Mangrove carbon sustains artisanal fish and other estuarine consumers in a major mangrove area of the southern Caribbean Sea

2021 ◽  
Author(s):  
LA Sandoval Londoño ◽  
JE Mancera-Pineda ◽  
J Leal-Flórez ◽  
JF Blanco-Libreros ◽  
A Delgado-Huertas
Keyword(s):  
Caribbean Sea ◽  
Mangrove Area ◽  
Southern Caribbean

scholarly journals Linking mangroves and fish catch: a correlational study in the southern Caribbean Sea (Colombia)

2020 ◽  
Vol 96 (3) ◽  
pp. 415-430
Author(s):  
Luis Alejandro Sandoval Londoño ◽  
Jenny Leal-Flórez ◽  
Juan F Blanco-Libreros
Keyword(s):  
Fish Species ◽  
Caribbean Sea ◽  
Small Scale ◽  
Fish Production ◽  
Catch Per Unit Effort ◽  
Mangrove Area ◽  
Southern Caribbean ◽  
Fish Catch ◽  
Area And Perimeter ◽  
Associated Species

Mangroves provide habitat to a variety of fish species, potentially enhancing fish production in small-scale fisheries. Fish production ecosystem services have been correlated with mangrove area and perimeter in many tropical locations; however, nothing has been published linking small-scale fish catch and mangrove attributes in the southern Caribbean Sea. We correlated environmental variables with experimentally-derived catch per unit effort (CPUE) and richness of fishes in the Colombian southern Caribbean Sea, an area not directly connected with other productive coastal habitats. Concurrently, we measured mangrove attributes (area, perimeter, above-ground carbon), water quality (salinity, total dissolved solids), and water column productivity parameters (chlorophyll a, seston, zooplankton biovolume). Mangrove area and zooplankton biovolume were the main factors influencing fish species richness. Mangrove area was positively correlated with catches for three of the most common fish species in the local artisanal fishery: Ariopsis canteri Acero P, Betancur-R, and Marceniuk, 2017, Mugil incilis Hancock, 1830, and Sciades proops (Valenciennes, 1840), which represent about 22% of the total regional annual catch. Our results suggest causal links between mangrove habitat and fishery production through a mangrove trophic contribution. Ariopsis canteri appears to be a mangrove-dependent species and M. incilis a mangrove- associated species. These results support managing or preserving mangroves in the most extensive areas in the southern Caribbean to sustain small-scale fishery resources used mainly for community sustenance where alternative resources are limited.

Modelling the transport of sediment discharged by Colombian rivers to the southern Caribbean Sea

2021 ◽  
Author(s):  
Andrea Devis-Morales ◽  
Efraín Rodríguez-Rubio ◽  
Raúl Andrés Montoya-Sánchez
Keyword(s):  
Caribbean Sea ◽  
Southern Caribbean

scholarly journals Controls of Caribbean surface hydrology during the mid- to late Holocene: insights from monthly resolved coral records

2013 ◽  
Vol 9 (2) ◽  
pp. 841-858 ◽  
Author(s):  
C. Giry ◽  
T. Felis ◽  
M. Kölling ◽  
W. Wei ◽  
G. Lohmann ◽  
...  
Keyword(s):  
Late Holocene ◽  
Hydrological Cycle ◽  
Summer Precipitation ◽  
Caribbean Sea ◽  
Sea Surface ◽  
Surface Currents ◽  
Surface Hydrology ◽  
Multidecadal Variability ◽  
Southern Caribbean ◽  
The Caribbean

Abstract. Several proxy-based and modeling studies have investigated long-term changes in Caribbean climate during the Holocene, however, very little is known on its variability on short timescales. Here we reconstruct seasonality and interannual to multidecadal variability of sea surface hydrology of the southern Caribbean Sea by applying paired coral Sr/Ca and δ18O measurements on fossil annually banded Diploria strigosa corals from Bonaire. This allows for better understanding of seasonal to multidecadal variability of the Caribbean hydrological cycle during the mid- to late Holocene. The monthly resolved coral Δδ18O records are used as a proxy for the oxygen isotopic composition of seawater (δ18Osw) of the southern Caribbean Sea. Consistent with modern day conditions, annual δ18Osw cycles reconstructed from three modern corals reveal that freshwater budget at the study site is influenced by both net precipitation and advection of tropical freshwater brought by wind-driven surface currents. In contrast, the annual δ18Osw cycle reconstructed from a mid-Holocene coral indicates a sharp peak towards more negative values in summer, suggesting intense summer precipitation at 6 ka BP (before present). In line with this, our model simulations indicate that increased seasonality of the hydrological cycle at 6 ka BP results from enhanced precipitation in summertime. On interannual to multidecadal timescales, the systematic positive correlation observed between reconstructed sea surface temperature and salinity suggests that freshwater discharged from the Orinoco and Amazon rivers and transported into the Caribbean by wind-driven surface currents is a critical component influencing sea surface hydrology on these timescales.

