The fauna associated with outer shelf and upper slope sponges (Porifera, Demospongiae) at the Faroe Islands, northeastern Atlantic

Klitgaard, Anne B.

doi:10.1080/00364827.1995.10413574

Cited by 142 publications

(145 citation statements)

References 61 publications

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“…In deeper areas in the Barents Sea, with relative warm, saline waters, the large-bodied Geodia barretti and G. macandrewii are forming dense populations referred to as ''sponge ground''. The fauna associated with sponge grounds is estimated to be at least twice as rich as that of the surrounding gravel or soft bottoms (Bett and Rice 1992;Klitgaard 1995) and sponge grounds may therefore have functions similar to those of coral reefs. Fish species such as Sebastes spp.…”

Section: Spatial Variation In Fish and Benthos Interactionsmentioning

confidence: 99%

Large-scale patterns in community structure of benthos and fish in the Barents Sea

et al. 2016

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Biogeographical patterns have an ecological basis, but few empirical studies possess the necessary scale and resolution relevant for investigation. The Barents Sea shelf provides an ideal study area, as it is a transition area between Atlantic and Arctic regions, and is sampled by a comprehensive survey of all major functional groups. We studied spatial variation in species composition of demersal fish and benthos to elucidate how fish and benthos communities co-varied in relation to environmental variables. We applied co-correspondence analysis on presence-absence data of 64 fishes and 302 benthos taxa from 329 bottom trawl hauls taken at the Barents Sea ecosystem survey in August-September 2011. We found highly significant similarities in the spatial pattern of distribution of benthos and fishes, despite their differences in motility and other ecological traits. The first common ordination axis separated boreal species in the south-west (Atlantic temperate water) from Arctic species in the north-east (Arctic cold water, ice-covered in winter). The second common axis separated shallow bank species from species found in deep basins and trenches. Our results show that fish and benthos communities had a similar relationship to the environmental gradients at the scale of hundreds to thousands of kilometres. We further discussed how fish-benthos interactions vary between sub-regions in the Barents Sea based on species traits and a food web topology for the Barents Sea. This study forms a basis for further investigations on links between fish and benthos communities in the Barents Sea.

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Section: Spatial Variation In Fish and Benthos Interactionsmentioning

confidence: 99%

Large-scale patterns in community structure of benthos and fish in the Barents Sea

et al. 2016

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“…Although application of spatial metrics in deeper marine ecosystems had been limited owing to difficulties associated with underwater mapping, it was successful in explaining fine-scale (<1 m) benthic species assemblages in the Antarctic (Teixidó et al 2002, Teixidó et al 2007). In deeper sites, the landscape is often characterized by sediment type, and not by vegetation or biogenic structures (with the exception of cold-water corals, carbonate mounds and sponge aggregations (Klitgaard 1995, Howell et al 2011, resulting in more subtle changes in seafloor structure which makes it inherently difficult to delineate benthic habitats (Zajac 2008). However, recent studies in automated seabed classification based on sidescan or multibeam sonar backscatter have greatly facilitated the creation of high resolution sediment interpretation maps (Wilson et al 2007, Lucieer 2008, Brown et al 2012.…”

Section: Introductionmentioning

confidence: 99%

Megafaunal distribution and biodiversity in a heterogeneous landscape: the iceberg-scoured Rockall Bank, NE Atlantic

Robert

Jones²,

Huvenne³

2014

Mar. Ecol. Prog. Ser.

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Species distributions are influenced by spatial structure in environmental factors, but the scales at which these dependencies occur and the effect of habitat patch diversity, connectivity and spatial arrangement have rarely been investigated in deep-sea settings. In this study, spatially limited photographic transects collected from Rockall Bank, NE Atlantic, were combined with sidescan and multibeam sonar maps to model spatial patterns in species distribution and biodiversity. Sediment interpretation maps were created and canonical ordination techniques were used to examine relationships between fine-scale sediment characteristics extracted from the digital stills as well as landscape metrics describing the patch mosaic structure of the surrounding areas. Fine-scale sediment characteristics explained 45.1 and 63.8% of the variation in species composition and biodiversity, respectively. This survey effectively captured variation in species distribution resulting from iceberg ploughmarks, occurring at a scale of < 50 m -which would normally go undetected by traditional ship-based studies. Our study suggests that fine-scale environmental information is required to capture the spatial heterogeneity of complex seafloor areas in sufficient detail to model species distributions and biodiversity.

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“…Despite the presence of potentially toxic allelochemicals in many sponges (Bakus et al 1986, Kubanek et al 2002, there is usually a diverse community of invertebrates living in association with sponges (see Klitgaard 1995, Ribeiro et al 2003, and references therein). Some of these animals attach to the surface of the sponges, but many more are found living inside the canals and spaces within the sponge and can be thought of as endofauna (Saffo 1992).…”

Section: Introductionmentioning

confidence: 99%

“…Some of these animals attach to the surface of the sponges, but many more are found living inside the canals and spaces within the sponge and can be thought of as endofauna (Saffo 1992). Previous studies have related the composition of this endofaunal community to the availability of space within the sponge (Pearse 1950, Villamizar & Laughlin 1991, variation in the morphology of the sponge (Koukouras et al 1992, Klitgaard 1995 and local environmental conditions such as depth and habitat of collection (Pearse 1950, Peattie & Hoare 1981, Westinga & Hoetjes 1981, Ribeiro et al 2003. The potential effects of the chemical composition of different sponges on their endofaunal community have also been noted (Villamizar & Laughlin 1991).…”

Section: Introductionmentioning

confidence: 99%

Living in a potentially toxic environment: comparisons of endofauna in two congeneric sponges from the Great Barrier Reef

Skilleter¹,

Russell²,

Degnan³

et al. 2005

Mar. Ecol. Prog. Ser.

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The abundance and community composition of the endofauna in 2 species of sponge, Haliclona sp. 1 and Haliclona sp. 2 (phylum Porifera: order Haplosclerida), were examined at different sites on the slope at Heron Island Reef, in the southern Great Barrier Reef, on 2 separate occasions. Both species of Haliclona occupy similar habitats on the reef slope and are often found living adjacent to each other, but the major groups of secondary metabolites and the gross external morphology in the 2 species of sponge are different. The 2 species of sponge supported significantly different endofaunal communities, with Haliclona sp. 2 supporting 3 to 4 times more individuals than Haliclona sp. 1. Fewer demersal zooplankton (copepods), nematodes and some peracarid crustaceans were found in Haliclona sp. 1 compared with Haliclona sp. 2. There were also differences in the numbers of spionid, nereidid and syllid polychaetes living in the 2 species of sponge. The only taxon that was more abundant in Haliclona sp. 1 than Haliclona sp. 2 was the spionid Polydorella prolifera, and this difference was only evident on 1 of the 2 occasions. The amount of free space (pores, channels, cavities) for a given weight of sponge was only 19% greater in Haliclona sp. 2 than in Haliclona sp. 1, suggesting other factors, such as the differences in the allelochemicals, may have a role in determining the numbers and types of animals living in these 2 species of sponge.

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The fauna associated with outer shelf and upper slope sponges (Porifera, Demospongiae) at the Faroe Islands, northeastern Atlantic

Cited by 142 publications

References 61 publications

Large-scale patterns in community structure of benthos and fish in the Barents Sea

Large-scale patterns in community structure of benthos and fish in the Barents Sea

Megafaunal distribution and biodiversity in a heterogeneous landscape: the iceberg-scoured Rockall Bank, NE Atlantic

Living in a potentially toxic environment: comparisons of endofauna in two congeneric sponges from the Great Barrier Reef

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