Presentation is loading. Please wait.

Presentation is loading. Please wait.

Freshwater flows to bays and estuaries Paul Montagna George Ward University of Texas at Austin.

Published byMarylou James Modified over 8 years ago

Similar presentations

Presentation on theme: "Freshwater flows to bays and estuaries Paul Montagna George Ward University of Texas at Austin."— Presentation transcript:

1 Freshwater flows to bays and estuaries Paul Montagna George Ward University of Texas at Austin

2 PROBLEMS SCIENTIFIC: POLICY: REGULATORY: WHAT IS THE RELATION BETWEEN INFLOW AND THE ESTUARY ECOSYSTEM? WHAT ARE THE SOCIETAL TRADE-OFFS BETWEEN POPULATION GROWTH AND ECOSYSTEM MAINTENANCE? HOW DO WE IMPLEMENT THE AGREED POLICY AND ENSURE THAT IT WORKS?

3 SCIENCE POLICY REGULATORY E = f(Q) Q(s,t) monitor

4 HYDRODYNAMIC TRANSPORT (currents, mixing, water depths) WATERBORNE CONSTITUENTS BIOLOGICAL COMMUNITIES (water quality) (distribution & abundance of organisms) CAUSEEFFECT

5 HYDRODYNAMIC TRANSPORT (currents, mixing, water depths) WATERBORNE CONSTITUENTS BIOLOGICAL COMMUNITIES (water quality) (distribution & abundance of organisms) WARDMONTAGNA

6 OCEAN RIVER ESTUARY BOUNDARY ZONE

7 ESTUARIES transitional systems, between freshwater and marine hydrography and chemistry governed by both terrestrial and marine controls terrestrial controls: freshwater influxes, flooding & inundation, runoff and inflow loads (sediment, nutrients, pollutants), and atmospheric deposition marine controls: tides, waves, non-astronomical sea-level variations, marine storms, salinity, and littoral sediment influx predominance of these factors depends upon position in estuary: pronounced environmental gradients extreme time variability in estuary

8 Sabine Lake Galveston Bay Matagorda Bay San Antonio Bay Aransas-Copano Bays Corpus Christi Bay Upper Laguna Madre- Baffin Bay Lower Laguna Madre

9 HYDRODYNAMIC TRANSPORT WATERBORNE CONSTITUENTS BIOLOGICAL COMMUNITIES WATERBORNE CONSTITUENTS HYDRODYNAMIC TRANSPORT CURRENTS DENSITY MIXING SOLIDS NUTRIENTS SALINITY OTHERS FLORA HERBIVORES CARNIVORES

10 HYDRODYNAMIC TRANSPORT WATERBORNE CONSTITUENTS BIOLOGICAL COMMUNITIES WATERBORNE CONSTITUENTS HYDRODYNAMIC TRANSPORT CURRENTS DENSITY MIXING SOLIDS NUTRIENTS SALINITY OTHERS FLORA HERBIVORES CARNIVORES INTERNAL VARIABLES EXTERNAL VARIABLESEXTERNAL (FORCING) VARIABLES

11 HYDRODYNAMIC TRANSPORT WATERBORNE CONSTITUENTS BIOLOGICAL COMMUNITIES WATERBORNE CONSTITUENTS HYDRODYNAMIC TRANSPORT CURRENTS DENSITY MIXING SOLIDS NUTRIENTS SALINITY OTHERS FLORA HERBIVORES CARNIVORES OCEAN SALINITY INFLOW TIDES METEOROLOGY LOADS INSOLATION MIGRATION

12 1 - Model cause-and-effect linkages SCIENTIFIC STRATEGIES

13 1 - Model cause-and-effect linkages 2 - Relate variables statistically

14 SCIENTIFIC STRATEGIES 1 - Model cause-and-effect linkages 2 - Relate variables statistically

15 HYDRODYNAMIC TRANSPORT WATERBORNE CONSTITUENTS BIOLOGICAL COMMUNITIES WATERBORNE CONSTITUENTS HYDRODYNAMIC TRANSPORT CURRENTS DENSITY MIXING SOLIDS NUTRIENTS SALINITY OTHERS FLORA HERBIVORES CARNIVORES OCEAN SALINITY INFLOW TIDES METEOROLOGY LOADS INSOLATION MIGRATION

16 HYDRODYNAMIC TRANSPORT WATERBORNE CONSTITUENTS BIOLOGICAL COMMUNITIES WATERBORNE CONSTITUENTS HYDRODYNAMIC TRANSPORT CURRENTS DENSITY MIXING SOLIDS NUTRIENTS SALINITY OTHERS FLORA HERBIVORES CARNIVORES OCEAN SALINITY INFLOW TIDES METEOROLOGY LOADS INSOLATION MIGRATION

17 HYDRODYNAMIC TRANSPORT WATERBORNE CONSTITUENTS BIOLOGICAL COMMUNITIES WATERBORNE CONSTITUENTS HYDRODYNAMIC TRANSPORT CURRENTS DENSITY MIXING SOLIDS NUTRIENTS SALINITY OTHERS FLORA HERBIVORES CARNIVORES OCEAN SALINITY INFLOW TIDES METEOROLOGY LOADS INSOLATION MIGRATION 1 - Model cause-and-effect linkages

18 HYDRODYNAMIC TRANSPORT WATERBORNE CONSTITUENTS BIOLOGICAL COMMUNITIES WATERBORNE CONSTITUENTS HYDRODYNAMIC TRANSPORT CURRENTS DENSITY MIXING SOLIDS NUTRIENTS SALINITY OTHERS FLORA HERBIVORES CARNIVORES OCEAN SALINITY INFLOW TIDES METEOROLOGY LOADS INSOLATION MIGRATION 2 - Relate variables statistically

