Jaime Ricardo Cantera Kintz - Academia.edu (original) (raw)
Papers by Jaime Ricardo Cantera Kintz
Hydrobiologia, Jun 17, 2020
Tropical mangroves are amongst the most productive and dynamic ecosystems on Earth. In order to u... more Tropical mangroves are amongst the most productive and dynamic ecosystems on Earth. In order to understand the trophic dynamics of estuarine mangrove fringes in the Tropical Eastern Pacific, stable isotope data (d 13 C/d 15 N) of primary producers and consumers (macroinvertebrates) were analyzed using Bayesian mixing models (MixSIAR/SIBER). The mangrove food web exhibited four trophic levels, a wide consumer d 13 C range (* 10%), consumer dependence on different carbon sources (mangroves-detritus, microphytobenthos, macroalgae, planktonic sources), and a wide consumer isotopic niche with little overlap. According to MixSiar analyses, microphytobenthos was an important resource for deposit feeders (60%), filter feeders (65%), filter feeder bivalves (76%), and carnivores (49%). This suggests that microphytobentos provide significant support to the mangrove macroinvertebrate community. Additionally, mangrove-derived carbon played a major role in sustaining herbivores (44%), while macroalgae partially sustained omnivores (33%) and carnivores (45%). Finally, planktonic sources were found to partially support omnivores (33%). Our results reinforce the hypothesis that a diversity of trophic pathways support estuarine mangrove communities, albeit with microphytobenthos being the main carbon source. These findings underline the complexity of the trophic dynamics of estuarine mangrove-food webs in one of the most biodiverse areas of the world.
Revista de la Academia Colombiana de ciencias exactas, físicas y naturales, Jul 3, 2016
The degree of internal Bioerosion of five tertiary sedimentary cliffs was examined in three tidal... more The degree of internal Bioerosion of five tertiary sedimentary cliffs was examined in three tidal levels (high, medium and low) located in two bays of the Central region of the Pacific coast of Colombia, Tropical Eastern Pacific. The objective was to estimate bioerosion patterns and understand the principal factors determining spatial and temporal variations. The cliffs are composed by layers of soft sedimentary rocks (limestone) alternated with hard sedimentary rocks (shale, sandstones). Plate tectonics, high seismic risk, and processes occurring in the coastline heavily influence geology and geomorphology of the central region of the Pacific coast of Colombia. The region consists of Quaternary alluvial sediments of Pliocene and tertiary cliffs of sedimentary rocks (sandstones, mudstones and shales) of the Mayorquín and the Naya formations. Due to the high slopes and the high fracturing of the rock, non-biologic erosion is caused primarily by runoff and waves, which produces planar mass movements in different scales. It is also common the occurrence of falling blocks, mainly in the coastal cliffs. Main borers of soft rocks were bivalves of the family Pholadidae: Cyrtopleura crucigera, Pholadidea spp. and the crustacean Upogebia spp. Hard rocks were bored by mytilids species: Lithophaga aristata, L. plumula, and by the sipunculid Phascolosoma sp. Major factors controlling bioerosion are in order of importance: hardness and nature of rocks, tidal level, abundance and distribution patterns (zonation) of benthic organisms associated to cliff fauna, and wave action. Total internal bioerosion displayed high values in low tidal levels and soft rocks of cliffs with moderate wave action. Bioerosion declines in externally located hard rocks of the two studied bays despite their exposure to higher hydrodynamics. Higher population densities of borer species were recorded in cliffs located in the internal parts of the bays and in the lower tidal levels. Bored volume was significantly different among tidal levels but not among stations. This was positively correlated with number of species and individuals. Measurements of rocky material loss during the 12-month study period showed that cliff retreat varied between 4.2 cm y-1, in a hard-rock cliff located on an island in the outer region of the Malaga Bay to 13.2 cm y-1 in a mixedrock cliff of the outer region of the same bay. These rates are high compared to other estimates based on erosion by organisms but are far lower than rates obtained in broad scale studies. Temporal variations would be attributed to local oceanographic conditions, particularly extreme tidal range, strong sea currents and intensity of wave action. © Acad. Colomb. Cienc. Ex. Fis. Nat. 2016.