scholarly journals Predation Tactics of Trumpetfish in Midwater

2008 ◽  
Vol 6 (2) ◽  
pp. 289-292 ◽  
Author(s):  
Peter J. Auster
Keyword(s):  
Caribbean Sea ◽  
Local Conditions ◽  
Habitat Patches ◽  
Netherlands Antilles ◽  
Southern Caribbean ◽  
Hunting Tactics ◽  
Predator Behavior

Predators are known to modify hunting tactics in response to local conditions to exploit prey of different species, densities or position within habitat patches. I describe three unusual prey hunting tactics used by trumpetfish (Aulostomus maculatus) distributed in midwater above reefs off Bonaire, Netherlands Antilles, in the southern Caribbean Sea. Hunting behaviors were focused on dense feeding aggregations of brown chromis (Chromis multilineata) and were categorized as: (1) slow horizontal following, (2) vertical hovering or drift, and (3) diagonal cross encounters where trumpetfish descended diagonally through the water while adjusting trajectory to encounter target prey. Understanding variation in predator behavior and ambit, in this case vertical ambit, adds to our knowledge of how predators adapt to unique local opportunities to exploit prey.

scholarly journals SURVIVAL, INDUCTION AND RESUSCITATION OF Vibrio cholerae FROM THE VIABLE BUT NON-CULTURABLE STATE IN THE SOUTHERN CARIBBEAN SEA

2015 ◽  
Vol 57 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Milagro Fernández-Delgado ◽  
María Alexandra García-Amado ◽  
Monica Contreras ◽  
Renzo Nino Incani ◽  
Humberto Chirinos ◽  
...  
Keyword(s):  
Vibrio Cholerae ◽  
Bacterial Population ◽  
Morphological Changes ◽  
Caribbean Sea ◽  
Vbnc State ◽  
Cholera Vibrio ◽  
Viable Cells ◽  
Southern Caribbean ◽  
Favorable Conditions

The causative agent of cholera, Vibrio cholerae, can enter into a viable but non-culturable (VBNC) state in response to unfavorable conditions. The aim of this study was to evaluate the in situ survival of V. cholerae in an aquatic environment of the Southern Caribbean Sea, and its induction and resuscitation from the VBNC state. V. cholerae non-O1, non-O139 was inoculated into diffusion chambers placed at the Cuare Wildlife Refuge, Venezuela, and monitored for plate, total and viable cells counts. At 119 days of exposure to the environment, the colony count was < 10 CFU/mL and a portion of the bacterial population entered the VBNC state. Additionally, the viability decreased two orders of magnitude and morphological changes occurred from rod to coccoid cells. Among the aquatic environmental variables, the salinity had negative correlation with the colony counts in the dry season. Resuscitation studies showed significant recovery of cell cultivability with spent media addition (p < 0.05). These results suggest that V. cholerae can persist in the VBNC state in this Caribbean environment and revert to a cultivable form under favorable conditions. The VBNC state might represent a critical step in cholera transmission in susceptible areas.

Prevalence and Distribution ofVibriospp. in Wild Aquatic Birds of the Southern Caribbean Sea, Venezuela, 2011–12

2016 ◽  
Vol 52 (3) ◽  
pp. 621-626 ◽  
Author(s):  
Milagro Fernández-Delgado ◽  
Virginia Sanz ◽  
Sandra Giner ◽  
Paula Suárez ◽  
Monica Contreras ◽  
...  
Keyword(s):  
Caribbean Sea ◽  
Aquatic Birds ◽  
Southern Caribbean
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