Pub Date : 2017-11-01DOI: 10.4067/S0718-686X2017000200051
N. Rozbaczylo, Pamela Vásquez-Yáñez, Rodrigo A. Moreno, Ó. Díaz-Díaz
Benthic polychaetes belonging to Amphinomida, Phyllodocida and Eunicida orders collected in the austral Chilean channel and fjord region, in the Magellanic biogeographic province (42oS-56oS), from the Reloncaví estuary (41°25’S) to Obstruction estuary (52°11’S), between 26 and 1173 meters water depth, were identified and characterized. Polychaetes were collected during the research cruises CIMAR 13, 14, 15, 17, 18 and 20 Fjords, between the years 2007 and 2014 (CIMAR; Marine Research Cruises in Remote Areas). One hundred 52 N. ROZBACZYLO et al. and 17 oceanographic stations were analyzed, distributed in each cruise ordered geographycally from north to south as follows: CIMAR 17, 24 sampling stations, from Estero Reloncaví (41°40’S, 72°24’O) to Boca del Guafo (43°49’S, 74°23’O); CIMAR 13, 25 sampling stations, from Boca del Guafo (43°46,40’S) to Estero Elefantes (46°29,00’S); CIMAR 18, 16 sampling stations, from Boca del Guafo (43°46,40’S) to Estero Elefantes (46°29,00’S, 73°49,00’O); CIMAR 20, 26 sampling stations, from Golfo de Penas to Canal Trinidad; CIMAR 14, 15 sampling stations, between Golfo de Penas and Canal Trinidad (47°S a 50°10’O) and CIMAR 15, 11 sampling stations, from Seno Europa (50°07,00’S, 74°14,20’O) to Estero Obstrucción (52°11,00’S, 72°32,20’O). The samples analyzed in this study ware obtained on board the RV AGOR 60 “Vidal Gormaz”, during the CIMAR cruises 13, 14 and 15 Fjords, B/I “Abate Molina” CIMAR cruises 17 and 18 Fjords and AGS 61 “Cabo de Hornos” during the CIMAR cruise 20. In the total area thirtynine species in 15 families were identified. The best represented families were Polynoidae (9 species), Nereididae (5 species) and Lumbrineridae (5 species). Of the species collected, seven constitute new records for the study area and three are new records for Chile.
{"title":"Poliquetos bentónicos Amphinomida, Phyllodocida y Eunicida (Annelida: Polychaeta) de la región de fiordos y canales australes de Chile recolectados durante los cruceros CIMAR 13 al 20 fiordos","authors":"N. Rozbaczylo, Pamela Vásquez-Yáñez, Rodrigo A. Moreno, Ó. Díaz-Díaz","doi":"10.4067/S0718-686X2017000200051","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000200051","url":null,"abstract":"Benthic polychaetes belonging to Amphinomida, Phyllodocida and Eunicida orders collected in the austral Chilean channel and fjord region, in the Magellanic biogeographic province (42oS-56oS), from the Reloncaví estuary (41°25’S) to Obstruction estuary (52°11’S), between 26 and 1173 meters water depth, were identified and characterized. Polychaetes were collected during the research cruises CIMAR 13, 14, 15, 17, 18 and 20 Fjords, between the years 2007 and 2014 (CIMAR; Marine Research Cruises in Remote Areas). One hundred 52 N. ROZBACZYLO et al. and 17 oceanographic stations were analyzed, distributed in each cruise ordered geographycally from north to south as follows: CIMAR 17, 24 sampling stations, from Estero Reloncaví (41°40’S, 72°24’O) to Boca del Guafo (43°49’S, 74°23’O); CIMAR 13, 25 sampling stations, from Boca del Guafo (43°46,40’S) to Estero Elefantes (46°29,00’S); CIMAR 18, 16 sampling stations, from Boca del Guafo (43°46,40’S) to Estero Elefantes (46°29,00’S, 73°49,00’O); CIMAR 20, 26 sampling stations, from Golfo de Penas to Canal Trinidad; CIMAR 14, 15 sampling stations, between Golfo de Penas and Canal Trinidad (47°S a 50°10’O) and CIMAR 15, 11 sampling stations, from Seno Europa (50°07,00’S, 74°14,20’O) to Estero Obstrucción (52°11,00’S, 72°32,20’O). The samples analyzed in this study ware obtained on board the RV AGOR 60 “Vidal Gormaz”, during the CIMAR cruises 13, 14 and 15 Fjords, B/I “Abate Molina” CIMAR cruises 17 and 18 Fjords and AGS 61 “Cabo de Hornos” during the CIMAR cruise 20. In the total area thirtynine species in 15 families were identified. The best represented families were Polynoidae (9 species), Nereididae (5 species) and Lumbrineridae (5 species). Of the species collected, seven constitute new records for the study area and three are new records for Chile.","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129634658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-01DOI: 10.4067/S0718-686X2017000200007
G. S. Martín, N. Rozbaczylo, Ó. Díaz-Díaz
An updated review of polychaete species of the family Syllidae registered so far in the southeastern Pacific Ocean along the coast of Chile, from the locality of Arica (18o28’ S) in the northern border to Cape Horn (55o56’ S) at the southern end, in Juan Fernández Archipelago (33°40’ S, 79°00’ W) and Easter Island (27°09’ S, 109°23’ W) is presented. Keys to the determination of the subfamilies, genera and species of syllids registered in Chile are provided. A chronological list of the authors who have reviewed specimens for each 8 G. SAN MARTÍN et al. of the species considered valid is included. All collecting localities of each species in chronological and latitudinal order, with the author’s name and the date of the publication in which the locations were identified are included. Information on morphology, biology, ecology and systematics of syllids in general is provided. The number of syllids registered so far along the Chilean coast is 63 species, of these 56 species have been recorded to the continental coastal littoral of Chile, five species in Juan Fernández Archipelago and eight species in Easter Island, in 25 genera, distributed in five subfamilies, in the three areas considered within the limits of the Chilean sea. Of the 63 species of syllids recorded so far along the coast of Chile, including the austral channels and fjords, the Juan Fernández Archipelago and Easter Island, 32 record the coast of Chile as type locality, two the Juan Fernández Archipelago, and of them 22 species are considered endemic to Chile.