Revista De Biologia Tropical, Apr 18, 2016
El presente trabajo sobre los arrecifes coralinos de la isla de Gorgona (Colombia, Océano Pacífic... more El presente trabajo sobre los arrecifes coralinos de la isla de Gorgona (Colombia, Océano Pacífico), presenta información sistemática, morfológica, ecológica y zoogeográfica de tres especies de la familia Mytilidae, Lithophaga (Myoforceps) aristata, (L. Diberus) plumula, L. (Leisolenus) hancocki y de una especie de la familia Gastrochaenidae, Gastrochaena ovata. Estas se encontraron como endosimbiontes que perforan los corales en esta localidad.This paper presents systematic and ecological remarks about three species of Mytilidae (Lithophaga aristata, L. plumula, and L. hancocki) and one of Gastrochaenidae (Gastrochaena ovata) found boring scleractinian corals of Gorgona lsland; Colombian Pacific coast. It includes a description of diagnostic characteristics of the shells, notes about habitat, bathymetríc range, sizes and geographical distribution. The dead bases of branched corals, and live parts of massive species, present more taxa and numbers of borers
El presente conjunto de datos corresponde a la observaciones de moluscos de la Universidad del Va... more El presente conjunto de datos corresponde a la observaciones de moluscos de la Universidad del Valle. Contiene 1357 registros correspondientes a 49 especies de moluscos marinos y estuarinos. En esta publicación se incluyen las observaciones (sin espécimen preservado) que estaban incluidas dentro de la publicación de la colección biológica. Por lo tanto los registros aquí mostrados representan un 29.89% de observaciones y fotografías, mientras que el 73.11% son especímenes preservados que se encuentran publicados en la Colección de Referencia de Biología Marina de la Universidad del Valle. Estos registros pertenecen a la región del Pacífico colombiano.
![Research paper thumbnail of Conectividad genética de poblaciones naturales de la piangua (Anadara tuberculosa y Anadara similis) en la costa Pacífica colombiana estimada a partir de marcadores moleculares microsatélites [recurso electrónico]](https://attachments.academia-assets.com/120362817/thumbnails/1.jpg)
](Anadara tuberculosa y Anadara similis, especies conocidas bajo el nombre común "piangua", son biv... more Anadara tuberculosa y Anadara similis, especies conocidas bajo el nombre común "piangua", son bivalvos marinos que habitan las áreas de manglar, generalmente cerca de las raíces del mangle rojo. Presentan un ciclo de vida dual, con una etapa adulta bentónica y una etapa larval pelágica. Estos bivalvos soportan la principal pesquería artesanal de moluscos en la costa Pacífica Americana desde Baja California hasta Perú. En Colombia la extracción de A. tuberculosa se ha incrementado en los últimos años debido a la alta demanda por parte de Ecuador. Esto ha ocasionado una explotación descontrolada del recurso y una disminución de las poblaciones naturales, lo que ha llevado a que estas especies sean catalogadas en amenaza. Para avanzar en el desarrollo de estrategias de uso sostenible de la piangua es importante estimar el grado de conectividad existente entre poblaciones, de manera que se puedan dirigir los esfuerzos de conservación. Una de las estrategias más utilizadas para estimar dicha conectividad es estudiar la genética de poblaciones de estos organismos usando marcadores moleculares. En esta investigación se analizaron 152 individuos de A. tuberculosa provenientes de 9 localidades distribuidas a lo largo de la costa Pacífica colombiana con base en la variación alélica de 8 loci microsatélites, los cuales fueron identificados y caracterizados por primera vez para la especie en este estudio. Todos los loci son polimórficos, con un número de alelos (Na) entre 10 (AT07) y 62 (AT01). El número efectivo de alelos fue de 3,4 (AT07) a 29,87 (AT01). La heterocigosidad media observada (HO) fue de 0,289 (AT05) a 0,742 (AT14), mientras que la heterocigosidad media esperada (HE) fue de 0,589 (AT13) a 0,97 (AT01). La mayoría de los loci analizados mostraron desviaciones significativas del equilibrio de Hardy-Weinberg (5/8) lo cual puede ser producto de la presencia de alelos nulos. Sin embargo, se ajustan significativamente al modelo de máxima varianza (frecuencia alélica igual al inverso del número de alelos por marcador). Todos los estimadores de diferenciación genética global calculados, incluyendo los corregidos para alelos nulos con el método ENA, mostraron valores similares cercanos o iguales a cero indicando ausencia de estructura genética poblacional (FST= 0.0012, G´ST= 0.0068, Djost= 0, FST (con ENA)= -0,001051, y FST (No ENA)= -0,003052). Lo mismo se obtuvo en los estimadores de diferenciación genética por parejas de poblaciones. El análisis jerárquico de estructura poblacional AMOVA tampoco indico estructura significativa para el FST (0,002; P=0,071). El programa STRUCTURE indicó que el número más probable de poblaciones en las muestras analizadas es K=1. Estos resultados indican que las
Environmental Science and Pollution Research, 2021
Mangroves are important ecosystems of tropical and subtropical shorelines. Anthropogenic activity... more Mangroves are important ecosystems of tropical and subtropical shorelines. Anthropogenic activity decreases their habitat quality, affecting structural and functional trophic features. We hypothesized that higher levels of anthropogenic intervention generate diversity loss and modify the trophic structure of tropical mangrove fish communities. We compared the taxonomic and isotopic (δ13C/δ15N) composition, abundance, trophic position, and isotopic niche of fish communities from three mangrove systems with different anthropogenic intervention levels in the Colombian Pacific. Non-parametric statistical tests and a Bayesian approach were used to analyze data. A total of 1254 specimens belonging to 23 families, 25 genera, and 30 species were identified, presenting higher abundance (821) in moderate anthropogenic intervention level mangrove (Moderate-AIL), with high dominance of one species (Lile stolifera). The low anthropogenic intervention level mangrove (Low-AIL) was the second in abundance (291) but exhibited a greater number of species (23), while the high anthropogenic intervention level mangrove (High-AIL) presented the least abundance (142) and species number (17). The isotopic composition reveals that Moderate and High-AIL mangroves presented enriched 13C and 15 N compared to Low-AIL (~ 2 to 4 ‰). Mean trophic position (TP) of communities was slightly higher in the more intervened systems (~ 1 to 2 orders of magnitude), as well as in specific species (Centropomus spp.). Isotopic niche width (TA and SEAc) was greater in High-AIL (41.1 and 9.2), more than doubled compared to Moderate-AIL (33.0 and 4.1). In High-AIL isotopic niche width increased, indicating lesser availability of prey and basal resources. The results obtained in this study support the proposed hypothesis and, suggest that anthropogenic intervention modifies diversity and food webs dynamics, affecting the transfer of matter and energy from macrotidal tropical mangroves to coastal ecosystems. However, it is recommended to be careful concluding differences based exclusively on the anthropogenic intervention level, since it is widely documented that mangrove settings also influence the analyzed trophic parameters.
