A 60 year wave hindcast dataset in the southern Caribbean Sea

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.

Download Full-text

Predation Tactics of Trumpetfish in Midwater

Neotropical Ichthyology ◽

10.1590/s1679-62252008000200018 ◽

2008 ◽

Vol 6 (2) ◽

pp. 289-292 ◽

Cited By ~ 2

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.

Download Full-text

Description and Mechanisms of the Mid-Year Upwelling in the Southern Caribbean Sea from Remote Sensing and Local Data

Journal of Marine Science and Engineering ◽

10.3390/jmse6020036 ◽

2018 ◽

Vol 6 (2) ◽

pp. 36 ◽

Cited By ~ 11

Author(s):

Digna Rueda-Roa ◽

Tal Ezer ◽

Frank Muller-Karger

Keyword(s):

Remote Sensing ◽

Caribbean Sea ◽

Local Data ◽

Southern Caribbean

Download Full-text

Seismic Stratigraphy and Sedimentation, Magdalena Fan, Southern Caribbean Sea: ABSTRACT

AAPG Bulletin ◽

10.1306/03b59ebd-16d1-11d7-8645000102c1865d ◽

1982 ◽

Vol 66 ◽

Author(s):

V. Kolla, R. T. Buffler, J. W. Ladd

Keyword(s):

Caribbean Sea ◽

Seismic Stratigraphy ◽

Southern Caribbean

Download Full-text

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

Marine Ecology Progress Series ◽

10.3354/meps13910 ◽

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

Download Full-text

Sediment Bypassing from the New Human-Induced Lobe to the Ancient Lobe of the Turbo Delta (Gulf of Urabá, Southern Caribbean Sea)

Journal of Coastal Research ◽

10.2112/jcoastres-d-17-00221.1 ◽

2019 ◽

Vol 35 (1) ◽

pp. 196

Author(s):

Ana Caicedo ◽

Javier Alcántara-Carrió ◽

Jonny C. Hernández

Keyword(s):

Caribbean Sea ◽

Southern Caribbean

Download Full-text

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

Revista do Instituto de Medicina Tropical de São Paulo ◽

10.1590/s0036-46652015000100003 ◽

2015 ◽

Vol 57 (1) ◽

pp. 21-26 ◽

Cited By ~ 12

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.

Download Full-text