本文介绍了迄今为止在智利沿海的太平洋东南部从北部边界的阿里卡(18o28′S)到南端的合恩角(55o56′S)， Juan Fernández群岛(33°40′S, 79°00′W)和复活节岛(27°09′S, 109°23′W)登记的Syllidae科多毛纲物种的最新综述。提供了在智利登记的syllids亚科，属和种的确定关键。包括对每个8 G. SAN MARTÍN等人认为有效的物种的标本进行审查的作者的时间顺序列表。每个物种的所有采集地点按时间顺序和纬度顺序排列，包括作者姓名和确定地点的出版日期。提供了一般syllids的形态学、生物学、生态学和系统学方面的信息。到目前为止，智利沿海登记的syllids数量为63种，其中56种记录在智利大陆沿海地区，胡安Fernández群岛有5种，复活节岛有8种，分布在智利海范围内的三个区域，分为5个亚科，共25属。在智利海岸(包括南部海峡和峡湾、胡安Fernández群岛和复活节岛)迄今记录的63种syllids中，32种记录智利海岸为模式地点，2种记录胡安Fernández群岛，其中22种被认为是智利特有的。
{"title":"Guía y claves para el reconocimiento de las subfamilias, géneros y especies de Syllidae registradas a lo largo de la costa de Chile, archipiélago Juan Fernández e isla de Pascua (Annelida: Phyllodocida: Syllidae)","authors":"G. S. Martín, N. Rozbaczylo, Ó. Díaz-Díaz","doi":"10.4067/S0718-686X2017000200007","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000200007","url":null,"abstract":"An updated review of polychaete species of the family Syllidae registered so far in the southeastern Pacific Ocean along the coast of Chile, from the locality of Arica (18o28’ S) in the northern border to Cape Horn (55o56’ S) at the southern end, in Juan Fernández Archipelago (33°40’ S, 79°00’ W) and Easter Island (27°09’ S, 109°23’ W) is presented. Keys to the determination of the subfamilies, genera and species of syllids registered in Chile are provided. A chronological list of the authors who have reviewed specimens for each 8 G. SAN MARTÍN et al. of the species considered valid is included. All collecting localities of each species in chronological and latitudinal order, with the author’s name and the date of the publication in which the locations were identified are included. Information on morphology, biology, ecology and systematics of syllids in general is provided. The number of syllids registered so far along the Chilean coast is 63 species, of these 56 species have been recorded to the continental coastal littoral of Chile, five species in Juan Fernández Archipelago and eight species in Easter Island, in 25 genera, distributed in five subfamilies, in the three areas considered within the limits of the Chilean sea. Of the 63 species of syllids recorded so far along the coast of Chile, including the austral channels and fjords, the Juan Fernández Archipelago and Easter Island, 32 record the coast of Chile as type locality, two the Juan Fernández Archipelago, and of them 22 species are considered endemic to Chile.","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121615935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-09-04DOI: 10.4067/S0718-686X2017000200117
Gregor J. Stipicic, Gabriela Simonetti-Grez, J. Simonetti
{"title":"Primer registro de canquén colorado ( Chloephaga rubidiceps , Sclater, 1861) (Aves: Anatidae) en Isla Riesco, Magallanes","authors":"Gregor J. Stipicic, Gabriela Simonetti-Grez, J. Simonetti","doi":"10.4067/S0718-686X2017000200117","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000200117","url":null,"abstract":"","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130531169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-30DOI: 10.4067/S0718-686X2017000100031
Álvaro González-Reyes, J. Aravena, A. A. Muñoz, Pamela Soto-Rogel, Isabella Aguilera-Betti, Isadora Toledo-Guerrero
Registros de precipitacion instrumental extensos y continuos son escasos en America del Sur, y aun mas en altas latitudes. Estos registros son utiles para contrastar reconstrucciones climaticas del pasado y calibrar modelos climaticos regionales. Pocas ciudades de Chile (e.g. Santiago, Concepcion, Valdivia, Punta Arenas), poseen observaciones meteorologicas extensas desde mediados del siglo XIX o principios del siglo XX. El analisis de estos registros es tambien fundamental para evaluar los cambios recientes en el clima respecto de periodos previos, informacion especialmente util para delinear politicas de adaptacion. Este trabajo analizo la pluviometria de Punta Arenas y tuvo como objetivos: i) evaluar los cambios mensuales, estacionales y anuales de la precipitacion en los periodos 1900-2014 y 1990-2014, ii) evaluar la recurrencia de eventos de sequias, y iii) analizar la relacion entre la precipitacion y el Modo Anular del Sur (SAM). Los resultados evidenciaron una fuerte variabilidad decadal