Estuaries and Coasts, 2017
Biodiversity International Journal, 2018
First observation of a cirrated octopus of the genus Cirrothauma in the southern Caribbean of Col... more First observation of a cirrated octopus of the genus Cirrothauma in the southern Caribbean of Colombia (9°12'25,732"N; 76°49'55,091"W). A specimen of this cirrated octopus was observed by a Remote Operated Vehicle (ROV) during an exploratory drilling survey for hydrocarbons at 1,798.28 meters (m) depth. This is the second observation of the genus registered for the Great Caribbean, being the first an observation made in the Cayman Rise in 2016.
Journal of Molluscan Studies, 1983
... N . depress a Benson , 186 7 N . gagate s Lamarck , 182 2 N . glabrata Sow., 184 9 N . guerin... more ... N . depress a Benson , 186 7 N . gagate s Lamarck , 182 2 N . glabrata Sow., 184 9 N . guerin i (Recluz , 1841 ) N . kuramoensis Yoloy e & Adegoke , 197 7 N . natalensis Reeve , 1885 , N . reclivata (Say , 1822 ) N . tahitiensis Lesson , 183 0 N . violace a (Gm., 1790 ) N . virgine ...
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2016
The degree of internal Bioerosion of five tertiary sedimentary cliffs was examined in three tidal... more The degree of internal Bioerosion of five tertiary sedimentary cliffs was examined in three tidal levels (high, medium and low) located in two bays of the Central region of the Pacific coast of Colombia, Tropical Eastern Pacific. The objective was to estimate bioerosion patterns and understand the principal factors determining spatial and temporal variations. The cliffs are composed by layers of soft sedimentary rocks (limestone) alternated with hard sedimentary rocks (shale, sandstones). Plate tectonics, high seismic risk, and processes occurring in the coastline heavily influence geology and geomorphology of the central region of the Pacific coast of Colombia. The region consists of Quaternary alluvial sediments of Pliocene and tertiary cliffs of sedimentary rocks (sandstones, mudstones and shales) of the Mayorquín and the Naya formations. Due to the high slopes and the high fracturing of the rock, non-biologic erosion is caused primarily by runoff and waves, which produces planar mass movements in different scales. It is also common the occurrence of falling blocks, mainly in the coastal cliffs. Main borers of soft rocks were bivalves of the family Pholadidae: Cyrtopleura crucigera, Pholadidea spp. and the crustacean Upogebia spp. Hard rocks were bored by mytilids species: Lithophaga aristata, L. plumula, and by the sipunculid Phascolosoma sp. Major factors controlling bioerosion are in order of importance: hardness and nature of rocks, tidal level, abundance and distribution patterns (zonation) of benthic organisms associated to cliff fauna, and wave action. Total internal bioerosion displayed high values in low tidal levels and soft rocks of cliffs with moderate wave action. Bioerosion declines in externally located hard rocks of the two studied bays despite their exposure to higher hydrodynamics. Higher population densities of borer species were recorded in cliffs located in the internal parts of the bays and in the lower tidal levels. Bored volume was significantly different among tidal levels but not among stations. This was positively correlated with number of species and individuals. Measurements of rocky material loss during the 12-month study period showed that cliff retreat varied between 4.2 cm y-1, in a hard-rock cliff located on an island in the outer region of the Malaga Bay to 13.2 cm y-1 in a mixedrock cliff of the outer region of the same bay. These rates are high compared to other estimates based on erosion by organisms but are far lower than rates obtained in broad scale studies. Temporal variations would be attributed to local oceanographic conditions, particularly extreme tidal range, strong sea currents and intensity of wave action. © Acad. Colomb. Cienc. Ex. Fis. Nat. 2016.
