Physical and chemical factors influencing species distributions on hydrothermal sulfide edifices of the Juan de Fuca Ridge, northeast Pacific
|Author(s)||Sarrazin Jozee1, Juniper Sk2, Massoth G3, Legendre P4|
|Affiliation(s)||1 : Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
2 : Univ Quebec, Montreal, PQ H3C 3P8, Canada.
3 : NOAA, Pacific Marine Environm Lab, Seattle, WA 98115 USA.
4 : Univ Montreal, Dept Biol Sci, Montreal, PQ H3C 3J7, Canada.
|Source||Marine Ecology Progress Series (0171-8630) (Inter-research), 1999 , Vol. 190 , P. 89-112|
|WOS© Times Cited||109|
|Keyword(s)||hydrothermal vent ecology, physical and chemical factors, in situ measurements, habitat characterization, species distribution, sulfide edifice, statistical analyses, fluid flow, substratum types, mosaic habitat|
|Abstract||This study examines relationships between hydrothermal vent species and their surrounding physical and chemical environment on 2 high-temperature sulfide edifices of the Juan de Fuca Ridge (northeast Pacific). Video imagery and in situ temperature and chemical information were acquired during 2 remotely operated vehicle (ROV) dive programs in 1993 and 1995, for a total of 78 scans. Statistical analyses of environmental and faunal data reveal a heterogeneous distribution (cor respondence analyses) of hydrothermal species and demonstrate a significant influence of local physical and chemical conditions on species distributions (canonical correspondence analyses). Results confirm the importance of hydrogen sulfide to the distribution of vent species as well as the importance of complex variables such as visible flow intensity and substratum type. Since less than 30% of the variance in species distribution could be explained by the measured in situ factors, we conclude by stressing the need to evaluate effects of other unmeasured environmental factors such as dissolved oxygen, nitrogen compounds, food availability and biological interactions.|