a multi-decadal en la precipitacion anual y en cada estacion del ano. Reducciones significativas se observaron en la precipitacion anual durante el periodo 1900- 2014, siendo mas acentuadas entre 1990- 2014. En este ultimo periodo, la precipitacion de primavera y verano presento una reduccion significativa, sugiriendo una extension de las condiciones estivales. En invierno, un significativo incremento fue observado desde el ano 1990. La recurrencia de eventos extremos de sequias severas tambien se incremento posterior al ano 1990. Relaciones negativas y significativas entre la actividad SAM y la precipitacion anual se observaron en marzo y en el intervalo septiembre-diciembre. La reduccion en la precipitacion de la ciudad de Punta Arenas estaria estrechamente relacionada con la actividad SAM, el cual modularia la variabilidad de las precipitaciones a escalas temporales interanuales e interdecadales. Abstract Extended and continuous instrumental records of precipitation are scarce in South America, even more at high latitudes. These records are useful to validate past climatic reconstructions and calibrate regional climatic models. Few Chilean cities (e.g. Santiago, Concepcion, and Valdivia) present long meteorological observations, since mid-19th century and/or the beginning of 20th century. The analysis of these records is also key to assessing recent changes In the climate with respect to previous periods. This Information is especially useful for delineating adaptation policies. This paper studied the Punta Arenas rainfall record seeking for the following aims: i) to evaluate monthly, seasonal, and annual variations of rainfall records over the 1900- 2014 and 1990-2014 interval, ii) to evaluate the recurrence of drought extreme events in annual precipitation, and iii) to analyze the relationship between precipitation and the Southern Annular Mode (SAM). The findings evidenced strong decadal to multi-decadal variability in the annual and seasonal precip
在南美洲，广泛和连续的仪器降水记录是罕见的，在高纬度地区甚至更多。这些记录有助于对比过去的气候重建和校准区域气候模型。自19世纪中期或20世纪初以来，智利很少有城市(如圣地亚哥、康塞普西翁、瓦尔迪维亚、蓬塔阿雷纳斯)进行了广泛的气象观测。对这些记录的分析对于评估最近与前一时期相比的气候变化也至关重要，这些信息对制定适应政策特别有用。这个测试Punta Arenas pluviometria和工作有目标:(一)评估和年度季节性月度变化,precipitacion 1900-2014时期和1990-2014;㈡评估事件复发sequias;(三)分析precipitacion之间的关系以及南方环形(SAM)的方式。在本研究中，我们分析了不同季节的年降水量和季节间的变化。1900- 2014年期间，年降水量显著减少，1990- 2014年期间降水量更大。在最后一个时期，春季和夏季的降雨量显著减少，表明夏季条件延长。在冬季，自1990年以来观察到显著增加。1990年以后，极端严重干旱事件的复发也有所增加。3月和9 - 12月间观测到SAM活动与年降雨量呈正相关且显著。蓬塔阿雷纳斯市的降水减少与SAM活动密切相关，SAM活动在年际和年际时间尺度上调节降水的变化。在南美洲，抽象的、扩展的和连续的仪器降水记录是罕见的，在高纬度地区甚至更罕见。这些记录有助于验证过去的气候重建和校准区域气候模式。智利的一些城市(如圣地亚哥、康塞普西翁和瓦尔迪维亚)自19世纪中期和/或20世纪初以来进行了长期的气象观测。对这些记录的分析也是评估近期气候变化与前一时期相比的关键。这些信息对设计适应政策特别有用。This paper studied the Punta Arenas rainfall seeking for the记录下列区域:(一)每月的、季节性和年度variations of rainfall records over the 1900年- 2014年和1990-2014 interval,㈡to犯罪性recurrence of干旱extreme events in annual precipitation;和㈢to analyze the relationship between precipitation and the Southern Annular Mode (SAM)。研究结果表明，年降水量和季节降水量具有很强的年至多年变异性。在1900-2014年期间，年降水量显著下降，1990-2014年期间降水量更严重。= =地理= =根据美国人口普查局的数据，这个县的总面积，其中土地和(0.3%)水。= =地理= =根据美国人口普查局的数据，该县总面积为，其中土地和(1.0%)水。= =地理= =根据美国人口普查局的数据，该县总面积为，其中土地和(1.0%)水。= =地理= =根据美国人口普查局的数据，该镇总面积为，其中土地和(1.1%)水。蓬塔阿里纳斯的降雪模式与年际至年际时间尺度的SAM变化密切相关。
{"title":"Variabilidad de la precipitación en la ciudad de Punta Arenas, Chile, desde principios del siglo XX","authors":"Álvaro González-Reyes, J. Aravena, A. A. Muñoz, Pamela Soto-Rogel, Isabella Aguilera-Betti, Isadora Toledo-Guerrero","doi":"10.4067/S0718-686X2017000100031","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000100031","url":null,"abstract":"Registros de precipitacion instrumental extensos y continuos son escasos en America del Sur, y aun mas en altas latitudes. Estos registros son utiles para contrastar reconstrucciones climaticas del pasado y calibrar modelos climaticos regionales. Pocas ciudades de Chile (e.g. Santiago, Concepcion, Valdivia, Punta Arenas), poseen observaciones meteorologicas extensas desde mediados del siglo XIX o principios del siglo XX. El analisis de estos registros es tambien fundamental para evaluar los cambios recientes en el clima respecto de periodos previos, informacion especialmente util para delinear politicas de adaptacion. Este trabajo analizo