Journal of Marine Biology, 2011
The composition and distribution of the main associations of submerged macrobenthos ofBahía Málag... more The composition and distribution of the main associations of submerged macrobenthos ofBahía Málaga(Colombian pacific coast), were studied in relation to the distribution of hard and soft substrates and some abiotic factors. Eight localities were sampled during six months: three in the external border of the estuary and five in the inner part. In total, 728 organisms were registered, belonging to 207 species, 132 genera, 86 families, and 14 orders of six invertebrate groups (Porifera, Cnidaria, Polychaeta, Mollusca, Crustacea, and Echinodermata). The submerged bottoms presented soft and hard substrates, with rocks and thick sand in five sites, soft bottoms with fine sand in one, and soft bottoms with slime and clay in two. The temperature and salinity values were higher in the external localities, while dissolved oxygen and pH were higher in the internal localities. The localities with hard substrates presented the highest richness of species while the soft substrates, were character...
Bulletin of marine science, 2024
Estuarine Coastal and Shelf Science, Nov 1, 2018
Environmental conservation, management, and policy rely on accurate scientific information and in... more Environmental conservation, management, and policy rely on accurate scientific information and interpretation. Dramatic numbers related to the decline of a natural resource often get the attention of the media, and even the scientific community, and propagate through to wider society. Such headline-generating reporting of dramatic environmental loss scenarios can confuse and may result in poor decision making related to the application of funding priorities and policies driven by concerned scientists, environmental groups, and the public. Here we analyze the historical and current estimations of mangrove cover of a relatively pristine mangrove area of the Neotropics along the Colombian Pacific coast. Our comparison reveals highly differing estimates of mangrove coverage based on the methods used since the 1960's. As opposed to what is commonly claimed by some studies, and the media, mangrove cover in this region has likely remained relatively stable, at least over the last 15-years. Estimates constructed between 1966 and 1992 likely overestimate mangrove area due to the lack of high-resolution delineation methods, such as satellite imagery, and a lack of robust defined methodologies. Mangroves along the Pacific coast of Colombia, despite localized losses, likely remain one of the most well preserved tidal forests of the Neotropics. Future analyses of mangrove in this region need to treat with caution earlier estimates of mangrove cover that are likely overestimates based on dated technologies and undefined methodologies.
IP 1106-09-328-97PONENCIA(S) EN CONGRESO: Modelo conceptual de la estructura trofica de lascomuni... more IP 1106-09-328-97PONENCIA(S) EN CONGRESO: Modelo conceptual de la estructura trofica de lascomunidades asociadas a los;manglares de la desembocadura del rio Dagua (bahia de Buenaventura) / Jaime R. Cantera K ... [et al.]. -- En:;Conservando los oceanos hacemos realidad el sueño de las futurasgeneraciones / Seminario Nacional de Politica;Ciencias y Tecnologias del Mar (11 : 1998 oct. 26-30 : Santafede Bogotá).-- Santafe de Bogotá : CCO, 1998.;[s.l.] : ACCB, 1999. -- p. -- Variaciones espacio-temporales dela biomasay de la productividad primaria;fitoplanctonica en el estuario del rio Dagua (bahia de Buenaventura). -- En: Un nuevo punto de partida /;Seminario Nacional de Limnologia (4 : 2000 : nov. 11-13 :Santafe de Bogotá). -- Santafe de Bogotá :;Pontificia Universidad Javeriana, 2000. -- p. -- Transferenciade energiay circulacion de materia en la;en el estuario del rio Dagua, departamento del Valle del Cauca/G.L. Vasquez ... [et al]. -- En: Programas y;resumenes / Congreso Nacional de Ciencias Biologicas (34 :1999oct. 27-30: Santiago de Cali, Colombia). --;'-- p. -- Herbivoria foliar en bosques perturbados de manglar (desembocadura del rio Dagua, bahia de;Buenaventura) / Isabel C. Romero y Jaime R. Cantera K. --Conservando losoceanos hacemos realidad el sueño de;las futuras generaciones / Seminario Nacional de PoliticaCiencias y Tecnologias del Mar (11 : 1998 oct. 26-30;: Santafe de Bogotá). -- Santafe de Bogotá : CCO, 1998. --p.--Caracterizacion de la ictiofauna predominante;cuenca baja y desembocadura del rio Dagua. -- En: Hacia unmanejo integraldel agua siglo XXI, como criterio;para el ordenamiento de cuencas hidrograficas / Jornada Tecnicaen Recursos Hidrobiologicos Continentales y;Marinos (3 : 2000 nov. 30-dic. 1 : Buga). -- Cali : CVC, 2000.-'- p. -- Nutrients dynamic and trophic ecology;in the Dagua river estuary, colombian Pacific coast / by EnriquePeña andJaime Cantera. -- En: Special;Seminar Thursday (2001 Mar. 1). -- [s.l. : s.n.], 2001. --p.--ARTICULO(S) EN REVISTA: Variability of;macrobenthic assemblages under abnormal climatic conditions inasmall scale tropical estuary / Carlos H.;Lucero R., Jaime R. Cantera K., Isabel C. Romero. -- En: Estuarine, coastal and shelf science. -- Vol. 68;(2006); p. 17-26. -- ISSN 02727714 -- Consumo de hojas porherbivoros en manglares del estuario del rio Dagua,;costa Pacifica colombiana / Isabel C. Romero, Jaime R. CanteraK. y Enrique J. Peña S. -- En: Revista de;biologia tropical. -- Vol. 54, no. 4 (Dec. 2006); p. 1205-1214.-- ISSN 0034-7744
