changes in physical conditions (namely salinity and water temperature) in response to the characteristic variability of the lagoon’s hydrodynamics associated with a tidal-dominated system. Therefore, in addition to the potential impact of changing physical conditions on the ecosystem, saline intrusion along the lagoon or the transfer of brackish water to the mouth of the system are the main consequences of EWEs, while the main biogeochemistry changes tend to remain moderate.

Groundwater discharge rates and uncertainties in a coastal lagoon using a radon mass balance

2021 ◽  
pp. 126436
Author(s):  
Katie M. Coluccio ◽  
Isaac R. Santos ◽  
Luke C. Jeffrey ◽  
Leanne K. Morgan
Keyword(s):  
Mass Balance ◽  
Coastal Lagoon ◽  
Groundwater Discharge ◽  
Discharge Rates

Trace element bioaccumulation in the seagrass Cymodocea nodosa from a polluted coastal lagoon: Biomonitoring implications

2021 ◽  
Vol 166 ◽  
pp. 112209
Author(s):  
Loubna Boutahar ◽  
Free Espinosa ◽  
Juan Sempere-Valverde ◽  
Mohamed Selfati ◽  
Hocein Bazairi
Keyword(s):  
Trace Element ◽  
Coastal Lagoon ◽  
Cymodocea Nodosa
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