la pluviometria de Punta Arenas y tuvo como objetivos: i) evaluar los cambios mensuales, estacionales y anuales de la precipitacion en los periodos 1900-2014 y 1990-2014, ii) evaluar la recurrencia de eventos de sequias, y iii) analizar la relacion entre la precipitacion y el Modo Anular del Sur (SAM). Los resultados evidenciaron una fuerte variabilidad decadal a multi-decadal en la precipitacion anual y en cada estacion del ano. Reducciones significativas se observaron en la precipitacion anual durante el periodo 1900- 2014, siendo mas acentuadas entre 1990- 2014. En este ultimo periodo, la precipitacion de primavera y verano presento una reduccion significativa, sugiriendo una extension de las condiciones estivales. En invierno, un significativo incremento fue observado desde el ano 1990. La recurrencia de eventos extremos de sequias severas tambien se incremento posterior al ano 1990. Relaciones negativas y significativas entre la actividad SAM y la precipitacion anual se observaron en marzo y en el intervalo septiembre-diciembre. La reduccion en la precipitacion de la ciudad de Punta Arenas estaria estrechamente relacionada con la actividad SAM, el cual modularia la variabilidad de las precipitaciones a escalas temporales interanuales e interdecadales. Abstract Extended and continuous instrumental records of precipitation are scarce in South America, even more at high latitudes. These records are useful to validate past climatic reconstructions and calibrate regional climatic models. Few Chilean cities (e.g. Santiago, Concepcion, and Valdivia) present long meteorological observations, since mid-19th century and/or the beginning of 20th century. The analysis of these records is also key to assessing recent changes In the climate with respect to previous periods. This Information is especially useful for delineating adaptation policies. This paper studied the Punta Arenas rainfall record seeking for the following aims: i) to evaluate monthly, seasonal, and annual variations of rainfall records over the 1900- 2014 and 1990-2014 interval, ii) to evaluate the recurrence of drought extreme events in annual precipitation, and iii) to analyze the relationship between precipitation and the Southern Annular Mode (SAM). The findings evidenced strong decadal to multi-decadal variability in the annual and seasonal precip","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123481485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-30DOI: 10.4067/S0718-686X2017000100005
P. Aguero, C. Toro, R. Khondoker, M. Salamanca, B. Jara, Carlos Cárdenas
Se ha llevado a cabo una investigacion del impacto potencial sobre la Antartica de la erupcion del volcan Chaiten, ubicado en el sur de Chile (42o49’58”S - 72o38’45”O). Variaciones en el contenido de elementos quimicos principales en la precipitacion nivosa fresca en la base antartica chilena B. O’Higgins fue monitoreado por ICPMS analisis durante el ano 2008. Sus principales componentes y las proporciones isotopicas de plomo se compararon con la composicion quimica de las cenizas recolectadas durante la erupcion. Los resultados del analisis indican un cambio significativo en la composicion de la nieve antartica a partir de agosto de 2008, cuatro meses despues de la erupcion del volcan. Se encontro un aumento en el pH y la concentracion de varios elementos en la nieve. Ademas, se detecto un fuerte enriquecimiento del contenido de azufre en las nevadas antarticas. ABSTRACT An investigation of the potential impact on the Antarctic by the 2008 eruption of Chaiten volcano, located in southern Chile (42o49’58”S -72o38’45”W), has been conducted. Major elements content in fresh snowfall was monitored by ICP-MS analysis during the years 2008, at the B. O´Higgins Antarctic Chilean base. Its major chemical components and lead isotopic ratios were compared with the chemical composition of ashfall collected during the eruption. Results from the chemical analysis indicate a significant change in the Antarctic snowfall composition starting in August 2008, four months after the volcano eruption. An increase in the pH and the concentration of several elements in the snowfall was found. Additionally, a strong enrichment of sulfur content in the Antarctic snowfall was detected.
