• English
    • français
    • español
    • русский
  • English 
    • English
    • français
    • español
    • русский
  • Login
View Item 
  •   Home
  • AMERICAS
  • AMERICAS - Regional Organizations
  • Comision Permanente del Pacifico Sur (CPPS)
  • SPINCAM: Southeast Pacific Data and Information Network in Support to Integrated Coastal Area Management
  • Colombia
  • SPINCAM Publications (Colombia)
  • View Item
  •   Home
  • AMERICAS
  • AMERICAS - Regional Organizations
  • Comision Permanente del Pacifico Sur (CPPS)
  • SPINCAM: Southeast Pacific Data and Information Network in Support to Integrated Coastal Area Management
  • Colombia
  • SPINCAM Publications (Colombia)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse

All of AquaDocsCommunitiesPublication DateAuthorsTitlesSubjectsThis CollectionPublication DateAuthorsTitlesSubjects

My Account

LoginRegister

User Information

About AquaDocsPoliciesUser GuidesOther Aquatic Repositories

Statistics

Display statistics

Distribución y abundancia de las Ascidias de los fondos rocosos de la bahía de Cuajiniquil, Costa Rica

  • CSV
  • RefMan
  • EndNote
  • BibTex
  • RefWorks
Thumbnail
Name:
Art 4_Novoa-Bustos et al_39 (1).pdf
Size:
419.5Kb
Format:
PDF
Download
Average rating
 
   votes
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item. When enough users have cast their vote on this item, the average rating will also be shown.
Star rating
 
Your vote was cast
Thank you for your feedback
Author
Nova Bustos, Nidya
Hernández Zanuy, Aida C.
Viquez Portuguez, Rigoberto
Date
2010

Metadata
Show full item record
Alternative Title
Distribution and abundance of the rocky bottom ascidians of Cuajiniquil Bay, Costa Rica.
Abstract
Las ascidias de la costa del Pacífico centroamericano están muy poco estudiadas a pesar de que este grupo se destaca entre los miembros de la fauna bentónica de los fondos duros de la región. Teniendo en cuenta lo anterior, el objetivo del presente trabajo es conocer la distribución y abundancia de las ascidias en los fondos rocosos de la bahía de Cuajiniquil. Se ofrecen datos de la densidad (individuos por metro cuadrado de fondo) de las ascidias solitarias Rhopalaea birkelandi (Tokioka) y Ascidia ceratodes (Huntsman) a 5, 10 y 15 m de profundidad en tres transectos perpendiculares a la costa que se ubicaron en Isla David, Bajo Rojo y Bajo Viejón, sitios costeros de la bahía de Cuajiniquil, en el noroeste de Costa Rica. Otras tres especies de ascidias coloniales Didemnum moseleyi (Herdman), Lissoclinum caulleryi (Ritter y Forsyth) y Polyandrocarpa tincta (Van Name) forman parte de los fondos rocosos de esta bahía a profundidades mayores de 10 m. El dendrograma de similitud (coeficiente de similitud de Jaccard) muestra elevada semejanza entre los transectos ubicados en Bajo Viejón e Isla David. La diferencia entre la profundidad de 5 m y las de 10 y 15 m es significativa (H= 6.24, gl= 2.51, p= 0.04). En Bajo Rojo sólo se encontraron ascidias solitarias con una densidad promedio 10 veces menor que en los otros dos sitios. Las diferencias pudieran estar relacionadas con la menor disponibilidad de sustrato provocada por las algas pardas que cubren la mayor parte del fondo en Bajo Rojo y/o con la mayor estabilidad ambiental de las comunidades de fondos duros que se encuentran en los bordes de la boca de la bahía, más expuestos al intercambio con el océano y alejados del impacto que los sedimentos provenientes del río Cuajiniquil pudiera estar provocando en el centro de la bahía.
he ascidians of the Central-American Pacific coast are poorly studied, although this group is one of the most important members of the benthic fauna of this region. The present study shows data of density (individuals per square meter) of the solitary ascidians Rhopalaea birkelandi (Tokioka) and Ascidia ceratodes (Huntsman), at 5, 10 and 15 m deep in three transects perpendicular to the coast. These transects were located in Isla David, Bajo Rojo and Bajo Viejón, coastal areas of Cuajiniquil Bay, northeast coast Costa Rica. Other three species of colonial ascidians, Didemnum moseleyi (Herdman), Lissoclinum caulleryi (Ritter y Forsyth) and Polyandrocarpa tincta (Van Name), are part of the benthic communities of the rocky bottoms of this bay at depths greater than 10 m. The cluster analysis (using Jaccard similarity coefficient) shows a high similarity between transects located at Bajo Viejón and Isla David. The difference between 5, 10 and 15 m deep is significant (H= 6.24, gl= 2.51, p= 0.04). In Bajo Rojo only solitary ascidians were found with an average density ten times lower than other sites. These differences could be related to lower substratum availability due to the stronger competition with brown algae which covers most of the sea bottom at Bajo Rojo and/or the higher environmental stability of the hard bottom communities that are usually found on the edges of the higher part of the bay, greatly exposed to oceanic waters and away from impacts that sediments from the Cuajiniquil river could be producing in the middle part of the bay.
Journal
Boletín de Investigaciones Marinas y Costeras
Volume
39
Issue/Article Nr
1
Page Range
pp.57-66
URI
http://hdl.handle.net/1834/6767
Collections
SPINCAM Publications (Colombia)

entitlement

 

DSpace software (copyright © 2002 - 2023)  DuraSpace
Quick Guide | Contact Us | Disclaimer
Open Repository is a service operated by 
Atmire NV
 

Export search results

The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.