JCNERR

AcronymDefinition
JCNERRJacques Cousteau National Estuarine Research Reserve
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References in periodicals archive ?
The JCNERR currently monitors physical-chemical variables at five sites using YSI 6-series data loggers (Figure 3).
(2001) analyzed water quality data collected at 44 NERRS sampling sites nationwide, including those of the JCNERR. This analysis covered the data years between 1996 and 1998.
Focusing on two sampling sites in the JCNERR system (i.e., Lower Bank and Buoy 126), Wenner et al.
During the 1996-1998 period, hypoxia (DO [less than or equal to] 2 mg/l) was observed at all estuarine reserves in the Mid-Atlantic region except the JCNERR. Dissolved oxygen at Lower Bank typically ranged from 85-105% saturation year-round.
JCNERR has compiled summary statistics for environmental variables monitored at the three SWMP sites (i.e., Buoy 126, Chestnut Neck, and Lower Bank) for data years 1999 and 2000 (covering the period from December 1998 to November 2000).
Tables 2 and 3 summarize results of ANOVAs for environmental variables monitored at the three JCNERR SWMP sites.
SWMP sites in the JCNERR system experience semidiurnal tides, and hence salinities vary appreciably in response to tidal cycles during a 24 hour period.
Oxygen deficiency was never observed at the JCNERR during the monitoring period from August 1996 to December 2000.
Absolute values of dissolved oxygen (mg/l) were relatively high in the JCNERR, with mean annual dissolved oxygen levels exceeding 8.5 mg/l at the three SWMP sites.
In the JCNERR, higher temperatures and greater loading of organic matter during summer depress dissolved oxygen levels due to accelerated microbial respiration associated with organic degradation processes.
Although hypoxia has not been observed in the JCNERR, episodes of supersaturation may be a cause of concern.
Analysis of data from the JCNERR SWMP indicates that this reserve has not experienced the dissolved oxygen problems of many other estuarine systems in the U.S.