智利南部(42o49 ' 58 " S - 72o38 ' 45 " O)的Chaiten火山爆发对南极的潜在影响已经进行了调查。ICPMS分析在2008年监测了智利南极基地B. O’higgins的鲜雪降水中主要化学元素含量的变化。在火山爆发期间收集的火山灰中，铅的主要成分和同位素比例与化学成分进行了比较。分析结果表明，自2008年8月，即火山爆发4个月后，南极雪的组成发生了显著变化。结果表明，雪中各种元素的pH值和浓度都有所增加。此外，在南极的积雪中检测到硫含量的强烈富集。ABSTRACT调查潜在影响》2008年南极by the eruption of Chaiten volcano, located in southern智利(42o49 ' 58 " S -72o38 45”W), has been建都。2008年，在B. O´Higgins南极智利基地，通过ICP-MS分析对新降雪中的主要成分进行了监测。它的主要化学成分和lead同位素比值与喷发时收集的ashfall化学成分进行了比较。= =地理= =根据美国人口普查，该地区的总面积为，其中土地和(1.1%)水。= =地理= =根据美国人口普查局的数据，该镇总面积为，其中土地和(1.1%)水。= =地理= =根据美国人口普查，这个县的总面积是，其中土地和(5.064平方公里)水。
{"title":"Effect of the 2008 chaitén volcano eruption over the antarctic snowfall / Efecto de la erupción del volcán Chaitén 2008 en la precipitación nivosa de la antártica","authors":"P. Aguero, C. Toro, R. Khondoker, M. Salamanca, B. Jara, Carlos Cárdenas","doi":"10.4067/S0718-686X2017000100005","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000100005","url":null,"abstract":"Se ha llevado a cabo una investigacion del impacto potencial sobre la Antartica de la erupcion del volcan Chaiten, ubicado en el sur de Chile (42o49’58”S - 72o38’45”O). Variaciones en el contenido de elementos quimicos principales en la precipitacion nivosa fresca en la base antartica chilena B. O’Higgins fue monitoreado por ICPMS analisis durante el ano 2008. Sus principales componentes y las proporciones isotopicas de plomo se compararon con la composicion quimica de las cenizas recolectadas durante la erupcion. Los resultados del analisis indican un cambio significativo en la composicion de la nieve antartica a partir de agosto de 2008, cuatro meses despues de la erupcion del volcan. Se encontro un aumento en el pH y la concentracion de varios elementos en la nieve. Ademas, se detecto un fuerte enriquecimiento del contenido de azufre en las nevadas antarticas. ABSTRACT An investigation of the potential impact on the Antarctic by the 2008 eruption of Chaiten volcano, located in southern Chile (42o49’58”S -72o38’45”W), has been conducted. Major elements content in fresh snowfall was monitored by ICP-MS analysis during the years 2008, at the B. O´Higgins Antarctic Chilean base. Its major chemical components and lead isotopic ratios were compared with the chemical composition of ashfall collected during the eruption. Results from the chemical analysis indicate a significant change in the Antarctic snowfall composition starting in August 2008, four months after the volcano eruption. An increase in the pH and the concentration of several elements in the snowfall was found. Additionally, a strong enrichment of sulfur content in the Antarctic snowfall was detected.","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127808709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-12DOI: 10.4067/S0718-686X2017000300087
J. Capella, Frederick Toro, Alejandro Kush, J. Gibbons
{"title":"Nueva colonia reproductiva de foca elefante del sur Mirounga leonina (Linnaeus 1758) (Phocidae) en el sur de Chile","authors":"J. Capella, Frederick Toro, Alejandro Kush, J. Gibbons","doi":"10.4067/S0718-686X2017000300087","DOIUrl":"https://doi.org/10.4067/S0718-686X2017000300087","url":null,"abstract":"","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127522531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-30DOI: 10.4067/S0718-686X2016000300007
Alejandro Vila, G. Aprile, V. Sotelo, Pablo Sugliano, C. Zoratti, M. Berardi, Javier Montbrun
{"title":"Cámaras trampa y huemules: ¿Una alternativa de monitoreo?","authors":"Alejandro Vila, G. Aprile, V. Sotelo, Pablo Sugliano, C. Zoratti, M. Berardi, Javier Montbrun","doi":"10.4067/S0718-686X2016000300007","DOIUrl":"https://doi.org/10.4067/S0718-686X2016000300007","url":null,"abstract":"","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121465601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-30DOI: 10.4067/S0718-686X2016000300002
G. Garay, Oscar Guineo, I. M. Ortega
