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Relationships between structural complexity, coral traits, and reef fish assemblages ArchiMer
Darling, Emily S.; Graham, Nicholas A. J.; Januchowski-hartley, Fraser A.; Nash, Kirsty L.; Pratchett, Morgan S.; Wilson, Shaun K..
With the ongoing loss of coral cover and the associated flattening of reef architecture, understanding the links between coral habitat and reef fishes is of critical importance. Here, we investigate whether considering coral traits and functional diversity provides new insights into the relationship between structural complexity and reef fish communities, and whether coral traits and community composition can predict structural complexity. Across 157 sites in Seychelles, Maldives, the Chagos Archipelago, and Australia's Great Barrier Reef, we find that structural complexity and reef zone are the strongest and most consistent predictors of reef fish abundance, biomass, species richness, and trophic structure. However, coral traits, diversity, and life...
Tipo: Text Palavras-chave: Habitat diversity; Species traits; Functional ecology; Reef architecture; Scleractinian corals; Coral reef fish.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00389/49997/74763.pdf
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Let's go beyond taxonomy in diet description: testing a trait-based approach to prey-predator relationships ArchiMer
Spitz, Jerome; Ridoux, Vincent; Brind'Amour, Anik.
1. Understanding ‘Why a prey is a prey for a given predator?’ can be facilitated through trait-based approaches that identify linkages between prey and predator morphological and ecological characteristics and highlight key functions involved in prey selection. 2. Enhanced understanding of the functional relationships between predators and their prey is now essential to go beyond the traditional taxonomic framework of dietary studies and to improve our knowledge of ecosystem functioning for wildlife conservation and management. 3. We test the relevance of a three-matrix approach in foraging ecology among a marine mammal community in the northeast Atlantic to identify the key functional traits shaping prey selection processes regardless of the taxonomy...
Tipo: Text Palavras-chave: Foraging strategy; Fourth-corner method; Functional ecology; Marine mammals; Prey selection; RLQ analysis.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00189/30047/29495.pdf
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Ecological and life history traits explain a climate induced shift in a temperate marine fish community ArchiMer
Mclean, Matthew; Mouillot, David; Auber, Arnaud.
A better understanding of community dynamics and ecosystem functioning can be achieved by describing how community functional structure responds to environmental change over both time and space and by identifying which functional groups best mediate community responses. Here, we used a trait-based approach in combination with a newly developed application of principal response curves to functionally characterize a rapid taxonomic shift in the eastern English Channel fish community in the late 1990s. We identified the functional groups with the greatest contributions to the overall shift in fish functional structure and uncovered significant trait−environment relationships. We found that pelagic species with rapid life history cycles, characterized by...
Tipo: Text Palavras-chave: Atlantic Multidecadal Oscillation; Climate warming; English Channel; Functional ecology; Principal response curves; Response traits.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00467/57882/60366.pdf
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The influence of environmental variables on the functional structure of headwater stream fish assemblages: a study of two tropical basins in Central Brazil Neotropical Ichthyology
Carvalho,Rodrigo Assis; Tejerina-Garro,Francisco Leonardo.
We investigated functional patterns of fish assemblages of two adjacent basins (Araguaia and Tocantins) to test whether their headwater stream fish assemblages are more functionally (dis)similar than expected by chance and whether these (dis)similarities are related to differences of environmental conditions between basins. We used an analysis of similarities (ANOSIM) on a functional dissimilarity matrix to test for (dis)similarities between fish assemblages of both basins. We performed RLQ and fourth-corner analyses to determine fish species trait-environment relationship. Our results revealed functional dissimilarities between fish assemblages of both basins and significant species trait-environment relationships, suggesting that environmental conditions...
Tipo: Info:eu-repo/semantics/article Palavras-chave: ANOSIM; Community ecology; Functional ecology; RLQ analysis; Tocantins-Araguaia river basin.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000200349
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Composition of functional ecological guilds of the fish fauna of the internal sector of the Amazon Estuary, Pará, Brazil Anais da ABC (AABC)
MOURÃO,KEILA R.M.; FERREIRA,VALDIMERE; LUCENA-FRÉDOU,FLÁVIA.
The present study describes the spatial and temporal structure of the estuarine fish community in the internal sector of the Amazon Estuary. Samples were obtained in the main channels and tidal creeks of Guajará and Marajó Bays and Guamá River. A total of 41,516 fish specimens were collected, representing 136 taxa, 38 families and 12 orders. In the dry season, the mean salinity of the main channel increased along a limnic-marine gradient, between the Guamá River and the Marajó Bay. Species richness was lowest in the mouth of the Guamá River and in the right margin of the Guajará Bay. Fish species composition and environmental guilds differed markedly among areas: Migrants and Freshwater Stragglers were dominant in the Guamá River and the Guajará Bay, while...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Estuaries; Fish diversity; Functional ecology; Habitat; Salinity gradients.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401783
Registros recuperados: 5
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