Spatial and seasonal differences in the top predators of Easter Island: Essential data for implementing the new Rapa Nui multiple‐uses marine protected area
Reef fishes are an important component of marine biodiversity, and changes in the composition of the assemblage structure may indicate ecological, climatic, or anthropogenic disturbances. To examine spatial differences in the reef fish assemblage structure around Easter Island, eight sites were samp...
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ftutexasriogrand:oai:scholarworks.utrgv.edu:eems_fac-1056 2023-05-15T14:02:25+02:00 Spatial and seasonal differences in the top predators of Easter Island: Essential data for implementing the new Rapa Nui multiple‐uses marine protected area Morales, Naiti A. Easton, Erin E. Friedlander, Alan M. Harvey, Euan S. Garcia, Rodrigo Gaymer, Carlos F. 2019-10-21T07:00:00Z application/pdf https://scholarworks.utrgv.edu/eems_fac/56 https://scholarworks.utrgv.edu/cgi/viewcontent.cgi?article=1056&context=eems_fac unknown ScholarWorks @ UTRGV https://scholarworks.utrgv.edu/eems_fac/56 https://scholarworks.utrgv.edu/cgi/viewcontent.cgi?article=1056&context=eems_fac Earth, Environmental, and Marine Sciences Faculty Publications and Presentations BRUVs Easter Island top predators sharks remote islands trophic groups management conservation Earth Sciences Environmental Sciences Marine Biology text 2019 ftutexasriogrand 2022-05-08T10:47:28Z Reef fishes are an important component of marine biodiversity, and changes in the composition of the assemblage structure may indicate ecological, climatic, or anthropogenic disturbances. To examine spatial differences in the reef fish assemblage structure around Easter Island, eight sites were sampled during autumn and summer 2016–2017 with baited remote underwater video systems. To determine seasonal changes, quarterly (seasonal) sampling was conducted at five of those eight sites. Fifteen pelagic species of fishes were recorded during this study, some of which have not previously been recorded in scuba surveys, including the Galapagos shark (Carcharhinus galapagensis, Snodgrass & Heller, 1905) and tunas (Scrombidae). Significant spatial and seasonal differences were found in the fish assemblage. Fish assemblages from the south coast differed significantly from those along the west and east coasts, mainly due to the occurrence of top predators. Winter differed from other seasons, especially along the south coast where the island is more exposed to large oceanic swells and winds from Antarctica. Owing to the variety and high relative abundance of species recorded during this survey, baited remote underwater video systems seemed to be an effective method for studying top predators at Easter Island. The identification of priority zones for the protection of top predator species represents an important contribution of this study, in order to develop management and conservation strategies to be implemented in the newly created Rapa Nui multiple uses coastal marine protected areas. Text Antarc* Antarctica Scholarworks@UTRGV (The University of Texas RioGrande Valley) Galapagos Rapa ENVELOPE(15.539,15.539,69.033,69.033) Rapa Nui ENVELOPE(-60.800,-60.800,-62.450,-62.450) |
institution |
Open Polar |
collection |
Scholarworks@UTRGV (The University of Texas RioGrande Valley) |
op_collection_id |
ftutexasriogrand |
language |
unknown |
topic |
BRUVs Easter Island top predators sharks remote islands trophic groups management conservation Earth Sciences Environmental Sciences Marine Biology |
spellingShingle |
BRUVs Easter Island top predators sharks remote islands trophic groups management conservation Earth Sciences Environmental Sciences Marine Biology Morales, Naiti A. Easton, Erin E. Friedlander, Alan M. Harvey, Euan S. Garcia, Rodrigo Gaymer, Carlos F. Spatial and seasonal differences in the top predators of Easter Island: Essential data for implementing the new Rapa Nui multiple‐uses marine protected area |
topic_facet |
BRUVs Easter Island top predators sharks remote islands trophic groups management conservation Earth Sciences Environmental Sciences Marine Biology |
description |
Reef fishes are an important component of marine biodiversity, and changes in the composition of the assemblage structure may indicate ecological, climatic, or anthropogenic disturbances. To examine spatial differences in the reef fish assemblage structure around Easter Island, eight sites were sampled during autumn and summer 2016–2017 with baited remote underwater video systems. To determine seasonal changes, quarterly (seasonal) sampling was conducted at five of those eight sites. Fifteen pelagic species of fishes were recorded during this study, some of which have not previously been recorded in scuba surveys, including the Galapagos shark (Carcharhinus galapagensis, Snodgrass & Heller, 1905) and tunas (Scrombidae). Significant spatial and seasonal differences were found in the fish assemblage. Fish assemblages from the south coast differed significantly from those along the west and east coasts, mainly due to the occurrence of top predators. Winter differed from other seasons, especially along the south coast where the island is more exposed to large oceanic swells and winds from Antarctica. Owing to the variety and high relative abundance of species recorded during this survey, baited remote underwater video systems seemed to be an effective method for studying top predators at Easter Island. The identification of priority zones for the protection of top predator species represents an important contribution of this study, in order to develop management and conservation strategies to be implemented in the newly created Rapa Nui multiple uses coastal marine protected areas. |
format |
Text |
author |
Morales, Naiti A. Easton, Erin E. Friedlander, Alan M. Harvey, Euan S. Garcia, Rodrigo Gaymer, Carlos F. |
author_facet |
Morales, Naiti A. Easton, Erin E. Friedlander, Alan M. Harvey, Euan S. Garcia, Rodrigo Gaymer, Carlos F. |
author_sort |
Morales, Naiti A. |
title |
Spatial and seasonal differences in the top predators of Easter Island: Essential data for implementing the new Rapa Nui multiple‐uses marine protected area |
title_short |
Spatial and seasonal differences in the top predators of Easter Island: Essential data for implementing the new Rapa Nui multiple‐uses marine protected area |
title_full |
Spatial and seasonal differences in the top predators of Easter Island: Essential data for implementing the new Rapa Nui multiple‐uses marine protected area |
title_fullStr |
Spatial and seasonal differences in the top predators of Easter Island: Essential data for implementing the new Rapa Nui multiple‐uses marine protected area |
title_full_unstemmed |
Spatial and seasonal differences in the top predators of Easter Island: Essential data for implementing the new Rapa Nui multiple‐uses marine protected area |
title_sort |
spatial and seasonal differences in the top predators of easter island: essential data for implementing the new rapa nui multiple‐uses marine protected area |
publisher |
ScholarWorks @ UTRGV |
publishDate |
2019 |
url |
https://scholarworks.utrgv.edu/eems_fac/56 https://scholarworks.utrgv.edu/cgi/viewcontent.cgi?article=1056&context=eems_fac |
long_lat |
ENVELOPE(15.539,15.539,69.033,69.033) ENVELOPE(-60.800,-60.800,-62.450,-62.450) |
geographic |
Galapagos Rapa Rapa Nui |
geographic_facet |
Galapagos Rapa Rapa Nui |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Earth, Environmental, and Marine Sciences Faculty Publications and Presentations |
op_relation |
https://scholarworks.utrgv.edu/eems_fac/56 https://scholarworks.utrgv.edu/cgi/viewcontent.cgi?article=1056&context=eems_fac |
_version_ |
1766272693541273600 |