Abstract There is no better approach in the study of social behavior of a species than recognizing individuals. For the similar looking animals as in the huemul (Hippocamelus bisulcus), were we could only differentiate between sexes and ages, marking became a critical need. In a long-term study of the huemul at Torres del Paine National Park, Chile, we wanted to recognize individuals as young as fawns, hence we adopted the technique learned from Franklin and Johnson (1994) to trap fawns during the birthing season. Teams looked-up for females suspected to have given birth to find the location of the hidden fawn. Once the fawn was located we proceeded to trap and mark it. In this way 16 fawns were trapped, measured, and ear-tagged. These animals were key for a better understanding of several aspects of the ecology of the huemul at that park. Resumen Una de las mejores formas para el estudio del comportamiento social de una especie, es el reconocimiento de los individuos. Para los animales de aspecto similar, como en el huemul (Hippocamelus bisulcus), donde solo se puede diferenciar entre sexos y edades, el marcar individuos se convierte en una necesidad critica. En un estudio a largo plazo del huemul realizado en el Parque Nacional Torres del Paine, Magallanes, Chile, el reconocimiento de individuos tan jovenes como cervatillos resulto ser de suma importancia, por lo tanto, se adopto la tecnica aprendida de Franklin y Johnson (1994 ) para atrapar cervatillos durante la temporada de nacimientos. Equipos de investigadores buscaron y observaron hembras de las que se sospechaba haber parido, para asi lograr la ubicacion del cervatillo oculto. Una vez que se encontro el cervatillo se procedio a atraparlo, medirlo y marcarlo. De esta manera se atraparon, midieron y marcaron con auto-crotales a 16 cervatillos. Estos animales marcados fueron clave para una mejor comprension de varios aspectos de la ecologia del huemul en ese parque.
在研究一个物种的社会行为中，没有比识别个体更好的方法了。对于长相相似的动物，比如海马驹(Hippocamelus bisulcus)，如果我们只能区分性别和年龄，标记就成了一种关键的需求。在对智利Torres del Paine国家公园的huemul进行的一项长期研究中，我们想要识别幼鹿的个体，因此我们采用了从Franklin和Johnson(1994)那里学到的技术，在出生季节诱捕幼鹿。小组寻找疑似已经生育的母鹿，以找到隐藏小鹿的位置。一旦小鹿被找到，我们就开始捕捉并标记它。通过这种方式，16只小鹿被困住，测量，并贴上耳朵标签。这些动物是更好地了解该公园huemul生态的几个方面的关键。Resumen Una de las能简称formas对位el工厂化del comportamiento社会de Una especie es el reconocimiento de los individuos。Para - los动物在外貌上相似，有相似之处，也有相似之处(Hippocamelus bisulcus)，在不同的中心性别中有不同的个体，在必要的情况下也有不同的个体。enun estudio a large plazo del huemul realizado En el国家公园Torres del Paine, Magallanes，智利，el reconocimiento de individuo和jovenes como cervatillos resulto ser de suma importancia, por lo tanto, se adopto la tecnica aprendida de Franklin y Johnson (1994) para atrapar cervatillos durante la temporada de nacimientos。研究人员通过观察胎儿的发育情况，观察胎儿的发育情况，观察胎儿的发育情况。“我不知道你是谁，”他说，“我不知道你是谁。”De esta manera se atraparon，中间有marcaron和auto-crotales和16 cervatillos。Estos animales marcados fueron clave para主要是对生态学的各个方面的理解。
{"title":"Tagging huemul fawns (Hippocamelus bisulcus) at Torres del Paine National Park, Magallanes, Chile","authors":"G. Garay, Oscar Guineo, I. M. Ortega","doi":"10.4067/S0718-686X2016000300002","DOIUrl":"https://doi.org/10.4067/S0718-686X2016000300002","url":null,"abstract":"Abstract There is no better approach in the study of social behavior of a species than recognizing individuals. For the similar looking animals as in the huemul (Hippocamelus bisulcus), were we could only differentiate between sexes and ages, marking became a critical need. In a long-term study of the huemul at Torres del Paine National Park, Chile, we wanted to recognize individuals as young as fawns, hence we adopted the technique learned from Franklin and Johnson (1994) to trap fawns during the birthing season. Teams looked-up for females suspected to have given birth to find the location of the hidden fawn. Once the fawn was located we proceeded to trap and mark it. In this way 16 fawns were trapped, measured, and ear-tagged. These animals were key for a better understanding of several aspects of the ecology of the huemul at that park. Resumen Una de las mejores formas para el estudio del comportamiento social de una especie, es el reconocimiento de los individuos. Para los animales de aspecto similar, como en el huemul (Hippocamelus bisulcus), donde solo se puede diferenciar entre sexos y edades, el marcar individuos se convierte en una necesidad critica. En un estudio a largo plazo del huemul realizado en el Parque Nacional Torres del Paine, Magallanes, Chile, el reconocimiento de individuos tan jovenes como cervatillos resulto ser de suma importancia, por lo tanto, se adopto la tecnica aprendida de Franklin y Johnson (1994 ) para atrapar cervatillos durante la temporada de nacimientos. Equipos de investigadores buscaron y observaron hembras de las que se sospechaba haber parido, para asi lograr la ubicacion del cervatillo oculto. Una vez que se encontro el cervatillo se procedio a atraparlo, medirlo y marcarlo. De esta manera se atraparon, midieron y marcaron con auto-crotales a 16 cervatillos. Estos animales marcados fueron clave para una mejor comprension de varios aspectos de la ecologia del huemul en ese parque.","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130355197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-01DOI: 10.4067/S0718-686X2016000300005
