FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2182809377> ?p ?o ?g. }

• W2182809377 endingPage "308" @default.
• W2182809377 startingPage "287" @default.
• W2182809377 abstract "A one year study (February, 1985 - March, 1986) was conducted to investigate changes in community structure within a 484 m2 area of an intertidal mud flat (more than 30% silt +clay) in the Gulf of Nicoya, Costa Rica (10° N, 85° W). Core samples (core area: 17.7 cm2) for macrofauna were collected monthly to a depth of 15 cm into the sediment, and preserved in 10% buffered formalin in sea water stained with Rose Bengal. Organisms retained on a 500 micron mesh sieve were considered as macrofauna. A total of 79 species was collected, with an approximate density of 14,798 individuals per m2. This density is relatively high and very similar to that found the previous year. Diversity (H') ranged from 1.61 to 3.12 and evenness (J) varied from 0.46 to 0.85. Polychaete worms dominated the community in terms of the number of individuals and species, followed by microcrustaceans (the ostracod, Cyprideis pacifica and an undescribed cumacean), molluscs, and miscellaneous groups. The numerical dominance by the polychaetes was mainly due to the spionids, Polydora citrona and Paraprionospio pinnata and the capitellid, Mediomastus californiensis, which together represented 41% of the fauna. These results are in contrast with those found the previous year, when C. pacifica and the cumacean represented 43.4% of the fauna, and the polyehaetes, M. californiensis, P. pinnata and, Lumbrineris tetraura accounted for 19.2% of the total. Most of the remaining species, however, were collected during both surveys and at very similar abundances. Thus, the observed abundance fluctuations of the dominant species are considered as natural oscillations of the community. Cluster analysis divided the biological data set into groups that corresponded in time with the observed dry and rainy seasons typical of the Gulf of Nicoya region. Four abundance patterns (a,b,c,d) were found among the top 25 important species: species with peaks of abundance coinciding with the dry (a) or rain y (b) seasons, and species increasing (e) or decreasing (d) in abundance during the sampling period. Multiple discriminant analysis on the environmental variables assigned relatively high scores to the organic matter, silt + clay, and very fine sand contents of the sediments. The abundances of some species showed significant association with one or several of the environmental variables. The importance of these factors in community structure needs further experimental work. Caging experiments (5 mm mesh size cages) resulted in non-significant changes in total abundance and species number inside cages after a period of three months. Cluster analysis, however, revealed differences between caged and uncaged sets of samples. C. pacifica and juveniles of an unidentified bivalve mollusc were more abundant inside cages, and the cumacean was more abundant outside. These results indicate that the role of macropredators (birds, crabs, fish) in community structure might be relatively unimportant. This benthic community is considered as representative of relatively unpolluted conditions since published information on trace metal concentrations and raw sewage discharges indicate that these appear characteristic of nonindustrialized estuaries. The main likely source of pollution (chemical compounds derived from agricultural practices) into the Gulf of Nicoya, however, needs to be quantified." @default.
• W2182809377 created "2016-06-24" @default.
• W2182809377 creator A5052267854 @default.
• W2182809377 date "2016-05-03" @default.
• W2182809377 modified "2023-10-03" @default.
• W2182809377 title "Community structure of macrobenthos and the results of macropredator exclusion on a tropical intertidal mud flat" @default.
• W2182809377 cites W1024932068 @default.
• W2182809377 cites W1969004444 @default.
• W2182809377 cites W1980808852 @default.
• W2182809377 cites W1981917021 @default.
• W2182809377 cites W1986105505 @default.
• W2182809377 cites W1986301937 @default.
• W2182809377 cites W1989586069 @default.
• W2182809377 cites W2020539777 @default.
• W2182809377 cites W2022121916 @default.
• W2182809377 cites W2036673087 @default.
• W2182809377 cites W2041692802 @default.
• W2182809377 cites W2049654180 @default.
• W2182809377 cites W2060378449 @default.
• W2182809377 cites W2063458836 @default.
• W2182809377 cites W2072181503 @default.
• W2182809377 cites W2074656320 @default.
• W2182809377 cites W2081904001 @default.
• W2182809377 cites W2092440828 @default.
• W2182809377 cites W2108973180 @default.
• W2182809377 cites W2186780136 @default.
• W2182809377 cites W2189190128 @default.
