The Influence of Climate Variability on Holoplanktonic Polychaetes Populations of Ocean Sector of the Colombian Pacific Basin  

作　　者：José Manuel Gutiérrez-Salcedo Adibe Cárdenas-Oliva Néstor H. Campos José Manuel Gutiérrez-Salcedo;Adibe Cárdenas-Oliva;Néstor H. Campos(Marine Fauna of Colombia, Biodiversity and Uses Research Group, Universidad Nacional de Colombia, Caribbean Headquarters, Santa Marta, Colombia;Museo de Historia Natural Marina de Colombia—MHNMC (Makuriwa), Instituto de Investigaciones Marinas y Costeras—INVEMAR, Santa Marta, Colombia;Instituto de Estudios en Ciencias del Mar—CECIMAR. Universidad Nacional de Colombia, Caribbean Headquarters, Santa Marta, Colombia)

机构地区：[1]Marine Fauna of Colombia, Biodiversity and Uses Research Group, Universidad Nacional de Colombia, Caribbean Headquarters, Santa Marta, Colombia [2]Museo de Historia Natural Marina de Colombia—MHNMC (Makuriwa), Instituto de Investigaciones Marinas y Costeras—INVEMAR, Santa Marta, Colombia [3]Instituto de Estudios en Ciencias del Mar—CECIMAR. Universidad Nacional de Colombia, Caribbean Headquarters, Santa Marta, Colombia

出　　处：《Open Journal of Ecology》2021年第4期317-343,共27页生态学期刊（英文）

摘　　要：Studies of holoplanktonic polychaetes in the Tropical Eastern Pacific have focused on their systematics and distribution however, population responses related to climate variability are non-existent. Therefore, the present work described for the first time the influence of the climatic variability 2004-2012 on the holoplanktonic polychaetes populations, as well as their relationship to environmental variables. Species of the Alciopidae, Lopadorrhynchidae and Iospilidae families were identified from 85 samples collected in the Pacific Basin of Colombia, contrasting them with the presence of ENSO, and correlating them with the environmental variables of temperature, salinity and chlorophyll-<em>α</em> concentration. Of the 14 species identified, only <em>Lopadorrhynchus</em> cf. <em>henseni</em> and <em>L</em>. cf. <em>brevis</em> increased their densities under El Ni<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#241;</span></span>o and correlated positively with temperature. <em>Rhynchonereella</em> cf. <em>petersii</em> correlated negatively with temperature;while <em>R</em>. cf. <em>gracilis</em> and <em>Pelagobia</em> cf. <em>longicirrata</em> were positively correlated with chlorophyll-<em>α</em> concentration and salinity, respectively. Additionally, with the first description of the environmental ranges of the 14 species identified for the Colombian Pacific basin, it was found that the most commons species presented broader environmental ranges. The results from the current research are consistent with previous studies in other regions of the Pacific and latitudes. The responses of the organisms suggest trophic and mobility trends that were not known for tropical holoplanktonic polychaete species.Studies of holoplanktonic polychaetes in the Tropical Eastern Pacific have focused on their systematics and distribution however, population responses related to climate variability are non-existent. Therefore, the present work described for the first time the influence of the climatic variability 2004-2012 on the holoplanktonic polychaetes populations, as well as their relationship to environmental variables. Species of the Alciopidae, Lopadorrhynchidae and Iospilidae families were identified from 85 samples collected in the Pacific Basin of Colombia, contrasting them with the presence of ENSO, and correlating them with the environmental variables of temperature, salinity and chlorophyll-<em>α</em> concentration. Of the 14 species identified, only <em>Lopadorrhynchus</em> cf. <em>henseni</em> and <em>L</em>. cf. <em>brevis</em> increased their densities under El Ni<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#241;</span></span>o and correlated positively with temperature. <em>Rhynchonereella</em> cf. <em>petersii</em> correlated negatively with temperature;while <em>R</em>. cf. <em>gracilis</em> and <em>Pelagobia</em> cf. <em>longicirrata</em> were positively correlated with chlorophyll-<em>α</em> concentration and salinity, respectively. Additionally, with the first description of the environmental ranges of the 14 species identified for the Colombian Pacific basin, it was found that the most commons species presented broader environmental ranges. The results from the current research are consistent with previous studies in other regions of the Pacific and latitudes. The responses of the organisms suggest trophic and mobility trends that were not known for tropical holoplanktonic polychaete species.

关 键 词：Temperature CHLOROPHYLL Oceanic Province Tropical Region El Niño Southern Oscillation—ENOS 

分 类 号：P73[天文地球—海洋科学]