Claudio A. González-Wevar, M. Hüne, Sebastian Rosenfeld, Karin Gérard, A. Mansilla, Elie Poulin
Resumen La biogeografia del Oceano Austral es el resultado de la compleja interaccion de distintas fuerzas macroevolutivas sobre su particular biota en el tiempo y en el espacio. Los procesos de tectonica de placas que derivaron en la separacion de los continentes junto al establecimiento de la Corriente Circumpolar Antartica y el enfriamiento paulatino de la region desde el Eoceno se han asociado directamente a la composicion, abundancia y distribucion de su fauna marina bentonica. Mas recientemente, los procesos glaciales del Cuaternario impactaron fuertemente la distribucion de la variacion genetica intraespecifica en una variedad de taxones. El genero Nacella (Patellogastropoda: Nacellidae) incluye 11 especies nominales que se distribuyen en distintas provincias del Oceano Austral. En este estudio se compararon los patrones de diversidad y estructura genetica a nivel del DNA mitocondrial de cuatro especies de Nacella provenientes de Antartica maritima (Nacella concinna), Sudamerica (Nacella magellanica) y de dos islas ubicadas en el sector Indico del Oceano Austral: Kerguelen (Nacella edgari) y Marion (Nacella delesserti). Bajos niveles de diversidad genetica y ausencia de estructura caracterizan a cada una de las especies analizadas lo que muestra el tremendo impacto del avance y retroceso de los hielos sobre la demografia de todas ellas. Baja diversidad haplotipica, genealogias cortas y las demografias especificas sugieren la ocurrencia de efectos poblacionales mas severos en Antartica maritima e Isla Marion que en el resto de las regiones subantarticas. Abstract The biogeography of the Southern Ocean is the result of the complex interaction of different macroevolutionary forces over its particular biota in space and time. Plate tectonics processes derived in the separation of the continents, together with the establishment of the Antarctic Circumpolar Current and the gradual cooling of the region since the Eocene, are directly associated to the composition, abundance, and distribution of its marine benthic fauna. More recently, glacial processes of the Quaternary strongly impacted the distribution of the intraspecific genetic variation in different taxa. The genus Nacella (Patellogastropoda: Nacellidae) includes 11 nominal species that are distributed in different provinces of the Southern Ocean. In this study, we compared mitochondrial DNA patterns of genetic diversity and structure in four Nacella species from maritime Antarctica (Nacella concinna), South America (Nacella magellanica), and two islands located in the Indian sector of the Southern Ocean: Kerguelen (Nacella edgari), and Marion (Nacella delesserti). Low levels of genetic diversity and absence of genetic structure characterize each one of the analyzed species showing the major impact of ice advances and retreats over the species’ demographies. Low haplotypic diversity, short genealogies and specific demographies suggest the occurrence of more severe population effects in mar
{"title":"Patrones de diversidad y estructura genética en especies antárticas y subantárticas de Nacella (Nacellidae)","authors":"Claudio A. González-Wevar, M. Hüne, Sebastian Rosenfeld, Karin Gérard, A. Mansilla, Elie Poulin","doi":"10.4067/S0718-686X2016000300005","DOIUrl":"https://doi.org/10.4067/S0718-686X2016000300005","url":null,"abstract":"Resumen La biogeografia del Oceano Austral es el resultado de la compleja interaccion de distintas fuerzas macroevolutivas sobre su particular biota en el tiempo y en el espacio. Los procesos de tectonica de placas que derivaron en la separacion de los continentes junto al establecimiento de la Corriente Circumpolar Antartica y el enfriamiento paulatino de la region desde el Eoceno se han asociado directamente a la composicion, abundancia y distribucion de su fauna marina bentonica. Mas recientemente, los procesos glaciales del Cuaternario impactaron fuertemente la distribucion de la variacion genetica intraespecifica en una variedad de taxones. El genero Nacella (Patellogastropoda: Nacellidae) incluye 11 especies nominales que se distribuyen en distintas provincias del Oceano Austral. En este estudio se compararon los patrones de diversidad y estructura genetica a nivel del DNA mitocondrial de cuatro especies de Nacella provenientes de Antartica maritima (Nacella concinna), Sudamerica (Nacella magellanica) y de dos islas ubicadas en el sector Indico del Oceano Austral: Kerguelen (Nacella edgari) y Marion (Nacella