19 Any assumed functional variation of a model represents a source of error. Any external variable not explicitly modeled represents a source of variance. TWO PRECEPTS

20 Hydrology of Texas estuaries

21 TWO (2) FACTS ABOUT TEXAS RAINFALL PRODUCED ALMOST ENTIRELY FROM DEEP CONVECTION DECLINES PRECIPITOUSLY FROM EAST TO WEST

22 Isohyets in inches/year

23 TWO (2) FACTS ABOUT TEXAS RUNOFF SMALL AS A PROPORTION OF RAINFALL DECLINES EVEN MORE PRECIPITOUSLY FROM EAST TO WEST

24 RUNOFF / RAINFALL

25

26 TWO (2) FACTS ABOUT TEXAS STREAM FLOW FLASHY SUBSTANTIAL YEAR-TO-YEAR (& LONG-TERM) VARIABILITY

27 Guadalupe River at Victoria daily flow 30-day sliding mean

28 2.73.98.914.3 years

29 Mid-Galveston Bay salinity versus Trinity River flow

30

31

32 Freshwater flows to bays and estuaries Paul Montagna George Ward University of Texas at Austin

Download ppt "Freshwater flows to bays and estuaries Paul Montagna George Ward University of Texas at Austin."

Similar presentations

Chapter 50: An Introduction to Ecology & Biosphere

Chapter 50: An Introduction to Ecology & Biosphere
What’s an Estuary?.

What’s an Estuary?.
Oceans.

Oceans.
Estuaries. What is an Estuary?  Location where ocean meets a river, either the ocean enters the river, or at a wide river mouth fresh water enters the.

Estuaries. What is an Estuary?  Location where ocean meets a river, either the ocean enters the river, or at a wide river mouth fresh water enters the.
Coastal Bend Bays & Estuaries Program Protecting Our Bays and Estuaries Thank you for caring!

Coastal Bend Bays & Estuaries Program Protecting Our Bays and Estuaries Thank you for caring!
Freshwater inflow and salinity in San Antonio Bay By Karen A. Bishop.

Freshwater inflow and salinity in San Antonio Bay By Karen A. Bishop.
Massive Porites sp. corals as indicators of historical changes in river runoff: A case study for Antongil Bay (Masoala National Park, NE Madagascar ) J.

Massive Porites sp. corals as indicators of historical changes in river runoff: A case study for Antongil Bay (Masoala National Park, NE Madagascar ) J.
Hydrological Cycle.

Hydrological Cycle.
Draft Hydrology science questions for WATER HM Dennis P. Lettenmaier Department of Civil and Environmental Engineering University of Washington Water HM.

Draft Hydrology science questions for WATER HM Dennis P. Lettenmaier Department of Civil and Environmental Engineering University of Washington Water HM.
Water Quality Modeling in GIS Application of Schematic Network Processing Schema Links and Nodes have unique behaviors based on their type A framework.

Water Quality Modeling in GIS Application of Schematic Network Processing Schema Links and Nodes have unique behaviors based on their type A framework.
American Samoa Ephraim Temple UH Sea Grant American Samoa Community College.

American Samoa Ephraim Temple UH Sea Grant American Samoa Community College.
SB4. Students will assess the dependence of all organisms on one another and the flow of energy and matter within their ecosystems. c. Relate environmental.

SB4. Students will assess the dependence of all organisms on one another and the flow of energy and matter within their ecosystems. c. Relate environmental.
Marine Ecosystems Cover almost 75% of Earth’s surface and contains 97% of Earth’s water supply; and they provide most of the water for Earth’s rainfall.

Marine Ecosystems Cover almost 75% of Earth’s surface and contains 97% of Earth’s water supply; and they provide most of the water for Earth’s rainfall.
Biomes Biotic & Abiotic Factors Terrestrial Biomes Aquatic Biomes Biotic & Abiotic Factors Terrestrial Biomes Aquatic Biomes.

Biomes Biotic & Abiotic Factors Terrestrial Biomes Aquatic Biomes Biotic & Abiotic Factors Terrestrial Biomes Aquatic Biomes.
Aquatic Biodiversity Ocean 91% of all water Polar ice caps and glaciers 2.3% Lakes, streams, and rivers 2.8% Rest largely groundwater.

Aquatic Biodiversity Ocean 91% of all water Polar ice caps and glaciers 2.3% Lakes, streams, and rivers 2.8% Rest largely groundwater.
Aquatic Ecology (BIOL 435)

Aquatic Ecology (BIOL 435)
Aquatic Ecology: Biodiversity in Aquatic Systems G. Tyler Miller’s Living in the Environment 13 th Edition Chapter 7 G. Tyler Miller’s Living in the Environment.

Aquatic Ecology: Biodiversity in Aquatic Systems G. Tyler Miller’s Living in the Environment 13 th Edition Chapter 7 G. Tyler Miller’s Living in the Environment.
Science Warm-up 3/19/2012 ~52. There is a dead man lying in the desert next to a rock. What happened? 62. Two children born in the same hospital, in the.

Science Warm-up 3/19/2012 ~52. There is a dead man lying in the desert next to a rock. What happened? 62. Two children born in the same hospital, in the.
Texas Bay and Estuary Study Program Cindy Loeffler Flows for the Future October 31, 2005.

Texas Bay and Estuary Study Program Cindy Loeffler Flows for the Future October 31, 2005.
Why do we need to know about Rivers? Source of drinking water Source of irrigation water (You eat rivers as well as drink them) Waste removal (takes it.

Why do we need to know about Rivers? Source of drinking water Source of irrigation water (You eat rivers as well as drink them) Waste removal (takes it.

Similar presentations

Ads by Google