Predicting Morphological Changes in Rivers, Estuaries and Coasts -Executive Summary
Water for Virginia Master Naturalists: Estuaries & Coasts.
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Transcript of Water for Virginia Master Naturalists: Estuaries & Coasts.
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Water for Virginia Master Naturalists:
Estuaries & Coasts
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Chesapeake Bay Watershed
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Types of surface water
Ephemeral streams – vernal poolsPuddlesStreamsPondsLakesRiversEstuariesOceans
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Pollution Sources
Point SourceName some sources
Non-Point SourceName some sources
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Pollution Types
SedimentNutrientsAnimal WastePesticidesSaltsToxicantsThermal
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Pollution Sources
SedimentNutrientsAnimal WastePesticidesSaltsToxicantsThermal
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Nutrients
N-P-KSources?Air is the major source!Sinks
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Which are the Biggies for us?
SedimentNutrientsAnimal WastePesticidesSaltsToxicantsThermal
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Chesapeake Bay PollutantsCHESAPEAKE BAY PROGRAM - ENVIRONMENTAL INDICATORS
TRACK 1: NUTRIENT ENRICHMENT INDICATORCBP 7/22/03
1980s –2002
Decreasing
No significant trend
Increasing
Nitrogen Trends in Rivers Entering the Bay:
Flow Adjusted ConcentrationsMonitoring data from major rivers entering tidal waters of Chesapeake Bay show that nitrogen concentrations are decreasing in the Susquehanna, Potomac, Patuxent, and James rivers.
The Pamunkey (a tributary to the York) shows an increasing trend.
The remaining riversshow no trends.
Source: USGS and Susquehanna River Basin Commission, PA. Results are shown for flow adjusted trend analyses using the earliest complete data set collected since 1985.
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Chesapeake Bay PollutantsCHESAPEAKE BAY PROGRAM - ENVIRONMENTAL INDICATORS
TRACK 1: NUTRIENT ENRICHMENT INDICATORCBP 7/22/03
1980s –2002
Decreasing
No significant trend
Increasing
Monitoring data from major rivers entering tidal waters of Chesapeake Bay show that phosphorus loads are decreasing in portions of the Susquehanna and in the Patuxent, Mattaponi, James and Appomattox rivers.
The remaining rivers and the rest of the Susquehanna show no trends.
Source: USGS and Susquehanna River Basin Commission, PA. Results are shown for trend analyses using the earliest complete data set collected since 1985.
Phosphorus Trends in Rivers Entering the Bay:Monitored Loads
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Types of Toxicity
AcuteCancer Birth DefectsEndocrine DisruptorsChronicBioaccumulationBiomagnification
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Measuring Pollution
Chemistry/Laboratory/BioassayEffects
Global effectsLess fish landings – global warming
Ecological assaysMacroinvertebrate assays - surveys
Secondary effectsLow DO – Cloudy water
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Chesapeake Bay - How’s It Doing
Lets look at some systems indicative of condition:SAV submerged aquatic vegetationStriped BassBlue crabsOysters
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Chesapeake Bay - How’s It
Doing
SAV IS recovering
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Chesapeake Bay -
How’s It Doing
Striped Bass
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Chesapeake Bay - How’s It Doing
Blue Crabs
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Chesapeake Bay - How’s It Doing
Oysters
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Impacts of Pollution
ToxicityFood contaminationHabitat destructionHabitat degradationCascading Effects
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Habitats at risk
Clear water habitatsSAVWetlandsOyster reef
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Water Quality Healthy vs. Unhealthy
Sunlight Sunlight
HealthyHabitat
UnhealthyHabitat
BalancedAlgae Growth
Minimal Nitrogen, Phosphorus and Sediment Inputs
Excessive Nitrogen, Phosphorus and Sediment Inputs
HealthyBay Grasses Reduced
Bay Grasses
Algae Die-off
Algae Decomposition
No Oxygen
Lack of Benthic CommunityBenthic Community
HealthyOyster Reef
AdequateOxygen
Algal Bloom
Barren Oyster Reef
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What is an Estuary?
???
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What is an Estuary?
Where salt water blends with freshWhere the river meets the sea?