delesserti). Bajos niveles de diversidad genetica y ausencia de estructura caracterizan a cada una de las especies analizadas lo que muestra el tremendo impacto del avance y retroceso de los hielos sobre la demografia de todas ellas. Baja diversidad haplotipica, genealogias cortas y las demografias especificas sugieren la ocurrencia de efectos poblacionales mas severos en Antartica maritima e Isla Marion que en el resto de las regiones subantarticas. Abstract The biogeography of the Southern Ocean is the result of the complex interaction of different macroevolutionary forces over its particular biota in space and time. Plate tectonics processes derived in the separation of the continents, together with the establishment of the Antarctic Circumpolar Current and the gradual cooling of the region since the Eocene, are directly associated to the composition, abundance, and distribution of its marine benthic fauna. More recently, glacial processes of the Quaternary strongly impacted the distribution of the intraspecific genetic variation in different taxa. The genus Nacella (Patellogastropoda: Nacellidae) includes 11 nominal species that are distributed in different provinces of the Southern Ocean. In this study, we compared mitochondrial DNA patterns of genetic diversity and structure in four Nacella species from maritime Antarctica (Nacella concinna), South America (Nacella magellanica), and two islands located in the Indian sector of the Southern Ocean: Kerguelen (Nacella edgari), and Marion (Nacella delesserti). Low levels of genetic diversity and absence of genetic structure characterize each one of the analyzed species showing the major impact of ice advances and retreats over the species’ demographies. Low haplotypic diversity, short genealogies and specific demographies suggest the occurrence of more severe population effects in mar","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114963194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-12-01DOI: 10.4067/S0718-686X2016000300009
E. Faúndez, F. Téllez
Theridiidae is one of the most diverse families of spiders, including 2472 species classified in 124 genera (World Spider Catalog, 2016). Spiders on this family are widely known for having several synanthropic and cosmopolitan species (Levi, 1967a); as well as species of medical importance (Faúndez & Tellez, 2016b). Parasteatoda tepidariorum (C.L. Koch, 1841) (Figs. 1-2), is a cosmopolitan species of Theriididae, which is usually associated with humans (Levi, 1955, 1967a). This species is believed to have a tropical South American origin, because is the only place on which it has been found unassociated with humans (Levi, 1967a). This species has neurotoxic venom; however its bite has been described as considerably less severe than black widow bite effects (Isbister & Gray, 2003). In Chile, there is little information on this species, and it has been recorded from Antofagasta to Santiago (Taucare-Ríos et al. 2013). The purpose of this contribution is to provide new record for this species from Southern Chile:
{"title":"New records for Parasteatoda tepidariorum (C.L. Koch, 1841) (Araneae: Theridiidae) in Southern Chile","authors":"E. Faúndez, F. Téllez","doi":"10.4067/S0718-686X2016000300009","DOIUrl":"https://doi.org/10.4067/S0718-686X2016000300009","url":null,"abstract":"Theridiidae is one of the most diverse families of spiders, including 2472 species classified in 124 genera (World Spider Catalog, 2016). Spiders on this family are widely known for having several synanthropic and cosmopolitan species (Levi, 1967a); as well as species of medical importance (Faúndez & Tellez, 2016b). Parasteatoda tepidariorum (C.L. Koch, 1841) (Figs. 1-2), is a cosmopolitan species of Theriididae, which is usually associated with humans (Levi, 1955, 1967a). This species is believed to have a tropical South American origin, because is the only place on which it has been found unassociated with humans (Levi, 1967a). This species has neurotoxic venom; however its bite has been described as considerably less severe than black widow bite effects (Isbister & Gray, 2003). In Chile, there is little information on this species, and it has been recorded from Antofagasta to Santiago (Taucare-Ríos et al. 2013). The purpose of this contribution is to provide new record for this species from Southern Chile:","PeriodicalId":207115,"journal":{"name":"Anales Del Instituto De La Patagonia","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117325623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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