scholarly journals Commercial fisheries in a mega unregulated floodplain river: Assessment of the most favourable hydrological conditions for its preservation

2019 ◽  
Vol 96 (1) ◽  
pp. 59-73
Author(s):  
Ana Pia Rabuffetti ◽  
Luis A. Espínola ◽  
Elie Abrial ◽  
Mario L. Amsler ◽  
Martin C. M. Blettler ◽  
...  
Keyword(s):  
Commercial Fisheries ◽  
Hydrological Conditions ◽  
Floodplain River ◽  
River Assessment

Long-term Hydrologic Variability in a Large Subtropical Floodplain River: Effects on Commercial Fisheries

2016 ◽  
Vol 33 (3) ◽  
pp. 353-363 ◽  
Author(s):  
A. P. Rabuffetti ◽  
K. Górski ◽  
L. A. Espínola ◽  
E. Abrial ◽  
M. L. Amsler ◽  
...  
Keyword(s):  
Commercial Fisheries ◽  
Floodplain River ◽  
Hydrologic Variability

scholarly journals Biogenic gases in tropical floodplain river

2001 ◽  
Vol 44 (2) ◽  
pp. 141-147 ◽  
Author(s):  
Maria Victória Ramos Ballester ◽  
José Eduardo dos Santos
Keyword(s):  
Morphological Characteristics ◽  
Sao Paulo ◽  
Main Channel ◽  
Aerobic Respiration ◽  
São Paulo ◽  
Carbon Export ◽  
Hydrological Conditions ◽  
Floodplain River ◽  
Reducing Conditions ◽  
Tropical Floodplain

Analysis of the distribution of biogenic gases in the floodplain of the Mogi-Guaçu River (São Paulo, Brazil) enabled the establishment of a "redox hierarchy", in which the main channel was the most oxidizing environment, followed by Diogo Lake, with Infernão Lake having the most reducing conditions of the subsystems evaluated. Diogo Lake exported about 853.4 g C.m-2.year-1, of which, 14.6% was generated from methanogenesis and 36.7% by aerobic respiration. For Infernão Lake, these values were 2016 g C.m-2.year-1, 1.8 % and 41.5 %, respectively. Carbon export by these systems was predominantly in the form of CO2, which was responsible for the release of 728.78 g C.m-2.year-1 at Diogo Lake and 1979.72 g C.m-2. year-1 at Infernão Lake. Such patterns may result from the nature of the hydrological conditions, the action of the hydroperiod, and morphological characteristics of the environment.

Predicting changes in distribution of a large coastal shark in the face of the strengthening East Australian Current

2020 ◽  
Vol 642 ◽  
pp. 163-177 ◽  
Author(s):  
Y Niella ◽  
AF Smoothey ◽  
V Peddemors ◽  
R Harcourt
Keyword(s):  
Austral Summer ◽  
Conservation Strategies ◽  
Limiting Factor ◽  
Commercial Fisheries ◽  
East Australian Current ◽  
Spatial And Temporal Patterns ◽  
Marine Animals ◽  
Factors Affecting ◽  
Southeastern Australia ◽  
The Face

In the face of accelerating climate change, conservation strategies will need to consider how marine animals deal with forecast environmental change as well as ongoing threats. We used 10 yr (2009-2018) of data from commercial fisheries and a bather protection program along the coast of New South Wales (NSW), southeastern Australia, to investigate (1) spatial and temporal patterns of occurrence in bull sharks and (2) environmental factors affecting bull shark occurrence along the coast of NSW. Predicted future distribution for this species was modelled for the forecast strengthening East Australian Current. Bull sharks were mostly harvested in small to larger estuaries, with average depth and rainfall responsible for contrasting patterns for each of the fisheries. There was an increase in the occurrence of bull sharks over the last decade, particularly among coastal setline fisheries, associated with seasonal availability of thermal gradients >22°C and both westward and southward coastal currents stronger than 0.15 and 0.60 m s-1, respectively, during the austral summer. Our model predicts a 3 mo increase in the availability of favourable water temperatures along the entire coast of NSW for bull sharks by 2030. This coastline provides a uniquely favourable topography for range expansion in the face of a southerly shift of warmer waters, and habitat is unlikely to be a limiting factor for bull sharks in the future. Such a southerly shift in distribution has implications for the management of bull sharks both in commercial fisheries and for mitigation of shark-human interactions.

Status of Commercial Fisheries in the Kingdom of Bahrain

2013 ◽  
Vol 26 (1 (special Issue)) ◽  
pp. 220-238 ◽  
Author(s):  
Thamer S. Ali ◽  
Asma A. Abahussain
Keyword(s):  
Commercial Fisheries

Ensuring sanitary and epidemiological well-being under the aggravation of hydrological conditions (as an example of Tyumen Region)

2017 ◽  
pp. 44-47
Author(s):  
G.V. Sharukho ◽  
K.G. Oleynik ◽  
Yu.I. Raspopova ◽  
M.Yu. Zolotareva
Keyword(s):  
Well Being ◽  
Hydrological Conditions

The experience in ensuring a stable sanitary and epidemiological situationon the territory of 10 municipalities of Tyumen regionunder the aggravation of hydrological conditions in 2016 is provided. The importance of interdepartmental cooperation in ensuring sanitary and epidemiological well-being under conditions of flooding-elimination is revealed.

ELECTRICAL RESISTIVITY METHOD APPLIED TO STUDY GROUNDWATER CONTAMINATION AROUND THE ALAGOINHAS CEMETERY, BAHIA, BRAZIL

2016 ◽  
Vol 33 (3) ◽  
Author(s):  
Eduardo M.S. Amarante ◽  
Olivar A.L. de Lima ◽  
Susana S. Cavalcanti
Keyword(s):  
Electrical Resistivity ◽  
Groundwater Contamination ◽  
Electrode Array ◽  
Hydrological Conditions ◽  
Vertical Electrical Soundings ◽  
Resistivity Method ◽  
Electrical Soundings ◽  
Electrical Resistivity Method

ABSTRACT. To investigate the subsurface geological and hydrological conditions around the area of the Alagoinhas county cemetery – Bahia State, Brazil, 38 vertical electrical soundings using Schlumberger electrode array were performed to a maximum AB/2 spacing... RESUMO. Para investigar as condições geológicas e hidrológicas da subsuperfície na área do entorno do Cemitério Municipal de Alagoinhas, Bahia, foram realizadas 38 sondagens elétricas verticais centradas em pontos acessíveis da área. As sondagens foram...

Who's onboard? A predictive analysis of cooperative formation in commercial fisheries

2021 ◽  
Vol 279 ◽  
pp. 111715
Author(s):  
Michael De Alessi ◽  
Michael C. Melnychuk ◽  
Edward Wort ◽  
Ray Hilborn
Keyword(s):  
Predictive Analysis ◽  
Commercial Fisheries
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