Plum Island Long-Term Ecological Research Site

 

PIE-LTER
Site Resources:

Home

Overview

Data

Personnel

Publications



Tide Creek Fertilization

Increased nutrient input to estuaries from human activities has been a concern to scientists for many years. In addition to stimulating plant and algal growth, nutrient fertilization can alter plant species composition and change the sedimentation and erosion rates that regulate marsh accretion and decomposition. The presence of higher order animals, such as fish, can also affect the balance of marsh accretion and loss by influencing the flow of nutrients within the marsh ecosystem. Through their feeding and behavior, fish can increase or decrease plant and algae production, increase decomposition and move nutrients into or out of the marsh ecosystems through migration.

This study plans to monitor the ecosystem wide effect of two experimental manipulations in four small tidal creeks of the Rowley River over a four year timespan. Nutrients in the form of fertilizer will be added to two creeks and mummichogs, the dominant species of fish, will be removed from small branches of all four creeks. During these manipulations several variables will be measured including: nutrient levels, plant and algal species composition and production, fish and invertebrate species composition and abundance, marsh surface elevation, and the decomposition rate of peat.

For more information see the TIDES Web Page.



LTE-TC-site
Map of the Plum Island Ecosystems Tidal Creek Long-Term Fertilization sites
LTE-TC-NUT
Pre-fertilization water-column nutrient data from the tidal creeks
LTE-TC-BenChl
Pre-fertilization benthic chlorophyll concentration in tidal creeks
LTE-TC-Greenwood Isotopes
Stable isotopes of organisms in Greenwood Creek

Sigma autosampler at Tidal Creek site.
(photo by Bonnie Keeler)

LTE-TIDE-BenChl
Benthic algae chlorophyl measurements along Rowley River tidal creeks associated with long term fertilization experiments.
LTE-TIDE-Geomorphology
Creek morphology in Rowley River tidal creeks associated with long term fertilization experiments, Rowley and Ipswich, MA.
LTE-TIDE-Macroinfauna
Macroinfauna counts from marsh cores along Rowley River tidal creeks associated with long term fertilization experiments.
LTE-TIDE-MelampusIndividBiomass
Melampus bidentatus length and biomass measurements along Rowley River tidal creeks associated with long term fertilization experiments.
LTE-TIDE-NektonFlumeIndividual
Nekton individual data from flume net collections along Rowley River tidal creeks associated with long term fertilization experiments.
LTE-TIDE-NektonFlumeDensity
Nekton species counts and density from flume net collections along Rowley River tidal creeks associated with long term fertilization experiments.
LTE-TIDE-MarshPlantStemCount
Marsh plant species stem counts along Rowley River tidal creeks associated with long term fertilization experiments.
LTE-TIDE-MarshPlantShootStats
Marsh plant species shoot height, weight and diameters along Rowley River tidal creeks associated with long term fertilization experiments.
LTE-TIDE-MarshPlantFreq
Marsh plant species frequency of occurence along Rowley River tidal creeks associated with long term fertilization experiments.
LTE-TIDE-MarshPlantCHN
Marsh plant species stem C:H:N data for Rowley River tidal creeks associated with long term fertilization experiments.
LTE-TIDE-MarshPlantCover
Marsh plant species percent cover along Rowley River tidal creeks associated with long term fertilization experiments.
LTE-TIDE-LENS-2009-geotech
2009 LENS geotechnical core results
LTE-TIDE-LENS-2009-above-bio
2009 LENS aboveground biomass
LTE-TIDE-LENS-2009-below-bio
2009 LENS belowground biomass

 

This material is based upon work supported by the National Science Foundation under Cooperative Agreement #OCE-9726921, #OCE-0423565, #OCE-1058747. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.