Hydrobiologia, Jun 17, 2020
Tropical mangroves are amongst the most productive and dynamic ecosystems on Earth. In order to u... more Tropical mangroves are amongst the most productive and dynamic ecosystems on Earth. In order to understand the trophic dynamics of estuarine mangrove fringes in the Tropical Eastern Pacific, stable isotope data (d 13 C/d 15 N) of primary producers and consumers (macroinvertebrates) were analyzed using Bayesian mixing models (MixSIAR/SIBER). The mangrove food web exhibited four trophic levels, a wide consumer d 13 C range (* 10%), consumer dependence on different carbon sources (mangroves-detritus, microphytobenthos, macroalgae, planktonic sources), and a wide consumer isotopic niche with little overlap. According to MixSiar analyses, microphytobenthos was an important resource for deposit feeders (60%), filter feeders (65%), filter feeder bivalves (76%), and carnivores (49%). This suggests that microphytobentos provide significant support to the mangrove macroinvertebrate community. Additionally, mangrove-derived carbon played a major role in sustaining herbivores (44%), while macroalgae partially sustained omnivores (33%) and carnivores (45%). Finally, planktonic sources were found to partially support omnivores (33%). Our results reinforce the hypothesis that a diversity of trophic pathways support estuarine mangrove communities, albeit with microphytobenthos being the main carbon source. These findings underline the complexity of the trophic dynamics of estuarine mangrove-food webs in one of the most biodiverse areas of the world.
Revista de la Academia Colombiana de ciencias exactas, físicas y naturales, Jul 3, 2016
The degree of internal Bioerosion of five tertiary sedimentary cliffs was examined in three tidal... more The degree of internal Bioerosion of five tertiary sedimentary cliffs was examined in three tidal levels (high, medium and low) located in two bays of the Central region of the Pacific coast of Colombia, Tropical Eastern Pacific. The objective was to estimate bioerosion patterns and understand the principal factors determining spatial and temporal variations. The cliffs are composed by layers of soft sedimentary rocks (limestone) alternated with hard sedimentary rocks (shale, sandstones). Plate tectonics, high seismic risk, and processes occurring in the coastline heavily influence geology and geomorphology of the central region of the Pacific coast of Colombia. The region consists of Quaternary alluvial sediments of Pliocene and tertiary cliffs of sedimentary rocks (sandstones, mudstones and shales) of the Mayorquín and the Naya formations. Due to the high slopes and the high fracturing of the rock, non-biologic erosion is caused primarily by runoff and waves, which produces planar mass movements in different scales. It is also common the occurrence of falling blocks, mainly in the coastal cliffs. Main borers of soft rocks were bivalves of the family Pholadidae: Cyrtopleura crucigera, Pholadidea spp. and the crustacean Upogebia spp. Hard rocks were bored by mytilids species: Lithophaga aristata, L. plumula, and by the sipunculid Phascolosoma sp. Major factors controlling bioerosion are in order of importance: hardness and nature of rocks, tidal level, abundance and distribution patterns (zonation) of benthic organisms associated to cliff fauna, and wave action. Total internal bioerosion displayed high values in low tidal levels and soft rocks of cliffs with moderate wave action. Bioerosion declines in externally located hard rocks of the two studied bays despite their exposure to higher hydrodynamics. Higher population densities of borer species were recorded in cliffs located in the internal parts of the bays and in the lower tidal levels. Bored volume was significantly different among tidal levels but not among stations. This was positively correlated with number of species and individuals. Measurements of rocky material loss during the 12-month study period showed that cliff retreat varied between 4.2 cm y-1, in a hard-rock cliff located on an island in the outer region of the Malaga Bay to 13.2 cm y-1 in a mixedrock cliff of the outer region of the same bay. These rates are high compared to other estimates based on erosion by organisms but are far lower than rates obtained in broad scale studies. Temporal variations would be attributed to local oceanographic conditions, particularly extreme tidal range, strong sea currents and intensity of wave action. © Acad. Colomb. Cienc. Ex. Fis. Nat. 2016.
