Kachemak Bay (KAC) NERR Nutrient Metadata January - December, 2004 Last updated: October 20, 2005Entry ID: CDMO_kacnut01-12.04m
Abstract: Nutrient monitoring is conducted at 26 National Estuarine Research Reserves (NERR) from four locations within or adjacent to the reserve on a monthly basis of the following parameters: orthophosphate, ammonium, nitrite, nitrate, and chlorophyll a. Note: Reserves may collect additional parameters which are available by searching the Yearly Files directory.
Purpose: Research objectives Kachemak Bay (KBRR) is a temperate region fjord with hydrographic conditions unique among the NERR system estuaries. The circulation in the bay is driven primarily by tidal forcing. Regional circulation is characterized by generally cyclonic ocean currents in the Gulf of Alaska flowing onto the shelf off of Cook Inlet. Nutrient rich bottom water is up welled and mixed with ... surface water. These enriched waters stream into Kachemak Bay, the inflow tends to stay along the southern shore while water flowing out of the bay stays along the north shore. These trapped coastal flows separate the bay into two distinct ecosystems. As the inflowing water proceeds up the bay, fresh water runoff from the surrounding ice fields and watersheds dilute the salinity and increase the sediment load. The inflowing water, therefore, initially supports a marine system while the northern out flowing water is more estuarine. The vertical profile is stratified all year with the stratification increasing in strength during the summer. We are monitoring to quantify the variability of the stratification and the along and across axis water quality gradients of the Bay. Monthly Grab Monthly grab samples are collected to quantify the vertical and horizontal spatial variability of important nutrients in the water column at sites representing the marine and estuarine endpoints of the local salinity gradient. Diel Sampling Program Once per month, samples are collected every two hours through a 24-hour tidal cycle to quantify the temporal variability of important nutrients in the water column as a function of tidal forcing.
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Data Set Citation
Dataset Originator/Creator: Scott Pegau, Kathy Krogslund, Joel Cooper
Dataset Title: Kachemak Bay (KAC) NERR Nutrient Metadata January - December, 2004 Last updated: October 20, 2005
Dataset Release Date: 2006-02-23
Data Presentation Form: Unknown
Other Citation Details: NAOnline Resource: http://cdmo.baruch.sc.edu/
This data set description is a member of a collection. The collection is described in
Start Date: 2004-01-01Stop Date: 2004-12-31
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CHLOROPHYLL
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > PHOSPHOROUS COMPOUNDS
OCEANS > COASTAL PROCESSES > ESTUARIES
OCEANS > OCEAN CHEMISTRY > NITRATE
OCEANS > OCEAN CHEMISTRY > NITRITE
OCEANS > OCEAN CHEMISTRY > PHOSPHATE
BIOSPHERE > AQUATIC ECOSYSTEMS > ESTUARINE HABITAT
OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL
Quality Quality of the data varies by project within the database.
Access Constraints Final data is publicly available free of charge.
Use Constraints The Department of Environmental Services is dedicated to making more environmental information more readily available to more people while maintaining user confidence in the information. The information is the best available according to the procedures and standards of each of the contributing programs and of this system. The different programs are regularly maintaining the information in their ... databases, and the system is periodically being modified to respond to user needs. As a result, the system may not always provide access to all existing information, and it may occasionally contain unintentional inaccuracies. The Department has made every effort to present the information in a clear and understandable way for a variety of users. We can not be responsible, however, for the misuse or misinterpretation of the information presented by this system.
Data Set Progress
Distribution Media: Online Internet (HTTP)
Distribution Size: Varies
Distribution Format: Excel
Role: DIF AUTHOR
Role: TECHNICAL CONTACT
Email: emd at des.state.nh.us
29 Hazen Drive PO Box 95
Province or State: NH
Postal Code: 03302-0095
Creation and Review Dates
DIF Creation Date: 2005-11-01
Last DIF Revision Date: 2008-12-16
Future DIF Review Date: 2007-11-01