• W2182809377 cites W2478165742 @default.
• W2182809377 cites W2509168010 @default.
• W2182809377 cites W3097982831 @default.
• W2182809377 cites W615408771 @default.
• W2182809377 cites W634056548 @default.
• W2182809377 cites W6911881 @default.
• W2182809377 cites W2467633277 @default.
• W2182809377 cites W2496191231 @default.
• W2182809377 doi "https://doi.org/10.15517/rbt.v36i2a.23712" @default.
• W2182809377 hasPublicationYear "2016" @default.
• W2182809377 type Work @default.
• W2182809377 sameAs 2182809377 @default.
• W2182809377 citedByCount "19" @default.
• W2182809377 countsByYear W21828093772012 @default.
• W2182809377 countsByYear W21828093772015 @default.
• W2182809377 countsByYear W21828093772016 @default.
• W2182809377 crossrefType "journal-article" @default.
• W2182809377 hasAuthorship W2182809377A5052267854 @default.
• W2182809377 hasConcept C104317684 @default.
• W2182809377 hasConcept C125471540 @default.
• W2182809377 hasConcept C127937792 @default.
• W2182809377 hasConcept C133079900 @default.
• W2182809377 hasConcept C151730666 @default.
• W2182809377 hasConcept C151913843 @default.
• W2182809377 hasConcept C161222754 @default.
• W2182809377 hasConcept C174580923 @default.
• W2182809377 hasConcept C18903297 @default.
• W2182809377 hasConcept C2778492020 @default.
• W2182809377 hasConcept C2779395763 @default.
• W2182809377 hasConcept C2781123465 @default.
• W2182809377 hasConcept C53565203 @default.
• W2182809377 hasConcept C55493867 @default.
• W2182809377 hasConcept C62648534 @default.
• W2182809377 hasConcept C77077793 @default.
• W2182809377 hasConcept C86803240 @default.
• W2182809377 hasConceptScore W2182809377C104317684 @default.
• W2182809377 hasConceptScore W2182809377C125471540 @default.
• W2182809377 hasConceptScore W2182809377C127937792 @default.
• W2182809377 hasConceptScore W2182809377C133079900 @default.
• W2182809377 hasConceptScore W2182809377C151730666 @default.
• W2182809377 hasConceptScore W2182809377C151913843 @default.
• W2182809377 hasConceptScore W2182809377C161222754 @default.
• W2182809377 hasConceptScore W2182809377C174580923 @default.
• W2182809377 hasConceptScore W2182809377C18903297 @default.
• W2182809377 hasConceptScore W2182809377C2778492020 @default.
• W2182809377 hasConceptScore W2182809377C2779395763 @default.
• W2182809377 hasConceptScore W2182809377C2781123465 @default.
• W2182809377 hasConceptScore W2182809377C53565203 @default.
• W2182809377 hasConceptScore W2182809377C55493867 @default.
• W2182809377 hasConceptScore W2182809377C62648534 @default.
• W2182809377 hasConceptScore W2182809377C77077793 @default.
• W2182809377 hasConceptScore W2182809377C86803240 @default.
• W2182809377 hasLocation W21828093771 @default.
• W2182809377 hasOpenAccess W2182809377 @default.
• W2182809377 hasPrimaryLocation W21828093771 @default.
• W2182809377 hasRelatedWork W109085262 @default.
• W2182809377 hasRelatedWork W2008449853 @default.
• W2182809377 hasRelatedWork W2026966549 @default.
• W2182809377 hasRelatedWork W2032006431 @default.
• W2182809377 hasRelatedWork W2036270700 @default.
• W2182809377 hasRelatedWork W2049654180 @default.
• W2182809377 hasRelatedWork W2055113946 @default.
• W2182809377 hasRelatedWork W2060378449 @default.
• W2182809377 hasRelatedWork W2081904001 @default.
• W2182809377 hasRelatedWork W2084040592 @default.
• W2182809377 hasRelatedWork W2085722564 @default.
• W2182809377 hasRelatedWork W2131004210 @default.
• W2182809377 hasRelatedWork W2182845915 @default.
• W2182809377 hasRelatedWork W2189190128 @default.
• W2182809377 hasRelatedWork W2240324377 @default.
• W2182809377 hasRelatedWork W2474524840 @default.

• next