Revista De Biologia Tropical, Apr 18, 2016
El presente trabajo sobre los arrecifes coralinos de la isla de Gorgona (Colombia, Océano Pacífic... more El presente trabajo sobre los arrecifes coralinos de la isla de Gorgona (Colombia, Océano Pacífico), presenta información sistemática, morfológica, ecológica y zoogeográfica de tres especies de la familia Mytilidae, Lithophaga (Myoforceps) aristata, (L. Diberus) plumula, L. (Leisolenus) hancocki y de una especie de la familia Gastrochaenidae, Gastrochaena ovata. Estas se encontraron como endosimbiontes que perforan los corales en esta localidad.This paper presents systematic and ecological remarks about three species of Mytilidae (Lithophaga aristata, L. plumula, and L. hancocki) and one of Gastrochaenidae (Gastrochaena ovata) found boring scleractinian corals of Gorgona lsland; Colombian Pacific coast. It includes a description of diagnostic characteristics of the shells, notes about habitat, bathymetríc range, sizes and geographical distribution. The dead bases of branched corals, and live parts of massive species, present more taxa and numbers of borers
El presente conjunto de datos corresponde a la observaciones de moluscos de la Universidad del Va... more El presente conjunto de datos corresponde a la observaciones de moluscos de la Universidad del Valle. Contiene 1357 registros correspondientes a 49 especies de moluscos marinos y estuarinos. En esta publicación se incluyen las observaciones (sin espécimen preservado) que estaban incluidas dentro de la publicación de la colección biológica. Por lo tanto los registros aquí mostrados representan un 29.89% de observaciones y fotografías, mientras que el 73.11% son especímenes preservados que se encuentran publicados en la Colección de Referencia de Biología Marina de la Universidad del Valle. Estos registros pertenecen a la región del Pacífico colombiano.
Anadara tuberculosa y Anadara similis, especies conocidas bajo el nombre común "piangua", son biv... more Anadara tuberculosa y Anadara similis, especies conocidas bajo el nombre común "piangua", son bivalvos marinos que habitan las áreas de manglar, generalmente cerca de las raíces del mangle rojo. Presentan un ciclo de vida dual, con una etapa adulta bentónica y una etapa larval pelágica. Estos bivalvos soportan la principal pesquería artesanal de moluscos en la costa Pacífica Americana desde Baja California hasta Perú. En Colombia la extracción de A. tuberculosa se ha incrementado en los últimos años debido a la alta demanda por parte de Ecuador. Esto ha ocasionado una explotación descontrolada del recurso y una disminución de las poblaciones naturales, lo que ha llevado a que estas especies sean catalogadas en amenaza. Para avanzar en el desarrollo de estrategias de uso sostenible de la piangua es importante estimar el grado de conectividad existente entre poblaciones, de manera que se puedan dirigir los esfuerzos de conservación. Una de las estrategias más utilizadas para estimar dicha conectividad es estudiar la genética de poblaciones de estos organismos usando marcadores moleculares. En esta investigación se analizaron 152 individuos de A. tuberculosa provenientes de 9 localidades distribuidas a lo largo de la costa Pacífica colombiana con base en la variación alélica de 8 loci microsatélites, los cuales fueron identificados y caracterizados por primera vez para la especie en este estudio. Todos los loci son polimórficos, con un número de alelos (Na) entre 10 (AT07) y 62 (AT01). El número efectivo de alelos fue de 3,4 (AT07) a 29,87 (AT01). La heterocigosidad media observada (HO) fue de 0,289 (AT05) a 0,742 (AT14), mientras que la heterocigosidad media esperada (HE) fue de 0,589 (AT13) a 0,97 (AT01). La mayoría de los loci analizados mostraron desviaciones significativas del equilibrio de Hardy-Weinberg (5/8) lo cual puede ser producto de la presencia de alelos nulos. Sin embargo, se ajustan significativamente al modelo de máxima varianza (frecuencia alélica igual al inverso del número de alelos por marcador). Todos los estimadores de diferenciación genética global calculados, incluyendo los corregidos para alelos nulos con el método ENA, mostraron valores similares cercanos o iguales a cero indicando ausencia de estructura genética poblacional (FST= 0.0012, G´ST= 0.0068, Djost= 0, FST (con ENA)= -0,001051, y FST (No ENA)= -0,003052). Lo mismo se obtuvo en los estimadores de diferenciación genética por parejas de poblaciones. El análisis jerárquico de estructura poblacional AMOVA tampoco indico estructura significativa para el FST (0,002; P=0,071). El programa STRUCTURE indicó que el número más probable de poblaciones en las muestras analizadas es K=1. Estos resultados indican que las
Environmental Science and Pollution Research, 2021
Mangroves are important ecosystems of tropical and subtropical shorelines. Anthropogenic activity... more Mangroves are important ecosystems of tropical and subtropical shorelines. Anthropogenic activity decreases their habitat quality, affecting structural and functional trophic features. We hypothesized that higher levels of anthropogenic intervention generate diversity loss and modify the trophic structure of tropical mangrove fish communities. We compared the taxonomic and isotopic (δ13C/δ15N) composition, abundance, trophic position, and isotopic niche of fish communities from three mangrove systems with different anthropogenic intervention levels in the Colombian Pacific. Non-parametric statistical tests and a Bayesian approach were used to analyze data. A total of 1254 specimens belonging to 23 families, 25 genera, and 30 species were identified, presenting higher abundance (821) in moderate anthropogenic intervention level mangrove (Moderate-AIL), with high dominance of one species (Lile stolifera). The low anthropogenic intervention level mangrove (Low-AIL) was the second in abundance (291) but exhibited a greater number of species (23), while the high anthropogenic intervention level mangrove (High-AIL) presented the least abundance (142) and species number (17). The isotopic composition reveals that Moderate and High-AIL mangroves presented enriched 13C and 15 N compared to Low-AIL (~ 2 to 4 ‰). Mean trophic position (TP) of communities was slightly higher in the more intervened systems (~ 1 to 2 orders of magnitude), as well as in specific species (Centropomus spp.). Isotopic niche width (TA and SEAc) was greater in High-AIL (41.1 and 9.2), more than doubled compared to Moderate-AIL (33.0 and 4.1). In High-AIL isotopic niche width increased, indicating lesser availability of prey and basal resources. The results obtained in this study support the proposed hypothesis and, suggest that anthropogenic intervention modifies diversity and food webs dynamics, affecting the transfer of matter and energy from macrotidal tropical mangroves to coastal ecosystems. However, it is recommended to be careful concluding differences based exclusively on the anthropogenic intervention level, since it is widely documented that mangrove settings also influence the analyzed trophic parameters.
