Denitrification and Nitrogen Fixation Dynamics in the Area Surrounding an Individual Ghost Shrimp (Neotrypaea californiensis) Burrow System

被引:23
作者
Bertics, Victoria J.
Sohm, Jill A.
Magnabosco, Cara
Ziebis, Wiebke [1 ]
机构
[1] Univ So Calif, Dept Biol Sci, Los Angeles, CA 90089 USA
关键词
SULFATE REDUCTION; MARINE SEDIMENT; BIOTURBATION; RATES; NITRIFICATION; MICRONICHES; ESTUARINE; SULFIDE; INHIBITION; ACETYLENE;
D O I
10.1128/AEM.00114-12
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Bioturbated sediments are thought of as areas of increased denitrification or fixed-nitrogen (N) loss; however, recent studies have suggested that not all N may be lost from these environments, with some N returning to the system via microbial dinitrogen (N-2) fixation. We investigated denitrification and N-2 fixation in an intertidal lagoon (Catalina Harbor, CA), an environment characterized by bioturbation by thalassinidean shrimp (Neotrypaea californiensis). Field studies were combined with detailed measurements of denitrification and N-2 fixation surrounding a single ghost shrimp burrow system in a narrow aquarium (15 cm by 20 cm by 5 cm). Simultaneous measurements of both activities were performed on samples taken within a 1.5-cm grid for a two-dimensional illustration of their intensity and distribution. These findings were then compared with rate measurements performed on bulk environmental sediment samples collected from the lagoon. Results for the aquarium indicated that both denitrification and N-2 fixation have a patchy distribution surrounding the burrow, with no clear correlation to each other, sediment depth, or distance from the burrow. Field denitrification rates were, on average, lower in a bioturbated region than in a seemingly nonbioturbated region; however, replicates showed very high variability. A comparison of denitrification field results with previously reported N-2 fixation rates from the same lagoon showed that in the nonbioturbated region, depth-integrated (10 cm) denitrification rates were higher than integrated N2 fixation rates (similar to 9 to 50 times). In contrast, in the bioturbated sediments, depending on the year and bioturbation intensity, some (similar to 6.2%) to all of the N lost via denitrification might be accounted for via N-2 fixation.
引用
收藏
页码:3864 / 3872
页数:9
相关论文
共 86 条
[1]   EVIDENCE FOR LOCALIZED ENHANCEMENT OF BIOLOGICAL-ACTIVITY ASSOCIATED WITH TUBE AND BURROW STRUCTURES IN DEEP-SEA SEDIMENTS AT THE HEBBLE SITE, WESTERN NORTH-ATLANTIC [J].
ALLER, JY ;
ALLER, RC .
DEEP-SEA RESEARCH PART A-OCEANOGRAPHIC RESEARCH PAPERS, 1986, 33 (06) :755-790
[2]   BIOTURBATION AND REMINERALIZATION OF SEDIMENTARY ORGANIC-MATTER - EFFECTS OF REDOX OSCILLATION [J].
ALLER, RC .
CHEMICAL GEOLOGY, 1994, 114 (3-4) :331-345
[3]  
Berner R.A., 1980, EARLY DIAGENESIS
[4]   Bioturbation and the role of microniches for sulfate reduction in coastal marine sediments [J].
Bertics, Victoria J. ;
Ziebis, Wiebke .
ENVIRONMENTAL MICROBIOLOGY, 2010, 12 (11) :3022-3034
[5]   Burrowing deeper into benthic nitrogen cycling: the impact of bioturbation on nitrogen fixation coupled to sulfate reduction [J].
Bertics, Victoria J. ;
Sohm, Jill A. ;
Treude, Tina ;
Chow, Cheryl-Emiliane T. ;
Capone, Douglas G. ;
Fuhrman, Jed A. ;
Ziebis, Wiebke .
MARINE ECOLOGY PROGRESS SERIES, 2010, 409 :1-15
[6]   Biodiversity of benthic microbial communities in bioturbated coastal sediments is controlled by geochemical microniches [J].
Bertics, Victoria J. ;
Ziebis, Wiebke .
ISME JOURNAL, 2009, 3 (11) :1269-1285
[7]   DENITRIFICATION, DISSIMILATORY REDUCTION OF NITRATE TO AMMONIUM, AND NITRIFICATION IN A BIOTURBATED ESTUARINE SEDIMENT AS MEASURED WITH N-15 AND MICROSENSOR TECHNIQUES [J].
BINNERUP, SJ ;
JENSEN, K ;
REVSBECH, NP ;
JENSEN, MH ;
SORENSEN, J .
APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 1992, 58 (01) :303-313
[8]  
Bishop GA, 2005, P BIOL SOC WASH, V118, P218, DOI 10.2988/0006-324X(2005)118[218:TAPOBT]2.0.CO
[9]  
2
[10]   NITROGEN CYCLING IN DIFFERENT TYPES OF SEDIMENTS FROM DANISH WATERS [J].
BLACKBURN, TH ;
HENRIKSEN, K .
LIMNOLOGY AND OCEANOGRAPHY, 1983, 28 (03) :477-493