نتایج جستجو برای: benthic community structure

تعداد نتایج: 1903817  

2018
Alison M Flanagan Roger D Flood Michael G Frisk Corey D Garza Glenn R Lopez Nicole P Maher Robert M Cerrato

This study addresses the impact of spatial scale on explaining variance in benthic communities. In particular, the analysis estimated the fraction of community variation that occurred at a spatial scale smaller than the sampling interval (i.e., the geographic distance between samples). This estimate is important because it sets a limit on the amount of community variation that can be explained ...

2007
Nicholas A. Johnson Janet W. Campbell Timothy S. Moore Michael A. Rex Ron J. Etter Craig R. McClain Mark D. Dowell

The relationship between surface production and benthic standing stock is fundamental to understanding biogeography in the deep sea. While much has been learned about the complex oceanographic processes involved in energy transfer to the benthos on local scales, the correspondence of overhead production to benthic community structure on regional scales remains poorly characterized. We compiled ...

Journal: :Environmental monitoring and assessment 2007
K A Jayaraj K V Jayalakshmi K Saraladevi

The paper deals with the standing stock of macrobenthic infauna and associated environmental factors influencing the benthic community in the shelf region of the northwest Indian coast. The data were collected onboard FORV Sagar Sampada during the winter monsoon (January-February, 2003) to understand the community structure and the factors influencing the benthic distribution. The environmental...

2005
ANNA R. ARMITAGE THOMAS A. FRANKOVICH KENNETH L. HECK JAMES W. FOURQUREAN

We examined the spatial extent of nitrogen (N) and phosphorus (P) limitation of each of the major benthic primary producer groups in Florida Bay (seagrass, epiphytes, macroalgae, and benthic microalgae) and characterized the shifts in primary producer community composition following nutrient enrichment. We established 24 permanent 0.25m2 study plots at each of six sites across Florida Bay and a...

2006
Kim N. Mouritsen Robert Poulin

The New Zealand cockle Austrovenus stutchburyi is often found stranded on the sediment surface due to infections by echinostome trematodes. High densities of heavily-infected cockles on the sediment surface a¡ect near-seabed hydrodynamics and sedimentation and, in turn, benthic animal community structure and diversity. In a six-month ¢eld experiment on an intertidal sand£at we manipulated the d...

Journal: :Proceedings. Biological sciences 2014
Jordan M Casey Tracy D Ainsworth J Howard Choat Sean R Connolly

Microbial community structure on coral reefs is strongly influenced by coral-algae interactions; however, the extent to which this influence is mediated by fishes is unknown. By excluding fleshy macroalgae, cultivating palatable filamentous algae and engaging in frequent aggression to protect resources, territorial damselfish (f. Pomacentridae), such as Stegastes, mediate macro-benthic dynamics...

2005
P. R. HENRIQUES

The effects of pollution (nutrient enrichment). and the presence of macrovegetation on the species diversity and density of large benthic fauna in the Manukau Harbour, Auckland, were studied by sampling eight soft shore, intertidal habitats. Pollution was found to reduce faunal density but to have only a slight effect on species diversity. The presence of dense meadows of the intertidal seaweed...

2013
Vianney Denis Takuma Mezaki Kouki Tanaka Chao-Yang Kuo Stéphane De Palmas Shashank Keshavmurthy Chaolun Allen Chen

BACKGROUND Seawater temperature is the main factor restricting shallow-water zooxanthellate coral reefs to low latitudes. As temperatures increase, coral species and perhaps reefs may move into higher-latitude waters, increasing the chances of coral reef ecosystems surviving despite global warming. However, there is a growing need to understand the structure of these high-latitude coral communi...

2009
Kim N. Mouritsen Robert Poulin

The burrowing and movement ability of the New Zealand cockle Austrovenus stutchburyi is reduced when infected by echinostome trematodes. Previous experimental evidence from a single site suggests that this parasite-induced behavioural change of a key bivalve can affect the structure of the surrounding benthic community. By using multiple regression analyses on data collected from 17 intertidal ...

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