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What is an Estuary? the wide part of a river where it nears the sea; fresh and salt water mix wordnet.princeton.edu/perl/webwn
An estuary is a semi-enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries are often associated with high rates of biological productivity. en.wikipedia.org/wiki/Estuary
The thin zone along a coastline where freshwater systems and rivers meet and mix with a salty ocean (such as a bay, mouth of a river, salt marsh, lagoon). www.srh.noaa.gov/jetstream/append/glossary_e.htm
A semi-enclosed body of water which has a free connection to the open sea and within which seawater is measurably diluted by fresh water derived from land drainage. www.estuaries.gov/glossary.html
An inlet or arm of the sea, especially the wide mouth of a river, where the tide meets the current. www.floridadep.net/evergladesforever/about/glossary.htm
A semi-enclosed coastal body of water which has a free connection with the open sea and where fresh water derived from land drainage (usually mouths of rivers) is mixed with seawater; often subject to tidal action and cyclic fluctuations in salinity. biology.usgs.gov/s+t/SNT/noframe/zy198.htm
the part of the wide lower course of a river where it is met by the sea www.unep.or.jp/ietc/publications/short_series/lakereservoirs-2/glossary.asp
an environment where terrestrial, freshwater, and seawater (saline) habitats overlap www.nwrc.usgs.gov/fringe/glossary.html
A complex ecosystem between a river and near-shore ocean waters where fresh and salt water mix. These brackish areas include bays, mouths of rivers, salt marshes, wetlands, and lagoons and are influenced by tides and currents. ... www.nsc.org/EHC/glossary.htm
a place where fresh and salt water mix, such as a bay, salt marsh, or where a river enters an ocean. mvhs1.mbhs.edu/riverweb/glossary.html
The broad lower course of a river that is encroached on by the sea and affected by the tides. usinfo.state.gov/products/pubs/geography/glossary.htm
Semi-enclosed coastal waters at the junctions of rivers with ocean habitats, for example littoral basins, bays, inlets and harbours. Estuaries have a high biological productivity due to nutrient delivery and mixing processes. ... www.eubios.info/biodict.htm
A place where freshwater and salt water meet (ie where a river meets the ocean or the Gulf of Mexico). sofia.usgs.gov/virtual_tour/glossary.html
A coastal body of water that connects to the oceans so that fresh water from a river mixes with saltwater from the oceans, such as in the Chesapeake Bay. mdk12.org/instruction/curriculum/science/glossary.shtml
the part of a river where fresh water meets the sea and is affected by tides activities.macmillanmh.com/science/ca/grade6/glossary/e.html
An estuary is where a river meets the sea. EUPHAUSIID Euphausiids are small, plentiful, shrimp-like, crustaceans that live in the open ocean. They are about 1 inch (2.5 cm) long. www.enchantedlearning.com/subjects/sharks/glossary/indexe.shtml
a water passage where the tide meets a river current, especially at the lower end of a river www.yukonriverpanel.com/glossary.htm
The area where fresh and salt water mix at the mouth of a river, used as rearing and feeding habitat by many fish species and other animals. www.governor.wa.gov/gsro/glossary/default.asp
Mouth of a river where its fresh water mixes with salt water and is affected by tides. www.fish.state.pa.us/pafish/fishhtms/glossar.htm
Mouth of a river, where fresh river water mixes with the seawater. www.newforest.gov.uk/index.cfm
the area where a river empties into an ocean; a bay, influenced by the ocean tides, resulting in a mixture of salt water and fresh water. www.wef.org/LearnAboutWater/ForThePublic/WaterTerms/
A bay that formed when a broad river valley was submerged by rising sea level or a sinking coast. eobglossary.gsfc.nasa.gov/Library/glossary.php3
a bay or inlet, often at the mouth of a river, in which large quantities of freshwater and seawater mix together. These unique habitats are necessary nursery grounds for many marine fishes and shellfishes. www.nrdc.org/reference/glossary/e.asp
where river currents meet and are influenced by oceanic tides montereybay.noaa.gov/educate/teachercurriculum/glossary.html
1. The portion of a river that is affected by tides. 2. A semi-enclosed body of water where the salinity of ocean water is measurably reduced by freshwater input. Estuaries are very important nursery regions for many coastal ocean species of fish and invertebrates. amsglossary.allenpress.com/glossary/browse
An arm of the sea at the mouth of a river. www.kgs.ku.edu/Publications/ancient/vocab.html
A place where fresh (non-salty) water enters the sea, such as at a river mouth. sciencebulletins.amnh.org/bio/f/sprawl.20050201/glossary/index.php
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What is an Estuary?
the wide part of a river where it nears the sea; fresh and salt water mix
An estuary is a semi-enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries are often associated with high rates of biological productivity.
A semi-enclosed body of water which has a free connection to the open sea and within which seawater is measurably diluted by fresh water derived from land drainage
A semi-enclosed coastal body of water which has a free connection with the open sea and where fresh water derived from land drainage (usually mouths of rivers) is mixed with seawater; often subject to tidal action and cyclic fluctuations in salinity.
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What is an Estuary?Old Woman Creek Reserve, Ohio
•First NERR – 1980
•Smallest – 571 A
•No salt water
•Tides?
•So what dies it have in common with the Chesapeake?
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What is an Estuary?
the wide part of a river where it nears the sea; fresh and salt water mix
An estuary is a semi-enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries are often associated with high rates of biological productivity.
A semi-enclosed body of water which has a free connection to the open sea and within which seawater is measurably diluted by fresh water derived from land drainage
A semi-enclosed coastal body of water which has a free connection with the open sea and where fresh water derived from land drainage (usually mouths of rivers) is mixed with seawater; often subject to tidal action and cyclic fluctuations in salinity.
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Chesapeake Bay
Largest in USMaybe largest in the
world
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Tides
Spring Tide
Neap Tide
Daily cycle
High and low tide
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Lunar Tidal Day
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Tides So What?
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Tidal Action
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Tides So What?
Intertidal zone
Tidal flatsTidal
wetlands
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Intertidal Zone - Vertical
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Zonation
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Tidal Marsh – Sea Level Rise
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Intertidal Zone Horizontal
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Salt Water
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Shoals
•Point No Point Light 6 miles north of Mouth of Potomac
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Depths
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Benthos/ Soft Bottoms
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Eel Grass Beds
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Shell Fish Beds
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Oysters
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More Oysters
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Oyster Reef
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Fisheries
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You can’t eat ‘em all
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Other Important Bay Denizens
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Blue Crabs – Callinectes sapidus
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Waves – the BeachWaves
“break” at 1/7th Lambda
Build or erode beaches
“decide” what is on the beach
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The Beach
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Barrier Island Ecology
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Dune Change Shape
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The Dune
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Inter Dunes
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