Estuaries and Coasts, 2017
Biodiversity International Journal, 2018
First observation of a cirrated octopus of the genus Cirrothauma in the southern Caribbean of Col... more First observation of a cirrated octopus of the genus Cirrothauma in the southern Caribbean of Colombia (9°12'25,732"N; 76°49'55,091"W). A specimen of this cirrated octopus was observed by a Remote Operated Vehicle (ROV) during an exploratory drilling survey for hydrocarbons at 1,798.28 meters (m) depth. This is the second observation of the genus registered for the Great Caribbean, being the first an observation made in the Cayman Rise in 2016.
Journal of Molluscan Studies, 1983
... N . depress a Benson , 186 7 N . gagate s Lamarck , 182 2 N . glabrata Sow., 184 9 N . guerin... more ... N . depress a Benson , 186 7 N . gagate s Lamarck , 182 2 N . glabrata Sow., 184 9 N . guerin i (Recluz , 1841 ) N . kuramoensis Yoloy e & Adegoke , 197 7 N . natalensis Reeve , 1885 , N . reclivata (Say , 1822 ) N . tahitiensis Lesson , 183 0 N . violace a (Gm., 1790 ) N . virgine ...
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2016
The degree of internal Bioerosion of five tertiary sedimentary cliffs was examined in three tidal... more The degree of internal Bioerosion of five tertiary sedimentary cliffs was examined in three tidal levels (high, medium and low) located in two bays of the Central region of the Pacific coast of Colombia, Tropical Eastern Pacific. The objective was to estimate bioerosion patterns and understand the principal factors determining spatial and temporal variations. The cliffs are composed by layers of soft sedimentary rocks (limestone) alternated with hard sedimentary rocks (shale, sandstones). Plate tectonics, high seismic risk, and processes occurring in the coastline heavily influence geology and geomorphology of the central region of the Pacific coast of Colombia. The region consists of Quaternary alluvial sediments of Pliocene and tertiary cliffs of sedimentary rocks (sandstones, mudstones and shales) of the Mayorquín and the Naya formations. Due to the high slopes and the high fracturing of the rock, non-biologic erosion is caused primarily by runoff and waves, which produces planar mass movements in different scales. It is also common the occurrence of falling blocks, mainly in the coastal cliffs. Main borers of soft rocks were bivalves of the family Pholadidae: Cyrtopleura crucigera, Pholadidea spp. and the crustacean Upogebia spp. Hard rocks were bored by mytilids species: Lithophaga aristata, L. plumula, and by the sipunculid Phascolosoma sp. Major factors controlling bioerosion are in order of importance: hardness and nature of rocks, tidal level, abundance and distribution patterns (zonation) of benthic organisms associated to cliff fauna, and wave action. Total internal bioerosion displayed high values in low tidal levels and soft rocks of cliffs with moderate wave action. Bioerosion declines in externally located hard rocks of the two studied bays despite their exposure to higher hydrodynamics. Higher population densities of borer species were recorded in cliffs located in the internal parts of the bays and in the lower tidal levels. Bored volume was significantly different among tidal levels but not among stations. This was positively correlated with number of species and individuals. Measurements of rocky material loss during the 12-month study period showed that cliff retreat varied between 4.2 cm y-1, in a hard-rock cliff located on an island in the outer region of the Malaga Bay to 13.2 cm y-1 in a mixedrock cliff of the outer region of the same bay. These rates are high compared to other estimates based on erosion by organisms but are far lower than rates obtained in broad scale studies. Temporal variations would be attributed to local oceanographic conditions, particularly extreme tidal range, strong sea currents and intensity of wave action. © Acad. Colomb. Cienc. Ex. Fis. Nat. 2016.
Journal of Marine Biology, 2011
The composition and distribution of the main associations of submerged macrobenthos ofBahía Málag... more The composition and distribution of the main associations of submerged macrobenthos ofBahía Málaga(Colombian pacific coast), were studied in relation to the distribution of hard and soft substrates and some abiotic factors. Eight localities were sampled during six months: three in the external border of the estuary and five in the inner part. In total, 728 organisms were registered, belonging to 207 species, 132 genera, 86 families, and 14 orders of six invertebrate groups (Porifera, Cnidaria, Polychaeta, Mollusca, Crustacea, and Echinodermata). The submerged bottoms presented soft and hard substrates, with rocks and thick sand in five sites, soft bottoms with fine sand in one, and soft bottoms with slime and clay in two. The temperature and salinity values were higher in the external localities, while dissolved oxygen and pH were higher in the internal localities. The localities with hard substrates presented the highest richness of species while the soft substrates, were character...
