NYCounterPOPd Web Interactive: Software to investigate the population scale impacts of lead in New York State from 1990-2018

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We assessed the population scale impacts of lead (Pb) toxicosis and lead exposure in Bald Eagles (Haliaeetus leucocephalus) in New York State, USA from 1990-2018. The NYCounterPOPd software uses a population matrix model to compare the real and hypothetical dynamics in the presence and absence of Pb deaths. The work specific to NY was built by adapting the CounterPOPd software (, which utilized a combinatorial optimization algorithm in conjunction with adult time series data of bald eagles in the greater Northeast US. The first building block to CounterPOPd app, the “EaglePOPd” software, assessed the dynamics of the NE eagle population only (, while the second building block to CounterPOPd, the “OptiPOPd” software, was a generalized version the algorithm that is used to backfill a symbolic matrix model using time series data ( The NYCounterPOPd segment of this package tailored the CounterPOPd software to the region of New York.

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This software is shared under a MIT License. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

NOTE: This software and data package is 3.3GB - download time may be long, depending on your internet connection.


This study was funded in part by the Morris Animal Foundation under Grant # D18ZO-103 and in part by the New York State Department of Environmental Conservation. This software has not been reviewed nor endorsed by the Foundation nor the Department, and the views expressed in this software do not necessarily reflect the views of the Foundation nor the Department, its officers, directors, affiliates or agents.

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Lefkovitch matrix; recovery; resource management


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Version History

Now showing 1 - 2 of 2
2022-09-28 17:35:48
Updated scripts and naming changes.
2020-08-14 16:45:58
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