Is the Hudson a River or an Estuary – An Introduction
A Day in the Life of the Hudson and Harbor ‘Investigation’
We all have a ‘Water Address’! �What is yours?
NASA
Here is a watershed map of the U.S.
Can you tell us what a watershed is?
Here is our watershed
What is your ‘Water Address’?
Hudson River Watershed:
Is the Hudson a River or an Estuary?
Some call the Hudson a River while others call the Hudson an Estuary… Which is it?
STOP in your packets
develop a model for each!
Develop your model of what are the critical pieces that define a river and define an estuary?
Image Source: San Diego County Office of Education
Hudson Geography
Some call the Hudson a River while others call the Hudson an Estuary… We are going to begin an investigation to decide!
What defines a River?
What defines an Estuary?
Albany
Poughkeepsie
New York
Albany
Poughkeepsie
New York
Estuary VS. River Principles & Concepts
ESTUARIES | RIVERS |
Connect directly to the ocean so water is both salty & fresh | A large body of fresh flowing water |
Flow two ways due to tides | Flow one way –from higher to lower elevation |
Depth determined by tides | Depth determined by flow |
Ocean connection makes them very dynamic | Generally consistent water conditions |
Highly complex with varied habitats | Less complex with fewer habitats |
Species include freshwater, saltwater & estuarine (brackish) | Species are freshwater |
People rely on them for the many things they provide | People rely on them for the many things they provide |
This is a view of our area
Let’s Lay the Groundwork for Investigation #1 by checking in with some Hudson residents!
Tools for
investigation #1
How will we know what we catch?
We can use a
DICHOTOMOUS KEY
Based on a series of questions…
is it A or B
Tool # 2
Let’s try it out together…here is our fish
First let’s describe our fish and then check out the fish key
This is the end of Lesson 1 and we are prepared for the investigation #1��Be sure to check out investigations #2 and #3 after that!�www.ldeo.columbia.edu/dayinthelife/