Bulletin of marine science, 2024
Estuarine Coastal and Shelf Science, Nov 1, 2018
Environmental conservation, management, and policy rely on accurate scientific information and in... more Environmental conservation, management, and policy rely on accurate scientific information and interpretation. Dramatic numbers related to the decline of a natural resource often get the attention of the media, and even the scientific community, and propagate through to wider society. Such headline-generating reporting of dramatic environmental loss scenarios can confuse and may result in poor decision making related to the application of funding priorities and policies driven by concerned scientists, environmental groups, and the public. Here we analyze the historical and current estimations of mangrove cover of a relatively pristine mangrove area of the Neotropics along the Colombian Pacific coast. Our comparison reveals highly differing estimates of mangrove coverage based on the methods used since the 1960's. As opposed to what is commonly claimed by some studies, and the media, mangrove cover in this region has likely remained relatively stable, at least over the last 15-years. Estimates constructed between 1966 and 1992 likely overestimate mangrove area due to the lack of high-resolution delineation methods, such as satellite imagery, and a lack of robust defined methodologies. Mangroves along the Pacific coast of Colombia, despite localized losses, likely remain one of the most well preserved tidal forests of the Neotropics. Future analyses of mangrove in this region need to treat with caution earlier estimates of mangrove cover that are likely overestimates based on dated technologies and undefined methodologies.
IP 1106-09-328-97PONENCIA(S) EN CONGRESO: Modelo conceptual de la estructura trofica de lascomuni... more IP 1106-09-328-97PONENCIA(S) EN CONGRESO: Modelo conceptual de la estructura trofica de lascomunidades asociadas a los;manglares de la desembocadura del rio Dagua (bahia de Buenaventura) / Jaime R. Cantera K ... [et al.]. -- En:;Conservando los oceanos hacemos realidad el sueño de las futurasgeneraciones / Seminario Nacional de Politica;Ciencias y Tecnologias del Mar (11 : 1998 oct. 26-30 : Santafede Bogotá).-- Santafe de Bogotá : CCO, 1998.;[s.l.] : ACCB, 1999. -- p. -- Variaciones espacio-temporales dela biomasay de la productividad primaria;fitoplanctonica en el estuario del rio Dagua (bahia de Buenaventura). -- En: Un nuevo punto de partida /;Seminario Nacional de Limnologia (4 : 2000 : nov. 11-13 :Santafe de Bogotá). -- Santafe de Bogotá :;Pontificia Universidad Javeriana, 2000. -- p. -- Transferenciade energiay circulacion de materia en la;en el estuario del rio Dagua, departamento del Valle del Cauca/G.L. Vasquez ... [et al]. -- En: Programas y;resumenes / Congreso Nacional de Ciencias Biologicas (34 :1999oct. 27-30: Santiago de Cali, Colombia). --;'-- p. -- Herbivoria foliar en bosques perturbados de manglar (desembocadura del rio Dagua, bahia de;Buenaventura) / Isabel C. Romero y Jaime R. Cantera K. --Conservando losoceanos hacemos realidad el sueño de;las futuras generaciones / Seminario Nacional de PoliticaCiencias y Tecnologias del Mar (11 : 1998 oct. 26-30;: Santafe de Bogotá). -- Santafe de Bogotá : CCO, 1998. --p.--Caracterizacion de la ictiofauna predominante;cuenca baja y desembocadura del rio Dagua. -- En: Hacia unmanejo integraldel agua siglo XXI, como criterio;para el ordenamiento de cuencas hidrograficas / Jornada Tecnicaen Recursos Hidrobiologicos Continentales y;Marinos (3 : 2000 nov. 30-dic. 1 : Buga). -- Cali : CVC, 2000.-'- p. -- Nutrients dynamic and trophic ecology;in the Dagua river estuary, colombian Pacific coast / by EnriquePeña andJaime Cantera. -- En: Special;Seminar Thursday (2001 Mar. 1). -- [s.l. : s.n.], 2001. --p.--ARTICULO(S) EN REVISTA: Variability of;macrobenthic assemblages under abnormal climatic conditions inasmall scale tropical estuary / Carlos H.;Lucero R., Jaime R. Cantera K., Isabel C. Romero. -- En: Estuarine, coastal and shelf science. -- Vol. 68;(2006); p. 17-26. -- ISSN 02727714 -- Consumo de hojas porherbivoros en manglares del estuario del rio Dagua,;costa Pacifica colombiana / Isabel C. Romero, Jaime R. CanteraK. y Enrique J. Peña S. -- En: Revista de;biologia tropical. -- Vol. 54, no. 4 (Dec. 2006); p. 1205-1214.-- ISSN 0034-7744